CN200944099Y - Device for detecting cigarette dilution rate and overall ventilation rate - Google Patents

Abstract

The utility model discloses a device for detecting the dilution rate and overall ventilation rate of cigarettes, which comprises a watch cap, an upper clamping seal ring, a ventilator, a lower clamping seal ring, a interface base, a clamping device, and a switching ferrule. The middle of the switching ferrule is arranged with a through-hole where the cigarette can enter. The watch cap, the upper clamping seal ring, the switching ferrule, the ventilator, the lower clamping seal and the interface base are placed one on top of another, and clamped by the clamping device. A hermetic seal is arranged between each stacked element above. The positions of the upper clamping seal ring and the switching ferrule can be interchanged. As the positions of the upper clamping seal ring and the switching ferrule can be interchanged conveniently, the utility model realizes a single machine with multiple use that detects not only the dilution rate of the cigarette, but also the overall ventilation rate of the cigarette.

Description

Be used to detect the device of cigarette dilution rate and total ventilation rate

Technical field

The utility model relates to a kind of pick-up unit of cigarette, particularly a kind of device that is used to detect cigarette dilution rate and total ventilation rate.

Background technology

Cigarette dilution rate and total ventilation rate are two physical indexs of cigarette being carried out quality testing, the implication of dilution rate is: when with standard flow Qo the cigarette filter end being aspirated, the air mass flow Qf that partly enters inner cigarette by filter tip accounts for the number percent of standard flow Qo; The implication of total ventilation rate is: when with standard flow Qo the cigarette filter end being aspirated, the air mass flow (Qp+Qf) that enters (comprising cigarette paper part and filter tip part) inner cigarette by the whole circumference face of cigarette accounts for the number percent of standard flow Qo.

Cigarette circumference-dilution rate analyzer (hereinafter to be referred as the VF tester) that Japan JTT company produces is that the spy who specially examines cigarette circumference, dilution rate advises instrument, as shown in Figure 1, its dilution rate unit is mainly composed in series successively by watch cap 1, last clamping O-ring seal 3, ventilated container 9, following clamping O-ring seal 6 and interface pedestal 8, wherein go up between clamping O-ring seal 3, ventilated container 9, following clamping O-ring seal 6 and the interface pedestal 8 and be respectively equipped with O RunddichtringO 4,5,7, above-mentioned parts are combined into integral body by fastening bolt 10 fit sealings.When cigarette by watch cap 1 access to plant in after, as shown in Figure 2, upper and lower clamping O- ring seal 3,6 is the two ends of clamping filter tips respectively, so just can detect the dilution rate of cigarette.But because the restriction of structure, this device can't be used for detecting total ventilation rate of cigarette, can not adapt to the requirement of new examination criteria.

The utility model content

The technical problems to be solved in the utility model provides a kind of dilution rate that can be used to detect cigarette, can be used to detect the device of total ventilation rate of cigarette again.

In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of device that is used to detect cigarette dilution rate and total ventilation rate, comprise watch cap, last clamping O-ring seal, ventilated container, following clamping O-ring seal, interface pedestal and clamp device, also has a conversion lasso, the center of conversion lasso is provided with and can holds the through hole that cigarette enters, described watch cap, last clamping O-ring seal, the conversion lasso, ventilated container, following clamping O-ring seal and interface pedestal stack successively, and clamp by clamp device, above-mentioned respectively stacking is hermetic seal between the parts, wherein said position of going up clamping O-ring seal and conversion lasso can exchange.

When the conversion lasso was between watch cap and last clamping O-ring seal, last clamping O-ring seal and following clamping O-ring seal can be clamped in the two ends of cigarette filter, are used to detect the dilution rate of cigarette; Unclamp clamp device, the position of last clamping O-ring seal and conversion lasso is exchanged, when making the clamping O-ring seal between watch cap and conversion lasso, last clamping O-ring seal and following clamping O-ring seal can be clamped in the two ends of whole cigarette, can be used to detect total ventilation rate of cigarette.In the utility model,, realized a tractor serves several purposes, both can detect the dilution rate of cigarette, can detect total ventilation rate of cigarette again because the position of last clamping O-ring seal and conversion lasso can exchange easily.

A kind of preferred version as technique scheme: described conversion lasso comprises overcoat, interior cover and photoelectric probe, and described interior cover is made and is embedded in the overcoat by transparent material, and described photoelectric probe is located in the overcoat and places the both sides of interior cover.When photoelectric probe detect cigarette enter in behind the cover, can send control signal, make up and down that the clamping O-ring seal tightens up, and form sealing between the cigarette, thereby the start detection process can realize the automatic control of testing process like this.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the STRUCTURE DECOMPOSITION synoptic diagram of existing a kind of VF tester dilution rate unit.

Fig. 2 is the schematic diagram that existing a kind of VF tester dilution rate unit detects the cigarette dilution rate.

Fig. 3 is the view of pick-up unit of the present utility model when detecting the cigarette dilution rate.

Fig. 4 is a kind of structural representation of changing lasso in the utility model.

Fig. 5 is the view of pick-up unit of the present utility model when detecting the total ventilation rate of cigarette.

Embodiment

As shown in Figure 3, in the utility model pick-up unit, watch cap 1, conversion lasso 2, last clamping O-ring seal 3, ventilated container 9, following clamping O-ring seal 6, interface pedestal 8 stack from top to bottom successively, fastening bolt 10 are set with integral body of above-mentioned each parts pinched composition between watch cap 1 and interface pedestal 8.Respectively stack between the surface of contact of parts O-ring seal is set, clamp the back and form hermetic seal.The center of conversion lasso 2 is provided with through hole, can hold cigarette and free in and out.

Under this assembled state, can be used to detect the dilution rate of cigarette, at first start the VF tester, on, following clamping O-ring seal 3, it is big that 6 emulsion tube endoporus becomes, cigarette 11 to be measured is entered from watch cap 1, filter tip is downward, can accurately locate in order to guarantee cigarette 11, be provided with smoke barrier 12 in interface pedestal 8, filter tip is with after smoke barrier 12 contacts when cigarette falls, and cigarette promptly is positioned, on this moment, following clamping O- ring seal 3,6 just in time are positioned at the two ends up and down of filter tip, to go up then, following clamping O- ring seal 3,6 emulsion tube endoporus shrinks, and forms sealing between the filter tip, can carry out the dilution rate test.

In order to realize automatic control, the structure of conversion lasso 2 can be as shown in Figure 4, it comprises overcoat 23, interior cover 21 and photoelectric probe 22, cover 21 is made and is embedded in the overcoat 23 by the transparent organic glass pipe wherein, photoelectric probe 22 be embedded in the overcoat 23 and place in the both sides of cover 21, after cigarette enters, light signal conductively-closed between two photoelectric probe 22, photoelectric probe can be exported control signal, and the emulsion tube endoporus of upper and lower clamping O- ring seal 3,6 is shunk automatically, and filter tip is formed sealing.

When detecting cigarette dilution rate Vf, be to attract the cigarette filter end, measure the air influx Qf that enters filter tip portion by ventilated container 9, calculate and to get by following formula then with standard flow (17.5cc/sec).

$\mathrm{Vf}=\frac{\mathrm{Qf}}{\mathrm{Qo}}\×100(\%)$

Standard flow Qo (17.5cc/sec)=Qt+Qp+Qf

Qt represents cigarette top leaked-in air influx;

Qp represents cigarette paper part leaked-in air influx;

Qf represents filter tip part leaked-in air influx.

If detect total ventilation rate of cigarette, only need to go up the location swap of clamping O-ring seal 3 and conversion lasso 2, as shown in Figure 5, after cigarette to be measured enters, the two ends of 3,6 pairs of whole cigarette of upper and lower clamping O-ring seal clamp sealing, because between the endoporus of conversion lasso 2 and the cigarette certain clearance is arranged, the air that enters from ventilated container 9 can enter inner cigarette from the whole outer circumference surface of cigarette, so just can detect total ventilation rate of cigarette.

When detecting total ventilation rate (Vf+Vp) of cigarette, also be to attract the cigarette filter end with standard flow (17.5cc/sec), metering enters filter tip part and cigarette paper air influx sum Qf+Qp partly by ventilated container 9, is calculated and can be got by following formula then.

$(\mathrm{Vf}+\mathrm{Vp})=\frac{\mathrm{Qf}+\mathrm{Qp}}{\mathrm{Qo}}\×100(\%)$

Standard flow Qo (17.5cc/sec)=Qt+Qp+Qf

Qt represents cigarette top leaked-in air influx;

Qp represents cigarette paper part leaked-in air influx;

Qf represents filter tip part leaked-in air influx.

Pick-up unit of the present utility model is used for the VF tester, not only do not destroy the measurement structure of instrument itself, do not change the metering system of instrument itself yet, promoted the use value of VF tester on the contrary, enlarge the usable range of VF tester, had good result of use.

Claims (2)

1. device that is used to detect cigarette dilution rate and total ventilation rate, comprise watch cap (1), last clamping O-ring seal (3), ventilated container (9), following clamping O-ring seal (6), interface pedestal (8) and clamp device, it is characterized in that: also comprise a conversion lasso (2), the center of conversion lasso (2) is provided with and can holds the through hole that cigarette enters, described watch cap (1), last clamping O-ring seal (3), conversion lasso (2), ventilated container (9), following clamping O-ring seal (6) and interface pedestal (8) stack successively, and clamp by clamp device, above-mentioned respectively stacking is hermetic seal between the parts, wherein said position of going up clamping O-ring seal (3) and conversion lasso (2) can exchange.

2. the device that is used to detect cigarette dilution rate and total ventilation rate according to claim 1, it is characterized in that: described conversion lasso (2) comprises overcoat (23), interior cover (21) and photoelectric probe (22), cover (21) is made and is embedded in by transparent material in the overcoat (23) in described, and described photoelectric probe (22) is located in the overcoat (23) and places the both sides of interior cover (21).

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