One-way exhaust packaging bag

Abstract

The utility model discloses a one-way exhaust packaging bag in the field of packaging bags, which comprises a packaging bag body and an exhaust mechanism, the exhaust mechanism is fixedly connected to the middle of the rear part of the top of the packaging bag body, and a shell is fixedly connected to the middle of the rear part of the top of the packaging bag body. The packaging bag comprises a shell, a threaded rod is in threaded connection with the middle of the top of the shell in a penetrating mode through threads, a rotary knob is fixedly connected to the top end of the threaded rod, an extrusion disc is fixedly connected to the bottom end of the threaded rod, and a connecting plate is slidably connected to an inner cavity of the shell. A sealing gasket is extruded, a piston is moved, a compression spring is extruded, the piston is moved to the top of an air outlet pipe, and air is exhausted, so that the air is prevented from being gathered in the packaging bag all the time, the packaging bag is prevented from expanding and cracking, external air is prevented from entering the packaging bag, and the quality of articles is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, in particular to a packaging bag with one-way exhaust. Background Art

[0002] Packaging bags refer to bags used to package various supplies, which make it convenient to transport and store goods during the production and circulation process. They are widely used in daily life and industrial production. Most of the packaging bags used for packaging are fully sealed.

[0003] Most of the current packaging bags are fully sealed. When used to package food, livestock feed and medicines that generate gas on their own or require long-term fermentation, the gas is not easy to discharge. During the packaging and transportation process, the bag is prone to bulging and cracking. The outside air and oxygen enter the packaging bag, affecting the quality of the goods. For this reason, we proposed a one-way exhaust packaging bag. Utility Model Content

[0004] The purpose of the utility model is to provide a packaging bag with one-way exhaust so as to solve the problem mentioned in the above background technology that most of the current packaging bags are of fully sealed design, and when used for packaging to generate gas autonomously, the gas is not easy to be discharged, and the bag is prone to bulging and cracking during packaging and transportation, and the outside air and oxygen enter the packaging bag, affecting the quality of the goods.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a packaging bag with one-way exhaust, comprising a packaging bag body and an exhaust mechanism, the exhaust mechanism being fixedly connected to the middle part of the top rear part of the packaging bag body, the exhaust mechanism comprising an outer shell, a threaded rod, a knob, an extrusion disk, a connecting plate, a compression spring, a piston, a sealing gasket, a retaining ring and an air outlet pipe, the middle part of the top rear part of the packaging bag body is fixedly connected to the outer shell, the middle part of the top of the outer shell is screwed with a thread, the top of the threaded rod is fixedly connected to the knob, the bottom end of the threaded rod is fixedly connected to the extrusion disk, the inner cavity of the outer shell is slidably connected to the connecting plate, the bottom of the connecting plate is fixedly connected to the compression spring, the bottom end of the compression spring is fixedly connected to the piston, the bottom of the piston is fixedly bonded with a sealing gasket, the bottom of the inner wall of the outer shell is fixedly connected to the retaining ring, and the bottom of the outer wall of the outer shell is fixedly connected to the air outlet pipe.

[0006] As a further description of the above technical solution:

[0007] The outer side wall of the knob is provided with anti-slip grooves.

[0008] As a further description of the above technical solution:

[0009] The connecting plate is located at the bottom of the extrusion disk, and the outer side wall of the connecting plate is in contact with the inner side wall of the shell.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the piston and the outer wall of the sealing gasket are evenly fitted with the inner wall of the shell, and the retaining ring is located at the bottom of the sealing gasket.

[0012] As a further description of the above technical solution:

[0013] The outer side of the air outlet pipe is connected to a dustproof mechanism, and the dustproof mechanism includes a positioning strip, a fixing hole, a filter cover, a positioning groove, a fixing rod, a pull plate and a connecting spring. The outer side wall of the air outlet pipe is symmetrically fixedly connected with the positioning strip, the top of the outer side wall of the air outlet pipe is provided with a fixing hole, the outer side of the air outlet pipe is sleeved with a filter cover, the inner side wall of the filter cover is symmetrically provided with positioning grooves, the top of the outer side wall of the filter cover is slidably connected with a fixing rod, the top of the fixing rod is fixedly connected with a pull plate, and the outer side of the fixing rod is sleeved with a connecting spring.

[0014] As a further description of the above technical solution:

[0015] The top end and the bottom end of the connecting spring are fixedly connected to the bottom of the pull plate and the outer side wall of the filter cover respectively.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. When gas is generated inside the packaging bag with one-way exhaust, when the air pressure is too high, the sealing pad is squeezed to move the piston, and the compression spring is squeezed to move the piston to the top of the air outlet pipe to discharge the gas, thereby preventing the gas from accumulating inside the packaging bag, preventing the packaging bag from bursting, and preventing the outside from entering the packaging bag to avoid affecting the quality of the goods. At the same time, by turning the knob, the threaded rod is driven to rotate, so that the threaded rod drives the extrusion plate to descend and squeeze the connecting plate, thereby changing the deformation of the compression spring, which is convenient for adjusting the amount of gas discharged according to specific circumstances.

[0018] 2. For the one-way exhaust packaging bag, pull the pull plate to drive the fixing rod to rise, stretch the connecting spring, align the positioning groove with the positioning bar, and make the filter cover sleeve on the outside of the outlet pipe. Loosen the pull plate, and reset the connecting spring to make the fixing rod embedded in the fixing hole to fix the filter cover. The setting of the filter cover can prevent external impurities and dust from entering the outlet pipe, ensure the cleanliness of the exhaust mechanism, and prevent pollution of the inside of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a one-way exhaust packaging bag proposed by the utility model;

[0020] Figure 2This is a schematic diagram of the exhaust mechanism structure of a one-way exhaust packaging bag proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the installation structure of a positioning strip of a packaging bag with one-way exhaust proposed by the utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of a connecting spring of a one-way exhaust packaging bag proposed by the utility model.

[0023] In the figure: 100, packaging bag body; 200, exhaust mechanism; 210, shell; 220, threaded rod; 230, knob; 240, extrusion plate; 250, connecting plate; 260, compression spring; 270, piston; 271, sealing gasket; 280, retaining ring; 290, air outlet pipe; 300, dustproof mechanism; 310, positioning strip; 320, fixing hole; 330, filter cover; 340, positioning groove; 350, fixing rod; 360, pull plate; 370, connecting spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model provides a packaging bag with one-way exhaust, which prevents gas from accumulating inside the packaging bag, prevents the packaging bag from bursting, and prevents the outside from entering the packaging bag to avoid affecting the quality of the goods. Figure 1-4 , comprising a packaging bag body 100 and an exhaust mechanism 200;

[0028] Please refer again Figure 1 , the packaging bag body 100 is used to install the exhaust mechanism 200;

[0029] Please refer again Figure 2 , the exhaust mechanism 200 is fixedly connected to the middle of the top rear part of the packaging bag body 100;

[0030] Please refer again Figure 2 , the exhaust mechanism 200 includes a housing 210, a threaded rod 220, a knob 230, a squeeze disc 240, a connecting plate 250, a compression spring 260, a piston 270, a sealing gasket 271, a retaining ring 280 and an exhaust pipe 290;

[0031] Please refer again Figure 2 The middle part of the top rear part of the packaging bag body 100 is fixedly connected with a shell 210, a threaded rod 220 is threadedly connected through a thread through the middle part of the top of the shell 210, a knob 230 is fixedly connected to the top of the threaded rod 220, a pressing plate 240 is fixedly connected to the bottom end of the threaded rod 220, and a connecting plate 250 is slidably connected to the inner cavity of the shell 210;

[0032] Please refer again Figure 2 A compression spring 260 is fixedly connected to the bottom of the connecting plate 250, a piston 270 is fixedly connected to the bottom end of the compression spring 260, a sealing gasket 271 is fixedly bonded to the bottom of the piston 270, a retaining ring 280 is fixedly connected to the bottom of the inner wall of the outer shell 210, and an air outlet pipe 290 is fixedly connected to the bottom of the outer wall of the outer shell 210.

[0033] To summarize, when gas is generated inside the packaging bag, when the air pressure is too high, the sealing pad 271 is squeezed to move the piston 270, and the compression spring 260 is squeezed to move the piston 270 to the top of the air outlet pipe 290 to discharge the gas, thereby preventing the gas from accumulating inside the packaging bag, preventing the packaging bag from bursting, and preventing the outside from entering the packaging bag to avoid affecting the quality of the items. At the same time, by turning the knob 230, the threaded rod 220 is driven to rotate, so that the threaded rod 220 drives the extrusion plate 240 to descend and squeeze the connecting plate 250, thereby changing the deformation of the compression spring 260, so as to facilitate the adjustment of the amount of gas discharged according to specific circumstances.

[0034] Please refer again Figure 2 The outer wall of the knob 230 is provided with anti-slip grooves.

[0035] Please refer again Figure 2 The connecting plate 250 is located at the bottom of the extrusion disk 240 , and the outer wall of the connecting plate 250 is in contact with the inner wall of the outer shell 210 .

[0036] Please refer again Figure 2 The outer wall of the piston 270 and the outer wall of the sealing gasket 271 are evenly fitted with the inner wall of the housing 210 , and the retaining ring 280 is located at the bottom of the sealing gasket 271 .

[0037] Please refer again Figure 3-4 The outer side of the air outlet pipe 290 is connected to a dustproof mechanism 300, which includes a positioning bar 310, a fixing hole 320, a filter cover 330, a positioning groove 340, a fixing rod 350, a pull plate 360 ​​and a connecting spring 370. The outer side wall of the air outlet pipe 290 is symmetrically fixedly connected with the positioning bar 310, the top of the outer side wall of the air outlet pipe 290 is provided with a fixing hole 320, the outer side of the air outlet pipe 290 is sleeved with a filter cover 330, the inner side wall of the filter cover 330 is symmetrically provided with positioning grooves 340, the top of the outer side wall of the filter cover 330 is slidably connected with a fixing rod 350, the top of the fixing rod 350 is fixedly connected with a pull plate 360, and the outer side of the fixing rod 350 is sleeved with a connecting spring 370.

[0038] Please refer again Figure 4 The top and bottom ends of the connecting spring 370 are fixedly connected to the bottom of the pull plate 360 ​​and the outer side wall of the filter cover 330 respectively.

[0039] To summarize, by pulling the pull plate 360, the fixing rod 350 is driven to rise, the connecting spring 370 is stretched, the positioning groove 340 is aligned with the positioning bar 310, and the filter cover 330 is sleeved on the outside of the outlet pipe 290. The pull plate 360 ​​is loosened, and the fixing rod 350 is embedded in the fixing hole 320 by resetting the connecting spring 370 to fix the filter cover 330. The setting of the filter cover 330 can prevent external impurities and dust from entering the outlet pipe 290, thereby ensuring the cleanliness of the interior of the exhaust mechanism 200 and preventing contamination of the interior of the packaging bag.

[0040] During specific use, when gas is generated inside the packaging bag, when the air pressure is too high, the sealing gasket 271 is squeezed to move the piston 270, and the compression spring 260 is squeezed to move the piston 270 to the top of the air outlet pipe 290 to discharge the gas, thereby preventing the gas from accumulating inside the packaging bag, preventing the packaging bag from bursting, and preventing the outside from entering the packaging bag to avoid affecting the quality of the goods. By pulling the pull plate 360, the fixing rod 350 is driven to rise, the connecting spring 370 is stretched, the positioning groove 340 is aligned with the positioning bar 310, and the filter cover 330 is sleeved on the outside of the air outlet pipe 290, the pull plate 360 ​​is loosened, and the connecting spring 370 is reset to make the fixing rod 350 embedded in the fixing hole 320, and the filter cover 330 is fixed. Through the setting of the filter cover 330, impurities and dust from the outside are prevented from entering the air outlet pipe 290.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A packaging bag with one-way exhaust, characterized in that: The invention comprises a packaging bag body (100) and an exhaust mechanism (200), wherein the exhaust mechanism (200) is fixedly connected to the middle of the top rear part of the packaging bag body (100), and the exhaust mechanism (200) comprises an outer shell (210), a threaded rod (220), a knob (230), an extrusion disc (240), a connecting plate (250), a compression spring (260), a piston (270), a sealing gasket (271), a retaining ring (280) and an exhaust pipe (290), wherein the middle of the top rear part of the packaging bag body (100) is fixedly connected to the outer shell (210), and the threaded rod (220) is screwed through the middle of the top of the outer shell (210) via a thread. ), the top end of the threaded rod (220) is fixedly connected to a knob (230), the bottom end of the threaded rod (220) is fixedly connected to a compression plate (240), the inner cavity of the shell (210) is slidably connected to a connecting plate (250), the bottom of the connecting plate (250) is fixedly connected to a compression spring (260), the bottom end of the compression spring (260) is fixedly connected to a piston (270), the bottom of the piston (270) is fixedly bonded to a sealing gasket (271), the bottom of the inner wall of the shell (210) is fixedly connected to a retaining ring (280), and the bottom of the outer wall of the shell (210) is fixedly connected to an air outlet pipe (290).

2. A one-way exhaust packaging bag according to claim 1, characterized in that: The outer side wall of the knob (230) is provided with anti-slip grooves.

3. The one-way exhaust packaging bag according to claim 1, characterized in that: The connecting plate (250) is located at the bottom of the extrusion plate (240), and the outer side wall of the connecting plate (250) is in contact with the inner side wall of the outer shell (210).

4. The one-way exhaust packaging bag according to claim 1, characterized in that: The outer wall of the piston (270) and the outer wall of the sealing gasket (271) are evenly fitted with the inner wall of the housing (210), and the retaining ring (280) is located at the bottom of the sealing gasket (271).

5. The one-way exhaust packaging bag according to claim 1, characterized in that: The outer side of the air outlet pipe (290) is connected to a dustproof mechanism (300), and the dustproof mechanism (300) comprises a positioning strip (310), a fixing hole (320), a filter screen cover (330), a positioning groove (340), a fixing rod (350), a pull plate (360) and a connecting spring (370). The outer side wall of the air outlet pipe (290) is symmetrically fixedly connected to the positioning strip (310), the top of the outer side wall of the air outlet pipe (290) is provided with a fixing hole (320), the outer side of the air outlet pipe (290) is sleeved with a filter screen cover (330), the inner side wall of the filter screen cover (330) is symmetrically provided with positioning grooves (340), the top of the outer side wall of the filter screen cover (330) is penetrated by a fixing rod (350) for sliding connection, the top of the fixing rod (350) is fixedly connected to the pull plate (360), and the outer side of the fixing rod (350) is sleeved with a connecting spring (370).

6. The one-way exhaust packaging bag according to claim 5, characterized in that: The top end and the bottom end of the connecting spring (370) are fixedly connected to the bottom of the pull plate (360) and the outer side wall of the filter cover (330) respectively.

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