TWM582530U - Inflator - Google Patents

Abstract

An inflator includes a tuyere, a cylinder mechanism, and an adjustment seat mechanism installed between the tuyeres and the cylinder mechanism. The cylinder mechanism includes a large cylinder and a communication tube fixed to the adjustment seat mechanism, a small cylinder sleeved between the large cylinder and the communication tube, a large end plug that closes the rear end of the small cylinder, and a one-way fixed to the large cylinder and sleeved against the small cylinder. The intake end plug, the two-way piston fixed to the small cylinder and the airtight plug against the large cylinder, the one-way piston fixed to the communication tube and the plug abutting in the small cylinder, and the rear side of the connecting tube and the one-way piston Check valve group. Through the structural design of the cylinder mechanism and the adjusting seat mechanism, the new type of pump can be switched between a double-intake state with a large inflation amount and a single-intake state with a labor-saving operation for high-pressure inflation, which is quite convenient and practical. Innovative design.

Description

Inflator

The present invention relates to a gas pumping device, and more particularly to a manual air pump.

At present, the manual-operated mini-inflator is usually held in one hand, and is pumped by the other hand, because it is small in size, so it is not convenient to hold the operation, such as the car pump disclosed in the mainland patent CN101737294. The front end of the inner tube of the racing pump is fixed to the inflation nozzle, and the outer tube is axially displaced relative to the inner tube for pumping. When the inner tube is held by one hand, the hand holding the inner tube must interfere. / The action of obstructing the outer tube from moving forward to the front limit position, the user does not normally operate the outer tube to generate the maximum stroke forward to the front limit position in order to avoid hitting the hand holding the inner tube when the outer tube is moved forward. As a result, the inflation performance is discounted. In addition, the above-mentioned air pump has only a single inflation mode, and emphasizes that it can be inflated with high pressure and effort. Therefore, there is no special consideration for the amount of inflation. For the low and medium pressure state at the initial stage of inflation, the demand for large air volume cannot be satisfied, so for the user, Still quite inconvenient.

Accordingly, it is an object of the present invention to provide an inflator that improves at least one of the disadvantages of the prior art.

Thus, the novel pump includes a tuyeres, an adjustment seat mechanism mounted on the tuyeres and switchable between a single intake state and a dual intake state, and a mounting mechanism mounted on the adjustment mechanism Cylinder mechanism. The cylinder mechanism includes a large cylinder with a front end extending radially inwardly and fixed to the adjusting seat mechanism with a front end thereof, a small cylinder and a connecting pipe fixed to the adjusting seat mechanism with a front end thereof, and a closed a large end plug at the rear end of the small cylinder, a one-way intake plug fixed to the rear end of the large cylinder and sleeved against the small cylinder, a two-way intake end fixed to the front end of the small cylinder and a gas-tight plug in the large cylinder a piston, a one-way piston connected to the rear end of the communication pipe and connected to the rear end of the communication pipe, and a rear check valve group installed between the communication pipe and the one-way piston.

When the cylinder mechanism is extended, a first space of the large cylinder draws outside air through the adjusting seat mechanism, and a second space of the large cylinder squeezes air into a third space of the small cylinder, and through the one-way A piston is injected into a fourth space of the small cylinder. When the cylinder mechanism is shortened, the one-way air intake plug and the rear check valve group are opened, and the second space inhales outside air via the one-way air intake plug, and the fourth space injects air through the one-way piston The communication tube is injected into the tuyeres, and the adjusting seat mechanism in the single intake state discharges air from the first space to the outside, and the adjusting seat mechanism in the dual intake state is from the first A space of air is injected into the tuyere.

The utility model has the advantages that the structural design of the cylinder mechanism and the adjusting seat mechanism enables the air pump of the present invention to be selectively switched to a large inflation dual-intake state when the inflated article is inflated, and the labor-saving operation can be performed. The single-intake state of high-pressure inflation is a very convenient and practical innovative design.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1, 2, and 3, an embodiment of the present invention is adapted to inflate an article to be inflated (not shown) such as, but not limited to, a tire or ball. The inflator 200 includes a tuyere 3, an adjustment mechanism 4 fixed to the tuyere 3, and a cylinder mechanism 5 extending forward and backward and fixed to the adjustment mechanism 4 at its front end. The tuyer head 3 is for mounting on the item to be inflated, and can be used to output a gas for inflating the item to be inflated. Since the wind mouth head 3 has many types and is not the focus of the novel creation, it will not be described in detail, and the implementation is not limited to the schema.

The adjuster mechanism 4 is operable to switch between a single intake state and a dual intake state, and includes an adjustment seat 40 fixed between the tuyer head 3 and the cylinder mechanism 5, and is mounted on A front check valve block 45, an exhaust switch block 46 and a one-way intake valve block 47 of the adjustment block 40.

Referring to FIGS. 3, 4, 5, and 9, the adjusting seat body 40 is internally provided with a first filling hole 41 and a second filling hole 42 extending forward and backward and communicating with the air nozzle head 3 and the cylinder mechanism 5. An exhaust hole 43 communicating with the cylinder mechanism 5 and the outside, and an intake hole 44 communicating with the outside and the cylinder mechanism 5 are connected.

The first filling hole 41 and the second filling hole 42 can introduce the gas from the cylinder mechanism 5 into the tuyer head 3. The second filling hole 42 has a large aperture section 422 and a small aperture section 421 extending forward and backward and communicating with the tuyer head 3 and the cylinder mechanism 5 respectively, and having different apertures. The exhaust hole 43 has a communication section 431 extending forwardly and backwardly to the cylinder mechanism 5, a small aperture portion 432 radially communicating with the communication section 431, and a coaxial extension from the small aperture portion 432 to the outside and the aperture is larger than the small aperture 432. The aperture portion 432 has a large aperture portion 433 having an aperture. The air inlet hole 44 has an outer communication section 442 extending forward and backward and communicating with the outside, and an inner communication section 441 extending back and forth to the cylinder mechanism 5 and having a larger diameter than the outer communication section 442.

The front check valve group 45 is mounted in the second gas filling hole 42 and is unidirectionally closed by the positive pressure gas from the cylinder mechanism 5 to close the second gas filling hole 42. The front check valve assembly 45 includes a check valve body 451 disposed in the large aperture section 422 and inserted into the small aperture section 421, and a hermetic gasket sleeved on the check valve body 451. 452, and an elastic member 453 disposed in the large aperture section 422. The elastic member 453 has a resilient force for pushing the check valve body 451 forward, which drives the check valve body 451 to move the airtight gasket 452 forward toward the small aperture section 421, so that the check valve body The 451 is sealed with the hermetic gasket 452 to hermetically seal the small aperture section 421.

The exhaust switch block 46 is operatively closed to close the exhaust hole 43, and includes a closed portion disposed in the large aperture portion 433 of the exhaust hole 43 and closing the radially outer opening of the small aperture portion 432. And a member 461, and an adjusting member 462 disposed outside the adjusting body 40. The adjusting member 462 has an adjusting ring portion 463 which is rotatably sleeved outside the adjusting seat body 40 and covers the exhaust hole 43 , and a radial protrusion protruding from the inner circumferential surface of the adjusting ring portion 463 . The embossing portion 464 is operable to be in a closed position (as shown in FIG. 4) for urging the closing member 461 radially inwardly with the pressing protrusion 464, and a pressing convex portion The portion 464 is disengaged from the rotational position of the closure member 461 (as shown in Figure 5).

When the adjusting seat mechanism 4 is to be adjusted to the dual air intake state, the adjusting member 462 can be adjusted to the closed position shown in FIG. 4, forcing the sealing member 461 to hermetically seal the small aperture portion 432, so that the The vent hole 43 cannot be vented, so that the front check valve group 45 can be driven to be opened by the positive pressure gas from the cylinder mechanism 5, so that the first venting hole 41 and the second filling hole 42 can be used to The positive pressure gas guide of the cylinder mechanism 5 is introduced into the tuyer head 3.

When the adjuster mechanism 4 is to be adjusted to the single intake state, the adjusting member 462 can be adjusted to the open position shown in FIG. 5 so that the closing member 461 can be pressurized by the positive pressure gas from the cylinder mechanism 5. The driving is easily opened, so that the exhaust hole 43 can be exhausted to the outside. At this time, the front check valve group 45 is not driven by the positive pressure gas, and the second filling hole 42 is continuously closed, so only the first The gas injection hole 41 can guide the positive pressure gas from the cylinder mechanism 5 into the tuyer head 3.

The one-way intake valve group 47 includes a valve member 471 that is disposed in the inner communication portion 441 so as to be movable back and forth, and a portion that is partially connected to the inner communication portion 441 and the cylinder mechanism 5 and disposed on the adjustment base 40 The valve member 471 is blocked in the communication member 472 in the inner communication portion 441. The valve member 471 can be driven by the positive pressure gas from the cylinder mechanism 5, and closes the outer communication portion 442 forward, and can be driven back by the negative pressure suction from the cylinder mechanism 5 to connect the intake holes 44. The outside is with the cylinder mechanism 5.

Referring to Figures 2, 3 and 6, the cylinder mechanism 5 includes a large cylinder 51 extending forward and backward with its front end fixed to the adjustment base 40, a small cylinder extending forwardly and forwardly inserted into the large cylinder 51. 52. A communication tube 53 extending forward and backward and having a front end fixed to the adjustment base 40 and inserted rearwardly into the small cylinder 52, a connecting portion fixed to the rear end portion of the small cylinder 52 and closing the rear end of the small cylinder 52 a large end plug 54, a grip tube 55 fixed to the large end plug 54 and extending outwardly from the rear end portion of the large cylinder 51, and a grip portion fixed to the rear end portion of the large cylinder 51 and sleeved thereon a one-way air inlet plug 57 outside the small cylinder 52, a two-way piston 56 fixed to the front end portion of the small cylinder 52 and a gas-tight plug between the large cylinder 51 and the communication tube 53, and a communicating with the communication tube 53 The one-way piston 58 fixed to the rear end portion of the communication pipe 53 and plugged into the small cylinder 52, and a rear check valve group 59 installed between the communication pipe 53 and the one-way piston 58. Since the large end plug 54 that closes the rear end of the small cylinder 52 is of a large number, it will not be described in detail.

The two-way piston 56 divides the interior of the large cylinder 51 into a first space 501 and a second space 502 which are respectively located on opposite sides of the front and rear sides thereof in the axial direction. The first space communicates with the small aperture section 421 of the second filling hole 42 and the connecting section 431 of the exhaust hole 43.

Referring to Figures 2, 7, and 10, the one-way air inlet plug 57 can unidirectionally communicate with the second space 502 and the outside, including a end fixed to the rear end of the large cylinder 51 and sleeved outside the small cylinder 52. Block 571, and a hermetic gasket 574 which is axially displaceable to the end block 571 and hermetically sleeves against the small cylinder 52. The end block 571 has an inner ring groove 572 recessed on the inner circumferential surface thereof for allowing the hermetic gasket 574 to be displaced forward and backward, and a plurality of recessed inner circumferential surfaces thereof and spaced around the axial center thereof The inner ring groove 572 extends rearward to the rear end thereof to communicate with the outer air intake channel 573. Further, the end block 571 is further provided with a communication channel connecting the second space 502 and the inner ring groove 572 (Fig. Not shown).

When the one-way air inlet plug 57 is moved forward relative to the small cylinder 52, as shown in FIG. 7, the airtight gasket 574 will be rearwardly restricted due to the frictional force of the inner circumferential surface of the small cylinder 52, and the valve will be closed. The air intake channel 573 is instructed to hermetically isolate the second space 502 from the outside. When the one-way air inlet plug 57 is moved backward relative to the small cylinder 52, as shown in FIG. 10, the airtight gasket 452 is forwardly restricted due to the frictional force, so that the inner ring groove 572 passes through the same. The intake passage 573 communicates with the outside, thereby allowing the second space 502 to communicate with the outside. The structure of the one-way air inlet plug 57 is not limited thereto.

The one-way piston 58 partitions the interior of the small cylinder 52 into a third space 503 and a fourth space 504 respectively on the opposite sides of the front and rear sides thereof, and the small cylinder 52 is radially connected to the first cylinder 504. The second space 502 and the through hole 520 of the third space 503. The one-way piston 58 includes a piston body 581 fixed to a rear end portion of the communication tube 53, and a gas that is axially movably sleeved on the piston body 581 and airtight against the inner circumferential surface of the small cylinder 52. Closed washer 585. The piston body 581 has a shaft hole 582 extending axially through the fourth space 504 and the communication tube 53, an outer ring groove 583 recessed on the outer circumferential surface thereof and being sleeved by the airtight gasket 585, and two outer ring grooves 583 The communication gap 584 of the outer ring groove 583 and the fourth space 504 extends axially.

When the one-way piston 58 is advanced relative to the small cylinder 52, as shown in FIG. 7, the airtight gasket 585 is moved back to the limit due to the frictional force of the inner circumferential surface of the small cylinder 52, so that the outer ring groove 583 The fourth space 504 is connected to the third space 503 and the fourth space 504 via the communication gaps 584. When the one-way piston 58 moves backward relative to the small cylinder 52, as shown in FIG. 10, the airtight gasket 585 is forwardly restricted due to the frictional force, and the piston body 581 and the small cylinder 52 are hermetically sealed. The gap between the three spaces 503 and the fourth space 504 is hermetically separated.

Since the one-way piston 58 that can be unidirectionally guided through the third space 503 and the fourth space 504 is of a large number, the implementation is not limited to the above structural aspect.

The rear check valve group 59 has an annular valve seat 591 disposed between the rear end of the communication tube 53 and the piston body 581 to communicate the communication tube 53 and the shaft hole 582, and a ring that can be displaced forward and backward. A check valve member 592 in the valve seat 591. The annular valve seat 591 has an inner diameter greater than the axial bore 582 of the piston body 581. The check valve member 592 is driven by the positive pressure gas in the communication tube 53 to abut against the piston body 581, and hermetically seals the shaft hole 582, that is, the airtight partition of the communication tube 53 and the The fourth space 504. The check valve member 592 is also driven to be opened by the positive pressure gas in the fourth space 504, and the annular valve seat 591 communicates with the communication tube 53 and the fourth space 504.

When the air pump 200 of the present invention is used, after the air nozzle head 3 is mounted on the object to be inflated, the user can operate the adjusting member 462 of the exhaust switch group 46 to select to switch the entire adjusting seat mechanism 4 to the single inlet. Gas state or the dual intake state. Then, the front end portion of the large cylinder 51 is held by one hand, and the grip tube 55 is held by the other hand, and then the grip tube 55 is reciprocally pulled back and forth with respect to the large cylinder 51 to perform a pumping operation.

Referring to FIGS. 6 and 7, in the process of pulling the grip tube 55 backward relative to the large cylinder 51, the small cylinder 52 will drive the two-way piston 56 to move backward relative to the large cylinder 51. The one-way intake plug 57 The one-way piston 58 is advanced relative to the small cylinder 52, the one-way air intake plug 57 is closed, and the one-way piston 58 is opened. During this process, the first space 501 will gradually become larger, and the second space 502 will gradually become smaller, the third space 503 will gradually become smaller and the fourth space 504 will gradually become larger. The first space 501 which gradually becomes larger generates a suction force for driving the one-way intake valve group 47 to be opened, and the outside air is taken in through the intake hole 44 as indicated by an arrow 901. And regardless of whether the adjusting seat mechanism 4 is in the dual intake state, the single intake state, the second space 502 is gradually compressed to inject internal air into the third space 503, and is compressed via the one-way piston 58. The function of injecting the fourth space 504 is as indicated by the arrow 901.

At this time, if the gas pressure in the fourth space 504 is less than the gas pressure in the communication pipe 53, the rear check valve group 59 is closed, and the fourth space 504 is pre-pressed to store the gas; When the gas pressure of the four spaces 504 is greater than the gas pressure in the communication pipe 53, the positive pressure gas in the fourth space 504 drives the rear check valve group 59 to open, and the communication pipe 53 will come from the fourth space 504. The positive pressure gas is introduced into the tuyer head 3 and can be used to inflate the article to be inflated.

When the two-way piston 56 is rearwardly biased against the one-way intake plug 57, the pump 200 has reached the maximum tensile limit. Then, the grip tube 55 is pushed forward relative to the large cylinder 51 to drive the small cylinder 52 forwardly into the large cylinder 51, so that the cylinder mechanism 5 is shortened until the two-way piston 56 is forwardly biased against the Adjust the seat structure, as shown in Figure 3.

Referring to Figures 8, 9, and 10, when the adjuster mechanism 4 is in the dual intake state, the exhaust switch block 46 closes the exhaust hole 43 where the small cylinder 52 is driven relative to the large cylinder. During the forward movement of 51, the one-way air inlet plug 57 is opened, and the one-way piston 58 is closed to hermetically separate the third space 503 from the fourth space 504, the first space 501 and the fourth space. The 504 will gradually shrink, and the second space 502 and the third space 503 will gradually become larger. The second space 502, which is gradually enlarged, draws in outside air through the one-way intake plug 57 and injects air into the third space 503, as indicated by arrow 902. The fourth space 504 which is gradually smaller compresses the internal air. When the internal gas pressure is greater than the gas pressure in the communication pipe 53, the rear check valve group 59 is driven to open, and the positive pressure gas is injected into the communication pipe. 53. The tuyere head 3 is injected through the first gas filling hole 41 as indicated by an arrow 902. At the same time, since the vent hole 43 is closed, the first space 501 which is gradually smaller also compresses the internal air, and when the gas pressure in the first space 501 is greater than the connection of the air nozzle head 3 When the internal gas pressure of the inflated object, the positive pressure gas in the first space 501 drives the front check valve group 45 to open, so that air is injected into the tuyer head 3 from the second gas filling hole 42 as indicated by arrow 902. Show the direction of the airflow.

Referring to FIGS. 11 and 12, when the adjuster mechanism 4 is in the single intake state, the exhaust switch group 46 is opened to no longer close the exhaust hole 43, so when the first space 501 is compressed, The positive pressure gas generated by the compression in the first space 501 drives the closing member 461 located in the exhaust hole 43 and is discharged from the exhaust hole 43 as indicated by the arrow 903. Therefore, only the first The air in the four spaces 504 is pressed into the communication tube 53, as indicated by the arrow 902, and the object to be inflated is inflated via the tuyere 3.

By the design that the adjusting seat mechanism 4 can be switched between the dual air intake state and the single air intake state, when the adjusting seat mechanism 4 is switched to the dual air intake state, the first space 501 and the fourth space are The compressed gas in the space 504 simultaneously inflates the object to be inflated, and is adapted to inflate with a large amount of air when the inside of the object to be inflated is in a medium and low air pressure state, thereby increasing the inflation speed. When the interior of the object to be inflated has been inflated for more than a predetermined pressure, and the small cylinder 52 is not easily pushed to perform the inflation operation, the adjustment mechanism 4 can be switched to the single intake state to be vented in the first space 501. The air is only inflated by compressing the air in the fourth space 504, so that the high-pressure inflation is more labor-saving and easy to operate.

In summary, the structural design of the cylinder mechanism 5 coupled to the adjusting seat mechanism 4 allows the grip tube to be held by the hand during the reciprocating drawing of the small cylinder 52 relative to the large cylinder 51. The 55 does not hit the other hand held at the front end portion of the adjusting seat mechanism 4 or the large cylinder 51 at all, so that the small cylinder 52 can be pushed to the front limit position to produce maximum inflation performance.

In addition, with the design that the adjusting seat mechanism 4 can be switched between the dual air intake state and the single air intake state, in the middle and low air pressure inflating stage of the object to be inflated, the adjusting seat mechanism 4 can be selectively adjusted to advance. The double-intake state with a large gas volume can be sequentially pushed and pulled, and a large amount of gas is compressed and injected into the object to be inflated, which can improve the charging efficiency in the low-pressure phase of the object to be inflated. When the object to be inflated has been inflated to a predetermined high pressure or higher, the adjusting seat mechanism 4 can be switched to the single intake state, so that the compressed gas in the first space 501 can be discharged through the exhaust hole 43 to reduce The resistance of the small cylinder 52 into the large cylinder 51 is made more labor-intensive when the object to be inflated is inflated at a high pressure. Therefore, the new type of inflator 200 is indeed a quite convenient and practical innovative design, and can indeed achieve the purpose of the novel.

However, the above is only the embodiment of the present invention. When the scope of the novel implementation cannot be limited thereto, all simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

200‧‧‧Inflator

3‧‧‧Wind mouth

4‧‧‧ Adjusting seat mechanism

40‧‧‧ Adjusting the seat

41‧‧‧First filling hole

42‧‧‧Second filling hole

421‧‧‧Small aperture section

422‧‧‧large aperture section

43‧‧‧ venting holes

431‧‧‧Connected segments

432‧‧‧Small aperture

433‧‧‧ Large aperture

44‧‧‧Air intake

441‧‧‧Interconnecting section

442‧‧‧ External connected segments

45‧‧‧ front stop valve group

451‧‧‧Return valve body

452‧‧‧ airtight gasket

453‧‧‧Flexible parts

46‧‧‧Exhaust switch group

461‧‧‧Closed

462‧‧‧Adjustment

463‧‧‧Adjustment ring

464‧‧‧Resist the convex part

47‧‧‧One-way intake valve block

471‧‧‧ valve parts

472‧‧‧Connecting parts

5‧‧‧Cylinder mechanism

501‧‧‧First space

502‧‧‧Second space

503‧‧‧ Third Space

504‧‧‧Fourth space

51‧‧‧ Large cylinder

52‧‧‧Small cylinder

520‧‧‧through holes

53‧‧‧Connected pipe

54‧‧‧Great End Plug

55‧‧‧ grip tube

56‧‧‧Two-way piston

57‧‧‧One-way intake plug

571‧‧‧End block

572‧‧‧ Inner ring groove

573‧‧‧Intake channel

574‧‧‧Airtight gasket

58‧‧‧One-way piston

581‧‧‧Piston body

582‧‧‧Axis hole

583‧‧‧ outer ring groove

584‧‧‧connection gap

585‧‧‧Airtight gasket

59‧‧‧Backstop valve group

591‧‧‧Ring valve seat

592‧‧‧Reversing valve parts

901‧‧‧ Airflow direction

902‧‧‧ Airflow direction

903‧‧‧ Airflow direction

Other features and effects of the novel will be apparent from the embodiments of the drawings, in which:  Figure 1 is a perspective view of an embodiment of the present invention;  Figure 2 is an exploded perspective view of the embodiment;  Figure 3 is an incomplete cross-sectional view of the embodiment;  Figure 4 is a cross-sectional view taken along line A-A of Figure 1, illustrating a state in which an exhaust switch group is in a closed position;  Figure 5 is a view similar to Figure 4, illustrating the situation when the exhaust switch block is in an open position;  Figure 6 is a cross-sectional view of the embodiment taken along line B-B, illustrating a case in which a grip tube is pulled backward relative to a large cylinder;  Figure 7 is a partial enlarged view of view 6;  Figure 8 is a view similar to Figure 6 illustrating the situation when an adjustment seat mechanism is in a dual intake state when the large cylinder is moved forward;  Figure 9 is a cross-sectional view taken along line C-C of Figure 1, illustrating the state in which the adjuster mechanism is in a dual intake state when the gripper tube is moved forward relative to the large cylinder;  Figure 10 is a partial enlarged view of Figure 8;  Figure 11 is a view similar to Figure 8 illustrating the situation when the adjustment seat mechanism is in a single intake state when the large cylinder is moved forward;  Figure 12 is a view similar to Figure 9 illustrating the condition in which the adjustment seat mechanism is in a single intake state when the large cylinder is moved forward.  

Claims (9)

An inflator comprising: a tuyere; an adjustment mechanism fixed to the tuyere and switchable between a single intake state and a dual intake state; and a cylinder mechanism including a front and rear extension and a radial direction a large cylinder with a front end fixed to the adjusting seat mechanism, a small cylinder and a connecting pipe fixed to the adjusting seat mechanism with a front end thereof, a large end plug closing the rear end of the small cylinder, and a first end sleeve a one-way intake plug fixed to the rear end of the large cylinder and sleeved against the small cylinder, a two-way piston fixed to the front end of the small cylinder and having a gas-tight plug in the large cylinder, and a fixed connection between the communication tube a one-way piston at the rear end of the communication tube and plugged into the small cylinder, and a rear check valve group installed between the communication tube and the one-way piston; when the cylinder mechanism is extended, one of the large cylinders The first space draws in outside air via the adjusting seat mechanism, a second space of the large cylinder squeezes air into a third space of the small cylinder, and injects a fourth of the small cylinder through the one-way piston When the cylinder mechanism is shortened, the one-way intake plug and the rear check valve group are opened, and the second space sucks outside air via the one-way intake plug, and the fourth space passes through the one-way piston Air is injected into the communication pipe to be injected into the tuyeres, and the adjusting seat mechanism in the single intake state discharges air from the first space to the outside, and the adjusting seat mechanism in the dual intake state will come from Air from the first space is injected into the tuyeres. The pump of claim 1, wherein the cylinder mechanism further comprises a pump It is fixed to the large end plug and can be sleeved relative to the grip tube outside the large cylinder. The pump of claim 1 or 2, wherein the adjuster mechanism includes an adjustment base fixed to the tuyer head and connecting the large cylinder and the communication tube, and a mounting body mounted to the adjustment base a front check valve group, an exhaust switch group and a one-way intake valve group, the adjustment seat body has a first gas supply hole connecting the wind mouth head and the communication pipe, and a communication nozzle and the first a second filling hole of a space, a venting hole connecting the first space and the outside, and an air inlet opening connecting the outside and the first space, the front check valve group being positive of the first space The second gas filling hole is unidirectionally closed by the pressure gas driving, and the exhaust switch group is operatively opened to close the venting hole, and the one-way air intake valve group is driven by the positive pressure gas of the first space Closing the air inlet hole, when the adjusting seat mechanism is in the single air intake state, the exhaust switch group is opened, the air exhausting hole can discharge air from the first space to the outside, and the adjusting seat mechanism is in the double air intake state The exhaust switch block is closed to the exhaust port. The pump of claim 3, wherein the venting hole has a communicating section axially communicating with the first space, a small aperture section radially communicating with the communicating section, and a coaxially communicating the small aperture section with a large aperture section having an outer diameter and a larger aperture than the aperture of the small aperture section, the exhaust switch set has a closure member disposed in the large aperture section and enclosing the small aperture section, and an adjustment member disposed on the adjustment base body When the adjusting seat mechanism is in the single air intake state, the closing member is urged radially inward by the adjusting member to close the small aperture portion, and the adjusting member is separated from the closed portion when the adjusting seat mechanism is in the double intake state Piece, The closure can be pushed by the positive pressure gas within the small aperture section. The pump of claim 4, wherein the adjusting member has an adjusting ring portion rotatably sleeved outside the adjusting seat and covering the exhaust hole, and a radial protrusion protruding from the adjusting ring The inner peripheral surface of the portion can be urged radially outward by the adjusting ring portion to urge against the pressing convex portion of the closing member. The pump of claim 3, wherein the second filling hole has a small aperture section extending back and forth to the first space, and a diameter larger than the small aperture section and communicating the air nozzle head and the small aperture section a large aperture section, the front check valve group includes a check valve body disposed in the large aperture section and inserted in the small aperture section, a hermetic gasket sleeved on the check valve body, and An elastic member disposed in the large-aperture section, the elastic member constantly having an elastic force for driving the non-return valve body to a small aperture portion such that the check valve body cooperates with the airtight gasket to close the small aperture portion. The pump of claim 3, wherein the air inlet hole has a large aperture section communicating with the first space, and a small aperture section having a smaller aperture than the large aperture section and communicating the large aperture section with the outside, The one-way intake valve block includes a valve member movably disposed in the large aperture section and drivable by the positive pressure gas of the first space to close the small aperture section, and a partial connection between the large aperture section and The first space is disposed on the adjustment seat and limits the valve member to a communication member in the large aperture section. The pump of claim 1, wherein the one-way piston includes a piston body fixed to a rear end portion of the communication tube and having a shaft hole axially extending through the fourth space, and an axially movable portion a hermetic gasket placed on the piston body and airtight against the inner circumferential surface of the small cylinder, the piston body An outer ring groove recessed on an outer circumferential surface thereof for receiving the airtight gasket, and a communication gap extending axially extending between the outer ring groove and the fourth space, the airtight gasket being opposite to the piston body The small cylinder closes the communication gap when moving backward, and opens the communication gap when the piston body moves forward relative to the small cylinder, so that the third space communicates with the fourth space, and the rear check valve group has a communication An annular valve seat between the communication tube and the shaft hole, and a check valve member disposed in the valve seat and being slidably opened by the positive pressure gas of the fourth space to close the shaft hole. The pump of claim 1, wherein the one-way intake plug includes an end block fixed to a rear end of the large cylinder and sleeved outside the small cylinder, and one disposed on an inner circumference side of the end block And airtightly sleeved against the airtight gasket of the small cylinder, the inner circumferential surface of the end block is recessed with an inner ring groove for axially displaceably the airtight gasket, and has an axial extension communicating with the inner ring a ring groove and an outer air intake channel. When the one-way air inlet plug moves forward relative to the small cylinder, the airtight gasket closes the air intake channel, and the one-way air inlet plug moves backward relative to the small cylinder The airtight gasket opens the air intake channel, and the second space communicates with the air intake channel through the inner ring groove.