CN202531987U

CN202531987U - Combined vent valve

Info

Publication number: CN202531987U
Application number: CN 201220013065
Authority: CN
Inventors: 许国荣
Original assignee: TONGLING GUOFANG PLUMBING TECHNOLOGY Co Ltd
Current assignee: TONGLING GUOFANG PLUMBING TECHNOLOGY Co Ltd
Priority date: 2012-01-12
Filing date: 2012-01-12
Publication date: 2012-11-14
Anticipated expiration: 2022-01-12

Abstract

The utility model discloses a composite vent valve which comprises a valve body and a valve cover which enables a flange to be connected with the top of the valve body in sealing mode. A protective cover is arranged on a cavity mouth of steps arranged at the center of the top of the valve cover. The valve cover is further provided with a micro-volume exhaust valve body. An inner container is arranged on an inner wall of the lower portion of the valve body. The bottom of the valve body extends upward to form a cone-shaped cavity mouth. A floating ball is arranged in the inner container. The bottom of the floating ball is pressed on the upper cone-shaped surface of the cone-shaped cavity mouth of the inner container. An ejector rod is connected with the center of the top of the floating ball. A mounting seat is disposed in a through cavity arranged at the center of the valve cover. The center of the mounting seat is provided with a guide rod in sliding mode, and a valve flap is connected with the lower end of the guide rod. Moreover, the centers of the guide rod and the valve clap are respectively provided with a central through cavity. The top end of the ejector rod of the floating ball is align and close to the cavity mouths which are arranged at lower portion of the central through cavities of the guide rod and the valve clap. The composite vent valve is simple in structure, easy to achieve, can effectively solve the problem of air leakage of the exhaust valve, and effectively guarantees air impermeability of the exhaust valve when the floating ball falls back and improves performance of the exhaust valve.

Description

Composite exhaust valve

Technical field

The utility model relates to the outlet valve field, is specially a kind of composite exhaust valve.

Background technique

Water heating system generally adopts water as the medium that transmits heat; Usually be dissolved with certain air in the water; When water temperature raise, the gas in the water can be separated from water gradually, and get together gradually formation big bubble even gas column; Therefore, generally need in the water heating system to adopt outlet valve that the gas in the water is discharged.Outlet valve generally by valve body be arranged on float in the valve body etc. and constitute; Gas is from valve body lower portion accent entering valve body and make the float come-up of blocking the valve body lower portion accent to realize exhaust, and the valve body lower portion accent was blocked in float falling under action of gravity again after exhaust finished.In the existing technology, owing to airtightly combine not thoroughly, the problem that often leaks air, and float position valve body lower portion accent that can squint sometimes when falling after rise cause outlet valve to lose efficacy between vent valve float and the valve body lower portion accent.

The model utility content

The utility model purpose provides a kind of composite exhaust valve, is prone to gas leakage to solve the existing technology outlet valve, and the problem that deviation can cause outlet valve to lose efficacy appears in float falling position.

In order to achieve the above object, the technological scheme that the utility model adopted is:

Composite exhaust valve comprises the valve body with cavity, and flange is tightly connected at the valve gap at valve body top; Valve gap has the center cavity, and the top of valve gap has center step accent, and on the center step accent of valve gap the protective housing of blocking center step accent is installed; The micro-exhaust valve that is communicated with the valve body cavity also is installed on the said valve gap; It is characterized in that: said valve body lower portion inwall is provided with inner bag, and the inner bag bottom is positioned at the following accent place of valve body cavity, and the inner bag bottom upwards forms the taper accent; But be provided with the ball float of free floating in the inner bag; Said ball float self gravitation effect lower bottom part be pressed in inner bag bottom taper accent on the conical surface, the ball float top center is connected with vertical push rod, said valve gap center cavity internal fixation is equipped with fitting seat; The fitting seat central slide is equipped with along the guide rod that vertically stretches in the valve body cavity; Lower end of the guide rod is connected with flap, and guide rod, flap center be provided with the center cavity that supplies ball float top push rod to get into, and the top of said ball float push rod is aimed at and near the bottom accent of guide rod, flap center cavity.

Described composite exhaust valve; It is characterized in that: the bottom has the bench port of undergauge in the said micro-exhaust valve; Be positioned at bench port in the trace exhaust valve and be provided with the rubber column that can get lodged on the bench port; Trace exhaust valve top has valve port, and is provided with exhaust bolt in the valve port of micro-exhaust valve top.

Described composite exhaust valve is characterized in that: said flap bottom centre has groove, is provided with annular rubber cushion in the groove.

Described composite exhaust valve is characterized in that: form circular groove on the said bonnet lower capping, be provided with in the circular groove and be enclosed within the outer ring packing packing ring of guide rod.

The utility model is simple in structure, is easy to realize.Valve body cavity inwall bottom is provided with inner bag; The inner bag bottom has the taper accent that upwards is provided with; Be pressed under the ball float on the taper accent epicone face of inner bag, the last conical surface through the taper accent cooperates with ball float sphere bottom, can effectively improve the tightness that combines between ball float and the valve body lower portion accent; The center cavity of guide rail, flap supplies the push rod at ball float top to stretch into simultaneously; Like this after the ball float come-up, utilize to cooperate between push rod and guide rod, the flap center cavity and realize locating, can block the valve body lower portion accent fully when making the ball float falling.The utility model can effectively solve the problem of outlet valve gas leakage, and the tightness of outlet valve can guarantee effectively that ball float falls after rise the time, has improved the performance of outlet valve.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Embodiment

As shown in Figure 1.Composite exhaust valve comprises the valve body 1 with cavity, and flange is tightly connected at the valve gap 2 at valve body 1 top; Valve gap 2 has the center cavity, and the top of valve gap 2 has center step accent 3, and on the center step accent 3 of valve gap 2 protective housing 4 of blocking center step accent 3 is installed; The micro-exhaust valve 5 that is communicated with valve body 1 cavity also is installed on the valve gap 2; Valve body 1 lower inner wall is provided with inner bag 6, and inner bag 6 bottoms are positioned at following accent 7 places of valve body 1 cavity, and inner bag 6 bottoms upwards form taper accent 8; But be provided with the ball float 9 of free floating in the inner bag 6; Ball float 9 self gravitation effect lower bottom part be pressed in inner bag 6 bottom taper accents 8 on the conical surface, ball float 9 top center are connected with vertical push rod 10, valve gap 2 center cavity internal fixation are equipped with fitting seat 11; Fitting seat 11 central slide are equipped with along the guide rod 12 that vertically stretches in valve body 1 cavity; Guide rod 12 lower ends are connected with flap 13, and guide rod 12, flap 13 centers be provided with the center cavity that supplies ball float 9 top push rods 10 to get into, and the top of ball float 9 push rods 10 is aimed at and near the bottom accent of guide rod 12, flap 13 center cavities.

The bottom has the bench port of undergauge in the trace exhaust valve 5; Be positioned at bench port in the trace exhaust valve 5 and be provided with the rubber column 14 that can get lodged on the bench port; Trace exhaust valve 5 tops have valve port, and are provided with exhaust bolt 15 in the micro-exhaust valve 5 top valve ports.

Flap 13 bottom centre have groove, are provided with annular rubber cushion 16 in the groove.

Form circular groove on the valve gap 2 bottom cappings, be provided with the ring packing packing ring 17 that is enclosed within outside the guide rod 12 in the circular groove.

Claims

1. composite exhaust valve comprises the valve body with cavity, and flange is tightly connected at the valve gap at valve body top; Valve gap has the center cavity, and the top of valve gap has center step accent, and on the center step accent of valve gap the protective housing of blocking center step accent is installed; The micro-exhaust valve that is communicated with the valve body cavity also is installed on the said valve gap; It is characterized in that: said valve body lower portion inwall is provided with inner bag, and the inner bag bottom is positioned at the following accent place of valve body cavity, and the inner bag bottom upwards forms the taper accent; But be provided with the ball float of free floating in the inner bag; Said ball float self gravitation effect lower bottom part be pressed in inner bag bottom taper accent on the conical surface, the ball float top center is connected with vertical push rod, said valve gap center cavity internal fixation is equipped with fitting seat; The fitting seat central slide is equipped with along the guide rod that vertically stretches in the valve body cavity; Lower end of the guide rod is connected with flap, and guide rod, flap center be provided with the center cavity that supplies ball float top push rod to get into, and the top of said ball float push rod is aimed at and near the bottom accent of guide rod, flap center cavity.

2. composite exhaust valve according to claim 1; It is characterized in that: the bottom has the bench port of undergauge in the said micro-exhaust valve; Be positioned at bench port in the trace exhaust valve and be provided with the rubber column that can get lodged on the bench port; Trace exhaust valve top has valve port, and is provided with exhaust bolt in the valve port of micro-exhaust valve top.

3. composite exhaust valve according to claim 1 is characterized in that: said flap bottom centre has groove, is provided with annular rubber cushion in the groove.

4. composite exhaust valve according to claim 1 is characterized in that: form circular groove on the said bonnet lower capping, be provided with in the circular groove and be enclosed within the outer ring packing packing ring of guide rod.