RU2013366C1 - Liquid dispensing device - Google Patents

Abstract

FIELD: metering devices. SUBSTANCE: device has metering vessel 5, which is lowered by means of drive 6 against stop. Liquid is passed through pipe 9 to be delivered into vessel 7 up to edges of vessel 5 (divider 8) and flows over edges to fill resilient portion 14, suction elbow 12, metering vessel 5, vessel 7 disposed above pipe 9 and through pipe 10 to the level of reservoir 1. Upon passage through lower part metering vessel is displaced upward. Liquid flows from pipe 10, vessel 7 and pipe 9. When vessel 5 is lifted, the level of liquid in it is practically not changed, but the level of liquid in suction elbow 12 of syphon is raised. When liquid fills syphon to the level of section 11, syphon is charged and liquid is automatically dispensed. EFFECT: increased efficiency and enhanced reliability in operation. 3 cl, 1 dwg

Description

 The invention relates to measuring volume, and in particular to dispensers for repeated measurement and delivery of predetermined volumes of liquid, and can be used to fill containers with liquid.

 A device for dispensing a liquid is known, comprising a consumable reservoir mounted for movement along a fixed measuring tank located in a consumable tank and equipped with a siphon with an elastic section connected at one end to the suction and the other to a drain section of the siphon rigidly connected to the tank. The device also comprises a fluid supply pipe and a compressed air supply system with elastic valves [1].

 This device has a complex structure and is not reliable enough, due to the presence of a compressed air supply system, valves necessary for the device to operate, and requirements for the tightness of the supply tank.

 In addition, for the operation of such a device, it is necessary to maintain a constant level in the supply tank, for example, using a float regulator.

 As a result, a large amount of liquid remains in the reservoir.

 Another device for dispensing liquid is known, comprising a base and installed with the possibility of movement in the direction of the normal base, a supply tank and a measuring tank equipped with a siphon with an elastic section and with a charging section made with the possibility of movement relative to the measuring tank (application N 4921470, positive decision from 1/30/92).

 Such a device is simpler in design and more reliable. However, this design does not allow to reduce the remaining liquid in the supply tank (the remaining liquid in height is not less than the level determined by the height of the measured capacity).

 The purpose of the invention is the creation of a device for filling liquids, allowing to dispense from the supply tank all the liquid.

 To achieve this, in a device for filling liquid containing a base and installed with the possibility of relative vertical movement of the supply tank and measuring tank and connected with it a siphon with an elastic section, motionlessly connected to the tank, the measuring tank is located outside the supply tank, and the device is equipped with an additional capacity, fixed relative to the measured capacity, connected to the latter hydraulically at the level corresponding to the measured dose, and connected to the supply tank elastic tube with the formation of communicating vessels.

 In addition, additional and measured tanks can be made in the form of a cylinder with a partition.

 The supply tank, the additional and measured tanks are sealed with caps, the gas spaces of the supply tank and the additional tank are connected by an elastic tube, and the supply tank is connected to the system or atmosphere.

 The location of the measuring tank outside the supply tank allows you to lower the upper edge of the measuring tank below the bottom of the tank, which is necessary to empty the latter.

 Providing the device with additional capacity, fixed relatively measured, allows you to communicate the flow tank with measuring capacity when it is full and disconnect when issuing a dose.

 The connection of the additional tank with the measured hydraulically at a level corresponding to the measured dose allows filling the measuring tank to this level and the transfer of excess liquid into the additional tank.

 The connection of the additional tank with the supply tank with an elastic tube, forming interconnected vessels, allows for the flow of liquid from the supply tank to the additional tank, which is necessary to fill the measured one, and the reverse flow of excess liquid from the additional tank to the supply tank when it is raised relative to the latter (at the time of measuring and dispensing a dose of fluid). The elastic tube in this connection provides mobility of the additional capacity relative to the flow tank.

 The implementation of additional and measured tanks in the form of a cylinder with a partition is a variant of the simple and technological design of these tanks.

 The implementation of the supply tank, additional and measured containers with sealed lids and the connection of the gas spaces of the supply tank and containers with an elastic tube eliminates gaskets (or valves) and allows the filling of aggressive liquids without releasing gases into the surrounding space, the elastic tube also provides mobility of the additional container and forms a volume, filled with dosing liquid when lowering the containers below the liquid level in the supply tank.

 The drawing shows a diagram of the proposed device with a fixed flow tank in a sealed design for filling aggressive liquids.

 The device comprises a supply tank 1 mounted stationary; lower 2 and upper 3 bases connecting the guides 4; measuring tank 5 mounted for movement along the guides 4 under the action of the drive 6; additional capacity 7, communicated with the measuring capacity 5 from above through the partition 8, as well as with the flow tank 1 below - an elastic tube 9 and above - an elastic tube 10; a siphon with a charging cross-section 11 and a suction 12, drain 13 elbows and an elastic section 14, which communicates the measuring tank 5 with a siphon. The siphon is fixedly connected to the supply tank 1 and installed so that its charging cross section 11 is higher than the liquid level in the last (or in the tube 10) and below the edges of the measuring tank 5 in its upper position.

 The device operates as follows.

 In the initial position, the empty measuring tank 5 is located at the top, the supply tank 1 is filled so that the level in it (or in the tube 10) and additional capacity 7 below the partition 8; an empty container is installed under the drain knee of the 13 siphon.

 To issue a dose, the measuring tank 5 under the action of the drive 6 (or manually) is lowered to the stop. In this case, the liquid from the tank 1, descending along the tube 9, enters the tank 7, fills it to the edges of the tank 5 (septum 8), and then, overflowing over the edges, fills the elastic section 14 and the suction elbow 12, the measuring tank 5, the tank 7 above the partition 8 and the tube 10 to a level in the tank 1. However, the liquid level in the elbow 12 of the siphon remains below its charge section 11.

 After passing the lower position, the measuring tank 5 under the action of the actuator 6 (spring or counterweight) begins to move up. Now the liquid makes a reverse movement (flows into the supply tank 1): the tube 10, the container 7 and the tube 9 are released (depending on the supply of liquid in the system).

 With a further rise in capacity 5, the level in it practically does not change, but the liquid level in the suction elbow 12 of the siphon rises. When the liquid fills the cross section of the 11 siphon, the latter is charged and the dose is automatically dispensed.

 Thus, when moving the tank 5 up and down relative to the tank 1, the necessary operations automatically occur: in the lower position - filling the tank 5, in the upper position - measuring and issuing the dose.

 For normal operation of the device, it is necessary that in the lower position of the measured capacity its reliable filling occurs (i.e., that the level has time to rise above its edges), and in the lower - so that the siphon is charged after measuring the dose (i.e., after lowering the level below its edges). This is achieved by appropriate selection of the parameters of the hydraulic and mechanical systems of the device.

 Compared with the prototype, the proposed device allows, firstly, to complete the complete emptying of the supply tank; secondly, use the existing collection of the finished product as a supply tank; thirdly, to exclude the level regulator from the circuit, and with it all the remaining movable elements operating in the environment; fourthly, to obtain a sealless hermetic design, which is especially important for some chemical products that crystallize in contact with air, for example, chlorine tin.

 However, the above advantages are achieved due to a slight increase in the stroke and filling error.

Claims (3)

 1. DEVICE FOR BOTTLE OF LIQUID, containing a base, a supply tank, a measuring tank and communicated with the last siphon with an elastic section, fixedly connected to the tank, characterized in that it is equipped with an additional measuring tank, fixedly installed relative to the main measuring tank and hydraulically connected to it at the level corresponding to the measured dose and connected to the flow tank by an elastic tube, while the main measuring tank is located outside the flow tank and installed in the ability to reciprocate vertically.  2. The device according to p. 1, characterized in that the additional and main measuring tanks have a common housing made in the form of a cylinder with a partition.  3. The device according to claim 1, characterized in that the supply tank, additional and main measuring tanks are sealed with caps, and the gas spaces of the supply tank and additional capacity are communicated with an elastic tube.