CN2275662Y - Float low-level siphon prevention water inlet valve - Google Patents

Abstract

The utility model discloses a float low-level siphon prevention water inlet valve. The inside of water inlet pipe of the main body of the utility model is provided with a non-return valve, and the bottom surface of an inner chamber in the center of the main body of the utility model is provided with a valve port; the upper end of the inner chamber is provided with an anti-siphon valve port, and an annular groove on the outer periphery of the inner chamber is provided with small holes communicated with the outside; the valve port on the bottom surface of the inner chamber and the anti-siphon valve port respectively correspond to a sealing pad and an anti-siphon pad which are on a valve rod; a float with a lower opening is arranged above a water inlet valve; a swing rod mechanism can be driven by the rise and fall of the float to control the opening and the closure of the water inlet valve, and the purpose that water is filled in a low water tank at a fixed quantity is realized. The water inlet valve of the utility model adopts a line contact flat pad type sealing and non-return valve double siphon prevention. The utility model has the advantages that the structure is simple, the sealing is reliable, the water level can be conveniently adjusted, etc.

Description

Floating-tube type low level anti-syphon valve inlet

The utility model relates to the inlet valve of low cistern for closet bowl accessory, particularly a kind of floating-tube type low level anti-syphon valve inlet device.

Existing low cistern for closet bowl low level anti-syphon valve inlet has two kinds of patterns: a kind of is the floatless formula.The inlet valve of this pattern is skillfully constructed, but complex structure, sealability instability, not durable in actual use.Another kind is a float-ball type.Though sealability is good, needs the user to dismantle pin voluntarily the adjustment water level is installed, and can only do limited adjustment, so the installation adjustment is very inconvenient according to the position, hole on the adjustable lever that connects ball float according to the height of water tank.More than the anti-siphon means of two kinds of inlet valves all realize by check valve is set in inlet valve.

The purpose of this utility model provides a kind of floating-tube type low level anti-syphon valve inlet device, and it is not only simple in structure, and sealability is reliable, and can regulate water level extremely easily according to the height of water tank.

This practicality newly is to realize like this.

A kind of floating-tube type low level anti-syphon valve inlet mainly is made up of main body, check valve, valve rod, support, fork, floating drum.

A, main body are cylindrical, and the screw thread of its lower end is connected with intake pipe, is provided with check valve in it, and bottom surface, wherein intracardiac chamber is provided with valve port, and the inner room upper end is anti-siphon valve port, and the inner room periphery is a circular groove, and aperture and exterior are arranged at this circular groove bottom;

B, valve rod are cylindrical, are positioned at the inlet valve center, and its lower end is embedded with round gasket, and anti-siphon pad is equipped with at the middle part, and top is provided with the rectangular osculum, described sealing gasket, anti-siphon pad respectively with the valve port of main body, anti-siphon valve port is corresponding;

C, support are loaded on the top of main body, there are ring limit separation seal pad and valve body end face to join, pushing down its ring limit with big nut is threaded with main body, there is circular hollow cavity the lower end of support, in its center hole valve rod is housed, its upper-end surface has the pipe joint of the connection inner chamber of biasing to be connected with water-adding pipe, and there is the guide rod of disjunctor the support upper end, and this lower end of the guide rod is provided with the fulcrum hole of hinged fork near the appropriate location at center;

D, fork are bending shape, and the one end has oblate spheroid shape driving lever head to put in the oblong shaped orifices on valve rod top, have pin-and-hole to be used for becoming the hinge shaft type hinged with the guide rod of support near the driving lever head, and fork end in addition has through hole to become to flexibly connect with pull bar;

E, floating drum are that the top is arranged at top, the inversion of lower openings is barrel-shaped, there are offset hole and guide rod cooperation and this fitting surface to allow floating drum to do and do not have moving of rotating relative to guide rod, the side-lower away from offset hole at floating drum is provided with hook, passes this hook with the U-shaped card pull bar and floating drum are fixed into height-adjustable the connection.

In preferred embodiment, described main body, valve rod, support, fork, floating drum are made of plastic.

The utility model has following actively useful effect:

1, sealability is reliable:

Be provided with the anti-siphon pad that a check valve and a rubber are manufactured in inlet valve, realize dual anti-siphon, can guarantee inlet valve under negative pressure state, the water in the water tank can not produce the refluence phenomenon.

2, simple in structure, install easy to adjust, can with the supporting use of any low cistern for closet bowl except that conventional one-piece toilet stool, to install adjusting without any specific (special) requirements.When the example structure that describes in detail below adopting, the number of part did not almost once add, and cost slightly reduces.

Describe structure of the present utility model and working principle in detail below in conjunction with accompanying drawing.

Fig. 1 is the longitudinal sectional drawing of the utility model concrete structure, and shown position is that inlet valve is closed.

With reference to Fig. 1, intake pipe 1 is threaded with main body 2, and the joint is provided with a check valve 3, and effect is to prevent under negative pressure state, and the water in the water tank produces through inlet valve and flows backwards and polluted source.The center of main body 2 is water inlet valve port 4, and the upper end is anti-siphon valve port 5, and the outer ring is a circular groove, and aperture and exterior are arranged at its bottom.Valve rod 6 is positioned at the inlet valve center, and the lower end is embedded with a rubber gasket 7, constitutes with water inlet valve port 4 to be tightly connected.The anti-siphon pad of manufacturing with rubber 8 is equipped with at the middle part of valve rod, and itself and anti-siphon valve port 5 are tightly connected, to strengthen the anti-siphon performance of inlet valve.One oblong shaped orifices is arranged at the top of valve rod 6, one end of fork 9 puts in this aperture, fork 9 is that the axle center can be done and swung up and down with the fulcrum, fulcrum 10 is located on the guide rod 12 that is made of one with support 11, also be provided with water-adding pipe 13 on the support 11, effect is under the inlet valve working state, benefit be needed water seal in the water closet.By the sealing that fixes of big cushion rubber 14, both are outside to fix with big locknut 15 between support 11 and the main body 2.Floating drum 16 is sleeved on the guide rod 12, be eccentric shape, being designed to eccentric purpose and being the arm of force of this end swing of being connected with floating drum 16 for the fork 9 that extends, with the power of closing of increase valve port 4, is to descend in working order and tank inner wall is collided and jam for fear of floating drum 16 on the other hand." U " shape flexible collar 17 that stainless steel is made is equipped with at the side-lower hook place of floating drum 16, and two holes and floating drum 16 that pull bar 18 passes on the flexible collar 17 are connected and fixed.Inwardly fashionable when the both wings that pinch " U " shape flexible collar 17 with hand, flexible collar 17 just can move freely on pull bar 18, thereby reaches the purpose of any adjusting floating drum position.

Needing water-filling in low cistern for closet bowl is that inlet valve valve port 4 is opened, and move on the valve rod 6 this moment, and floating drum 16 is a lowering position.Water enters low cistern from the circular groove and the bottom aperture of intake pipe 1 on check valve 3, valve port 4, anti-siphon valve port 5 and main body 2.When the water level in the low cistern raises gradually, the water surface that rises is sealed the opening of floating drum 16 belows, floating drum 16 promotes on the end that drives pull bar 18 and fork 9 along with the rising of the water surface and moves, with fulcrum 10 is the axle center, the other end of fork 9 is depressed valve rod 6 gradually, rise to certain position until the water surface, sealing gasket 7 is closed valve port under the effect of floating drum 16, pull bar 18, fork 9, valve rod 6.

The water inlet valve port of this device adopts is traditional through facts have proved the sealing of Simple and Reliable line contact plain cushion formula.Sealing gasket is universal for popularizing, even occur because the seepage phenomenon that ageing of rubber produces is changed sealing gasket and also is easy to, only with hand is twisted big locknut and got final product.

During enforcement, described intake pipe 1 is made of plastic with main body 2, also can make with corrosion resistant metal, and both also can be made of one.The valve body of check valve 3 is made with rubber, also can be made of plastic, and the valve body center is a through hole, and it is conical or plane ring shaped that valve port is, and valve body can be made into one, also can make assemblying body.The ball of check valve is a spheroidal, makes with plastics or other corrosion resistant metals, nonmetallic material.Valve port 4 on the main body 2 is ring with anti-siphon valve port 5, and the aperture of main body 2 bottoms can be done circular, semicircle, square or rectangular.

Described valve rod 6 is made of plastics, and also can manufacture with corrosion resistant metal, and sealing gasket 7 is a plane shape, and anti-siphon pad 8 is butterfly or plane shape, and both all manufacture with rubber.The oblong shaped orifices on valve rod top also can be done circular or square.

Described support 11 is made of plastics with guide rod 12, also can manufacture with metallic material, but but the two disalignment and split is manufactured fixing.The cross section of guide rod can be cross circle, square, rectangular or polygonal.

Describedly can make other arbitrary shapes at the condition lower pendulum bar 9 that satisfies fork 9 effect.Manufacturing material is plastics, also can manufacture with metallic material.It also can be spherical that fork is a compressed globular end.

Described floating drum 16 is made of plastics, that its cross section can be done is circular, square, rectangular, polygonal or other shapes, that the hole that cooperates with guide rod 12 can be done is circular, square, rectangular or polygonal, and " U " shape flexible collar 17 and pull bar 18 are all made with stainless steel or made with other corrosion resistant metals or nonmetallic material.

Described big locknut 15 usefulness plastics or metallic material are made.

Claims (2)

1, a kind of floating-tube type low level anti-syphon valve inlet mainly is made up of main body, check valve, valve rod, support, fork, floating drum, it is characterized in that:

A, main body are cylindrical, and the screw thread of its lower end is connected with intake pipe, is provided with check valve in it, and bottom surface, wherein intracardiac chamber is provided with valve port, and the inner room upper end is anti-siphon valve port, and the inner room periphery is a circular groove, and aperture and exterior are arranged at this circular groove bottom;

B, valve rod are cylindrical, are positioned at the inlet valve center, and its lower end is embedded with round gasket, and anti-siphon pad is equipped with at the middle part, and top is provided with the rectangular osculum, described sealing gasket, anti-siphon pad respectively with the valve port of main body, anti-siphon valve port is corresponding;

C, support are loaded on the top of main body, there are ring limit separation seal pad and valve body end face to join, pushing down its ring limit with big nut is threaded with main body, there is circular hollow cavity the lower end of support, in its center hole valve rod is housed, its upper-end surface has the pipe joint of the connection inner chamber of biasing to be connected with water-adding pipe, and there is the guide rod of disjunctor the support upper end, and this lower end of the guide rod is provided with the fulcrum hole of hinged fork near the appropriate location at center;

D, fork are bending shape, and the one end has oblate spheroid shape driving lever head to put in the oblong shaped orifices on valve rod top, have pin-and-hole to be used for becoming the hinge shaft type hinged with the guide rod of support near the driving lever head, and fork end in addition has through hole to become to flexibly connect with pull bar;

E, floating drum are that the top is arranged at top, the inversion of lower openings is barrel-shaped, there are offset hole and guide rod cooperation and this fitting surface to allow floating drum to do and do not have moving of rotating relative to guide rod, the side-lower away from offset hole at floating drum is provided with hook, passes this hook with the U-shaped card pull bar and floating drum are fixed into height-adjustable the connection.

2, floating-tube type low level anti-syphon valve inlet according to claim 1 is characterized in that: described main body, valve rod, support, fork, floating drum are made of plastic.