CN215371151U

CN215371151U - Integrated composite high-speed air valve

Info

Publication number: CN215371151U
Application number: CN202121185692.3U
Authority: CN
Inventors: 朱志强; 王伟庆
Original assignee: Tianjin Krs Valve Co ltd
Current assignee: Tianjin Krs Valve Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-12-31
Anticipated expiration: 2031-05-31

Abstract

The utility model provides an integrated combined high-speed air valve, which relates to the technical field of valves and comprises the following components: the first valve body is provided with a spherical cavity and a cylindrical cavity which are integrally formed; the column-shaped cavity is used for communicating a water pipeline, the top of the spherical cavity is provided with a main exhaust port, and the inner diameter of the main exhaust port is not less than that of the column-shaped cavity; the first floating ball assembly is arranged in the ball-shaped cavity and seals the main exhaust port in a floating state; the auxiliary exhaust valve is arranged on the side wall of the first valve body and is provided with an auxiliary exhaust port, and the auxiliary exhaust port is communicated with the outside of the first valve body; the filter screen is integrally in a round table shape, the bottom surface of the round table is overlapped with the bottom surface of the columnar cavity, and the top of the round table is connected with the first floating ball assembly, so that liquid in the water delivery pipeline enters the spherical cavity after passing through the filter screen. The air valve disclosed by the utility model effectively reduces the phenomenon of air valve leakage or abnormal drainage through the combined action of the micro-exhaust structure and the integrated valve body structure.

Description

Integrated composite high-speed air valve

Technical Field

The utility model relates to the technical field of valves, in particular to an integrated combined type high-speed air valve.

Background

The air valve (air inlet and outlet valve) is installed at the local high point, long horizontal section, long uphill section, long downhill section, horizontal section end and other positions of the water outlet pipe of the water pump and the long-distance water delivery pipeline to remove gas in the pipe to dredge the pipeline, so that the pipeline runs normally. The specific working process comprises the following steps: the pipeline exhausts air at high speed when being filled with water, and the throttling exhaust ensures the water filling safety when the water filling is too fast; when the pipeline is drained or the pump is stopped suddenly to discharge, the high-speed air suction breaks the vacuum to prevent the pipeline from forming negative pressure so as to avoid pipeline vibration and pipe explosion. The existing air valve is easy to cause automatic drainage at the exhaust valve under the condition that the water pressure in the pipe is unstable, and the inventor also finds that: the gas vent (valve gap) department of current air valve adopts the ring flange to connect the valve body and carries on spacingly and sealed to the inside floater of valve body, and the ring flange leads to the seepage with the valve body junction is ageing easily, in addition, if the floater frequently still can lead to the ring flange to be connected unstably with ring flange contact (striking), has further aggravated the seepage phenomenon.

SUMMERY OF THE UTILITY MODEL

The utility model aims to at least solve one of the technical problems in the prior art or the related art and provides an integrated combined high-speed air valve, which effectively reduces the phenomena of air valve leakage or abnormal drainage through the combined action of a micro-exhaust structure and an integrated valve body structure.

The utility model is realized by the following technical scheme: an integrated composite high speed air valve comprising: the first valve body is provided with a spherical cavity and a cylindrical cavity which are integrally formed; the column-shaped cavity is used for communicating a water pipeline, the top of the spherical cavity is provided with a main exhaust port, and the inner diameter of the main exhaust port is not less than that of the column-shaped cavity; the first floating ball assembly is arranged in the ball-shaped cavity and seals the main exhaust port in a floating state; the auxiliary exhaust valve is arranged on the side wall of the first valve body and is provided with an auxiliary exhaust port, and the auxiliary exhaust port is communicated with the outside of the first valve body; the filter screen is integrally in a round table shape, the bottom surface of the round table is overlapped with the bottom surface of the columnar cavity, and the top of the round table is connected with the first floating ball assembly, so that liquid in the water delivery pipeline enters the spherical cavity after passing through the filter screen.

In this technical scheme, the valve gap part (main gas vent part) and the air valve main part integrated into one piece of air valve are different from current air valve, need not adopt ring flange and the cooperation of floater subassembly to carry out the gas vent sealed, the great weight that has reduced the valve of integral type structural design, simple structure, the superior performance makes assembly and field installation more convenient. The first valve body is designed to be a full-bore valve body, the cross section area of the flow of all fluid is equal to the nominal diameter, and the flow channel is of a streamline structure, so that a fluid channel can pass through without obstruction, the fluid is smooth, the strength and the rigidity are good, and the leakage problem in the operation process between split flanges is avoided. The setting of filter screen has guaranteed the safety of pipeline operation more, greatly reduced the harm of water hammer, has prevented that the debris in the pipeline from piling up sealed face and influencing sealed, cause a large amount of leaks. The auxiliary exhaust valve is arranged outside the first valve body, and is convenient to maintain and replace.

According to the integrated composite high-speed air valve provided by the utility model, preferably, the auxiliary exhaust valve specifically comprises: the second valve body is provided with an inclined cavity and a vertical cavity, the inclined cavity is communicated with the spherical cavity, and the second floating ball assembly is arranged in the vertical cavity; the included angle between the central axis of the inclined cavity and the central axis of the spherical cavity is 45 degrees. The auxiliary exhaust valve discharges trace exhaust air in real time, the exhaust efficiency is higher, and the design in the 45-degree direction is adopted, so that trace gas can enter the auxiliary exhaust port quickly.

According to the integrated composite high-speed air valve provided by the utility model, preferably, the first floating ball assembly specifically comprises: the ball seat is fixed in the spherical cavity to bear the floating ball, the floating ball is connected with the guide rod, and the guide rod penetrates through a guide hole of the ball seat and extends into the columnar cavity so as to enable the guide rod to slide up and down along the vertical direction.

In the technical scheme, the floating ball is of an integral spherical structure, and the guide rod is of a hexagonal anti-lock structure, so that the phenomena of inflexible rotation and inaccurate positioning of a floating ball lever type structure are avoided.

According to the integrated composite high-speed air valve provided by the utility model, preferably, the filter screen is provided with a screen hole array, and the screen holes are circular.

According to the integrated combined type high-speed air valve provided by the utility model, preferably, the side of the main exhaust port, which is close to the first floating ball component, is provided with the sealing structure, the sealing structure comprises a hard sealing component and a soft sealing component, the hard sealing component is fixed at the main exhaust port, and the soft sealing component is fixed at the lower side of the hard sealing component.

In this technical scheme, adopt soft or hard seal structure, when the service life soft seal sealing washer damages for a certain period, hard sealed the effect so, has striven for the time of maintenance change soft seal rubber circle. Especially on long water transfer lines, large amounts of water spillage are avoided.

According to the integrated combined type high-speed air valve provided by the utility model, preferably, the sealing structure is a multi-point type middle hollow sealing structure, the hard sealing assembly is a hard rubber ring and a hard alloy ring, and the soft sealing assembly is a soft rubber ring.

In the technical scheme, the sealing ring structure adopts a multi-point type middle hollow sealing principle, so that the exhaust valve can achieve sealing zero leakage at low pressure (0.02MPa) better, and low-pressure leakage is avoided. The multi-point hollow structure design can avoid the phenomenon that the floating ball is locked, and the phenomenon that the floating ball cannot come down when negative pressure occurs in the pipeline is prevented.

According to the integrated composite high-speed air valve provided by the utility model, preferably, the hard sealing component is a hard rubber ring, and the soft sealing component is an elastic rubber grid.

According to the integrated composite high-speed air valve provided by the utility model, preferably, the integrated composite high-speed air valve further comprises: the dustproof cover is fixed above the main exhaust port through a bolt; the bolt is screwed into the flange at the top of the first valve body, and the tail part of the bolt is connected with the hanging ring.

According to the integrated composite high-speed air valve provided by the utility model, preferably, the integrated composite high-speed air valve further comprises: and the water outlet is arranged on the first valve body, corresponds to the columnar cavity and is used for connecting the flushing device.

The beneficial effects obtained by the utility model at least comprise: the main exhaust port and the valve body are integrally formed, so that connecting gaps are reduced, and the leakage phenomenon of the exhaust port is reduced; the auxiliary exhaust valve can discharge trace gas in time under the condition of unstable water pressure, thereby reducing the automatic drainage phenomenon of the exhaust valve. The utility model effectively reduces the phenomenon of air valve leakage or abnormal drainage through the combined action of the micro exhaust structure (the auxiliary exhaust valve) and the integrated valve body structure.

Drawings

Fig. 1 shows a schematic view of an integrated composite high-speed air valve according to an embodiment of the present invention.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is an enlarged view at 6 in fig. 1.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1, 2 and 3, the present invention discloses an integrated composite high-speed air valve, comprising: the first valve body 1 is provided with a spherical cavity and a cylindrical cavity which are integrally formed; the column-shaped cavity is used for communicating a water pipeline, the top of the spherical cavity is provided with a main exhaust port 2, and the inner diameter of the main exhaust port is not less than that of the column-shaped cavity; the first floating ball assembly is arranged in the ball-shaped cavity and seals the main exhaust port in a floating state; the auxiliary exhaust valve 4 is arranged on the side wall of the first valve body and is provided with an auxiliary exhaust port 5 which is communicated with the outside of the first valve body; and the filter screen 6 is integrally in a round table shape, the bottom surface of the round table is superposed with the bottom surface of the columnar cavity, and the top of the round table is connected with the first floating ball assembly, so that liquid in the water delivery pipeline enters the spherical cavity after passing through the filter screen.

In the embodiment, the valve cover part (the main exhaust port part) of the air valve and the air valve main body are integrally formed, the air valve is different from the existing air valve, the flange plate and the floating ball assembly do not need to be matched for sealing the exhaust port, the weight of the valve is greatly reduced through the integrated structure design, the structure is simple, the performance is excellent, and the assembly and the field installation are more convenient. The first valve body is designed to be a full-bore valve body, the cross section area of the flow of all fluid is equal to the nominal diameter, and the flow channel is of a streamline structure, so that a fluid channel can pass through without obstruction, the fluid is smooth, the strength and the rigidity are good, and the leakage problem in the operation process between split flanges is avoided. The setting of filter screen has guaranteed the safety of pipeline operation more, greatly reduced the harm of water hammer, has prevented that the debris in the pipeline from piling up sealed face and influencing sealed, cause a large amount of leaks. The auxiliary exhaust valve is arranged outside the first valve body, and is convenient to maintain and replace.

According to the above embodiment, preferably, the sub-exhaust valve includes: the second valve body is provided with an inclined cavity and a vertical cavity, the inclined cavity is communicated with the spherical cavity, and the second floating ball assembly is arranged in the vertical cavity; the included angle between the central axis of the inclined cavity and the central axis of the spherical cavity is 45 degrees. The structure of the second float ball assembly of the secondary exhaust valve is not shown (the structure of the second float ball assembly is similar to that of the first float ball assembly).

According to the above embodiment, preferably, the first float assembly specifically includes: the ball seat is fixed in the spherical cavity to bear the floating ball, the floating ball is connected with the guide rod, and the guide rod penetrates through a guide hole of the ball seat and extends into the columnar cavity so as to enable the guide rod to slide up and down along the vertical direction.

In the embodiment, the floating ball is of an integral spherical structure, and the guide rod is of a hexagonal anti-lock structure, so that the phenomena of inflexible rotation and inaccurate positioning easily caused by a floating ball lever type structure are avoided.

According to the above embodiment, preferably, the filter screen has an array of holes, and the holes 9 are circular.

According to the above embodiment, preferably, the main exhaust port is provided with a sealing structure at a side thereof adjacent to the first float ball assembly, the sealing structure including a hard sealing assembly 10 fixed at the main exhaust port and a soft sealing assembly 11 fixed at a lower side of the hard sealing assembly. The sealing assembly is a multi-point type middle hollow sealing structure, the hard sealing assembly is a hard rubber ring or a hard alloy ring, and the soft sealing assembly is a soft rubber ring.

In this embodiment, adopt soft or hard seal structure, when the service life soft sealing washer damages for a certain period, hard sealed the effect so, has striven for the time of maintenance change soft sealing rubber circle, and double-deck seal structure's design also more does benefit to and carries out seal structure maintenance and change. Especially on long water transfer lines, large amounts of water spillage are avoided. The sealing ring structure adopts a multi-point type middle hollow sealing principle, so that the exhaust valve can achieve sealing zero leakage at low pressure (0.02MPa) better, and low-pressure leakage is avoided. The multi-point hollow structure design can avoid the phenomenon that the floating ball is locked, and the phenomenon that the floating ball cannot come down when negative pressure occurs in the pipeline is prevented.

According to the above embodiment, preferably, the hard sealing member is a hard rubber ring and the soft sealing member is an elastic rubber grid.

According to the above embodiment, preferably, the method further comprises: a dust cap 12 fixed above the main exhaust port by a bolt; the bolt is screwed into the flange at the top of the first valve body, and the tail part of the bolt is connected with a lifting ring 13.

According to the above embodiment, preferably, the method further comprises: and the water outlet 14 is arranged on the first valve body, corresponds to the columnar cavity and is used for connecting the flushing device.

The utility model discloses a working process of an integrated composite high-speed air valve, which comprises the following steps:

when the pipe is filled with gas, the floating ball descends to exhaust air, so as to raise the use efficiency of the pipeline and the water pump.

Initial state of the valve: the floating ball is positioned at the bottom of the protective cylinder, the lower end of the floating ball is provided with a guide rod, so that the sealing surface of the floating ball is always upward, and the floating ball can move up and down without hindrance and with stroke limitation under the action of vertical force.

A high-speed exhaust state: when the pipeline is filled with water and exhausted, high-speed airflow enters the valve body through the inlet at the lower part of the valve body and is exhausted into the atmosphere through the exhaust port.

Closing the sealing state: when the gas in the pipeline is basically removed, the water level rises and enters the valve body, when the floating ball is submerged, the floating ball floats upwards under the buoyancy action of water, the sealing surface of the floating ball is contacted with the rubber valve seat to form the sealing of the high-speed air inlet and outlet, the specific sealing pressure of the sealing part is increased along with the rise of the water pressure in the valve body, the valve is closed, the water and the gas cannot be discharged through the valve, and the valve is in a closed and sealed state.

A micro exhaust state: after the valve is closed, when gas is separated out from the pipeline, the gas is gradually gathered into the valve body of the auxiliary exhaust valve arranged at the local high point of the pipeline. When the cavity of the auxiliary exhaust valve is filled with water, the floating ball floats under the action of buoyancy and closes the exhaust port. During working condition operation, a small amount of air separated out from the system enters the micro-exhaust cavity through the main exhaust valve body and is collected at the exhaust port. Along with the air gathering more and more, the liquid level in the auxiliary exhaust valve cavity gradually descends, the buoyancy of the floating ball is reduced, and the floating ball falls under the action of self-generated gravity to open the exhaust port for exhausting. Along with the air in the cavity of the auxiliary exhaust valve is gradually exhausted, the liquid level rises, and the floating ball floats and closes the exhaust port. The functions of exhausting when gas exists, closing when the gas is exhausted, exhausting at intervals, exhausting only and not exhausting water are realized, and the gas in the pipeline can be exhausted to the maximum extent.

Negative pressure suction state: when the pipeline is in negative pressure due to pump stop and drainage emptying, the water level is reduced, the external air pressure is greater than the water pressure of the pipeline, the external air pressure acts on the floating ball, so that the floating ball falls due to the reduction of the water level, the high-speed air inlet and outlet is opened, and a large amount of external air can be immediately sucked to eliminate the vacuum of the pipeline. The water column separation phenomenon is eliminated, and the water hammer accident is avoided, so that the pipeline and the valve are protected from being damaged or even broken due to negative pressure.

According to the embodiment, the main exhaust port of the integrated combined high-speed air valve is integrally formed with the valve body, so that connecting gaps are reduced, and the leakage phenomenon of the exhaust port is reduced; the auxiliary exhaust valve can discharge trace gas in time under the condition of unstable water pressure, thereby reducing the automatic drainage phenomenon of the exhaust valve. The utility model effectively reduces the phenomenon of air valve leakage or abnormal drainage through the combined action of the micro exhaust structure (the auxiliary exhaust valve) and the integrated valve body structure.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated composite high speed air valve comprising:

the first valve body is provided with a spherical cavity and a cylindrical cavity which are integrally formed; the column-shaped cavity is used for being communicated with a water pipeline, the top of the spherical cavity is provided with a main exhaust port, and the inner diameter of the main exhaust port is not smaller than that of the column-shaped cavity;

the first floating ball assembly is arranged in the spherical cavity and seals the main exhaust port in a floating state;

the auxiliary exhaust valve is arranged on the side wall of the first valve body and is provided with an auxiliary exhaust port, and the auxiliary exhaust port is communicated with the outside of the first valve body;

the filter screen is integrally in a round table shape, the bottom surface of the round table is overlapped with the bottom surface of the columnar cavity, and the top of the round table is connected with the first floating ball assembly, so that liquid in the water delivery pipeline enters the spherical cavity after passing through the filter screen.

2. The integrated composite high-speed air valve according to claim 1, wherein the secondary exhaust valve comprises: the second valve body is provided with an inclined cavity and a vertical cavity, the inclined cavity is communicated with the spherical cavity, and the second floating ball assembly is arranged in the vertical cavity; the included angle between the central axis of the inclined cavity and the central axis of the spherical cavity is 45 degrees.

3. The integrated composite high speed air valve of claim 1, wherein the first float assembly specifically comprises: the ball seat is fixed in the spherical cavity to bear the floating ball, the floating ball is connected with the guide rod, and the guide rod penetrates through a guide hole of the ball seat and extends into the columnar cavity so as to enable the guide rod to slide up and down along the vertical direction.

4. The integrated composite high speed air valve of claim 1, wherein the screen has an array of holes, the holes being circular.

5. The integrated composite high speed air valve of claim 1, wherein said main exhaust port has a sealing structure adjacent to said first float ball assembly, said sealing structure comprising a hard sealing assembly and a soft sealing assembly, said hard sealing assembly being fixed at said main exhaust port and said soft sealing assembly being fixed at an underside of said hard sealing assembly.

6. The integrated composite high speed air valve of claim 5, wherein said sealing assembly is a multi-point hollow-in-the-middle sealing structure, said hard sealing assembly is a hard rubber ring, and said soft sealing assembly is a soft rubber ring.

7. The integrated composite high speed air valve of claim 5, wherein said hard seal component is a hard rubber ring and said soft seal component is an elastomeric rubber mesh.

8. The integrated composite high speed air valve of any one of claims 1 to 7, further comprising:

the dustproof cover is fixed above the main exhaust port through a bolt;

the bolt is screwed into the flange at the top of the first valve body, and the tail part of the bolt is connected with a hanging ring.

9. The integrated composite high speed air valve of any one of claims 1 to 7, further comprising:

and the water outlet is arranged on the first valve body, corresponds to the columnar cavity and is used for connecting a flushing device.