CN211715896U

CN211715896U - Air valve for preventing low pressure leakage

Info

Publication number: CN211715896U
Application number: CN201922281876.9U
Authority: CN
Inventors: 谢科; 廖志芳; 蒋劲; 丁昌斌; 常永红; 王东辉; 王广; 刘娜; 韩宁
Original assignee: Bensv Valve Stock Co ltd
Current assignee: Bensv Valve Stock Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-20
Anticipated expiration: 2029-12-18

Abstract

The utility model provides a prevent low pressure leakage air valve belongs to the valve field, including valve body, floater and valve gap, the valve gap sets firmly the upper end at the valve body, and the floater is established in the inside and the fluctuation of valve body and valve gap, and the lower extreme of valve gap inlays and is equipped with the sealing washer that corresponds with the floater, and the upper end of floater is the plane, and the upper end of floater has set firmly the seal receptacle, and one side that the sealing washer was kept away from to the seal receptacle inlays and is equipped with first magnet piece, and one side that the seal receptacle was kept away from to the sealing washer inlays and is equipped with the second magnet piece, and first magnet piece. The utility model discloses under the assurance exhaust effect condition, use magnetic force as the pretightning force, guarantee the sealed effect of low pressure, the emergency degree that can intelligent recognition air valve leak moreover makes things convenient for the maintenance work personnel to arrange.

Description

Air valve for preventing low pressure leakage

Technical Field

The utility model belongs to the valve field relates to prevent low pressure leakage air valve.

Background

The combined air inlet and exhaust valve is an air valve for short, is widely used for long-distance water conveying pipelines and urban water supply network systems, has the functions of introducing water for the first time and exhausting a large amount of air, exhausting the air under pressure when the pipelines operate, and sucking a large amount of negative pressure in the pipelines, and plays an important role in protecting water-filling water hammers, bridging water hammers, negative pressure water hammers and the like in the pipelines.

Because the air valve is communicated with the atmosphere, the leakage of the pipeline is caused by the leakage of the air valve, if the serious consequences such as damage to farmlands and the like can be caused if the leakage of the pipeline is not found in time, a certain resource waste can be caused, but the sealing of the air valve depends on hydraulic sealing, the air valve at the present stage cannot be completely sealed under the condition of low pressure, the number of the air valves used in the engineering is large, the air valves are often installed in remote areas or valve wells, and the site has no power supply, so the inspection of the air valve is often carried out through manual inspection, the manual inspection is time-consuming and labor-consuming, the leakage of the air valve cannot be found in time, and the serious consequences can be generated when.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a prevent low pressure leakage air valve, guarantee under the exhaust effect condition, use magnetic force as the pretightning force, guarantee the effect of low pressure seal, moreover can intelligent recognition air valve leakage's emergency degree, make things convenient for the maintenance work personnel to arrange.

In order to solve the technical problem, the utility model discloses a technical scheme is: the air valve for preventing low-pressure leakage comprises a valve body, a floating ball and a valve cover, wherein the valve cover is fixedly arranged at the upper end of the valve body, the floating ball is arranged in the valve body and the valve cover and floats up and down, and a sealing ring corresponding to the floating ball is embedded at the lower end of the valve cover;

the upper end of floater is the plane, the upper end of floater has set firmly the seal receptacle, the seal receptacle is kept away from one side of sealing washer is inlayed and is equipped with first magnet piece, the sealing washer is kept away from one side of seal receptacle is inlayed and is equipped with the second magnet piece, first magnet piece and second magnet piece correspond the setting from top to bottom.

Furthermore, first magnet piece and second magnet piece are the loop configuration, the outer lane of first magnet piece is equipped with first sealing ring, the outer lane of second magnet piece is equipped with the second sealing ring, the inner circle of second magnet piece is equipped with the third sealing ring.

Furthermore, one side of the sealing seat close to the sealing ring is provided with a fourth sealing ring, and the number of the fourth sealing rings is two and the two are arranged in parallel with the same axis.

Furthermore, the sealing ring is fixedly locked on the valve cover through a screw, the sealing seat is fixedly locked on the upper end face of the floating ball through a screw, and the inner wall of the valve body is provided with a guide rib for guiding the floating ball to ascend and descend vertically.

Furthermore, the inside lower extreme of valve body is equipped with the bracket that corresponds with the floater, the bracket is bowl-shaped structure, the floater with the coaxial setting of bracket, the below of floater is equipped with the guide post that stretches into the bracket.

Further, the upper end of valve gap is erect and is equipped with rain-proof lid, the upper end of rain-proof lid is the downward cell type structure of opening and the up end is the arch, the cross-section of rain-proof lid is greater than the opening setting of sealing washer.

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

Furthermore, a micro exhaust valve is communicated with the lower end of the valve body, two third leakage sensors which are arranged at the same height are arranged at the air outlet end of the micro exhaust valve, and the third leakage sensors are electrically connected with the alarm unit.

Furthermore, two second leakage sensors and two first leakage sensors are sequentially arranged at the upper end of the valve cover from top to bottom, the two first leakage sensors are arranged at the same height, and the two second leakage sensors are arranged at the same height.

Furthermore, a filter screen is arranged at the inlet of the lower end of the valve body and fixedly arranged in the valve body through a buckle.

Compared with the prior art, the utility model has the advantages and positive effect as follows.

1. The utility model is provided with the first magnet block and the second magnet block, magnetic force is used as pretightening force, the effect of low-pressure sealing is ensured, after the floating ball falls down, because the first magnet block and the second magnet block are far away, the attraction force to the floating ball is small, and the influence on the air exhaust of the air valve is avoided;

2. the battery is used as a power supply, so that the power supply is convenient to source and is not limited by weather and installation positions, and the cost is low; the awakening mode is used, so that the energy consumption is low, and the battery does not need to be frequently replaced;

3. set up first leakage sensor, second leakage sensor and third leakage sensor, the water spray working condition when this structure can discern the air valve and just finish the exhaust prevents the alert emergence of wrong report, has improved alarm signal's accuracy, and the emergency degree that intelligent recognition air valve leaked makes things convenient for maintenance personnel to arrange.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a cross-sectional view of the low pressure leak prevention air valve of the present invention;

FIG. 2 is a detailed view of section A of FIG. 1 in accordance with the present invention;

FIG. 3 is a detailed view of section B of FIG. 1 in accordance with the present invention;

figure 4 is a detailed view of section C of figure 1 of the present invention;

fig. 5 is a detailed view of the portion D of fig. 1 according to the present invention.

Reference numerals:

1. a valve body; 11. a guide rib; 12. a bracket; 2. a valve cover; 3. a floating ball; 31. a guide post; 4. an insect-proof net; 5. a rain cover; 6. a sealing seat; 61. a first magnet block; 62. a first seal ring; 63. a fourth seal ring; 7. a seal ring; 71. a second magnet block; 72. a second seal ring; 73. a third seal ring; 8. a filter screen; 81. buckling; 9. a micro exhaust valve; 91. a shield; 92. a third leak sensor; 93. an air outlet; 20. a second leak sensor; 30. a first leak sensor.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

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 the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not 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.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1-5, the utility model relates to a low-pressure leakage prevention air valve, which comprises a valve body 1, a floating ball 3 and a valve cover 2, wherein the valve cover 2 is fixedly arranged at the upper end of the valve body 1, the floating ball 3 is arranged inside the valve body 1 and the valve cover 2 and floats up and down, and a sealing ring 7 corresponding to the floating ball 3 is embedded at the lower end of the valve cover 2;

the upper end of the floating ball 3 is a plane, the upper end of the floating ball 3 is fixedly provided with a sealing seat 6, one side of the sealing seat 6, which is far away from the sealing ring 7, is embedded with a first magnet block 61, one side of the sealing ring 7, which is far away from the sealing seat 6, is embedded with a second magnet block 71, and the first magnet block 61 and the second magnet block 71 are arranged in a vertically corresponding manner; preferably, the first magnet block 61 and the second magnet block 71 are both of an annular structure, the outer ring of the first magnet block 61 is provided with the first sealing ring 62, the outer ring of the second magnet block 71 is provided with the second sealing ring 72, the inner ring of the second magnet block 71 is provided with the third sealing ring 73, and the arrangement of the first sealing ring 62, the second sealing ring 72 and the third sealing ring 73 ensures that the first magnet block 61 and the second magnet block 71 avoid contact with water, thereby ensuring the service life of the first magnet block 61 and the second magnet block 71.

Preferably, one side of the sealing seat 6 close to the sealing ring 7 is provided with two fourth sealing rings 63, and the two fourth sealing rings 63 are coaxially and parallelly arranged, and the sealing performance between the sealing ring 7 and the sealing seat 6 is improved by the provided fourth sealing rings 63.

Preferably, the sealing ring 7 is fixedly locked on the valve cover 2 through a screw, the sealing seat 6 is fixedly locked on the upper end surface of the floating ball 3 through a screw, the inner wall of the valve body 1 is provided with a guide rib 11 for guiding the floating ball 3 to ascend and descend vertically, and the arrangement of the guide rib 11 further limits the vertical movement precision of the floating ball 3; more preferably, the inside lower extreme of valve body 1 is equipped with the bracket 12 that corresponds with floater 3, and bracket 12 is bowl structure, and floater 3 and the coaxial setting of bracket 12, the below of floater 3 is equipped with the guide post 31 that stretches into bracket 12, can carry out the water conservancy diversion to the medium for medium transmission is more balanced, and the guide post 31 of setting has promoted the precision of floater 3 motion, guarantees that floater 3 can be at vertical direction motion, promotes sealed precision.

Preferably, the upper end of the valve cover 2 is provided with the rain cover 5, the upper end of the rain cover 5 is of a groove-shaped structure with a downward opening, the upper end surface of the rain cover 5 is arched, the cross section of the rain cover 5 is larger than the opening of the sealing ring 7, so that the entry of external unclean water or other media or sundries is effectively prevented, the probability of blockage is reduced, and the service life of the structure is prolonged; preferably, be equipped with insect-proof net 4 between rain-proof lid 5 and the valve gap 2, prevent that winged insect etc. from flying into, further guaranteed the inside cleanliness factor of air valve, promoted the life of structure to a certain extent.

Preferably, the lower end of the valve body 1 is communicated with a micro exhaust valve 9, the air outlet end of the micro exhaust valve 9 is provided with two third leakage sensors 92 which are arranged at the same height, the third leakage sensors 92 are electrically connected with the alarm unit, signals can be received and fed back in time, real-time monitoring is facilitated, subsequent maintenance is facilitated, and the maintenance cost is reduced; more preferably, a shield 91 is provided outside the third leak sensor 92, an air outlet hole 93 is provided on the shield 91, and the third leak sensor 92 is provided on an inner wall of the shield 91.

Preferably, two second leakage sensors 20 and two first leakage sensors 30 are sequentially arranged at the upper end of the valve cover 2 from top to bottom, the two first leakage sensors 30 are arranged at the same height, the two second leakage sensors 20 are arranged at the same height, and the arranged first leakage sensors 30 and the second leakage sensors 20 can monitor different leakage degrees, so that the reliability of the whole structure is improved.

Preferably, the lower extreme entrance of valve body 1 is equipped with filter screen 8, and filter screen 8 sets firmly in valve body 1 through buckle 81, can prevent that impurity such as leaf, clod from entering into inside valve body 1, promotes the purity degree of medium, has reduced the dead probability of structure card, has prolonged the life of structure.

In the actual working process, during low pressure sealing, the second magnet block 71 is embedded in the sealing ring 7, the first magnet block 61 is arranged in the sealing seat 6, when the floating ball 3 upwards moves to the valve to be closed due to the buoyancy of water, the first magnet block 61 and the second magnet block 71 attract each other to provide a pretightening force, and the valve is ensured to be watertight under low pressure or even zero pressure.

The water leakage fault alarming process is as follows, a battery can be used as a power supply in the alarming unit, the timing module, the communication module and the control module in the alarming unit are normally in a dormant state when the air valve normally operates, the power consumption is low, all the modules are modules existing in the market, and can be directly purchased from an online sales channel, and the existing modules can be realized.

When the main valve of the air valve leaks, leaked water can be gathered in the cylindrical cavity at the upper part of the valve cover 2, when the water level rises to the horizontal position of the first leakage sensor, the contact is connected, the first leakage sensor changes the state, and the first leakage sensor is turned on when the first leakage sensor is turned off, and the timing module is awakened at the moment, and when the water level is in the position for more than t1, the communication module is awakened, and a leakage alarm signal is sent to the mobile phone through a wireless signal;

when the water level rises to the horizontal position of the second leakage sensor 20 within t1, the second leakage sensor 20 is switched on, the second leakage sensor 20 changes state, and when the second leakage sensor 20 is switched on, the communication module is awakened, and a water leakage alarm signal is sent to the mobile phone through a wireless signal, so that the mobile phone is in a serious leakage state; the timing module is awakened after the second leakage sensor 20 is switched to the on state, when the water level is in the position B for more than t2, the communication module is awakened, and an alarm signal is sent to the mobile phone through a wireless signal;

when the air valve finishes exhausting, certain water can be sprayed outwards when the valve is closed, if the sprayed water is splashed to the first leakage sensor 30, the second leakage sensor 20 or the third leakage sensor 92, the sprayed water cannot reach the level of the first leakage sensor or the second leakage sensor, the first leakage sensor, the second leakage sensor 20 or the third leakage sensor 92 cannot be switched on, the timer cannot be awakened, signals are prevented from being sent by mistake, the accuracy of alarming is improved, when the battery power is insufficient, the communication module is awakened, and the alarm signal for power shortage is sent to the mobile phone through wireless signals.

The whole structure uses magnetic force as pretightening force to ensure the effect of low-pressure sealing, and after the floating ball 3 falls down, the first magnet block 61 and the second magnet block 71 are far away from each other, so that the attraction force on the floating ball 3 is small, and the influence on the air exhaust of the air valve is avoided; in addition, the battery is used as a power supply, so that the power supply is convenient to source and is not limited by weather and installation positions, and the cost is low; the awakening mode is used, so that the energy consumption is low, and the battery does not need to be frequently replaced; and this structure can discern the air valve and just finish the water spray work condition when exhausting, prevents the emergence of wrong report alarm, has improved alarm signal's accuracy, and the emergency degree of intelligent recognition air valve leakage makes things convenient for maintenance work personnel to arrange.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. Prevent low pressure leakage air valve, its characterized in that: the floating ball type water-saving valve comprises a valve body, a floating ball and a valve cover, wherein the valve cover is fixedly arranged at the upper end of the valve body, the floating ball is arranged in the valve body and the valve cover and floats up and down, and a sealing ring corresponding to the floating ball is embedded at the lower end of the valve cover;

2. The low pressure leakage preventing air valve according to claim 1, wherein: the first magnet piece and the second magnet piece are of annular structures, the outer ring of the first magnet piece is provided with a first sealing ring, the outer ring of the second magnet piece is provided with a second sealing ring, and the inner ring of the second magnet piece is provided with a third sealing ring.

3. The low pressure leakage preventing air valve according to claim 1, wherein: one side that the seal receptacle is close to the sealing washer is equipped with the fourth sealing ring, and the quantity of fourth sealing ring is two and the two sets of axle center parallel arrangement.

4. The low pressure leakage preventing air valve according to claim 1, wherein: the sealing ring is fixedly locked on the valve cover through a screw, the sealing seat is fixedly locked on the upper end face of the floating ball through a screw, and the inner wall of the valve body is provided with a guide rib for guiding the floating ball to ascend and descend.

5. The low pressure leakage preventing air valve according to claim 1, wherein: the lower extreme in the inside of valve body is equipped with the bracket that corresponds with the floater, the bracket is bowl form structure, the floater with the coaxial setting of bracket, the below of floater is equipped with and stretches into the guide post of bracket.

6. The low pressure leakage preventing air valve according to claim 1, wherein: the upper end of valve gap erects and is equipped with rain-proof lid, the upper end of rain-proof lid is opening decurrent cell type structure and up end and is the arch, the cross-section of rain-proof lid is greater than the opening setting of sealing washer.

7. The low pressure leakage preventing air valve according to claim 6, wherein: an insect-proof net is arranged between the rain-proof cover and the valve cover.

8. The low pressure leakage preventing air valve according to claim 1, wherein: the lower end of the valve body is communicated with a micro exhaust valve, two third leakage sensors which are arranged at the same height are arranged at the air outlet end of the micro exhaust valve, and the third leakage sensors are electrically connected with the alarm unit.

9. The low pressure leakage preventing air valve according to claim 1, wherein: two second leakage sensors and two first leakage sensors are sequentially arranged at the upper end of the valve cover from top to bottom, the two first leakage sensors are arranged at the same height, and the two second leakage sensors are arranged at the same height.

10. The low pressure leakage preventing air valve according to claim 1, wherein: the lower extreme entrance of valve body is equipped with the filter screen, the filter screen sets firmly through the buckle in the valve body.