A bottom closed double-layer bag body structure

Abstract

The utility model relates to the filter bag technical field of cloth bag dust collector, concretely is a bottom closed double -layer bag body structure, including the bag body, the top of bag body is integrally formed with the inside -out bag, the inside -out bag stretches out the inside of bag body, the bottom of inside -out bag is connected on the bottom plate of bag body through the spacing element, the inner ring surface of bag body is fixed with rubber ring no.

Description

Technical Field

[0001] This utility model relates to the field of filter bags for baghouse dust collectors, specifically a bottom-closed double-layer bag structure. Background Technology

[0002] In existing fabric filter bag structures, conventional bags are often quite simple, mostly single-layer structures. This type of single-layer bag has several shortcomings when dealing with certain special application scenarios. For example, in scenarios requiring higher filtration accuracy, better protective performance, or stronger structural stability, single-layer bags are difficult to meet the actual needs.

[0003] When a single-layer filter bag is used on a frame, it is easy for the bag to not be tightly connected to the frame. Under external pulling force or changes in internal pressure, the bag may slip off the frame or shift, affecting normal use. Moreover, the protective capacity of a single-layer filter bag is limited, and it cannot provide an effective solution for situations requiring double protection or multi-layer filtration.

[0004] Furthermore, in applications requiring high structural strength for fabric bags, single-layer bags, lacking internal support and reinforcement, are prone to damage and deformation, shortening their lifespan and increasing operating costs. Therefore, developing a novel fabric bag structure that addresses these issues is of significant practical importance. Utility Model Content

[0005] The purpose of this invention is to provide a bottom-closed double-layer bag structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bottom-closed double-layer bag structure, including a bag body, the top of which is integrally formed with an inward-folding interlayer bag, the inward-folding interlayer bag extending into the interior of the bag body, the bottom end of the inward-folding interlayer bag being connected to the bottom plate of the bag body through a limiting component, a rubber ring one being fixed on the inner ring surface of the bag body, and a rubber ring two being fitted and fixed on the outer ring surface of the inward-folding interlayer bag, both rubber ring one and rubber ring two being fastened to the crossbeam ring of the bag frame.

[0007] Preferably, a rubber sleeve is fixed to the top of the bag body. The rubber sleeve has a U-shaped ring plate structure, and the inner ring plate of the rubber sleeve is fixed to the outer ring surface of the inward-folding interlayer bag.

[0008] Preferably, the limiting component includes a male Velcro ring, a connecting strip, and a female Velcro patch. The male Velcro ring is fixed to the top surface of the bottom plate of the bag body. Multiple connecting strips are provided, and each connecting strip is fixed to the bottom end of the inverted interlayer bag. The female Velcro patch corresponds to each connecting strip, and the female Velcro patch is fixed to the bottom surface of the connecting strip. The female Velcro patch and the male Velcro ring are connected in cooperation.

[0009] Preferably, the connecting strip has a traction strip fixed at the end away from the inner folded interlayer bag, and the traction strip is in the shape of a "U".

[0010] Preferably, the inner ring surface of the rubber ring is provided with a groove, which is an annular groove. After the bag body is fitted onto the bag frame, the groove is fastened to the crossbeam ring of the bag frame. The surface of the rubber ring is provided with a slit, which is located at the vertical bar of the bag frame.

[0011] Preferably, the outer ring surface of the second rubber ring is provided with a second groove, which is an annular groove. After the inwardly folded interlayer bag is inserted into the bag frame, the second groove is fastened to the crossbeam ring of the bag frame. The surface of the second rubber ring is provided with a second slit, which is located at the vertical bar of the bag frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model proposes a bottom-closed double-layer bag structure. An inward-folding interlayer bag is integrally formed at the top of the bag body, and this interlayer bag is then fitted to the bag body to form a double-layer structure. Compared to traditional single-layer bags, this double-layer structure significantly enhances overall strength and stability, better withstands external pulling forces and internal pressure changes, is less prone to damage and deformation, effectively extends the bag's service life, and reduces usage costs. A rubber sleeve is fastened to the top of the frame, and a limiting component connects the bottom of the inward-folding interlayer bag to the bottom plate of the bag body. During installation, after the inward-folding interlayer bag and the bag body are fitted onto the frame, pressing the connecting strips connects the Velcro female and male loops. The connection of multiple connecting strips pulls the inward-folding interlayer bag downwards, enclosing it inside the frame. Simultaneously, the rubber sleeve fastens to the top of the frame. This double-fixing method ensures a tight connection between the bag body, the inward-folding interlayer bag, and the frame, preventing slippage or displacement, guaranteeing stable installation of the bag on the frame, and improving reliability.

[0013] The first rubber ring, fixed to the inner circumference of the bag, and the second rubber ring, fixed to the outer circumference of the inward-folding interlayer bag, both fasten onto the crossbeam ring of the bag frame. The first groove on the inner circumference of the first rubber ring and the second groove on the outer circumference of the second rubber ring respectively engage with the crossbeam ring of the frame, further enhancing the connection strength between the bag body and the inward-folding interlayer bag and the frame. Furthermore, the first and second slits on the surfaces of the first and second rubber rings are located at the vertical bars of the bag frame. This design allows the rubber rings to better adapt to the shape of the frame, ensuring a tight connection while not excessively hindering the installation and disassembly of the bag, thus facilitating operation. Attached Figure Description Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Sectional view of the structure at point AA; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point C; Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point D; Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point E in the middle.

[0014] In the diagram: 1. Bag body; 2. Inner folded interlayer bag; 3. Rubber sleeve; 4. Male Velcro ring; 5. Connecting strip; 6. Female Velcro patch; 7. Traction strip; 8. Rubber ring one; 9. Slot one; 10. Rubber ring two; 11. Slot two. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Please see Figures 1-6 This utility model provides a technical solution: a bottom-closed double-layer bag structure, including a bag body 1, with an inwardly turned interlayer bag 2 integrally formed on the top of the bag body 1, the inwardly turned interlayer bag 2 extending into the interior of the bag body 1, and a rubber sleeve 3 fixed on the top of the bag body 1. The rubber sleeve 3 has a ring plate structure with a "U"-shaped cross section, and the inner ring plate of the rubber sleeve 3 is fixed to the outer ring surface of the inwardly turned interlayer bag 2.

[0017] Turn the inward-folded interlayer bag 2 outward from the inside of the bag body 1, then put the turned-out inward-folded interlayer bag 2 and the bag body 1 onto the bag frame, pull the bag body 1 upward so that the bottom of the bag body 1 touches the bottom of the frame, and then turn the inward-folded interlayer bag 2 back and insert it into the inside of the frame. At this time, the rubber sleeve 3 is fastened to the top of the frame, and the bag body 1 and the inward-folded interlayer bag 2 form a double-layer structure.

[0018] In order to connect the bottom of the inward-folding interlayer bag 2 to the bottom plate of the bag body 1, the following is proposed: The bottom end of the inverted sandwich bag 2 is connected to the bottom plate of the bag body 1 through a limiting component. The limiting component includes a male Velcro ring 4, a connecting strip 5, and a female Velcro patch 6. The male Velcro ring 4 is fixed to the top surface of the bottom plate of the bag body 1. There are multiple connecting strips 5, and all of them are fixed to the bottom end of the inverted sandwich bag 2. The female Velcro patch 6 corresponds to the connecting strip 5 one by one. The female Velcro patch 6 is fixed to the bottom surface of the connecting strip 5, and the female Velcro patch 6 and the male Velcro ring 4 are connected together. A traction strip 7 is fixed to the end of the connecting strip 5 away from the inverted sandwich bag 2. The traction strip 7 is in the shape of a "U".

[0019] After the inward-folding interlayer bag 2 is pushed into the bag frame, the connecting strip 5 is pressed to connect the magic female patch 6 to the magic male patch ring 4. After multiple connecting strips 5 are connected to the magic male patch ring 4 on the bottom plate of the bag body 1 through the corresponding magic female patch 6, the inward-folding interlayer bag 2 is pulled down to protect the inside of the frame.

[0020] To ensure the stable installation of bag body 1 and inward-folding interlayer bag 2 on the frame, the following proposed method is proposed: A rubber ring 8 is fixed to the inner ring surface of bag body 1, and a rubber ring 10 is fixed to the outer ring surface of inward-folding sandwich bag 2. Both rubber rings 8 and 10 are fastened to the crossbeam ring of the bag frame. A groove 9, annular in shape, is formed on the inner ring surface of rubber ring 8. After bag body 1 is fitted onto the bag frame, groove 9 fastens to the crossbeam ring of the bag frame. A slit 1 is formed on the surface of rubber ring 8, located at the vertical post of the bag frame. A groove 11, annular in shape, is formed on the outer ring surface of rubber ring 10. After inward-folding sandwich bag 2 is inserted into the bag frame, groove 11 fastens to the crossbeam ring of the bag frame. A slit 2 is formed on the surface of rubber ring 10, located at the vertical post of the bag frame. Thus, bag body 1 and inward-folding sandwich bag 2 are stably fitted onto the frame, forming a double-layer structure.

[0021] How to use the bottom-closed double-layer bag structure: The inward-folding interlayer bag 2 is folded upwards from the inside of the bag body 1. The folded-inward-folding interlayer bag 2 and the bag body 1 are then placed on the bag frame. The bag body 1 is pulled upwards until its bottom rests against the bottom of the frame. The inward-folding interlayer bag 2 is then folded back and inserted into the frame. At this point, the rubber sleeve 3 is fastened to the top of the frame, and the bag body 1 and the inward-folding interlayer bag 2 form a preliminary double-layer structure. After the inward-folding interlayer bag 2 is pushed into the bag frame, the connecting strip 5 is pressed down with the traction strip 7 to connect the Velcro female patch 6 to the Velcro male patch ring 4. After multiple connecting strips 5 are connected to the Velcro male patch ring 4 on the bottom plate of the bag body 1 through the corresponding Velcro female patches 6, the inward-folding interlayer bag 2 is pulled downwards to protect the inside of the frame. After bag body 1 is fitted onto the bag frame, it is fastened to the crossbeam ring of the bag frame using the groove 9 on the inner ring surface of rubber ring 8, with the seam 1 on the surface of rubber ring 8 positioned at the vertical post of the bag frame. After the inward-folding interlayer bag 2 is inserted into the bag frame, it is fastened to the crossbeam ring of the bag frame using the groove 11 on the outer ring surface of rubber ring 20, with the seam 2 on the surface of rubber ring 20 positioned at the vertical post of the bag frame. In this way, bag body 1 and inward-folding interlayer bag 2 are stably fitted onto the frame, forming a complete double-layer structure.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bottom-closed double-layer bag structure, comprising a bag body (1), characterized in that: The top of the bag body (1) is integrally formed with an inward-folding interlayer bag (2), which extends out of the inside of the bag body (1). The bottom end of the inward-folding interlayer bag (2) is connected to the bottom plate of the bag body (1) through a limiting component. A rubber ring one (8) is fixed on the inner ring surface of the bag body (1), and a rubber ring two (10) is fitted and fixed on the outer ring surface of the inward-folding interlayer bag (2). Both the rubber ring one (8) and the rubber ring two (10) are fastened to the crossbeam ring of the bag frame.

2. The bottom-closed double-layer bag structure according to claim 1, characterized in that: The top of the bag body (1) is fixed with a rubber sleeve (3), which has a U-shaped ring plate structure. The inner ring plate of the rubber sleeve (3) is fixed to the outer ring surface of the inward-folding interlayer bag (2).

3. The bottom-closed double-layer bag structure according to claim 1, characterized in that: The limiting component includes a male Velcro ring (4), a connecting strip (5), and a female Velcro patch (6). The male Velcro ring (4) is fixed to the top surface of the bottom plate of the bag body (1). There are multiple connecting strips (5), and all of the multiple connecting strips (5) are fixed to the bottom end of the inward-folding interlayer bag (2). The female Velcro patch (6) corresponds to the connecting strip (5) one by one. The female Velcro patch (6) is fixed to the bottom surface of the connecting strip (5). The female Velcro patch (6) and the male Velcro ring (4) are connected together.

4. The bottom-closed double-layer bag structure according to claim 3, characterized in that: The connecting strip (5) has a traction strip (7) fixed at one end away from the inner folded interlayer bag (2), and the traction strip (7) is in the shape of a "U".

5. The bottom-closed double-layer bag structure according to claim 1, characterized in that: The inner ring surface of the rubber ring (8) is provided with a groove (9), which is an annular groove. After the bag body (1) is fitted onto the bag frame, the groove (9) is fastened to the crossbeam ring of the bag frame. The surface of the rubber ring (8) is provided with a slit, which is located at the vertical bar of the bag frame.

6. The bottom-closed double-layer bag structure according to claim 1, characterized in that: The outer ring surface of the rubber ring 2 (10) is provided with a slot 2 (11), which is an annular groove. After the inward-folded interlayer bag (2) is inserted into the bag frame, the slot 2 (11) is fastened to the crossbeam ring of the bag frame. The surface of the rubber ring 2 (10) is provided with a slit 2, which is located at the vertical rod of the bag frame.

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