CN2479301Y

CN2479301Y - Float valve

Info

Publication number: CN2479301Y
Application number: CN 01238758
Authority: CN
Inventors: 戚晖
Original assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Current assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Priority date: 2001-04-06
Filing date: 2001-04-06
Publication date: 2002-02-27
Anticipated expiration: 2011-04-06

Abstract

The utility model discloses a valve with a floating ball for automatic water level control of water tanks, comprising a valve body, a plunger, a sealing ring, a spring seat, a rear seat, a spring, a small housing case, a bent plate, a small ramming piston, a sealing piece and the like. The sealing ring is equipped at the start-and-close main delivery orifice provided at the plunger end and is located and pressed tightly by a pressing cover. The spring seat is in seal connection with the plunger. The rear cover is pressed tightly by a connecting cap. The spring is equipped between the spring seat and the rear cover. The small housing case is connected with the rear cover, and the bent plate is connected with the floating ball. The utility model has the advantages of simple and compact structure, low manufacturing cost, good working stability and low start-and-close pressure. The closing force is enhanced, thereby the safety is increased.

Description

Float valve

The utility model relates to the water level float valve of control automatically.

Automatic control has been quite common technology to float valve as cistern water level, especially control automatically as the roof tank water level, the floating ball valve structure more complicated of prior art is utilized structures such as three-jaw guiding, filtering screen, because part is many, the machining difficulty is big, manufacture cost is increased, because complex structure, piston stroke is long, minimum cracking pressure is increased, close the power deficiency.

The purpose of this utility model is to provide a kind of simplified structure, reduces cost, and reduces cracking pressure, improves the float valve of the power of closing.

According to above-mentioned purpose, the utility model is achieved through the following technical solutions: float valve, comprise the valve body that has water intake and main osculum, the spring seat that is provided with piston in the valve body and is tightly connected with it, ostium excurrens is arranged on the spring seat, connecing the bonnet that has through hole that cap is connected valve end and will be located at the end compresses, form the active chamber of area greater than the valve inleting water mouth, be provided with spring between spring seat and the bonnet, the small shell that has the auxiliary waterexit hole is connected on the bonnet, be provided with the small plunger of setting-in diaphragm seal in the small shell, bent plate one end that is hinged on the small shell connects ball float, one end promotes the small plunger displacement and opens and closes the auxiliary waterexit hole, it is characterized in that described pistons end is provided with the seal ring with the contact seal of valve inleting water mouth, locate with the gland that compresses seal ring to be connected that gland is provided with a plurality of apertures with piston.

Float valve after the improvement replaces parts such as three-jaw guiding, filtering screen with gland, the improvement of main osculum sectional shape and the direction plan of establishment, make designs simplification and compactness, reduce part and reduce cost, shorten piston stroke, improve working stability, thereby reduce minimum cracking pressure, the power of closing increases by 30% on the original basis, guarantees safe handling.

Description of drawings.

Fig. 1 is the utility model structural representation.

Fig. 2 is the A-A sectional view of Fig. 1.

In conjunction with above-mentioned accompanying drawing the utility model is described in detail again.

Referring to Fig. 1-2, float valve comprises the valve body (1) that is spirally connected with intake pipe, valve body has a water intake (2) and main osculum (23), both sectional areas equate, axis is perpendicular, main osculum sectional shape is rectangle, and its long side direction is vertical with valve axis, has so both guaranteed the water-in and water-out balance, piston stroke is reduced, make compact structure, improve working stability.

Body cavity is provided with tubular piston (6), piston is provided with the seal ring (3) with the contact seal of valve inleting water mouth in water intake one end end, the sealing circle is connected with the pistons end seam, the location is spirally connected with gland (4) that compresses seal ring and piston, and a plurality of apertures (24) on the gland Transverse plane have replaced the filtration foreign material effect of filtering screen.Valve body is provided with the retaining mud collar (5) that is inlaid in the main body inside groove between main osculum position and piston simultaneously, enters active chamber to block dirt.

The other end of piston (6) is bolted with spring seat (7), and both junction planes are provided with bowl ring (8), and spring seat is provided with ostium excurrens (22).Connect that cap (9) and valve end are spirally connected and the bonnet that has through hole (19) (11) that will be located at the end compresses, install seal ring (10) on the seal face additional, make and spring seat between form the active chamber (21) of area much larger than the valve inleting water open area, simultaneously between spring seat and bonnet, be provided with spring (20), guarantee to be lower than 0.2kg/cm in water pressure ²Situation under main osculum be in closed condition all the time, avoid the water tank spill and leakage.

The small shell (17) that has auxiliary waterexit hole (18) is screwed onto on the bonnet, be provided with the small plunger (14) that is embedded with diaphragm seal (12) in the small shell, bent plate (13) one ends that are hinged on the small shell by pin are connected with ball float (16) by lever (15), and the shelves of opening that an end stretches into small plunger promote the keying that the small plunger displacement realizes the auxiliary waterexit hole.

The utility model is when water level is low, ball float falls, bent plate promotion small plunger moves to right when falling, drive diaphragm seal and break away from bonnet, low amounts of water is gone out by the auxiliary waterexit orifice flow through the bonnet through hole in the active chamber, and active chamber pressure is reduced, under the pipeline effect of water pressure, piston moves right, and at this moment seal ring separates with the valve inleting water mouth, the water outlet that just is opened of main osculum.When water level rises to certain altitude, ball float also rises thereupon, make small plunger and diaphragm seal and bonnet contact seal, this moment, the active chamber internal pressure increased suddenly, because the active chamber area is much larger than the valve inleting water open area, so piston just is moved to the left, and makes seal ring and the contact seal of valve inleting water mouth, main osculum is closed, and plays water level and controls automatically.

Claims

1. float valve, comprise the valve body (1) that has water intake (2) and main osculum (23), the spring seat (7) that is provided with piston (6) in the valve body and is tightly connected with it, ostium excurrens (22) is arranged on the spring seat, connecing the bonnet that has through hole (19) (11) that cap (9) is connected valve end and will be located at the end compresses, form the active chamber (21) of area greater than the valve inleting water mouth, be provided with spring (20) between spring seat and the bonnet, the small shell (17) that has auxiliary waterexit hole (18) is connected on the bonnet, be provided with the small plunger (14) of setting-in diaphragm seal (12) in the small shell, bent plate (13) one ends that are hinged on the small shell connect ball float (16), one end promotes the small plunger displacement and opens and closes the auxiliary waterexit hole, it is characterized in that described pistons end is provided with the seal ring (3) with the contact seal of valve inleting water mouth, the location is connected with piston with the gland that compresses seal ring (4), and gland is provided with a plurality of apertures (24).

2. float valve as claimed in claim 1 is characterized in that described water intake (2) equates with main osculum (23) sectional area.

3. float valve as claimed in claim 1 or 2 is characterized in that described main osculum (23) sectional shape is rectangle, and its long side direction and valve body (1) axis normal.

4. float valve as claimed in claim 1 is characterized in that described valve body (1) is provided with the retaining mud collar (5) that is inlaid in the valve body between main osculum position and piston.

5. float valve as claimed in claim 1 is characterized in that being provided with interconnective lever (15) between described bent plate (13) and the ball float (16).