CN2113746U - Induction heated finger-print display gun - Google Patents
Induction heated finger-print display gun Download PDFInfo
- Publication number
- CN2113746U CN2113746U CN91215755U CN91215755U CN2113746U CN 2113746 U CN2113746 U CN 2113746U CN 91215755 U CN91215755 U CN 91215755U CN 91215755 U CN91215755 U CN 91215755U CN 2113746 U CN2113746 U CN 2113746U
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- China
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- induction
- finger
- utility
- vaporizer
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Abstract
The utility model discloses an induction heated finger-print displaying gun. The utility model adopts a power frequency induction transformer and an induction end head, and thoroughly utilizes the high-heat generated by the power frequency induction between the transformer output ends of the transformer rapidly volatilizing the displaying agent; through a miniature fan blowing onto a guest object, and after the guest object carrying out physical or chemical reaction with the sweat finger-print, the sweat finger-print can be displayed. The utility model needs no to be preheated while works, and the finger-print can be displayed rapidly. The utility model has the advantages of small size, convenient operation and light weight, and is convenient to be carried to the scene of crime for carrying out finger-print displaying.
Description
This utility model relates to fingerprint appearing technique in the Forensic Science, is a kind of high speed fingerprint manifestation equipment, is applicable to that the object except that textile carries out fingerprint manifestation.
Alpha-cyanoacrylate fingerprint manifestation method is a kind of effective ways that latent fingerprint is manifested that grow up the beginning of the eighties, use in recent years and experimental study all prove this kind method to sweat fingerprint at presentation capability, manifest scope, manifest the definition aspect and all be better than traditional bronze powder of using, magnetic powder and vacuum coating manifest the method for fingerprint.At present both at home and abroad when adopting alpha-cyanoacrylate to manifest fingerprint, mainly be in a hermetic container, to add a heating element, the object that needs is manifested fingerprint is suspended in the container, by its volatilization is reacted with perspiration after, on object, manifest fingerprint at dropping alpha-cyanoacrylate on the heating element, but this container volume is big, presentation time is long, is not easy to bring into the scene of a crime and uses.The someone has designed with the electrothermal wire heating and has evaporated alpha-cyanoacrylate and the hair dryer formula of evaporable alpha-cyanoacrylate gas blow-out is manifested rifle with fan both at home and abroad in recent years.Manifest rifle to give the hot time longer because of this, the alpha-cyanoacrylate content that forms in the gas is low, and is big to the temperature effect that manifests object, manifests weak effect and still can not practical application.
The purpose of this utility model is for criminal investigation provides a kind of volume little, easy to carry, can use, directly manifest at a high speed the fingerprint manifestation rifle (rifle shape visualizer) of sweat fingerprint in the scene of a crime.
This utility model is finished as follows, employing power is 60W, output voltage is 0.5V, electric current is that the line-frequency induction transformator of 120A is reduced to 0.5V with 220 alternating currents, 120A, at the output go-and-retum induction termination is set, utilizes the line-frequency induction of output go-and-retum to produce alpha-cyanoacrylate volatilization rapidly in 30 seconds in the bowl-shape thin-walled vaporizer that hyperpyrexia more than 600 ℃ will be fixed on the induction termination.Before vaporizer, made a tubaeform cover, manifested the space, improved the concentration of alpha-cyanoacrylate in order to airtight institute.Send out in the device at bowl-shape thin-walled and also can add iodine, the 8-hydroquinoline visualization reagent manifests the scope of object with expansion.At the posterior means mini-fan of rifle, the visualization reagent gas that afterwards evaporates being heated blows to and manifests on the object, to manifest the sweat fingerprint on the object rapidly.
Advantage of the present utility model is:
1, this utility model is provided with the induction termination between the outfan of Industrial Frequency Transformer, line-frequency induction can be produced high temperature and be delivered to the visualization reagent that makes on the bowl-shape thin-walled vaporizer in the vaporizer rapidly and be able to rapidly, fully volatilize the content height of visualization reagent in the air-flow.
2, adopt the blood pressure lowering voltage-transforming method that the 220V alternating current is depressurized to the voltage of 0.5V, 120A, can produce hyperpyrexia more than 600 ℃ rapidly, therefore, during this utility model work, need not carry out preheating in the line-frequency induction between two outfans.
3, device toroidal cover before vaporizer is regional airtight what will manifest during work, to improve the concentration of visualization reagent in the institute visualization area space.
4, this utility model compact conformation, volume is little, and is easy to carry, easy and simple to handle, manifests rapidly, and the sweat fingerprint that can be used for the object except that textile manifests, and cost is low, is beneficial to and applies.
Accompanying drawing is an embodiment sketch map of the present utility model, now in conjunction with the accompanying drawings this utility model is further described.
Manifesting muzzle adapter sleeve 3 of muzzle end socket, toroidal cover 2 of anterior socket at muzzle adapter sleeve 3, front end at toroidal cover 2 is provided with soft sealing ring 1, when on rough object, manifesting fingerprint, 1 pair of institute of soft seal manifests space and the external world and carries out airtightly, manifests efficient with raising.When big part object being manifested as need, object can be put into plastic bag, and plastic bag directly is enclosed within on the muzzle adapter sleeve 3, and tighten with bandage, unlatching manifests rifle, evaporable visualization reagent gas is blown and beaten manifesting on the object in the bag show fingerprint with sweat fingerprint generation physics or chemical reaction.The visualization reagent that the rear end of muzzle adapter sleeve 3 covers out on rifle body case 7 adds agent hole 4, is a bowl-shape thin-walled vaporizer 5 in the rifle body below adding agent hole 4.Bowl-shape thin-walled vaporizer 5 is fixedly connected with the induction termination 6 that two outfans of the line-frequency induction transformator 8 that is arranged on rifle body middle part are connected, when line-frequency induction transformator 8 is reduced to 0.5V with 220V unsteady flow electricity, during 120A voltage, the hyperpyrexia that produces between two outfans more than 600 ℃ is contained in the volatilization rapidly in 30 seconds of the visualization reagent in the bowl-shape thin-walled vaporizer 5.At the rear portion of rifle trigger 9 is housed, but air register 10, mini-fan 11.Trigger is by electric wire and mini-fan 11, and circuit connects.When trigger 9 is opened, line-frequency induction transformator 8, mini-fan 11 work, by regulating adjustable fan 10, the speed that the visualization reagent bromhidrosis that volatilizes with control blows out and what.Just can carry out sweat fingerprint to object after 30 seconds manifests.
Claims (2)
1, a kind of induction heating formula fingerprint manifestation rifle, comprise soft sealing ring (1), toroidal cover mouth (2), muzzle adapter sleeve (3), bowl-shape thin-walled vaporizer (5), induction termination (6), rifle shell (7), line-frequency induction transformator (8), plate machine switch (9), but air register (10) mini-fan (11), it is characterized in that: the fixedly connected bowl-shape thin-walled vaporizer in other end (5) in the induction termination (6) that is connected with line-frequency induction transformator (8) outfan, produce 600 ℃ of hyperpyrexia during work between line-frequency induction transformator (8) outfan, pass to bowl-shape thin-walled vaporizer (5) rapidly by induction termination (6) and make the visualization reagent fully volatilization rapidly in 30 seconds that is contained in the vaporizer (5).
According to the described fingerprint manifestation rifle of claim 1, it is characterized in that 2, the power of line-frequency induction transformator (8) is 60W, output voltage is 0.5V, and electric current is 120A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91215755U CN2113746U (en) | 1991-08-01 | 1991-08-01 | Induction heated finger-print display gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91215755U CN2113746U (en) | 1991-08-01 | 1991-08-01 | Induction heated finger-print display gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2113746U true CN2113746U (en) | 1992-08-26 |
Family
ID=4923784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91215755U Granted CN2113746U (en) | 1991-08-01 | 1991-08-01 | Induction heated finger-print display gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2113746U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106880360A (en) * | 2017-03-30 | 2017-06-23 | 李彦启 | A kind of portable field fingerprint quickly manifests instrument |
| KR102220585B1 (en) * | 2019-10-02 | 2021-02-25 | 대한민국 | Portable fumming device for detecting fingerprint with vacuum condition |
| CN112890811A (en) * | 2021-01-15 | 2021-06-04 | 辽宁警察学院 | Micron-sized electric heating type iodine spray gun |
-
1991
- 1991-08-01 CN CN91215755U patent/CN2113746U/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106880360A (en) * | 2017-03-30 | 2017-06-23 | 李彦启 | A kind of portable field fingerprint quickly manifests instrument |
| KR102220585B1 (en) * | 2019-10-02 | 2021-02-25 | 대한민국 | Portable fumming device for detecting fingerprint with vacuum condition |
| CN112890811A (en) * | 2021-01-15 | 2021-06-04 | 辽宁警察学院 | Micron-sized electric heating type iodine spray gun |
| CN112890811B (en) * | 2021-01-15 | 2023-12-22 | 辽宁警察学院 | Micron-sized electric heating iodine spray gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |