CN210770491U

CN210770491U - Single-ball exhaust valve

Info

Publication number: CN210770491U
Application number: CN201921692464.8U
Authority: CN
Inventors: 赵宏斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-06-16
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a single-ball exhaust valve, which comprises a valve body and a valve cover, wherein the inner cavity of the valve body is provided with a large number of exhaust hoods with spherical surfaces capable of floating up and down, guide pillars are fixedly inserted in the middle parts of the exhaust hoods, the upper parts of the guide pillars are inserted in the middle parts of the valve cover and move up and down in the valve cover, the bottoms of the guide pillars are provided with micro exhaust holes, one ends of the micro exhaust holes are arranged on the bottom surfaces of the guide pillars, and the other ends of the guide pillars are; the inner cavity of the valve body is also provided with a floating ball which is positioned below the micro-vent hole, and when the floating ball is completely floated after air in the valve body is exhausted, the bottom of the micro-vent hole can be blocked. The utility model discloses can in time discharge the compressed mixed gas in the pipeline, prevent breaking of pipeline, reduce the cost and the labour wasting of resources of maintenance, guarantee the safe operation of pipeline. The reduction of air in the pipeline can reduce water resistance (resistance to forward flow of water), save a large amount of electric energy, reduce unnecessary resource waste and benefit the nation and the people.

Description

Single-ball exhaust valve

Technical Field

The utility model relates to an exhaust apparatus technical field for the conduit, in particular to single ball discharge valve.

Background

Along with the continuous development of economy, urban long-distance water delivery projects are increasing day by day. Water is delivered to a high place from a reservoir, a surge chamber and a forebay to a water turbine or a water pump, and a water passing pipeline is buried at the bottom of the dam body of the earth-rock dam, under the ground or in the open. The method can be used for irrigation, hydroelectric generation, urban water supply, drainage, sediment discharge, reservoir emptying, construction diversion and matching with spillway flood discharge and the like. Generally, due to the influence of factors such as terrain, landform and the like, the laying height of the water pipeline is large, and a phenomenon of local gas accumulation can be formed in the pipeline.

The exhaust valve in the water pipeline is mainly used at the highest point or a place where the pipeline is closed, is used for exhausting gas in the pipeline and dredging the pipeline, so that the pipeline can normally operate, negative pressure can occur in the pipeline if power is cut off or the pump is stopped suddenly, the pipeline is vibrated or broken, the exhaust valve can eliminate water hammer caused by gas accumulation in the pipeline, the possibility of pipe explosion is greatly reduced, and the exhaust valve has great significance for the water pipeline. And when the pipeline normally runs, the exhaust valve can be used for exhausting gas separated out from water so as to prevent air from accumulating in the pipeline, reduce the water passing section and increase the head loss of the pipeline.

The structure of the exhaust valve in the prior art is shown in figure 1, and the exhaust valve comprises a valve body, a valve cover and a floating ball, and has the defects that air and water molecular bubbles in a pipeline cannot be completely discharged out of the pipeline, the floating ball can be blown up when the air displacement and pressure of the pipeline are increased, an exhaust port is blocked, the air in the pipeline cannot be completely discharged, an air chamber in the pipeline is gradually increased, pipe explosion is caused, the welding line is cracked, and the normal operation of the pipeline is influenced.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide a single-ball exhaust valve to solve the problems in the prior art.

The utility model adopts the following technical scheme:

a single-ball exhaust valve comprises a valve body and a valve cover, wherein a large number of exhaust hoods which can float up and down and are spherical are arranged in an inner cavity of the valve body, guide pillars are fixedly inserted in the middles of the exhaust hoods, the upper parts of the guide pillars are inserted in the middles of the valve cover and move up and down in the valve cover, micro exhaust holes are formed in the bottoms of the guide pillars, the bottom ends of the micro exhaust holes are formed in the bottom surfaces of the guide pillars, and the top ends of the micro exhaust holes are formed in the side walls; the inner cavity of the valve body is also provided with a floating ball which is positioned below the micro-vent hole, and when the floating ball is completely floated after air in the valve body is exhausted, the bottom of the micro-vent hole can be blocked.

Furthermore, the height of the bottom end of the micro exhaust hole is not lower than the height of the contact surface of the large number of exhaust covers and the valve body when the large number of exhaust covers are closed.

Further, the micro-exhaust hole is T-shaped.

Furthermore, a trace exhaust hole sealing gasket is fixedly connected to the top of the floating ball.

Furthermore, the single-ball exhaust valve further comprises a ball cage, and the floating ball is located in the ball cage.

Furthermore, the valve cover is fixedly connected with a rain cover.

Further, a cylindrical insect-proof net is arranged between the rain-proof cover and the valve cover.

Furthermore, the contact surface of the valve body and a large number of exhaust hoods is fixedly connected with an annular sealing gasket.

The utility model has the advantages as follows:

1. the pipeline begins to intake, and the water level is constantly rising, and the floater slowly floats to promote the guide pillar and drive a large amount of exhaust hoods and also upwards move together, at this moment, the floater has plugged up the trace exhaust hole. After the exhaust hoods are completely closed, the residual air with pressure and trace water-air mixed gas in the pipeline can be accumulated on the upper part of the inner cavity of the valve body below the exhaust hoods, when the sum of the pressure of the mixed gas and the gravity of the floating ball is greater than the buoyancy borne by the floating ball, the floating ball can be pushed downwards to form a space with the trace exhaust hole, and at the moment, the mixed gas is exhausted through the trace exhaust hole. The floater blocks up the trace exhaust hole once more through buoyancy rebound after the mist is discharged, so the work is repeated, the compressed mist in the pipeline can be discharged in time, the pipeline is prevented from breaking, the cost of maintenance and labor resource waste are reduced, and the safe operation of the pipeline is ensured. The reduction of air in the pipeline can reduce water resistance (resistance to forward flow of water), save a large amount of electric energy, reduce unnecessary resource waste and benefit the nation and the people.

2. The utility model discloses a floater top is equipped with trace exhaust hole seal gasket, and the valve body fills up with the contact surface fixedly connected with annular seal of a large amount of exhaust hoods, reaches sealed requirement more easily when its effect lies in making two parts contact.

3. The utility model discloses a be equipped with the fly net of tube-shape between rain-proof lid and the valve gap, can prevent effectively that the insect from influencing quality of water in discharge valve entering pipeline.

Drawings

FIG. 1 is a schematic view of a prior art vent valve configuration;

fig. 2 is a schematic structural diagram of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the upper portion of the inner chamber of the valve body collecting the mixed gas during the operation of the present invention;

FIG. 5 is an enlarged schematic view of the structure at B in FIG. 4;

fig. 6 is a schematic view of the present invention when the mixed gas is completely removed during the use process.

Shown in the figure: 1-valve body, 2-valve cover, 3-floating ball, 4-micro vent hole sealing gasket, 5-sealing gasket, 6-rain cover, 7-insect-proof net, 8-large amount of exhaust hood, 9-guide pillar, 10-micro vent hole, 11-fluid medium (water).

Detailed Description

As shown in fig. 2-3, a single-ball exhaust valve comprises a valve body 1 and a valve cover 2, wherein a large number of exhaust hoods 8 which can float up and down and are spherical are arranged in an inner cavity of the valve body 1, guide pillars 9 are fixedly inserted in the middles of the large number of exhaust hoods 8, the upper parts of the guide pillars 9 are inserted in the middles of the valve cover 2 and move up and down in the valve cover, T-shaped micro exhaust holes 10 are formed in the bottoms of the guide pillars 9, the bottom ends of the micro exhaust holes 10 are formed in the bottom surfaces of the guide pillars 9, and the upper ends of the micro exhaust holes are; when the large number of exhaust hoods 8 are closed, the height of the bottom end of the micro exhaust hole 10 is not lower than that of the contact surface of the large number of exhaust hoods 8 and the valve body 1; the inner cavity of the valve body 1 is also provided with a ball cage and a floating ball 3, the floating ball 3 is positioned in the ball cage and below the micro-exhaust hole 10, and the bottom of the micro-exhaust hole 10 can be sealed when the floating ball 3 is completely floated after air in the valve body 1 is exhausted.

The top of the floating ball 3 is fixedly connected with a trace exhaust hole sealing gasket 4, and the contact surface of the valve body 1 and the large number of exhaust hoods 8 is fixedly connected with an annular sealing gasket 5.

Rain-proof lid 6 of ancient fixedly connected with on valve gap 2 is equipped with the fly net 7 of tube-shape between rain-proof lid 6 and the valve gap 2.

The working process of the utility model is as follows:

the utility model discloses install at the pipe-line and use, the pipeline begins to intake, and the water level of 1 inner chamber of valve body constantly risees, and the air escape of 1 inner chamber of valve body, floater 3 float, upwards promote guide pillar 9 when floater 3 floats, and guide pillar 9 drives a large amount of 8 together rebound of exhaust hood. As shown in fig. 4-5, after the exhaust hoods 8 are completely closed, the mixture of air and trace water vapor under pressure in the pipe which is not exhausted accumulates on the upper part of the inner cavity of the valve body 1 below the exhaust hoods 8, when the sum of the pressure of the mixture and the gravity of the floating ball 3 is greater than the buoyancy force borne by the floating ball 3, the floating ball 3 is pushed downwards to form a gap with the trace exhaust hole 10, and at the moment, the mixture is exhausted through the trace exhaust hole 10. As shown in fig. 6, the pressure decreases after the mixed gas is discharged, and the float ball 3 slowly floats up to close the micro vent hole 10 again.

A large amount of water molecule bubbles can be generated in the pipeline in the operation process, the bubbles move upwards and are gradually accumulated on the upper part of the inner cavity of the valve body 1 below the large amount of exhaust hoods 8, the gas pressure is gradually increased, the floating ball 3 starts to move downwards, the micro exhaust holes 10 are opened, high-pressure gas is exhausted again, the floating ball 3 floats after exhausting, the micro exhaust holes 10 are plugged again, and the safe operation of the pipeline is guaranteed.

The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.

Claims

1. A single-ball exhaust valve comprises a valve body and a valve cover and is characterized in that a large number of exhaust hoods which can float up and down and are spherical are arranged in an inner cavity of the valve body, guide pillars are fixedly inserted in the middles of the exhaust hoods, the upper parts of the guide pillars are inserted in the middles of the valve cover and move up and down in the valve cover, micro exhaust holes are formed in the bottoms of the guide pillars, the bottom ends of the micro exhaust holes are formed in the bottom surfaces of the guide pillars, and the top ends of the micro exhaust holes are formed in the side walls of; the inner cavity of the valve body is also provided with a floating ball which is positioned below the micro-vent hole, and when the floating ball is completely floated after air in the valve body is exhausted, the bottom of the micro-vent hole can be blocked.

2. The single-ball exhaust valve as claimed in claim 1, wherein the height of the lower end of the micro-vent is not lower than the height of the contact surface of the plurality of exhaust hoods with the valve body when the plurality of exhaust hoods are closed.

3. The single-ball vent valve of claim 1, wherein the micro-vent is T-shaped.

4. The single-ball exhaust valve according to claim 1, wherein a micro-vent sealing gasket is fixedly connected to the top of the floating ball.

5. The single-ball exhaust valve as claimed in claim 1, further comprising a ball cage, wherein said floating ball is located in said ball cage.

6. The single-ball exhaust valve according to claim 1, wherein a rain cover is fixedly connected to the valve cover.

7. The single-ball exhaust valve according to claim 6, wherein a cylindrical insect-proof net is arranged between the rain-proof cover and the valve cover.

8. The single-ball exhaust valve according to claim 1 wherein said valve body is fixedly connected with an annular gasket at the interface with said plurality of exhaust hoods.