CN113090786A - One-way non-return exhaust valve - Google Patents
One-way non-return exhaust valve Download PDFInfo
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- CN113090786A CN113090786A CN202110251482.8A CN202110251482A CN113090786A CN 113090786 A CN113090786 A CN 113090786A CN 202110251482 A CN202110251482 A CN 202110251482A CN 113090786 A CN113090786 A CN 113090786A
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- air inlet
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- siphon
- sealing
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- 238000007789 sealing Methods 0.000 claims description 144
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- 239000012530 fluid Substances 0.000 abstract description 34
- 230000000694 effects Effects 0.000 abstract description 30
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- 238000000034 method Methods 0.000 description 6
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- 238000005266 casting Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 4
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000007723 die pressing method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
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- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention relates to a one-way check exhaust valve which is arranged above a siphon pipeline and comprises a valve body and a floating part, wherein a valve cavity is formed in the valve body, an exhaust port and an air inlet which are communicated with the valve cavity are formed in the valve body at intervals, and the air inlet is connected to the siphon pipeline; the floating piece is movably arranged in the valve cavity and provided with a first end close to the exhaust port and a second end close to the air inlet, when the siphon pipeline is switched from an empty pipe state to a liquid inlet state, the second end is separated from the air inlet, and the floating piece moves upwards until the first end is abutted against and seals the exhaust port; when the siphon pipeline is switched to a negative pressure state from a liquid inlet state, the first end is separated from the exhaust port, and the floating piece moves downwards until the second end is abutted to and seals the air inlet. The up-and-down movement of the floating piece can close the air outlet or the air inlet, air gathered in the valve cavity is discharged, external air is prevented from entering the siphon pipeline through the air inlet to damage the siphon effect, and the siphon pipeline can well convey fluid media.
Description
Technical Field
The invention relates to the technical field of pipeline valves, in particular to a one-way check exhaust valve.
Background
With the continuous development of social economy, the demand for the filtering equipment is increasing day by day, and due to the influence of environment and various working condition factors, a phenomenon of local gas accumulation can be formed in a water preparation pipeline of the filtering equipment. Since the gas in the pipeline is gathered to form a gas bubble to block the siphon effect, an exhaust valve is usually installed on the pipeline for exhausting gas to recover the siphon water delivery of the pipeline in order to discharge the gas gathered in the pipeline.
The exhaust valve in the prior art is generally an intake and exhaust valve, and the structure of the exhaust valve comprises a valve body, a floating ball, an exhaust port and an air inlet which are arranged on the valve body at intervals, wherein one direction is sealed, namely the exhaust port or the air inlet is sealed, the exhaust function and the air inlet function are realized, but the floating ball and the air inlet of the valve body have a gap, so that the effective sealing cannot be realized, the negative pressure formed by the siphon effect of a pipeline inhales air from the air inlet, and the siphon effect is damaged.
Disclosure of Invention
Therefore, it is necessary to provide a one-way check exhaust valve for solving the problem that the exhaust valve is easy to suck air and destroy the siphon effect of the pipeline.
The utility model provides a one-way contrary discharge valve that ends, installs in the top of siphon pipeline, includes:
the siphon valve comprises a valve body, a siphon pipeline and a siphon valve, wherein a valve cavity is formed inside the valve body, an air outlet and an air inlet which are communicated with the valve cavity are formed in the valve body at intervals, and the air inlet is connected to the siphon pipeline;
the floating piece is movably arranged in the valve cavity and provided with a first end close to the exhaust port and a second end close to the air inlet, when the siphon pipeline is switched from an empty pipe state to a liquid inlet state, the second end is separated from the air inlet, and the floating piece moves upwards until the first end is abutted against and seals the exhaust port; when siphon pipeline switches to negative pressure state from the feed liquor state, first end breaks away from the gas vent, the floating member moves down until the second end butt seals the air inlet.
The one-way check exhaust valve is arranged on the siphon pipeline and is positioned above the siphon pipeline, and when the siphon pipeline is in an empty pipe state, the second end moves downwards and seals the air inlet under the action of the gravity of the floating part. When fluid media are filled into the siphon pipeline and the siphon pipeline is switched to a liquid inlet state from an empty pipe state, air in the siphon pipeline is pressed to enter the valve cavity from the air inlet, the second end of the siphon pipeline is jacked up, and the air in the siphon pipeline is pressed to enter the valve cavity through a gap between the second end and the air inlet and is discharged through the air outlet. The siphon pipeline is communicated with the siphon pipeline, the first end seals the exhaust port, the exhaust port is closed, and the fluid medium in the siphon pipeline is prevented from overflowing out of the siphon pipeline through the exhaust port. When the siphon pipeline is filled with fluid media and the siphon pipeline conveys the fluid media to form a negative pressure effect, the fluid media in the valve cavity are sucked back into the siphon pipeline, the floating part descends to the lowest position along with the reduction of the liquid level position of the fluid media, at the moment, the siphon pipeline is switched to a negative pressure state, the first end is far away from the exhaust port, the valve cavity is communicated with the outside, the second end seals the air inlet, the air inlet is closed, external air is prevented from entering the siphon pipeline through the air inlet to damage the siphon effect, and the siphon pipeline can convey the fluid media well; and in the process that the siphon pipeline continuously conveys the fluid medium, the air in the siphon pipeline is separated from the fluid medium and is gathered into larger air bubbles at the air inlet, the air bubbles jack up the second end in a very short time and are discharged from a gap between the second end and the air inlet, and then the second end falls back and seals the air inlet, so that the siphon pipeline is restored to a negative pressure state, external air is prevented from entering the siphon pipeline through the air inlet to break a siphon effect, and the siphon pipeline can well convey the fluid medium.
In one embodiment, the float member includes a float and a sealing member, the sealing member includes a first sealing member and a second sealing member, the first sealing member is sleeved on the float and is close to the exhaust port, and the second sealing member is sleeved on the float and is close to the intake port.
In one embodiment, a first annular groove is formed in an end portion, close to the exhaust port, of the float, the first sealing element is embedded in the first annular groove, a second annular groove is formed in an end portion, close to the air inlet, of the float, and the second sealing element is embedded in the second annular groove.
In one embodiment, a top sealing surface is arranged at the end part of the valve cavity close to the exhaust port, a bottom sealing surface is arranged at the end part of the valve cavity close to the air inlet, the top sealing surface is in a gradually expanding mode along the direction towards the air inlet, the bottom sealing surface is in a gradually expanding mode along the direction towards the exhaust port, and both the top sealing surface and the bottom sealing surface are smooth surfaces.
In one embodiment, the first seal member has a first bevel parallel to the top sealing surface and the second seal member has a second bevel parallel to the bottom sealing surface, both the first and second bevels being smooth.
In one embodiment, the inclination angle between the first inclined plane and the center line of the first sealing element is 30-60 degrees, the end part close to the top sealing surface is a thin-walled soft rubber structure, the inclination angle between the second inclined plane and the center line of the second sealing element is 30-60 degrees, and the end part close to the bottom sealing surface is a thin-walled soft rubber structure.
In one embodiment, the first sealing element is further provided with a first rib adjacent to the first inclined surface, and the second sealing element is further provided with a second rib adjacent to the second inclined surface.
In one embodiment, the inner wall of the valve body is provided with guide grooves at intervals along the height direction of the valve body, and the floating piece is provided with guide ribs corresponding to the guide grooves.
In one embodiment, the float member outer wall has a clearance with the valve body inner wall.
In one embodiment, the valve body comprises a main body and a top cover, the main body and the top cover are detachably connected into a whole through threads, and a sealing ring is further arranged at the joint of the main body and the top cover.
Drawings
FIG. 1 is a structural sectional view showing a negative pressure state of a one-way check exhaust valve according to the present invention;
FIG. 2 is an enlarged view of a portion of the invention taken from circle A of FIG. 1;
FIG. 3 is a sectional view showing the structure of the one-way check exhaust valve according to the present invention in a liquid feeding state;
FIG. 4 is an enlarged view of a portion of circle B of FIG. 3 according to the present invention.
Reference numerals
100. A one-way check exhaust valve;
110. a valve body; 111. a valve cavity; 112. an exhaust port; 113. an air inlet; 114. a top sealing surface; 115. a bottom sealing surface; 116. a guide groove; 117. a main body; 118. a top cover; 119. a seal ring;
120. a float member; 121. a first end; 122. a second end; 123. a float; 124. a seal member; 125. a first seal member; 126. a second seal member; 127. a first annular groove; 128. a second annular groove; 129. a guide rib;
1251. a first inclined plane; 1252. a first reinforcing rib; 1261. a second inclined plane; 1262. and a second reinforcing rib.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The technical scheme provided by the embodiment of the invention is described below by combining the accompanying drawings.
As shown in fig. 1 and 3, the present invention provides a one-way check exhaust valve 100, the one-way check exhaust valve 100 is installed in a siphon pipe (not shown) and located above the siphon pipe, the one-way check exhaust valve 100 is used for exhausting air in the siphon pipe and preventing external air from entering the siphon pipe to destroy a siphon effect, so that the siphon pipe can better convey a fluid medium, the one-way check exhaust valve 100 includes:
the valve body 110 is internally provided with a valve cavity 111, the valve body 110 is provided with an air outlet 112 and an air inlet 113 at intervals, the air outlet 112 is communicated with the valve cavity 111, and the air inlet 113 is connected to the siphon pipeline. The valve cavity 111 may be integrally formed with the valve body 110, and at this time, the exhaust port 112 and the intake port 113 may also be integrally formed with the valve body 110; the valve cavity 111 may be formed by opening the valve body 110 after molding using a hole opening auxiliary tool, and in this case, the exhaust port 112 and the intake port 113 may be separately opened using the hole opening auxiliary tool.
The floating piece 120 is movably arranged in the valve cavity 111 and provided with a first end 121 close to the air outlet 112 and a second end 122 close to the air inlet 113, when the siphon pipeline is switched from an empty pipe state to a liquid inlet state, the second end 122 is separated from the air inlet 113, and the floating piece 120 moves upwards until the first end 121 abuts against and seals the air outlet 112; when the siphon conduit switches from the inlet state to the negative pressure state, the first end 121 disengages the exhaust port 112 and the float 120 moves down until the second end 122 abuts and seals the inlet port 113.
The one-way check exhaust valve 100 is installed on the siphon pipe and located above the siphon pipe, and when the siphon pipe is in an empty pipe state, the second end 122 moves downwards and seals the air inlet 113 under the action of the gravity of the floating member 120. When the siphon pipe is filled with the fluid medium and is switched from an empty pipe state to a liquid inlet state, air in the siphon pipe enters the valve cavity 111 from the air inlet 113 under pressure, the second end 122 is jacked up, and the air in the siphon pipe enters the valve cavity 111 through a gap between the second end 122 and the air inlet 113 under pressure and is discharged through the air outlet 112. As the air in the siphon pipe is continuously discharged until the air is completely discharged, the fluid medium enters the valve cavity 111 through the air inlet 113, the floating member 120 floats upwards under the buoyancy of the fluid medium, the second end 122 leaves the air inlet 113, the first end 121 moves towards the air outlet 112 to the highest position, at this time, the siphon pipe is filled with the fluid medium, the second end 122 is far away from the air inlet 113, the valve cavity 111 is communicated with the siphon pipe, the first end 121 seals the air outlet 112, the air outlet 112 is closed, and the fluid medium in the siphon pipe is prevented from overflowing out of the siphon pipe through the air outlet 112. When the siphon pipeline is filled with fluid media and the siphon pipeline conveys the fluid media to form a negative pressure effect, the fluid media in the valve cavity 111 are sucked back into the siphon pipeline, the floating piece 120 descends to the lowest position along with the reduction of the liquid level position of the fluid media, at the moment, the siphon pipeline is switched to a negative pressure state, the first end 121 is far away from the exhaust port 112, the valve cavity 111 is communicated with the outside, the second end 122 seals the air inlet 113, the air inlet 113 is closed, external air is prevented from entering the siphon pipeline through the air inlet 113 to damage the siphon effect, and the siphon pipeline can convey the fluid media better; and in the process of continuously conveying the fluid medium through the siphon pipeline, the air in the siphon pipeline is separated from the fluid medium and is gathered into larger air bubbles at the air inlet 113, the air bubbles lift the second end 122 in a very short time and are discharged from a gap between the second end 122 and the air inlet 113, then the second end 122 falls back and seals the air inlet 113, so that the siphon pipeline is restored to a negative pressure state, the external air is prevented from entering the siphon pipeline through the air inlet 113 to break the siphon effect, and the siphon pipeline can well convey the fluid medium.
In order to avoid a gap between the first end 121 and the second end 122 when sealing the air outlet 112 and the air inlet 113, in a preferred embodiment, as shown in fig. 1 and 3, the floating member 120 includes a float 123 and a sealing member 124, the sealing member 124 includes a first sealing member 125 and a second sealing member 126, the first sealing member 125 is sleeved on the float 123 and is close to the air outlet 112, and the second sealing member 126 is sleeved on the float 123 and is close to the air inlet 113. Although the sealing member 124 is sleeved on the float 123 in the above preferred embodiment, when the material used for the float 123 and the material used for the sealing member 124 are the same, the sealing member 124 and the float 123 may be integrally formed by injection, molding, casting, etc., so as to avoid the sealing member 124 from falling off the float 123 after being deformed by pressure for a long time, and to reduce the number of forming processes. It should be noted that the maximum diameter of the floating member 120 is not smaller than the diameter of the air inlet 113, so as to avoid that when the floating member 120 moves down until abutting against the air inlet 113, a gap exists between the matching surfaces of the floating member 120 and the air inlet 113, or the floating member 120 falls into the air inlet 113 and even breaks away from the air inlet 113, and cannot completely seal the air inlet 113, resulting in sealing failure.
Above-mentioned one-way contrary discharge valve 100, through on the float 123 and be close to the gas vent 112 cover and establish first sealing member 125, be full of fluid medium in the siphon pipeline, fluid medium enters into the valve body 110 through air inlet 113, first end 121 moves until the highest position towards gas vent 112, the first sealing member 125 butt and the sealed gas vent 112 on the float 123 are established to the cover, sealed effect is better, can avoid the fluid medium of the inside of valve pocket 111 to overflow the seepage to the outside through first end 121 and gas vent 112 clearance department on the one hand, on the other hand can avoid outside air to be inhaled the inside siphon effect of destroying of valve pocket 111 through first end 121 and gas vent 112 clearance department. Through on the float 123 and be close to the air inlet 113 cover and establish second sealing member 126, when siphon pipeline was in negative pressure state, the second sealing member 126 butt and the sealed air inlet 113 on the float 123 were located to the cover, and sealed effect is better, prevents that outside air from being inhaled siphon pipeline inside destruction siphon effect through second end 122 and air inlet 113 clearance department.
To prevent the sealing element 124 from falling off from the float 123 after being deformed by pressure for a long time, specifically, as shown in fig. 1, 2, 3 and 4, a first annular groove 127 is formed at an end portion of the float 123 close to the exhaust port 112, the first sealing element 125 is embedded in the first annular groove 127, a second annular groove 128 is formed at an end portion of the float 123 close to the air inlet 113, and the second sealing element 126 is embedded in the second annular groove 128. The first sealing element 125 is embedded in the first annular groove 127, and the second sealing element 126 is embedded in the second annular groove 128, so as to fix the sealing element 124, and prevent the sealing element 124 from falling off from the float 123 after being deformed under pressure for a long time, so that the first sealing element 125 cannot completely seal the exhaust port 112, and the second sealing element 126 cannot completely seal the intake port 113, and thus the sealing element fails.
In order to make the first sealing element 125 and the second sealing element 126 more easily abut and seal the exhaust port 112 and the intake port 113, specifically, as shown in fig. 1 and 3, a top sealing surface 114 is disposed at an end of the valve cavity 111 close to the exhaust port 112, a bottom sealing surface 115 is disposed at an end of the valve cavity 111 close to the intake port 113, the top sealing surface 114 is divergent in a direction toward the intake port 113, the bottom sealing surface 115 is divergent in a direction toward the exhaust port 112, and both the top sealing surface 114 and the bottom sealing surface 115 are smooth surfaces.
In the one-way check exhaust valve 100, the top sealing surface 114 and the bottom sealing surface 115 are arranged in the valve cavity 111, and the top sealing surface 114 and the bottom sealing surface 115 are in a gradually expanding type, when the siphon pipe is filled with fluid media, the fluid media enters the valve body 110 through the air inlet 113, and the first end 121 moves towards the exhaust port 112 to the highest position, the first sealing element 125 sleeved on the float 123 is more easily abutted against the top sealing surface 114 to seal the exhaust port 112; when the siphon pipe is in a negative pressure state, the second sealing member 126 sleeved on the float 123 is more likely to abut against the bottom sealing surface 115 to seal the air inlet 113.
To enhance the sealing effect of seal 124, more specifically, as shown in FIGS. 2 and 4, first seal 125 has a first slope 1251 parallel to top seal surface 114, second seal 126 has a second slope 1261 parallel to bottom seal surface 115, and first slope 1251 and second slope 1261 are both smooth. When the hardness of the sealing member 124 is high, the amount of deformation under pressure is small, and when the first inclined surface 1251 is parallel to the top sealing surface 114, the first inclined surface 1251 and the top sealing surface 114 can realize surface-to-surface contact sealing, and the sealing effect is good. Similarly, when the second inclined surface 1261 is parallel to the bottom sealing surface 115, the second inclined surface 1261 and the bottom sealing surface 115 can also achieve surface-to-surface contact sealing, and the sealing effect is good.
In order to further improve the sealing effect of the sealing member 124, as shown in fig. 2 and 4, the inclination angle between the first inclined surface 1251 and the center line of the first sealing member 125 is 30 ° to 60 °, the first sealing member 125 is more easily abutted against the top sealing surface 114, the inclination angle between the second inclined surface 1261 and the center line of the second sealing member 126 is 30 ° to 60 °, and the second sealing member 126 is more easily abutted against the bottom sealing surface 115; and the end part of the first sealing element 125 close to the top sealing surface 114 is a thin-walled soft rubber structure, the end part of the second sealing element 126 close to the bottom sealing surface 115 is a thin-walled soft rubber structure, when the first sealing element 125 abuts against the top sealing surface 114 and the second sealing element 126 abuts against the bottom sealing surface 115, the deformation after being pressed is larger, the first sealing element 125 is attached to the top sealing surface 114 more tightly, and the second sealing element 126 is also attached to the bottom sealing surface 115 more tightly, so that a better sealing effect is achieved. In a specific arrangement, the inclination angle of the first inclined surface 1251 with respect to the center line of the first seal 125 may be one or more of 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, and 60 °, and the inclination angle of the second inclined surface 1261 with respect to the center line of the second seal 126 may be one or more of 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, and 60 °, although the inclination angle of the first inclined surface 1251 with respect to the center line of the first seal 125 and the inclination angle of the second inclined surface 1261 with respect to the center line of the second seal 126 are not limited to the above range, and may be other values within the range of 30 ° to 60 °. In the case where the sealing effect of the seal 124 is not required to be high, the inclination angle between the first inclined surface 1251 and the center line of the first seal 125 and the inclination angle between the second inclined surface 1261 and the center line of the second seal 126 may be set to values outside the range of 30 ° to 60 °. In addition, the first sealing element 125 and the second sealing element 126 are both made of flexible materials, including one or more of rubber, silicone, latex, and plastic, and the flexible materials have a large deformation amount after being pressed, so that the sealing effect of the first sealing element 125 abutting against the top sealing surface 114 and the second sealing element 126 abutting against the bottom sealing surface 115 is also good. Of course, the specific materials for the first sealing member 125 and the second sealing member 126 are not limited to the four materials provided in the above preferred embodiments, and other materials with flexibility, such as TPE (thermoplastic elastomer), EPDM (ethylene propylene diene monomer), etc., may be used, and the specific materials for the first sealing member 125 and the second sealing member 126 are not limited by the present invention.
In order to prevent the seal 124 from being damaged and hardly recovering due to an excessive deformation amount after the compression deformation, as shown in fig. 2 and 4, the first seal 125 is further provided with a first rib 1252 near the first inclined surface 1251, and the second seal 126 is also provided with a second rib 1262 near the second inclined surface 1261. The first reinforcing rib 1252 has a supporting effect on the deformed and bent first inclined surface 1251, so that the phenomenon that the first sealing element 125 is too large in deformation and cannot recover after pressure disappears and cannot be effectively sealed in a subsequent movement process, a gap exists when the first sealing element 125 abuts against the top sealing surface 114, a fluid medium inside the valve cavity 111 overflows and leaks to the outside through the gap, and external air can be sucked into the valve cavity 111 through the gap to destroy a siphon effect is avoided. Similarly, the second reinforcing rib 1262 has a supporting effect on the deformed and bent second inclined surface 1261, so that the phenomenon that the second sealing element 126 is too large in deformation amount after deformation, cannot be restored after pressure disappears, and cannot be effectively sealed in a subsequent movement process, a gap exists when the second sealing element 126 abuts against the bottom sealing surface 115, and external air can be sucked into the siphon pipeline through the gap to destroy the siphon effect.
In order to define the floating path of the floating member 120, in a preferred embodiment, as shown in fig. 1 and 3, guide grooves 116 are provided at intervals along the height direction of the inner wall of the valve body 110, and guide ribs 129 corresponding to the guide grooves 116 are provided on the floating member 120. The guide groove 116 may be integrally formed with the valve body 110 by casting, stamping, casting, or the like, or may be additionally opened by a grooving auxiliary tool after the valve body 110 is formed; similarly, the guide rib 129 may be integrally formed with the float member 120 by injection molding, die pressing, casting, or the like, or may be formed by injection molding, die pressing, casting, or the like separately after the float member 120 is formed.
In the one-way check exhaust valve 100, when the floating member 120 floats up and down in the valve cavity 111 along the height direction thereof, the guide rib 129 arranged on the floating member 120 is matched with the guide groove 116 on the inner wall of the valve body 110 to limit the floating member 120 to float along a specific path, so that the floating member 120 is prevented from floating freely in the valve cavity 111 and being incapable of being accurately attached to the top sealing surface 114 or the bottom sealing surface 115, and therefore the exhaust port 112 or the air inlet 113 cannot be closed, so that a fluid medium in a pipeline overflows and leaks to the outside through a gap between the exhaust port 112 and the floating member 120, or external air enters a siphon pipeline through a gap between the air inlet 113 and the floating member 120 to destroy the siphon effect. Of course, the fixing manner of the floating member 120 and the valve body 110 is not limited to the cooperation of the guide groove 116 and the guide rib 129 provided in the above preferred embodiment, and may also be a cooperation manner of a slide rail and a slide block, where the slide rail is provided at intervals along the height direction of the inner wall of the valve body 110, the slide block is correspondingly provided on the floating member 120, and the floating path of the floating member 120 is defined by the cooperation of the slide rail and the slide block. The invention is not limited with respect to the particular manner in which the float member 120 is secured to the valve body 110.
To vent air that has collected inside the valve chamber 111, in a preferred embodiment, the float member 120 has a clearance between the outer wall and the inner wall of the valve body 110. Specifically, when the sliding fit surface of the guide rib 129 and the guide groove 116 has a gap, it is not necessary to additionally provide a gap at another place; when the guide rib 129 is tightly fitted with the guide groove 116 without leaving a gap, a groove may be formed in the float member 120 or the valve body 110 to form a gap; however, if the float 120 is movably arranged inside the valve chamber 111, a clearance is present, and it is not necessary to provide a clearance again. When the siphon pipeline is switched from an empty pipe state to a liquid inlet state, air in the siphon pipeline enters the valve cavity 111 from the air inlet 113 under pressure and is collected, and the air collected in the valve cavity 111 is prevented from damaging the siphon effect by discharging the air to the outside through the air outlet 112 through a gap reserved between the outer wall of the floating piece 120 and the inner wall of the valve body 110. And when the siphon pipeline is in a negative pressure state, in the process of continuously conveying the fluid medium, the air in the siphon pipeline is separated from the fluid medium, is discharged through the gap between the second end 122 and the air inlet 113, is collected in the valve cavity 111, and is discharged to the outside through the gap reserved between the outer wall of the floating member 120 and the inner wall of the valve body 110 through the air outlet 112, so that the siphon effect is prevented from being damaged by the air collected in the valve cavity 111.
In order to facilitate replacement of the valve body 110, as shown in fig. 1 and 3, in a preferred embodiment, the valve body 110 includes a main body 117 and a top cover 118, the main body 117 and the top cover 118 are detachably connected into a whole through a thread, on one hand, the sealing effect of the threads which are matched with each other is good, and on the other hand, when one part of the main body 117 or the top cover 118 is damaged, the disassembly and replacement are facilitated; and a sealing ring 119 is further arranged at the joint of the main body 117 and the top cover 118 to prevent external air from entering the valve cavity 111 through the gap at the joint and destroying the siphon effect in the siphon pipeline. Of course, the connection mode between the main body 117 and the top cover 118 is not limited to the threaded connection provided in the above preferred embodiment, and may also be other connection modes that can detachably connect the main body 117 and the top cover 118, such as clamping, welding, and the like, and the specific connection mode between the main body 117 and the top cover 118 is not limited in the present invention.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a one-way contrary discharge valve that ends, installs in the top of siphon pipeline, its characterized in that includes:
the siphon valve comprises a valve body, a siphon pipeline and a siphon valve, wherein a valve cavity is formed inside the valve body, an air outlet and an air inlet which are communicated with the valve cavity are formed in the valve body at intervals, and the air inlet is connected to the siphon pipeline;
the floating piece is movably arranged in the valve cavity and provided with a first end close to the exhaust port and a second end close to the air inlet, when the siphon pipeline is switched from an empty pipe state to a liquid inlet state, the second end is separated from the air inlet, and the floating piece moves upwards until the first end is abutted against and seals the exhaust port; when siphon pipeline switches to negative pressure state from the feed liquor state, first end breaks away from the gas vent, the floating member moves down until the second end butt seals the air inlet.
2. The one-way check exhaust valve according to claim 1, wherein the floating member includes a float and a sealing member, the sealing member includes a first sealing member and a second sealing member, the first sealing member is sleeved on the float and is close to the exhaust port, and the second sealing member is sleeved on the float and is close to the intake port.
3. The one-way check exhaust valve according to claim 2, wherein a first annular groove is formed in an end portion of the float close to the exhaust port, the first sealing member is embedded in the first annular groove, a second annular groove is formed in an end portion of the float close to the air inlet, and the second sealing member is embedded in the second annular groove.
4. The one-way check exhaust valve according to claim 2, wherein the end of the valve chamber close to the exhaust port is provided with a top sealing surface, the end of the valve chamber close to the air inlet is provided with a bottom sealing surface, the top sealing surface is gradually expanded along the direction toward the air inlet, the bottom sealing surface is gradually expanded along the direction toward the exhaust port, and both the top sealing surface and the bottom sealing surface are smooth surfaces.
5. The one-way check exhaust valve of claim 4 wherein said first seal member has a first slope parallel to said top sealing surface and said second seal member has a second slope parallel to said bottom sealing surface, said first slope and said second slope being smooth.
6. The one-way check exhaust valve according to claim 5, wherein an inclination angle between the first inclined plane and a center line of the first sealing member is 30-60 °, an end portion close to the top sealing surface is a thin-walled soft rubber structure, an inclination angle between the second inclined plane and a center line of the second sealing member is 30-60 °, and an end portion close to the bottom sealing surface is a thin-walled soft rubber structure.
7. The one-way check exhaust valve of claim 6, wherein the first sealing element is further provided with a first rib adjacent to the first inclined surface, and the second sealing element is further provided with a second rib adjacent to the second inclined surface.
8. The one-way non-return exhaust valve according to claim 1, characterized in that the inner wall of the valve body is provided with guide grooves at intervals along the height direction thereof, and the floating member is provided with guide ribs corresponding to the guide grooves.
9. The one-way check exhaust valve of claim 1, wherein the outer wall of the float member has a clearance with the inner wall of the valve body.
10. The one-way non-return exhaust valve according to claim 1, wherein the valve body comprises a main body and a top cover, the main body and the top cover are detachably connected into a whole through threads, and a sealing ring is further arranged at the joint of the main body and the top cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110251482.8A CN113090786A (en) | 2021-03-08 | 2021-03-08 | One-way non-return exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110251482.8A CN113090786A (en) | 2021-03-08 | 2021-03-08 | One-way non-return exhaust valve |
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| Publication Number | Publication Date |
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| CN113090786A true CN113090786A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110251482.8A Pending CN113090786A (en) | 2021-03-08 | 2021-03-08 | One-way non-return exhaust valve |
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| JP2017198253A (en) * | 2016-04-26 | 2017-11-02 | Nok株式会社 | Sealing device |
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| CN2044029U (en) * | 1988-11-09 | 1989-09-06 | 王明晨 | Discharge valve driven by float |
| JPH06506169A (en) * | 1991-08-28 | 1994-07-14 | ロバート ボッシュ テクノロジイ コーポレイション | Threaded proportional valve with vent |
| JPH09317586A (en) * | 1996-05-29 | 1997-12-09 | Nok Corp | Liquid cut-off valve device |
| CN201014003Y (en) * | 2007-03-05 | 2008-01-30 | 王宁 | Automatic regulation float ball valve |
| US20140027984A1 (en) * | 2012-01-19 | 2014-01-30 | Flowserve Management Company | Abeyance Seal for High Temperature, High Pressure Applications |
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