A rotary inflation valve for oil boom

Abstract

A rotary inflation valve for an oil boom, wherein the upper surface of a valve cover is completely covered by an upper rubber sleeve (2) and a threaded hole is opened in the middle; the rotary valve core is cylindrical and has a flange on the upper end surface; three grooves (7) evenly distributed along the circumference are provided on the outer wall of the rotary valve core, the grooves include an inclined portion and a straight portion, the lower edge of the inclined portion has a gentler slope than the upper edge, the straight portion is above the inclined portion, and a protrusion is provided above the junction of the straight portion and the inclined portion; the outer wall of the protrusion of the valve body has a thread that matches the threaded hole of the valve cover, a through hole is provided in the middle of the protrusion, the flange of the rotary valve core is clamped between the upper and lower parts of the through hole, and three first positioning protrusions (10) evenly distributed along the circumference are provided at the lower part of the through hole, each of the first positioning protrusions is provided with a pin that moves in a groove, and the lower rubber sleeve (12) partially covers the bottom end surface of the valve body and exposes the periphery of the bottom end surface.

Description

Technical Field

[0001] The invention relates to the technical field of water surface pollution cleaning, and in particular to a rotary inflation valve for an oil boom, which is mainly used for inflating and deflation of an air chamber of an inflatable oil boom. Background Art

[0002] As the demand for petrochemical products continues to increase, the threat of oil spills has gradually become a major threat to the marine environment. In order to deal with the threat of oil spills, a series of emergency treatment equipment has been developed. Among the many oil spill emergency equipment, the oil boom is the most basic and most common equipment. Its main function is to contain the oil. It can prevent the spread of oil spills or guide the oil spills into the oil collection equipment.

[0003] The oil boom needs a float to create buoyancy so that it floats on the water surface. According to the form of the float, the oil boom can be divided into two categories: solid float and inflatable float. Among them, the inflatable float uses an inflatable air chamber to create buoyancy, and an air valve needs to be set at the inflation port of the air chamber. The performance of the air valve has a certain influence on the reliability and deployment speed of the oil boom. The present invention is an improved F1 inflation valve used for inflating and deflation of the air chamber of the inflatable oil boom.

[0004] At present, most inflatable oil booms use inflation valves made of PUM (polyurethane sealant), which have the following problems: low strength, which may cause deformation and failure under the action of strong external force when the boom is recovered by a boom reel; high height, which causes obvious protrusions on the surface of the boom, increasing the possibility of deformation and damage due to force, and damaging the boom; the diameter of the part inside the boom is small, which may fall off the boom under external force; the valve core needs to be protected by a plastic cover, and the cover needs to be unscrewed each time it is inflated or deflated, which is not convenient.

[0005] In order to solve the above series of problems, the F1 valve was developed and used at the inflation port of the rubber inflatable oil boom. However, there are still some problems in use: when the oil boom is rolled up, the valve may be subjected to upward or downward pressure for various reasons, the valve core in the valve may be stuck and the pin of the fixed movable block may be deformed; when the oil boom is rolled up, the metal part of the valve presses the rubber part of the oil boom, which may cause deformation and damage to the oil boom; the bayonet on the valve core used to open and close the valve may be inconvenient to connect with the tool due to angle problems; the valve cover is inconvenient to twist, and it is difficult to remove the valve; the valve may contact the bottom of the air chamber in the later stage of deflation, blocking the air outlet. Summary of the invention

[0006] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to provide a rotary inflation valve for an oil boom, which solves the problem of oil boom rupture that may be caused by the F1 valve, protects the inflation chamber of the oil boom from being damaged when the oil boom is folded, improves the valve's anti-extrusion ability, and makes the valve core part no longer bear a vertical force, thereby avoiding deformation of the fixing pin hole.

[0007] The technical solution of the present invention is: the rotary inflation valve for oil boom comprises a valve cover (1), a rotary valve core (6), and a valve body (9), all of which are made of aluminum alloy;

[0008] The upper surface of the valve cover is completely covered by an upper rubber sleeve (2) and has a threaded hole in the middle;

[0009] The rotary valve core is cylindrical and has a flange on its upper end surface. Three grooves (7) are evenly distributed along the circumference on the outer wall of the rotary valve core. The grooves include an inclined portion and a straight portion. The inclined portion is inclined downward and inward, and the lower edge of the inclined portion has a gentler slope than the upper edge. The straight portion is above the inclined portion, and there is a bulge above the junction of the straight portion and the inclined portion.

[0010] The valve body is straw hat-shaped with a cylindrical protrusion in the middle. The outer wall of the protrusion has threads that match the threaded holes of the valve cover. There is a through hole in the middle of the protrusion. The upper hole diameter of the through hole is larger than the lower hole diameter. The flange of the rotating valve core is stuck between the upper and lower parts of the through hole. Three first positioning protrusions (10) evenly distributed along the circumference are provided at the lower part of the through hole. A pin (13) is provided in each first positioning protrusion. The first positioning protrusion is fixed by the pin (13). Each pin moves in a groove. The lower rubber sleeve (12) partially covers the bottom end surface of the valve body and exposes the outer periphery of the bottom end surface.

[0011] The upper surface of the valve cover of the present invention is completely covered by the upper rubber sleeve, and the lower rubber sleeve partially covers the bottom end surface of the valve body, so as to protect the oil boom air chamber from being squeezed and damaged by the metal part of the inflation valve when the oil boom is retracted, thereby solving the problem of oil boom rupture that may be caused by the F1 valve; three grooves evenly distributed along the circumference are provided on the outer wall of the rotating valve core, and the grooves include an inclined portion and a straight portion, the inclined portion is inclined downward and inward, and the lower edge of the inclined portion has a gentler slope than the upper edge, and the straight portion is above the inclined portion and there is a protrusion above the junction of the straight portion and the inclined portion, which ensures that the rotating valve core can naturally fall to the lowest position before locking when the airtight lock is released and can rotate left and right by a certain angle. At the same time, the rotating valve core can move up and down for a distance without being stuck when the airtight lock is released, which prevents the pin hole connecting the rotating valve core and the valve body from being deformed and causing the valve to fail due to the rotating valve core being stuck when the rotating valve core is subjected to up and down forces, thereby improving the anti-extrusion ability of the valve, so that the valve core part of the valve is no longer subjected to vertical forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the disassembled structure of the rotary inflation valve for oil boom according to the present invention.

[0013] Figure 2a-2d Various movement positions of the groove of the rotating valve core relative to the first positioning protrusion of the valve body are shown. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0015] It should be noted that the term "comprises" and any variations in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or equipment.

[0016] like Figure 1 As shown in 2, the rotary inflation valve for oil boom comprises a valve cover 1, a rotary valve core 6, and a valve body 9, all of which are made of aluminum alloy;

[0017] The upper surface of the valve cover is completely covered by the upper rubber sleeve 2 and has a threaded hole in the middle;

[0018] The rotary valve core is cylindrical and has a flange on the upper end surface. Three grooves 7 are evenly distributed along the circumference on the outer wall of the rotary valve core. The grooves include an inclined portion and a straight portion. The inclined portion is inclined downward and inward, and the lower edge of the inclined portion has a gentler slope than the upper edge. The straight portion is above the inclined portion and there is a bulge above the junction of the straight portion and the inclined portion.

[0019] The valve body is straw hat-shaped with a cylindrical protrusion in the middle. The outer wall of the protrusion has threads that match the threaded holes of the valve cover. There is a through hole in the middle of the protrusion. The upper hole diameter of the through hole is larger than the lower hole diameter. The flange of the rotating valve core is stuck between the upper and lower parts of the through hole. Three first positioning protrusions (10) evenly distributed along the circumference are provided at the lower part of the through hole. A pin (13) is provided in each first positioning protrusion. The first positioning protrusion is fixed by the pin (13). Each pin moves in a groove. The lower rubber sleeve 12 partially covers the bottom end surface of the valve body and exposes the outer periphery of the bottom end surface.

[0020] The upper surface of the valve cover of the present invention is completely covered by the upper rubber sleeve, and the lower rubber sleeve partially covers the bottom end surface of the valve body, so as to protect the oil boom air chamber from being squeezed and damaged by the metal part of the inflation valve when the oil boom is retracted, thereby solving the problem of oil boom rupture that may be caused by the F1 valve; three grooves evenly distributed along the circumference are provided on the outer wall of the rotating valve core, and the grooves include an inclined portion and a straight portion, the inclined portion is inclined downward and inward, and the lower edge of the inclined portion has a gentler slope than the upper edge, and the straight portion is above the inclined portion and there is a protrusion above the junction of the straight portion and the inclined portion, which ensures that the rotating valve core can naturally fall to the lowest position before locking when the airtight lock is released and can rotate left and right by a certain angle. At the same time, the rotating valve core can move up and down for a distance without being stuck when the airtight lock is released, which prevents the pin hole connecting the rotating valve core and the valve body from being deformed and causing the valve to fail due to the rotating valve core being stuck when the rotating valve core is subjected to up and down forces, thereby improving the anti-extrusion ability of the valve, so that the valve core part of the valve is no longer subjected to vertical forces.

[0021] Preferably, the valve cover and the upper rubber sleeve are provided with first countersunk holes 3, which are four in total. The first countersunk holes penetrate the upper rubber sleeve 2 and penetrate into the valve cover 1. The valve cover 1 and the valve body 9 are screwed together by using tools and the four countersunk holes 3, so that the second gasket 5 is pressed on the air chamber to fix the inflation valve at the opening.

[0022] Preferably, a first gasket 4 is provided on the top of the threaded hole of the valve cover. The valve cover 1 and the valve body 9 are screwed together through threads and sealed.

[0023] Preferably, an annular groove is provided at the bottom of the valve cover, and the second gasket 5 is in the annular groove. In this way, the contact end surface of the valve cover 1 and the valve body 9 clamps the oil boom air chamber to play a sealing role.

[0024] Preferably, a third gasket 8 is provided below the flange of the rotary valve core. This allows the flange of the rotary valve core to be sealed with the contact surface of the valve body 9. There is elasticity between the two. After the inflation is completed, the rotary valve core 6 is rotated in the opposite direction until the valve body 9 is inflated. Figure 2b After the situation shown, continue to rotate so that the third gasket 8 is compressed downward until Figure 2a In the situation shown, the rotary valve core 6 is stuck in position and blocks the inflation port.

[0025] Preferably, a second countersunk hole is provided in the middle of the rotary valve core in the shape of a regular octagonal star. A special air pump is used for inflation, and its air outlet is square. The air outlet is connected to the octagonal star hole on the rotary valve core 6, and the octagonal star hole allows the inflation port to be easily connected to the square air outlet at various angles.

[0026] Preferably, three second positioning protrusions are evenly distributed along the circumference at the bottom of the through hole, and the second positioning protrusions are on the same plane as the first positioning protrusions. The second protrusions limit the position of the rotating valve core, reduce the space for the valve core to rotate in a non-horizontal direction, and prevent it from accidentally falling off due to rotation.

[0027] Preferably, the inner diameters of the first positioning protrusion and the second positioning protrusion are the same as the inner wall diameter of the rotary valve core.

[0028] Preferably, the lower rubber sleeve has three recesses evenly distributed along the circumference, connecting the inner and outer rings of the lower rubber sleeve 12. These three recesses ensure that the valve body has an airflow channel when the bottom is pressed against the inner wall of the air chamber, ensuring normal outflow of the airflow.

[0029] The present invention is installed at the inflation port of the oil boom air chamber and is often used together with a boom reel. When in use, the boom reel releases the oil boom and deploys it after inflation. When retracting, the rotary valve core is loosened upward to unlock the valve to allow the gas to escape. After the gas in the air chamber is discharged, the boom reel is started to roll in the oil boom. After the oil boom is subjected to force, it is rolled on the boom reel. The upper and lower covers of the inflation valve are respectively pressed against the inner wall of the air chamber and the rolled outer circle of the oil boom. The upper and lower rubber sleeves ensure that the aluminum alloy valve body does not contact the rubber oil boom, thereby avoiding the oil boom from being broken under high pressure. When the oil boom is rolled up, if the inflation valve and the inflation valve are rolled at the same position, the upper and lower inflation valves will squeeze each other, and sometimes squeeze the rotating valve core. The special shape of the groove on the outer wall of the rotating valve core ensures that the rotating valve core can naturally fall to the lowest position before locking when released and can rotate left and right at a certain angle. At the same time, the rotating valve core can move up and down for a distance when released without being stuck. This prevents the pin connecting the rotating valve core and the valve body from being stuck and deformed when the valve core is subjected to up and down forces, causing the valve to fail.

[0030] The working principle of the present invention is as follows:

[0031] The present invention is installed at the inflation port of the inflatable oil boom. After correct installation, the rotary valve core 6 can rotate in the inner hole of the valve body 9 under the cooperation of the pin 13, the groove 7 and the limitation of the first positioning protrusion 10. The first positioning protrusion 10 ensures the stability of the position of the rotary valve core 6. When in use, this component is inserted into the air chamber through the air chamber opening, and the rotary valve core 6 is exposed at the opening. The valve cover 1 and the valve body 9 are screwed together through the thread by using the tool and the cooperation of the four first countersunk holes 3, so that the second gasket 5 is pressed on the air chamber to fix the inflation valve at the opening.

[0032] The oil boom is often used in conjunction with a boom reel. The vessel carries the oil boom to the operating waters and releases the boom. A special air pump is used to inflate the oil. Its air outlet is square. The air outlet is connected to the octagonal star hole on the rotary valve core 6. The octagonal star hole allows the inflation port to be easily connected to the square air outlet at various angles. At this time, the relative position of the pin 13 and the groove 7 is as follows: Figure 2b As shown, turn the rotary valve core 6 to Figure 2c In the situation shown, the rotary valve core rises and the air pump fills the air. After the air is filled, the rotary valve core 6 is rotated in the opposite direction until Figure 2b Continue to rotate after the situation shown, compress the third gasket 8 downward until Figure 2a In the situation shown, the rotary valve core 6 is stuck in position and blocks the inflation port.

[0033] After the oil boom is used, use the boom reel to recover the boom. Figure 2b When the oil boom is rolled up by the boom reel, the position of the inflation valve is rolled in, and the bottom of the inflation valve is in close contact with the inner wall of the air chamber under the action of tension. At this time, the three recesses on the lower rubber sleeve 12 retain the channel for gas to flow out, ensuring that the gas in the air chamber is completely exhausted when the boom reel is retracted.

[0034] After the oil boom is rolled up layer by layer by the boom reel, the valve will be pressed tightly against the rubber surface of the air chamber, and the upper and lower rubber sleeves 2 and 12 play a protective and buffering role to prevent the rubber air chamber from being cut. When the two valves overlap up and down on the boom reel, the different relative positions will generate a strong force in the up and down direction on the air valve including the rotary valve core 6. Due to the special groove shape of the rotary valve core 6, the rotary valve core cannot be kept in the Figure 2c The height shown, that is, the rotating valve core 6 will automatically slide down to Figure 2b The height is shown, and it can rotate a certain distance in the horizontal direction at this time. At this time, if the rotating valve core 6 is subjected to upward pressure, it will rise again and will not be easily stuck at a high position due to resistance, and will fall again after no force is applied. On the contrary, when the rotating valve core is subjected to downward pressure, the rotating valve core will compress the third gasket 8. Even if the compression degree is greater than the state when it is normally locked, the rotating valve core 6 can still move downward a certain distance by relying on the shape of the groove body, such as Figure 2d As shown. In this way, when the valve core is subjected to external force, it can move up and down accordingly, avoiding the risk of the pin being deformed due to force, and ensuring that it will not fail to work again due to valve problems after recovery.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. It gives the inflation valve better resistance to longitudinal force extrusion, protects the core components, and greatly improves the stability and reliability of the inflation valve.

[0037] 2. Provides a buffer between the oil boom and the metal valve body to prevent possible rupture of the oil boom rubber and improve the pressure resistance and life of the oil boom.

[0038] 3. It improves the smoothness of the oil boom when it is deflated, ensuring the efficiency of the oil boom recovery operation.

[0039] 4. The invention is more conducive to the operation of the staff, reduces the difficulty of operation, and improves the work efficiency of the operators.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A rotary inflation valve for an oil boom, comprising a valve cover (1), a rotary valve core (6), and a valve body (9), all of which are made of aluminum alloy, and characterized in that: The upper surface of the valve cover is completely covered by an upper rubber sleeve (2) and has a threaded hole in the middle; The rotary valve core is cylindrical and has a flange on its upper end surface. Three grooves (7) are evenly distributed along the circumference on the outer wall of the rotary valve core. The grooves include an inclined portion and a straight portion. The inclined portion is inclined downward and inward, and the lower edge of the inclined portion has a gentler slope than the upper edge. The straight portion is above the inclined portion, and there is a bulge above the junction of the straight portion and the inclined portion. The valve body is straw hat-shaped with a cylindrical protrusion in the middle. The outer wall of the protrusion has threads that match the threaded holes of the valve cover. There is a through hole in the middle of the protrusion. The upper hole diameter of the through hole is larger than the lower hole diameter. The flange of the rotating valve core is stuck between the upper and lower parts of the through hole. Three first positioning protrusions (10) are evenly distributed along the circumference at the lower part of the through hole. A pin (13) is provided in each first positioning protrusion. The first positioning protrusion is fixed by the pin (13). Each pin moves in a groove. The lower rubber sleeve (12) partially covers the bottom end surface of the valve body and exposes the outer periphery of the bottom end surface.

2. The rotary inflation valve for oil boom according to claim 1, characterized in that: The valve cover and the upper rubber sleeve are provided with first countersunk holes (3), which are four in total.

3. The rotary inflation valve for oil boom according to claim 2, characterized in that: A first gasket (4) is arranged on the top of the threaded hole of the valve cover.

4. The rotary inflation valve for oil boom according to claim 3, characterized in that: An annular groove is provided at the bottom of the valve cover, and the second gasket (5) is in the annular groove.

5. The rotary inflation valve for oil boom according to claim 4, characterized in that: A third gasket (8) is arranged below the flange of the rotating valve core.

6. The rotary inflation valve for oil boom according to claim 1, characterized in that: A second countersunk hole is arranged in the middle of the rotary valve core and is in the shape of a regular octagonal star.

7. The rotary inflation valve for oil boom according to claim 1, characterized in that: Three second positioning protrusions evenly distributed along the circumference are arranged at the lower part of the through hole, and the second positioning protrusions and the first positioning protrusions are on the same plane.

8. The rotary inflation valve for oil boom according to claim 7, characterized in that: The inner diameters of the first positioning protrusion and the second positioning protrusion are the same as the inner wall diameter of the rotary valve core.

9. The rotary inflation valve for oil boom according to claim 1, characterized in that: The lower rubber sleeve has three recesses evenly distributed along the circumference.

Images