CN201836397U

CN201836397U - Automatic exhaust valve

Info

Publication number: CN201836397U
Application number: CN2010206125474U
Authority: CN
Inventors: 徐骁
Original assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Current assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Priority date: 2010-11-09
Filing date: 2010-11-09
Publication date: 2011-05-18
Anticipated expiration: 2020-11-09

Abstract

The utility model relates to an automatic exhaust valve, which comprises a valve body, a valve cover, a valve rod, a float ball, a gemel, a bracket, a spring, a piston, a moisture-absorbing exhaust cap and an 'O'-shaped sealing ring. The moisture-absorbing exhaust cap consists of an exhaust cap body and a moisture-absorbing paper sheet. The design is provided with a primary sealing measure on a valve cover exhaust hole through the contact or separation of a valve rod circular conical surface and the 'O'-shaped sealing ring and a secondary sealing measure on the top of the valve cover, which comprises the exhaust cap body and the moisture absorbing paper sheet. After being contacted with water, the moisture-absorbing paper sheet of the secondary sealing measure expands quickly and seals a transverse exhaust passageway of the exhaust cap body. The double sealing structure ensures reliable water sealing when a valve of a system does not exhaust and the valve cover exhaust hole leaks, hot water in the system does not flow out, the system is safe and reliable and loss is avoided.

Description

A kind of automatic control pressure vent

Technical field

The utility model relates to a kind of outlet valve, especially is applied to a kind of float-ball type automatic control pressure vent in the heating system.

Background technique

The central heat supply in winter is the important composition part that the northern China urban function is built, and the quality of its quality will directly influence the people's daily life, and all departments all attach great importance to this.According to heating experience for many years, heating system causes the not good accident problem of heating effect of common occurrence because of exhaust is bad, and therefore, the exhausting problem of resolving heating system is vital.The outlet valve that is adopted on heating system at present adopts Lever type ball float mechanism mostly, and still adopt the manually operated type valve mostly, the manually operated type drain tap is set on the pipeline of heating system exactly, adopt regularly exhaust of manual type, operating process is cumbersome, if do not reach desired effects, will influence the heating effect of heating system.For addressing this problem, existing many heating systems have designed automatic control pressure vent, and begun to use, some improves structure, and some improves in selection, also utilize the pressure difference principle, though these valve mechanisms are also uncomplicated, manufacture cost is not high yet, and the greatest drawback that exists is that valve water shutoff when not exhaust is unreliable, cause the hot water outflow easily, cause damage to system.

Summary of the invention

In view of the defective of prior art, goal of the invention of the present utility model is to provide a kind of water shutoff good reliability, makes system safer, reliable; Guarantee simultaneously a kind of automatic control pressure vent simple in structure, that exhaust is highly sensitive again.

Goal of the invention of the present utility model is achieved through the following technical solutions: a kind of automatic control pressure vent, the valve gap that it comprises the valve body of connection sealed to each other and has exhaust port, be provided with ball float in the chamber that constitutes by valve body and valve gap, this ball float and hinge one end are hinged, the hinge the other end and support are hinged, the valve rod lower end is connected on the hinge, and pass valve gap exhaust port and this exhaust port and form opening/shutting valve, described valve rod upper end connects the piston that has axial exhaust ducts, the middle part is with spring, and the opening/shutting valve that described valve rod and valve gap exhaust port form is to be located at " O " RunddichtringO of takeing in the valve gap and to realize closing with the contact of described valve rod conical surface or to separate and realize unlatching; On described valve gap, be provided with simultaneously the moisture absorption smoke releasing cap.

Described piston is flower type structure, is axial exhaust ducts between petal and the petal.

Described moisture absorption smoke releasing cap is made of the multi-layer stacked moisture absorption scraps of paper that have vent that are sealedly connected on the smoke releasing cap body on the valve gap and be located in the smoke releasing cap body, and has horizontal exhaust passage on the smoke releasing cap body.Both sides and the symmetrical distribution at the smoke releasing cap body opened in described horizontal exhaust passage.

Described valve rod embeds on the interior shoulder of piston with the cone structure that is connected with valve stem tip of piston.

Compared with prior art, the utility model is on the basis of common lever formula ball float mechanism simple in structure, drain tap has adopted the double sealing structures such as moisture absorption smoke releasing cap of " O " RunddichtringO and safety type, double sealing structure had not only guaranteed exhaust sensitivity, but also water shutoff good reliability when guaranteeing that valve leaks in not exhaust, internal system hot water is not outflowed avoid incurring loss, improved the Security and the reliability of outlet valve.

Description of drawings

Fig. 1 is the utility model sectional structure schematic representation.

Fig. 2 is stem structure figure.

Fig. 3 is the piston sectional structure chart.

Fig. 4 is Fig. 3 plan view.

Fig. 5 is a smoke releasing cap body sectional structure chart.

Fig. 6 is the A-A sectional view of Fig. 5.

Embodiment

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

As shown in Figure 1, a kind of automatic control pressure vent, comprise the valve body 1 and the valve gap 6 that on junction plane, are provided with the sealing of " O " RunddichtringO that are threaded mutually, be provided with exhaust port in the valve gap, be provided with ball float 2 in the chamber that is made of valve body, valve gap, the hook of this ball float and hinge 3 one ends is hinged, and the hinge the other end is hinged on again on the support 5 of the inside oblique extension in valve body top, valve rod 4 lower ends are connected on the hinge 3, follow the decline of hinge and descend.

Described valve rod 4 as shown in Figure 2, from bottom to top be gradually fine texture, in conical surface 41 is arranged, the top is a tapered structure 42, it passes valve gap 6 exhaust ports and constitutes a resealing structure with this exhaust port, realizes closing or separating the valve of realizing unlatching by its conical surface 41 with " O " RunddichtringO 11 contacts that are located at valve gap 6 interior shoulders, and the tapered structure 42 on top embeds on the interior shoulder 83 of pistons 8, the middle part is with spring 7, plays the reset response of piston 8.

Described piston 8 for flower type exhaust pition, is an axial exhaust ducts 82 between petal 81 and the petal 81 shown in Fig. 3～4, is illustrated as five petal design, the valve rod tapered structure 42. that interior shoulder 83 snapping elasticity embed

The utility model is provided with the moisture absorption smoke releasing cap at valve gap 6 tops, and this moisture absorption smoke releasing cap is by being threaded in the valve gap top and constituting with " O " RunddichtringO the smoke releasing cap body 9 that is tightly connected and the multi-layer stacked moisture absorption scraps of paper that have vent 10 that are located in the smoke releasing cap body.Described smoke releasing cap body 9 has horizontal exhaust passage 91 on it shown in Fig. 5～6, both sides and the symmetrical distribution at smoke releasing cap body 9 opened in this horizontal exhaust passage.The described moisture absorption scraps of paper 10 are material with the fiber.

The working principle of automatic control pressure vent: when the air that gathers when valve body 1 upper end increases, ball float 2 is owing to deadweight descends with the water surface, valve rod 4 moves downward under the leverage of hinge 3, driving valve rod simultaneously descends, the conical surface 41 that makes valve rod separates with " O " RunddichtringO 11 and opens valve gap 6 exhaust port valves, gas is got rid of this moment spring 7 energy storage through the axial exhaust ducts 82 of flower type exhaust pition 8 through the moisture absorption scraps of paper 10 gaps of upper end and the horizontal exhaust passage 91 of smoke releasing cap body both sides from exhaust port.After air scavenge was intact, the water surface rose in the valve body 1, and ball float 2 rises thereupon, and valve rod 4 is released and can be risen under the active force at spring 7, valve rod conical surface 41 is contacted again with " O " RunddichtringO 11 at valve gap exhaust port place exhaust port is sealed, and realizes a resealing measure.

The safety type moisture absorption smoke releasing cap of valve gap 6 tops, form with the smoke releasing cap body 9 of " O " RunddichtringO sealing and the multi-layer stacked moisture absorption scraps of paper 10 by being threaded in the valve gap top, the smoke releasing cap body is provided with horizontal exhaust passage 91, have exhaust port in the middle of being located at the moisture absorption scraps of paper in the smoke releasing cap body, when the valve gap exhaust port leaks in not exhaust, realize double seal approach.

The working principle of moisture absorption smoke releasing cap is to work as the moisture absorption scraps of paper 10 under normal conditions, because anhydrous in the smoke releasing cap body 9, the scraps of paper are drying regime, and thickness is S; When leaking as valve gap 6 exhaust ports, the scraps of paper are met water and are moisture state, and its volume expands 50% rapidly, and its thickness is S+50%, makes not have the slit between the moisture absorption scraps of paper, and seals the horizontal exhaust passage 91 of smoke releasing cap body, and the system Nei Shui of making can not leak; When air in the valve body 1 gathers when needing exhaust once more, the scraps of paper are dried by air, and thickness becomes S once more, gas just once more from scraps of paper slit the horizontal exhaust passage 91 through the smoke releasing cap body get rid of.

Dual sealing configuration has strengthened the Security and the water shutoff reliability of automatic control pressure vent, and assurance internal system hot water does not outflow and incurs loss.

Claims

1. automatic control pressure vent, the valve gap (6) that it comprises the valve body (1) of connection sealed to each other and has exhaust port, be provided with ball float (2) in the chamber that constitutes by valve body and valve gap, this ball float and hinge (3) one ends are hinged, the hinge the other end and support (5) are hinged, valve rod (4) lower end is connected on the hinge, and pass valve gap (6) exhaust port and this exhaust port and form opening/shutting valve, described valve rod (4) upper end connects the piston (8) that has axial exhaust ducts (82), the middle part is with spring (7), it is characterized in that opening/shutting valve that described valve rod (4) and valve gap (6) exhaust port form is to be located at " O " RunddichtringO (11) of takeing in the valve gap and to realize closing with the contact of described valve rod conical surface (41) or to separate the realization unlatching; Simultaneously on described valve gap (6), be provided with the moisture absorption smoke releasing cap.

2. a kind of automatic control pressure vent according to claim 1 is characterized in that described piston (8) is flower type structure, is axial exhaust ducts (82) between petal (81) and the petal (81).

3. a kind of automatic control pressure vent according to claim 1, it is characterized in that described moisture absorption smoke releasing cap is made of the multi-layer stacked moisture absorption scraps of paper (10) that have vent that are sealedly connected on the smoke releasing cap body (9) on the valve gap (6) and be located in the smoke releasing cap body, and on the smoke releasing cap body, have horizontal exhaust passage (91).

4. a kind of automatic control pressure vent according to claim 3 is characterized in that described horizontal exhaust passage (91) opens both sides and the symmetrical distribution at smoke releasing cap body (9).

5. according to each described a kind of automatic control pressure vent of claim 1～4, it is characterized in that described valve rod (4) embeds on the interior shoulder (83) of piston with the cone structure (42) that is connected with valve stem tip of piston (8).