WO2020233431A1 - 一种用于真空袋的气嘴 - Google Patents

一种用于真空袋的气嘴 Download PDF

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Publication number
WO2020233431A1
WO2020233431A1 PCT/CN2020/089533 CN2020089533W WO2020233431A1 WO 2020233431 A1 WO2020233431 A1 WO 2020233431A1 CN 2020089533 W CN2020089533 W CN 2020089533W WO 2020233431 A1 WO2020233431 A1 WO 2020233431A1
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Prior art keywords
air
sealing portion
nozzle body
air nozzle
gas nozzle
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PCT/CN2020/089533
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English (en)
French (fr)
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潘生明
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Pan Shengming
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Publication of WO2020233431A1 publication Critical patent/WO2020233431A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags

Definitions

  • the invention relates to a gas nozzle for a vacuum bag.
  • the working principle of the vacuum bag is to exhaust the air inside the bag body, thereby reducing the volume of the vacuum bag, using atmospheric pressure to flatten the originally expanded vacuum bag volume, isolating the outside air to save space, achieving dust, mildew, The purpose of preventing moisture and insects.
  • a vacuum pump is generally used when vacuuming the vacuum bag.
  • users usually use a vacuum cleaner as a vacuuming device.
  • the suction port of the vacuum cleaner is docked with the air nozzle on the vacuum bag.
  • the docking usually involves the suction port being sleeved around the air nozzle , And then turn on the vacuum cleaner to extract the air from the vacuum bag.
  • vacuum cleaners were originally designed for cleaning and cleaning, and different brands and models of vacuum cleaners have different shapes and sizes. Therefore, when vacuum cleaners are used as vacuuming equipment, the suction mouth of the vacuum cleaner and the nozzle of the vacuum bag often do not match. Resulting in poor suction effect or unable to suction.
  • the present invention is researched and proposed for the shortcomings of the prior art.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an air nozzle for vacuum bags, which can be well matched with the suction openings of vacuum cleaners of various shapes and sizes, and is suitable for Strong sex.
  • an air nozzle for a vacuum bag the air nozzle body is provided with an air hole, and the air nozzle body is covered with an elastic air plug.
  • a cavity is formed between the gas nozzle body and the gas plug.
  • the gas plug includes a first sealing part and a second sealing part. The second sealing part is arranged around the periphery of the first sealing part.
  • An exhaust port is provided between a sealing portion and a second sealing portion, and the exhaust port is in communication with the cavity;
  • the first sealing portion can cooperate with the air hole so that the air hole and the cavity Partition or communication;
  • the second sealing portion includes an upper surface that can fit and fit with the suction port of the suction device, and a lower surface that can be sealed and fit with the air nozzle body; when the air pressure below the air hole is lower than the first When the air pressure on the upper surface of a sealing portion is applied, the air plug is elastically deformed so that the lower surface of the first sealing portion is sealed and fitted with the air hole, thereby separating the air hole and the cavity; when the air pressure below the air hole is high When the air pressure of the upper surface of the first sealing portion is air pressure, a gap is formed between the lower surface of the sealing portion and the air hole so that air can flow into the cavity through the air hole; the suction port of the air suction device is connected to the exhaust port and starts to pump air When the suction port is pressed against the upper surface
  • a support ring is provided on the air nozzle body and located in the cavity, and the support ring is distributed below the second sealing portion and can communicate with the second
  • the lower surface of the sealing part is in contact, and the support ring may be continuous or discontinuous.
  • a supporting structure is provided on the air nozzle body and located in the cavity, and the supporting structure is distributed around the air hole.
  • the suction port of the suction device is pressed against the upper surface of the air plug, it is also easy to tighten the first sealing part, resulting in insufficient elasticity of the first sealing part and insensitive movement; the supporting structure distributed around the air holes can be reduced
  • the initial deformation of the first sealing part makes it easy for the first sealing part to open the air hole when pumping air.
  • there is enough clearance between the exhaust port and the air nozzle body so that air can flow smoothly from the air hole to the exhaust port, ensuring The pumping is smooth.
  • the upper surface of the air plug is provided with convex ribs, and the convex ribs are distributed at a side position of the exhaust port and close to the exhaust port.
  • the outer edge of the lower surface of the second sealing portion is in a sealing fit with the air nozzle body, and after so set up, when the suction port of the suction device is pressed against the second seal
  • the cavity can be used as a retreat space to facilitate the deformation of the second sealing part, so that a flexible contact is formed between the suction port and the gas nozzle of the present invention, and the fitting effect between the two is better.
  • the air nozzle body is also provided with a ring-shaped installation groove, the outer edge of the lower surface of the second sealing portion is provided with a positioning flange, and the positioning protrusion
  • the rim can be inserted into the installation groove, and the cooperation of the installation groove and the positioning flange is adopted to facilitate the production and assembly of the present invention.
  • the gas nozzle body is further provided with a pressure ring, and the pressure ring and the gas nozzle body are buckled or threaded, and the pressure ring presses the second seal The outer edge of the upper surface of the part thus presses the air plug against the air nozzle body.
  • the gas nozzle body is also provided with a gas nozzle cover.
  • the air nozzle cover is detachably fixedly connected with the air nozzle body.
  • the air nozzle cover includes a cover plate, and the cover plate and the air nozzle body are buckled or threaded, and the cover plate is also provided with a top
  • the cover plate is covered on the gas nozzle body, the top column presses against the upper surface of the first sealing part, so that the first sealing part can more tightly and stably hold the The pores are closed.
  • the present invention has the following advantages: the air nozzle for the vacuum bag of the present invention is provided with an elastic air plug, and the suction port of the suction device is directly connected to the air plug. Under the action of, the air lock is deformed. The air in the bag enters the cavity through the gap between the first sealing part and the air hole, and then is drawn away through the exhaust port. A good fit is formed between the suction ports of the device to improve the air extraction effect; when the air is exhausted, the lower surface of the first sealing part is sealed and fitted with the air hole under the action of the external pressure, thereby isolating the air in the bag from the outside air.
  • the structure of the invention is simple and reliable, and has good matching with the suction port of the suction device, and has a wide application range.
  • Figure 1 is a perspective view of the present invention.
  • Figure 2 is a perspective exploded view of the present invention.
  • Figure 3 is a cross-sectional view of the present invention when it is closed.
  • Fig. 4 is a cross-sectional view of the present invention during exhaust.
  • Fig. 5 is a perspective view of the air plug in Fig. 1.
  • an air nozzle for a vacuum bag includes an air nozzle body 1.
  • the air nozzle body 1 is covered with an elastic air plug 2 so that there is formed between the two
  • the air nozzle body 1 is provided with an air hole 11;
  • the air plug 2 includes a first sealing part 21 and a second sealing part 22, the first sealing part 21 is located directly above the air hole 11, Used to separate or communicate the air hole 11 and the cavity 3;
  • the second sealing portion 22 is arranged around the periphery of the first sealing portion 21, and the upper surface of the second sealing portion 22 is used for pumping
  • the suction port of the air device fits snugly, and the lower surface of the second sealing part 22 is in sealing cooperation with the air nozzle body 1;
  • an exhaust port 23 is provided between the first sealing part 21 and the second sealing part 22, the The exhaust port 23 communicates with the cavity 3.
  • a support ring 12 and a support structure 13 are provided on the gas nozzle body 1 and located in the cavity 3, and the support ring 12 is distributed below the second sealing portion 22 and can communicate with the first The lower surfaces of the two sealing parts 22 are in contact, and the supporting structure 13 is distributed around the air hole 11.
  • the upper surface of the air plug 2 is provided with convex ribs 25, and the convex ribs 25 are distributed at a side position of the exhaust port 23 and close to the exhaust port 23.
  • the outer edge of the second sealing portion 22 is in a sealing fit with the gas nozzle body 1, and the gas nozzle body 1 is further provided with a ring-shaped mounting groove 14, and the lower surface of the second sealing portion 22
  • a positioning flange 24 that can be inserted into the mounting groove 14 is provided on the outer edge of the mounting groove 14, a positioning opening 15 along the radial direction is also provided on the mounting groove 14, and the positioning flange 24 is provided with a positioning opening that can be inserted into 15 boss 26;
  • the gas nozzle body 1 is also provided with a pressure ring 5, the pressure ring 5 and the gas nozzle body 1 between the snap connection or threaded connection, the pressure ring 5 presses the second sealing portion
  • the outer edge of the upper surface of 22 thus presses the air plug 2 on the air nozzle body 1.
  • the pressure ring 5 is also connected with an air nozzle cover 4, the air nozzle cover 4 includes a cover plate 41, the cover plate 41 and the pressure ring 5 are connected by snap-fit connection or threaded connection, the cover plate A top post 42 is also provided on the 41, and the top post 42 is pressed against the upper surface of the first sealing portion 22 when the cover plate 41 is covered on the gas nozzle body 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

一种用于真空袋的气嘴，包括气嘴本体（1），气嘴本体（1）上设有气孔（11），气嘴本体（1）上盖设有一个具有弹性的气塞（2）从而两者之间形成腔体（3），气塞（2）包括有第一密封部（21）和第二密封部（22），第二密封部（22）环绕设置在第一密封部（21）的外围，第一密封部（21）与第二密封部（22）之间设有排气口（23），排气口（23）与腔体（3）相连通；第一密封部（21）能与气孔（11）配合从而使气孔（11）与腔体（3）之间隔断或连通；第二密封部（22）包括有能与抽气装置的吸口贴合配合的上表面、能与气嘴本体（1）密封配合的下表面；该气嘴结构简单可靠、与抽气装置吸口的贴合配合效果好。

Description

一种用于真空袋的气嘴 【技术领域】
本发明涉及一种用于真空袋的气嘴。
【背景技术】
真空袋的工作原理是把袋体内部的空气排出，从而使真空袋内体积得到缩小，利用大气压把本来膨胀的真空袋体积压扁，隔离外界空气，以节约空间，达到防尘、防霉、防潮和防虫的目的。对真空袋进行抽真空时一般要使用真空泵，但是为了节省成本，用户通常会使用吸尘器作为抽真空设备，吸尘器的吸口与真空袋上的气嘴对接，对接通常是将吸口套在气嘴的外围，然后开启吸尘器即可将真空袋内的空气抽出。然而吸尘器原本是专用于清洁打扫，且不同品牌及型号的吸尘器的吸口的形状、大小均不同，所以用吸尘器作为抽真空设备时常常会出现吸尘器的吸口与真空袋的气嘴不匹配的情况，导致抽气效果差或无法抽气的情况。
本发明即是针对现有技术的不足而研究提出。
【发明内容】
本发明要解决的技术问题是克服现有技术存在的缺陷而提供一种用于真空袋的气嘴，能够很好的与多种不同形状、大小的吸尘器等抽气装置的吸口配合对接，适用性强。
为解决上述技术问题，本发明采用以下技术方案：一种用于真空袋的气嘴，所述气嘴本体上设有气孔，所述气嘴本体上盖设有一个具 有弹性的气塞，在气嘴本体与气塞之间形成有腔体，所述气塞包括有第一密封部和第二密封部，所述第二密封部环绕设置在所述第一密封部的外围，所述第一密封部与第二密封部之间设有排气口，所述排气口与所述腔体相连通；所述第一密封部能与所述气孔配合从而使所述气孔与腔体之间隔断或连通；所述第二密封部包括有能与抽气装置的吸口贴合配合的上表面、能与所述气嘴本体密封配合的下表面；当气孔下方的气压低于所述第一密封部的上表面的气压时，所述气塞产生弹性变形使得第一密封部的下表面与气孔密封贴合从而使所述气孔与腔体之间隔断；当所述气孔下方的气压高于所述第一密封部的上表面的气压时，所述密封部的下表面与气孔之间形成间隙使得空气可通过气孔流入腔体；抽气装置的吸口与排气口对接并开始抽气时，吸口顶压于所述第二密封部的上表面，由于气塞是具有弹性的，第二密封部产生变形并将吸口的边缘包围并与其贴合，因而能够很好的适应多种不同形状、大小的吸口，提升抽气效果。
如上所述的用于真空袋的气嘴，所述气嘴本体上且位于所述腔体内设有支承环，所述支承环分布在所述第二密封部的下方且能与所述第二密封部的下表面接触，所述支承环可以是连续的，也可以是间断的。当抽气装置的吸口顶压于所述第二密封部的上表面时如果用力过大容易使第二密封部绷紧，导致抽气时第二密封部与吸口之间不能形成良好接触配合；支承环局部支撑在第二密封部的下表面，可防止第二密封部过度绷紧，当抽气时第二密封部仍有足够的弹性变形能力从而可很紧密的贴合在吸口的边缘。
如上所述的用于真空袋的气嘴，所述气嘴本体上且位于所述腔体内设有支撑结构，所述支撑结构环绕分布在所述气孔周围。当抽气装置的吸口顶压于所述气塞的上表面时同样容易使第一密封部绷紧，导致第一密封部的弹性不足从而动作不灵敏；分布在气孔周围的支撑结构可减少了第一密封部的初始变形量，使得抽气时第一密封部很容易打开气孔，同时也使得排气口与气嘴本体之间留有足够间隙从而空气可从气孔顺利流向排气口，保证抽气顺畅。
如上所述的用于真空袋的气嘴，所述气塞的上表面设置有凸筋，所述凸筋分布在所述排气口的侧方位置且靠近所述排气口。当抽气装置的吸口与气塞接触配合时，吸口的边缘压在凸筋上，从而在吸口边缘与气塞之间可形成有微小的间隙，抽气装置工作时外界的空气可通过该间隙流入吸口，避免了真空袋袋体被过度抽气以及在袋体内的空气即将排空时抽气装置超负荷运行，同时抽气完毕后吸口仍可轻松与气塞脱离对接。
如上所述的用于真空袋的气嘴，所述第二密封部的下表面的外边缘与所述气嘴本体密封配合，如此设置之后当抽气装置的吸口顶压于所述第二密封部的上表面时，腔体可作为退让空间从而便于第二密封部的变形，使得吸口与本发明的气嘴之间形成柔性接触，两者之间的贴合配合效果更好。
如上所述的用于真空袋的气嘴，所述气嘴本体上还设有呈环形的安装槽，所述第二密封部的下表面的外边缘上设有定位凸缘，所述定位凸缘能插入所述安装槽内，采用安装槽和定位凸缘的配合以方便本 发明的生产装配。
如上所述的用于真空袋的气嘴，所述气嘴本体上还设有压环，所述压环与气嘴本体之间扣合连接或螺纹连接，所述压环压住第二密封部的上表面的外边缘从而将气塞压紧在所述气嘴本体上。
如上所述的用于真空袋的气嘴，所述气嘴本体上还设有气嘴盖。
如上所述的用于真空袋的气嘴，所述气嘴盖与所述气嘴本体可拆卸固定连接。
如上所述的用于真空袋的气嘴，所述气嘴盖包括有盖板，所述盖板与所述气嘴本体之间扣合连接或螺纹连接，所述盖板上还设有顶柱，当所述盖板盖在气嘴本体上时所述顶柱顶压于所述第一密封部的上表面，从而使得不需要抽气时第一密封部能够更紧密和稳定的将所述气孔封闭。
与现有技术相比，本发明具有如下优点：本发明的用于真空袋的气嘴设了有具有弹性的气塞，抽气装置的吸口与气塞直接对接，抽气装置启动后在气压的作用下，气塞产生变形，袋体内的空气经第一密封部与气孔之间的间隙进入腔体然后通过排气口被抽走，抽气过程中第二密封部产生变形从而与抽气装置的吸口之间形成良好配合，提升抽气效果；当排气完毕后，在外界的压强作用下第一密封部的下表面与气孔密封贴合，从而将袋体内的空气与外界空气隔离，本发明结构简单可靠，且与抽气装置的吸口之间的匹配性好，适用范围广。
【附图说明】
下面结合附图对本发明的具体实施方式作进一步详细说明，其 中：
图1为本发明的立体图。
图2为本发明的立体分解图。
图3为本发明的封闭时的剖视图。
图4为本发明的排气时的剖视图。
图5为图1中气塞的立体图。
【具体实施方式】
下面结合附图对本发明的具体实施方式作详细说明。
如图1至图5所示，一种用于真空袋的气嘴，包括有气嘴本体1，所述气嘴本体1上盖设有一个具有弹性的气塞2从而两者之间形成有腔体3，所述气嘴本体1上设有气孔11；所述气塞2包括有第一密封部21和第二密封部22，所述第一密封部21位于所述气孔11正上方，用于使所述气孔11与腔体3之间隔断或连通；所述第二密封部22环绕设置在所述第一密封部21的外围，所述第二密封部22的上表面用于抽气装置的吸口贴合配合，第二密封部22的下表面与所述气嘴本体1密封配合；所述第一密封部21与第二密封部22之间设有排气口23，所述排气口23与所述腔体3相连通。
优选的，所述气嘴本体1上且位于所述腔体3内设有支承环12和支撑结构13，所述支承环12分布在所述第二密封部22的下方且能与所述第二密封部22的下表面接触，所述支撑结构13环绕分布在所述气孔11周围。
优选的，所述气塞2的上表面设置有凸筋25，所述凸筋25分布 在所述排气口23的侧方位置且靠近所述排气口23。
优选的，所述第二密封部22的外边缘与所述气嘴本体1密封配合，所述气嘴本体1上还设有呈环形的安装槽14，所述第二密封部22的下表面的外边缘上设有能插入安装槽14的定位凸缘24，所述安装槽14上还设有沿径向的定位口15，所述定位凸缘24上设有能卡入所述定位口15的凸台26；所述气嘴本体1上还设有压环5，所述压环5与气嘴本体1之间扣合连接或螺纹连接，所述压环5压住第二密封部22的上表面的外边缘从而将气塞2压紧在所述气嘴本体1上。所述压环5上还连接有气嘴盖4，所述气嘴盖4包括有盖板41，所述盖板41与所述压环5之间扣合连接或螺纹连接，所述盖板41上还设有顶柱42，当所述盖板41盖在气嘴本体1上时所述顶柱42顶压于所述第一密封部22的上表面。

Claims (10)

  1. 一种用于真空袋的气嘴，包括有气嘴本体(1)，所述气嘴本体(1)上设有气孔(11)，其特征在于：所述气嘴本体(1)上盖设有一个具有弹性的气塞(2)，在气嘴本体(1)与气塞(2)之间形成有腔体(3)，所述气塞(2)包括有第一密封部(21)和第二密封部(22)，所述第二密封部(22)环绕设置在所述第一密封部(21)的外围，所述第一密封部(21)与第二密封部(22)之间设有排气口(23)，所述排气口(23)与所述腔体(3)相连通；所述第一密封部(21)能与所述气孔(11)配合从而使所述气孔(11)与腔体(3)之间隔断或连通；所述第二密封部(22)包括有能与抽气装置的吸口贴合配合的上表面、能与所述气嘴本体(1)密封配合的下表面。
  2. 根据权利要求1所述的用于真空袋的气嘴，其特征在于：所述气嘴本体(1)上且位于所述腔体(3)内设有支承环(12)，所述支承环(12)分布在所述第二密封部(22)的下方且能与所述第二密封部(22)的下表面接触。
  3. 根据权利要求1所述的用于真空袋的气嘴，其特征在于：所述气嘴本体(1)上且位于所述腔体(3)内设有支撑结构(13)，所述支撑结构(13)分布在所述气孔(11)周围。
  4. 根据权利要求1所述的用于真空袋的气嘴，其特征在于：所述气塞(2)的上表面设置有凸筋(25)，所述凸筋(25)分布在所述排气口(23)的侧方位置且靠近所述排气口(23)。
  5. 根据权利要求1至4任一项所述的用于真空袋的气嘴，其特征在于：所述第二密封部(22)的下表面的外边缘与气嘴本体(1) 密封配合。
  6. 根据权利要求5所述的用于真空袋的气嘴，其特征在于：所述气嘴本体(1)上还设有呈环形的安装槽(14)，所述第二密封部(22)的下表面的外边缘上设有能插入所述安装槽(14)的定位凸缘(24)。
  7. 根据权利要求5所述的用于真空袋的气嘴，其特征在于：所述气嘴本体(1)上还设有压环(5)，所述压环(5)与气嘴本体(1)可拆卸固定连接，所述压环(5)压住第二密封部(22)的上表面的外边缘从而将气塞(2)压紧在所述气嘴本体(1)上。
  8. 根据权利要求5所述的用于真空袋的气嘴，其特征在于：所述气嘴本体(1)上还设有气嘴盖(4)。
  9. 根据权利要求8所述的用于真空袋的气嘴，其特征在于：所述气嘴盖(4)与所述气嘴本体(1)可拆卸固定连接。
  10. 根据权利要求8所述的用于真空袋的气嘴，其特征在于：所述气嘴盖(4)包括有盖板(41)，所述盖板(41)与所述气嘴本体(1)之间扣合连接或螺纹连接，所述盖板(41)上还设有顶柱(42)，当所述盖板(41)盖在气嘴本体(1)上时所述顶柱(42)顶压于所述第一密封部(22)的上表面。
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