Drain valve

FIELD: mechanical engineering; liquid materials handling facilities.

SUBSTANCE: proposed drain valve has seat secured in reservoir bottom and cup with lid provided with central hole. Overflow unit and shutoff member lifting mechanism are provided. Cup is secured on seat. Overflow unit is made in form of two coaxially arranged inner and outer tubes. Inner tube is installed for axial displacement and fixing relative to outer tube. Float is secured on outer tube from side of its outer surface. Shutoff member is installed on lower end of outer tube. Outer tube is installed for axial displacement and is passed through central hole in cup lid. Float is arranged inside cup. Shutoff member lifting mechanism is made in form of hinge unit connected by tie-rod with overflow unit and mechanically coupled with pushbutton. Pushbutton is installed in reservoir cover by means of thrust bushing. Cup is secured on seat by bayonet joint. Two seats are made on cup lid. Post is secured in each seat. Adjusting bushing is secured on posts. Said bushing is connected by threaded joint with thrust bushing of pushbutton. Rim is secured on adjusting bushing. Hinge support is made on rim. Position of inner tube of overflow unit is fixed relative to outer tube of overflow unit by means of union nut and sealing gasket. Said gasket is clamped by union nut between tube of overflow unit. Hinge unit is made in form of lever. Rotary axle is installed in middle part of lever in hinge support. One end of lever thrust against base of rod. Rod is connected with pushbutton spring-loaded relative to thrust bushing. Other end of lever is connected with upper end of tie-rod. Said tie-rod is connected with -shaped lever from side of its lower end. Said lever is rigidly secured on bracket. The latter is made on outer tube of overflow unit higher than cup.

EFFECT: improved reliability of drain valve owing to simplified design and provision of coaxial arrangement of pushbutton of hinge unit drive and overflow unit.

1 dwg

 

The invention relates to drain valves to drain connection of the capacity of different types of fluids, including for draining water from the flush tank from the top starting with different height, used for flushing toilets installed in the lavatories of buildings for various purposes.

Known the drain valve, which merges the specified amount of water in the inlet opening of the cumulative camera, locking element which is controlled by the float opens when filled with water accumulating chamber and the location of the float in the cell at the specified level. To the intake opening connected tube extending down into the collection chamber to the outlet. The locking element associated with the float moves together with him on the feed tube. In the closed position of the locking element, the lower edge of its body when not filled with water accumulating chamber adjacent to the valve seat surrounding the outlet, or is located near this saddle. In the open position of the valve when filling with water cumulative camera case closure element is lifted by the float and is located above the saddle (patent US 4601071, 22.07.1986).

However, this drain valve is too bulky and has a complex design.

Closest to the invention in tehnichecheskomu and the achieved result is the drain valve, containing the saddle, mounted in the bottom of the tank, a glass lid, which made the Central hole, the site of the overflow and the lifting mechanism of the locking element, with the glass attached to the saddle node of the overflow consists of two coaxially arranged inner and outer pipes and the inner pipe is installed with the possibility of axial movement and fixing of its position relative to the outer tube, the outer tube from its outer surface strengthened float and at the lower end of the outer pipe is installed shut-off element, the outer pipe is placed with the possibility of axial movement and skipped through the Central opening in the cover glass, the float is inside the jar, and the lifting mechanism of the locking element is designed as a hinged node connected by a rod with node overflow and kinematically associated with the button installed in the top of the silo through a thrust bearing (patent RU 2158336, 27.10.2000).

This valve enables its installation in containers of various heights. However, reliability is not high enough, that is because the design of the hinge mechanism is quite complex and includes two arm and two rigid suspension. It also requires the alignment of the location of the holes in the lid of the tank and drain holes in aniseikonia, it is not always feasible.

Task to be solved by the present invention is directed, is to increase the reliability of the drain valve, by simplifying its design and provide axial location of the button actuator in exoskeleton and a host of overflow.

The mentioned technical problem is solved due to the fact that the drain valve includes a seat attached to the bottom of the tank, a glass lid, which made the Central hole, the site of the overflow and the lifting mechanism of the locking element, with the glass attached to the saddle node of the overflow consists of two coaxially arranged inner and outer pipes and the inner pipe is installed with the possibility of axial movement and fixing of its position relative to the outer tube, the outer tube from its outer surface strengthened float and at the lower end of the outer pipe is installed shut-off element, the outer pipe is placed with the possibility of axial movement and skipped through the Central opening in the cover glass, the float is located inside of the Cup and the lifting mechanism of the locking element is designed as a hinged node connected by a rod with node overflow and kinematically associated with the button installed in the top of the silo through a thrust bearing, with the glass attached to the saddle through the m bayonet connection, on the cover glass made two nests, each of which has a rack, and the rack is fixed in the adjusting sleeve, which is connected by threaded connection with thrust sleeve buttons on the adjusting sleeve fixed rim, a pivot point, the position of the inner tube site outage is fixed relative to the outer tube site overflow through the Union nut and gasket sandwiched coupling nut between the pipes site outage, and the hinge unit is designed in the form of a lever, in the middle part of which is made mounted in pivoting bearing pivoting axis, one end of the lever rests against the base of the stem, which is connected with spring-loaded relative to the thrust bearing button, and the other end of the lever is connected with the upper end of the thrust, which from its lower end connected with-shaped lever rigidly mounted on the bracket, made on the outer tube site overflow above the glass.

Analysis of various drain valves showed that one of the main requirements is the reliability and versatility of their use. Performing on the trumpet node overflow bracket is rigidly attached to it with-shaped lever allows us to dramatically simplify the design, the Yu exoskeleton, which contains only one arm. At the same time it is possible to easily adjust the length of the rod that enables you to install the drain valve in containers of different heights, almost without alteration of the drain valve. Setting the glass on the valve seat by means of a bayonet connection allows you to easily assemble and disassemble the drain valve without using a special tool that dramatically reduces operating costs and allows you to quickly assemble the drain valve if installed in a vessel, for example in the waste-holding tank of the toilet, and in the process of operation to quickly clean the valve or replace the damaged valve components. Install the pivot point and the buttons on the racks, which are fixed on the lid of the glass allows you to collect coaxial design that avoids distortions when lifting the locking element. Using the Union nut and gasket for fixing the position of the tubes node overflow relative to each other tightly and allows to quickly connect the pipes.

Thus, achieved the goals set forth in the invention technical problem - improving the reliability of the drain valve.

The drawing shows a longitudinal section of the drain valve.

The drain valve includes a seat 1, is fixed in the base plate 2 to the expansion of the tee, the Cup 3 with the cover 4, in which the Central hole, the site of the overflow 5 and the lifting mechanism of the locking element 25. The Cup 3 is fixed to the seat 1. Site outage 5 made in the form of two coaxially arranged inner 6 and outer 7 pipe and the inner pipe 6 is installed with the possibility of axial movement and fixing of its position relative to the outer tube 7. The outer tube 7 by the outer surface of the strengthened float 8 and at the lower end of the outer pipe 7 is installed shut-off element 25. Outer tube 7 is placed with the possibility of axial movement and skipped through the Central hole in the lid 4 of the Cup 3. The float 8 is located inside the Cup 3. The lifting mechanism of the locking element 25 is made in the form of a hinged node connected through a thrust 9 node overflow 5 and kinematically associated with the button 10 installed in the lid 11 of the container through a thrust bearing 12. The Cup 3 is fixed to the seat 1 by means of bayonet connections 26. On the lid 4 cups 3 are two diametrically oppositely arranged slots 13, each of which has a front 14, and on the racks 14 are fixed in the adjusting sleeve 15, which is connected by threaded connection with the thrust sleeve 12 of the button 10. On the adjusting sleeve 15 secured to the rim 16 which is hinged support 1. The position of the inner tube 6 node overflow 5 is fixed relative to the outer tube 7 node overflow 5 by means of nut 18 and the gasket 19, sandwiched coupling nut 18 between the pipes 6 and 7 node overflow 5. Hinge is made in the form of a lever 20, in the middle part of which is made installed in the hinge support 17 and the rotary shaft 21. One end of the lever 20 rests on the base of the stem 22, which is connected with a spring-loaded relative to the thrust bearing 12 of the button 10 and the other end of the lever 20 is connected with the upper end of the thrust 9, which from its lower end connected with-shaped arm 23 rigidly mounted on the bracket 24, is made on the outer pipe 7 node overflow 5 above Cup 3.

The drain valve operates as follows.

In the initial position, the locking element 25 overlaps the saddle 1, blocking it. Pressing the button 10, it moves down, moves down the rod 22. The cylinder rod 22 pushes against the lever 20. As a result of rotation of the lever 20 moves upward thrust 9, which through the lever 23 passes upward movement of the outer pipe 7 node overflow 5, which causes the moving up of the locking element 25. Lifting the locking element 25 leads up to the opening of the seat 1, and a drain from the tank into the liquid medium. The float 8 is held in the top laid and pipe 7 and 6 with a locking element 25 after as you release the button 10, the pressing of which led to the opening of the drain valve. After reduction of the level of liquid medium in the vessel below the level of the float 8 begins retrograde motion of the outer tube 7 node overflow down to 5 until the locking element 25 will not fall on the saddle 1. The drain valve automatically returns to its original closed position.

The present invention can be used wherever you want to automatically maintain a vessel predetermined level of liquid medium.

The drain valve containing the saddle, mounted in the bottom of the tank, a glass lid, which made the Central hole, the site of the overflow and the lifting mechanism of the locking element, with the glass attached to the saddle node of the overflow consists of two coaxially arranged inner and outer pipes and the inner pipe is installed with the possibility of axial movement and fixing of its position relative to the outer tube, the outer tube from its outer surface strengthened float and at the lower end of the outer pipe is installed shut-off element, the outer pipe is placed with the possibility of axial movement and skipped through the Central hole in the lid of the glass the float is located inside of the Cup and the lifting mechanism of the locking element is designed as a ball of the IRNA node, United by a thrust with the node overflow and kinematically associated with the button installed in the top of the silo through a thrust bearing, characterized in that the glass is attached to the saddle by means of a bayonet connection, the cover glass is made of two nests, each of which has a rack, and the rack is fixed in the adjusting sleeve, which is connected by threaded connection with thrust sleeve buttons on the adjusting sleeve fixed rim, a pivot point, the position of the inner tube site outage is fixed relative to the outer tube site overflow through the Union nut and gasket sandwiched coupling nut between the pipes node overflow and the hinge is made in the form of a lever, in the middle part of which is made mounted in pivoting bearing pivoting axis, one end of the lever rests against the base of the stem, which is connected with a spring-loaded relative to the thrust bearing button, and the other end of the lever is connected with the upper end of the thrust, which from its lower end connected with-shaped lever rigidly mounted on the bracket, made on the outer tube site overflow above the glass.



 

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FIELD: mechanical engineering; liquid materials handling facilities.

SUBSTANCE: proposed drain valve has seat secured in reservoir bottom and cup with lid provided with central hole. Overflow unit and shutoff member lifting mechanism are provided. Cup is secured on seat. Overflow unit is made in form of two coaxially arranged inner and outer tubes. Inner tube is installed for axial displacement and fixing relative to outer tube. Float is secured on outer tube from side of its outer surface. Shutoff member is installed on lower end of outer tube. Outer tube is installed for axial displacement and is passed through central hole in cup lid. Float is arranged inside cup. Shutoff member lifting mechanism is made in form of hinge unit connected by tie-rod with overflow unit and mechanically coupled with pushbutton. Pushbutton is installed in reservoir cover by means of thrust bushing. Cup is secured on seat by bayonet joint. Two seats are made on cup lid. Post is secured in each seat. Adjusting bushing is secured on posts. Said bushing is connected by threaded joint with thrust bushing of pushbutton. Rim is secured on adjusting bushing. Hinge support is made on rim. Position of inner tube of overflow unit is fixed relative to outer tube of overflow unit by means of union nut and sealing gasket. Said gasket is clamped by union nut between tube of overflow unit. Hinge unit is made in form of lever. Rotary axle is installed in middle part of lever in hinge support. One end of lever thrust against base of rod. Rod is connected with pushbutton spring-loaded relative to thrust bushing. Other end of lever is connected with upper end of tie-rod. Said tie-rod is connected with -shaped lever from side of its lower end. Said lever is rigidly secured on bracket. The latter is made on outer tube of overflow unit higher than cup.

EFFECT: improved reliability of drain valve owing to simplified design and provision of coaxial arrangement of pushbutton of hinge unit drive and overflow unit.

1 dwg

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