Chemical woven bag

Abstract

The utility model discloses a chemical woven bag, including polypropylene woven bag and bag mouth locking portion: the bag mouth locking portion sets up at the top of polypropylene woven bag, and the bag mouth locking portion has the rotary rod of fusion connection in the top of polypropylene woven bag, and the rotary rod is provided with four, and four the rotary rod head -tail articulates and constitutes the annular support frame of unfolding. The utility model can form annular support frame through four rotary rods, forms stable circular opening structure when woven bag unfolds, makes the bag mouth of polypropylene woven bag keep open state, facilitates the dumping and filling of material, and the locking structure can ensure that the rotary rod keeps fixed angle after closing, prevents polypropylene woven bag from leaking, and through the elastic deformation of glue seal ring and the bag mouth of polypropylene woven bag, forms the close adhesion, can strengthen the sealing property of bag mouth and prevent material from leaking, can provide additional friction force and help fixed bag mouth position, and the opening edge of polypropylene woven bag is protected from wearing and tearing simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of chemical woven bags technology, specifically a chemical woven bag. Background Technology

[0002] Chemical woven bags are specialized plastic polypropylene woven bags used for packaging chemical products. They possess properties such as moisture resistance, corrosion resistance, and tensile strength, and are widely used in chemical, building materials, and agricultural industries. Chemical woven bags are typically made from polypropylene (PP) or polyethylene (PE) plastic granules through processes such as drawing, weaving, and coating. The interior consists of woven fabric interlaced with warp and weft threads, commonly featuring either a plain woven layer or a composite film layer (with a PE film lining), the latter offering superior moisture and leak-proof performance.

[0003] The existing polypropylene woven bags for chemical use have a simple bag opening structure, usually formed by sewing or heat sealing. They lack a stable material discharge guiding structure. Furthermore, the bag openings of existing polypropylene woven bags are usually opened manually. However, due to the softness of the polypropylene woven bag material and the lack of a rigid support structure, the bag opening is prone to automatically closing during automated filling or long-term tilting, requiring repeated adjustments and increasing the difficulty of operation. Utility Model Content

[0004] The purpose of this utility model is to provide a chemical woven bag to solve the problems mentioned in the background art. The bag opening structure of the existing chemical polypropylene woven bags is simple, usually formed by sewing or heat sealing, lacking a stable material discharge guiding structure. In addition, the bag opening of the existing polypropylene woven bags is usually opened manually. However, because the polypropylene woven bag material is soft and lacks a rigid support structure, the bag opening is prone to automatically closing during automated filling or long-term pouring, requiring repeated adjustments and increasing the difficulty of operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a chemical woven bag, comprising a polypropylene woven bag and a bag opening locking part:

[0006] The bag opening locking part is located on the top of the polypropylene woven bag. The bag opening locking part has four rotating rods that are fused to the top of the polypropylene woven bag. The four rotating rods are hinged end to end to form an expandable ring support frame. The top of the rotating rods is provided with a locking structure to fix the rotation angle of the four rotating rods.

[0007] By adopting the above technical solution, the ring support frame composed of four rotating rods can form a stable circular opening structure when unfolded, keeping the opening of the polypropylene woven bag open, which facilitates the pouring and filling of materials. At the same time, the locking structure can ensure that the rotating rods maintain a fixed angle after closing, preventing the polypropylene woven bag from leaking.

[0008] Preferably, the bag opening locking part also has a rotating groove a at one end of the rotating rod, and a rotating groove b at the end of the rotating rod away from the rotating groove a, wherein adjacent rotating rods are connected by a rotatable shaft through the nesting of the rotating groove a and the rotating groove b.

[0009] By adopting the above technical solution, a smooth hinge between the rotating rods can be achieved through the complementary design of rotating groove a and rotating groove b, so that the four rotating rods can be smoothly extended and retracted, while ensuring the mechanical strength and stability of the connection parts.

[0010] Preferably, the bag opening locking part also has a rubber sealing ring disposed on the inner wall of the four rotating rods, which forms an interference fit with the opening edge of the polypropylene woven bag body.

[0011] By adopting the above technical solution, the elastic deformation of the sealing ring can form a tight fit with the opening of the polypropylene woven bag, which can not only enhance the sealing of the bag opening to prevent material leakage, but also provide additional friction to help fix the position of the bag opening, while protecting the opening edge of the polypropylene woven bag from wear.

[0012] Preferably, the bag opening locking part also has a limiting frame disposed at the top of the rotating rod, a locking block is slidably disposed inside the limiting frame, and a sliding groove is opened inside the limiting frame, the locking block is embedded in the sliding groove and slidably connected with the limiting frame.

[0013] By adopting the above technical solution, the limit frame can provide a precise guide track for the locking block, ensuring that the locking block can move smoothly along the predetermined path and realize the reliable operation of the locking mechanism. At the same time, the slide structure can limit the range of motion of the locking block and prevent it from falling out.

[0014] Preferably, the bag opening locking part also has a spring disposed at one end of the locking block, the spring being located between the limiting frame and the locking block.

[0015] By adopting the above technical solution, the elastic force of the spring can provide an automatic reset function for the locking block, maintain continuous pressure on the locking block during use, and ensure the stability of the locked state.

[0016] Preferably, the bag opening locking part also has a locking bracket disposed on top of another rotating rod, through which the locking block passes and engages with the locking bracket.

[0017] By adopting the above technical solution, the locking and unlocking between the rotating rod can be achieved through the cooperation of the locking block and the locking frame. The specific shape design of the locking frame can ensure a firm mechanical interlock with the locking block and prevent accidental loosening.

[0018] Preferably, there are two card holders, and two sets of limiting frames and card blocks are also provided.

[0019] By adopting the above technical solution, the overall stability of the bag opening locking part can be significantly improved through the symmetrically arranged double-point locking structure, and the two locking frames and the corresponding limiting frames and locking block components can evenly distribute the force.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a bag opening locking part, a stable circular opening structure can be formed by the annular support frame composed of four rotating rods when unfolded, so that the bag opening of the polypropylene woven bag is kept open, which facilitates the pouring and filling of materials. At the same time, the locking structure can ensure that the rotating rods maintain a fixed angle after closing, preventing the polypropylene woven bag from leaking; and the elastic deformation of the rubber sealing ring forms a tight fit with the bag opening of the polypropylene woven bag, which can not only enhance the sealing of the bag opening to prevent material leakage, but also provide additional friction to help fix the position of the bag opening, while protecting the opening edge of the polypropylene woven bag from wear. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a schematic diagram of the overall polypropylene woven bag opening structure of this application;

[0023] Figure 3 This is a schematic diagram of the structure of the bag opening locking part in this application;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the limit frame in this application.

[0025] In the diagram: 1. Polypropylene woven bag; 2. Bag opening locking part; 201. Rotating rod; 202. Rotating groove a; 203. Rotating groove b; 204. Glue sealing ring; 205. Locking frame; 206. Limiting frame; 207. Locking block; 208. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: Please refer to Figure 1 , Figure 2 and Figure 3 This embodiment provides a technical solution: a chemical woven bag, comprising a polypropylene woven bag 1 and a bag opening locking part 2.

[0028] The bag opening locking part 2 is located on the top of the polypropylene woven bag 1. The bag opening locking part 2 has a rotating rod 201 fused to the top of the polypropylene woven bag 1. There are four rotating rods 201, which are hinged end to end to form an expandable annular support frame. The top of the rotating rod 201 is provided with a locking structure to fix the rotation angle of the four rotating rods 201. When the annular support frame formed by the four rotating rods 201 is expanded, a stable circular opening structure is formed, so that the bag opening of the polypropylene woven bag 1 is kept open, which is convenient for pouring and filling materials. At the same time, the locking structure can ensure that the rotating rod 201 maintains a fixed angle after closing, preventing the polypropylene woven bag 1 from leaking.

[0029] Example 2: Please refer to Figure 2 , Figure 3 and Figure 4 This embodiment provides a technical solution: a chemical woven bag, including a bag opening locking part 2, a rotating rod 201, and a locking block 207.

[0030] A rotating groove a202 is provided at one end of the rotating rod 201, and a rotating groove b203 is provided at the end of the rotating rod 201 away from the rotating groove a202. Adjacent rotating rods 201 are connected by a rotatable shaft through the nesting of rotating groove a202 and rotating groove b203. The complementary design of rotating groove a202 and rotating groove b203 can achieve a smooth hinge between the rotating rods 201, so that the four rotating rods 201 can be smoothly extended and retracted, while ensuring the mechanical strength and stability of the connection part.

[0031] A sealing ring 204 is embedded in the inner wall of the four rotating rods 201. The sealing ring 204 forms an interference fit with the opening edge of the polypropylene woven bag body 1. The elastic deformation of the sealing ring 204 can form a tight fit with the opening of the polypropylene woven bag 1, which can not only enhance the sealing of the bag opening to prevent material leakage, but also provide additional friction to help fix the position of the bag opening, while protecting the opening edge of the polypropylene woven bag 1 from wear.

[0032] A limiting frame 206 is fixedly installed at the top of the rotating rod 201. The fixing method is an existing detachable fixing, such as bolt connection. A locking block 207 is slidably installed inside the limiting frame 206. A sliding groove is opened inside the limiting frame 206. The locking block 207 is embedded in the sliding groove and slidably connected with the limiting frame 206. The limiting frame 206 can provide a precise guide track for the locking block 207, ensuring that the locking block 207 can move smoothly along the predetermined path, realizing the reliable operation of the locking mechanism. At the same time, the sliding groove structure can limit the range of motion of the locking block 207 and prevent it from falling out.

[0033] A spring 208 is provided at one end of the locking block 207. The spring 208 is in the open state when there is no external force. The locking block 207 and the limiting frame 206 both have grooves inside to limit the lateral movement of the spring 208. The spring 208 is located between the limiting frame 206 and the locking block 207. The elastic force of the spring 208 can provide the locking block 207 with an automatic reset function. During use, it maintains continuous pressure on the locking block 207 to ensure the stability of the locked state.

[0034] A locking bracket 205 is fixedly installed on the top of another rotating rod 201. The fixing method is an existing detachable fixing, such as bolt connection. The locking block 207 passes through the locking bracket 205 and engages with the locking bracket 205. The locking and unlocking between the rotating rod 201 can be achieved by the cooperation between the locking block 207 and the locking bracket 205. The specific shape design of the locking bracket 205 can ensure a firm mechanical interlock with the locking block 207 to prevent accidental loosening.

[0035] There are two locking frames 205, and two sets of limiting frames 206 and locking blocks 207 are also provided. The overall stability of the bag opening locking part 2 can be significantly improved by the symmetrically arranged double-point locking structure. The two locking frames 205 and the corresponding limiting frames 206 and locking blocks 207 components can evenly distribute the force.

[0036] Working principle: First, when opening the bag, the operator presses the two locking blocks 207 to move them against the elastic force of the springs 208, causing the springs 208 to contract and store force, thus unlocking the locking blocks 207 from the locking frame 205. This allows the four rotating rods 201 to unfold from the retracted state. Through the shaft connection structure between the rotating grooves a202 and b203, the rotating rods 201 gradually unfold to form a ring support frame. The ring support frame formed by the four rotating rods 201 can form a stable circular opening structure when unfolded, keeping the opening of the polypropylene woven bag 1 open, facilitating the pouring and filling of materials. The elastic deformation of the sealing ring 204 forms a tight fit with the opening of the polypropylene woven bag 1, which not only enhances the sealing of the bag opening to prevent material leakage, but also provides additional friction to help fix the position of the bag opening, while protecting the opening edge of the polypropylene woven bag 1 from wear.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0038] 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 chemical woven bag, characterized by, include: Polypropylene woven bags; The bag opening locking part is located on the top of the polypropylene woven bag. The bag opening locking part has four rotating rods fused to the top of the polypropylene woven bag. The four rotating rods are hinged end to end to form an expandable ring support frame. The top of the rotating rods is provided with a locking structure to fix the rotation angle of the four rotating rods.

2. The chemical woven bag according to claim 1, characterized in that: The bag opening locking part also has a rotating groove a at one end of the rotating rod, and a rotating groove b at the end of the rotating rod away from the rotating groove a. The adjacent rotating rods are connected by a rotatable shaft through the nesting of the rotating groove a and the rotating groove b.

3. A chemical woven bag according to claim 1, characterized in that: The bag opening locking part also has a rubber sealing ring set on the inner wall of the four rotating rods, which forms an interference fit with the opening edge of the polypropylene woven bag body.

4. A chemical woven bag according to claim 1, characterized in that: The bag opening locking part also has a limiting frame set at the top of the rotating rod. A locking block is slidably arranged inside the limiting frame. A sliding groove is opened inside the limiting frame. The locking block is embedded in the sliding groove and slidably connected to the limiting frame.

5. A chemical woven bag according to claim 4, characterized in that: The bag opening locking part also has a spring located at one end of the locking block, which is situated between the limit bracket and the locking block.

6. A chemical woven bag according to claim 4, characterized in that: The bag opening locking part also has a locking bracket located on top of another rotating rod, through which the locking block passes and engages with the locking bracket.

7. A chemical woven bag according to claim 6, characterized in that: There are two card holders, and two sets of limit holders and card blocks are also provided.

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