CN201382198Y

CN201382198Y - Piston-type hydraulic-control ball cock

Info

Publication number: CN201382198Y
Application number: CN200820054006U
Authority: CN
Inventors: 张磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-07
Filing date: 2008-08-07
Publication date: 2010-01-13
Anticipated expiration: 2018-08-07

Abstract

A piston-type hydraulic-control ball cock mainly comprises a valve water inlet seat (1), a valve seat (2) and a piston (3). The circumferential side surface of the piston (3) fits with a herringbone sealing piece (4) installed on the valve seat (2) in a sliding manner; an intercepter plate (7) is positioned at the upper part of the piston (3), and a guide rod (5) is positioned at the lower part of the piston (3); the guide rod (5), the intercepter plate (7) and the piston (3) are connected to form a whole body; a gap is formed between the guide rod (5) and a guiding piston rod sleeve (6); the intercepter plate (7) positioned at the upper part of the piston (3) fits with a pipe wall hole (8) formed on the valve water inlet seat (1) so as to form an intercepting port; and a control chamber (9) is connected and communicated with a work chamber (11) by a laying pipe (12) through a connector (10) and a ball cock (13). Under the circumstance that opening and closing pressure of the valve is relieved, the piston-type hydraulic control ball cock has the advantages of valve structure simplification, flexible valve opening and closing, good leak tightness, no leakage, and reliable operation; and the exchangeability of components is strong, so that the maintenance is very convenient.

Description

Piston-type hydro pressure-controlled float valve

Technical field:

The utility model relates to a kind of float valve, particularly piston-type hydro pressure-controlled float valve.

Background technique:

The float valve that is installed in pipe water outlet be divided into two kinds a kind of be directly to rely on buoyancy of liquid to carry out pipeline to dam, referring to accompanying drawing 2.When the water in the pond increases to ball float (1), ball float (1) upwards floats under buoyancy function, piston (2) moves forward under the prizing of lever (3), when the buoyancy of ball float (1) is mentioned power that lever (3) prizes piston (2) greater than the ductwork pressure of water inlet (4), the press water of pipe network is blocked up by piston (2), makes that the water in the pipe network no longer reaches the purpose of damming in water outlet (5) inflow pond.The float valve ball float of this kind form will be set the size of ball float according to the pressure of pipe network, dam if designed little and do not reached effectively, has designed bad installation big and consumption material again.Another kind of for the pressure that relies on pipe network liquid self comes pipeline is dammed, referring to accompanying drawing 3.When the water in the pond increases to ball float (1), ball float (1) upwards floats under buoyancy function, piston (2) moves forward under the prizing of lever (3), when the buoyancy of ball float (1) is mentioned power that lever (3) prizes piston (2) greater than the ductwork pressure of the water inlet of introducing through aqueduct (10) (8), the press water of pipe network is blocked up by piston (2), and the press water in the pipe network no longer flows out through water outlet (5).This moment, the press water through the water inlet (8) that aqueduct (10) is introduced can only flow in the control chamber (6), press water expands in control chamber (6), because of the installation of sheet rubber (7) is hermetic, sheet rubber (7) also begins to expand under the active force that the water that is stressed expands in control chamber (6), piston (11) begins to move forward under the effect that sheet rubber (7) expands, when moving to the position that designs, block water inlet (8), make the ductwork pressure water of water inlet (8) no longer in water outlet (9) inflow pond, reach the purpose of damming.The latus rectum that the float valve press water of this kind form enters control chamber be generally 2 millimeter (if design greater than more than 2 millimeters under some operating mode valve can produce vibration), so to the water quality requirement height in the pipe network.

The model utility content:

The purpose of this utility model is to overcome the drawback of above-mentioned valve.The first, be to rely on the pressure of pipe network self to come pipeline is dammed, make that the control ball float is very little; The second, it is to enter through the gap between piston rod and the guide piston bar cover that press water enters control chamber, because piston rod takes regular exercise and can not result in blockage, so not high to the water quality requirement in the pipe network, greatly reduces the generation of fault herein.

Technical solution of the present utility model is a piston-type hydro pressure-controlled float valve, mainly is made of valve water intake seat, valve seat and piston; The guide piston bar cover in piston upper and lower when motion is installed on the valve seat bottom and extends upward on the position of certain distance, and guide rod leaves the gap between overlapping with the guide piston bar; Piston circumference side is slidingly matched with the chevron shaped Sealing that is installed on the valve seat, and the top intercepter plate end face of piston and the pipe tap tone of valve water intake seat are closed and constituted the mouth that dams; The control chamber of valve and valve water intake seat are to be connected through the piston rod connection mouth through float valve by an auxilliary pipe again.This is a structure of the present utility model.

Description of drawings:

Fig. 2 is that the buoyancy of existing dependence ball float is controlled the float valve that dams.

Fig. 3 is that the ducted fluid pressure of existing dependence is controlled the hydraulic control float valve that dams.

Fig. 1 is the utility model hydraulic control floating ball valve structure figure.

Specific embodiments:

The utility model hydraulic control float valve mainly is made of valve water intake seat 1, valve seat 2, piston 3, and referring to accompanying drawing 1, its piston 3 circumference sides are slidingly matched with the chevron shaped Sealing 4 that is installed on the valve seat, and guide rod 5, intercepter plate 7 are linked to be totally with piston 3; Leave the gap between guide rod 5 and the guide piston bar cover 6; The top intercepter plate end face of piston and the tube wall aperture of valve water intake seat 8 coincide and constitute the mouth that dams; Control chamber 9 is connected through float valve 13 and active chamber 11 by pipe laying 12 through joint 10.

Its working principle:

When liquid reaches desired location in the pond, after floating, ball float 14 closes float valve 13, liquid in the control chamber 9 enters active chamber 11 in the gap between joint 10 auxilliary pipe 12 float valves, 13 guide rods 5 and guide piston bar cover 6, because of the area of piston 3 area greater than tube wall aperture 8, move to tube wall aperture 8 directions behind piston 3 pressurizeds, till the tube wall aperture of the top of piston 3 intercepter plate end face and valve water intake seat 18 identical formations were dammed mouth, the water that this moment enters the pond was closed.When liquid in the pond drops to desired location when following, ball float 14 descends and opens float valve 13, and the pressure of liquid is released in the atmosphere in the active chamber 11, and piston 3 is pressurized no longer, and 8 water outlets 15 enter in the pond liquid in the control chamber 9 through the tube wall aperture.

Its advantage of the utility model hydraulic control ball-cock assembly is: easy for installation; To water quality requirement Not high, Maintenance free; Liquid level control accurately; Low cost of manufacture.

Claims

A kind of piston-type hydro pressure-controlled float valve mainly is made of valve water intake seat, valve seat, piston, it is characterized in that:

(1) top of piston is that the intercepter plate below is guide rod, and guide rod, intercepter plate and piston are linked to be totally;

(2) the guide piston bar cover in piston upper and lower when motion is installed on the valve seat bottom and extends upward on the position of certain distance;

(3) piston circumference side is slidingly matched with the chevron shaped Sealing that is installed on the valve seat, and the pipe tap tone of piston top intercepter plate end face and valve water intake seat is closed and constituted the mouth that dams;

(4) leave the gap between guide rod and the guide piston bar cover.