RU234193U1 - Automatic dosing device - Google Patents

Abstract

The utility model relates to the field of water supply and sewerage. The device comprises a container with a formed neck with a lid, a branch pipe and a T-shaped groove for fastening by means of a lever bracket. A dosing unit is installed in the branch pipe, fixed by means of a sealing ring, including a dosing chamber limited by inlet and outlet valves located on a stud with bushings for changing its volume. In this case, one arm of the lever is designed with the possibility of controlling the valves of the dosing unit, and on the opposite other arm, unused bushings for changing the volume of the dosing chamber and a float with an opening fixed by a conical retainer are placed in series. The lever is connected to the bracket with a pin. Recesses for its fastening are formed in the container. Technical result: increased dosing accuracy with the possibility of regulating the dose volume.

Description

The utility model relates to the field of water supply and sewerage, namely, to sanitary engineering, and can be used to dispense a specified amount of liquid cleaning agent into a toilet flush tank.

The internal surfaces of the toilet are constantly exposed to contamination during its operation. Flushing with water in most cases does not ensure complete removal of hard-to-wash residues and bacteria. Therefore, the use of active liquid cleaning agents to remove contaminants by dissolving, neutralizing, and destroying microorganisms with their subsequent removal is a guarantee of cleanliness and proper sanitary condition of the toilet.

Various methods of arranging dosing devices in a toilet are known from the state of the art. One effective method is to arrange the dosing device in the cavity of the toilet flush tank.

A flush tank cleaning agent dispenser is known, described in RU patent for invention No. 2395648. The device comprises: a dosing cavity, the volume (V) of which is close to the volume (V+v) of the substance to be dispensed, a first means for ensuring the connection of this cavity with a container for storing said substance, a second means for ensuring a controlled connection of this cavity with a toilet flushing device reservoir. Moreover, the pressure difference on the first means is at least five times greater than the pressure difference on the second means. In addition, the device comprises: a ventilation opening for ensuring the connection of the said cavity with the external environment, shut-off elements of the second means, controlled by a device that is installed in such a way that it floats on the surface of the water contained in the flushing device reservoir, and which is intended to close them during the standby phase of the toilet flushing device and to open them during the operation of the flushing device.

A dosing device is also known, as described in US Patent No. 2,726,406. The device comprises a storage container containing a disinfectant to be dosed and attached at its base to an outlet that can be closed by a valve attached to a float. Thus, in the first stage, when the flushing device is triggered, the water level in the tank decreases and becomes insufficient to raise the float so that the valve thereby closes the outlet from the storage container. Then - in the second stage - the water rises in the tank and raises the float, thus moving the valve from its seat and allowing the disinfectant to flow into the tank. And finally - in the third stage - the water level in the tank continues to rise so that - in accordance with the applicant's statements - when the water level reaches the valve, the water itself closes the flow of the substance. It is obvious that such a device also has the disadvantages observed in other mentioned devices known in this field of technology, namely - the amount of the supplied substance depends on the filling time of the flush tank.

The disadvantage of the above-described device designs is the inaccuracy of the supply and the lack of repeatability of the measuring of the cleaning agent with each operation of the flushing device.

In FR patent for invention No. 2808897, a dosing device is proposed, comprising a container for storing a cleaning agent, the lower part of which ends in a tubular element opening into a cavity, inside which a movable spherical shut-off element is mounted, attached to a float mounted in such a way that it floats on the surface of the water in the flushing device. Thus, when the reservoir of the latter is full, the float presses the spherical shut-off element against the base of the tubular element, thereby blocking the outlet of the cleaning agent. Conversely, when the flushing device is triggered, the water level in the reservoir of the flushing device decreases, as a result of which the spherical shut-off element allows the substance to flow into the cavity and closes the base of the latter in such a way that the said cavity is filled with a certain amount of cleaning agent. When the flushing device tank is filled, the float lifts the spherical shut-off element, thereby allowing the substance contained in the cavity inside the tank to flow out, and after a certain time, when the water level in the latter becomes sufficient, the spherical shut-off element closes the flow of the cleaning substance.

However, dosing in the device described above using one two-way valve does not provide the possibility of precise dosing due to the different speed of water rise in the flush tank for different consumers, as well as depending on the level of the substance in the tank of the dosing device: the higher the level, the greater the consumption.

The closest analogue to the claimed technical solution is the automatic dosing device described in ES patent for invention No. 1051175. The device comprises a detergent reservoir located in the upper part of the flush tank and a dosing device driven by a level mechanism. The dosing device consists of a casing protruding from the bottom of the tank, inside which there is an alternative piston between the upper and lower positions. The piston has a dosing hole connected to the reservoir and to the tank. The piston is connected to the float by means of a rod for its actuation during loading and unloading of the tank, while the rod is adjustable in length.

The disadvantage of the closest analogue is the opening of the dosing device during the draining of water and the detergent being immediately drawn into the drain undissolved, which does not ensure controlled consumption of the detergent without the ability to regulate its dosage volume.

The objective of the claimed utility model is to ensure dosing accuracy with the possibility of regulating the dose volume.

The essence of the claimed technical solution is that the automatic dosing device contains a container with a formed neck with a lid, a branch pipe and a T-shaped groove for fastening by means of a lever bracket; a dosing unit is installed in the branch pipe, fixed with a sealing ring, including a dosing chamber limited by inlet and outlet valves placed on a stud with bushings for changing its volume, wherein one arm of the lever is made with the possibility of controlling the valves of the dosing unit, and on the opposite other arm, unused bushings for changing the volume of the dosing chamber and a float with an opening, fixed with a conical retainer, are placed in series.

A technical solution is also claimed in which the lever is connected to the bracket by a pin.

In addition, a utility model is also claimed in which, along with the above-described features, recesses are formed in the container for its fastening.

The technical result of the claimed device is as follows.

The formation of a dosing chamber with the ability to change its volume by placing a pin with a sleeve or sleeves in it, depending on the required volume of liquid, allows for the precise determination and establishment of the dose volume.

In addition, the accuracy of dosing is ensured by the following design technique: one arm of the lever serves to control the valves of the dosing unit, and unused bushings for changing the volume of the dosing chamber can be placed on the other arm.

The utility model is explained with the help of Fig.1-3, which show:

Fig. 1 - general view of the proposed device,

Fig. 2,3 - general view of the proposed device in dynamics,

and positions 1-18 indicate:

1 - container,

2 - dosing unit,

3 - T-slot,

4 - bracket,

5 - lever,

6 - sealing ring,

7 - dosing chamber,

8 - inlet valve,

9 - exhaust valve,

10 - hairpin,

11 - bushings,

12 - float,

13 - hole,

14 - cone lock,

15 - finger,

16 - notches,

17 - crossbar,

18 - limiting flange,

19 - fork.

The automatic dosing device comprises a container 1 and a dosing unit 2. A neck with a lid, a branch pipe and a T-shaped groove 3 for fastening by means of a bracket 4 of a lever 5 are formed in the container 1. The dosing unit 2 is installed in the branch pipe and fixed by means of a sealing ring 6. The dosing unit 2 includes a dosing chamber 7 limited by an inlet 8 and an outlet 9 valves. The latter are placed on a stud 10 with bushings 11 for changing the volume of the dosing chamber 6. One arm of the lever 5 is designed with the possibility of controlling the valves 8 and 9 of the dosing unit 2. On the opposite other arm, unused bushings 11 for changing the volume of the dosing chamber 7 and a float 12 with an opening 13, which is fixed by a conical retainer 14, are placed in series. The lever 5 is connected to the bracket by means of a pin 15 with the possibility of free movement. In the container 1, recesses 16 are formed for its fastening on crossbars 17 in the spacer in the drain tank. The dosing unit 2 has a limiting flange 18 for a fixed position in the branch pipe of the container 1. At the end of the lever 5 opposite the bracket, a fork 19 is formed.

The claimed device operates as follows.

The automatic dosing device is placed in the toilet flush tank. Dosing is performed by means of cycles of raising and lowering the water level in the flush tank. At the moment of water rise, the outlet valve 9 opens with the help of the float 12 and the lever 5 and the liquid agent from the dosing chamber 7 of the dosing unit 2 enters the flush tank. At the same time, the inlet valve 8 closes the access of the liquid substance from the container 1 to the dosing chamber 7. Thus, in the flush tank completely filled with water, it is saturated with the substance. Then, at the moment of water level decrease in the flush tank, the inlet valve 8 opens and the outlet valve 9 closes simultaneously with the help of the float 12 and the lever 5 and the liquid substance from the container 1 fills the dosing chamber 7.

Using bushings 11, it is possible to change the volume of the dosing chamber 7, placing one or more inside it, depending on the required volume of liquid substance.

It is recommended to install container 1 approximately 1 cm higher than the maximum water level in the flush tank.

Example.

The prototype of the claimed device was successfully tested during tests for flush tanks of various types and designs. The developed automatic dosing device surpasses known analogues in its characteristics, since the results of testing confirmed an increase in dosing accuracy and a reduction in the consumption of liquid substance. In addition, the invention has a favorable life cycle cost, including due to simpler installation and the ability to adjust the volume of the dosing chamber depending on the tasks performed.

As a result of testing for the most convenient fastening of the claimed device and adding the substance to container 1 without removing the cover of the drain tank, manufacturers of ceramic sanitary ware are recommended to develop a single standard for additional holes on the rear wall with a diameter of 21 mm and 11 mm with an interaxial arrangement of 70-80 mm and on the opposite wall from the placed water supply fitting, at a distance from the upper edge - 40 mm.

Claims (3)

1. An automatic dosing device characterized in that it contains a container with a formed neck with a lid, a branch pipe and a T-shaped groove for fastening by means of a lever bracket; a dosing unit is installed in the branch pipe, fixed by means of a sealing ring, including a dosing chamber limited by inlet and outlet valves placed on a stud with bushings, wherein one arm of the lever is designed with the possibility of controlling the valves of the dosing unit, and on the opposite other arm a float with an opening is placed, fixed by a conical retainer. 2. An automatic dosing device according to item 1, characterized in that the lever is connected to the bracket by a pin. 3. An automatic dosing device according to item 1, characterized in that recesses are formed in the container for its fastening.