CN2251077Y

CN2251077Y - Cistern float-type automatic intake valve

Info

Publication number: CN2251077Y
Application number: CN 95221857
Authority: CN
Inventors: 梁以强
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-12
Filing date: 1995-09-12
Publication date: 1997-04-02
Anticipated expiration: 2005-09-12

Abstract

The utility model belongs to the technical field of a water valve, specifically, a float type automatic intake valve for the cooling water of an air conditioning system and a water tank (a high level water tank and a low level water tank) of a closet bowl. The utility model is the improvement of the existing float type water valve. The upper side of a valve plate seat 4 is provided with a valve plate and an elastic membrane 3 which are connected into a whole and are moved in an axial way in a valve body 1. The intake valve is divided into A, B, and C cavities by the elastic membrane 3, the valve plate, and the valve plate seat 4. The contact position between the valve plate and the B cavity is provided with a valve opening K. The valve plate seat 4 is provided with a small hole F which is communicated with the A cavity to the outer side of the valve body 1. The top end of a small hole G is covered by the valve plate. A rocker 7 and a rotating shaft 9 are formed into a movable fit. The utility model has the advantage that the leak of the valve is prevented, and the service life of the valve plate is extended.

Description

The float type automatic water inlet valve

The novel water valve technical field that belongs to of this reality is a kind of float type automatic water inlet valve that is used for air-conditioning system cooling tower and toilet tank for excrement pan (high flush tank and low cistern).

Present known this class inlet valve, though in structure, variant on outward appearance and the material therefor, their working principle is basic identical.It closes closed procedure is such: when water level was elevated to predetermined water level in the water tank, the buoyancy of float promoted the valve block seat and moves downward by the transmission of lever, makes the valve block face push down into water valve port, stops into water.Usually, the diameter of water inlet valve port is 8 millimeters, if pressure of supply water is 4 kg/cm, at this moment the total pressure at water inlet valve port place water is 2 kilograms.So when stopping into water,, just require valve block that enough big strength opposing intake pressure is arranged, compress into water valve port for avoiding valve leak.Pressure on the valve block is big more, and tight more just being not easy more that valve port is closed leaked.The approach that increases the valve block upward pressure has three.The first, strengthen float volume, to increase buoyancy, common float is that diameter is 9 centimetres a hollow sphere, and volume is 700 cubic centimetres, and water logging one half, the buoyancy of generation are 350 grams.The second, add long lever, common lever length is 20 centimetres.The 3rd, strengthen lever transmission ratio, common is 20: 1.According to these numerical calculation, effect is that the pressure on the valve block is 7 kilograms, stressedly on the balance pivot also is about 7 kilograms.Like this, lever system and valve block are stressed bigger, damage easily (particularly when valve is made of plastic, easier damage), and cause whole inlet valve inefficacy.And in the water inlet process, float floats along with the rising of water level, by the effect of lever, valve block just gradually push down into water valve port, flow of inlet water also reduces gradually.When valve will be closed, between valve block and the water inlet valve port gap is arranged, under the effect of high-pressure water flow, cause the valve block vibration easily.The valve block wearing and tearing have been accelerated in this vibration, make it to lose efficacy.Sometimes, the vibration of valve block can cause that also the water pipe system produces the noise of resonance.Moreover because float volume is big, lever is long, makes that the volume of whole inlet valve is bigger, is installed in the motion that hinders other parts (as the drain valve of tank for excrement pan) and inlet valve self parts in the water tank easily, and this also can cause the leakage of water tank.

Above-mentioned several reason has reduced the reliability and the working life of whole inlet valve.

The purpose of this utility model is to improve the float and the lever construction of existing float type automatic water inlet valve, reduces the pressure on the float volume increase valve port, and water is not to external leakage in the solution water tank.

Task of the present utility model is to realize by following skill scheme.The float type automatic water inlet valve is installed in the water tank 10, and increase also comprises elastic membrane 3, rocking arm 7, rotating shaft 9 structures in valve body 1, valve gap 2, valve block seat 4, valve block, float 8.Improving the back technical characterstic is: have main valve sheet and elastic membrane 3 to be connected as a single entity on the described valve block seat 4, can move axially in valve body 1; Elastic membrane 3, main valve sheet and valve block seat 4 are divided into A chamber, B chamber and C chamber with inlet valve; There is valve port K main valve sheet and contact position, B chamber; Have an aperture F to be communicated with the A chamber to valve body 1 outside at valve block seat 4, the top of aperture G is covered by the main valve sheet; Rocking bar 7 and rotating shaft 9 are movingly.Described main valve sheet comprises main valve sheet 5 and control valve block 6, and main valve sheet 5 and valve block seat 4, elastic membrane 3 are connected as a single entity; And inlet valve is divided into A, B, three chambeies of C; Intercommunicating pore G top on valve gap 2 is covered by control valve block 6.

Good effect of the present utility model is, and is rational in infrastructure.Therefore, valve is compared with old-fashioned valve, and is compact more small and exquisite, reliability and durability, is fit to produce by batch with engineering plastics.Can adjust the pressure on the valve port easily.Valve closing gets tightr, and more difficult leakage is rushed down, and has overcome the slow and vibration that causes of old-fashioned valve closing.Prolong the life-span of valve block and eliminated resonance noise.

Further specify skill content of the present utility model below in conjunction with accompanying drawing.

Fig. 1 is a structural principle schematic representation of the present utility model.See Fig. 1, improve back inlet valve structure of the present utility model.Its working procedure is as follows: when the drawdown in the water tank, float 8 descends, and rocking arm 7 counterclockwise direction are rotated, and open aperture G.Water in the A chamber is in small holes G flows into water tank.Like this, the hydraulic pressure in the A chamber reduces.High pressure water is pushed main valve sheet 5 open, current from the B chamber through water (flow) direction in the C chamber flows into water tank 10 as being with shown in the arrow fine line the figure.At this moment, water valve is in into water state, and along with current enter water tank, water level rises gradually in the water tank, float 8 come-ups, and rocking arm 7 clockwise directions rotate.When water level rose to the precalculated position, the controlled valve block 6 of aperture G was blocked.Water in the A chamber can not be again in aperture G flows into water tank.High pressure water in the B chamber flows into the A chamber through small holes F, makes the very fast rising of hydraulic pressure in the A chamber, and water pressure promotes elastic membrane 3, and valve block seat 4 and main valve sheet 5 move down, and the water inlet valve port K on main valve sheet 5 is pushed down the B chamber makes valve closing, stops to cistern water supply.This shows that the current of control aperture G just can be controlled the current of inlet valve.

Embodiment of the present utility model sees that the volume of Fig. 1 float 8 is 88 centimetres, is 13% of 700 cubic centimetres of old-fashioned float volume.Rocking bar 7 length that play leverage are 2 centimetres, are 10% of 20 centimetres of old-fashioned valve levers, and lever transmission ratio is 2.Like this, whole float 8 and lever 7 systems are compact very, makes whole inlet valve be suitable for the engineering plastics manufacturing more, produces by batch.The pressure of 5 pairs of main valve sheets water inlet valve port K comes down to the upper and lower pressure difference of elastic membrane 3.Like this, adjust the diameter in A chamber and B chamber, just can adjust the pressure on the valve port easily.In an embodiment, the diameter in A chamber is 2 centimetres, and the diameter in B chamber is 0.9 centimetre, if pressure of supply water is 4 kg/cm, calculating the pressure that acts on the valve port is 10 kilograms.Greater than 7 kilograms on the old-fashioned valve.When the controlled valve block 6 of aperture G was blocked, hydraulic pressure rose rapidly in the A chamber, just meaned that also valve closes very soon.In an embodiment, 0.005 square centimeter of being of the sectional area of aperture G, if pressure of supply water is similarly 4 kg/cm, then the water pressure on the G hole is 20 grams.Be that the valve port water pressure is one of percentage of 2 kilograms on the old-fashioned inlet valve.As seen new-type valve rod is that rocking arm 7 and float 8 can be done very for a short time.

Claims

1. a float type automatic water inlet valve is installed in the water tank (10), and increase also comprises elastic membrane (3), rocking arm (7), rotating shaft (9) structure in valve body (1), valve gap (2), valve block seat (4), valve block, float (8), it is characterized in that; There are main valve sheet and elastic membrane (3) to be connected as a single entity on the described valve block seat (4), in valve body (1), can move axially; Elastic membrane (3), main valve sheet and valve block seat (4) are divided into inlet valve in (A) chamber, (B) chamber reaches (C) chamber; Valve block and (B) contact position, chamber valve port (K) is arranged; Have an aperture (F) to be communicated with (A) chamber to valve body (1) outside at valve block seat (4), the top of aperture (G) is covered by the main valve sheet; Rocking bar (7) and rotating shaft (9) are movingly.

2. a kind of float type automatic water inlet valve according to claim 1 is characterized in that described main valve sheet comprises main valve sheet (5) and control valve block (6), and main valve sheet (5) and valve block seat (4), elastic membrane (3) are connected as a single entity; And inlet valve is divided into (A), (B), (C) three chambeies; Intercommunicating pore (G) top on valve gap (2) is covered by control valve block (6).

3. a kind of float type automatic water inlet valve according to claim 1, the rocking bar (7) that it is characterized in that described leverage and rotating shaft (9) movingly, its length is 2 centimetres.4. a kind of float type automatic water inlet valve according to claim 1 and 2, it is characterized in that describedly on valve block seat (4), having an aperture (F) to be communicated with (A) chamber to valve body (1) outside, the top of aperture (G) is covered by the main valve sheet, and the sectional area of aperture (G) is 0.006 square centimeter.

5. a kind of float type automatic water inlet valve according to claim 1 and 2, the diameter that it is characterized in that described A chamber is 2 centimetres, the diameter in B chamber is 0.9 centimetre.