RU2279513C1 - Shutoff device for lavatory pan flushing tank - Google Patents

Abstract

FIELD: sanitary equipment, particularly shutoff mechanisms for lavatory pans.

SUBSTANCE: shutoff device comprises body with perforated orifices made in lower body part, lid, neck and seat made in bottom part and adapted for annular discharge valve receiving, discharge valve and movable overflow pipe provided with retaining unit, which fixes the overflow pipe during discharge operation. The retaining unit is installed in neck and lid so that annular gaps are created in-between. Discharge valve is provided with orifices located out of neck closure zone, which permit water passage inside the body during flushing tank filling with water and is connected to compensating guiding bush along larger diameter thereof. The compensating guiding bush is installed inside the body and has height providing necessary clearance for water discharge from flushing tank into neck through above perforation body orifices. Dividing pipe is secured to inner lid surface and spaced from overflow pipe and from neck. The dividing pipe is provided with perforation orifices located in upper part thereof and is adapted to fill the body with water during flushing tank filling. Overflow pipe has annular extension to close the gap between lid and overflow pipe at the end of working overflow pipe travel. Overflow pipe also comprises valve, which closes gap between overflow pipe and dividing pipe after retaining unit activation during discharge operation.

EFFECT: increased efficiency of water usage due to optimized water discharge, increased structural simplicity.

1 dwg

Description

The present invention relates to the field of sanitary-hygienic devices, namely, to the locking mechanisms of the drainage tanks of the toilet.

Currently, in the development of new locking devices for drain tanks, simplicity of design and manufacture, reliability of operation, and ease of operation are of great importance. a full range of requirements for a modern device.

Known locking mechanisms of the cistern-type drain tanks (1) are very simple in design, manufacturing and operation.

The disadvantages of this type of locking mechanisms are the need to hold the drive lever during the descent of water and strong unwanted noise during the operation of the mechanism.

Known locking mechanisms of the drain tanks (2), having a simple structure, technologically advanced to manufacture, using the principle of the bellows and not requiring holding the drive lever when draining the water.

The disadvantage of this type of locking mechanisms is the instability of their operation during operation, associated with the instability of the bellows due to changes in external pressure, for example, when the weather changes and in high altitude conditions.

Known locking mechanisms (3) with valve mechanisms for delaying the lowering of the cuff, having a soft and small stroke of the drive, are quite simple in structure.

The disadvantages of this kind of locking mechanisms are the inability to adjust the portion of the drained water and the instability of the cuff lowering delay time.

Known more complex locking mechanisms (4), which have adjustments for the amount of water discharged, are technologically advanced to manufacture, do not respond to changes in weather conditions and range of use.

The disadvantage of this type of locking mechanisms is their sensitivity to water quality, with rusty, mechanically contaminated water, such locking devices disable and require repair.

Known locking mechanisms (5) with lever float delay mechanisms lowering the cuff mounted on the overflow pipe, are quite simple in design and well-proven in operation.

A known locking device for a toilet flush cistern comprises a housing with perforations, a lid, a neck and a saddle in the bottom for an annular drain valve, a drain valve and a movable overflow tube with a holding unit during discharge, mounted with annular gaps in the neck and cover.

The disadvantage of this type of shutter mechanisms is the non-optimal process of draining the water due to the sharp opening of the channels of the water drain at the beginning of the drain.

This design of the locking mechanism is taken by the author as the closest analogue to the proposed device as the closest in technical essence and the achieved effect when used.

The task that the author posed when developing the proposed design of the locking mechanism for the drain tank is to increase the efficiency of water use by optimizing the process of draining the water without significantly complicating the device.

This problem is solved in that in the locking device for the toilet flush cistern, comprising a housing with perforations, a lid, a neck and a saddle in the bottom for an annular drain valve, a drain valve and a movable overflow pipe with its holding unit during the discharge, installed with ring the gaps in the neck and lid according to the invention, said perforations are made in the lower part of the body, said drain valve outside the neck overlap area is provided with holes for passing water into the body when filling the toilet bowl with water and fastened over a large diameter with a compression guide sleeve installed inside the housing with a height that provides the necessary clearance for draining water from the toilet bowl into the neck through the indicated perforation holes of the housing; on the inside of the cover with an annular gap to the overflow pipe and neckline, a separator is fixed a tube with perforations in its upper part to fill the casing with water when the toilet bowl is filled with water, and the overflow tube is provided with an annular protrusion mentioned for closing the gap between the cover and the overflow pipe at the end of the working movement of the overflow pipe and the valve for closing the gap between the overflow pipe and the separation tube after the overflow tube holding unit has been actuated during discharge.

Thus, the locking device for the toilet flush tank contains:

- perforated in the lower part of the housing with a neck and a saddle in the bottom for an annular drain valve and a cover with an opening for placing an overflow tube with a gap for filling the housing with water,

- a drain valve, fastened over a large diameter with a compression guide sleeve installed in the housing with a height that provides the necessary clearance for draining water from the tank into the neck through perforations in the body, and provided with holes for passing water into the body when filling the tank with water outside the neck overlap ,

- a movable overflow tube installed with annular gaps in the neck and cover of the casing, with an annular protrusion to close the gap between the casing cover and overflow tube at the end of the working movement of the overflow tube and the valve to close the gap between the overflow tube and the separation tube after the overflow tube holding unit has been actuated when plum;

- node holding the overflow tube during the discharge in the form of a two-shouldered lever with a float,

- a separation tube fixed on the inside of the lid with an annular gap to the overflow tube and neck, perforated in its upper part to fill the housing with water when filling the tank with water.

Significantly new features of the proposed design are:

- installation on the inside of the lid with an annular gap to the overflow tube and the neck of the separation tube, perforated in the upper part to fill the housing with water when filling the tank with water,

- fastening a large diameter drain valve to the compression guide sleeve, with a height that provides the necessary clearance for draining water from the tank to the neck through perforations in the body and supplying this valve outside the neck overlap with openings for passing water into the body when filling the tank with water,

- supplying the overflow tube with an annular protrusion to close the gap between the housing cover and the overflow tube at the end of the working movement of the overflow tube and the gap closing valve between the overflow tube and the separation tube after the overflow tube holding unit has been triggered during discharge.

The above differences are significant, and the combination of features meets the inventive step, because in the shut-off unit, not direct sheltering of the drain valve is organized as in devices of this kind, but due to the organization of an adjustable vacuum lift of the drain valve and, accordingly, the flow of water into the drain neck from the tank.

The proposed device design is presented in the attached drawing.

The device comprises a housing 1 with a neck 2 for fixing in the drain hole of the tank 3, a seat 4 of the drain valve 5. In the lower part of the housing 1, holes 21 are made for passing water from the tank into the neck 2 with a bent drain valve 5.

On top of the housing is closed by a cover 6 with a hole 7, which ensures the placement of overflow tube 8.

The drain valve 5 is fixed with a large diameter on the compression guide sleeve 9 installed inside the housing 1, the height of which is taken from the condition of providing the necessary clearance between the raised valve 5 and the seat 4 for draining water from the tank 3 into the neck 2 through the perforations 21 in the housing 1.

In addition, in the drain valve 5, outside the neck overlap zone, openings 19 are made for passing water into the body when filling the tank 3 with water.

The overflow tube 8 is installed with annular gaps in the neck 2 and in the hole 7 of the cover 6 and is equipped with a tube holding unit during discharge, made in the form of a protrusion 10 on the overflow tube 8 and a two-shouldered lever 11, one end 18 interacting with the protrusion 10 during the working stroke of the tube; and on the other having a float 12.

The overflow tube 8 is provided with an annular protrusion 13 for closing the annular gap between it and the cover 6 at the end of the working movement of the overflow tube 8 and the valve 14 for closing the gap between the overflow tube 8 and the separation tube 15 after the overflow tube holding unit 8 is triggered during discharge.

The separation tube 15 is fixed on the inner part of the cover 6 with an annular gap to the overflow tube 8 and the neck 2 and is perforated, with holes 16 in its upper part to fill the housing 1 with water when filling the tank 3 and is equipped with a seat 17 for the valve 14 installed, for example, at the lower end of the overflow tube 8 when using the overpressure drive of the overflow tube 8 with a spring-loaded button 20.

The operation of the proposed locking device is as follows.

The position of the parts and components of the locking mechanism with the tank 3 filled with water is as follows.

The drain valve 5 closes the annular gap in the neck 2 for draining water.

The gap between the cover 6 and the overflow tube 8 is open, and water through the holes 16 fills the internal cavity of the housing 1.

The valve 14 is pressed against the seat 17, the gap between the separation tube 15 and the overflow pipe 8 is closed and water cannot enter the neck 2.

The contact end of the two shoulders of the lever 11 is located on the protrusion 10 of the overflow tube 8.

The float 12 at the other end of the lever presses its contact end with an effort to push the float.

After applying a working force to the overflow pipe 8, for example, when it is lowered down after pressing the spring-loaded start button 20, the annular protrusion 13 overlaps the annular gap between the cover 6 of the housing 1 and the overflow tube 8, blocking the flow of water into the housing 1 from the tank.

The valve 14 overlap the annular gap between the overflow tube 8 and the separation tube 15, and water begins to flow from the inner cavity of the housing into the neck 2.

The protrusion 10 of the overflow tube falls down, and the contacting end 18 of the two shoulders of the lever 11 is pressed against the drain pipe 8 by the force of the float 12, preventing it from rising after removing the working force.

Due to the pressure difference between the top and bottom of the drain valve 5 (through the holes M the column of water in the tank presses on the valve below), the latter, together with the guide sleeve 9, rises up, opening the annular gap in the neck 2, and water from the tank 3 enters the neck 2 .

As the water drains, the force of the float 12 weakens, the two-arm lever 11 rotates on its axis, and its end 18 is pulled out from under the protrusion 10 and, under the influence of the spring-loaded release button 20, the overflow tube 8 takes its initial position.

When lifting the overflow tube 8, the protrusion 13 also rises and allows water to enter the housing 1 through an annular gap between the overflow tube and the housing cover 6.

The air from the inner cavity of the housing 1 is displaced by water flowing through the holes 19 in the drain valve 5.

The valve 14 closes the annular gap between the drain pipe 8 and the separation tube 15, and water fills the cavity above the drain valve 5.

The pressure under the valve and above the valve is first equalized, and then, when the pressure from above becomes higher, valve 5 closes the seat 4.

Water again fills the drain tank 3 and the cycle can be repeated.

The author made and tested with positive results a prototype of the proposed locking mechanism.

Currently, work is underway on its industrial implementation.

Literature

1. RF patent No. 2090708 of 09/20/1997, IPC E 03 D 1/34.

2. RF patent No. 2116408 of July 27, 1998, IPC E 03 D 1/30.

3. RF patent No. 2180031 of 02.27.2002, IPC E 03 D 1/34.

4. RF patent No. 2180064 of 02.27.2002, IPC E 03 D 1/34.

5. RF patent No. 2158336 dated 10.27.2000, IPC E 03 D 1/34.

Claims (1)

A locking device for a toilet flush cistern comprising a housing with perforations, a lid, a neck and a saddle in the bottom for an annular drain valve, a drain valve, a movable overflow tube with a holding unit during discharge, installed with annular gaps in the neck and lid, characterized the fact that these perforations are made in the lower part of the housing, the specified drain valve outside the neck overlap area is provided with holes for passing water into the housing when filling the toilet water tank d and fastened over a large diameter with a compression guide sleeve installed inside the housing with a height that provides the necessary clearance for draining water from the toilet bowl into the neck through the indicated perforation holes of the housing, on the inside of the lid with an annular gap to the overflow pipe and the neck, a separation tube with perforations is fixed holes in its upper part to fill the casing with water when filling the toilet bowl with water, and the overflow pipe is equipped with an annular protrusion to close the gap I am waiting for the lid and overflow pipe at the end of the working movement of the overflow pipe and the valve to close the gap between the overflow pipe and the separation tube after the overflow pipe holding unit has been actuated during the overflow.