CN203146928U - Inflation valve - Google Patents

Abstract

The utility model relates to an inflation valve which comprises a valve casing. An upper air chamber and a lower air chamber are arranged in the valve casing and are communicated through a valve port, an end cover capable of sheltering the upper air chamber is connected onto the valve casing, and an inflation one-way valve core assembly is arranged at the position of the valve port. The inflation valve is characterized in that the inflation one-way valve core assembly is a valve piece with certain elasticity and fixed on one side of an inner top wall of the lower air chamber, and the valve piece is kept to upward plug the valve port elastically. The inflation one-way valve core assembly is the valve piece with certain elasticity and fixed on one side of the inner top wall of the lower air chamber, the structure is simple, and a valve rod structure is not needed, so that the total height of the valve casing can be manufactured to be small, the size of the valve casing can be small, and the inflation valve is ensured not to easily damage inflatable products during storage after air in the inflated products is discharged completely. In addition, the ventilating area of the valve port is large when the valve piece is opened, so that the amount of air flow passing through the valve port is large, and the inflating and deflating efficiency is high.

Description

A kind of gas charging valve

Technical field

The utility model relates to a kind of for the gas charging valve on the equipment of needs inflation, and this gas charging valve is particularly suitable on the life raft.

Background technique

The equipment of comparatively large-scale needs inflation such as life raft, air mattress, inflatable dinghy all are provided with gas charging valve on it.Conventional gas charging valve, comprise housing, have the active chamber that is communicated with working environment and the air-inlet cavity that is in communication with the outside in the housing, be interconnected by valve port between active chamber and the air-inlet cavity, the valve port position is provided with unidirectional gas charging valve core assembly, and this unidirectional gas charging valve core assembly only allows air to enter active chamber from air-inlet cavity.

Be a kind of gas charging valve the Chinese utility model patent " a kind of gas charging valve " of ZL201120322164.8 (notification number is CN202203458U) has disclosed as a patent No., comprise housing, have in the housing and upper gas chamber and lower chamber, be interconnected by valve port between upper gas chamber and the lower chamber, the valve port position is provided with inflation nonreturn valve core assembly, it is characterized in that: the top of housing has cylindrical insertion part, be arranged with the end cap that described upper gas chamber is hidden on the insertion part, lower part of frame has in order to be connected the threaded joints on the valve seat, has the card post of two evaginations on the perisporium of insertion part.Inflation nonreturn valve core assembly comprises valve rod, the lower end of valve rod is provided with the valve block that flexible material is made, the inwall of described valve port forms connecting tendon arranged in a crossed manner, described valve handle activity is located in interconnection place of connecting tendon, described valve block is positioned at lower chamber, and the valve rod that is positioned at upper gas chamber is provided with in order to stop the block piece of valve rod whereabouts.

This gas charging valve mainly is made up of housing, end cap, valve seat and nonreturn valve core assembly, and the whole height height is not suitable for packaging and storing; Bowl-shape valve block in the mangetic core assembly of gas charging valve is connected in the valve body by valve rod, valve block adopts flexible material to make, and it only opens valve port by the distortion of valve block, and the deformation extent of valve block periphery is limited, therefore smaller by the throughput of valve port, charging efficiency is low; Because stem shaft is to constraining in the valve body, the amplitude that moves up and down is little, so exhaust efficiency is low, period of exhaust can be very long, and exhaust process can allow the people tired like this; For preventing that valve gap from losing, end cap links together by connecting sheet and housing, and the connecting sheet in the existing gas charging valve exposes outside valve body fully, influence outward appearance, and in use interferes with hull easily, influences use.

Summary of the invention

Technical problem to be solved in the utility model is to provide the short while throughput of a kind of whole height big gas charging valve at above-mentioned prior art present situation, and this gas charging valve also has advantage of simple structure.

The utility model solves the problems of the technologies described above the technological scheme that adopts: a kind of gas charging valve, comprise valve casing, have upper gas chamber and lower chamber in the valve casing, be interconnected by valve port between upper gas chamber and the lower chamber, be connected with the end cap that upper gas chamber can be covered on the valve casing, the valve port position is provided with inflation nonreturn valve core assembly, it is characterized in that: described inflation nonreturn valve core assembly is to be fixed on the certain flexible valve block of having of lower chamber inner roof wall one side, the elasticity trend that this valve block keeps up and blocks described valve port.

One side of above-mentioned valve block has the protruding assembly department of side, this assembly department is fixed on lower chamber inner roof wall one side by first screw, this structure is convenient to the inner roof wall of valve block and lower chamber is fixed, and the bottom surface at the link position place of described assembly department and valve block has the groove that laterally runs through.The elasticity that groove can strengthen this valve block self is set, better guarantees the elasticity trend that valve block keeps up and blocks described valve port.

Because the wall thickness of lower chamber inner roof wall is thinner in the valve casing, be not suitable for arranging tapped hole, still have the attachment post of downward extension in above-mentioned lower chamber inner roof wall one side, described assembly department is set on the attachment post, conveniently mold the tapped hole of certain depth at attachment post, the bottom of assembly department is provided with briquetting, and this briquetting is fixed by described first screw and attachment post, arrange that briquetting can increase and and assembly department between area of contact, guarantee that valve block is fixed.

Have ladder hole in the above-mentioned valve casing, the aperture portion of ladder hole forms described upper gas chamber, and the macropore portion of ladder hole forms described lower chamber, and the aperture portion of ladder hole and the position, boundary of macropore portion form described valve port.

The cross section of above-mentioned valve casing is stepped, the external diameter of described upper gas chamber is less than the external diameter of lower chamber, the inner roof wall center position of described end cap has downward extension in order to be threaded in the screw column in the upper gas chamber, the periphery of screw column is arranged with seal ring, under the state that end cap screws, the last side face of described seal ring and upper gas chamber compresses and forms sealing, the periphery of the upper gas chamber gland that also has been threaded, and this gland is positioned at the scope that described end cap is covered with.This structure is convenient to gas charging valve is installed on the equipment that needs inflation, clamp-on the lower chamber of valve casing in the equipment that needs inflation from inflation inlet during installation, allow upper gas chamber expose outside the equipment that to inflate, then gland is tightened on the upper gas chamber periphery, so just the equipment that the needs of inflation inlet periphery are inflated can be pressed between the outer step surface of gland and valve casing.

Improve further, above-mentioned end cap links together by connecting sheet and valve casing, prevents the end cap loss, and described connecting sheet curl also is positioned at the scope that described end cap is covered with, the last inwall of the upper end of connecting sheet and end cap is fixed, and the lower end of connecting sheet is set on the described gland.And this connecting sheet is hidden in the gland, makes gas charging valve monnolithic case slyness more attractive in appearance, and connecting sheet is difficult for hanging with inflatable product, can not cut inflatable product.

The upper end of above-mentioned connecting sheet is fixed by the last inwall of second screw and end cap.

Compared with prior art, advantage of the present utility model is: this inflation nonreturn valve core assembly is only for being fixed on the certain flexible valve block of having of lower chamber inner roof wall one side, simple in structure, need not stem structure, it is lower the valve casing total height can be done ground like this, volume is little, after the air in inflatable product drains, guarantees or the time gas charging valve deposited is difficult for inflatable product is caused damage; When valve block was opened in addition, the breathing area of valve port was big, thus big by the throughput of valve port, inflation and exhaust efficiency height.

Description of drawings

Fig. 1 is the utility model embodiment's perspective view one;

Fig. 2 is the utility model embodiment's perspective view two;

Fig. 3 is the utility model embodiment's sectional view;

Fig. 4 is the utility model embodiment's three-dimensional exploded view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Shown in Fig. 1～4, be preferred embodiment of the present utility model.

A kind of gas charging valve, comprise valve casing 1, the cross section of valve casing 1 is stepped, have upper gas chamber 11 and lower chamber 12 in the valve casing 1, the external diameter of upper gas chamber 11 is interconnected by valve port 13 between upper gas chamber 11 and the lower chamber 12 less than the external diameter of lower chamber 12, has ladder hole in the valve casing 1, the aperture portion of ladder hole forms upper gas chamber 11, and the macropore portion of ladder hole forms described lower chamber 12, and the aperture portion of ladder hole and the position, boundary of macropore portion form described valve port 13.Upper gas chamber 11 and inflator (inflator or air pump) or extraneous the connection, lower chamber 12 communicates with equipment (life raft) inside that needs inflation.

Be connected with the end cap 2 that upper gas chamber 11 can be covered on the valve casing 1, the inner roof wall center position of end cap 2 has downward extension in order to be threaded in the screw column 21 in the upper gas chamber 11, screw column 21 peripheries are arranged with seal ring 9, under the state that end cap 2 screws, seal ring 9 compresses the formation sealing with the last side face of upper gas chamber 11, the periphery of upper gas chamber 11 gland 6 that also has been threaded, this gland 6 is positioned at the scope that end cap 2 is covered with.

End cap 2 links together by connecting sheet 7 and valve casing 1, connecting sheet 7 curls also are positioned at the scope that end cap 2 is covered with, the upper end of connecting sheet 7 is fixed by second screw 8 and the last inwall of end cap 2, the lower end of connecting sheet 7 is set on the described gland 6, and the last inwall of the upper end of connecting sheet 7 and end cap 2 is fixed.

Valve port 13 positions are provided with inflation nonreturn valve core assembly, inflation nonreturn valve core assembly be fixed on lower chamber 12 inner roof walls one side have certain flexible valve block 3, the elasticity trend that this valve block 3 keeps up and blocks described valve port 13.

One side of valve block 3 has the protruding assembly department of side 31, and this assembly department 31 is fixed on lower chamber 12 inner roof walls one side by first screw 4, and assembly department 31 has the groove 32 that laterally runs through with the bottom surface at the link position place of valve block 3.Lower chamber 12 inner roof walls one side has the attachment post 14 of downward extension, and assembly department 31 is set on the attachment post 14, and the bottom of assembly department 31 is provided with briquetting 5, and this briquetting 5 is fixing with attachment post 14 by first screw 4.

During use, clamp-on lower chamber 12 peripheries of valve casing in the equipment that needs inflation from inflation inlet, allow upper gas chamber 11 expose outside the equipment that to inflate, then gland 6 is tightened on the upper gas chamber periphery, so just the equipment that the needs of inflation inlet periphery are inflated can be pressed between the outer step surface of gland 6 and valve casing 1.Under normal state, valve block 3 keeps close port 13 under self elastic force and air pressure inside effect, prevent gas leakage.Charging air inlet with charger during inflation is connected to the upper gas chamber periphery, and pressurized gas are pressed to valve block 3 through valve port 13, and valve block 3 enters in the lower chamber 12 after opening valve port 13, finishes inflation.

Claims (7)

1. gas charging valve, comprise valve casing (1), have upper gas chamber (11) and lower chamber (12) in the valve casing (1), be interconnected by valve port (13) between upper gas chamber (11) and the lower chamber (12), be connected with the end cap (2) that upper gas chamber (11) can be covered on the valve casing (1), valve port (13) position is provided with inflation nonreturn valve core assembly, it is characterized in that: described inflation nonreturn valve core assembly has certain flexible valve block (3) for what be fixed on lower chamber (12) inner roof wall one side, and this valve block (3) keeps up and blocks the elasticity trend of described valve port (13).

2. gas charging valve according to claim 1, it is characterized in that: a side of described valve block (3) has the protruding assembly department of side (31), this assembly department (31) is fixed on lower chamber (12) inner roof wall one side by first screw (4), and described assembly department (31) has the groove (32) that laterally runs through with the bottom surface at the link position place of valve block (3).

3. gas charging valve according to claim 2, it is characterized in that: described lower chamber (12) inner roof wall one side has the attachment post (14) of downward extension, described assembly department (31) is set on the attachment post (14), the bottom of assembly department (31) is provided with briquetting (5), and this briquetting (5) is fixing by described first screw (4) and attachment post (14).

4. gas charging valve according to claim 1, it is characterized in that: described valve casing has ladder hole in (1), the aperture portion of ladder hole forms described upper gas chamber (11), the macropore portion of ladder hole forms described lower chamber (12), and the aperture portion of ladder hole and the position, boundary of macropore portion form described valve port (13).

5. according to the described gas charging valve of arbitrary claim in the claim 1～4, it is characterized in that: the cross section of described valve casing (1) is stepped, the external diameter of described upper gas chamber (11) is less than the external diameter of lower chamber (12), the inner roof wall center position of described end cap (2) has downward extension in order to be threaded in the screw column (21) in the upper gas chamber (11), screw column (21) periphery is arranged with seal ring (9), under the state that end cap (2) screws, described seal ring (9) compresses the formation sealing with the last side face of upper gas chamber (11), the periphery of upper gas chamber (11) gland (6) that also has been threaded, this gland (6) is positioned at the scope that described end cap (2) is covered with.

6. gas charging valve according to claim 5, it is characterized in that: described end cap (2) links together by connecting sheet (7) and valve casing (1), described connecting sheet (7) curl also is positioned at the scope that described end cap (2) is covered with, the last inwall of the upper end of connecting sheet (7) and end cap (2) is fixed, and the lower end of connecting sheet (7) is set on the described gland (6).

7. gas charging valve according to claim 6 is characterized in that: the upper end of described connecting sheet (7) is fixed by second screw (8) and the last inwall of end cap (2).

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