One-way valve for plastic bag

Abstract

The utility model relates to the technical field of one-way valves, in particular to a one-way valve for a plastic bag, which comprises a valve seat, a mounting plate is arranged at the top of the valve seat, a valve cover is arranged at the bottom of an inner cavity of the valve seat, six first exhaust holes are annularly formed in the top of the valve cover at equal intervals, and the first exhaust holes are communicated with the valve cover. A bearing ring is arranged at the bottom of an inner cavity of the valve deck, sliding rods are fixedly connected to the connecting positions of the two sides of the top of the bearing ring and the valve deck, and a matched valve plate hole is formed in the top of the bearing ring. When gas in a plastic bag needs to be exhausted, the plastic bag is extruded, the gas in the plastic bag is conveyed into the second exhaust hole, conveyed into the third exhaust hole through the second exhaust hole and exhausted through the third exhaust hole, the exhausted gas drives the valve plate to eject upwards, and at the moment, the valve plate can stably move upwards in the sliding rod; and deviation of the valve plate during movement is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way valves, in particular to a one-way valve used for plastic bags. Background Art

[0002] Most of the packaging bags currently used are of fully sealed design. However, when used to package active foods, livestock feed and medicines, the long-term sealed environment in the packaging bags seriously affects the activity and freshness of the packaged and stored foods, livestock feed and medicines. For foods, livestock feed and medicines that generate gas on their own or require long-term fermentation, it is even more necessary to ensure that the gases generated by their own generation and the gases generated during the fermentation process can be discharged smoothly, and at the same time, impurity gases from the outside cannot be mixed in.

[0003] When a sealed plastic bag is in use, a one-way valve is required for exhaust. However, when the one-way valve is in use, the one-way valve does not have the function of limiting the valve plate, thereby preventing the valve plate from shifting during use, thereby causing the one-way valve to fail to function properly. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a one-way valve for plastic bags, which has the advantages of limiting the valve plate in the one-way valve, etc., and solves the problem that the valve plate in the one-way valve has no limiting function.

[0005] The one-way valve for plastic bags of the utility model comprises a valve seat, a mounting plate is arranged on the top of the valve seat, a valve cover is arranged on the bottom of the inner cavity of the valve seat, a first exhaust hole is opened on the top of the valve cover, and the number of the first exhaust holes is six and is opened in a ring shape with equal distances, a bearing ring is arranged on the bottom of the inner cavity of the valve cover, sliding rods are fixedly connected to the connection between the two sides of the top of the bearing ring and the valve cover, a matching valve sheet is arranged on the top of the bearing ring, and movable holes matching the sliding rods are opened on both sides of the inner cavity of the valve sheet, springs are arranged on the surface of the sliding rods at the connection between the two sides of the top of the valve sheet and the valve cover, and the springs are sleeved on the surface of the sliding rod, a third exhaust hole is opened on the bottom of the inner cavity of the valve cover, and a third exhaust hole is opened on the bottom of the inner cavity of the valve seat There is a second exhaust hole connected to the third exhaust hole. When the gas in the plastic bag needs to be discharged, the utility model squeezes the plastic bag, and the gas in the plastic bag is transmitted to the second exhaust hole, and then to the third exhaust hole through the second exhaust hole, and the gas is discharged through the third exhaust hole. The discharged gas drives the valve plate to push upward. At this time, the valve plate will move upward stably in the sliding rod, avoiding the deviation of the valve plate when moving, which will cause the one-way valve to fail to work normally. At this time, the gas will exist in the valve cover, and the gas in the valve cover will be discharged through the first exhaust hole. After the gas in the plastic bag is discharged, the valve plate is driven to move downward by the inertia of the spring, and when the valve plate moves to the bearing ring, it can play a sealing role.

[0006] In the one-way valve for plastic bags of the utility model, the number of the second exhaust holes is six, and the six second exhaust holes are arranged at equal distances at the bottom of the inner cavity of the valve seat.

[0007] In the one-way valve for plastic bags of the utility model, the number of the third exhaust holes is six, and the six third exhaust holes are arranged at equal distances at the bottom of the inner cavity of the valve cover.

[0008] The utility model is a one-way valve for plastic bags, wherein the bottom of the mounting plate is provided with an adhesive tape, and the diameter of the adhesive tape is consistent with the diameter of the mounting plate. The utility model can facilitate the installation of the one-way valve through the adhesive tape on the mounting plate, thereby avoiding the inconvenience of installing the one-way valve on the plastic bag.

[0009] In the one-way valve for plastic bags of the utility model, the connection points between the two sides of the top of the load-bearing ring and the slide rod are fixedly connected by welding, and the two slide rods are centrally symmetrically arranged with respect to the load-bearing ring.

[0010] The utility model discloses a one-way valve for plastic bags, wherein the bottom of the valve cover is fixedly connected with the bottom of the inner cavity of the valve seat by adhesive, and the bottom of the valve cover is located at the center of the bottom of the inner cavity of the valve seat.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. When the gas in the plastic bag needs to be discharged, the utility model squeezes the plastic bag, and the gas in the plastic bag is transmitted to the second exhaust hole, and then to the third exhaust hole through the second exhaust hole, and the gas is discharged through the third exhaust hole. The discharged gas drives the valve plate to push upward, and the valve plate will move upward stably in the slide rod at this time, avoiding the deviation of the valve plate when moving, which will cause the one-way valve to fail to work normally. At this time, the gas will exist in the valve cover, and the gas in the valve cover will be discharged through the first exhaust hole. After the gas in the plastic bag is discharged, the valve plate is driven to move downward by the inertia of the spring, and the valve plate moves to the bearing ring to play a sealing role.

[0013] 2. The utility model can facilitate the installation of the one-way valve by sticking on the installation plate, thereby avoiding the inconvenience of installing the one-way valve on a plastic bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the valve seat structure of the utility model when viewed from above;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve seat and valve cover of the utility model;

[0018] Figure 4 This is a schematic diagram of the valve plate structure of the utility model when viewed from above;

[0019] Figure 5 This is a schematic diagram of the structure of the load-bearing ring of the utility model.

[0020] In the figure: 1. valve seat; 2. adhesive; 3. valve cover; 4. first exhaust hole; 5. mounting plate; 6. second exhaust hole; 7. load-bearing ring; 8. third exhaust hole; 9. valve plate; 10. slide rod; 11. spring. DETAILED DESCRIPTION

[0021] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0022] See also Figure 1-5The one-way valve for plastic bags of the utility model comprises a valve seat 1, a mounting plate 5 is arranged on the top of the valve seat 1, a valve cover 3 is arranged at the bottom of the inner cavity of the valve seat 1, a first exhaust hole 4 is opened on the top of the valve cover 3, and the number of the first exhaust holes 4 is six and is equidistantly arranged in a ring shape, a bearing ring 7 is arranged at the bottom of the inner cavity of the valve cover 3, both sides of the top of the bearing ring 7 and the connection between the valve cover 3 are fixedly connected with a slide rod 10, a matching valve sheet 9 is arranged on the top of the bearing ring 7, and both sides of the inner cavity of the valve sheet 9 are provided with movable holes matching with the slide rod 10, both sides of the top of the valve sheet 9 and the connection between the valve cover 3 are provided with springs 11, and the springs 11 are sleeved on the surface of the slide rod 10, a third exhaust hole 8 is opened at the bottom of the inner cavity of the valve cover 3, and a third exhaust hole 8 is opened at the bottom of the inner cavity of the valve seat 1 The second exhaust hole 6 is connected to the three exhaust holes 8. When the gas in the plastic bag needs to be discharged, the utility model squeezes the plastic bag, and the gas in the plastic bag is transmitted to the second exhaust hole 6, and then to the third exhaust hole 8 through the second exhaust hole 6. The gas is discharged through the third exhaust hole 8, and the discharged gas drives the valve plate 9 to push upward. At this time, the valve plate 9 will move upward stably in the slide rod 10, avoiding the deviation of the valve plate 9 during movement, which will cause the one-way valve to fail to be used normally. At this time, the gas will exist in the valve cover 3, and the gas in the valve cover 3 will be discharged through the first exhaust hole 4. After the gas in the plastic bag is discharged, the valve plate 9 is driven to move downward by the inertia of the spring 11, and the valve plate 9 moves to the carrying ring 7 to play a sealing role.

[0023] The number of the second exhaust holes 6 is six, and the six second exhaust holes 6 are equidistantly arranged at the bottom of the inner cavity of the valve seat 1 .

[0024] The number of the third exhaust holes 8 is six, and the six third exhaust holes 8 are equidistantly arranged at the bottom of the inner cavity of the valve cover 3 .

[0025] The bottom of the mounting plate 5 is provided with an adhesive tape 2, and the diameter of the adhesive tape 2 is consistent with the diameter of the mounting plate 5. The utility model can facilitate the installation of the one-way valve through the adhesive tape 2 on the mounting plate 5, avoiding the inconvenience of installing the one-way valve on the plastic bag.

[0026] The connection points between the two sides of the top of the carrying ring 7 and the sliding rods 10 are fixedly connected by welding, and the two sliding rods 10 are arranged symmetrically with respect to the carrying ring 7 .

[0027] The bottom of the valve cover 3 is fixedly connected to the bottom of the inner cavity of the valve seat 1 by adhesive, and the bottom of the valve cover 3 is located at the center of the bottom of the inner cavity of the valve seat 1 .

[0028] When using the utility model: when it is necessary to discharge the gas in the plastic bag, squeeze the plastic bag, the gas in the plastic bag is transmitted to the second exhaust hole 6, and then transmitted to the third exhaust hole 8 through the second exhaust hole 6, and the gas is discharged through the third exhaust hole 8. The discharged gas drives the valve plate 9 to push upward. At this time, the valve plate 9 will move upward stably in the slide rod 10, avoiding the deviation of the valve plate 9 during movement, which will cause the one-way valve to fail to be used normally. At this time, the gas will exist in the valve cover 3, and the gas in the valve cover 3 will be discharged through the first exhaust hole 4. After the gas in the plastic bag is discharged, the valve plate 9 is driven to move downward by the inertia of the spring 11, and when the valve plate 9 moves to the supporting ring 7, it can play a sealing role.

[0029] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A one-way valve for a plastic bag, comprising a valve seat (1), characterized in that: A mounting plate (5) is provided on the top of the valve seat (1), a valve cover (3) is provided on the bottom of the inner cavity of the valve seat (1), a first exhaust hole (4) is provided on the top of the valve cover (3), and the number of the first exhaust holes (4) is six and is equidistantly arranged in a ring shape, a bearing ring (7) is provided on the bottom of the inner cavity of the valve cover (3), both sides of the top of the bearing ring (7) are fixedly connected with a slide rod (10) at the connection between the valve cover (3), a matching valve plate (9) is provided on the top of the bearing ring (7), and both sides of the inner cavity of the valve plate (9) are provided with movable holes matching with the slide rod (10), both sides of the top of the valve plate (9) are provided with springs (11) at the connection between the valve cover (3), and the springs (11) are sleeved on the surface of the slide rod (10), a third exhaust hole (8) is provided on the bottom of the inner cavity of the valve cover (3), and a second exhaust hole (6) communicating with the third exhaust hole (8) is provided on the bottom of the inner cavity of the valve seat (1).

2. A one-way valve for plastic bags according to claim 1, characterized in that: The number of the second exhaust holes (6) is six, and the six second exhaust holes (6) are arranged at equal distances at the bottom of the inner cavity of the valve seat (1).

3. A one-way valve for plastic bags according to claim 1, characterized in that: The number of the third exhaust holes (8) is six, and the six third exhaust holes (8) are arranged at equal distances at the bottom of the inner cavity of the valve cover (3).

4. A one-way valve for plastic bags according to claim 1, characterized in that: A sticky adhesive (2) is provided at the bottom of the mounting plate (5), and the diameter of the sticky adhesive (2) is consistent with the diameter of the mounting plate (5).

5. A one-way valve for plastic bags according to claim 1, characterized in that: The connection points between the two sides of the top of the carrying ring (7) and the sliding rod (10) are fixedly connected by welding, and the two sliding rods (10) are arranged in a centrally symmetrical manner with respect to the carrying ring (7).

6. A one-way valve for plastic bags according to claim 1, characterized in that: The bottom of the valve cover (3) is fixedly connected to the bottom of the inner cavity of the valve seat (1) by means of an adhesive, and the bottom of the valve cover (3) is located at the center of the bottom of the inner cavity of the valve seat (1).

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