Automatic exhaust square bottom valve bag

Abstract

The utility model discloses an automatic exhaust square-bottom valve bag, and particularly relates to the technical field of square-bottom valve bags, the automatic exhaust square-bottom valve bag comprises a square-bottom valve bag main body, two sides of the top end of the square-bottom valve bag main body are respectively provided with a feed port and an exhaust port, the top end of the feed port is communicated with a corrugated pipe I, and the top end of the exhaust port is communicated with a corrugated pipe II; annular plates are fixedly arranged in the first corrugated pipe and the second corrugated pipe, a filter screen is fixedly arranged in the annular plate in the second corrugated pipe, and a plurality of reinforcing ribs are arranged on the two annular plates in a penetrating mode. The first corrugated pipe and the second corrugated pipe are grasped to extend, the annular plate and the reinforcing ribs are arranged for supporting, it can be ensured that the first corrugated pipe and the second corrugated pipe are stably opened for use, it is avoided that the first corrugated pipe is bent to affect material conveying, meanwhile, gas in the square-bottom valve bag body is automatically exhausted through the second corrugated pipe, and the safety is high. And exhausting through extrusion is not needed, the charging efficiency is improved, and the filter screen arranged on the annular plate can prevent the materials from leaking out in the exhausting process.

Description

Technical Field

[0001] This utility model relates to the field of square-bottom valve pocket technology, specifically to an automatic venting square-bottom valve pocket. Background Technology

[0002] Square-bottom valve bags are small bulk packaging containers that are convenient, neat, and have good sealing properties. They are one of the most popular packaging materials internationally, especially suitable for export packaging. The flat bottom of the square-bottom valve bag allows it to stand upright, providing high stability and saving storage space. It is also suitable for automated production lines, facilitating mechanical filling and stacking. The square-bottom valve bag is fed through the top valve opening. With specialized filling equipment, the bag is packed into a square shape after filling, resulting in neat and aesthetically pleasing stacks. It is widely used for packaging powdered or granular solid materials and flexible items such as edible powders, grains, chemical powders, and fertilizers.

[0003] Currently, square-bottom valve bags are typically made of woven plastic fabric (PP / PE). This material is waterproof and tear-resistant, thus improving the tear resistance and service life of the square-bottom valve bag. For example, a composite woven square-bottom valve bag with prior art publication number CN217497091U utilizes a waterproof frame bag and sealing strips. The waterproof frame bag is sewn to the top of the inner bottom strip using connecting strips, which, together with the moisture-proof bottom layer, prevents the material from getting wet. The sealing strips ensure a tight seal at the bag opening, and the reserved opening can be heat-sealed using external equipment, resulting in strong sealing performance.

[0004] However, existing square-bottom valve bags contain gas during filling. When the gas is discharged through the feed pipe, it exerts a reverse force on the material. At the same time, as the filling process is nearing its end, the gas in the bag can affect the filling. Usually, the gas in the bag needs to be discharged from the vent through squeezing or other means before the bag can be filled with material. This process is time-consuming and affects the filling efficiency of the square-bottom valve bag. Based on this, the present invention provides an automatic venting square-bottom valve bag. Utility Model Content

[0005] The purpose of this invention is to provide an automatic venting square-bottom valve bag. By grasping the elongated bellows one and two, and providing support with a ring plate and multiple reinforcing ribs, it can ensure that the bellows one and two can be stably opened for use, so as to prevent the bellows one from bending and affecting the material conveying. At the same time, the gas in the main body of the square-bottom valve bag is automatically discharged through the bellows two, without the need for venting by squeezing, thus improving the loading efficiency. Furthermore, the filter screen set on the ring plate can prevent material leakage during the venting process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic venting square-bottom valve bag, comprising a square-bottom valve bag body, wherein an inlet and an outlet are respectively provided on both sides of the top of the square-bottom valve bag body, a corrugated pipe I is connected to the top of the inlet, and a corrugated pipe II is connected to the top of the outlet, both corrugated pipe I and corrugated pipe II are fixedly provided with ring plates inside, a filter screen is fixedly provided inside the ring plate inside corrugated pipe II, multiple reinforcing ribs are penetrating through both ring plates, and the bottom ends of the multiple reinforcing ribs extend into the interior of the square-bottom valve bag body, and threaded caps are fitted on the outer sides of both corrugated pipe I and corrugated pipe II, the threaded caps being connected to the square-bottom valve bag body.

[0007] Preferably, each reinforcing rib has two rubber clips fixedly installed at the bottom of its outer wall. The inner walls of the feed port and the exhaust port are machined with the same number of slots as the rubber clips. The rubber clips engage with the slots. When the first and second corrugated pipes are opened, the reinforcing rib moves up with the ring plate. After the rubber clips engage with the slots, the reinforcing rib can be kept fixed, thus providing support.

[0008] Preferably, each reinforcing rib is fixedly provided with a threaded rod at its top end, and the top ends of the two ring plates are machined with the same number of threaded holes as the threaded rods. Each threaded hole has a through hole at its bottom end, the threaded rod is threadedly connected to the threaded hole, and the bottom end of the reinforcing rib passes through the through hole.

[0009] Preferably, each reinforcing rib has a conical block fixed at its bottom end, the conical block being located below the rubber clip. Both the reinforcing rib and the conical block are made of metal materials, preferably stainless steel. Stainless steel is hard and highly corrosion-resistant, thus improving the corrosion resistance and service life of the reinforcing rib and the conical block.

[0010] Preferably, two collars are fixedly embedded on both sides of the top of the square bottom valve pocket body. The two collars are respectively fitted on the outside of the first and second bellows, and the inner walls of the two collars are machined with threaded grooves. The threaded cover is threadedly connected to the collar through the threaded grooves. The use of threaded connection makes it convenient for workers to quickly install and remove the threaded cover.

[0011] Preferably, spring pins are fixedly inserted through the outer walls of both collars, and insertion holes adapted to the spring pins are machined on the outer walls of both threaded caps. The spring pins are inserted into the insertion holes. After the threaded caps are screwed in, the spring pins are then inserted into the insertion holes, which can prevent the threaded caps from loosening.

[0012] Preferably, the top of the square-bottom valve bag body is connected to a handle, which is located on the outside of the two threaded caps to facilitate the handling and use of the square-bottom valve bag.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. By grasping the elongation of bellows one and two, and setting ring plates and multiple reinforcing ribs for support, it can be ensured that bellows one and two can be stably opened and used, so as to prevent the bending of bellows one from affecting the material conveying. At the same time, the gas in the main body of the square bottom valve bag is automatically discharged through bellows two, without the need for extrusion, improving the loading efficiency. In addition, the filter screen set on the ring plate can prevent material leakage during the venting process.

[0015] 2. The bellows one and two are sealed with threaded caps to prevent material leakage during the transportation of the square bottom valve bag body. The threaded caps are threaded to the collar and reinforced with spring pins to prevent the threaded caps from loosening and affecting the sealing performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the opening of the first and second corrugated pipes of this utility model;

[0018] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of part A in the image;

[0020] Figure 5 This is a cross-sectional view of the corrugated pipe, the ring plate, and the filter screen of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Square bottom valve bag body, 2-Inlet, 3-Exhaust port, 4-Belling pipe one, 5-Belling pipe two, 6-Ring plate, 7-Filter screen, 8-Reinforcing rib, 9-Threaded cover, 10-Rubber clamp, 11-Clip groove, 12-Threaded rod, 13-Threaded hole, 14-Through hole, 15-Conical block, 16-Collar, 17-Spring pin, 18-Insertion hole, 19-Handle. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figures 1-5The illustrated automatic venting square-bottom valve bag includes a square-bottom valve bag body 1. The top of the square-bottom valve bag body 1 has an inlet 2 and an outlet 3 on both sides. The top of the inlet 2 is connected to a corrugated pipe 4, and the top of the outlet 3 is connected to a corrugated pipe 5. Both the corrugated pipe 4 and the corrugated pipe 5 have a fixed annular plate 6 inside. A filter screen 7 is fixed inside the annular plate 6 inside the corrugated pipe 5. Multiple reinforcing ribs 8 penetrate both annular plates 6, and the bottom ends of the reinforcing ribs 8 extend into the square-bottom valve bag body 1. Threaded caps 9 are fitted onto the outer sides of both the corrugated pipe 4 and the corrugated pipe 5, and the threaded caps 9 are connected to the square-bottom valve bag body 1.

[0025] Furthermore, two rubber blocks 10 are fixedly provided at the bottom of the outer wall of each reinforcing rib 8, and the inner walls of the feed port 2 and the exhaust port 3 are machined with the same number of slots 11 as the rubber blocks 10, and the rubber blocks 10 are engaged with the slots 11.

[0026] When filling the square bottom valve bag body 1 with material, first unscrew the two threaded caps 9, then grasp the bellows 4 and 5 and extend them. At this time, the multiple reinforcing ribs 8 in the ring plate 6 move upward with the ring plate 6. When the two rubber clips 10 on the reinforcing ribs 8 move upward and lock into the slots 11, it means that the bellows 4 and 5 are stretched into place. At this time, the bellows 4 and 5 are stably opened under the support of the ring plate 6 and the multiple reinforcing ribs 8 to prevent the bellows 4 from bending and affecting the material conveying. At the same time, the gas in the square bottom valve bag body 1 is automatically discharged through the bellows 5 to prevent the gas from affecting the storage capacity of the square bottom valve bag body 1. In addition, a filter screen 7 is set on the ring plate 6 in the bellows 5 to prevent material leakage. After the material is filled, the operator compresses the bellows 4 and 5 to fit them against the square bottom valve bag body 1. The reinforcing ribs 8 are inserted into the material and stored under the action of the ring plate 6. Finally, tighten the threaded caps 9.

[0027] In this embodiment, as Figures 4-5 As shown, each reinforcing rib 8 is fixedly provided with a threaded rod 12 at its top end. The top ends of the two ring plates 6 are machined with the same number of threaded holes 13 as the threaded rods 12. Each threaded hole 13 is provided with a through hole 14 at its bottom end. The threaded rod 12 is threadedly connected to the threaded hole 13. The bottom end of the reinforcing rib 8 passes through the through hole 14. The reinforcing rib 8 is installed on the ring plate 6 using the threaded rod 12. When disassembly is required, the threaded rod 12 can be unscrewed to remove the reinforcing rib 8 from the ring plate 6 for replacement.

[0028] In this embodiment, as Figure 3 and Figure 5As shown, a conical block 15 is fixed at the bottom of each reinforcing rib 8. The conical block 15 is located below the rubber clamp block 10. Both the reinforcing rib 8 and the conical block 15 are made of metal materials, preferably stainless steel, which can improve the corrosion resistance and service life of the reinforcing rib 8 and the conical block 15.

[0029] In this embodiment, two collars 16 are fixedly embedded on both sides of the top of the square bottom valve pocket body 1. The two collars 16 are respectively fitted on the outside of the first bellows 4 and the second bellows 5, and the inner walls of the two collars 16 are machined with threaded grooves. The threaded cover 9 is threadedly connected to the collars 16 through the threaded grooves. At the same time, in actual use, sealing structures such as sealing rings can be set on the inner wall of the threaded cover 9 as needed to ensure the sealing between the threaded cover 9 and the collars 16.

[0030] In addition, spring pins 17 are fixedly inserted through the outer walls of both collars 16, and insertion holes 18 that are adapted to the spring pins 17 are machined on the outer walls of both threaded caps 9. The spring pins 17 are inserted into the insertion holes 18 to improve the stability of the threaded caps 9 and prevent the threaded caps 9 from loosening and affecting the sealing performance.

[0031] Furthermore, a handle 19 is connected to the top of the square bottom valve bag body 1. The handle 19 is located on the outside of the two threaded caps 9. Workers can grasp the handle 19 to facilitate carrying and transporting the square bottom valve bag body 1.

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic venting square base valve pocket comprising a square base valve pocket body (1) characterized by: The top of the square bottom valve bag body (1) is provided with a feed inlet (2) and an exhaust outlet (3) on both sides. The top of the feed inlet (2) is connected to a corrugated pipe (4), and the top of the exhaust outlet (3) is connected to a corrugated pipe (5). Both the first corrugated pipe (4) and the second corrugated pipe (5) are fixedly provided with ring plates (6), and the second corrugated pipe (5) is fixedly provided with filter screen (7). Both ring plates (6) are provided with multiple reinforcing ribs (8), and the bottom ends of the multiple reinforcing ribs (8) extend into the body (1) of the square bottom valve pocket. Both the first corrugated pipe (4) and the second corrugated pipe (5) are fitted with threaded caps (9) on their outer sides, and the threaded caps (9) are connected to the main body (1) of the square bottom valve pocket.

2. An automatic air relief square base valve pocket according to claim 1, wherein: Two rubber blocks (10) are fixedly provided at the bottom of the outer wall of each reinforcing rib (8). The inner walls of the feed port (2) and the exhaust port (3) are machined with the same number of slots (11) as the rubber blocks (10). The rubber blocks (10) are engaged with the slots (11).

3. An automatic air relief square base valve pocket according to claim 1, wherein: Each reinforcing rib (8) is fixed with a threaded rod (12) at its top end. The top ends of the two ring plates (6) are machined with the same number of threaded holes (13) as the threaded rods (12). Each threaded hole (13) is provided with a through hole (14) at its bottom end. The threaded rods (12) are threadedly connected to the threaded holes (13). The bottom end of the reinforcing rib (8) passes through the through hole (14).

4. An automatic air relief square base valve pocket according to claim 2, wherein: Each reinforcing rib (8) has a fixed conical block (15) at its bottom end. The conical block (15) is located below the rubber clip (10). Both the reinforcing rib (8) and the conical block (15) are made of metal.

5. An automatic air relief square base valve pocket according to claim 1, wherein: The square bottom valve pocket body (1) has two fixed collars (16) on both sides of the top end. The two collars (16) are respectively fitted on the outside of the first corrugated pipe (4) and the second corrugated pipe (5). The inner walls of the two collars (16) are machined with threaded grooves. The threaded cover (9) is threadedly connected to the collars (16) through the threaded grooves.

6. An automatic air relief square base valve pocket according to claim 5, wherein: Both collars (16) have spring pins (17) fixedly inserted through their outer walls, and both threaded caps (9) have insertion holes (18) that are compatible with the spring pins (17) on their outer walls. The spring pins (17) are inserted into the insertion holes (18).

7. An automatic air relief square base valve pocket according to claim 1, wherein: The top of the square bottom valve pocket body (1) is connected to a handle (19), which is located on the outside of the two threaded caps (9).

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