CN103836239B - American style mouth and French mouth dual-purpose nozzle head - Google Patents

Abstract

The invention discloses a dual-purpose tuyere head for an American nozzle and a French nozzle, which consists of a shell, a rotating part, a valve seat and a spring; the shell is provided with a shaft hole through, and the periphery of the shell is provided with a first assembly part for the high-pressure gas cylinder to be in screw joint and a second assembly part for the inflator to be assembled; the rotating piece is pivoted in the shaft hole by the shaft part, a first screw hole for the French nozzle to be inserted in an airtight manner is arranged at one end of the rotating piece, a second screw hole for the American nozzle to be inserted in an airtight manner is arranged at the other end of the rotating piece, an accommodating space is communicated between the first screw hole and the second screw hole, and a through hole for communicating the inside and the outside of the accommodating space is formed; the valve seat moves between a first position and a second position along the accommodating space, the through hole and the first screw hole are communicated at the first position, the through hole and the second screw hole are communicated at the second position, and the spring provides preset elastic force for the valve seat, so that the valve seat is positioned at the first position at any time; by means of the structure, the invention can be compatible with an external inflator or a high-pressure gas cylinder, has the non-return function, and further effectively improves the condition of large amount of air leakage of the part to be inflated.

Description

American style mouth and French mouth dual-purpose nozzle head

technical field

The invention relates to an air nozzle head of an inflatable device, in particular to a dual-purpose air nozzle head of an American nozzle and a French nozzle.

Background technique

The prior art is just as shown in the inventor’s application for filing in Taiwan, China No. 201213168: Dual-purpose air nozzles for American and French nozzles. The patent’s previous patent has a relatively simple structure, small size, and will not loosen during use. And other advantages, when in use, only need to directly plug in the American nozzle or French nozzle, without additional manual switch, you can directly treat the inflatable parts (such as tires) through the handheld pump or high-pressure gas cylinder connected to the hose. Gas filling is indeed a quick operation and convenient design, so it is welcomed by the market.

However, this patent application still has the following room for improvement:

1. After actual testing, it is found that the hose is not compatible with external pumps or high-pressure gas cylinders. You can only choose one of the factory settings, and the advantages and disadvantages of pumps and high-pressure gas cylinders are different. In this way, This causes the user to be unable to select the most suitable operation mode for inflating the gas, which has the disadvantage of insufficient flexibility.

2. Furthermore, as shown in Figure 3 of the patent’s previous design, it inserts the French mouth of the inflatable part during operation, and then starts the inflator. However, when the user has not started the inflator, the inflatable The existing air pressure inside the parts will be released directly through the hose. The same situation will also happen to the American nozzle, but the diameter of the French nozzle is larger than that of the ordinary American nozzle, so the instantaneous pressure release is more serious. As a result, the user has to spend time or effort to refill the gas.

The reason is that in order to solve the shortcomings of the published patent application No. 201213168, the inventor has further designed the present invention.

Contents of the invention

The purpose of the present invention is to provide a dual-purpose tuyere head for American and French nozzles, which is compatible with external pumps or high-pressure gas cylinders, and has anti-reverse function, thereby effectively improving the large amount of deflation of the inflated parts.

In order to achieve the above object, the solution of the present invention is:

1. A dual-purpose nozzle head for American and French nozzles, which includes;

A shell, which has a shaft hole that runs through both ends, and a first assembly part is arranged on the outer periphery. The first assembly part has a threaded section that can be screwed to the high-pressure gas cylinder, and is also provided with a connecting shaft hole that can provide high-pressure gas cylinder filling. The first air supply hole is equipped with a thimble that can pierce the cover of the high-pressure gas cylinder; the outer periphery of the shell is also provided with a second assembly part for the assembly of the pump, and the second assembly part is set There is a second air supply hole that communicates with the shaft hole and can provide gas for the second pumping device; a rotating member, which has a shaft portion that is pivotally arranged in the shaft hole, and has a first air-tight insertion hole for the French mouth at one end. A screw connection hole, the other end is provided with a second screw connection hole for the airtight insertion of American-style nozzles, there is an accommodation space connected between the first and second screw connection holes, and a perforation connecting the inside and outside of the accommodation space is provided, and the The outer periphery of the shaft part is recessed with an annular air channel connected to the perforation, and the annular air channel is connected to the first and second air supply holes at the same time; a valve seat, which is displaced between the first position and the second position along the accommodating space. In the first position, the through hole and the first screw connection hole can be connected, and in the second position, the through hole can be connected with the second screw connection hole; and a spring is installed in the accommodating space, so that the valve seat can be positioned at any time. The preset elasticity for the first position.

The housing is also equipped with a first valve for opening and closing the first air supply hole and a second valve for opening and closing the second air supply hole, and when the French mouth or the American mouth is deflated, the first valve can be pushed to close the first air supply hole and the second air supply hole. The second valve closes the second air supply hole. When the high-pressure gas cylinder is filled, the first valve is pushed to open the first air supply hole. At this time, the second valve remains in the state of closing the second air supply hole. When the pump is filled with air, Then the second valve is pushed to open the second air supply hole, and the first valve is made to close the first air supply hole.

The above-mentioned first assembly part communicates with an annular hole installed with a leak-proof gasket at the inner end of the threaded section, and the inner end of the annular hole is connected with a first air supply hole, and a first air supply hole is formed at the junction of the first air supply hole and the shaft hole. A non-return chamber, the first non-return chamber is recessed on the wall of the shaft hole, communicates with the annular air passage, and accommodates the first valve, and the shaft of the rotating member limits the first valve to the first non-return chamber, so that the first valve can open and close the first air supply hole.

A socket is also provided in the above-mentioned first air supply hole, and this socket is used for the installation of a thimble, and the thimble is provided with a pointed tip within the range of the leak-proof gasket. The socket and the thimble do not block the communication state of the first air supply hole and the ring hole.

The above-mentioned second assembly part is coaxially equipped with an external thread area and an internal screw hole, and an internal stopper is installed at the inner end of the internal screw hole. Then the outer stopper is screwed together, so that a second non-return chamber that is always connected with the shunt hole can be defined between the inner stopper and the outer stopper, so that it can be installed for the second valve, and the outer stopper is also provided with Connecting with the second air supply hole of the second non-return chamber, the second valve can open and close the second air supply hole in a limited position, and the second valve can open and close the second air supply hole in a limited position.

The above-mentioned rotating member is provided with a radially outwardly expanding head at one end of the shaft, and the head can abut against one end of the shaft hole. As for the other end of the shaft, a screw joint is provided, and the screw joint can be combined with a nut. , the nut can abut against the other end of the shaft hole, so as to position the rotating part and the housing relatively, and the other end of the shaft part is also coaxially recessed with an accommodating space, as for the head, it is provided with a space that can be connected with the accommodating The first threaded hole communicating with the space is provided. The diameter of the first threaded hole is smaller than that of the accommodating space, and a level of surface is formed at the joints, and the nut is also provided with a second threaded hole that can communicate with the accommodating space. hole; one end of the spring abuts against the shoulder, and the other end provides preset elastic force to the valve seat.

The outer periphery of the above-mentioned valve seat is slid in the accommodating space with an anti-leakage ring. One end of the valve seat protrudes toward the direction of the second threaded hole, and a push rod is protruded. perforation, and the side of the ejector rod is provided with a channel communicating with the second through hole. When the valve seat is in the second position, the ejector rod is at a position away from the second threaded hole, so that the through hole, the shallow groove, and the second hole can be connected. perforation and channel, but when the valve seat is at the first position, its ejector rod is at a position close to the second threaded hole. At this time, the shallow groove of the valve seat, the second perforation and the perforation are staggered, and are closed by the wall of the accommodating space. And make the through hole communicate with the first threaded hole directly through the accommodating space.

The above-mentioned air pump is composed of a cylinder body, a piston, a piston rod, an outer cover and a handle tube. The cylinder body has a cylinder hole that runs through both ends, and one end of the cylinder hole is provided with an internal thread area that can be screwed into the external thread area. As for the piston It is an airtight sliding fit between the two ends of the cylinder hole, and a piston rod is connected to the piston. The piston rod protrudes from the other end of the cylinder hole, and an outer cover is installed on the other end of the cylinder hole. The outer cover supports the piston rod so that the sleeve The handle tube fitted on the periphery of the cylinder can drive the piston rod back and forth, so that the piston can pump air in the cylinder hole, and then can fill the second air supply hole.

After adopting the above-mentioned structure, the outer periphery of the casing of the double-purpose tuyere head of the American-style nozzle and the French-style nozzle is provided with a first assembly part for screwing the high-pressure gas cylinder and a second assembly part for the assembly of the pump; Inflators and high-pressure gas cylinders are installed; more importantly, when the present invention provides an American-style mouth or a French-style mouth for plugging in, and when it is too late to start the high-pressure gas cylinder or air pump, the deflation of the French-style mouth or the American-style mouth will automatically push The first valve closes the first air supply hole, and the second valve closes the second air supply valve, which has an anti-reverse effect, thereby effectively improving the large amount of air leakage of the inflatable parts, so that the air leakage problem of the above-mentioned patent application can be effectively improved, and it is indeed true. There is no mistake in improving practical benefits.

Description of drawings

Fig. 1 is the exploded schematic view of the present invention;

Fig. 2 is a three-dimensional combination schematic diagram of the present invention;

Fig. 3 is a combined sectional schematic diagram of Fig. 2;

Fig. 4 is a combined cross-sectional schematic view of the first inflating device of the present invention when the French mouth is inflated;

Fig. 5 is a combined cross-sectional schematic view of the first pumping device of the present invention when filling the Schmidt nozzle;

Fig. 6 is a combined cross-sectional schematic view of the second inflating device of the present invention when filling the French mouth;

Fig. 7 is a combined cross-sectional schematic view of the second inflating device of the present invention when inflating the Schmidt nozzle.

Explanation of main component symbols

10 Housing 11 Shaft hole 12 First assembly part

121 threaded section 122 ring hole 123 first air supply hole

124 the first check chamber 125 socket 13 the first valve

14 leak-proof gasket 15 thimble 151 pointed

16 second assembly part 161 external thread area 162 internal screw hole

163 Inner stopper 164 Diverter hole 17 Outer stopper

170 second air supply hole 18 second check chamber 18 second valve

20 the first pumping device 21 external thread 22 capping

30 rotating part 31 head 310 first threaded hole

311 Washer 312 Class Surface 32 Shaft

320 accommodating space 321 threaded part 322 perforation

323 annular air channel 33A, 33B leak-proof ring

34 Nut 340 Second threaded hole 35 Gasket

40 Valve seat 41 Leak stop ring 42 Push rod

43 channel 44 second perforation 45 shallow groove

46 spring 50A French mouth 50B American mouth

60 the second pumping device 61 cylinder block 610 cylinder bore

611 internal thread area 62 piston 63 piston rod

64 outer covers and 65 handle pipes.

detailed description

In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

Please refer to Fig. 1, Fig. 2, Fig. 3, the present invention includes:

A housing 10, which has a shaft hole 11 that runs through the left and right ends, and a first assembly portion 12 extending on the outer circumference for the installation of the first pumping device 20, the first assembly portion 12 has a recessed Threaded segment 121, the bottom end of this threaded segment 121 communicates with an annular hole 122, and the housing 10 is further provided with a first air supply hole 123 that can communicate with the shaft hole 11 at the bottom end of the annular hole 122, and the first air supply hole 123 and the shaft A first non-return chamber 124 is further formed at the junction of the hole 11. The first non-return chamber 124 is recessed on the wall of the shaft hole 11, and the hole diameter is larger than the first air supply hole 123, so that it can accommodate the first valve 13. , so that the first valve 13 can limit the opening and closing of the first air supply hole 123, as for the ring hole 122, a leak-proof gasket 14 is installed, and a socket 125 is further provided in the first air supply hole 123, and this socket 125 is used for a thimble 15 Installation, the thimble 15 is provided with a pointed head 151 within the scope of the leak-proof gasket 14, and the socket 125 and the thimble 15 do not block the communication state of the first air supply hole 123 and the ring hole 122; the housing 10 is further downward on the outer periphery There is a second assembly part 16 extending for the installation of the second pumping device 60. The second assembly part 16 is coaxially equipped with an external thread area 161 and an internal screw hole 162, and an internal stopper is installed at the inner end of the internal screw hole 162. Part 163, this inner retaining member 163 has the diversion hole 164 that communicates with the annular air passage 323 forever, and then is screwed with the outer retaining member 17 in the inner screw hole 162, so that the inner retaining member 163, the outer retaining member 17 can define There is a second non-return chamber 18 that is always connected to the split hole 164, so that it can be installed for the second valve 18, and the outer stopper 17 is further provided with a second air supply hole 170 that communicates with the second non-return chamber 18. The aperture of the second air supply hole 170 is smaller than that of the second non-reverse chamber 18, so that the second valve 18 can limit the opening and closing of the second air supply hole 170;

A first pumping device 20, which is a standard high-pressure gas cylinder, the high-pressure gas cylinder is provided with an external thread 21 that can be connected with the threaded section 121 of the first assembly part 12 at the mouth of the bottle, so that the outer end of the mouth of the bottle can be airtight Abut against the leak-proof gasket 14, so that the thimble 15 can pierce the cover 22 sealed at the bottle mouth, and then can fill the first air supply hole 123;

A rotating member 30, which has a shaft portion 32 pivotally arranged in the shaft hole 11, so that it can further limit the first valve 13 to the first non-return chamber 124, and the rotating member 30 is provided with a radially outer Expanded head portion 31, this head portion 31 can abut against one end of the shaft hole 11, and the other end of the shaft portion 32 is provided with a threaded portion 321, and this threaded portion 321 can be combined with a nut 34 to make this The nut 34 can abut against the other end of the shaft hole 11 so as to position the rotating member 30 and the housing 10 relative to each other. The other end of the shaft portion 32 is recessed with a receiving space 320 coaxially, and the head 31 is provided with There is a first threaded hole 310 that can communicate with the accommodation space 320. The diameter of the first threaded hole 310 is smaller than that of the accommodation space 320, so as to form a first-order surface 312 at the junction with each other. As for the first threaded hole A washer 311 is installed at the outer end of the hole 310, so that the first threaded hole 310 and the washer 311 can be inserted airtightly into the French mouth 50A as shown in FIG. Connected second threaded hole 340, and a gasket 35 is installed at the exchange place between the second threaded hole 340 and the accommodation space 320, so that the second threaded hole 340 and the gasket 35 can be as shown in Figure 5 Provide a Schrader nozzle 50B for airtight insertion; the shaft part 32 is also provided with a perforation 322 communicating with the first non-return chamber 124 and the accommodating space 320, and an annular air passage 323 communicating with the perforation 322 is recessed on the outer periphery of the shaft part 32. The air passage 323 can keep the communication between the perforation 322 and the diversion hole 164, and keep the communication between the perforation 322 and the first non-return chamber 124, so that when the French mouth 50A or the American mouth 50B is deflated, the first valve 13 can be pushed to close the first supply valve. air hole 123, and push the second valve 18 to close the second air supply hole 170, but when the first pumping device 20 is inflating, it can push the first valve 13 to move down to keep the first air supply hole 123, the first stop The unimpededness of the reverse chamber 124 and the perforation 322 enables the first inflating device 20 to forcibly inflate the French mouth 50A or the American mouth 50B. At this time, the second valve 18 still maintains the state of closing the second air supply hole 170. In addition, In order to maintain the airtightness between the shaft portion 32 and the shaft hole 11, anti-leakage rings 33A, 33B are installed on both sides of the annular air passage 323 on the outer periphery of the shaft portion 32, which can be in close contact with the shaft hole 11;

A valve seat 40, the outer periphery of which is slipped in the accommodation space 320 with a leak-proof ring 41, so that it can be displaced between the first position and the second position along the axial direction of the accommodation space 320, and one end of the valve seat 40 is further A push rod 42 protrudes toward the direction of the second screw connection hole 340, and a shallow groove 45 is recessed on the outer periphery, and a second through hole 44 is formed in the scope of the shallow groove 45, and the side of the push rod 42 is provided with a connecting hole. The channel 43 of the second through hole 44 and the second threaded hole 340, please cooperate with FIG. Through the through hole 322, the shallow groove 45, the second through hole 44 and the channel 43, in order to enable the first pumping device 20 to supply air to the second threaded hole 340, but when the valve seat 40 is in the first position, as shown in Figure 3 and As shown in Fig. 4, its ejector rod 42 is in the position close to the second threaded hole 340, and now the shallow groove 45 of the valve seat 40, the second perforation 44 and the perforation 322 are staggered, and are directly closed by the wall surface of the accommodating space 320, so that Make the through hole 322 communicate with the first threaded hole 310 directly through the accommodating space 320 , so that the state of supplying air to the first threaded hole 310 by the first pumping device 20 can be switched;

A spring 46 is installed in the accommodating space 320. One end of the spring 46 abuts against the stepped surface 312, and the other end provides a preset elastic force to the valve seat 40, so that the valve seat 40 can be positioned at the first position at any time. Potential; and

A second pumping device 60, which is a standard pump, is made up of a cylinder 61, a piston 62, a piston rod 63, an outer cover 64 and a handle tube 65, and the cylinder 61 has a cylinder hole 610 running through both ends, And one end of the cylinder hole 610 is provided with an internal thread area 611 that can be screwed to the external thread area 161. As for the piston 62, it can be airtightly slid between the two ends of the cylinder hole 610, and a piston rod 63 is connected to the piston 62. , the piston rod 63 can protrude from the other end of the cylinder hole 610, and the other end of the cylinder hole 610 is equipped with an outer cover 64, the outer cover 64 can support the piston rod 63 and limit the piston 62 from the cylinder hole 610, so that it fits in the cylinder body 61 The outer handle tube 65 can drive the piston rod 63 back and forth, so that the piston 62 can pump air in the cylinder hole 610 , and then can fill the second air supply hole 170 with air.

Please refer to Fig. 4, the user chooses the embodiment in which the first pumping device 20 is used to inflate the French nozzle 50A. 40 is positioned at the first position, so the first inflating device 20 can inflate the French mouth 50A through the connected first air supply hole 123, the first non-return chamber 124, the perforation 322, and the accommodating space 320, And the second valve 18 is pushed to close the second air supply hole 170. Furthermore, when the French mouth 50A is connected to the accommodating space 320, and the first inflating device 20 has not been installed in the present invention, the inside of the to-be-inflated part has The air pressure will automatically push the first valve 13 to close the first air supply hole 123, and push the second valve 18 to close the second air supply hole 170, so that the anti-reverse effect can be achieved, and then the large amount of air leakage of the inflatable parts can be effectively improved.

Please refer to FIG. 5 to see that the user chooses the embodiment in which the first pumping device 20 is used to inflate the Schrader 50B. When the Schrader 50B is inserted into the second threaded hole 340, the valve seat 40 is pushed to overcome the preset elastic force of the spring 46. When reaching the second position, the push rod 42 can simultaneously open the Schrader nozzle 50B, so that the first pumping device 20 can pass through the connected first air supply hole 123, the first non-return chamber 124, the perforation 322, the shallow groove 45, and the second perforation. 44 and the channel 43, and the American-style mouth 50B is filled with air, and the second valve 18 is pushed to close the second air supply hole 170. Further, when the American-style mouth 50B is connected to the channel 43, and the present invention has not yet installed the second air supply hole 170. When the inflator 20 is activated, the existing air pressure inside the inflatable part will automatically push the first valve 13 to close the first air supply hole 123, and push the second valve 18 to close the second air supply hole 170, so that the non-return can be achieved. function, thereby effectively improving the deflation situation of the inflatable parts.

Please refer to Fig. 6, the user chooses the embodiment in which the second pumping device 60 is used to inflate the French mouth 50A. 40 is positioned at the first position, so the second inflating device 60 can pass through the connected second air supply hole 170, the second non-return chamber 18, the diversion hole 164, the perforation 322, and the accommodating space 320, and the French mouth 50A Inflation action, and the first valve 13 is pushed to close the first air supply hole 123, and further, when the French mouth 50A is connected to the accommodating space 320, and the second inflating device 60 of the present invention has not yet inflated, the When the air pressure inside the inflatable element is established, the second valve 18 will be automatically pushed to close the second air supply hole 170 , and the first valve 13 will be pushed to close the first air supply hole 123 .

Please refer to FIG. 7 to see that the user selects the embodiment in which the second pumping device 60 is used to inflate the Schrader 50B. When the Schrader 50B is correspondingly inserted into the second screw hole 340, the valve seat 40 is pushed to overcome the preset elastic force of the spring 46. When the second position is reached, the push rod 42 can open the Schrader nozzle 50B, so that the second pumping device 60 can pass through the connected second air supply hole 170, the second check chamber 18, the diversion hole 164, the perforation 322, and the shallow groove 45. , the second perforation 44 and the channel 43, and the American-style nozzle 50B is filled with air, and the first valve 13 is pushed to close the first air supply hole 123. Further, when the American-style nozzle 50B is connected to the channel 43, and this When the second inflating device 60 is not inflated, the existing air pressure inside the inflatable part will automatically push the second valve 18 to close the second air supply hole 170 and push the first valve 13 to close the first air supply hole 123 .

To sum up, the present invention clearly can improve the troubles of the above-mentioned patents that cannot be compatible with external pumps or high-pressure gas cylinders, and can further eliminate the deflation of the parts to be inflated, and the overall configuration does not require additional manual switches. It is a technical concept A highly advanced invention shall meet the requirements for patent application, and the application shall be filed in accordance with the law.

The above-mentioned embodiments and drawings do not limit the form and style of the product of the present invention, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims (8)

1. A dual-purpose tuyere head for an American-style mouth and a French-style mouth, characterized in that it includes; A shell, which has a shaft hole that runs through both ends, and a first assembly part is arranged on the outer periphery. The first assembly part has a threaded section that can be screwed to the high-pressure gas cylinder, and is also provided with a connecting shaft hole that can provide high-pressure gas cylinder filling. The first air supply hole is equipped with a thimble that can pierce the cover of the high-pressure gas cylinder; the outer periphery of the shell is also provided with a second assembly part for the assembly of the pump, and the second assembly part is set There is a second air supply hole that communicates with the shaft hole and can provide air for the second pumping device; A rotating member, which has a shaft portion correspondingly pivoted on the shaft hole, and is provided with a first threaded hole for airtight insertion of a French mouth at one end, and a second threaded hole for airtight insertion of an American mouthpiece at the other end. Connecting hole, there is an accommodating space connected between the first and second screw connecting holes, and a perforation connecting the inside and outside of the accommodating space is provided, and an annular air channel connected to the perforated hole is recessed on the outer periphery of the shaft, and the annular air channel is connected to the connecting hole at the same time. Through the first and second air supply holes; A valve seat, which is displaced between a first position and a second position along the accommodating space. In the first position, the through hole and the first screw connection hole can be connected, and in the second position, the through hole can be connected with the second screw connection hole. sockets; and A spring is installed in the accommodating space to provide a preset elastic force for the valve seat to be positioned at the first position at any time. 2. As claimed in claim 1, the double-purpose tuyere head of American style nozzle and French nozzle is characterized in that: the shell is additionally equipped with a first valve for opening and closing the first air supply hole and a second valve for opening and closing the second air supply hole, and When the French mouth or the American mouth is deflated, the first valve can be pushed to close the first air supply hole, and the second valve can be used to close the second air supply hole. When the high-pressure gas cylinder is filled, the first valve is pushed to open the first air supply hole. When the second valve keeps closing the second air supply hole, when the inflator is inflated, the second valve is pushed to open the second air supply hole, and the first valve is made to close the first air supply hole. 3. As claimed in claim 2, the double-purpose air nozzle head of American nozzle and French nozzle is characterized in that: the first assembly part communicates with an annular hole installed with a leak-proof gasket at the inner end of the threaded section, and the inner end of the annular hole is connected with a There is a first air supply hole, and a first non-return chamber is formed at the junction of the first air supply hole and the shaft hole. The valve accommodates, and the shaft part of the rotating part limits the first valve to the first non-return chamber, so that the first valve can open and close the first air supply hole. 4. As claimed in claim 3, the double-purpose air nozzle head of American style nozzle and French nozzle is characterized in that: there is also a socket in the first air supply hole, and the socket is used for the installation of the thimble, and the thimble is provided with a sharp point within the range of the leak-proof gasket. Head, the socket and thimble do not block the communication state of the first air supply hole and the ring hole. 5. As claimed in claim 2 or 3, the double-purpose tuyere head of American-style nozzle and French-style nozzle is characterized in that: the second assembly part is coaxially equipped with an external thread area and an internal screw hole, and an inner screw hole is also installed with a An inner retainer, the inner retainer has a diversion hole that is permanently connected to the annular air passage, and an outer retainer is screwed in the inner screw hole, so that a permanently connected diverter hole can be defined between the inner retainer and the outer retainer The second non-return chamber, so that it can be installed by the second valve, and the outer block is also provided with a second air supply hole connected to the second non-return chamber, so that the second valve can limit the opening and closing of the second air supply hole . 6. As claimed in claim 5, the double-purpose tuyere head of American nozzle and French nozzle is characterized in that: the rotating part is provided with a radially outwardly expanded head at one end of the shaft, and the head can abut against one end of the shaft hole. The other end of the shaft part is provided with a threaded part, which can be combined with a nut, and the nut can abut against the other end of the shaft hole, so as to position the rotating part and the housing relatively. The other end is also coaxially provided with an accommodating space. As for the head, there is a first threaded hole that can communicate with the accommodating space. The diameter of the first threaded hole is smaller than that of the accommodating space. There is a level, and the nut is also provided with a second threaded hole that can communicate with the accommodating space; one end of the spring abuts against the shoulder, and the other end provides preset elastic force to the valve seat. 7. As claimed in claim 5, the double-purpose air nozzle head of American nozzle and French nozzle is characterized in that: the outer periphery of the valve seat is slid into the accommodation space with an anti-leakage ring, and a top is protruded from one end facing the direction of the second screw connection hole. and a shallow groove is provided on the outer circumference, and a second through hole is formed in the scope of the shallow groove, and a passage connecting the second through hole is provided on the side of the ejector rod. When the valve seat is in the second position, the ejector rod It is located away from the second threaded hole to connect the through hole, the shallow groove, the second through hole and the channel, but when the valve seat is in the first position, its push rod is in a position close to the second threaded hole, at this time the valve The shallow groove of the seat, the second through hole and the through hole are staggered, and are closed by the wall surface of the accommodation space, and the through hole directly passes through the accommodation space and is in a state of communication with the first screw connection hole. 8. The dual-purpose tuyere head of American nozzle and French nozzle according to claim 5, characterized in that: the air pump is composed of a cylinder body, a piston, a piston rod, an outer cover and a handle tube, and the cylinder body has a cylinder hole running through both ends, And one end of the cylinder hole is provided with an internal thread area that can be screwed into the external thread area. As for the piston, it is airtightly slid between the two ends of the cylinder hole, and a piston rod is connected to the piston, and the piston rod protrudes from the cylinder hole. One end, and the other end of the cylinder hole is equipped with an outer cover, and the outer cover supports the piston rod, so that the handle tube sleeved on the outer periphery of the cylinder can drive the piston rod through reciprocation, so that the piston can extract air in the cylinder hole, and then the second Fill the air supply hole.