CN213598132U

CN213598132U - Air charging and discharging device

Info

Publication number: CN213598132U
Application number: CN202022037535.XU
Authority: CN
Inventors: 汪琛玮; 吴旭; 陈贵海; 刘际; 李骜; 阎雪波; 杨真; 林军; 王瑜; 孙红娟
Original assignee: Hefei Lanzhou Intelligent Technology Co ltd
Current assignee: Hefei Lanzhou Intelligent Technology Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-07-02
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses an inflation and deflation device, including the pump and with the gas circuit switching-over valve of pump intercommunication, have the gas circuit and the gassing gas circuit of aerifing that can switch each other in the gas circuit switching-over valve, the pump is switched through the gas circuit in the gas circuit switching-over valve and is realized aerifing or exitting, the pump includes: the piston cylinder comprises a cylinder body, a piston and a piston rod, wherein the piston is provided with an air passage; the driving assembly is used for driving the piston to move in a reciprocating manner; the first elastic sealing component has an outward expansion state for opening the air channel when the piston cylinder inhales air and a closed state for closing the air channel when the piston cylinder exhausts air; and a second elastic sealing component which has a closed state for closing the air outlet of the cylinder body when the piston cylinder sucks air and an open state for opening the air outlet of the cylinder body when the piston cylinder exhausts air. The utility model provides a gas circuit switching-over valve cooperation pump uses and aerifys gas circuit and gassing gas circuit through switching, both can aerify the gasbag and can be to the gasbag gassing, not only can control cost, still has convenient operation, uses nimble characteristics.

Description

Air charging and discharging device

Technical Field

The utility model relates to an inflation equipment technical field specifically is a fill aerating device that not only can realize aerifing but also can realize gassing is related to.

Background

The portable inflatable water platform has the characteristics of light weight, multifunction, easiness in disassembly and assembly and easiness in storage, and is widely applied to projects such as water entertainment, water sports activities, wharf engineering, water commercial performances and the like.

The portable inflatable water platform comprises a bearing platform and an air bag connected with the bearing platform and used for providing buoyancy, the air bag needs to be inflated when the portable inflatable water platform is used, and the air in the air bag needs to be discharged when the portable inflatable water platform is carried and stored.

At present, in order to inflate and deflate the airbag, different devices are often required to be equipped, for example, an inflator pump and a vacuum pump are arranged on the bearing platform, the airbag is inflated through the inflator pump, and the airbag is deflated through the vacuum pump, so that the defect of inconvenient operation is overcome, and the cost is increased invisibly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an inflation and deflation device can enough realize aerifing the gasbag and can realize the gasbag gassing again.

Therefore, the utility model adopts the following technical scheme:

the utility model provides an inflation and deflation device, including the pump and with the gas circuit switching valve of pump intercommunication, have in the gas circuit switching valve and be used for the gas circuit of aerifing of gasbag and be used for the gassing gas circuit of gasbag gassing, the pump passes through the gas circuit of aerifing the gas circuit in the gas circuit switching valve and gassing gas circuit switches and realizes aerifing or deflating, the pump includes: the piston cylinder comprises a cylinder body, a piston and a piston rod, wherein the piston divides an inner cavity of the cylinder body into an air inlet cavity and an air outlet cavity, and an air passage communicated with the air inlet cavity and the air outlet cavity is formed in the piston; the driving assembly is connected with the piston rod and used for driving the piston to move in a reciprocating mode; the first elastic sealing component is arranged on the piston in an openable and closable mode and has an outwards-opened state for opening the air passage when the piston cylinder inhales air and a closed state for closing the air passage when the piston cylinder exhausts air; and the second elastic sealing component is arranged at the air outlet of the cylinder body and has a closed state of closing the air outlet of the cylinder body when the piston cylinder inhales air and an open state of opening the air outlet of the cylinder body when the piston cylinder exhausts air.

Further, the driving assembly comprises a first driving motor and a balance driving wheel arranged on a motor shaft of the first driving motor, wherein two ends of the piston rod are respectively hinged with the piston and the balance driving wheel, the balance driving wheel is a cam, and the piston rod is connected to one end of the cam, which is deviated from the mass center of the cam.

Furthermore, the inflator pump is a double-cylinder piston pump and comprises two piston cylinders, pistons in the two piston cylinders are driven by the driving assembly, the first driving motor is a double-output-shaft motor, and the two balance driving wheels are arranged on two motor shafts of the double-output-shaft motor respectively.

Furthermore, the air passage is composed of a plurality of air holes distributed along the circumferential direction of the piston, the first elastic sealing component is a rubber baffle piece attached to the front end face of the piston, and the center of the rubber baffle piece is fixed on the piston.

Further, an air outlet joint is arranged at an air outlet of the cylinder body, the second elastic sealing part is arranged in the air outlet joint, and the second elastic sealing part comprises a sealing plug head and a spring used for resetting the sealing plug head.

Furthermore, a groove is formed in the periphery of the piston, and a piston ring is embedded in the groove.

Further, the gas circuit directional control valve includes: a valve body; the valve core is movably arranged in the valve body and is provided with an inflation position for communicating the inflation gas path and blocking the deflation gas path and a deflation position for communicating the deflation gas path and blocking the inflation gas path; and the driving unit is arranged in the valve body and used for driving the valve core to move, and comprises a push rod assembly connected with the valve core and a second driving motor connected with the push rod assembly, wherein the valve core moves in a reciprocating mode through the steering switching of the second driving motor so as to realize the position switching between an inflation position and a deflation position.

Further, be equipped with on the valve body and be used for communicateing the first interface of gasbag breather, be used for the intercommunication the second interface of inflator pump gas outlet, with the air inlet and the gas vent of external intercommunication and be used for with the blow vent of inflator pump induction port intercommunication, wherein, gaseous process in proper order when the gasbag is inflated air inlet, blow vent, inflator pump chamber, second interface, first interface, gaseous process in proper order when the gasbag is deflated first interface, blow vent, inflator pump chamber, second interface, gas vent.

Furthermore, a photoelectric sensing device for detecting the position of the valve core is arranged in the valve body.

Furthermore, the air charging and discharging device also comprises a housing, and the air path reversing valve and the inflator pump are both arranged in the housing.

The utility model discloses following beneficial effect has:

(1) the utility model discloses an have two gas circuits of gas circuit and gassing gas circuit in the gas circuit switching-over valve, gas circuit switching-over valve cooperation pump uses through switching these two gas circuits, both can realize aerifing the gasbag and can realize deflating the gasbag again, so only need be equipped with this one set of device on portable inflatable water platform can, need not to be equipped with special gassing equipment again, not only can reduce cost, still have convenient operation, use nimble characteristics.

(2) The utility model provides an inflator pump adopts double-cylinder piston pump, has high pressure, large-traffic advantage, can improve and fill gassing efficiency, simultaneously, adopts the volume that double-cylinder structure can this device of restriction of at utmost under the prerequisite that possesses such advantage, has compact structure's characteristics to can not influence portable inflatable water platform's portable performance.

(3) The utility model discloses in transmit drive power to the piston rod through balanced drive wheel, balanced drive wheel is the cam structure, the piston rod is connected in the one end that deviates from its barycenter of this cam, so in the motion process balanced drive wheel has the counter weight effect, can obtain dynamic balance when rotatory, and this centrifugal force that has reduced production when rotatory to can reduce the vibration that produces because of centrifugal force.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of an external structure of an air charging and discharging device according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of an air charging and discharging device according to an embodiment of the present invention;

fig. 3 is an exploded view of an embodiment of the present invention;

fig. 4 shows the internal structure of the piston cylinder in the present invention;

fig. 5 shows the main structure of the piston in the present invention;

FIG. 6a is a schematic view of the piston cylinder at the beginning of inspiration;

FIG. 6b is a schematic view of the piston cylinder during a suction event;

FIG. 6c is a schematic view of the piston cylinder at the end of inspiration;

FIG. 7a is a schematic view of the piston cylinder beginning to vent;

FIG. 7b is a schematic view of the piston cylinder during venting;

FIG. 7c is a schematic view of the piston cylinder at the end of venting;

FIG. 8 is an assembly view of the connection of the outlet port of the inflator to the second port of the air passage directional control valve;

FIG. 9 is an exploded view of the structure of the gas-path directional control valve of the present invention;

FIG. 10 illustrates the main structure of the valve body in the gas circuit directional control valve;

FIG. 11 is a diagram of the gas path directional control valve when used for inflating a gas bag;

FIG. 12 is a diagram of the air passages of the air passage directional control valve when used for deflation of the air bag;

FIG. 13 is a view showing the air passages of the present inflation/deflation device during inflation of the air bag; and

fig. 14 is a gas path diagram of the inflation and deflation device when the air bag is deflated.

Description of the reference numerals

1. A gas path directional control valve; 10. A valve body;

11. a first interface; 12. A second interface;

13. an air inlet; 14. An exhaust port;

15. a vent; 16. An accessory placement cavity;

2. a valve core; 31. A push rod assembly;

311. a push rod; 312. A moving block;

313. a guide member; 32. A second drive motor;

33. a mounting frame; 4. A central shaft;

5. a photoelectric sensing device; 6. An inflator pump;

61. a piston cylinder; 611. A cylinder body;

612. a piston; 6121. An airway;

6122. a piston ring; 613. A piston rod;

62. a drive assembly; 621. A first drive motor;

622. a balance driving wheel; 63. A first elastic sealing member;

64. a second elastic sealing member; 641. Sealing the plug head;

642. a spring; 7. An air outlet joint;

8. a housing; 9. A three-way joint.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 5 and 8 to 14, the utility model discloses an inflation and deflation device include pump 6, with gas circuit directional control valve 1 and housing 8 of pump 6 intercommunication, wherein, gas circuit directional control valve 1 and pump 6 all install in housing 8, have in the gas circuit directional control valve 1 and be used for the gas circuit of aerifing of gasbag and be used for the gassing gas circuit of gasbag gassing, pump 6 passes through the gas circuit of gas circuit and gassing gas circuit switches in the gas circuit directional control valve 1 and realizes aerifing the gasbag or deflating the gasbag.

As shown in fig. 1 to 4, the inflator 6 is a double cylinder piston pump including two piston cylinders 61 and a drive assembly 62.

Each piston cylinder 61 comprises a cylinder body 611, a piston 612 and a piston rod 613, the piston 612 divides an inner cavity of the cylinder body 611 into two chambers, namely an air inlet chamber and an air outlet chamber, an air passage 6121 communicating the air inlet chamber and the air outlet chamber is arranged on the piston 612, the air passage 6121 is composed of a plurality of air holes uniformly distributed along the circumferential direction of the piston 612, and the pistons 612 in the two piston cylinders 61 are driven by the driving assembly 62.

The driving assembly 62 includes a first driving motor 621 and a balance driving wheel 622 for balance driving, the first driving motor 621 adopts a brushless double-output shaft motor with a large torque, two balance driving wheels 622 are provided, and are respectively fixed on two motor shafts of the brushless double-output shaft motor by jackscrews, and the two balance driving wheels 622 are respectively and correspondingly connected with one of the piston rods 613 to drive the piston 612 to move in a reciprocating manner.

Specifically, needle bearings are mounted at the front end and the rear end of the piston rod 613 respectively in an interference fit manner, the front end of the piston rod 613 is connected to the piston 612 in an articulated manner by a setscrew, the rear end of the piston rod 613 is connected to the balance transmission wheel 622 in an articulated manner by a setscrew, the balance transmission wheel 622 is of a cam structure, the center of mass of the balance transmission wheel 622 is not located with the center of rotation thereof, and the rear end of the piston rod 613 is connected to the end of the balance transmission wheel 622 away from the center of mass thereof. The connection point of the piston rod 613 and the balance driving wheel 622, the center of rotation of the balance driving wheel 622, and the center of mass of the balance driving wheel 622 are located on a straight line.

As shown in fig. 2 to 4, 13 and 14, the two balance transmission wheels 622 are installed in opposite directions, so that the two piston cylinders 61 can suck air and discharge air one by one when the brushless double-output shaft motor is driven, and the air bag can be continuously inflated and deflated.

The front end face of the piston 612 is provided with a first elastic sealing part 63, and the first elastic sealing part 63 can be opened and closed, so that the first elastic sealing part 63 has an outward-opening state for opening the air passage 6121 when the piston cylinder 61 sucks air and a closed state for closing the air passage 6121 when the piston cylinder 61 exhausts air.

A second elastic sealing component 64 is arranged at the air outlet of the cylinder body 611, and the second elastic sealing component 64 has a closed state for closing the air outlet of the cylinder body 611 when the piston cylinder 61 sucks air and an open state for opening the air outlet of the cylinder body 611 when the piston cylinder 61 exhausts air.

Furthermore, the first elastic sealing component 63 is a rubber baffle piece attached to the front end face of the piston 612, a placing column is arranged on the front end face of the piston 612, the rubber baffle piece is sleeved on the placing column, a baffle ring used for abutting against and pressing the central portion of the rubber baffle piece to be fixed is further arranged on the placing column, the baffle ring is hot-pressed with the placing column, the central portion of the rubber baffle piece is fixed after the baffle ring is hot-pressed, but the outer edge portion of the rubber baffle piece can be opened and closed under the action of gas pressure, and further the opened state and the closed state are achieved.

As shown in fig. 1 to 5 and 8 to 14, an air outlet joint 7 is installed at the air outlet of the cylinder 611, the second elastic sealing member 64 is disposed in the air outlet joint 7, the second elastic sealing member 64 includes a sealing plug 641 for closing the air outlet of the cylinder 611 and a spring 642 for restoring the sealing plug 641, wherein a spring placing hole is formed in the air outlet joint 7, the cross section of the sealing plug 641 is T-shaped, and the T-shaped sealing plug 641 is sleeved in the spring 642. When the piston cylinder 61 sucks air, the sealing plug 641 closes the air outlet of the cylinder body 611 under the action of the elastic force of the spring 642, and when the piston cylinder 61 exhausts air, the air pressure in the cylinder body 611 pushes the sealing plug 641 open due to the fact that the air pressure is larger than the elastic force of the spring 642, so that the air outlet of the cylinder body 611 is opened.

The first elastic sealing member 63 and the second elastic sealing member 64 are simple in structure and obvious in function, and can ensure normal use of the inflator 6.

The utility model provides an inflator pump 6 adopts double-cylinder piston pump, has high pressure, large-traffic advantage, can improve and fill gassing efficiency, simultaneously, adopts the volume that double-cylinder structure can this device of restriction of at utmost under the prerequisite that possesses such advantage, has compact structure's characteristics to can not influence portable inflatable water platform's portable performance.

The utility model discloses in transmit drive power to piston rod 613 through balanced drive wheel 622, balanced drive wheel 622 is the cam structure, piston rod 613 is connected in the one end that deviates from its barycenter of this cam, so in the motion process balanced drive wheel 622 has the counter weight effect, can obtain dynamic balance when rotatory, and this has reduced the centrifugal force that produces when rotatory to can reduce the vibration that produces because of centrifugal force.

As shown in fig. 3 to 5, two grooves are formed on the periphery of the piston 612, piston rings 6122 are embedded in the grooves, and lubricating oil is further injected into the grooves. The piston ring 6122 is in contact with the inner wall of the cylinder body, so that lubricating oil can be adjusted, the lubricating effect is guaranteed, the piston 612 is prevented from being in direct contact with the inner wall of the cylinder body, the piston can be prevented from knocking the cylinder, and the effects of reducing friction and reducing noise are achieved.

As shown in fig. 3 and 9 to 12, in the present invention, the gas circuit directional control valve 1 includes a valve body 10, a valve element 2 movably disposed in the valve body 10, a driving unit for driving the valve element 2 to move, and a photoelectric sensing device 5 for detecting the position of the valve element 2, wherein the valve body 10 is provided with an accessory placing cavity 16, and the driving unit and the photoelectric sensing device 5 are both disposed in the accessory placing cavity 16.

The valve body 10 is internally provided with an inflation gas path for inflating the air bag and a deflation gas path for deflating the air bag, and the valve core 2 is driven by the driving unit to be provided with an inflation position for communicating the inflation gas path and blocking the deflation gas path and a deflation position for communicating the deflation gas path and blocking the inflation gas path; the driving unit includes a push rod assembly 31 connected to the valve core 2 and a second driving motor 32 connected to the push rod assembly 31.

The direction of the valve core 2 is changed by 180 degrees when the rotation direction of the second driving motor 32 is switched in the forward and reverse directions, and the valve core 2 moves in a reciprocating manner by switching the rotation direction of the second driving motor 32, so that the valve core 2 is switched between the inflation position and the deflation position.

The motor shaft of the second driving motor 32 is a screw shaft. The push rod assembly 31 includes a push rod 311, a moving block 312 in threaded connection with a threaded shaft of the second driving motor 32, and a guide member 313 for guiding the moving block 312 to move linearly, wherein the moving block 312 has an insertion hole for placing the push rod 311, the front end of the push rod 311 is detachably connected to the valve core 2 in a threaded connection manner, and the rear end of the push rod 311 is inserted into the insertion hole of the moving block 312. When the second driving motor 32 works, the threaded shaft rotates, the moving block 312 moves along the axial direction of the threaded shaft under the guiding and limiting action of the guiding component 313, and the moving block 312 drives the push rod 311 to move, so as to drive the valve core 2 to move.

Above-mentioned push rod assembly 31 has simple structure, easy dismounting's advantage.

The valve core 2 is integrally dumbbell-shaped, thick at two ends and thin in the middle, the two ends of the valve core 2 are used for blocking an air path, sealing rings are arranged at the two ends of the valve core 2, and a threaded hole used for connecting the push rod 311 is formed in the middle of the valve core 2.

The second driving motor 32 adopts a miniature speed reducing motor with the model number of N20, the miniature speed reducing motor can avoid overlarge volume and overweight quality of the reversing valve, and the miniature speed reducing motor also has the characteristics of large torsion and low rotating speed, so that the stability of the movement of the valve core can be ensured, and the power drive of the valve core can be ensured.

As shown in fig. 3 and 9, the driving unit further includes a mounting bracket 33, the mounting bracket 33 may be connected to the accessory placing chamber 16 by screws, and the second driving motor 32 is mounted on the mounting bracket 33.

As shown in fig. 9, the guide members 313 are two guide rods. The two guide rods are connected to the mounting frame 33 and penetrate the moving block 312 to guide the moving block 312 to move linearly. The two guide rods are arranged up and down, so that the moving block 312 can be prevented from rotating, the structure is simple, and the disassembly and the assembly are convenient.

Photoelectric sensing device 5 is installed on mounting bracket 33, photoelectric sensing device 5 includes the circuit board and locates the photoelectric switch on the circuit board, photoelectric switch is equipped with two, and two photoelectric switches are used for detecting whether case 2 is located inflation position and gassing position respectively. Specifically, a stopper is arranged on the moving block 312, when the valve core 2 reaches the inflation position, the stopper on the moving block 312 triggers one of the photoelectric switches, and when the valve core 2 reaches the deflation position, the stopper on the moving block 312 triggers the other photoelectric switch. The photoelectric sensing device 5 can realize accurate and automatic control on the movement of the valve core 2.

In order to further ensure the stability and smoothness of the movement of the valve element 2, a central shaft 4 for guiding the movement of the valve element 2 is further arranged in the valve body 10, the valve element 2 is of a hollow structure, and the valve element 2 is movably sleeved on the central shaft 4. And a central shaft left fixed end cover and a central shaft right fixed end cover for fixing the central shaft 4 are respectively arranged at two ends of the central shaft 4.

Specifically, as shown in fig. 2 and 9 to 14, the valve body 10 is provided with a first port 11 for communicating with an air vent of the airbag, a second port 12 for communicating with an air outlet of the inflator 6, an air inlet 13 and an air outlet 14 for communicating with the outside atmosphere, and a vent 15 for communicating with an air inlet of the inflator 6. Wherein, the air vent has been seted up on the left fixed end cover of center pin and the right fixed end cover of center pin, the air vent on the fixed end cover in center pin left side and the fixed end cover in center pin right side forms above-mentioned gas vent 14 and air inlet 13 respectively.

As shown in fig. 11, when the valve core 2 is located at the inflation position, the air inlet 13 is communicated with the air vent 15, the air outlet 14 is closed, the first port 11 is blocked from the air vent 15, and the second port 12 is communicated with the first port 11; as shown in fig. 12, when the valve element 2 is in the air bleeding position, the air inlet 13 is closed, the second port 12 and the first port 11 are blocked, the first port 11 and the air vent 15 are communicated, and the second port 12 and the exhaust port 14 are communicated.

As shown in fig. 2, 11 and 13, the air path flow of the airbag during inflation is as follows:

the outside atmospheric gas enters the valve body 10 from the gas inlet 13, then enters the left and right cylinders of the inflator 6 from the vent hole 15, is compressed by the two cylinders of the inflator 6, then merges and enters the second port 12, and then enters the airbag through the first port 11.

Referring to fig. 2, 12 and 14, the air path flow of the air bag when deflated is as follows:

the gas in the airbag is pumped into the two cylinders of the inflator 6 through the first port 11 and the vent 15 in sequence, the gas passing through the two cylinders of the inflator 6 is compressed and then flows into the second port 12, and finally is discharged into the atmosphere through the exhaust port 14.

In one embodiment, as shown in fig. 8, the first port 11 is provided with two air nozzles for connecting the left air bag and the right air bag on the platform.

The utility model provides a gas circuit switching-over valve orders about the case through changing turning to of second driving motor and makes reciprocating type removal, and then realizes the switching of gas circuit, and the switching mode is simple and convenient, simple structure, design benefit, and is favorable to realizing automated control.

The utility model provides a housing 8 includes lower plate, side riser and upper cover plate, the sealed processing is done through coating sealant and setting up the high density sponge in the junction of lower plate and side riser, the sealed processing is also done through coating sealant and setting up the high density sponge in the junction of side riser and upper cover plate.

And the air path reversing valve 1 and the inflator pump 6 are both arranged on the lower bottom plate.

Referring to fig. 1, 2 and 8, the two air outlet joints 7 of the inflator 6 are communicated with the second interface 12 of the air passage directional control valve 1 through a three-way joint 9, and specifically, the three-way joint 9, the two air outlet joints 7 and the second interface 12 are connected together through silicone tubes.

The inflator will be described in further detail below in connection with an intake process and an exhaust process of the inflator.

And (3) a gas suction process: as shown in fig. 6a and 6b, the first driving motor 621 rotates to drive the piston 612 to move backward from the front dead center position shown in fig. 6a through the balance transmission wheel 622 and the piston rod 613, at this time, the internal space of the cylinder in front of the piston 612 will cause a decrease in air pressure due to an increase in volume, at this time, the air outlet of the cylinder will be closed and blocked by the sealing plug 641 (air cannot be fed from the air outlet), and the air behind the piston 612 will pass through the air passage 6121 and push the outer edge portion of the rubber stopper into the cylinder in front of the piston 612 to suck air until the piston 612 reaches the back dead center position shown in fig. 6c, and the air suction is finished.

And (3) an exhaust process: as shown in fig. 7a and 7b, after the air suction is finished, the first driving motor 621 continues to rotate, the piston 612 is driven by the balance transmission wheel 622 and the piston rod 613 to move forward from the back dead center position shown in fig. 7a, at this time, the internal space of the cylinder in front of the piston 612 is compressed due to the volume reduction, so that the air pressure rises, the compressed air presses the rubber stopper against the front end surface of the piston 612 backward to close the air passage, when the air pressure rises to a certain pressure, the sealing plug 641 at the air outlet of the cylinder is pushed open, the air flows into the air passage reversing valve along with the air stopper, the air exhaust is realized, and the air exhaust is finished until the piston 612 reaches the front dead center position shown in fig. 7 c.

The air path reversing valve 1 can realize the air inflation and deflation of the air bag by reversing the air path.

The utility model discloses an it aerifys two gas circuits of gas circuit and gassing gas circuit to have in the gas circuit directional control valve 1, gas circuit directional control valve 1 cooperation pump 6 uses through switching these two gas circuits, both can realize aerifing the gasbag and can realize deflating the gasbag again, so only need be equipped with this one set of device on portable inflatable water platform can, need not to be equipped with special gassing equipment again, not only can reduce cost, still have convenient operation, use nimble characteristics.

Can take out the gas in the gasbag totally through this device to be convenient for accomodate above-mentioned portable inflatable platform on water, guaranteed portable inflatable platform on water's portability.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a charge and discharge device, its characterized in that, including pump (6) and with gas circuit directional control valve (1) of pump (6) intercommunication, have in gas circuit directional control valve (1) and be used for the gas circuit of aerifing of gasbag and be used for the gassing gas circuit of gasbag gassing, pump (6) pass through the gas circuit of aerifing gas circuit in gas circuit directional control valve (1) and gassing gas circuit switches and realizes aerifing or deflating, pump (6) include:

the piston cylinder (61) comprises a cylinder body (611), a piston (612) and a piston rod (613), wherein the piston (612) divides an inner cavity of the cylinder body (611) into an air inlet cavity and an air outlet cavity, and the piston (612) is provided with an air passage (6121) which is communicated with the air inlet cavity and the air outlet cavity;

a drive assembly (62) connected to the piston rod (613) for driving the piston (612) in a reciprocating motion;

the first elastic sealing component (63) is arranged on the piston (612) in an openable and closable mode and has an outwards-opened state for opening the air passage (6121) when the piston cylinder (61) inhales air and a closed state for closing the air passage (6121) when the piston cylinder (61) exhausts air; and

and a second elastic sealing member (64) which is provided at the air outlet of the cylinder body (611) and has a closed state in which the air outlet of the cylinder body (611) is closed when the piston cylinder (61) sucks air and an open state in which the air outlet of the cylinder body (611) is opened when the piston cylinder (61) discharges air.

2. Charging and discharging device according to claim 1, wherein the driving assembly (62) comprises a first driving motor (621) and a balance transmission wheel (622) arranged on the motor shaft of the first driving motor (621), wherein the two ends of the piston rod (613) are respectively connected with the piston (612) and the balance transmission wheel (622) in a hinged manner, the balance transmission wheel (622) is a cam, and the piston rod (613) is connected to the end of the cam which is away from the center of mass of the cam.

3. Charging and discharging device according to claim 2, wherein the inflator pump (6) is a double-cylinder piston pump comprising two piston cylinders (61), and the pistons (612) in the two piston cylinders (61) are both driven by the driving assembly (62), wherein the first driving motor (621) is a double-output-shaft motor, and two balance transmission wheels (622) are provided and are respectively arranged on two motor shafts of the double-output-shaft motor.

4. The inflation and deflation device according to claim 1, wherein the air passage (6121) comprises a plurality of air holes distributed along the circumference of the piston (612), the first elastic sealing member (63) is a rubber stopper attached to the front end surface of the piston (612), and the center of the rubber stopper is fixed on the piston (612).

5. Charge and discharge device according to claim 1, wherein an air outlet joint (7) is provided at the air outlet of the cylinder (611), the second elastic sealing member (64) is provided inside the air outlet joint (7), and the second elastic sealing member (64) comprises a sealing plug (641) and a spring (642) for returning the sealing plug (641).

6. The inflation and deflation device according to claim 1, wherein a groove is provided on the periphery of the piston (612), and a piston ring (6122) is fitted in the groove.

7. Charge and discharge device according to claim 1, wherein the gas circuit directional control valve (1) comprises:

a valve body (10);

the valve core (2) is movably arranged in the valve body (10) and is provided with an inflation position for communicating the inflation gas path and blocking the deflation gas path and a deflation position for communicating the deflation gas path and blocking the inflation gas path; and

the driving unit is arranged in the valve body (10) and used for driving the valve core (2) to move, and comprises a push rod assembly (31) connected with the valve core (2) and a second driving motor (32) connected with the push rod assembly (31),

wherein the valve core (2) is moved in a reciprocating manner by the steering switching of the second driving motor (32) to realize the position switching between the inflation position and the deflation position.

8. The inflation and deflation device of claim 7, wherein the valve body (10) is provided with a first port (11) for communicating with an air vent of the airbag, a second port (12) for communicating with an air outlet of the inflator (6), an air inlet (13) and an air outlet (14) which are communicated with the outside, and a vent (15) for communicating with an air suction port of the inflator (6), wherein when the airbag is inflated, air sequentially passes through the air inlet (13), the vent (15), the pump cavity of the inflator (6), the second port (12) and the first port (11), and when the airbag is deflated, air sequentially passes through the first port (11), the vent (15), the pump cavity of the inflator (6), the second port (12) and the air outlet (14).

9. Inflation and deflation device according to claim 7, wherein a photo sensor (5) is arranged inside the valve body (10) for detecting the position of the valve element (2).

10. Inflation and deflation device according to claim 7, further comprising a casing (8), wherein the airway switching valve (1) and the inflator (6) are mounted in the casing (8).