Exhaust device and packaging system

Abstract

The utility model discloses an exhaust device and a packaging system. The device comprises an air injection assembly which comprises more than two air injection holes; the gas spraying holes are distributed in the two symmetrical sides of the packaging bag and used for spraying gas to the packaging bag from the two symmetrical sides of the packaging bag so as to exhaust gas in the packaging bag; the air injection assembly is movably arranged on the supporting assembly; the arrangement of the air injection holes is matched with the size of the packaging bag. By the adoption of the scheme, complete exhaust of the packaging bag can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing, in particular to an exhaust device and a packaging system. Background Art

[0002] Packaging bags can preserve products, making them more convenient to transport and easier to store. Therefore, packaging bags have been widely used in production and life.

[0003] During the production or use of packaging bags, if too much air remains inside the bag, it will cause the bag to expand in volume, causing inconvenience in continuous production and packing operations, and increasing the risk of bag damage. Therefore, the bag needs to be vented before it is completely sealed.

[0004] However, the existing exhaust devices for venting the packaging bags do not completely vent the packaging bags, which still brings inconvenience to the continuous production and packing operations of the packaging bags, and the packaging bags still have the risk of damage. Utility Model Content

[0005] The problem to be solved by the utility model is: how to achieve complete exhaust of the packaging bag.

[0006] In order to solve the above problems, the present invention provides an exhaust device, which includes:

[0007] An air jet assembly comprising two or more air jet holes; the air jet holes are distributed on both sides of the packaging bag, and are used to jet air into the packaging bag from both sides of the packaging bag to discharge the gas in the packaging bag;

[0008] a support assembly, the jet assembly being movably disposed on the support assembly;

[0009] The arrangement of the air jet holes matches the size of the packaging bag.

[0010] In a possible embodiment, the airflow direction of the air jet hole is perpendicular to the plane direction of the packaging bag.

[0011] In a possible embodiment, the support assembly includes: a transverse support member and two or more longitudinal support members; the longitudinal support members are arranged opposite to each other in pairs, and are used to support the jet assembly from two symmetrical sides of the packaging bag; the transverse support member is used to connect the two longitudinal support members arranged opposite to each other.

[0012] In a possible embodiment, the distance between the two longitudinal support members arranged opposite to each other is adjustable.

[0013] In a possible embodiment, the longitudinal support member is provided with: a longitudinal movement structure, located on one end of the longitudinal support member close to the jet assembly, for connecting the jet assembly and driving the jet assembly to move longitudinally.

[0014] In a possible embodiment, the longitudinal movement structure includes: a movement groove provided at one end of the longitudinal support member close to the jet assembly, and a movement knob that can move longitudinally in the movement groove; the movement knob is connected to the jet assembly.

[0015] In a possible embodiment, the jet assembly includes: a first jet assembly and a second jet assembly supported by the support assembly; the first jet assembly and the second jet assembly are located on two symmetrical sides of the packaging bag.

[0016] In a possible embodiment, the first jet assembly and the second jet assembly both include: a jet pipe and a jet hole located on the jet pipe; the jet pipe is connected to the support assembly.

[0017] In a possible embodiment, an air control valve is provided on the air injection pipe.

[0018] In an embodiment of the present invention, a packaging system is further provided, comprising:

[0019] A bag feeding device, used for providing unsealed packaging bags;

[0020] The exhaust device, as described in any of the above embodiments, is used to exhaust the packaging bags provided by the bag feeding device.

[0021] Compared with the prior art, the technical solution of the embodiment of the utility model has the following advantages:

[0022] The present invention utilizes a jet assembly equipped with two or more jet holes, which can be distributed symmetrically on either side of the bag. This allows air to be ejected from both sides of the bag to expel gas from within the bag. Because the jet holes are designed to match the bag's size, the size, position, and number of the jet holes can be adjusted as the bag's size changes. This allows the size of the compressed area of the bag to be varied, achieving complete degassing. Furthermore, by varying the intensity of the gas ejected from the jet holes, liquid within the bag can be prevented from overflowing onto the bag's seal, ultimately improving degassing effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view of an exhaust device in one embodiment of the present utility model;

[0024] Figure 2 yes Figure 1 Side view of the center exhaust;

[0025] in:

[0026] 10-packaging bag, 11-first jet assembly, 12-second jet assembly, 111-first jet pipe, 121-first jet hole, 111a-first tube body, 111b-second tube body, 112-air control valve;

[0027] 211 - first longitudinal support member, 212 - second longitudinal support member, 222 - fourth longitudinal support member, 211a - first movement slot, 211b - first movement knob, 212a - second movement slot, 212b - second movement knob, 222a - fourth movement slot, 222b - fourth movement knob;

[0028] 231 - first transverse support member, 232 - second transverse support member. DETAILED DESCRIPTION

[0029] Existing exhaust devices for venting packaging bags are usually provided with two clamping bars. When venting the packaging bag, the two clamping bars squeeze the packaging bag from opposite sides of the packaging bag to vent the packaging bag.

[0030] However, the aforementioned venting device suffers from incomplete venting due to the small contact area between the clamping rod and the bag. Furthermore, when the bag contains excessive liquid, the clamping rod can easily squeeze the liquid, causing it to overflow the bag seal and trap material. This venting device is more suitable for venting heavy bags.

[0031] To address this problem, the present invention provides an exhaust device, in which an air jet assembly is provided. The air jet assembly may include more than two air jet holes, and the setting of the air jet holes matches the size of the packaging bag, thereby achieving complete exhaust of the packaging bag on both symmetrical sides of the packaging bag, thereby improving the exhaust effect.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] An embodiment of the present utility model provides an exhaust device, which includes: an air injection assembly and a support assembly.

[0034] Specifically, the air jet assembly includes two or more air jet holes, which are symmetrically located on both sides of the packaging bag and are used to eject air from the packaging bag to expel gas from the packaging bag. The air jet assembly is movably mounted on the support assembly. The arrangement of the air jet holes matches the size of the packaging bag.

[0035] In a specific implementation, the jet hole configuration includes: jet hole size, number, location, jet intensity, and airflow direction. Jet hole location, including jet hole distribution and spacing, characterizes the density of the jet holes. Jet hole distribution methods include linear distribution, staggered distribution, and stacked distribution. The larger the diameter of a single jet hole, the larger the area of the packaging bag that is squeezed by that single jet hole. The greater the number of jet holes, the larger the area of the packaging bag that is squeezed by all the jet holes. The denser the jet hole distribution, the greater the squeezing intensity on the packaging bag.

[0036] For example, when packaging bags are large, the diameter of the air jet holes can be increased, the number of air jet holes can be increased, the air jet intensity can be increased, and the air jet holes can be arranged more densely on the same side to achieve complete air evacuation of the bag. When packaging bags are small, the diameter of the air jet holes can be reduced, the number of air jet holes can be reduced, the air jet intensity can be reduced, and the air jet holes can be arranged more sparsely on the same side to achieve complete air evacuation of the bag.

[0037] In one embodiment, the airflow direction of the air jet hole can be set perpendicular to the plane direction of the packaging bag, so that the airflow ejected from the air jet hole can act on the surface of the packaging bag to the greatest extent, thereby reducing gas loss and improving exhaust efficiency.

[0038] In a specific implementation, the air injection assembly can have various structures, which are not limited here, as long as the air injection holes can be distributed on both sides of the packaging bag symmetrically, and then air can be blown into the packaging bag from both sides of the packaging bag.

[0039] In one embodiment of the present invention, the jet assembly includes: a first jet assembly and a second jet assembly supported by the support assembly; the first jet assembly and the second jet assembly are located on two symmetrical sides of the packaging bag.

[0040] In a specific implementation, the first jet assembly and the second jet assembly both include jet holes, and the jet holes in the first jet assembly and the jet holes in the second jet assembly can be symmetrically arranged.

[0041] Figure 1 This is a front view of an exhaust device in one embodiment of the present invention. Figure 2 for Figure 1 Side view of the exhaust system. Figure 1 and Figure 2 In one embodiment of the present invention, the first and second jet assemblies 11 and 12 each include a jet tube and a jet hole located on the jet tube; the jet tube is connected to the support assembly. The jet tube has an air inlet through which gas can be introduced into the jet tube and ejected from the jet hole.

[0042] The structures of the first jetting assembly 11 and the second jetting assembly 12 may be the same. Figure 1 The first jet assembly 11 includes a first jet pipe 111 and a first jet hole 121. The first jet hole 121 is located on the first jet pipe 111. Correspondingly, the second jet assembly 12 includes a second jet pipe and a second jet hole. The second jet hole is located on the second jet pipe.

[0043] In a specific implementation, the first air jet pipe 111 and the second air jet pipe are symmetrically arranged on both sides of the packaging bag 10, and the first air jet hole 121 and the second air jet hole blow air toward both sides of the packaging bag 10, thereby squeezing the packaging bag 10 from both sides respectively, thereby achieving complete exhaust of the packaging bag 10.

[0044] In one embodiment, the air injection tube includes a first tube and a second tube. One end of the first tube serves as an air inlet, and the other end is connected to the second tube. The first tube can be relatively soft, while the second tube is relatively rigid, meaning the first tube has a lower rigidity than the second tube. The first tube is more easily deformed than the second tube, facilitating connection to air supply equipment.

[0045] Of course, in other embodiments, the first tube body and the second tube body may also be configured to have the same rigidity.

[0046] Taking the first jetting assembly 11 as an example, refer to Figure 1 The first air injection pipe 111 may include a first tube body 111a and a second tube body 111b. One end of the first tube body 111a serves as an air inlet, and the other end is connected to the second tube body 111b. The first tube body 111a may be made of materials such as plastic and silicone. The second tube body 111b may be made of materials such as stainless steel. The first air injection holes 121 are distributed on the second tube body 111b.

[0047] Among them, Figure 1 In the illustrated embodiment, the first air injection holes 121 are distributed in a straight line along the second tube 111 b.

[0048] In other embodiments, the first air-jet holes 121 may also be staggered along the second tube 111 b , that is, the line connecting adjacent first air-jet holes 121 is not parallel to the extending direction of the second tube 111 b .

[0049] In other embodiments, the first air injection holes 121 may be distributed in layers along the second tube 111b. For example, the first air injection holes 121 are distributed in two rows along the second tube 111b, and the first air injection holes 121 in each row are distributed in a straight line along the second tube 111b.

[0050] In some embodiments, the number, diameter and spacing of the air injection holes on the second tube can be set according to the volume of the packaging bag. Figure 1 Seven first air jet holes 121 can be provided on the second tube 111b. Each first air jet hole 121 can jet air to one packaging bag 10, or two or more adjacent first air jet holes 121 can jet air to one packaging bag 10. Thus, the air jet holes on the first and second air jet assemblies can be used to degas one packaging bag at a time, or two or more packaging bags can be degassed simultaneously.

[0051] In some embodiments, the first tube body is provided with an air control valve, which can control the amount of gas entering the first tube body, thereby adjusting the jet intensity of a single jet hole. Figure 1 An air control valve 112 may be provided on the first tube body 111 a , thereby controlling the amount of gas introduced into the first tube body 111 a through the air control valve 112 , thereby adjusting the jet intensity of the single first jet hole 121 .

[0052] In a specific implementation, the support assembly can support the jet assembly. The support assembly can have various structures, which are not limited here.

[0053] In one embodiment, the support assembly may include: a transverse support member and two or more longitudinal support members; the longitudinal support members are arranged opposite to each other in pairs, and are used to support the jet assembly from two symmetrical sides of the packaging bag; the transverse support member is used to connect the two longitudinal support members arranged opposite to each other.

[0054] Specifically, the longitudinal supports can be divided into two groups, namely a first group of longitudinal supports and a second group of longitudinal supports. The first group of longitudinal supports and the second group of longitudinal supports are arranged opposite each other. The first group of longitudinal supports is used to support the first jet assembly, and the second group of longitudinal supports is used to support the second jet assembly. Each group of longitudinal supports can include at least two longitudinal supports.

[0055] For example, refer to Figure 1 The first set of longitudinal supports may include a first longitudinal support 211 and a second longitudinal support 212. The second set of longitudinal supports may include a third longitudinal support 222. The first longitudinal support 211 is opposite the third longitudinal support and connected by a first transverse support 231. The second longitudinal support 212 is opposite the fourth longitudinal support 222 and connected by a second transverse support 232.

[0056] In a specific implementation, the distance between the two longitudinal support members can be fixed and can be set according to the actual size of the packaging bag. Figure 2 The distance between the second longitudinal support member 212 and the fourth longitudinal support member 222 is fixed. When the packaging bag 10 is larger, the distance between the second longitudinal support member 212 and the fourth longitudinal support member 222 can be shortened, and vice versa, the distance between the second longitudinal support member 212 and the fourth longitudinal support member 222 can be increased.

[0057] In one embodiment, the distance between the two longitudinal support members is adjustable, thereby being able to more flexibly adapt to packaging bags of different sizes without changing the jet intensity of a single jet hole.

[0058] Specifically, in one embodiment, the transverse support member may be provided with: a guide rail structure; and the longitudinal support member is slidably connected to the transverse support member via the guide rail structure.

[0059] For example, refer to Figure 2 The second transverse support member 232 may be provided with a guide rail structure. The second longitudinal support member 212 and the fourth longitudinal support member 222 may be connected to the second transverse support member 232 via the guide rail structure. Furthermore, the second longitudinal support member 212 and the fourth longitudinal support member 222 may both move horizontally along the guide rail structure, thereby changing the distance between the second longitudinal support member 212 and the fourth longitudinal support member 222.

[0060] In specific implementation, the jet assembly is connected to the longitudinal support member, thereby supported by the longitudinal support member. At this time, the height of the jet assembly in the longitudinal direction can be fixed, so that the packaging bag can be placed on a specific height and exhaust.

[0061] In one embodiment, in order to vent the packaging bag more flexibly, the height of the air-jet assembly in the longitudinal direction may be adjustable.

[0062] Specifically, the longitudinal support member may be provided with: a longitudinal moving structure, located on one end of the longitudinal support member close to the jet assembly, for connecting the jet assembly and driving the jet assembly to move longitudinally.

[0063] In a specific implementation, the longitudinal movement structure may have various structures, which are not limited here.

[0064] In one embodiment of the present invention, the longitudinal movement structure may include: a movement groove provided at one end of the longitudinal support member close to the jet assembly, and a movement knob that can move longitudinally in the movement groove; the movement knob is connected to the jet assembly.

[0065] Specifically, the movable groove extends in the longitudinal direction of the longitudinal movable assembly. The movable knob can be moved longitudinally within the movable groove. When the packaging bag is replaced, the movable knob can be moved to a matching position and then used to fix the jet assembly.

[0066] For example, refer to Figure 1 The first longitudinal support member 211 may be provided with a first movable groove 211a and a first movable knob 211b. The second longitudinal support member 212 may be provided with a second movable groove 212a and a second movable knob 212b. By changing the position of the first movable knob 211b within the first movable groove 211a and the position of the second movable knob 212b within the second movable groove 212a, the longitudinal height of the first jet assembly can be changed, thereby changing the longitudinal height of the first jet hole 121.

[0067] Reference Figure 2 The third longitudinal support member 222 may be provided with a third movable groove and a third movable knob. The fourth longitudinal support member 222 may be provided with a fourth movable groove 222a and a fourth movable knob 222b. By changing the position of the third movable knob within the third movable groove and the position of the fourth movable knob 222b within the fourth movable groove 222a, the longitudinal height of the second jet assembly can be changed, thereby changing the longitudinal height of the second jet hole 121.

[0068] In one embodiment, the movable knob can have a bolt-like structure and can include a threaded portion, a sliding portion, and a fixed portion along a direction perpendicular to the depth of the movable slot. The air jet assembly can be placed on the sliding portion of the movable knob, and the bottom of the movable slot can have threads that mate with the movable knob. The position of the movable knob can be adjusted using the fixed portion, and the movable knob can be tightened so that the air jet assembly is pressed against the opening of the movable slot through the fixed portion.

[0069] As can be seen from the above, by using the exhaust device in the embodiment of the present invention, gas can be sprayed to both sides of the packaging bag, generating pressure on both sides of the packaging bag, squeezing the packaging bag, and thus exhausting the gas in the packaging bag.

[0070] Furthermore, the transverse support members can be equipped with guide rails to control the distance between the air jet holes and the packaging bag, thereby varying the pressure on the packaging bag while maintaining the same jet intensity. Furthermore, the height of the air jet holes can be controlled using movable slots to accommodate packaging bags in different positions.

[0071] The present invention also provides a packaging system, which may include:

[0072] A bag feeding device and an exhaust device according to any one of the above embodiments.

[0073] The bag feeding device is used to provide unsealed packaging bags, and the exhaust device is used to exhaust the packaging bags provided by the bag feeding device.

[0074] Specifically, refer to Figure 2 The packaging bag 10 provided to the bagging device can be a packaging bag with one side unsealed. The packaging bag 10 is placed between the first and second jet assemblies 11, 12 of the exhaust device. The first and second jet assemblies 11, 12 spray air into the packaging bag 10, thereby generating pressure on both sides of the packaging bag 10, thereby squeezing the packaging bag 10 and exhausting the gas inside the packaging bag 10.

[0075] In some embodiments, the exhaust device's transverse supports can be equipped with guide rails to control the distance between the air jet holes and the packaging bag, thereby varying the pressure applied to the bag while maintaining the same jet intensity. Furthermore, the exhaust device's movable slots can be used to control the height of the air jet holes to accommodate bags in different positions.

[0076] In a specific implementation, after the exhaust is completed, the completely exhausted packaging bag can be heat-sealed to completely seal the packaging bag.

[0077] The packaging system of the present invention can achieve the purpose of exhaust by extruding air through the air jet holes, thereby enabling an adaptive bag feeding device. In other words, no matter where the bag feeding device feeds the bag or what the size of the packaged bag is, the structure of the exhaust device can be adjusted to achieve the purpose of complete exhaust.

[0078] Although the present invention is disclosed as above, it is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. An exhaust device, characterized in that: include: An air jet assembly comprising two or more air jet holes; The air jet holes are distributed on both sides of the packaging bag, and are used to spray air into the packaging bag from both sides of the packaging bag to discharge the gas in the packaging bag; a support assembly, the jet assembly being movably disposed on the support assembly; The arrangement of the air jet holes matches the size of the packaging bag.

2. The exhaust device according to claim 1, wherein: The airflow direction of the air jet hole is perpendicular to the plane direction of the packaging bag.

3. The exhaust device according to claim 1, wherein: The support assembly includes: a transverse support member and two or more longitudinal support members; the longitudinal support members are arranged opposite to each other in pairs and are used to support the jet assembly from two symmetrical sides of the packaging bag; the transverse support member is used to connect the two longitudinal support members arranged opposite to each other.

4. The exhaust device according to claim 3, characterized in that The distance between the two longitudinal supporting members arranged opposite to each other is adjustable.

5. The exhaust device according to claim 3, wherein: The longitudinal support member is provided with a longitudinal moving structure, which is located on one end of the longitudinal support member close to the jet assembly and is used to connect the jet assembly and drive the jet assembly to move longitudinally.

6. The exhaust device according to claim 5, wherein: The longitudinal movement structure comprises: A movable groove is provided at one end of the longitudinal support member close to the jet assembly, and a movable knob is longitudinally movable in the movable groove; the movable knob is connected to the jet assembly.

7. The exhaust device according to any one of claims 1 to 6, characterized in that: The jet assembly includes: a first jet assembly and a second jet assembly supported by the support assembly; the first jet assembly and the second jet assembly are located on two symmetrical sides of the packaging bag.

8. The exhaust device according to claim 7, wherein: The first jet assembly and the second jet assembly both include: a jet pipe and a jet hole located on the jet pipe; the jet pipe is connected to the support assembly.

9. The exhaust device according to claim 8, wherein: An air control valve is provided on the air injection pipe.

10. A packaging system, characterized in that: include: A bag feeding device, used for providing unsealed packaging bags; An exhaust device as described in any one of claims 1 to 9, used to exhaust the packaging bags provided by the bag feeding device.

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