Device for signaling a critical liquid level
(57) Abstract:Use: agricultural machinery, namely the means of level detection of liquid in the sprayer, the coolant in the expansion tank, etc. the invention: signal generator bipolar pulses arrive at the key element and the block allocation of the low-frequency signal, which also serves a potential sensor for installation in tanks with controlled liquid level. When the potential of the non-zero fires a key element and turns on the light and sound alarm, indicating the presence of an unacceptable level of the controlled fluid. 2 C. p. F. - ly, 2 Il. The invention relates to agricultural machinery, namely by means of level detection fluid sprayers machines for fertilizer, the liquid level of the irrigation machines, as well as other kind of means of control of the liquid level.A device for signaling a critical level of the liquid containing the pulse generator, the sensor for installation in tanks with controlled liquid level, a key element and indicator light. In this case, when the liquid reaches the deleted indicator light.The disadvantage of this device is the presence of hysteresis in the characteristic of the device, the need for constant monitoring of the level of the current operation of the key element and the presence of electrolysis processes in the bulk liquid.Also known device for signaling a critical level of the liquid containing the contact sensor, the signal generator and signal unit, which compares the levels of the signals output from the generator, and one signal is sent directly in a controlled environment, and the other is served on the environment through the partition, the height of which determines the specified controlled level.The disadvantage of this device is its complexity and the impossibility of operational restructuring of a given level of control.The closest to the invention is a device for signaling a critical liquid level, mainly for various kinds of agricultural machines, comprising a generator of bipolar pulses, the contact sensor for installation in tanks with controlled liquid level, a signal amplifier, a key element and a visual indicator. When working with this device the signal from the generator is fed to utilisedictated the liquid level key element is triggered and turns on light indication.The disadvantage of this device is that for adjustment of the level of the sensor it is necessary to readjust the place of its installation, in addition, for liquids with poor conductivity sensor has a narrow range of application.The purpose of this invention is the enhanced operational capabilities of the device, improving reliability and preventing electrolysis and destructive processes in the liquid.This objective is achieved in that the device has a buffer amplifier T-shaped RC filter, driver of the normalized signal, the block selection control signal driver signal audible alarm, in this case, the generator output bipolar pulses through the signal amplifier is connected with the T-shaped RC filter and the input of the key element, the output of which is communicated with the input of the shaper signal audible alarm, the output of the T-shaped RC filter connected with the output of the contact sensor for installation in tanks with controlled liquid level and through the shaper of the normalized signal to the input of block allocation control signal, the output of which is communicated to the input of the buffer amplifier, as nitem, what buffer amplifier is designed as amplifier for composite transistor, and the driver signal audible alarm made in the form of an amplifier element input and inverting output of which is connected through series-connected piezoelectric emitter and diode, in this case, diode is connected in parallel to the collector-emitter junction of transistor, the base of which is connected to the control input of a key element, and between the base and emitter included the bias resistor.Analysis of patent and scientific and technical information showed that the proposed set of features is unknown, i.e. the proposed solution meets the criterion of "novelty."Because this design is made on the basis of known elements, the proposed solution meets the criterion of "industrial applicability".Because the device allows for a higher level to control the level of liquids with poor electrical conductivity without any harmful effects on the liquid or on the material of the sensor, the proposed solution meets the criterion of "inventive step".In Fig. 1 Prescr bipolar pulses 1, the signal amplifier 2, the T-shaped RC filter 3, the contact sensor 4 for installation in tanks with controlled liquid level, a shaper 5 normalized signal, unit 6 selection control signal, a buffer amplifier 7, a visual indicator 8, the supply line 9, the connector 10, the imaging unit 11, an audio alarm, a key element of 12.In this case, the generator 1 is made well-known scheme for logic elements 561 series, they performed and the amplifier 2. The sensor 4 is made in the form of an electrode, placed in an insulated casing, and the end of the electrode protrudes from the housing. Shaper 5 normalized signal performed by the circuit of the current generator and the block 6 - selector. The buffer amplifier 7 is made in the form of a composite transistor, the key 12 can be made in the form of a transistor with base management, and the imaging unit 11 in the form of a logic element 13 is covered by the circuit of the piezoelectric transducer 14 and diode 15, the switching transistors 16. In this case, between the core element 12 and the imaging unit 11 may be an additional amplifying element 17.The device operates as follows.Bipolar signal from the generator 1 through the amplifier is bone actuating signal at the block 6 is missing, because the signal level is insufficient to fully open the driver 5 and therefore block 6 in accordance with the amplifier 7 is closed and the visual indicator 8 is not included. Similarly, not included key element 12, the pulses from the amplifier 2 are not on the imaging unit 11, which does not work. Otherwise, in the absence of the contact sensor 4 with fluid signal after filter 3 without hindrance, due to the greater amplitude, is fed through the imaging unit 5 and unit 6 selects the control signal sufficient to trigger the buffer amplifier 7, i.e., activate a visual indicator 8. At the same time, actuates a key element 12 and begins to pass pulses from the amplifier 2 through the element 17 on the imaging unit 11. Key transistor 16 is also opened, and the sensor (emitter) 14 through it is connected to the sound signal, i.e., includes the imaging unit 11 and the radiation of the sound signal warning about invalid (critical) level of the controlled fluid.The use of this device allows you to effectively monitor critical fluid level, especially with poor electrical conductivity, and also completely eliminates any corrosion is progressive environments used in agricultural production, and effectively kontrolirovat a given liquid level, for example in the tractor vehicle, to control the level of, for example, engine coolant, agricultural workers neg. bodies etc. (56) Patent of great Britain N 2117910, CL G 01 F 23/24, 1983. 1. DEVICE FOR SIGNALING a CRITICAL LIQUID LEVEL, comprising a generator of bipolar pulses, the contact sensor for installation in tanks with controlled liquid level, a signal amplifier, a key element and a visual indicator, characterized in that it is provided with a buffer amplifier, T-shaped RC filter, driver of the normalized signal, the block selection control signal, the driver of the audible alarm signal, and the generator output of the bipolar pulses through the signal amplifier is connected with the T-shaped RC filter and the input of the key element, the output of which is communicated with the input of the shaper signal audible alarm, the output of the T-shaped RC filter connected with the output of the contact sensor for installation in tanks with controlled liquid level and through the shaper of the normalized signal from the input unit vydelenijami visual display and the control input is a key element.2. The device according to p. 1, wherein the buffer amplifier is made in the form of a composite amplifier transistor.3. The device according to p. 1, wherein the driver signal audible alarm made in the form of an amplifier element input and inverting output of which is connected through series-connected piezoelectric emitter and diode, in this case, diode is connected in parallel to the collector-emitter junction of transistor, the base of which is connected to the control input of a key element, and between the base and emitter included the bias resistor.
FIELD: irrigation systems used for automatic watering of plants on restricted area plots.
SUBSTANCE: apparatus has accumulating vessel with bottom opening closed with valve, auxiliary vessel, two float valves, one of float valves being adapted for supplying of water into accumulating vessel and other float valve being adapted for cutting-off water supply. Valve floats are arranged in auxiliary vessel disposed below accumulating vessel bottom and connected by means of flexible pipes with hermetically sealed vessels provided with porous bottoms deepened into soil. When water is sucked through porous bottoms into soil, water level in auxiliary vessel is lowered and float valves are opened, with water being delivered into accumulating vessel through one of float valves. When predetermined water level is reached, valve for discharge opening is opened, water is supplied into low-pressure irrigation system and is further delivered through second float valve into auxiliary vessel. As a result, water level in auxiliary vessel is increased to cut-off water supply into accumulating vessel.
EFFECT: increased efficiency and simplified construction.
FIELD: agricultural engineering, in particular, system for automatic protection and controlling of self-propelled multi-tower sprinkling machines.
SUBSTANCE: hydraulic system has locking device equipped with hydraulic drive and positioned at entrance end of machine, controllable hydraulic relay connected to control pipe extending through each tower and connected to hydraulic relay control unit and through narrowing device to pressure pipeline, return valve, normally open locking valves and actuating devices with tower position sensors disposed on rods which are fixed on housing bars of synchronization mechanism for intermediate supporting carts, hydraulically controlled valve mounted in feeding line of hydraulic drive for terminating cart and hydraulically communicated with control pipe. Actuating devices are connected through inlet pipe unions with control pipe via normally open locking valve by means of T-pipe, and through outlet pipe union with atmosphere. Tower position sensors are formed from plates made of fluorinated plastic material and equipped with slot widening at its ends. Plates are fixed on rods of synchronization mechanism by means of bolt connection so that said plates are movable axially of rod. Silicone pipe positioned within slot is joined with inlet and outlet pipe unions rigidly fixed within housing of synchronization mechanism for intermediate towers. Hydraulic communication between narrowing device and pressure pipeline is provided through return valve.
EFFECT: simplified construction and enhanced reliability in operation.
FIELD: agriculture, in particular, irrigation systems, more particular, controlling of water flows supplied into upstream of open irrigation system.
SUBSTANCE: apparatus has upper, lower and minimum level sensors made in the form of hermetic contacts mounted on floats, in upstream water-intake construction, within hollow sleeves cooperating with magnets immovably fixed on sleeves. Hermetic contact of upper level sensor is connected to power unit through time delay relay, receiving-transmitting unit connected to unit for controlling of electric engine of downstream pump-and-power unit, control unit for main electric hydraulic relay and in parallel with end switch mounted on hydraulic drive of locking apparatus engageable with stop positioned on hydraulic drive stem in upper position of pump. Hermetic contact of lower level sensor is connected to power unit through time delay relay, receiving-transmitting unit, unit for controlling electric engine of downstream pump-and-power unit, control unit of additional electric hydraulic relay and in parallel with second end switch also mounted on hydraulic drive of locking apparatus and engageable with said stop in lower position of pump. Hermetic contact of minimum level sensor is connected to power unit and unit for controlling electric engine of upstream pump-and-power unit.
EFFECT: increased efficiency by providing automatic controlling of water flow rate supplied to upstream of open irrigation system.
FIELD: irrigation systems for automatic irrigation of plants on restricted areas.
SUBSTANCE: apparatus has accumulation reservoir with bottom opening closed with valve, auxiliary reservoir, two float valves, one of said valves being designed for feeding water to accumulation reservoir and other valve serving for cutting-off said feeding process. Valve floats are positioned within auxiliary reservoir positioned lower than bottom of accumulating reservoir and connected through flexible pipelines to hermetically sealed reservoirs having porous bottoms and embedded in soil. Drawing of water by soil through said bottoms results in reduction of water level within auxiliary reservoir. Float valves are opened and water is delivered through one of said valves into accumulating reservoir. On reaching of predetermined water filling level, discharge opening valve is opened and water is delivered into low-pressure irrigation system and through other float valve into auxiliary reservoir. Increase in water level within accumulation reservoir cuts-off feeding of water into this reservoir. During operation of high-pressure irrigation system, functioning of apparatus is regulated by filling of accumulation reservoir to certain small volume and stabilized by means of detachable reservoir adapted to be mounted on accumulation reservoir and having horizontal partition walls.
EFFECT: increased efficiency and enhanced reliability in operation of apparatus.
2 cl, 3 dwg
SUBSTANCE: invention refers to the irrigation systems and can be used, in particular, for automatic watering of plants in garden sites and kitchen gardens. The device for automatic watering of plants includes a feeding tank with a siphon established on a mark of operation, starting chamber and evaporating tray. The feeding tank is supplied with cutout lever valve and an overfall tube. The starting chamber has the form of bucket and is executed with possibility of free rotationally oscillatory movement around pivotal axes between two fixed stops. The evaporating tray is established on the springs which have been put on dowels, fixed on the top edge of the feeding tank wall. The plunger is located rigidly on the evaporating tray connected pivotally with the lever of cutout valve. The valve is installed on the cutout valve entering and regulating water current. The overfall tube is connected to an irrigating network.
EFFECT: provision of rational use of water for plants watering.
SUBSTANCE: automated irrigation system equipped with low pressure rotating sprinklers consists of hydraulic pumping station, containing turbine connected with a shaft of high and low pressure pumps. The central control board is connected with automatic weather station, metre, placed on the low pressure supply pipeline of irrigation system, and winding of commutating three-way valve, the inlet of which is connected with the outlet of the high pressure pump, and the outlet with the inlet of the high pressure supply pipeline. The outlets of the high pressure supply pipeline are connected with the inlet of the first tree-way valve of the control systems and hydraulic protection of sprinklers from failures, the drive of which is connected with a plunger of ratchet gear, and diaphragm actuator of which is connected with high pressure supply pipeline. The outlet of the first three-way valve is connected through throttle with diaphragm actuator of double throw switch, interacting with the drive of the second three-way valve, the inlet of which is connected with high pressure supply pipeline, and the outlet is connected with feed line of hydraulic drive of the sprinkler and line of hydraulic protection of the sprinkle from failures through the cut-off valve. The outlet of the line of hydraulic protection is connected with the diaphragm actuator of the cut-off valve and diaphragm actuator of hydrorelay controlling hydraulic drive gate valve, placed on the inlet of the sprinkler. The outlet of the feed line of hydraulic drive is connected with through three-way valve with end pulse sprinkler, and the drive of the third three-way valve is connected with on-off mechanism connecting pulse sprinkler with the feed line of hydraulic drives, which contacts with the sensors of the beginning and the end of sprinklers passing the corner sector.
EFFECT: invention allows simplifying automated control system, increasing quality of irrigation.
SUBSTANCE: method includes creation of irrigation sections at southern slopes with wide stationary beds with narrow trenches and dead-end irrigation furrows at the edges of beds. Trenches are laid along the middle of beds and filled with vegetable remains, manure and coated with mulch of vegetable remains. Californian worms are added into narrow trenches arranged in the middle of beds. Distance between dead-end furrows makes 1.2…1.8 m and corresponds to distance between wheels of agricultural equipment. Beds and dead-end irrigation furrows are arranged at both sides from self-discharge pipeline of irrigation network in irrigation section and laid at the angle to area horizontals. Slope of irrigation furrows does not exceed inclination of 0.005. Yearly in autumn narrow trenches are released from biohumus and filled with a new mixture of vegetable remains and manure. System of melioration comprises irrigation systems on irrigation sections. Irrigation systems comprises self-discharge pipeline laid along maximum slope of area, stationary beds, dead-end irrigation furrows, measuring and computing system. Measuring and computing system is connected by radio channel to central control panel of irrigation systems in irrigation sections, which are connected to signalling indicator of irrigation termination and double-wire communication line to devices of gates control. Devices of gates control are installed on units of irrigation system, inlet of which is connected to discharge pipeline, and outlet - to irrigation pipelines and microhydrants for water supply. Irrigation pipelines are laid parallel to discharge pipeline. Vortex water activator is installed on discharge pipeline. Signalling indicator of irrigation termination is arranged in the form of two soil moisture detectors, the first of which is installed in lower horizon of active soil layer. The second detector is installed at lower border of active soil layer.
EFFECT: invention makes it possible to improve quality of irrigated sections melioration in piedmont area, to eliminate losses of irrigation water for depth filtration and discharge, to improve crop capacity and increase efficiency of irrigation systems.
2 cl, 1 dwg
SUBSTANCE: the device comprises a system of injection wells, output wells and water distribution network with wells and surge units for aerosol moisturing. The injection wells contain gas-vapour or electric generators installed along the outer frame and inside the aquifer. The output wells contain pumps. The water distribution network with wells and surge units for aerosol moisturing is installed on the irrigated plot of the field. The gas-vapour generator contains a combustion chamber. The combustion chamber has a lid on one of its sides with an inlet valve to feed pressurized air from the piston compressor. Another side of the combustion chamber is fitted with outlet from extracting burned gas, combined nozzles for injecting the mixture of fuel thermal breakdown products and conductive fluid. The combined nozzles are installed on the combustion chamber wall in series one after another. The burner nozzles are installed adjacent to combined nozzles, they are used for injecting hot products of thermal breakdown of conducting fluid and products of burning the gaseous fuel-air mixture. The burner nozzle is connected with the piston valve mechanism. The piston valve mechanism contains a cylinder with a piston and a spring. The cylinder is fitted with a duct feeding pressurized air from the receiver. The receiver has a back flow valve and ducts fitted water-injecting nozzles. The ducts are connected with the cylindrical part of the valve mechanism. The cylindrical part of the valve mechanism has a blow valve for releasing the gas-vapour mixture into the atmosphere and a flange for fixation on the casting pipe of the injection well. The injection well is connected with the tubing string. The surge unit contains a receiving chamber. The receiving chamber has a back flow valve with water pressure. The receiving chamber is connected with the mixing chamber. The mixing chamber is fitted with a nozzle, and the surge unit is installed on a pillar. The pillar is connected inside the well to the water distribution network. The water network has a hinge connection to change the inclination angle of the bore, a jointed support used to rotate it the bore on the platform and a combustion chamber with expanding nozzle. The burner nozzles have a frame with hoses for conductive fluid feeding. The hoses are connected with cylindrical ducts. The cylindrical ducts are located inside the frame in the insulated layer. The electrodes are installed on one side of the cylindrical ducts. The electrodes are connected to the surge generator. Nozzles are installed on another end of cylindrical ducts. The nozzles are installed at an angle in relation to each other and are connected to the spraying nozzle blasting chamber. The spraying nozzle has a bottom with gas stream outlets.
EFFECT: the construction ensures high production yield of crops.
3 cl, 14 dwg
SUBSTANCE: device of automatic control of mist-generating plant relates to gardening, namely to vegetative propagation of horticultural crops by the method of herbaceous cuttings. The device comprises operating mode switches on the number of units of mist-generating plant, a commutation switch to connect the power source to the units of mist-generating plant and cyclical timing relay that determines the duration of the presence or absence of each unit power. The cyclical timing relay consists of a microcontroller, a real-time clock, a memory module, two encoders, control buttons and an alphanumeric LCD display.
EFFECT: device of automatic control of mist-generating plant provides optimisation of watering mode by an independent set of time of watering and the time of pause separately for several intervals within the day, such as morning, day, evening and night.
SUBSTANCE: automated check outlet conduit comprises a lock installed on a water-outlet hole on a horizontal axis of rotation, a control chamber with an elastic shell, communicated with reaches, a valve connected with a level sensor, limiters of the control range. The automated check water outlet is equipped with a stem for fixation of the range of discrete control within wide limits, having a movable float level sensor. The control chamber is equipped with an outlet nozzle, on which there is a magnet for valve fixation. At the same time limiters of the control range are made in the form of fixators, one of which is arranged in the upper part of the stem above the movable float level sensor, and the other ones are arranged above the outlet nozzle of the control chamber.
EFFECT: expanded control range and stabilisation of device operation under various heads.
FIELD: domestic chemistry; production of cat litters.
SUBSTANCE: cat litter is made from silica gel which is obtained from wastes of ethanol process by ethylene hydration. Method of production of litter includes the following operations: sifting-off dust-like fraction at grain diameter lesser that 0.5 mm, activating the working fraction no less than 0.5 mm at temperature of 120-150°C continued for 3-5 h.
EFFECT: increased moisture capacity; low cost of filler.
3 cl, 1 tbl, 1 ex
FIELD: individual hygiene articles and sanitary-hygienic devices for domestic, medicinal and special purposes, in particular, consumable members of "dry" toilets.
SUBSTANCE: waste isolating bag has at least one gluing member adapted for closing of aperture by forming hermetically sealing glue connection for joining upper parts of inner sides of bag opposite wall panels. In non-utilized state, bag may be folded in such a manner that its gluing surfaces are contacting with specially designed surface portions having low adhesion to glue so as to form readily opened glue connection. Construction of bag allows wastes to be isolated so that bag material does not experience substantial deformation. All the members of bag may be made from fully compostable and relatively cheap materials, such as water-proof paper with biologically decomposed glue. Bag is put to operating state for isolating of wastes from environment with the use of simple manipulations. Bags of such constructions may be adapted to mechanization by means of simple technical facilities.
EFFECT: simplified construction and increased efficiency in isolating of wastes from environment.
3 cl, 5 dwg
FIELD: devices for manual gathering and removal of animal excrements.
SUBSTANCE: proposed device has body with hygienic cartridge secured in it. Device is additionally provided with mechanism for forming rarefaction and building-up pressure of air, storage battery, airtight partition, unit for storage of space hygienic cartridges and control unit. Front part of body has hole for taking excrements. Mechanism for forming rarefaction and building-up pressure of air and storage battery are located in center part of body. Unit for storage of spare hygienic cartridges is located in rear part and is separated from mechanism for forming rarefaction and building-up pressure of air by airtight partition. Body has air intake hole between mechanism for forming rarefaction and building-up pressure of air and airtight partition. Device is also provided with control unit.
EFFECT: ease in use.
5 cl, 1 dwg
FIELD: animal toilets and method of preparation of such toilets.
SUBSTANCE: proposed animal toilet contains mixture of absorbing material made from clay and silica gel at average diameter of pores of about 8 nm to about 10 nm; amount of silica gel ranges from 5% to 50% and amount of clay ranges from approximately 50% to 95% (mass-%).
EFFECT: low cost of process of preparation; enhanced absorptive capacity.
37 cl, 8 tbl, 8 ex