CN101950466B

CN101950466B - Flood alarm

Info

Publication number: CN101950466B
Application number: CN2010102941302A
Authority: CN
Inventors: 周强; 周容
Original assignee: HARBIN HUALIANG TECHNOLOGY Co Ltd
Current assignee: HARBIN HUALIANG TECHNOLOGY Co Ltd
Priority date: 2010-09-28
Filing date: 2010-09-28
Publication date: 2013-04-10
Anticipated expiration: 2030-09-28
Also published as: CN101950466A

Abstract

The invention discloses a flood alarm, comprising a shell (1). The bottom of the shell (1) is provided with a water inlet (2), the upper part of the shell (1) is provided with a vent hole (5), the vent hole (5) can prevent insects and sundries from entering the inside of the shell (1), the inside of the shell (1) is provided with a floater (3), the bottom surface of the floater (3) completely covers the water inlet (2), and a permanent magnet (4) is embedded at the top of the floater (3); after the floater (3) floats upwards when confronting water, a reed switch (6) controlled by the magnetic field of a magnet (4) initiates an alarm circuit; the alarm circuit comprises a 1.5 volt battery (9), a luminotron (14) and an acoustical generator (12); and the acoustical generator (12) is arranged in a resonance chamber (13) which amplifies sound, and the reed switch (6) is provided with a pair of reserved contacts.

Description

Flood alarm

Affiliated technical field

The present invention relates to a kind of flood alarm, especially be applicable to resident from far-off regions and use, lay easily flood alarm.

Background technology

In recent years, along with human production activity's reinforcement, physical environment is constantly destroyed, and various disaster showed increased, especially floods are more serious to people's harm of living in rural area or remote mountain areas.For these areas provide a kind of flood alarm of practicality very necessary.

Chinese patent instructions 02229792.8 discloses a kind of flood alarm.This alarm mainly is comprised of the metal ball float in net bucket and the net bucket, and when flood arrived, ball float come-up touch switch was reported to the police.The problem that this alarm exists is that its ball float exposes in the net bucket, and the foreign material such as insect and leaf are easy to enter in the net bucket, pollute and hinder the come-up of ball float, and it is malfunctioning to cause reporting to the police.

Chinese patent instructions 200720107074.0 discloses another kind of flood alarm.This alarm is comprised of the ball float in the housing that has the inlet opening and the housing, and connecting rod is arranged on the ball float, and flood comes interim connecting rod upwards to float with ball float along orienting lug, and touch switch is reported to the police.This alarm improves to some extent than aforesaid alarm, ball float is in the housing of relative closure, reliability increases, but owing to have a plurality of water inlets on its housing, at various insect amount reproductions in flood season, insect is easy to climb to from water inlet does nest in the housing, the foreign material such as dust and hay also can enter in the housing by water inlet in addition, cause ball float can not reliably float, make between connecting rod and the orienting lug and block, it is malfunctioning to cause reporting to the police, the switch contact of this alarm is also polluted and oxidation easily in addition, causes reliability to reduce.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of flood alarm that is not vulnerable to the reliable operation of insect and foreign material impact.

For solving the problems of the technologies described above, the technical solution adopted in the present invention is: the bottom at the flood alarm housing has water inlet, be provided with float in the housing, the bottom surface of float covers described water inlet fully, when not having water, described float seals water inlet by the weight of self, prevent that insect and other foreign material from entering in the housing, when flood arrives, the weight of float self can not seal water inlet, and float floats with the rising of water level, floats reliably rapidly for making float, have on the top of float place cavity and can prevent that insect and foreign material from entering the vent port of housing, discharge the air that hinders the float come-up.

As a further improvement on the present invention, the top of described float is provided with permanent magnet, top at float place cavity is provided with tongue tube, when float floats near described tongue tube, the magnetic field of described permanent magnet makes the contact action launching warning circuit of tongue tube, because the contact of tongue tube is enclosed in the glass tube, can not pollute and the situation of oxidation, the action of its contact is to rely on magnetic field rather than mechanical force, so its functional reliability is higher than the mechanical switch that is promoted by connecting rod.

As another kind of improvement the of the present invention, be provided with acoustical generator and luminotron in the described warning circuit, described acoustical generator is in parallel with described luminotron, send simultaneously sound and light alarm during warning, alarming effect is better, described acoustical generator places resonator, utilizes the principle of resonance voice emplifying, so that only also can send very large chimes of doom with a joint in 1.5 volts of battery powered situations at alarm.

As more step improvement of the present invention, described tongue tube is provided with a pair of spare contact, and this contact can start external radio transition equipment, the flood alerting signal is issued the related personnel in a distant place.

The invention has the beneficial effects as follows, the body cavity at float place is the environment of a relative closure, insect and other foreign material are not easy to enter in the housing, the magnetic field control tongue tube that utilizes the magnet on the float to produce is reported to the police, avoided the problem of the exposed easy contaminated oxidation in mechanical switch contact, an independent float upwards floats, than band connecting rod on the ball float along the orienting lug more flexibility and reliability of upwards floating, acoustical generator is positioned at resonator, only with sending enough large chimes of doom once the powered battery of 1.5 volts at joint, whole alarm volume is small and exquisite, lay flexible, can also utilize the spare contact of tongue tube to start external radio transition equipment, the flood alerting signal be sent to the related personnel in a distant place.

Description of drawings

The present invention is further described below in conjunction with drawings and embodiments.

Accompanying drawing is structural representation of the present invention.

1. housings among the figure, 2. water inlet, 3. float, 4. permanent magnet, 5. vent port, 6. tongue tube, 7. anode contact point, 8. battery case, 9.1.5 lies prostrate battery, 10. the battery case bonnet organ for resonance of holding concurrently, 11. spring, 12. acoustical generators, 13. resonators, 14. luminotrons, 15. spare contacts.

Embodiment

From embodiment of the present invention shown in the drawings as can be known, the diameter of the water inlet 2 of housing bottom is less than the external diameter of float 3, the bottom surface of float tightly contacts with the surface of water inlet, prevent that insect and other foreign material from entering enclosure interior, it is little that a volume is inlayed at the top of float, powerful magnet 4, the top of float place cavity arranges a double-contact tongue tube 6, if the tongue tube of double-contact can't buy, can replace with two single-contact tongue tubes, wherein an end of pair of contact and anode contact point 7 join, the other end joins by the positive pole of conductor and luminotron 14 and acoustical generator 12, remaining pair of contact links to each other with spare contact 15, the position of vent port 5 is near the top of float place cavity, the battery case bonnet is held concurrently and the spring 11 that contacts with battery cathode is housed on the organ for resonance 10, and the negative pole of this spring and luminotron 14 and acoustical generator 12 joins.

When flood arrives, float floats with water level, magnet on the float is during near tongue tube, the closing of contact of tongue tube starts warning circuit, send sound and light alarm, if utilized simultaneously spare contact, then external radio transmitting apparatus will send to alerting signal the related personnel in a distant place.

Claims

1. flood alarm, comprise housing (1), the bottom of this housing (1) has at least one water inlet (2), a float (3) is equipped with in the inside of this housing (1), the top of this float (3) studs with a permanent magnet (4), the top of this float (3) place cavity has at least one vent port (5), the top of this cavity is provided with tongue tube (6), the pair of contact of this tongue tube (6) is connected in the warning circuit as the starting switch of alarm, this warning circuit comprises joint 1.5 volts of batteries (9), luminotron (14) and acoustical generator (12), it is characterized in that: the bottom surface of described float (3) covers described water inlet (2) fully, described vent port (5) can prevent that insect and foreign material from entering housing (1), described acoustical generator (12) has been arranged in the resonator (13) of voice emplifying effect, and described tongue tube (6) has a pair of spare contact.

2. flood alarm according to claim 1 is characterized in that: luminotron (14) and acoustical generator (12) access in parallel warning circuit.

3. flood alarm according to claim 1, it is characterized in that: a pair of spare contact of described tongue tube (6) can start external radio transmitting apparatus, the flood signal is sent to the related personnel in a distant place.