RU2005374C1 - Device for scaring away birds and animals - Google Patents

Abstract

FIELD: agriculture. SUBSTANCE: device has power source 1, control unit 2, and actuator 3 having pneumatic transducers 4. The actuator is connected to air source 6 via an air line with pressure reduction valve 5. Each transducer has an external step of body 7 with exhaust openings 8 and air feed union 9, sleeve 10, channels 14, 15, 16, electric pneumatic valve 17, control chamber 19, and working chamber 20. Internal step 11 with holes 12 is mounted co-axially with external step 7. The holes are in register with openings 8 covered with cylinder 13. EFFECT: higher reliability. 2 dwg

Description

 The invention relates to means for repelling birds and animals from protected objects and can be used in various sectors of the economy, in particular in agriculture.

 A device for repelling birds is known, comprising a rectifier, a capacitor, a limiting resistor and a spark gap with a resonator, the spark gap consisting of a fixed and a moving electrode, at the moment of contact of which a discharge of a capacitor charged from the AC mains through the rectifier and the limiting resistor occurs.

 The disadvantage of this device is the low efficiency associated with the small amplitude of the emitted signal and the inability to control the signal in amplitude and frequency.

 Also known is an acoustic device for scaring birds, containing tone and control generators, the outputs of which are connected to the corresponding inputs of the matching circuit, an attenuator and amplifier, the output of which is connected to the acoustic transducer, as well as a tone generator, control unit and adder.

 Despite the fact that this acoustic device is capable of regulating the signal at a frequency, its disadvantage is the low efficiency associated with the small amplitude of the emitted signal and, therefore, a sharply limited radius of action.

 Closest to the proposed device is a bird repellent, including a power source, gas and explosive chambers, interconnected by means of a flexible tube, a charger, an ignition mechanism, the gas chamber being equipped with a diaphragm, and the flexible tube has a clamping device and the charger is made in the form of a spring-loaded rod mounted on the diaphragm kinematically connected to a shaft on which there is an eccentric with a stop and a cam installed with the possibility of interaction respectively Especially with a clamping device and an ignition mechanism.

 The disadvantage of this device is cumbersome, increased explosiveness and low efficiency associated with the inability to control the signal in amplitude and frequency.

 The aim of the invention is to increase the efficiency of the device by increasing the amplitude of the emitted signal and frequency control.

 This goal is achieved in that the device for scaring away birds and animals, containing a power source, a source of compressed air, a control unit and an actuator connected to the control unit electrically and with a source of compressed gas through a gearbox, while the actuator includes a housing with exhaust windows, placed in the lower part of the glasses and the supply pipe, according to the invention contains in the upper part of the housing of the actuator a cylindrical plug in which the electric non-valve, and between the cylindrical plug and the housing with the possibility of moving relative to them, a cylinder is placed with the formation of an annular control chamber between the upper part of the housing, the cylinder and the cylindrical plug, while the inner part of the glass is communicated by filling channels with the annular control chamber and exhaust openings with exhaust windows, in addition, the annular control chamber is communicated by control channels with the space between the exhaust windows and exhaust openings, while The valve is arranged to overlap the control channel, wherein in one of the extreme positions of the cylinder is disposed to overlap the windows of exhaust from the exhaust openings, and control channels.

 The increase in efficiency by increasing the amplitude of the emitted signal is achieved by increasing the pressure of compressed air emitted by the actuator when triggered, by increasing the number of actuators simultaneously participating in the work, as well as by increasing the density of grouping of actuators per unit area.

 Regulation of the frequency of the emitted signal (at the maximum of the frequency spectrum from 10 to 300 Hz) is achieved both by changing the pressure of the compressed actuator - opening time is reduced), and by changing the volume of the working chamber of the actuator due to interchangeable glasses (increasing the volume of the working chamber increases the opening time of the working chamber movable cylinder).

 In FIG. 1 shows a structural diagram of the proposed device for repelling birds and animals; in FIG. 2 - actuator.

 The device for repelling birds and animals consists of a power source 1, which ensures the functioning of the control unit 2 and, accordingly, the actuator 3. The actuator 3 is connected through a line with a pressure reducing valve 4 to a source of compressed gas 5. The actuator consists of a housing 6 with exhaust windows 7, the supply pipe 8 for supplying compressed air from the source 5 and the supply pipe 9 for supplying electrical pulses from the control unit 2. The housing 6 is connected by clamps to a replaceable cup 10. Coaxial casing 6 has a cylindrical plug 11 with exhaust openings 12 aligned with exhaust windows 7 covered by a movable cylinder 13. The cylindrical plug 11 includes control channels 14, subversive radial channels 15, filling channels 16 and an electro-pneumatic valve 17 with a stepped locking element 18. Housing 6, a cylindrical plug 11 and a movable cylinder 13 form an annular control chamber 19, and a replaceable cup 10, a cylindrical plug 11 and a movable cylinder 13 form a working chamber 20.

 A device for repelling birds and animals works as follows.

 The working air from the source of compressed gas 5 through the pressure reducing valve 4, the supply pipe 8 enters the chamber 19 of the actuator 3, moving the movable cylinder 13 to the stop with the protrusions of the cylindrical plug 11. From the chamber 19, the compressed air enters the working chamber 20 through the filling channels 16. After filling the working chamber 20 to a predetermined pressure, the actuator 3 is ready for operation.

 When electric pulses arrive from the storage capacitors of the control unit 2 to the actuator 3, the electro-pneumatic valve 17 is activated. When the electro-pneumatic valve 17 is activated, the core moves inside the coil, retracting the stepped locking element 18, and compressed air from the control chamber 19 through the subversive channels 15 and control channels 14 enters blasting pad "A" of the movable cylinder 13. The pressure in the chamber 19 drops, and from the blasting pad "A" increases and the movable cylinder 13 abruptly moves inside ry of the control chamber 19, opening the working chamber 20.

 When opening the exhaust windows 7 and exhaust holes 12 there is a sharp release of compressed air into the environment, generating an acoustic signal. After the ejection of part of the compressed air (50%) from the working chamber 20, the force acting on the blasting end "A" of the movable cylinder 13 decreases, and the force acting on the side of the control chamber 19 increases due to air compression. The movable cylinder 13 is braked by compressing the air in the chamber 19, and under the action of the air spring returns to its original position. After filling the working chamber 20 with air to a predetermined pressure and receiving a signal from the control unit 2, the cycle is repeated.

 The minimum time interval between device operations is determined by the time required to fill the working chambers with compressed air and charging the capacitors of the control unit.

 Depending on the operating conditions, the device for repelling birds and animals may include a group of actuators, which is an extensive area system, for example, when repelling birds in gardens, a linear system of a given length, for example, when repelling birds at aerodromes, or a dense group of 2-3 m steps, for example, when scaring away rodents in warehouses, storages, etc.

 Increasing the amplitude of the emitted signal allows you to effectively use the proposed device in open areas (fields, gardens), the regulation of the frequency spectrum allows you to tune the system to the frequency that most effectively affects the specific type of object being scared. The product was tested at the Livadia state farm in Crimea to scare birds in the vineyards and showed high efficiency. (56) German Patent No. 2604862, Class A 01 M 29/04, 1980.

Claims (1)

 DEVICE FOR BEATING BIRDS AND ANIMALS, containing a power source, a source of compressed gas, a control unit and an actuator connected to the control unit electrically and with a source of compressed gas through a reducer, while the actuator includes a housing with exhaust windows located in the lower part of the glass and a supply pipe, characterized in that, in order to increase efficiency, a cylindrical plug is installed in the upper part of the actuator housing, in which the electric air a valve, moreover, between the cylindrical plug and the housing with the possibility of movement relative to them, a cylinder is placed with the formation of an annular control chamber between the upper part of the housing, the cylinder and the cylindrical plug, while the inner part of the glass is communicated with filling channels with the annular control chamber and exhaust openings with exhaust windows, in addition, the annular control chamber is communicated by control channels with the space between the exhaust windows and exhaust openings, while n installed with the possibility of overlapping control channels, and, in one of the extreme positions of the cylinder is located with the possibility of overlapping exhaust windows from the exhaust holes and control channels.