WO2014032466A1

WO2014032466A1 - Quick opening self-sealed cover of pressure vessel and tennis ball reaeration storage apparatus

Info

Publication number: WO2014032466A1
Application number: PCT/CN2013/077980
Authority: WO
Inventors: 许戴维
Original assignee: 许为民
Priority date: 2012-08-31
Filing date: 2013-06-26
Publication date: 2014-03-06
Also published as: CN202927029U

Abstract

A quick opening self-sealed cover of a pressure vessel and a tennis ball reaeration storage apparatus. The quick opening self-sealed cover (2) of the pressure vessel comprises an upper cover (21) connected to an end port (11) of the pressure vessel, a tensioning piece (24) inserted in the upper cover and capable of moving along the axial direction of the upper cover, a connection piece (22) clamped between the upper cover and the tensioning piece, and a sealing ring (23) sleeved on the connection piece and abutted against the tensioning piece. The tensioning piece (24) moves up and down by pressurizing and decompressing the pressure vessel (1), and the sealing ring (23) is unfolded or rebounded, and then the sealing ring (23) is abutted against or separated from an inner wall of the pressure vessel, and therefore the pressure vessel can be closed or opened automatically and rapidly, and purposes of good sealing effect and convenient operation are achieved. In addition, a tennis ball reaeration storage apparatus using the quick opening self-sealed cover is further provided. The tennis ball reaeration storage apparatus comprises a storage barrel (4), an inflator (5), and a manual decompression valve (52), capable of increasing service life of a tennis ball effectively and making the operation easy and convenient.

Description

Quick opening of pressure vessel from self-sealing cover and tennis refilling storage device

The utility model belongs to the technical field of pressure vessels, in particular to a quick opening self-sealing cover of a pressure container and a tennis refilling storage device using the quick opening self-sealing cover.

Tennis is a very popular sport in the world. Tennis is usually divided into solid and hollow. According to the requirements of international standards, the bounce performance of tennis balls must reach a certain height after falling to a hard surface from a certain height. At present, hollow tennis is used in most trainings and competitions. The hollow tennis ball consists of a hollow rubber ball with a layer of felt on the outside. The rubber ball is filled with a certain air pressure, and its internal absolute pressure is 1.841 bar, which is higher than the natural atmospheric pressure to reach the bounce height requirement. Since the rubber itself has micropores which are not completely dense, under natural atmospheric pressure, the internal gas of the hollow tennis ball (hereinafter referred to as tennis) will slowly leak through the rubber layer, thereby causing the internal pressure to decrease and the rebound of the ball to be weakened. Therefore, the commonly sold tennis balls are also packed in metal or plastic pressurized tanks to maintain the pressure and elasticity of the sphere. However, once the tennis ball is opened, the pressure inside the ball is greater than the environmental pressure, and the tennis ball beats continuously, the pressure begins to gradually decrease, and the bounce performance of the tennis ball drops rapidly, which greatly limits the service life of the tennis ball.

In order to maintain the stability of tennis bounce and extend the service life of tennis balls, many patented technologies have emerged for decades. The main principle is to put the used tennis balls into a closed pressure vessel immediately. Then use a sealing cover to seal the port of the pressure vessel through a common threaded connection or a snap connection, and then inflate and pressurize the container, and use a pressure gauge to display the pressure inside the container. When the pressure inside the container is higher than the internal pressure of the tennis ball, the setting is reached. When the pressure is applied, the user stops the pressurization, thereby preventing the internal pressure of the tennis ball from being released, and simultaneously inflating the inside of the tennis ball to compensate for the internal pressure loss of the tennis ball during use. When tennis is required, the pressure inside the pressure vessel is released through the exhaust valve, then the sealing cap is removed and the tennis ball is taken.

But all of these technologies have some or all of the following deficiencies and shortcomings:

1) When sealing the pressure vessel port, the sealing cap and the pressure vessel are usually statically sealed at the port, the deformation space of the sealing component is small, the sealing effect is poor, and the operation is inconvenient, even if the static sealing is completely, when the sealing cap is opened, due to the pressure The tightness of the joint causes the sealing cover to be difficult to remove from the pressure vessel port;

2) When the sealing cover is opened, the operating position of the exhaust valve is small, which is not conducive to finger operation;

3) When pressurizing the pressure vessel, it is necessary to observe the display number of the pressure gauge to operate the pump, which is costly and inconvenient to operate;

4) The design of the pump and handle is unreasonable and the operation is difficult.

5) The work and design parameters are not clearly given, and the special inflation pressure is at the conceptual design stage.

So far, no related patent technology has been put into practical use.

In view of this, the pressure vessel based on the pressure self-sealing principle provided by the utility model quickly opens the self-sealing cover, and aims to solve the problem that the sealing effect of the sealing cover is poor and difficult to open in the prior art.

The technical solution of the present invention is: a quick opening self-sealing cover of a pressure vessel, comprising an upper cover screwed to the pressure vessel port, a tensioning member inserted into the upper cover and movable along the axial direction thereof, a rotatable connecting member interposed between the upper cover and the tensioning member, and sleeved on the connecting member and abutting the tensioning member and being sealable when the sealing member is The upward movement distracts against the inner wall of the pressure vessel port, and upon opening, the trapezoidal seal ring is retracted by the tensioning member to recover the trapezoidal sealing ring separated from the inner wall of the pressure vessel.

Further, the connecting member is provided with an abutting portion which is distributed in a ring shape in parallel with the friction reducing force corresponding to the upper cover.

Still further, the seal ring is an annular seal ring having a trapezoidal longitudinal section, and the tension member abuts against the seal ring to have a tapered surface.

Specifically, the thread of the upper cover is a discontinuous multi-start thread disposed along the outer circumference thereof.

More specifically, the inner wall of the pressure vessel port is provided with a step for abutting the tensioning member.

Still further, the inner ring of the seal ring is provided with a liquid chamber, and the liquid chamber is sealed with a liquid.

Further, the top or bottom of the tensioning member is provided with an adjusting member that can abut or disengage the sealing ring, and the adjusting member is a button connected to the top of the tensioning member, or An eccentric cam handle hinged at the top of the tensioning member, or a rotary lifting disc that rotates by pressing the button and drives the tensioning member to lift or lower, or is screwed to the top of the tensioning member and rotatable The knob is closed, or is an upper top spring connected to the bottom of the tensioning member and a top plate that can press against the sealing member.

The utility model provides a quick opening self-sealing cover of a pressure container, and the pressure ring inserted into the upper cover moves up and down by pressure and pressure relief of the pressure container, thereby expanding or restoring the sealing ring, thereby making the The sealing ring abuts or disengages from the inner wall of the pressure vessel, so that the pressure vessel can be quickly and automatically sealed or the pressure vessel can be opened. Thus, the structure is simple, the operation is convenient, and the sealing effect is good.

The utility model also provides a tennis refilling storage device using the quick opening self-sealing cover, comprising a storage cylinder and an air pump arranged in parallel with the storage cylinder and capable of introducing air pressure into the storage cylinder, the storage cylinder having a storage chamber for accommodating a tennis ball, the pumping cylinder has a pumping chamber for compressible air, and the storage chamber is in communication with the pumping chamber through an air inlet, and the pumping cylinder is provided with a pumping air for pressurizing the storage cylinder a push rod, a disc-shaped handle cover and a piston respectively connected to both ends of the push rod, the piston being inserted into the air pump and sealing the air chamber thereof and sliding along the axial direction thereof, the storage tube The storage port can use the quick opening self-sealing cap of the pressure vessel of any of the above.

Further, the piston is provided with a pressure setting valve that can set the pressure in the storage chamber, and is connected to the sound generator at the other end through the hollow pusher to form a pressure setting and sounding reminding system.

Further, the handle cover of the pump is in the shape of a disk, which is ergonomic and convenient for manual air pumping. It is snap-fitted with the bottom of the spherical crown-shaped storage cylinder.

Compared with the prior art, the tennis refilling storage device of the utility model has the quick opening self-sealing cover of the pressure container, which can realize quick sealing, closing and opening, and the operation is simple and convenient; the pressure setting set in the inflator And audible reminder system, The operation is intuitive; the disc shape design of the handle of the pump handles the ergonomic principle, and the manual air pumping is convenient and labor-saving; the lower part is cleverly matched with the bottom of the crown-shaped storage cylinder, and the shape is compact and simple.

1 is a schematic cross-sectional view showing a quick opening self-sealing cover of a pressure vessel according to Embodiment 1 of the present invention;

2 is an exploded perspective view of the quick opening self-sealing cover of the pressure vessel according to the first embodiment of the present invention;

3 is a cross-sectional view showing the quick opening self-sealing cover of the pressure vessel according to the second embodiment of the present invention;

4 is a cross-sectional view showing the quick opening self-sealing cover of the pressure vessel according to the third embodiment of the present invention;

Figure 5 is a cross-sectional view showing the quick opening self-sealing cover of the pressure vessel according to the fourth embodiment of the present invention;

Figure 6 is a cross-sectional view showing the quick opening self-sealing cover of the pressure vessel according to the fifth embodiment of the present invention;

Figure 7 is a cross-sectional view showing the quick opening self-sealing cover of the pressure vessel according to the sixth embodiment of the present invention;

Figure 8 is a perspective view showing the structure of the tennis refilling storage device of the present invention;

Figure 9 is a cross-sectional view showing an embodiment of the tennis refilling storage device of the present invention;

Figure 10 is a partial enlarged view of the portion A in Figure 9;

Figure 11 is an exploded perspective view of the handle assembly of Figure 9;

Figure 12 is a partial enlarged view of the portion C in Figure 11;

Figure 13 is a partially enlarged schematic view of the portion B in Figure 9.

The label in the figure shows:

100 100	网球再充气存放装置 Tennis refilling storage device	11 11	端口 port
1 1	压力容器 Pressure vessel	111 111	内壁 Inner wall
2 2	快速开启自密封盖 Quick opening self-sealing cover
21 twenty one	上盖 Upper cover	211 211	卡扣孔 Buckle hole
212 212	间断式多头螺纹 Intermittent multi-start thread	213 213	开闭旋钮 Opening and closing knob
2131 2131	螺纹孔 Threaded hole	2132 2132	旋钮凸肋 Knob rib
22 twenty two	连接件 Connector	221 221	抵靠部 Abutment
23 twenty three	密封环 Sealing ring	222 222	定位槽 Positioning slot
24 twenty four	张紧件 Tensioning piece	231 231	液体腔 Liquid chamber
241 241	插接杆 Plug rod	2411 2411	卡扣 Buckle
242 242	锥形面 Conical surface	2412 2412	按钮 Button
243 243	旋转升降盘 Rotary lift plate	2413 2413	缺口 gap
244 244	偏心凸轮手柄 Eccentric cam handle	2414 2414	凸起 Bulge
245 245	转销 Resale	2415 2415	铰接孔 Hinged hole
25 25	压缩弹簧 compressed spring	26 26	顶盘 Top plate
27 27	上顶弹簧 Top spring	31 31	网球 tennis
3 3	密封物件 Sealing object	411 411	卡扣 Buckle
4 4	存放筒 Storage tube	412 412	球冠部 Ball crown
41 41	筒体 Cylinder	421 421	端口内壁台阶部 Port inner wall step
42 42	存放腔 Storage chamber	511 511	进气口 Air inlet
5 5	打气筒 Inflator	521 521	提手块 Handle block
51 51	打气腔 Air chamber	522 522	扣环 Buckle
52 52	手动泄压阀 Manual pressure relief valve	523 523	拉杆 Pull rod
53 53	单向阀 Check valve	524 524	阀座 Seat
531 531	锥形凸台 Tapered boss	525 525	密封圈 Seal ring
527 527	手动泄压阀密封圈 Manual pressure relief valve seal	526 526	抵顶弹簧 Abutting spring
6 6	手柄组件 Handle assembly	611 611	发声体 Sound body
61 61	推杆 Putt	621 621	活塞密封圈 Piston seal
62 62	活塞 piston	622 622	压力设定阀 Pressure setting valve
63 63	手柄盖 Handle cover	623 623	让位凹槽 Give way groove
631 631	固定环 M	624 624	活塞本体 Piston body
632 632	肋片 Rib	6221 6221	压力设定阀密封圈 Pressure setting valve seal
633 633	凸台 Boss	6222 6222	顶杆 Pole
634 634	卡槽 Card slot	6223 6223	弹簧 spring

Referring to Figures 1 and 2, the quick opening of the pressure vessel is self-sealing the lid 2 for sealing the port 11 of the pressure vessel 1, which includes Cover 21, tensioning member 24, connecting member 22 and sealing ring 23. The upper cover 21 is screwed to the pressure vessel port 11, and a locking hole 211 for inserting the tensioning member 24 is axially disposed. The tensioning member 24 is in the shape of a disk, and a latching rod 241 is protruded from one end thereof. The tensioning member 24 is inserted into the upper cover 21 through the insertion rod 241 and the latching hole 211 and can be along the axis thereof. Moving to; connecting piece 22 is interposed between the upper cover 21 and the tensioning member 24; the trapezoidal sealing ring 23 is sleeved on the connecting member 22 and abuts against the tensioning member 24. In closing the pressure vessel Quick opening self-sealing cover At 2 o'clock, the tensioning member 24 is slightly topped by the step portion 421 on the inner wall of the port and the sealing ring 23 is opened to abut against the inner wall 111 of the port 11 of the pressure vessel 1 to form an initial seal; When the pump is inflated with the pump, as the air pressure increases, the air pressure further pushes the tensioning member to force the seal ring 23 to abut tightly against the inner wall 111, thereby forming a self-sealing. When the pressure vessel 1 needs to be opened, the air pressure in the pressure vessel 1 is released by the manual pressure relief valve 52, so that the pressure in the pressure vessel 1 is close to the atmospheric pressure. The tension member 24 loses the upper top air pressure drop, and the seal ring 23 rebounds and reduces the abutting force against the inner wall 111, returning to the abutment state at the time of initial sealing. Then turning the upper cover 21, which will The quick opening of the pressure vessel is completely removed from the sealing cover 2. In this way, the quick opening of the pressure vessel 1 can be achieved by the quick sealing and closing of the self-sealing cover 2, the operation is simple and convenient, and the sealing effect is good.

In this embodiment, the top outer wall of the insertion rod 241 is provided with a buckle 2411 for the card position, and the buckle 2411 is evenly spaced in the circumferential direction. Thus, when the insertion rod 241 passes through the locking hole 211 of the upper cover 21, the buckle 2411 is caught at the end of the locking hole 211, so that the end portion is evenly stressed, and the locking is more stable, so that The insertion rod 241 cannot easily slip out of the snap hole 211. During assembly, in order to facilitate the easy insertion of the buckle 2411 through the buckle hole 211, a notch 2413 is further dug between the adjacent buckles 2411. As such, the elasticity of the buckle 2411 is increased.

In order to allow the sealing ring 23 to be more stably sleeved on the connecting member 22, a ring-shaped positioning groove 222 is formed in the periphery of the connecting member 22, so that the bottom of the connecting member 22 is in a direction. The lower disc has a disc shape, and the inner wall of the seal ring 23 is hooped with the outer wall of the truncated cone. Thus, when the seal ring 23 is radially outwardly opened during sealing, the force is uniformly applied throughout the circumference, so that the outer wall of the seal ring 23 is tightly fitted to the inner wall 111 of the pressure vessel 1, further ensuring the seal. effect.

Referring again to Fig. 2, when the upper cover 21 is rotated, the connecting member 22 does not rotate together. In order to reduce the upper cover 21 and the connecting member The frictional force between 22 is an abutting portion 221 provided between the connecting member 22 and the upper cover 21. The abutting portion 221 is a plurality of rings arranged on each other, and the rings are arranged at intervals. In this way, the surface contact between the upper cover 21 and the connecting member 22 is avoided, and a line contact is formed, which greatly prolongs the service life of the product.

In this embodiment, the abutting portion 221 is integrally formed with the connecting member 22. In this way, additional parts are manufactured and manufactured, the assembly process is shortened, and the cost is saved.

Further, the tensioning member 24 abuts against the sealing ring 23 at a tapered surface 242, and the tapered surface 242 is located at the The outer periphery of the tension member 24 is surrounded by a circle. When the tensioning member 24 is moved against the inner diameter of the top seal ring 23, the tapered surface 242 abuts against the inner wall of the seal ring 23, and since the tapered surface 242 has a slope, a radial distribution along the seal ring 23 can be produced. Reach the top force. In this way, the outer wall of the sealing ring 23 can be quickly attached to the inner wall 111 of the pressure vessel 1, and the radial component of the tapered surface 242 acting on the sealing ring 23 is evenly distributed in the circumferential direction, so that The entire sealing ring 23 is evenly stressed in the radial direction to better seal the pressure vessel.

Still further, the upper cover The outer edge of the outer edge of 21 is provided with a discontinuous multi-start thread 212, and the intermittent multi-start thread 212 has a thick thread and is strip-shaped, so that the upper cover can be easily When the pressure port 21 is screwed into the port 11, the number of rotations is reduced, saving time and labor, and the upper cover 21 and the port 11 of the pressure vessel 1 are prevented from being too tight and not easily opened.

In this embodiment, the intermittent multi-start thread 212 is set to four, and the inclination angle of each thread is set to 120°. As such, the upper cover When the screw 21 is screwed into the port 11 of the pressure vessel, it has four screw connection inlets, which reduces the alignment time of the upper cover 21 into the pressure vessel 1, and is easier to seal quickly.

Of course, the number of the intermittent multi-start threads 212 can also be set according to actual needs.

Embodiment 2:

The difference between this embodiment and the first embodiment is:

As shown in FIG. 3, the inner ring of the seal ring 23 is provided with a liquid chamber 231 in which a liquid is sealed, and the liquid chamber 231 is located in the seal ring 23 near the outer wall and has a circular cross section. When the seal ring 23 is deformed, the circular shape of its cross section becomes elliptical, and the liquid located in the cavity forms an elliptical liquid ring. Thus, at the time of sealing, the sealed liquid in the liquid chamber 231 generates a hydraulic pressure, and the outer wall of the seal ring 23 can be quickly and tightly attached to the inner wall 111 of the pressure vessel 1. When the cross section of the liquid chamber 231 is restored to a circular shape by the ellipse when it is opened, the outer wall of the seal ring 23 can be quickly separated from the inner wall 111 of the pressure vessel 1, thereby achieving rapid opening.

Further, the quick opening of the pressure vessel is self-sealing The compression axis 25 is also provided in the axial direction to reset the tensioning member 24. In this embodiment, the compression spring 25 is press-fitted between the connecting member 22 and the tensioning member 24. Thus, upon opening, the compression spring 25 produces two outward thrusts in its axial direction that separate the connector 22 from the tensioning member 24, allowing the tensioning member 24 to be quickly reset, thereby ensuring Up Quickly open the opening of the self-sealing cover 2.

In addition, a button 2412 is disposed on the top of the tensioning member 24, and the quick opening self-sealing cover of the pressure container is opened. At 2 o'clock, if necessary, the button 2412 can be pressed by a finger to help the tensioning member 24 to slide down and reset, and the sealing ring 23 is separated from the inner wall 111 of the pressure vessel 1 to ensure smooth opening. The quick opening of the pressure vessel is self-sealing cap 2.

Embodiment 3:

The difference between this embodiment and the second embodiment is:

As shown in FIG. 4, in the embodiment, the compression spring 25 is press-fitted between the upper cover 21 and the tensioning member 24. The top of the tensioning member 24 is provided with an adjusting member that can abut or disengage the sealing ring 23, thereby avoiding the step portion 421 at the inner wall of the port in the second embodiment. The adjusting member is a rotating lifting plate 243. The top of the insertion rod 241 is radially provided with a ring protrusion 2414. The protrusion 2414 presses the compression spring 25 on the upper cover 21 at the insertion rod 241. The top of the top is provided with a rotating lifting plate 243 and a button 2412. By pressing the button 2412, the rotating lifting plate 243 can be rotated and moved axially up or down, thereby driving the tensioning member 24 to move up and down. Thereby, the positional relationship of the tensioning member 24 and the seal ring 23 is quickly changed. shut down When the pressure vessel is quickly opened from the sealing cover 2, the button 2412 is pressed to move the tensioning member 24 upward, and the sealing ring 23 is raised to abut against the inner wall of the port to form an initial seal, which provides conditions for the air pressure self-sealing. Open the pressure vessel When the self-sealing cover 2 is quickly opened, pressing the button 2412 causes the tensioning member 24 to move down, and the sealing ring 23 is restored to open the quick opening self-sealing cover. 2. The adjustment member is simple and convenient to operate, and provides a good opening feeling to the user.

Embodiment 4:

The difference between this embodiment and the third embodiment is:

As shown in FIG. 5, in the embodiment, the adjusting member is an eccentric cam handle 244 hinged to the top of the tensioning member 24. A hinge hole 2415 is defined in the top of the insertion rod 241. The eccentric cam handle 244 passes through the hinge hole 2415 through a rotating pin 245 and is hinged to the top of the insertion rod 241. Since the center of the eccentric cam handle 244 is different from the center of the revolving pin 245, the operator pulls the free end of the eccentric cam handle 244 to lift or lower it, so that the eccentric cam handle 244 surrounds the eccentric cam handle 244. The center of the reversing pin 245 is rotated. Since the periphery thereof is pressed against the upper end surface of the upper cover 21, thereby changing the distance between the rotation center and the upper end surface of the upper cover 21, the tensioning member 24 is raised or lowered, thereby adjusting the sealing ring 23 and the pressure vessel. The positional relationship of the inner wall 111 of 1. Thus, when sealing, the sealing ring 23 can be quickly lifted against the inner wall 111. When the opening is closed, the sealing ring 23 can be quickly detached from the inner wall 111. The structure is simple and compact, and is convenient to operate.

Embodiment 5:

The difference between this embodiment and the fourth embodiment is:

As shown in FIG. 6 , in the embodiment, the adjusting member is an opening and closing knob 213 , and the opening and closing knob 213 is rotatable and screwed to the top of the tensioning member 24 . When the user rotates the opening and closing knob 213, the tensioning member 24 can be moved up and down relative to the opening and closing knob 213, so that the sealing ring 23 is in close contact with or separated from the inner wall 111, thereby facilitating the pressure vessel 1 Sealed or opened. In order to facilitate the user to grasp the opening and closing knob 213, knob ribs 2132 are provided at the edge of the opening and closing knob 213, and the knob ribs 2132 are evenly distributed in the circumferential direction.

Example 6:

The difference between this embodiment and the second embodiment is:

As shown in FIG. 7, in the present embodiment, the bottom of the tensioning member 24 is connected to the top plate 26 of the sealing member 3 by an upper spring 27. Thus, when sealing, the top plate 26 abuts against the sealing member 3 placed in the pressure vessel 1, and the upper tensioning spring 27 gives the tensioning member 24 an upward abutting force, so that it can be pressurized before being pressurized. The retaining ring 23 is extended to form an initial seal to provide the necessary conditions for the pressure and self-sealing.

The utility model also provides a tennis refilling storage device 100 using the quick opening self-sealing cover 2, The implementation of the tennis refilling storage device 100 of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in Figures 8 to 13, a preferred embodiment of the tennis refilling storage device of the present invention is provided.

As shown in FIG. 8, FIG. 9 and FIG. 10, the tennis refilling storage device 100 provided by the utility model comprises a storage cylinder 4 and an inflator. 5. Quickly open the self-sealing cover 2 and the manual pressure relief valve 52. The pump 5 is arranged side by side with the storage cylinder 4 to quickly open the self-sealing cover 2 and the manual pressure relief valve 52 is placed at one end, and the pump handle cover 63 is placed at the other end. The pumping cylinder 5 presses a gas into the storage cylinder 4, the storage cylinder 4 having a cylinder 41 and accommodating a tennis ball 31 The storage chamber 42 has a pumping chamber 51 of compressible air, and the storage chamber 42 communicates with the pumping chamber 51 through an air inlet 511, and the storage port of the storage tube 4 is connected to the above The quick opening of the pressure vessel is self-sealing cap 2 . Since the self-sealing cover 2 of the pressure vessel is quickly opened, when the pump 5 is inflated and pressurized into the storage cylinder 4, The storage cylinder 4 can be quickly sealed. When the tennis ball 31 is taken, the air pressure in the storage cylinder 4 is released by the manual pressure relief valve 52 to be adjacent to the atmospheric pressure, and the quick opening can be started. The quick opening of the pressure vessel is from the sealing cover 2, and the tennis ball 31 is taken. In this way, the structure is simple and compact, and the operation is convenient.

Of course, according to market needs, tennis can be re-inflated storage device 100 is arranged in a manner that a plurality of storage cylinders 4 are combined with the inflator 5, such as placing the inflator 5 in the middle, the storage cylinders 4 are arranged in four, and are uniformly distributed around the center of the inflator 5, wherein Each of the storage cylinders 4 can store four tennis balls 31. Obviously, the number of the tennis balls 31 stored in each of the storage cylinders 4 can be set according to the needs of different people.

Further, in order to store the tennis ball 31 and to prevent the tennis ball 31 from being deflated and re-inflating the tennis ball 31, The storage air pressure in the storage cylinder 4 should be higher than the air pressure inside the tennis ball 31. After calculation and test verification, the utility model sets the absolute air pressure in the storage cylinder 4 to 1.92 ~ 4bar. Between 3, the most suitable. The storage air pressure is too small, and the inflation process inside the tennis ball 31 is too slow; if the storage air pressure is too large, the inside of the tennis ball 31 may be inflated too much. The pressure in the tennis ball 31 is made to exceed the set value (1.841 bar), and manual inflation is difficult, and the manufacturing cost is high.

Further, the air chamber 51 has a diameter of 15 to 30 mm. Storage cylinder of the utility model 4 is inflated by the pump 5 through the air inlet 511, and the diameter of the pump 5 is also an important design parameter. In the case where the tennis storage pressure is given, the diameter of the pumping chamber 51 is The smaller the pumping, the more effortless it is, but the more frequent iterations and the time-consuming operation; the larger the diameter of the pumping chamber 51, the more difficult it is to pump, but the less frequent airing and the time-saving operation. After the actual test application, in the utility model, pumping When the diameter of the cavity 51 is selected between 15 and 30 mm, a good balance can be found between the air resistance and the number of air strokes.

Referring to Figures 9-11, the pump assembly 5 is provided with a handle assembly 6 for pumping and pressing the storage cylinder 4, the handle assembly 6 includes a push rod 61, a disc-shaped handle cover 63 and a piston 62 respectively connected to both ends of the push rod 61. The piston 62 is inserted into the inflator 5 and seals its pumping chamber 51 And can slide along its axial direction by setting the handle assembly 6 It is convenient for the user to inflate and pressurize the storage cylinder 4, and meets the ergonomic design requirements. The handle cover 63 has a disk shape, so that the operator can more easily push the push rod 61 to move the piston 62 in the air chamber 51 to compress the air in the air chamber 51. In addition, the handle cover 63 is engaged with the bottom of the cylinder 41 of the storage cylinder 4, and is disposed opposite to the storage port of the storage cylinder 4, thereby avoiding the interference of the handle cover 63 and the quick opening self-sealing cover 2 when inflating. When it is necessary to pressurize and pressurize the inside of the storage cylinder 4, the storage port of the storage cylinder 4 can be placed face down on the ground, and the handle cover 63 can be directly pressed down. Therefore, the handle cover 63 can be cleverly fastened to the spherical crown of the storage cylinder 4, preventing the free movement of the air pumping component, and the structure is compact and simple, and is convenient for carrying and carrying. Tennis re-inflated storage device 100.

Referring to FIG. 10, a check valve 53 is disposed in the air chamber, and is located between the air inlet 511 and the piston 62. The one-way valve 53 is a rubber diaphragm having a conical boss 531 protruding from one end thereof. The tapered boss 531 is adjacent to the piston 62. Thus, the check valve 53 prevents the gas in the storage chamber from flowing back into the air chamber 51. The piston body 624 of the piston 62 is sleeved with two piston sealing rings 621. The piston body 624 is connected to one end of the push rod 61, and a receiving groove 623 is disposed at the top of the piston body. The groove 623 prevents the piston body 624 from pressing against the tapered boss 531 of the one-way valve 53, ensuring the stability of the one-way valve 53, thereby avoiding air leakage. The piston body 624 is closely abutted against the inner wall of the air chamber 51 by the piston seal ring 621, and the air chamber 51 can form a closed cavity. . Referring again to Figure 9, the push rod 61 is hollow. The piston 62 is provided with a pressure setting valve 622. The pressure setting valve 622 includes a plunger 6222 that is disposed in the piston 62 and is placed on the plunger 6222 to abut against the piston body 624. A valve seal ring 6221 and a spring 6223 which is sleeved on the top rod 6222 and pressed against the piston body 624 are disposed. The pressure setting valve 622 is disposed through the hollow push rod 61 The sounding body at the lower end of the push rod 61 611 Unicom. When the pumping cylinder 4 is forced to exceed the required pressure value, the air pressure immediately acts on the jack 6222 to move downward, the pressure setting valve 622 is opened, and the released air passes through the push rod 61. The cavity flows through the sounding body 611 to emit an audible sound, reminding the user that the air pressure value in the storage chamber 42 has reached the required set value, and the air pumping operation can be stopped. This simple pressure setting and audible alarm system allows the operator to observe the pressure gauge readings while pumping, and the pumping operation is more convenient and worry-free.

Further, a manual pressure relief valve 52 for releasing pressure is disposed at the upper end of the pumping cylinder 5. Referring to Figure 10, the manual pressure relief valve The valve block 524 includes a valve seat 524 connected to the top end of the pumping cylinder 5, a pressure release pull rod 523 disposed on the valve seat 524, a sleeve disposed at the middle of the pull rod 523 and pressed against the pull rod 523 and the valve seat 524. A manual pressure relief valve sealing ring 527 and an abutting spring 526 disposed at a lower end of the pull rod 523, the abutting spring 526 is pressed against the valve seat by a buckle 522 that is sleeved at a bottom end of the pull rod 523 At the bottom of the 524, the top end of the pull rod 523 is fastened with a handle block 521 which can be lifted up. The handle block 521 has a cylindrical shape, and the valve seat 524 is connected to the air pump 5 to prevent leakage. Gas seal 525. When the quick opening self-sealing cover of the storage cylinder 4 is opened, the air pressure in the storage cylinder 4 needs to be released first. At this time, the handle block 521 can be lifted up by lifting the handle block 521 upwards, so that the storage chamber 51 communicates with the atmosphere to relieve pressure. In this way, when the handle block 521 is released, the hand feel is good and the operation is convenient. In addition, the manual pressure relief valve 52 can be used as a safety valve at the same time to prevent overpressure in the storage chamber 5142.

Referring to FIG. 8, the bottom of the storage cylinder 4 has a spherical crown shape, and the structure is matched with the spherical structure of the tennis ball 31 to make the wall thickness uniform, which is convenient for injection molding and demoulding, and saves raw materials. Referring to FIG. 11, the handle cover 63 is provided with a card slot 634 which is matched with the ball crown 412. The handle cover 63 is a casing which is circumferentially disposed and evenly distributed on the handle cover. The ribs 623 in 63 are formed, thus, on the one hand, the handle cover is raised The structural strength of 63, on the other hand, saves the materials used for raw materials, and at the same time, makes the whole product compact and exquisite in structure, beautiful in appearance, and more attractive to consumers.

Referring to FIG. 8 and FIG. 11 , a buckle 411 is protruded from a bottom end of the spherical cap portion 412 , and the handle cover 63 is provided with the card The fixing ring 631 of the 411 is matched, and the inner wall of the fixing ring 631 is uniformly distributed with three bosses 633 in the circumferential direction, so that the handle cover can be secured. 63 is more securely snapped onto the ball crown 412 while being easily accessible.

Referring to Figures 9 and 13, the port of the storage cylinder 4 is provided with a quick opening self-sealing cover for abutting the pressure vessel. The port inner wall step portion 421 of 2. When sealing, the port inner wall step portion 421 can pre-empt the pressure vessel with a quick opening self-sealing cover 2 An upward abutting force to make it preliminary seal, providing the necessary conditions for air pressure self-sealing.

Further, the quick opening of the pressure vessel is provided with a connecting strip (not shown) from the sealing cover 2 when The quick opening of the pressure vessel is self-sealing from the port of the storage cylinder 4, and it can be tied to the side of the storage cylinder 4 by the connecting belt without being rolled off, making it difficult to collect.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the present invention. The scope of protection of utility models.

Claims

A quick opening self-sealing cap for a pressure vessel, comprising: a threaded connection to the pressure vessel port a cover, a tensioning member inserted into the upper cover and movable along the axial direction thereof, a rotatable connecting member interposed between the upper cover and the tensioning member, and a sleeve Up and abutting the tensioning member And when the seal is sealed, the tensioning member is moved upward to abut against the inner wall of the pressure vessel port, and when opened, the sealing ring is separated from the inner wall of the pressure vessel by the tension member .
A quick-opening self-sealing cover for a pressure vessel according to claim 1, wherein said connecting member is provided with a friction reducing force corresponding to said upper cover. An abutting portion that is parallel to each other in a ring shape.
The quick opening self-sealing cover of the pressure vessel according to claim 1, wherein: the sealing ring is an annular sealing ring having a trapezoidal longitudinal section, The tensioning member has a tapered surface at the top of the sealing ring.
A quick opening self-sealing cover for a pressure vessel according to claim 1 - 3, wherein: said upper cover The thread is a discontinuous multi-start thread disposed along the circumference of its outer edge.
A quick opening self-sealing cap for a pressure vessel according to claim 1 wherein: A step portion for abutting the tensioning member is provided at an inner wall of the pressure vessel port.
A quick opening self-sealing cap for a pressure vessel according to claim 1 wherein: The inner ring of the seal ring is provided with a liquid chamber, and the liquid chamber is sealed with a liquid.
A quick opening self-sealing cap for a pressure vessel according to claim 1 wherein: The top or bottom of the tensioning member is provided with an adjusting member that can abut or disengage the sealing ring, the adjusting member being a button connected to the top of the tensioning member, or An eccentric cam handle hinged at the top of the piece, or a rotary lifting plate that rotates by pressing the button and drives the tensioning member to lift and lower, or an opening and closing knob that is screwed to the top of the tensioning member and rotatable, Or an upper top spring connected to the bottom of the tensioning member and a top plate that can resist the sealing member.
a tennis refilling storage device comprising a storage cylinder and an air pump arranged in parallel with the storage cylinder and capable of introducing air pressure into the storage cylinder, the storage cylinder having a storage cavity for accommodating tennis balls, The pumping cylinder has an air blowing chamber of compressible air, and the storage chamber communicates with the air blowing chamber through an air inlet. The pumping cylinder is provided with a push rod for pumping and pressing the storage cylinder, a disc-shaped handle cover and a piston respectively connected to the two ends of the push rod, and the piston is inserted into the pump and is inserted into the pump Air chamber seal And sliding along the axial direction thereof, characterized in that the port of the storage cylinder is connected with the quick opening self-sealing cover of the pressure vessel according to any one of claims 1-7.
A tennis refilling storage device according to claim 8, wherein: said piston is provided with a pressure setting valve which passes said hollow push rod Connected to the sound generator at the other end to form a pressure setting and sounding reminder system.
The tennis refilling storage device according to claim 8, wherein the handle cover of the pump is in the shape of a disk and is snap-fitted to the bottom of the storage cylinder in a spherical shape.