WO2019071852A1 - 灌装阀及其排气管 - Google Patents

灌装阀及其排气管 Download PDF

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Publication number
WO2019071852A1
WO2019071852A1 PCT/CN2017/120064 CN2017120064W WO2019071852A1 WO 2019071852 A1 WO2019071852 A1 WO 2019071852A1 CN 2017120064 W CN2017120064 W CN 2017120064W WO 2019071852 A1 WO2019071852 A1 WO 2019071852A1
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WO
WIPO (PCT)
Prior art keywords
valve
floating
filling
pipe
exhaust pipe
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PCT/CN2017/120064
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English (en)
French (fr)
Inventor
卢小军
樊衡益
宋俊杰
Original Assignee
广州达意隆包装机械股份有限公司
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Publication of WO2019071852A1 publication Critical patent/WO2019071852A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks

Definitions

  • the invention belongs to the technical field of filling, and particularly relates to a filling valve and an exhaust pipe thereof.
  • drinking water filling machines generally use mechanical filling valves, which are filled by overflow, that is, after the bottle is filled to the required liquid level, the filling is continued, and excess drinking water is taken from the exhaust pipe and the return pipe. Drainage forms wastewater.
  • the overflow filling method will produce a lot of waste water, which is not conducive to environmental protection, and the filling machine needs to install complicated return pipelines, and the cost is high.
  • the present invention overcomes the defects of the prior art, and provides a filling valve and an exhaust pipe thereof, which can effectively avoid the phenomenon of overflow and overflow, and does not need to install a complicated return pipeline to reduce the cost.
  • An exhaust pipe of a filling valve comprising a pipe body, a floating body and a plug, wherein the pipe body is provided with an exhaust passage and a floating cavity, one end of the exhaust passage is used for communicating with the outside, and the other end is a floating cavity is connected, an opening is disposed at one end of the floating cavity away from the exhaust passage, the plug is blocked at the opening, and a bottom of the plug is provided with a water inlet hole, and the floating body is disposed at the The upper end of the floating body is connected to the valve core of the filling valve, and the side wall of the floating cavity is provided with a venting hole.
  • a diverting umbrella is disposed at an outer wall of the exhaust passage and a connecting portion of the outer wall of the floating chamber, and one end of the diverting umbrella near the exhaust passage is a small end, and one end near the floating chamber is a large end.
  • the floating body has a column shape, and one end of the floating body near the exhaust passage is a spherical surface, and an end surface of the floating chamber connected to the exhaust passage is a spherical surface or a conical surface, and the length of the floating chamber is greater than the height of the floating body.
  • the vent hole is disposed at the upper end of the floating chamber.
  • the upper end outer wall of the pipe body is provided with a thread segment connected with the valve core of the filling valve, and the outer wall of the pipe body is further provided with a boss and a groove, the boss is located below the thread segment, and the The groove is located between the threaded section and the boss.
  • the plug is in an interference fit with the opening.
  • the floating body is a hollow cylinder, and the top surface of the cylinder is a spherical surface.
  • a filling valve comprising a valve seat, a valve core, a valve body and an exhaust pipe of the filling valve, wherein an upper end of the valve body is disposed in the valve seat and can slide up and down relative to the valve seat, the valve core The upper end is connected to the valve seat, the lower end of the valve core is disposed in the valve body, and the lower portion of the valve core is tapered and provided with a first sealing ring, and the valve body can be opened by the first sealing ring Alternatively, the filling passage is closed, the upper end of the exhaust pipe is connected to the valve body, and the lower end of the exhaust pipe is extended from the valve body.
  • An air outlet passage is defined in the valve core, and a threaded hole is disposed below the air outlet passage, and an upper end of the exhaust pipe is screwed to the valve core through the threaded hole, and an exhaust passage and the air outlet passage Connected, the boss on the outer wall of the pipe body abuts against the valve core, and a second sealing ring is disposed in the groove on the outer wall of the pipe body.
  • a protrusion is disposed in a middle portion of the bottom end of the valve body, a through hole is formed in the protrusion, and the exhaust pipe extends through the through hole to extend the valve body, and the protrusion and the inner wall of the valve body Forming an annular groove, a lower end of the valve core extends into the annular groove, a first filling passage is formed between the valve core and the valve body, and a second filling passage is formed between the protrusion and the valve core A third filling channel is formed between the protrusion and the exhaust pipe, and the first filling channel, the second filling channel and the third filling channel are sequentially connected to form the filling channel.
  • the floating body When the buoyancy of the drinking water is greater than the gravity of the floating body, the floating body begins to rise until the upper end of the floating body blocks the exhaust passage, the air in the bottle cannot be discharged, and the drinking water level no longer rises. , that is, the filling stops, at this time the bottle has also been filled to the required liquid level, effectively avoiding the overflow phenomenon, and does not need to install a complicated return line to reduce the cost; then, the bottle leaves the filling valve, the exhaust pipe The liquid in the liquid is discharged from the water inlet hole in the plug, and the pressure on the floating body disappears, and falls back to the bottom of the exhaust pipe by gravity.
  • Figure 1 is a schematic cross-sectional view of the exhaust pipe of the embodiment
  • FIG. 2 is a schematic cross-sectional view showing the filling valve of the embodiment when it is opened;
  • Fig. 3 is a schematic cross-sectional view showing the filling valve of the embodiment when it is closed.
  • Valve seat 11, first filling channel, 12, second filling channel, 13, third filling channel, 2, valve core, 21, first sealing ring, 22, air outlet, 3, valve body , 31, raised, 32, annular groove, 4, exhaust pipe, 10, pipe body, 110, exhaust passage, 120, floating cavity, 122, exhaust hole, 130, diverting umbrella, 140, threaded section, 150 , boss, 160, groove, 170, second sealing ring, 20, floating body, 30, plug, 310, water inlet.
  • an exhaust pipe 4 of a filling valve includes a pipe body 10, a floating body 20 and a plug 30.
  • the pipe body 10 is provided with an exhaust passage 110 and a floating cavity 120.
  • One end of the exhaust passage 110 is configured to communicate with the outside, and the other end is in communication with the floating cavity 120.
  • the floating cavity 120 is provided with an opening at one end of the exhaust passage 120, and the plug 30 is blocked at the opening.
  • the bottom end of the plug 30 is provided with a water inlet hole 310.
  • the floating body 20 is disposed in the floating cavity 120 and is in clearance with the floating cavity 120.
  • the upper end of the pipe body 10 is used for the filling valve.
  • the valve core 2 is connected, and the side wall of the floating cavity 120 is provided with a vent hole 122.
  • the floating body 20 in the exhaust pipe 4 stays at the bottom of the exhaust pipe 4 under the force of gravity, the bottle tops up the filling valve, and the lower end of the exhaust pipe 4 extends into the bottle.
  • the drinking water flows down the surface of the pipe body 10, the liquid level gradually rises, and the rising liquid squeezes the air in the bottle to the exhaust hole 122 and the exhaust passage 110, and the liquid level rises to the lower end of the exhaust pipe 4, the drinking water
  • the through hole in the plug 30 enters the exhaust pipe 4.
  • the floating body 20 When the buoyancy of the drinking water is greater than the gravity of the floating body 20, the floating body 20 starts to rise until the upper end of the floating body 20 blocks the exhaust passage 110, and the air in the bottle cannot be discharged, drinking water The liquid level no longer rises, that is, the filling stops. At this time, the bottle has been filled to the required liquid level, effectively avoiding the overflow phenomenon, and it is not necessary to install a complicated return line to reduce the cost; then, the bottle leaves the filling
  • the valve the liquid in the liquid of the exhaust pipe 4 is discharged from the water inlet hole 310 in the plug 30, the pressure applied to the floating body 20 disappears, and falls back to the bottom of the exhaust pipe 4 by gravity.
  • a diverting umbrella 130 is disposed at an outer wall of the exhaust passage 110 and an outer wall of the floating chamber 120.
  • One end of the diverting umbrella 130 near the exhaust passage 110 is a small end, and one end near the floating chamber 120 is large. end.
  • the diverting umbrella 130 protrudes from the outer wall of the tubular body 10, and the venting hole 122 is located below the diverting umbrella 130. After the liquid enters, it is shunted through the diverting umbrella 130 and uniformly flows along the inner wall of the bottle to the bottom of the bottle, so that the liquid flow is evenly and stably reduced. The production of bubbles.
  • the floating body 20 has a column shape, and one end of the floating body 20 near the exhaust passage 110 is a spherical surface, and an end surface of the floating cavity 120 connected to the exhaust passage 110 is a spherical surface or a conical surface, and the length of the floating cavity 120 is further
  • the exhaust hole 122 is disposed at an upper end of the floating chamber 120 than the height of the floating body 20.
  • the floating body 20 can slide up and down in the floating cavity 120.
  • the overall density of the floating body 20 is smaller than that of the filling liquid.
  • the upper end of the floating body 20 is provided with a spherical surface which can closely fit the spherical surface or the conical surface of the top of the floating cavity 120, and can be pressed under a certain upward pressure.
  • the exhaust passage 110 is completely blocked, and no water leakage is allowed.
  • the floating body 20 of the embodiment is a hollow cylinder, and the top surface of the cylinder is a spherical surface. With the columnar floating body 20, the lateral width need not be set too large, and the vertical length can be set according to requirements, so that it meets the requirements of the sealed exhaust passage 110, and the volume needs to be large enough to meet the pressure compared with the spherical floating ball. It is required that if the volume of the floating ball is too small, the pressure is not tight and the sealing is not strict.
  • the floating body 20 of the present embodiment has a clever shape design and a good sealing effect.
  • the upper end outer wall of the pipe body 10 is provided with a threaded section 140 connected to the valve core 2 of the filling valve, and the outer wall of the pipe body 10 is further provided with a boss 150 and a groove 160, and the boss 150 is located at the thread Below the segment 140, the groove 160 is located between the threaded section 140 and the boss 150.
  • the exhaust pipe 4 is screwed to the valve core 2 through the threaded section 140, and is pressed against the valve core 2 through the boss 150, while the groove 160 between the threaded section 140 and the boss 150 is used to install the second seal.
  • the ring 170 is used to seal the connection between the pipe body 10 and the valve core 2, so as to prevent the floating body 20 from floating up and blocking the exhaust passage 110, the gas in the bottle is discharged through the gap between the pipe body 10 and the valve core 2, resulting in filling.
  • the valve continues to fill, causing too much filling fluid in the bottle to overflow.
  • the plug 30 is interference fit with the opening, and the floating body 20 is placed in the floating cavity 120 through the opening, and an interference fit is adopted between the plug 30 and the opening of the pipe body 10 to prevent the floating body 20 from falling down.
  • the floating cavity 120 is dropped, and the water inlet hole 310 blocked can allow liquid in the bottle to enter.
  • a filling valve includes a valve seat 1, a valve body 2, a valve body 3, and an exhaust pipe 4 of the filling valve, and an upper end of the valve body 3 is disposed at a valve seat.
  • 1 is capable of sliding up and down with respect to the valve seat 1, the upper end of the valve body 2 is connected to the valve seat 1, the lower end of the valve body 2 is disposed in the valve body 3, and the lower portion of the valve body 2 is tapered
  • a first sealing ring 21 is provided, and the valve body 3 cooperates with the first sealing ring 21 to open or close the filling channel, and the upper end of the exhaust pipe 4 is connected with the valve core 2, and the exhaust pipe 4 The lower end projects out of the valve body 3.
  • the top of the bottle is moved up at the lower end of the valve body 3, so that the tapered surface of the valve body 3 is separated from the first sealing ring 21 of the valve body 2, so that the filling channel is opened.
  • the lower end of the exhaust pipe 4 extends into the bottle, and the filling hole on the liquid valve seat 1 flows downward along the surface of the pipe body 10, the liquid level in the bottle gradually rises, and the rising liquid squeezes the air in the bottle to exhaust
  • the hole 122 and the exhaust passage 110 are exhausted, and when the liquid level rises to the lower end of the exhaust pipe 4, the drinking water enters the exhaust pipe 4 from the through hole in the plug 30, and when the buoyancy of the drinking water is greater than the gravity of the floating body 20, the floating body 20 Start to rise until the upper end of the floating body 20 blocks the exhaust passage 110, the air in the bottle can not be discharged, the drinking water level no longer rises, that is, the filling stops, and the bottle is also filled to the required liquid level, effectively avoiding overflow.
  • the flow phenomenon does not require the installation of a complicated return line to reduce the cost; then, the bottle leaves the filling valve, and the liquid in the liquid of the exhaust pipe 4 is discharged from the water inlet hole 310 in the plug 30, and the pressure of the floating body 20 is received. Disappears, falls back to the bottom of the exhaust pipe 4 under the action of gravity, and the valve body 3 acts as a spring force Down, which is tapered and the valve body 21 in close contact with the first seal ring 2, preventing liquid outflow.
  • an air outlet passage 22 is defined in the valve core 2, and a threaded hole is disposed below the air outlet passage 22.
  • the upper end of the exhaust pipe 4 is threaded with the spool 2 through the threaded hole.
  • the exhaust passage 110 communicates with the outlet passage 22, the boss 150 on the outer wall of the pipe body 10 abuts against the valve core 2, and the second sealing ring is disposed in the groove 160 on the outer wall of the pipe body 10. 170.
  • the boss 150 defines the connection depth of the exhaust pipe 4 and the valve core 2 on the one hand, and also functions to seal the pipe body 10 and the valve core 2 on the other hand, and the second seal ring 170 is disposed above the boss 150 while The boss 150 specifically supports the second seal ring 170.
  • a protrusion 31 is provided, and the protrusion 31 is provided with a through hole through which the exhaust pipe 4 extends out of the valve body 3
  • An annular groove 32 is formed between the protrusion 31 and the inner wall of the valve body 3, a lower end of the valve body 2 extends into the annular groove 32, and a first filling is formed between the valve body 2 and the valve body 3.
  • a second filling channel 12 is formed between the protrusion 31 and the valve core 2
  • a third filling channel 13 is formed between the protrusion 31 and the exhaust pipe 4, and the first filling channel 11 is formed.
  • the second filling channel 12 and the third filling channel 13 are sequentially connected to form the filling channel.
  • the tapered surface of the valve body 3 and the first sealing ring 21 are disposed on the first filling passage 11, and the tapered surface of the valve body 3 is separated or closed from the first sealing ring 21 to open and close the filling passage.
  • the annular groove 32, the liquid remaining after the closing will remain in the annular groove 32, and after the filling is in place, the residual liquid continues to flow into the bottle after the bottle mouth is removed, and the residual liquid leaks out of the filling valve. Cause environmental pollution and so on.

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  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

一种灌装阀及其排气管，所述排气管(4)包括管体(10)、浮体(20)及堵头(30)，所述管体(10)内开设有排气通道(110)及浮动腔(120)，所述排气通道(110)的一端用于与外界连通，另一端与所述浮动腔(120)连通，所述浮动腔(120)远离排气通道(110)的一端设有开口，所述堵头(30)堵在所述开口处，且所述堵头(30)的底端设有进水孔(310)，所述浮体(20)设置在所述浮动腔(120)内且与浮动腔(120)间隙配合，所述管体(10)的上端用于与灌装阀的阀芯(2)连接，所述浮动腔(120)的侧壁上设有排气孔(122)。液体沿着管体表面向下流动，液体从堵头中的通孔进入排气管，当液体的浮力大于浮体的重力时，浮体开始上升，直至浮体上端堵住排气通道，瓶内空气无法排出，饮用水液位不再上升，有效避免了灌溢流现象，也不需要安装复杂的回流管路，降低了成本。

Description

灌装阀及其排气管 技术领域
本发明属于灌装技术领域，特别涉及一种灌装阀及其排气管。
背景技术
传统的，饮用水灌装机一般采用机械灌装阀，采用溢流的方式灌装，即瓶子灌装到所要求液位后还继续灌装，多余的饮用水从排气管和回流管路排走形成废水。溢流灌装方式会产生很多废水，不利于环保，而且灌装机需要安装复杂的回流管路，成本较高。
发明内容
基于此，本发明在于克服现有技术的缺陷，提供一种灌装阀及其排气管，能有效避免灌溢流现象，也不需要安装复杂的回流管路，降低成本。
一种灌装阀的排气管，包括管体、浮体及堵头，所述管体内开设有排气通道及浮动腔，所述排气通道的一端用于与外界连通，另一端与所述浮动腔连通，所述浮动腔远离排气通道的一端设有开口，所述堵头堵在所述开口处，且所述堵头的底端设有进水孔，所述浮体设置在所述浮动腔内且与浮动腔间隙配合，所述管体的上端用于与灌装阀的阀芯连接，所述浮动腔的侧壁上设有排气孔。
其进一步技术方案如下：
所述排气通道的外壁与所述浮动腔的外壁连接处设有分流伞，所述分流伞靠近排气通道的一端为小端，靠近浮动腔的一端为大端。
所述浮体呈柱状，且所述浮体靠近排气通道的一端为球面，所述浮动腔与排气通道连接的端面呈球面或者圆锥面，所述浮动腔的长度大于所述浮体的高度，所述排气孔设置在浮动腔的上端。
所述管体的上端外壁设有与灌装阀的阀芯连接的螺纹段，且管体的外壁还设有凸台及凹槽，所述凸台位于所述螺纹段的下方，且所述凹槽位于螺纹段与 凸台之间。
所述堵头与所述开口过盈配合。
所述浮体为空心圆柱体，且所述圆柱体的顶面为球面。
一种灌装阀，包括阀座、阀芯、阀体及所述的灌装阀的排气管，所述阀体的上端设置在阀座内且能相对阀座上下滑动，所述阀芯的上端与所述阀座连接，阀芯的下端设置在所述阀体内，且所述阀芯的下部呈锥状且设有第一密封圈，所述阀体与第一密封圈配合能打开或者关闭灌装通道，所述排气管的上端与所述阀芯连接，排气管的下端伸出所述阀体。
所述阀芯内开设有出气通道，所述出气通道的下方设有螺纹孔，所述排气管的上端通过所述螺纹孔与所述阀芯螺纹连接，且排气通道与所述出气通道连通，管体的外壁上的凸台抵在所述阀芯上，管体的外壁上凹槽内设有第二密封圈。
所述阀体的底端中部设有凸起，所述凸起上设有贯穿孔，所述排气管穿过所述贯穿孔伸出所述阀体，所述凸起与阀体内壁之间形成环形槽，所述阀芯的下端伸入所述环形槽内，所述阀芯与阀体之间形成第一灌装通道，所述凸起与阀芯之间形成第二灌装通道，所述凸起与排气管之间形成第三灌装通道，所述第一灌装通道、第二灌装通道及第三灌装通道依次连通形成所述灌装通道。
对前述技术方案的优点或原理进行说明：
上述灌装阀及其排气管，在饮用水或者其他液体灌装时，排气管内的浮体在重力作用下停留在排气管的底部，瓶子向上顶开灌装阀，排气管下端伸入到瓶子内，饮用水沿着管体表面向下流动，液位逐渐上升，上升的液体挤压瓶内空气往排气孔和排气通道排出，液位上升至排气管下端时，饮用水从堵头中的通孔进入排气管，当饮用水的浮力大于浮体的重力时，浮体开始上升，直至浮体上端堵住排气通道，瓶内空气无法排出，饮用水液位不再上升，即灌装停止，此时瓶子也已灌装到所要求液位，有效避免灌溢流现象，也不需要安装复杂的回流管路，降低成本；接着，瓶子离开灌装阀，排气管液内的液体从堵头中的进水孔排出，浮体所受的压力消失，在重力作用下回落至排气管的底部。
附图说明
图1为本实施例所述的排气管的剖面示意图；
图2为本实施例所述灌装阀打开时的剖面示意图；
图3为本实施例所述灌装阀关闭时的剖面示意图。
附图标记说明：
1、阀座，11、第一灌装通道，12、第二灌装通道，13、第三灌装通道，2、阀芯，21、第一密封圈，22、出气通道，3、阀体，31、凸起，32、环形槽，4、排气管，10、管体，110、排气通道，120、浮动腔，122、排气孔，130、分流伞，140、螺纹段，150、凸台，160、凹槽，170、第二密封圈，20、浮体，30、堵头，310、进水孔。
具体实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施方式。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本发明的公开内容理解的更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。相反，当元件被称作“直接在”另一元件“上”时，不存在中间元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
如图1、2所示，一种灌装阀的排气管4，包括管体10、浮体20及堵头30，所述管体10内开设有排气通道110及浮动腔120，所述排气通道110的一端用于与外界连通，另一端与所述浮动腔120连通，所述浮动腔120远离排气通道110的一端设有开口，所述堵头30堵在所述开口处，且所述堵头30的底端设有进水孔310，所述浮体20设置在所述浮动腔120内且与浮动腔120间隙配合，所述管体10的上端用于与灌装阀的阀芯2连接，所述浮动腔120的侧壁上设有排气孔122。
在饮用水或者其他液体灌装时，排气管4内的浮体20在重力作用下停留在排气管4的底部，瓶子向上顶开灌装阀，排气管4下端伸入到瓶子内，饮用水沿着管体10表面向下流动，液位逐渐上升，上升的液体挤压瓶内空气往排气孔122和排气通道110排出，液位上升至排气管4下端时，饮用水从堵头30中的通孔进入排气管4，当饮用水的浮力大于浮体20的重力时，浮体20开始上升，直至浮体20上端堵住排气通道110，瓶内空气无法排出，饮用水液位不再上升，即灌装停止，此时瓶子也已灌装到所要求液位，有效避免灌溢流现象，也不需要安装复杂的回流管路，降低成本；接着，瓶子离开灌装阀，排气管4液内的液体从堵头30中的进水孔310排出，浮体20所受的压力消失，在重力作用下回落至排气管4的底部。
进一步，所述排气通道110的外壁与所述浮动腔120的外壁连接处设有分流伞130，所述分流伞130靠近排气通道110的一端为小端，靠近浮动腔120的一端为大端。所述分流伞130突起管体10的外壁，排气孔122位于分流伞130下方，液体进入后，经过分流伞130分流后沿着瓶子内壁均匀地向瓶底流动，使液体流动均匀稳定，减少泡沫的产生。
进一步，所述浮体20呈柱状，且所述浮体20靠近排气通道110的一端为球面，所述浮动腔120与排气通道110连接的端面呈球面或者圆锥面，所述浮动腔120的长度大于所述浮体20的高度，所述排气孔122设置在浮动腔120的上端。浮体20可以在浮动腔120中上下滑动，浮体20整体密度比灌装液小，浮体20上端设有能与浮动腔120顶部的球面或圆锥面紧密贴合的球面，在一定 的向上压力下能完全堵住排气通道110，不漏水。本实施例所述浮体20为空心圆柱体，且所述圆柱体的顶面为球面。采用呈柱状的浮体20，横向宽度无需设置的太大，同时竖向的长度可根据需求设置，使其满足密封排气通道110的要求，相比球状的浮球需足够大的体积才能满足压力要求，如过浮球体积太小容易出现压不紧、密封不严的情况，本实施所述浮体20形状设计巧妙，且密封效果好。
所述管体10的上端外壁设有与灌装阀的阀芯2连接的螺纹段140，且管体10的外壁还设有凸台150及凹槽160，所述凸台150位于所述螺纹段140的下方，且所述凹槽160位于螺纹段140与凸台150之间。通过所述螺纹段140使排气管4与阀芯2螺纹连接，通过凸台150抵在阀芯2上，同时螺纹段140与凸台150之间的凹槽160用于装设第二密封圈170，使管体10与阀芯2之间密封连接，从而避免浮体20上浮堵住排气通道110后，瓶内的气体通过管体10与阀芯2之间的缝隙排出，导致灌装阀继续灌装，造成瓶内灌装液过多而出现溢流。所述堵头30与所述开口过盈配合，浮体20通过所述开口置于所述浮动腔120内，堵头30与管体10的开口之间采用过盈配合，阻止浮体20往下掉落出浮动腔120，堵上的进水孔310可以使瓶子内的液体进入。
如图2、3所示，一种灌装阀，包括阀座1、阀芯2、阀体3及所述的灌装阀的排气管4，所述阀体3的上端设置在阀座1内且能相对阀座1上下滑动，所述阀芯2的上端与所述阀座1连接，阀芯2的下端设置在所述阀体3内，且所述阀芯2的下部呈锥状且设有第一密封圈21，所述阀体3与第一密封圈21配合能打开或者关闭灌装通道，所述排气管4的上端与所述阀芯2连接，排气管4的下端伸出所述阀体3。
本实施例所述灌装阀，灌装时瓶子顶在阀体3下端使其上移，从而使阀体3的锥面与阀芯2的第一密封圈21分离，使灌装通道打开，排气管4下端伸入到瓶子内，液体有阀座1上的灌装孔进入沿着管体10表面向下流动，瓶内液位逐渐上升，上升的液体挤压瓶内空气往排气孔122和排气通道110排出，液位上升至排气管4下端时，饮用水从堵头30中的通孔进入排气管4，当饮用水的浮 力大于浮体20的重力时，浮体20开始上升，直至浮体20上端堵住排气通道110，瓶内空气无法排出，饮用水液位不再上升，即灌装停止，此时瓶子也已灌装到所要求液位，有效避免灌溢流现象，也不需要安装复杂的回流管路，降低成本；接着，瓶子离开灌装阀，排气管4液内的液体从堵头30中的进水孔310排出，浮体20所受的压力消失，在重力作用下回落至排气管4的底部，而阀体3在弹簧力的作用下下移，其锥面与阀芯2的第一密封圈21紧密接触，阻止液体流出。
如图3所示，所述阀芯2内开设有出气通道22，所述出气通道22的下方设有螺纹孔，所述排气管4的上端通过所述螺纹孔与所述阀芯2螺纹连接，且排气通道110与所述出气通道22连通，管体10的外壁上的凸台150抵在所述阀芯2上，管体10的外壁上凹槽160内设有第二密封圈170。凸台150一方面对排气管4与阀芯2的连接深度进行限定，另一方面也起到了密封管体10与阀芯2的作用，第二密封圈170设置在凸台150上方，同时凸台150对第二密封圈170具体承托作用。
进一步，本实施例所述阀体3的底端中部设有凸起31，所述凸起31上设有贯穿孔，所述排气管4穿过所述贯穿孔伸出所述阀体3，所述凸起31与阀体3内壁之间形成环形槽32，所述阀芯2的下端伸入所述环形槽32内，所述阀芯2与阀体3之间形成第一灌装通道11，所述凸起31与阀芯2之间形成第二灌装通道12，所述凸起31与排气管4之间形成第三灌装通道13，所述第一灌装通道11、第二灌装通道12及第三灌装通道13依次连通形成所述灌装通道。即阀体3的锥面与第一密封圈21设置在第一灌装通道11上，阀体3的锥面与第一密封圈21分离或闭合实现对灌装通道的开闭，由于设置了环形槽32，闭合后残留的液体会留在环形槽32内，避免灌装到位后，瓶口移开阀体3后残留液继续流入瓶内出现溢流或者残留液滴漏出灌装阀外，造成环境污染等。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细， 但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (9)

  1. 一种灌装阀的排气管，其特征在于，包括管体、浮体及堵头，所述管体内开设有排气通道及浮动腔，所述排气通道的一端用于与外界连通，另一端与所述浮动腔连通，所述浮动腔远离排气通道的一端设有开口，所述堵头堵在所述开口处，且所述堵头的底端设有进水孔，所述浮体设置在所述浮动腔内且与浮动腔间隙配合，所述管体的上端用于与灌装阀的阀芯连接，所述浮动腔的侧壁上设有排气孔。
  2. 根据权利要求1所述的灌装阀的排气管，其特征在于，所述排气通道的外壁与所述浮动腔的外壁连接处设有分流伞，所述分流伞靠近排气通道的一端为小端，靠近浮动腔的一端为大端。
  3. 根据权利要求1所述的灌装阀的排气管，其特征在于，所述浮体呈柱状，且所述浮体靠近排气通道的一端为球面，所述浮动腔与排气通道连接的端面呈球面或者圆锥面，所述浮动腔的长度大于所述浮体的高度，所述排气孔设置在浮动腔的上端。
  4. 根据权利要求1所述的灌装阀的排气管，其特征在于，所述管体的上端外壁设有与灌装阀的阀芯连接的螺纹段，且管体的外壁还设有凸台及凹槽，所述凸台位于所述螺纹段的下方，且所述凹槽位于螺纹段与凸台之间。
  5. 根据权利要求1所述的灌装阀的排气管，其特征在于，所述堵头与所述开口过盈配合。
  6. 根据权利要求1所述的灌装阀的排气管，其特征在于，所述浮体为空心圆柱体，且所述圆柱体的顶面为球面。
  7. 一种灌装阀，其特征在于，包括阀座、阀芯、阀体及权利要求1-6任一项所述的灌装阀的排气管，所述阀体的上端设置在阀座内且能相对阀座上下滑动，所述阀芯的上端与所述阀座连接，阀芯的下端设置在所述阀体内，且所述阀芯的下部呈锥状且设有第一密封圈，所述阀体与第一密封圈配合能打开或者关闭灌装通道，所述排气管的上端与所述阀芯连接，排气管的下端伸出所述阀体。
  8. 根据权利要求7所述的灌装阀，其特征在于，所述阀芯内开设有出气通道，所述出气通道的下方设有螺纹孔，所述排气管的上端通过所述螺纹孔与所述阀芯螺纹连接，且排气通道与所述出气通道连通，管体的外壁上的凸台抵在所述阀芯上，管体的外壁上凹槽内设有第二密封圈。
  9. 根据权利要求7所述的灌装阀，其特征在于，所述阀体的底端中部设有凸起，所述凸起上设有贯穿孔，所述排气管穿过所述贯穿孔伸出所述阀体，所述凸起与阀体内壁之间形成环形槽，所述阀芯的下端伸入所述环形槽内，所述阀芯与阀体之间形成第一灌装通道，所述凸起与阀芯之间形成第二灌装通道，所述凸起与排气管之间形成第三灌装通道，所述第一灌装通道、第二灌装通道及第三灌装通道依次连通形成所述灌装通道。
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