CN2674216Y

CN2674216Y - Automatic discharge valve

Info

Publication number: CN2674216Y
Application number: CN 200420038151
Authority: CN
Inventors: 张泽勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-17
Filing date: 2004-01-17
Publication date: 2005-01-26
Anticipated expiration: 2014-01-17

Abstract

The utility model relates to an automatic air discharging valve. The utility model comprises a valve body with an air inlet and an upper cover seal-butted with the valve body. A float ball being able to move up and down is positioned in the chamber of the valve body. The upper end of the float ball is fixed with a guide sealing sleeve positioned in the chamber of the upper cover. The bottom part of the chamber of the sealing sleeve is provided with a sealing pad. The top part of the upper cover is fixed with a hollow guide air discharging needle. The lower thin segment of the guide air discharging needle is positioned in the chamber of the upper cover and inserts into the chamber of the guide sealing sleeve to be sealed by the sealing pad. The upper end of the guide air discharging needle is fixed with a sealing base. The top face of the sealing base is inserted with a valve core. The two ends of the valve core extend outwardly. The lower segment of the valve core inserts into the guide air discharging needle. The sealing base is rotating-connected with a safety cap. The safety cap is connected with a guide pipe connected with the chamber of the safety cap. The automatic air discharging valve has the tight sealing, the reliable work, the high practicability and the high sensitivity.

Description

Automatic control pressure vent

Technical field

The utility model relates to a kind of outlet valve, a kind of automatic control pressure vent of more specifically saying so.

Background technique

Outlet valve is one of indispensable accessory in hot water system or the similar water circulation system, in running, can produce gas in the circulatory system, these gases accumulate in together, form vent plug, influence the circulation of water in the system, for hot water system, the formation of vent plug can badly influence the radiating effect of radiator.In order in time these gases to be discharged from the circulatory system, various types of automatic control pressure vents are born in succession, as the patent No. be 98236548.9 and the patent No. be 00257743.7 vertical automatic exhaust valve, the vertical automatic exhaust valve of these two kinds of different structures, all be to drive valve rod by ball float to move up and down during work, its drawback is the easy generation radial deflection of moving up and down of valve rod, makes outlet valve poorly sealed close, and severe patient can make outlet valve lose efficacy.Also, reduced the air displacement of the circulatory system, the sensitivity of outlet valve is reduced owing to guide holder is housed at the suction port place of valve body.

Summary of the invention

The purpose of this utility model provides a kind of tight automatic control pressure vent that seals.

In order to realize above-mentioned purpose, the automatic control pressure vent that is provided, comprise the valve body that has suction port, the loam cake that docks with valve seal, in the inner chamber of valve body, be placed with the ball float that can move up and down, its structural feature is that the upper end of ball float is connected with the pilot seal cover that is positioned at cover cavity, sealing gasket is equipped with in the bottom of pilot seal cover inner chamber, be connected with hollow guiding exhaust needle at the top of loam cake, the following thin segment of guiding exhaust needle is arranged in cover cavity, and be inserted in the pilot seal cover inner chamber and seal by sealing gasket, the upper end of guiding exhaust needle is connected with sealing seat, be plugged with the overhanging spool in two ends on the sealing seat end face, the hypomere of spool is inserted in the guiding exhaust needle, is connected with protecting cap on the sealing seat, is connected to the guide pipe that is communicated with the protecting cap inner chamber on the protecting cap.

As improvement to automatic control pressure vent, in the middle epimere of guiding exhaust needle is hollow, spring is housed, the lower end of spool and sealing seat plugging position is equipped with seal ring, and the outer end of guide pipe is set with sebific duct.

During installation, this automatic control pressure vent is installed on the pipeline of the terminal extreme higher position of the circulatory system.

Under normal operating condition, be screwed to the end under the protecting cap, the compressing spool moves down, so spool and seal ring separate with sealing seat, the inner chamber that makes protecting cap overlaps inner chamber by hollow, the pilot seal of guiding exhaust needle and is communicated with the inner chamber of loam cake, valve body.The gas that produces in the circulatory system in running, enter into the inner chamber of loam cake, valve body through the suction port of valve body, along with the increasing of gas, pressure increase, make the drawdown in the valve body, the decline of this water level makes ball float drive the decline of pilot seal cover, and sealing gasket separates with the guiding exhaust needle, so, gas overlaps inner chamber, guiding exhaust needle inner chamber, valve seat and protecting cap inner chamber through pilot seal, is discharged by guide pipe.Along with the discharge of gas, the water level in the valve body is corresponding to rise, and under floating function, ball float drives the pilot seal cover and rises, when the pilot seal cover rise to sealing gasket is contacted with the guiding exhaust needle is tight after, will the lead hollow seal of exhaust needle of sealing gasket.Above-mentioned process is gone round and begun again, and realizes automatic vent.

When the parts of the circulatory system that needs repairing, will twist on the protecting cap and take off, at this moment, under the effect of spring, spool is by seal ring and sealing seat sealing, and the inner chamber of realization automatic control pressure vent is hedged off from the outer world.

Automatic control pressure vent described in the utility model, in the working procedure of gathering and discharging gas, just ball float and pilot seal put down and move, guiding exhaust needle transfixion, the restriction that pilot seal is enclosed within the process that moves up and down because of the exhaust needle that is subjected to leading can not produce radial deflection, the bottom of pilot seal cover inner chamber is equipped with sealing gasket again, and therefore, sealing is tight.Also, increased the diameter of suction port relatively, increased the gentle flow of water, the sensitivity that has improved outlet valve because the suction port of valve body has been cancelled guide holder.At the sebific duct of the outer end of guide pipe suit, can eliminate exhaust noise effectively, help environmental protection.

Learn by above narration, automatic control pressure vent described in the utility model, not only sealing is tight, and reliable operation is practical, and highly sensitive.

Description of drawings

Embodiment of the present utility model is illustrated in conjunction with the accompanying drawings, and what wherein accompanying drawing drew is the structural representation of automatic control pressure vent.Among the figure: 1 is valve body, and 2 is ball float, and 3 is the pilot seal cover, and 4 is loam cake, and 5 is screw, and 6 is sealing gasket, 7 are the guiding exhaust needle, and 8 is protecting cap, and 9 is the O RunddichtringO, and 10 is sealing seat, and 11 is spool, 12 is seal ring, and 13 is spring, and 14 is guide pipe, and 15 is sebific duct, and 16 is the O RunddichtringO.

Embodiment

With reference to accompanying drawing, the described automatic control pressure vent of embodiment, comprise the valve body 1 that has suction port, seal the loam cake 4 that docks by O RunddichtringO 9 and screw 5 with valve body 1, in the inner chamber of valve body 1, be placed with the ball float 2 that can move up and down, the upper end of ball float 2 is connected with the pilot seal cover 3 that is positioned at loam cake 4 inner chambers, sealing gasket 6 is equipped with in the bottom that pilot seal is overlapped 3 inner chambers, spin at the top of loam cake 4 and to be fixed with hollow guiding exhaust needle 7, the following thin segment of guiding exhaust needle 7 is arranged in loam cake 4 inner chambers, and be inserted into pilot seal and overlap in 3 inner chambers by sealing gasket 6 sealings, the upper end of guiding exhaust needle 7 spins and is fixed with sealing seat 10, be plugged with the overhanging spool in two ends 11 on sealing seat 10 end faces, the hypomere of spool 11 is inserted in the guiding exhaust needle 7, in the middle epimere of guiding exhaust needle 7 is hollow, spring 13 is housed, spool 11 is equipped with seal ring 12 with the lower end of sealing seat 10 plugging position, O RunddichtringO 16 is housed on the sealing seat 10 and is connected with protecting cap 8, be connected to the guide pipe 14 that is communicated with protecting cap 8 inner chambers on the protecting cap 8, the outer end of guide pipe 14 is set with sebific duct 15.

Claims

1, a kind of automatic control pressure vent, comprise the valve body (1) that has suction port, the loam cake (4) that docks with valve body (1) sealing, in the inner chamber of valve body (1), be placed with the ball float (2) that can move up and down, the upper end that it is characterized in that ball float (2) is connected with the pilot seal cover (3) that is positioned at loam cake (4) inner chamber, sealing gasket (6) is equipped with in the bottom of pilot seal cover (3) inner chamber, be connected with hollow guiding exhaust needle (7) at the top of loam cake (4), the following thin segment of guiding exhaust needle (7) is arranged in loam cake (4) inner chamber, and be inserted in pilot seal cover (3) inner chamber and seal by sealing gasket (6), the upper end of guiding exhaust needle (7) is connected with sealing seat (10), be plugged with the overhanging spools in two ends (11) on sealing seat (10) end face, the hypomere of spool (11) is inserted in the guiding exhaust needle (7), be connected with protecting cap (8) on the sealing seat (10), be connected to the guide pipe (14) that is communicated with protecting cap (8) inner chamber on the protecting cap (8).

2, automatic control pressure vent according to claim 1 is characterized in that in the middle epimere of guiding exhaust needle (7) is hollow spring (13) being housed, and spool (11) is equipped with seal ring (12) with the lower end of sealing seat (10) plugging position.

3, automatic control pressure vent according to claim 1 and 2 is characterized in that the outer end of guide pipe (14) is set with sebific duct (15).