CN2128383Y

CN2128383Y - Dust collector for portable dust measurer

Info

Publication number: CN2128383Y
Application number: CN 92226454
Authority: CN
Inventors: 陈仲泉; 许敬之; 邢建基; 林玲; 庐明尧; 刘文秀
Original assignee: Beijing Geological Instrument Factory Of Ministry Of Geology And Mineral Resources
Current assignee: Beijing Geological Instrument Factory Of Ministry Of Geology And Mineral Resources
Priority date: 1992-07-04
Filing date: 1992-07-04
Publication date: 1993-03-17
Anticipated expiration: 2002-07-04

Abstract

The utility model relates to a dust collector for a portable dust measurer, which is a hand rotary filter paper dust collector, comprising a hand wheel 8, a cartridge wheel 9, a big tooth ring 10, an upper paper clamp ring 11, a lower paper clamp ring 13, dust collecting filter paper 12, a brake guide wheel 14, a guider 15, a supporting guide wheel 16 and a tabletting 18. When the hand wheel turns once, the paper clamp ring can turn an angle and can measure once according to a sequence number, each filter paper can measure 6-20 samples, the upper surface of the upper paper clamp ring is carved with measuring order numbers which can be observed in the view window of an instrument panel. The utility model omits an electric driving part, so the volume, the weight and the power consumption can all satisfy the requirements of the portable instrument.

Description

Dust collector for portable dust measurer

The utility model belongs to the dust measurement instrument.

The instrument of air dust content in the measurement environment of use β radiation absorption principle design, the overwhelming majority is fixed, semi-fixed type, in the station formula, miniature instrument, full-automatic beta-ray dust measuring instrument as the U.S. big enlightening company, the MPSI-100 type beta-ray dust measuring instrument of Holland and France, the 186 type beta-ray dust measuring instruments of Japan's this electronics industry of Qi, the BAM-102 type beta-ray dust measuring instrument of Japan bavin field instruments for scientific research Industrial Co., Ltd, the XJC-1 type floating dust monitor and the XWC-1 type microcomputer atmosphere dust content of 3621 type beta-ray dust measuring instruments of West Germany and inventor's development are measured instrument etc., their measurement sensitivity is all than higher, and can continuous coverage, but all be Alternating Current Power Supply, weight is greater than 25 kilograms, have up to more than 70 kilograms, they can only location survey, for mobile monitoring or do not possess the place of Alternating Current Power Supply, prior art can't satisfy.

The sampling of above-mentioned prior art is all carried out continuously, and they all want a sets of transmission mechanism, and its volume and weight is all bigger, and needs certain power.Their sampling area is all bigger, and this is useful for improving precision, but also will increase the volume and weight of device, and its required airshed is big, and volume, weight and the power consumption of corresponding air pump are all bigger, also should not be used for Portable Measurement Instrument.

The purpose of this utility model is:

A kind of dust collect plant portable, the direct current supply dust gauge that is used for is provided, under the condition that can satisfy the measuring technique requirement, changes electronic borderland measurement in the prior art into finite point and measure, remove gearing of the prior art; Dwindle sampling area, reduce the air pump pumping rate, to satisfy the requirement of portable instrument miniaturization and power saving.

The utility model is made up of dust inlet 1, particle separator 2, β source 3, particle collector 4, detector 5, gas outlet 6, air pump 7, support mesh grid 17, detecting device cover for seat 19 and base 20, it is characterized in that: particle collector 4 is a kind of manual turntable formula filter paper particle collectors, by handwheel 8, splendidly take turns 9, big gear ring 10, upper clamping paper ring 11, lower clamping paper ring 13, dust collecting filter paper 12, braking guide wheel 14, guides 15, supporting guide wheel 16, compressing tablet 18 formed.

Handwheel 8 with splendid take turns 9 with axle, splendid take turns 9 with big gear ring 10 engagement, big gear ring 10 is fixed into one with

braking guide wheel

14,13 of upper clamping paper ring 11 and lower clamping paper rings clamp dust collecting filter paper 12 and the location presses on the big gear ring 10, make one-directional rotation by guides 15 control brake angle sheaves 14, when handwheel 8 rotates once, big gear ring 10 drives the upper clamping paper ring 11 and the lower clamping paper ring 13 that accompany dust collecting filter paper 12 and rotates an angle, number measure once in order, the upper surface of upper clamping paper ring 11 is carved with the measurement sequence number, can observe on the form of instrument panel.Totally three of supporting guide wheels 16, an elasticity activity is inwards arranged, when with it during to lira, braking guide wheel 14, lower clamping paper ring 13, dust collecting filter paper 12 and upper clamping paper ring 11 are installed on the base 20 successively, unclamp movable supporting guide wheel 16, big gear ring 10 promptly is fixed on the base 20, when with lower clamping paper ring 13, dust collecting filter paper 12 and upper clamping paper ring 11 by after installing, it is loosening to prevent it to push down upper pressure paper ring 11 with compressing tablet 18.

The utility model is designed to big gear ring 10 rotations one and encloses 6-20 the sample of can sampling.The outlet of particle separator 2 is concentric with gas outlet 6, is positioned at the eccentric position of big gear ring 10, makes each measuring samples that its corresponding position be arranged on dust collecting filter paper 12 and not overlapping, i.e. the control of dust position.Gas is by the air pump suction, and the grit that will intend measuring through particle separator 2 drops on the dust collecting filter paper 12.The β actinism is sent to the grit of dust collecting filter paper 12 in β source 3 under the particle separator 2, and arrival detector (Gai Shi pipe) 5 also is received, and carries out signal Processing and shows measurement result by measuring system.

Compared with the prior art the utility model has following advantage:

1. save the gearing that is used for continuous coverage, the volume and weight of particle collector descends greatly, satisfies the requirement of portable instrument;

2. save the gearing that is used for continuous coverage,, saved the transmission electricity consumption, the complete machine electricity consumption is reduced greatly with manually changing measuring point;

3. when measuring, every dust collecting filter paper is all surveyed a background (blank filter paper) earlier, thereby eliminates the irregular influence that brings because of filter paper, and therefore there is not the accumulation of error in the instrument of forming with the utility model when measuring.

Description of drawings:

Figure one is the structural drawing of the utility model dust collect plant

1. dust inlet 2. particle separators

3. β source 4. particle collectors

5. detector 6. gas outlets

7. air pump 8. handwheels

9. splendid 10. big gear rings of taking turns

11. upper clamping paper ring 12. dust collecting filter papers

13. lower clamping paper ring 14. braking guide wheels

20. base

Fig. 2 the utility model particle collector break figure

10. big gear ring 11. upper clamping paper rings

12. dust collecting filter paper 13. lower clamping paper rings

14. braking guide wheel

The vertical view of Fig. 3 the utility model particle collector

10. big gear ring 11. upper clamping paper rings

13. lower clamping paper ring 14. braking guide wheels

15. guides 16. supporting guide wheels

17. support mesh grid 18. compressing tablets

19. detecting device cover for seat

Embodiment:

The utility model is used for the portable explosion-proof dust gauge of AZFC-1 type, and every filter paper rotates a circle by big gear ring and can measure 12 samples, measures sequence number and is read by the instrument panel form.Tested dusty gas by air pump 7 from dust inlet 1 suction instrument, isolating dust that need to measure particle size range through particle separator 2 enters particle collector 4 and is collected on the dust collecting filter paper 12, by sending the β ray by being loaded on particle separator 2 following β sources, affact the dust that is collected on the dust collecting filter paper 12, by detector 5 detection signals, measure and record by circuit part.

Use portable its monitoring range of explosion-proof dust gauge of AZFC-1 of the present utility model to be:

Total dirt measurement range 0.1-500mg/m ²

Respirable dust or respirable dust scope 0.1-200/m ²

Static accuracy ± 2.5%;

3 kilograms of instrument general assembly (TW)s;

Sampling mottle area 0.5cm ²

Claims

1, a kind of dust collect plant of portable dust gauge, form by dust inlet (1), particle separator (2), β source (3), particle collector (4), detector (5), gas outlet (6), air pump (7), support mesh grid (17), detecting device cover for seat (19) and base (20), it is characterized in that:

(1). particle collector is a kind of manual turntable formula filter paper particle collector, is made up of handwheel (8), the splendid wheel (9), big gear ring (10), upper clamping paper ring (11), lower clamping paper ring (13), dust collecting filter paper (12), braking guide wheel (14), guides (15), supporting guide wheel (16), compressing tablet (18);

(2). handwheel (8) is coaxial with splendid wheel the (9), splendid wheel (9) and big gear ring (10) engagement, big gear ring (10) is fixed together with braking guide wheel (14), folder presses on the big gear ring (10) with dust collecting filter paper (12) and location between upper clamping paper ring (11) and lower clamping paper ring (13), by guides (15) control brake wheel (14) one-directional rotation, handwheel (8) rotates once, big gear ring (10) drives upper clamping paper ring (11), lower clamping paper ring (13) and dust collecting filter paper (12) rotating certain angle, and measuring sequence is carried out once;

(3). the outlet of particle separator (2) is concentric with gas outlet (6), is positioned at the eccentric position of big gear ring (10), makes each measuring samples that its corresponding position be arranged on dust collecting filter paper (12) and not overlapping.

2, according to the dust collect plant of the said portable dust gauge of claim 1, it is characterized in that: the upper surface of upper clamping paper ring (11) is carved with the measurement sequence number, reads from the form of instrument panel.

3, according to the dust collect plant of the said portable dust gauge of claim 1, it is characterized in that: a dust collecting filter paper of every installation (12), can measure 6-20 sample.