Valve bag

Abstract

The valve bag comprises a bag body and an exhaust pipe, a valve port is formed in the bag body and used for feeding of materials, the exhaust pipe is connected with the bag body, an exhaust channel of the exhaust pipe is connected with the interior of the bag body and the external environment, and during charging, the materials enter the bag body through the valve port and enter the bag body along with continuous feeding of the materials. Air in the bag body is extruded and discharged to the outside through the exhaust channel of the exhaust pipe, when materials reach the first end of the exhaust pipe, the materials can extrude the exhaust pipe, the exhaust pipe is a flexible part and can deform under the pressure of the materials, so that the exhaust channel is closed, and water vapor cannot enter the bag body through the exhaust pipe; and the problem that the materials are affected with damp and agglomerated is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a valve bag. Background Art

[0002] Valve bag, commonly known as paste bottom bag, is a multifunctional packaging bag. After filling the material, it is full into a cube, neatly stacked, and easy to store and transport. It is widely used in various industries, including food, agriculture, industry and chemical industry.

[0003] The filling process of the valve bag is actually a process of exchanging the contents with the air in the bag, that is, the air in the bag needs to be discharged to achieve smooth filling. In the prior art, exhaust holes are usually set in the bag body to ensure smooth filling. Although this can ensure smooth exhaust, water vapor will enter the bag body through the exhaust holes, causing the material in the bag to become damp and agglomerate. Therefore, the prior art needs to be improved. Utility Model Content

[0004] The utility model aims to provide a valve bag to solve the technical problem that the valve bag in the prior art is provided with an exhaust hole for exhaust, water vapor will enter the bag body through the exhaust hole, and the material in the bag body will become damp and agglomerate.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A valve bag comprises a bag body and an exhaust pipe, wherein the bag body is provided with a valve port, the exhaust pipe is a flexible member, the exhaust pipe is connected to the bag body, an exhaust passage of the exhaust pipe connects the inside of the bag body and the outside, when the material is in a loading state, the material enters the bag body through the valve port, the air in the bag body is discharged to the outside through the exhaust passage of the exhaust pipe, and when the material reaches the first end of the exhaust pipe, the material squeezes the exhaust pipe to seal the exhaust passage.

[0007] Preferably, the bag body is provided with an opening, and the diameter of the opening is consistent with the diameter of the exhaust pipe.

[0008] Preferably, the bag body is provided with a plurality of openings, and the openings correspond one-to-one to the exhaust pipes.

[0009] Preferably, the distance between the first end of the exhaust pipe and the opening is greater than 1 cm.

[0010] Preferably, the valve bag further comprises a fixing part, which is arranged in the bag body and is used to connect the bag body and the exhaust pipe to prevent the exhaust pipe from folding.

[0011] Preferably, the fixing member comprises a first adhesive member, and the first adhesive member is arranged between the bag body and the exhaust pipe to adhere the exhaust pipe to the bag body.

[0012] Preferably, the valve port is arranged on a first side of the bag body, the opening is arranged on a second side of the bag body, and the valve port is arranged opposite to the opening.

[0013] Preferably, the bag body comprises a first cowhide layer, a moisture-proof film and a second cowhide layer, wherein the moisture-proof film is arranged between the first cowhide layer and the second cowhide layer, adhesive is arranged on both sides of the moisture-proof film, and the moisture-proof film connects the first cowhide layer and the second cowhide layer.

[0014] Preferably, the valve bag further includes a PE film, and the PE film is connected to the inner wall of the valve port.

[0015] Preferably, the valve bag further comprises a second adhesive member, and the second adhesive member is arranged on the inner side of the PE film to seal the valve port.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model designs a valve bag, which comprises a bag body and an exhaust pipe. The bag body is provided with a valve port for the entry of materials, and the exhaust pipe is connected to the bag body, and its exhaust channel connects the inside of the bag body with the external environment. When loading, the materials enter the bag body through the valve port. As the materials continue to enter, the air in the bag body is squeezed and discharged to the outside through the exhaust channel of the exhaust pipe. When the materials reach the first end of the exhaust pipe, the materials will squeeze the exhaust pipe. Since the exhaust pipe is a flexible part, it will deform under the pressure of the materials, thereby sealing the exhaust channel. Water vapor cannot enter the bag body through the exhaust pipe, thereby avoiding the problem of material agglomeration due to moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the valve bag of the utility model;

[0019] Figure 2 It is a cross-sectional view of the valve bag of the utility model.

[0020] Illustration Description:

[0021] 10. Bag body; 11. Valve port; 12. Exhaust pipe; 13. Exhaust channel; 14. Opening. DETAILED DESCRIPTION

[0022] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, 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.

[0023] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0024] See also Figure 1 and Figure 2 As shown, the utility model designs a valve bag, which includes a bag body 10 and an exhaust pipe 12. The bag body 10 is provided with a valve port 11, and the exhaust pipe 12 is a flexible member. The exhaust pipe 12 is connected to the bag body 10, and an exhaust channel 13 of the exhaust pipe 12 is connected to the inside of the bag body 10 and the outside. When the material is in the loading state, the material enters the bag body 10 through the valve port 11, and the air in the bag body 10 is discharged to the outside through the exhaust channel 13 of the exhaust pipe 12. When the material reaches the first end of the exhaust pipe 12, the material squeezes the exhaust pipe 12 to close the exhaust channel 13.

[0025] It should be noted that when loading, the material enters the bag body 10 through the valve port 11. As the material continues to enter, the air in the bag body 10 is squeezed and discharged to the outside through the exhaust channel 13 of the exhaust pipe 12. When the material reaches the first end of the exhaust pipe 12, the material will squeeze the exhaust pipe 12. Since the exhaust pipe 12 is a flexible part, it will deform under the pressure of the material, thereby sealing the exhaust channel 13. Water vapor cannot enter the bag body 10 through the exhaust pipe 12, thereby avoiding the problem of material moisture and agglomeration.

[0026] Specifically, the bag body 10 is provided with an opening 14 , and the diameter of the opening 14 is consistent with the diameter of the exhaust pipe 12 .

[0027] Specifically, the valve port 11 is disposed on a first side of the bag body 10 , and the opening 14 is disposed on a second side of the bag body 10 , and the valve port 11 and the opening 14 are disposed opposite to each other.

[0028] Since the opening 14 and the exhaust pipe 12 have the same diameter, the exhaust pipe 12 can be tightly inserted into the bag body 10, thereby avoiding the problem of a gap between the opening 14 and the exhaust pipe 12, through which water vapor enters the bag body 10 and causes the material to become damp and agglomerated.

[0029] Specifically, the bag body 10 is provided with a plurality of openings 14, and the openings 14 correspond to the exhaust pipes 12 one by one. During the loading process, the plurality of exhaust pipes 12 work simultaneously, and the air inside the bag body 10 can be discharged more quickly, further improving the loading efficiency. When the material gradually increases and approaches the port of each exhaust pipe 12, each exhaust pipe 12 will be squeezed by the material, thereby sealing the respective exhaust passages 13.

[0030] Specifically, the distance between the first end of the exhaust pipe 12 and the opening 14 is greater than 1 cm. When the material has not reached the first end of the exhaust pipe 12, the air can be discharged smoothly without being directly blocked by the material. When the material gradually increases and approaches the first end of the exhaust pipe 12, the material will naturally accumulate around the exhaust pipe 12 and gradually close the exhaust channel 13. When the exhaust channel 13 is closed, the air flow path is shorter. At this time, continue to load the material, and the remaining air in the bag is discharged through the valve port 11, reducing the impact of the air on the loading process. Of course, it should be noted that the distance parameters between the first end of the exhaust pipe 12 and the opening 14 of the utility model can be adjusted by people according to actual needs, and the utility model does not limit this.

[0031] Specifically, the valve bag further includes a fixing piece, which is disposed in the bag body 10 and is used to connect the bag body 10 and the exhaust pipe 12 to prevent the exhaust pipe 12 from folding.

[0032] Specifically, the fixing member includes a first adhesive member, which is disposed between the bag body 10 and the exhaust pipe 12 to adhere the exhaust pipe 12 to the bag body 10 .

[0033] The first adhesive member of the utility model firmly connects the exhaust pipe 12 and the bag body 10 together through its adhesive properties. This connection method is simple and quick, and at the same time has a high degree of firmness, which can ensure that the exhaust pipe 12 is fixed in the bag body 10, and helps to prevent the exhaust pipe 12 from folding, twisting or shifting during the loading process, which may cause the exhaust efficiency to be reduced.

[0034] Specifically, the bag body 10 includes a first cowhide layer, a moisture-proof film and a second cowhide layer. The moisture-proof film is arranged between the first cowhide layer and the second cowhide layer. Adhesive is arranged on both sides of the moisture-proof film. The moisture-proof film connects the first cowhide layer and the second cowhide layer.

[0035] Specifically, the valve bag further includes a PE film, and the PE film is connected to the inner wall of the valve port 11 .

[0036] Specifically, the valve bag further includes a second adhesive member, which is disposed on the inner side of the PE film to seal the valve port 11 .

[0037] The bag body 10 is composed of a first cowhide layer, a moisture-proof film and a second cowhide layer. This multi-layer structure design provides the bag body 10 with better physical properties and protection effects. The cowhide layer usually has the characteristics of wear resistance and tear resistance, which can ensure that the bag body 10 is not easily damaged during transportation and use. The setting of the moisture-proof film plays a role in preventing the material from getting damp. It can effectively block external moisture and keep the environment inside the bag dry. After the loading is completed, the valve port 11 can be sealed by using the viscosity of the second adhesive member, which is very simple. Of course, the PE film can also be hot-pressed to achieve the sealing of the valve port 11. The utility model does not limit this.

[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A valve bag, characterized in that: The invention comprises a bag body and an exhaust pipe, wherein the bag body is provided with a valve port, the exhaust pipe is a flexible member, the exhaust pipe is connected to the bag body, an exhaust passage of the exhaust pipe is connected to the inside of the bag body and the outside, when the material is in the loading state, the material enters the bag body through the valve port, the air in the bag body is discharged to the outside through the exhaust passage of the exhaust pipe, and when the material reaches the first end of the exhaust pipe, the material squeezes the exhaust pipe to seal the exhaust passage.

2. The valve bag according to claim 1, characterized in that: The bag body is provided with an opening, and the diameter of the opening is consistent with the diameter of the exhaust pipe.

3. The valve bag according to claim 2, characterized in that: The bag body is provided with a plurality of openings, and the openings correspond to the exhaust pipes one by one.

4. The valve bag according to claim 2, characterized in that: The distance between the first end of the exhaust pipe and the opening is greater than 1 cm.

5. The valve bag according to claim 1, characterized in that: It also includes a fixing piece, which is arranged in the bag body and is used to connect the bag body and the exhaust pipe to prevent the exhaust pipe from folding.

6. The valve bag according to claim 5, characterized in that: The fixing member includes a first adhesive member, and the first adhesive member is arranged between the bag body and the exhaust pipe to adhere the exhaust pipe to the bag body.

7. The valve bag according to claim 2, characterized in that: The valve port is arranged at the first side of the bag body, the opening is arranged at the second side of the bag body, and the valve port is arranged opposite to the opening.

8. The valve bag according to claim 1, characterized in that: The bag body comprises a first cowhide layer, a moisture-proof film and a second cowhide layer, wherein the moisture-proof film is arranged between the first cowhide layer and the second cowhide layer, adhesive is arranged on both sides of the moisture-proof film, and the moisture-proof film connects the first cowhide layer and the second cowhide layer.

9. The valve bag according to claim 1, characterized in that: It also includes a PE film, which is connected to the inner wall of the valve port.

10. The valve bag according to claim 9, characterized in that: It also includes a second adhesive member, which is arranged on the inner side of the PE film to seal the valve port.

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