CN2176543Y - Single sampler - Google Patents

Abstract

The utility model relates to a minitype single body dust sampler. The minitype single body dust sampler is mainly used for single body dust monitoring and sampling, and the minitype single body dust sampler can also be used for the fixed point sampling of the dust solubility of a workshop. The minitype single body dust sampler can select sampling flow quantity between 0-2.51/min according to different conditions, and more than 97% sampled samples are dust which is less than 10 microns. A sampling head can be changed according to different conditions to carry out the sampling work of atmospheric air floating dust and toxic substance in air. The minitype single body dust sampler is also provided with a synchronous timing display. The integral machine has the advantages of compact structure, small body, light weight, etc.

Description

Single sampler

The utility model belongs to the environmental monitoring field, is a kind of common instrument in the sampling work.

Personal sampler is at factory, mine, environmental protection, hygiene department a kind of instrument commonly used, in the prior art, generally adopts and adorns two pumps and establish two paths in sampling thief, perhaps adorns a pump and establishes a path and realize; Before a kind of mode can cause the sampling thief volume, the disadvantage that weight, power consumption all increase, then a kind of mode then can make pump inner structure complexity.In addition, in the prior art, the flow of sampling thief generally all is fixed on the speed, uses also inconvenience that have more.

The purpose of this utility model is that a kind of improved personal sampler will be provided, and it can not only select sampling flow according to different situations, thereby measures the solubility and the demonstration of clocking of objectionable impurities in certain zone exactly.

The utility model is achieved in that exhaust nozzle and admission piece is installed on the micropump that sampling head links to each other with admission piece, and the micro flow operation valve is installed below admission piece, by the size of control air entry, selects air mass flow within the specific limits.Micropump is by a micro motor for driving, the centre is connected with eccentric wheel by the micropump connecting rod, when air-breathing, air through sampling head with dust-filtering after, enter the pump housing, pass through air entry then, push a shifting board of inwardly opening open, running by pump outwards extrudes again, when air during to external pressure, in open baffle plate and close automatically, air presses off the external-open shifting board then and discharges through exhaust nozzle, so just finish a working cycle, in addition, a time synchronisation display is housed also in the sampling thief, when sampling thief is loaded onto power supply, after opening gauge tap, sampling thief is started working, and the time synchronisation display also picks up counting.

The utility model has vacuum noz(zle) compared to existing technology and exhaust nozzle concentrates on the pump housing, has dwindled the volume of sampling thief, is easy to carry; Because the micro flow operation valve has been installed, can be chosen in the interior different flow continuous sampling of scope of 0～2.5l/min simultaneously.Because the time synchronisation display has been installed, can grasp the working time of sampling thief exactly, be convenient to airborne dust concentration of unit of account time.

Fig. 1 is the utility model inner structure synoptic diagram;

Fig. 2 is the utility model monnolithic case synoptic diagram.

Below in conjunction with accompanying drawing the concrete structure that the utility model proposes is further described:

This structure comprises admission piece 2, exhaust nozzle 1, micro flow operation valve 3, micropump 9, eccentric wheel 7, micromotor 8, time synchronisation display 15, gauge tap 16, sampling head 12, connecting pipe 11 and power pack 14.

Work as energized, open gauge tap 16 after, sampling thief is started working, synchrotimer 15 picks up counting, and drives eccentric wheel 7 rotations by micromotor 8, and micropump connecting rod 6 is moved up and down, thereby drive micropump 9 runnings, when connecting rod was downward, air was after sampling head 12 filters, enter admission piece 2, open shifting board 5 again and enter the pump housing in air entry 4 is pushed open, when connecting rod moved upward, air outwards discharged, to close to opening shifting board 5, and press off the external-open shifting board then and discharge from exhaust nozzle 1.

Micromotor 8 of the present utility model is installed in the power pack 14, the power supply of micromotor 8 and time synchronisation display 15 all adopts 220 volts, 50 hertz of single phase alternating current power supplies, open gauge tap 16 after the energized after, alternating current directly drives 15 work of micromotor 8 and timing display.Gauge tap 16 adopts the mechanical type push-pull switch.

Claims (2)

1, a kind of personal sampler, it comprises micromotor, micropump, sampling head and power supply, it is characterized in that: have the operation valve 3 that miniature 9 of two-way air inlet and exhaust piper is provided with air mass flow that can be when the scope of 0～25l/min is selected sampling, operation valve 3 is provided with air entry 4 and Nei Kai, external-open shifting board 5,10, be provided with micropump connecting rod 6 and eccentric wheel 7 between micromotor 8 and the micropump 9, for working time of accurate recording sampling thief is provided with clock synchronously device 15 and gauge tap 16 when showing on casing 13, the bottom of casing 13 is provided with power pack 14.

2, sampling thief according to claim 1 is characterized in that by changing miniature sampling head 12, can be used as charcoal pipe sampling, also can be used as the air participates sampling and as the power power source of atmospheric sampling.

Images