SU1037076A1 - Device for batch-type metering of liquids - Google Patents

Abstract

DEVICE FOR batching liquids, comprising a dispensing container with kPa pas drinking himself and drain contact disposed in the tank piezometric tube connected with the air preparation unit and a camera with the positive U -shaped tube filled with liquid and a control unit comprising trehmembrannoe relay bopshoe backwater trehmembrannoe small back pressure relay, dose, three three-membrane turnips with a spring, two of which are connected according to the trigger scheme with separate inputs, and one - according to the BANE scheme, the inertial link, is connected An output with a resolution camera of the BREAD element, the common output of which is connected by a channel. Closed-open with a drain valve, and an interdiction camera of the signal connected to the second control output of the control unit whose first control output is simultaneously connected to the switch input of the first trigger with separate inputs, the output of which is connected by a channel Closed-open with the filling valve and with the reset input of the second trigger with separate inputs connected by a switching input to the common output of three The small relay backpressure relay and the output simultaneously to the input of the inertial link and the return input to the initial position of the first trigger, characterized in that, with the aim of ensuring reproducibility and improving the metering accuracy while maintaining the quality of the product prone to infection, it is equipped with a trimembrane relay (L RESET and a float with a valve placed in the positive chamber of the U-shaped tube inside which the seat is made, while the space of the U-shaped tube under its saddle is connected by a channel with a constant choke, communicating with the atmosphere and with the input of a three-membrane O high pressure relay connected to a three-membrane low pressure relay according to the logic circuit NOT, the pressure indicator is connected to the dose amp, and the inputs are connected to a common power source, the control chamber and atmospheric O5 on the RESET relay chamber are connected respectively to the first control output of the control unit and the output of the inertia link.

Description

11 The invention relates to devices for dispensing liquid media in units of mass and can be used in the microbiological, medical and food industries in the preparation of food with liquid solutions. A device dispensing Yid bones comprising piezometric tube connected with impupsnoy piniey differentsiapnym matometrom, BpoCom device epektropnevmagicheskim ispopnitepnym protection mechanism and the contact pin immersed in the conductive liquid and -shaped manometer soobschen5yugo with impupsnoy piniey piezometric tubes Cl. Most closely related to the predictable technical essence and the achieved effect is a dispenser of volume-discrete action with a correction for the density of the dosing medium, including the control cabinet and the dosing capacity. The control cabinet contains a liquid manometer unit, an electrical unit, a unit with mechanical components, air preparation devices, which include a pneumotumbler, a filter, a stabilizer and a sensor, a setpoint gauge and pressure gauges. The pre-armature tank takes a cylindrical stainless steel vessel with a lid, which is equipped with filling, draining and rinsing caps, and a piezometric tube running through the lid, reaching the bottom of the vessel and having an oblique cut-off end for air outlet. The unit of the liquid manometer is placed on the rotary stand and consists of a tank and seven in-meter tubes with a scale. The tank has a single and drain hole, closed with threaded plugs with rubber seals. Acidic distilled water is poured into the tank. Stainless steel electrodes are placed inside the water tubes and can be vertically meshed. The six water tubes with electrodes are designed to produce six different dosage regimens, and the seventh are for fixation. discharge dose. Power supply and command of the india software device are ruled by signal lamps. The scale of the liquid manometer is tared in liters of the dosed molasses solution. The cycle of the dispenser operation, the switching of electrodes (metering directions) is carried out by the software device according to a predetermined hard program 2. 76 The disadvantages of the known devices are a gradual deterioration in reproducibility and a drop in metering accuracy during operation and due to the low hope of contact sensors (electrodes and plugs immersed in an electrically conducting fluid). The part of the electrode surface that is in contact with the conductive liquid is ultimately corroded by the action of solutions of acids and salts. So in the NSE solution for a long time even such resistant corrosion-resistant steels, such as Kh18N9T, Kh18N1OT, do not withstand. In addition to TorOi, by passing direct current through electrodes, their length and active surface will decrease with time due to electrolysis and efficient chemical reactions with aggressive components of the solutions, as well as corrosion. The latter results in a decision on weight dosing, in particular, in an unplanned increase in weight doses and non-reproducibility in weight dosing. In addition, a volume-discrete dispenser cannot be used for dispensing liquids under sterile conditions. When sterilization is carried out by an antiseptic of a liquid manometer block, an electrically conductive liquid may be mixed with an antiseptic, which disrupts the normal operation of an electrocontact sensor due to a decrease in the conductivity of the liquid. Add part of the antiseptic to the electrically conductive fluid. besides, it increases its volume, i.e. changes the height of the liquid column in the liquid manomatr unit and, therefore, leads to a change in the estimated dose setting. When alcohol is used as an antiseptic, volatile ether and ethyl chloride are formed, resulting in a decrease in the electrical conductivity of the solution. In the case of using an aqueous solution of copper sulphate as a conductive liquid, precipitated copper hydroxide is formed and the conductivity of the solution will also decrease. All this leads to a loss of performance of the liquid manometer unit and to the failure of the device in the circuit. The aim of the invention is to ensure reproducibility and increase the accuracy of dosing while maintaining the quality of the product prone to infection.

The supply chain is achieved by the fact that a device containing an aeuufacient container with valves for napiv and spnva, a piezometric tube placed in the tank, connected to the air preparation unit, and with a positive chamber of the U-shaped tube filled with liquid, and a bpok controller, including a three-membrane turnips large backwater, three-membrane turnip of small backwater, dose adjustors, three three-membrane turnips with reed, two of which are connected according to the trigger scheme with separate inputs, and one - according to the BANE scheme, inertial link, connected output ohm with the resolution camera of the prohibition element, the common output of which is connected by a channel Closed-open with the drain valve, and the signal inhibiting chamber is connected to the second control input of the control unit, the first control output of which is simultaneously connected to the switching input of the first trigger with separate inlets, the output of which is connected by a channel. It is closed-open with a filling valve and with a return input to the initial state of the second trigger with separate inputs, connected in, switch house to the common output of three; the small overpressure and output relay simultaneously to the inertial link input and the return input to the initial position of the first tractor, is stabilized with a three & membrane turnip RESET and a float with a valve housed in the positive chamber and the i-shaped tube, inside which is made a seat that interacts with the valve, the space and the образ-shaped tube under the saddle are connected by a channel with a constant choke, which is connected to the atmosphere, and to the input of a three-membrane high-pressure relay connected to a three-membrane small-pressure relay by logic e is NOT, where the gypodor cameras are connected with the setpoint controllers, and the ports are connected to a common power source, the control camera and the atmospheric camera on the RESET button are connected to the first control output terminal and the inertia link.

The drawing shows gfnshshppva scheme of the device.

The device for weighing portions xxx dshhenrovaki liquids consists of that dosing tank 1 with a valve closed 2 nalkva and normally closed; 1st KTianauoM 3 drain. Inside-capacity

1, a piezometric tube 4 will be arranged, the crtotor is connected to block 5 air preparation and pulsed li 6 with a positive chamber of a U-shaped tube 7 filled with a liquid, for example water. The tube 7 is provided with a seat 8, which interacts with the valve 9, which is attached to the float 10, immersed in a liquid and a tube. Minus tube tube 7 co. &Amp; price with atmosphere.

The process of weighing batch dosing is controlled by a circuit including a control unit 11, a three-membrane turnip 12 large overhead and a three-membrane turnip 13 with a small sub-support, a three-membrane relay with a spring 14-1-14-4, an unregulated 15 and an adjustable 16 throttles, a pneumatic tank 17. A number of three-membrane a spring relay is determined by the number of commands required to implement the device operation algorithm. Turnips 14-1 and 14-2 are included as a trigger with separate inputs. Supply 18 and 19, respectively, relays 14-1 and 14-2 are supplied with a supply pressure of 0.14 MPa.

Repe 14-3 is enabled according to a scheme reprinting the logical operation Ban. Inlet 2O is supplied with supply pressure, and inlet 21 communicates with the atmosphere. In the initial state, the membrane block of turnip 14-3 under the action of the spring occupies the upper position. When a dispensing signal is applied to input 22 and there is no prohibition signal at input 23, the membrane bpok turnip 14-3 takes the position by opening the conn associated with the power line and closing communicating with the conjoined atmosphere.

Universal relays with backwaters and 13 are connected according to the scheme that implements: the Pogic operation is NOT. The pressure of the backpressure is selected depending on the operating conditions. If under the influence of the pressure of the overpressure the supply tank must be closed, the overpressure is set to approximately 0.09 MPa, otherwise 0.04 MPa is sufficient. Inputs 24 and 25 of turnips 12 and 13 are connected to the pits line. At the input 26 to the blind chamber of the relay 12, a large backwater is applied, and to the input 27 of turnip 13, a small backwater is applied. Entrances 28 in. 29 relays 12 and 13 are connected to the atmosphere. A control signal is applied to input 30 of relay 12. In the initial state, the membrane block of relay 12 is & ver

In this case, under the action of a large overpressure at the inlet 26. The nozzle, which is connected with the power supply through the inlet 24, is closed, and the nozzle is open, communicating with the atmosphere. The turnip 13 diaphragm block is located in the lower popesy under the influence of a small backwater at the inlet 27. The soppo communicating with the atmosphere (inlet 29) is closed, and the coppo communicating with the power supply (inlet 25) is open. In the initial state, under the action of a spring, the membrane box 14-4 occupies the upper position. Coppo, which communicates with Pini 31, is closed.

The combination of the adjustable reedsep 16 and the pneumatic tank 17 is an inertial link intended for carrying out temporary operations. Moreover, the inertial link is connected to the output by a pneumopini 31 CQ input 32 turnips 14-4 and input 22 permitting turnips 14-3, the total output 33 of which is connected to papal 3 sleeps. The anti-alarm camera for turnip 14-3 is connected via input 23 to the second control output of the control unit, the first control output of which is simultaneously connected to input 34 of switching turn 14-1, output 35 of which is connected by line 36 to valve 2 loading, to input 37 return to the initial state mie turnip 14-2 and to the input 38 of the relay 14-4-. Relay 14-2 input 39 is switched to the first output 40 of relay 13, which is connected to the second output 41, and CBotiM output 42 to the inertial link input and reset input 43 of relay 14-1.

The space under the saddle of the 8 U-shaped tube 7 is connected to a constant throttle 15, which is connected to the atmosphere, and to the input 30 of the relay 12. To bleed air from the tank 1, when metering; fluids into free-flow systems, a cylinder is provided 44, connected with the control unit 11. When dispensing liquid products under pressure, the valve 44 is connected by pipeline to a source of compressed gas, the pressure of which is regulated depending on the pressure of the medium being metered. In deaf chambers, relays 12 and 13 at inputs 26 and 27 create large and small backwaters by pulling the control cable from the main air guide setters 45 and 46

Usgroisk, works as follows.

A command from the control unit 11 receives a discrete signal at the relay switch input 34 14-1, at the relay 38 input 14-4, at the input 37 relay 14-2. The appearance of the signal at input 38 causes the membrane unit to move to the lower position. A nozzle connected to pneumole 31 through inlet 32 communicates with the atmosphere, air c. The lines 31 and the air capacity 17 are vented. Under the action of a signal at the inlet 37 of resetting the relay state 14-2, the membrane unit moves to the upper position, closes the valve, communicating via input 19 with the power line, opens the nozzle in the chamber with a spring. The signal at output 42 of relay 14-2 is released through an open nozzle, input 39, common input 47 of relay 13, first output 40 and input 29 of relay 13. Relay 14-2 is reset. At the switching input 34 of the relay 14-1, the signal passes through the open nozzle at the output 35 and simultaneously enters the inputs 48 and 49. Under the action of the signals at the inputs 48 and 49, the diaphragm unit occupies the lower position, the connection in the chamber with the spring is closed, signals at output 34 and output 35 are uncoupled, a nozzle opens, communicating via input 18 with the power line, at the input of the relay 14-1 and in line 36 a continuous pneumatic signal appears that opens the filling valve 2, as a result of which the liquid begins to flow into dosing capacity 1. By m By filling with liquid product, I eat

Bone 1, the pressure in the positive chamber and the I-shaped tube 7 increases, the level of fluid in it drops, and with it, the poppavok 10 with valve 9 is lowered until the valve is not in the saddle 8 and the valve is blocked, thereby breaking connection of the positive chamber under the saddle with the piezometric tube 4. The residual pressure in the chamber under the saddle 8 is released through the constant throttle 15 into the atmosphere, as a result of which there will be no signal at the inlet of the DA. The membrane block relay 12 under the action of large

the overpressure occupies the upper pop-up and opens the nozzle communicating with the atmosphere, and the nozzle communicating with the power line through the inlet 24 closes. At the first exit 50, the 12-cs chain at the input 51 of turnip 13, the signal is graphed. Block

membranes of the relay 13 under the action of map support at the input 27 occupies the lower position. Soppo, reported by the entrance

29, with the atmosphere, is closed, and the connoption communicating with the power supply opens. At the common output 47 of the turnip 14 V, the single signal appears at input 39. Appeared at the input 39 of the reverse switch 14-2, the signalp arrives at the output 42 and at the same time at the inputs 52 to 53. Under the action of the signal at the inputs 52 to 53, the membrane unit of the turnip 14-2 occupies the lower position. The signaling m inlet 39 and outlet 42 is disconnected, the nozzle opens, correspondingly with a pin of a lithium. At output 42 of turnip 14-2, a nonschrilling unit 1 of an unhealthy SVTP appears, which simultaneously connects to a reset state 43 of the relay 14-1 in at the input of the {eveneven) (throttle 16 in air inlet 17). The appearance of a single signal at the return to the initial state 43 of the input state causes the movement of the blocks to the upper position. Communicating with the power line, the conn closes, and the conjoin opens in the spring chamber. The signal at the output of Sv pene 14-1 in pnvmoliniya 36 is etched through the entrance E4, psvmolinii 54 to 55 in the side of the utah & Valve valve 2 is closed, filling stops. In the dosing container 1 a predetermined copy of the liquid is collected; Signal. From the output of the signal with a definite delay, so that the valve of the valve 3 opens only after the valve of the base 2 is closed, enters input 22 of the resolution of signal turnip 14-3 and input 32 of the circuit 14-4. The turnkey 14-3 membrane block occupies the lower position, which communicates with the atmosphere, closes, and opens with the pinway.

power nozzle. At the first exit 56 and the second exit 57, connected by a common exit 33, a single one appears, which opens the gateway. 3 The dispensed portion of fluid begins to drain into receiver 58.

After draining the liquid from the control unit 11 to the demand unit, the signal is fed to the prohibition input of the relay signal 14-3, the expletive unit takes the upper position and a nozzle communicating with the atmosphere is opened. The signal at the first output 56 and at the second, output 57, connected by common output 33, is released, the drain valve 3 is closed. Then, at the command nt stepped from control block 11, the cycle is repeated in the described sequence.

The use of the invention in microbiological productions provides reproducibility and improves the accuracy of the process of weight dosing of liquid media, which allows for strictly rationed additions of nutrient dilutions to fermentation devices. In addition, it allows chemical sterilization of the device without affecting the composition of the fluid in the u-tube with antiseptics, since such liquids can be suitably used: ammonia, water, alcohol, etc., etc. . e. they themselves are snabbering agents. The ability to sterilize a pre-fusion device necessitates its use for the weight dosing of liquid media under sterile conditions, which expands the two-step use of the device for the weight dosing of the dosing device.

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S-hi

Claims (1)

DEVICE FOR PORTIONAL DOSING OF LIQUIDS, containing a dispensing container with dispensers of drink and drain, a piezometric tube placed in the container connected to an air preparation unit and to a positive chamber (J-shaped tube filled with liquid and a control unit including a three-membrane turnip of a large backwater, three-membrane turnip small back pressure, dose adjusters, three three-membrane relays with a spring, two of which are connected according to the trigger scheme with separate inputs, and one - according to the PROHIBITION scheme, inertial link, connected output a house with a signal-resolution camera of the BAN element, the common output of which is connected by a 'Closed-open' channel with a discharge clan, and a signal-ban camera is connected to the second control output trigger with separate inputs, the output of which is connected by the channel “Closed-open” with a drink valve and with the reset input of the second trigger with separate inputs, connected by the switching input to the common output of the three-membrane the turnip of small backwater and exit simultaneously to the input of the inertial link and the input of returning to the initial position of the first trigger, characterized in that, with a chain for reproducibility and increased metering accuracy while maintaining the quality of the product prone to infection, it is equipped with a three-membrane turnip RESET and a float with a valve placed in the positive chamber of the U-shaped tube, inside of which a saddle is made, while the space of the U-shaped tube under its saddle is connected by a channel with a constant throttle communicating with atm by the sphere, and with the input of a three-membrane relay of a large backwater connected to a three-membrane turnip of a small backwater according to the logic NOT, the back-up cameras are connected to the dose adjusters, and the inputs are connected to a common power source, the control camera and the atmospheric camera of the RESET are connected respectively to the first control output control unit and exit inertial Even. 1 1037076