Container bag unloading structure

Abstract

The utility model relates to the technical field of flexible freight bags, in particular to a flexible freight bag unloading structure, a flexible freight bag comprises a bag body, the bottom of the bag body is provided with an unloading port, the flexible freight bag unloading structure comprises a shell, a plurality of pushing arms and a driving disc, the bag body is connected with the shell, a containing cavity is formed in the shell, the middle of the shell is provided with a round penetrating port sleeved with the unloading port, and the driving disc is arranged in the containing cavity. A containing cavity is formed in the shell, a penetrating opening is formed in the shell, an avoiding groove communicating with the containing cavity and the penetrating opening is formed in the shell, the multiple pushing arms are arranged in an array mode in the circumferential direction of the penetrating opening, the pushing arms are arranged on the shell in a sliding mode, limiting blocks are arranged at the ends, away from the penetrating opening, of the pushing arms, the driving disc is rotationally arranged in the containing cavity, and arc-shaped grooves matched with the limiting blocks are formed in the driving disc; when the driving disc rotates, the driving disc drives the pushing arms to move in the radial direction of the penetrating opening so that the pushing arms can get close to or get away from the discharging opening from the receding grooves. The size of the discharging opening of the flexible freight bag is adjusted in an indexing mode, and the flexibility and controllability of discharging operation can be improved.

Description

Technical Field

[0001] This utility model relates to the field of container bag technology, and more specifically, to a container bag unloading structure. Background Technology

[0002] FIBCs (Flexible Intermediate Bulk Containers) are flexible transport packaging containers used for transporting bulk, powdery, or granular materials. They are typically made of polyester fibers such as polypropylene and polyethylene and have advantages such as moisture resistance, dust resistance, radiation resistance, and robustness and safety. They are widely used in the food, grain, pharmaceutical, and chemical industries.

[0003] To facilitate unloading, FIBCs (Flexible Intermediate Bulk Containers) often have a discharge port at the bottom, which is usually kept closed by zippers, ropes, or other sealing devices to prevent leakage during transport. During unloading, the FIBC must first be securely suspended, and then the operator must unseal the discharge port to allow the material to flow out.

[0004] However, once the sealing device of the discharge port is released, the discharge port size is fixed, making it impossible to control the material discharge rate. It can only be adjusted with the help of auxiliary discharge equipment. Moreover, when a large amount of material is discharged, it is impossible to re-close the discharge port in time, which lacks flexibility. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a container bag unloading structure that improves the flexibility and controllability of the unloading operation by adjusting the size of the unloading port of the container bag in a graduated manner.

[0006] According to an embodiment of the present invention, a container bag unloading structure includes a bag body with a discharge port at the bottom. The unloading structure includes a housing, multiple push arms, and a drive disc. The bag body is connected to the housing, and the housing has a receiving cavity. The housing has a circular through-hole in the middle for which the discharge port is fitted. The housing has a clearance groove communicating with both the receiving cavity and the through-hole. The multiple push arms are arranged in a circumferential array along the through-hole and are slidably mounted on the housing. A limiting block is provided at the end of each push arm away from the through-hole. The drive disc is rotatably mounted in the receiving cavity and has an arc-shaped groove matching the limiting block. When the drive disc rotates, it drives the push arms to move radially along the through-hole to move closer to or away from the discharge port from the clearance groove.

[0007] According to some embodiments of the present invention, a plurality of the push arms are arranged in a uniform array along the circumference of the through opening.

[0008] According to some embodiments of this utility model, the container bag unloading structure further includes an indexing locking mechanism. The indexing locking mechanism includes a ratchet, a pawl, an elastic pressing member, and a locking pin. The ratchet is rotatably disposed within the receiving cavity and is connected to the drive disc. One end of the pawl is rotatably disposed within the receiving cavity, and the other end of the pawl is close to the outer circumferential surface of the ratchet. The elastic pressing member is disposed within the receiving cavity, with one end rotatably and elastically disposed on the housing, and the other end of the elastic pressing member pressing against the pawl to engage the ratchet and the pawl. The locking pin is threadedly connected between the housing and the elastic pressing member to prevent the elastic pressing member from rotating. When the drive disc drives the push arm away from the discharge port from the clearance groove, the rotation direction of the drive disc is opposite to the orientation of the ratchet.

[0009] According to some embodiments of the present invention, the elastic pressing member includes a rotating shaft, a rotating arm, and a torsion spring. The rotating shaft is disposed on the housing, one end of the rotating arm is rotatably disposed on the rotating shaft, and the torsion spring is disposed between the rotating shaft and the rotating arm.

[0010] According to some embodiments of the present invention, the outer peripheral surface of the drive disc is provided with meshing teeth, and the ratchet is meshed with the meshing teeth through a gear set.

[0011] According to some embodiments of the present invention, the end of the pawl away from the ratchet is provided with a pressing part.

[0012] According to some embodiments of the present invention, the housing is provided with a first clearance hole communicating with the accommodating cavity, and the position of the first clearance hole corresponds to that of the pressing part.

[0013] According to some embodiments of the present invention, an elastic element is provided between the push arm and the drive disc, and the elastic element is used to provide a pulling force to prevent the push arm from moving away from the discharge port.

[0014] According to some embodiments of the present invention, the ratchet has a locking groove at its center.

[0015] According to some embodiments of the present invention, the housing is provided with a second clearance hole communicating with the accommodating cavity, and the clearance hole corresponds to the position of the snap-fit ​​groove.

[0016] According to an embodiment of the present utility model, a container bag unloading structure has at least the following beneficial effects: by rotating the drive disc to change the size of the area enclosed by the push arm, the size of the through opening can be changed, thereby adjusting the size of the unloading port. This can effectively control the material discharge speed, and at the same time, the unloading port can be promptly re-closed when the material is discharged. Attached Figure Description

[0017] Figure 1 This is an assembly diagram of the container bag unloading structure in one embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the shell in one embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the external structure of the shell in one embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the indexing locking mechanism in one embodiment of the present utility model;

[0021] In the picture:

[0022] Bag body 100, discharge port 120, shell 200, through port 220, clearance groove 230, first clearance hole 240, second clearance hole 250, push arm 300, limit block 310, drive disc 400, arc groove 410, meshing tooth 420, indexing locking mechanism 500, ratchet 510, snap groove 511, pawl 520, pressing part 521, elastic pressing part 530, rotating shaft 531, rotating arm 532, torsion spring 533, locking pin 540, elastic element 600. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Reference Figures 1 to 4 As shown, this utility model discloses a container bag unloading structure. The container bag includes a bag body 100, and the bottom of the bag body 100 is provided with a discharge port 120. The container bag unloading structure includes a shell 200, multiple push arms 300, and a drive disc 400.

[0028] The bag body 100 and the shell 200 are connected together by fasteners. The shell 200 has a receiving cavity (not shown in the figure). The middle of the shell 200 has a through-hole 220 for the unloading port 120. The cross-section of the through-hole 220 is circular. The shell 200 has a relief groove 230 that communicates with both the receiving cavity and the through-hole 220. The relief groove 230 is arranged circumferentially through the through-hole 220.

[0029] Multiple push arms 300 are arranged in a circumferential array along the through opening 220. The push arms 300 are slidably disposed on the housing 200. For example, a sliding groove can be provided on the housing 200, and the push arms 300 slide in the sliding groove. At the same time, the push arms 300 do not disengage from the sliding groove during the sliding process.

[0030] The push arm 300 has a limiting block 310 at the end away from the through opening 220. The drive disk 400 is rotatably disposed in the receiving cavity, and the drive disk 400 has an arc-shaped groove 410 that matches the limiting block 310. In actual use, the drive disk 400 is first rotated, and the arc-shaped groove 410 on the drive disk 400 also rotates. Under the limiting action of the arc-shaped groove 410 on the limiting block 310, the push arm 300 is driven to move radially along the through opening 220 on the housing 200, so that the push arm 300 passes through the clearance groove 230 and gradually approaches the discharge port 120, or passes through the clearance groove 230 and gradually moves away from the discharge port 120.

[0031] In this embodiment, the size of the area enclosed by the push arm 300 is changed by rotating the drive disc 400, thereby changing the size of the through opening 220 and adjusting the opening size of the discharge port 120. When transporting the container bag, the discharge port 120 can be secured with a rope. When unloading the container bag, it is first suspended to a certain height, then the through opening 220 is adjusted to the required size, and finally the rope on the discharge port 120 is released.

[0032] In some embodiments of this utility model, in order to make the opening size of the discharge port 120 uniformly adjusted, multiple push arms 300 are arranged in a uniform array along the circumference of the through port 220.

[0033] Because the container bag is filled with a large amount of material, when the discharge port 120 is opened, this material will exert a large compressive force on the bag body 100 inside the through-hole 220. This may cause the push arm 300 to pass through the clearance groove 230 and gradually move away from the discharge port 120, resulting in the discharge port 120 losing its adjustable opening size. Therefore, in some embodiments of this utility model, such as... Figure 4 As shown, the container bag unloading structure also includes an indexing locking mechanism 500. The indexing locking mechanism 500 can gradually adjust the opening size of the unloading port 120 and keep the opening of the unloading port 120 at a preset size.

[0034] Specifically, the indexing locking mechanism 500 includes a ratchet 510, a pawl 520, an elastic pressing member 530, and a locking pin 540. The ratchet 520 is rotatably disposed in the receiving cavity and is connected to the drive disk 400. One end of the pawl 520 is rotatably disposed in the receiving cavity, and the other end of the pawl 520 is close to the outer peripheral surface of the ratchet 520. The elastic pressing member 530 is disposed in the receiving cavity. One end of the elastic pressing member 530 is elastically rotatably disposed on the housing 200, and the other end of the elastic pressing member 530 abuts against the pawl 520 so that the ratchet 510 and the pawl 520 mesh. The locking pin 540 is threadedly connected between the housing 200 and the elastic pressing member 530 to prevent the elastic pressing member 530 from rotating. Specifically, when the drive disc 400 drives the push arm 300 away from the discharge port 120 from the clearance groove 230, the rotation direction of the drive disc 400 is opposite to the orientation of the ratchet 520. It should be noted that the orientation of the ratchet 520 refers to the direction of the ratchet teeth at the circumferential edge of the ratchet 520.

[0035] In this embodiment, when the size of the through opening 220 is increased by rotating the drive disk 400, since the rotation direction of the drive disk 400 is opposite to the orientation of the ratchet 520, when the drive disk 400 rotates a certain angle and stops rotating, the force is maintained on the drive disk 400. At this time, the elastic pressing member 530 is fixed to the housing 200 by the locking pin 540, and the ratchet 510 and the pawl 520 will always remain engaged. After the force is stopped on the drive disk 400, under the cooperation of the ratchet 510 and the pawl 520, the drive disk 400 cannot rotate in the forward or reverse direction under the extrusion force applied by the material.

[0036] When the size of the through opening 220 is reduced by rotating the drive disc 400, the locking pin 540 is removed. Since the rotation direction of the drive disc 400 is the same as the orientation of the ratchet 520, and one end of the elastic pressing member 530 presses against the pawl 520, the pawl 520 blocks the rotation of the drive disc 400. To continue rotating the drive disc 400, the elastic pressing member 530 can be rotated so that it is no longer pressing against the pawl 520.

[0037] It should be noted that, in order to facilitate the installation of the locking pin 540 on the outside of the housing 200, an clearance opening can be provided at the corresponding position of the housing 200.

[0038] In some embodiments of this utility model, such as Figure 4 As shown, the elastic pressing member 530 includes a rotating shaft 531, a rotating arm 532, and a torsion spring 533. The rotating shaft 531 is mounted on the housing 200, one end of the rotating arm 532 is rotatably mounted on the rotating shaft 531, and the torsion spring 533 is located between the rotating shaft 531 and the rotating arm 532. In this embodiment, the torsion spring 533 can drive the rotating arm 532, which is rotatably connected to the rotating shaft 531, to rotate towards the pawl 520 side.

[0039] In some embodiments of this utility model, such as Figure 2 As shown, the outer circumferential surface of the drive disk 400 is provided with meshing teeth 420, and the ratchet 410 is meshed with the meshing teeth 420 through a gear set (not shown in the figure), which can improve the transmission efficiency between the drive disk 400 and the ratchet 410.

[0040] When the size of the through opening 220 is reduced by rotating the drive disc 400, in order to continue rotating the drive disc 400, it is necessary to rotate the elastic pressing member 530 so that the elastic pressing member 530 does not press against the pawl 520. To facilitate the rotation of the elastic pressing member 530, in some embodiments of this utility model, such as Figure 4 As shown, the end of the pawl 520 away from the ratchet 520 is provided with a pressing part 521. In addition, the pressing part 521 is located inside the receiving cavity, which can prevent accidental contact.

[0041] In this embodiment, by pressing the pressing part 521, the other end of the pawl 520 can be lifted up and disengaged from the ratchet teeth on the ratchet 510, thereby causing the elastic pressing member 530 to rotate in the opposite direction.

[0042] To facilitate pressing the pressing part 521 inside the receiving cavity from outside the housing 200, in some embodiments of this utility model, such as Figure 3 As shown, the housing 200 is provided with a first clearance hole 240 that communicates with the accommodating cavity. The first clearance hole 240 corresponds to the position of the pressing part 521, for example, vertically.

[0043] In some embodiments of this utility model, such as Figure 2 As shown, an elastic element 600 is provided between the push arm 300 and the drive disk 400. When the size of the through opening 220 is increased by rotating the drive disk 400, the elastic element 600 provides a pulling force to prevent the drive disk 400 from continuing to rotate, thus offsetting some of the extrusion pressure exerted by the material. Simultaneously, when the size of the through opening 220 is decreased by rotating the drive disk 400, it assists in the rotation of the drive disk 400.

[0044] In some embodiments of this utility model, such as Figure 4 As shown, the ratchet 510 has a locking groove 511 at its center, which allows the external handle (not shown in the figure) to be easily inserted into the locking groove 511, and the drive disk 400 to be indirectly rotated by rotating the handle.

[0045] To facilitate inserting the handle into the latching groove 511 inside the receiving cavity from outside the housing 200, in some embodiments of this utility model, such as Figure 3 As shown, the housing 200 is provided with a second clearance hole 250 that communicates with the accommodating cavity. The clearance hole 250 corresponds to the position of the snap-fit ​​groove 511, for example, vertically.

[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A container bag unloading structure, wherein the container bag includes a bag body, and the bottom of the bag body is provided with a unloading port, characterized in that, The container bag unloading structure includes: The housing includes a bag body connected to the housing, a receiving cavity inside the housing, a circular through-hole in the middle of the housing for the discharge port, and a clearance groove on the housing that communicates with both the receiving cavity and the through-hole. Multiple push arms are arranged in a circumferential array along the through opening, and the push arms are slidably disposed on the housing. A limiting block is provided at the end of the push arm away from the through opening. A drive disk is rotatably disposed within the accommodating cavity, and the drive disk is provided with an arc-shaped groove that matches the limiting block; When the drive disc rotates, it drives the push arm to move radially along the through opening, so as to move closer to or away from the discharge port from the clearance groove.

2. The container bag unloading structure according to claim 1, characterized in that, The plurality of push arms are arranged in a uniform array along the circumference of the through opening.

3. The container bag unloading structure according to claim 1 or 2, characterized in that, The container bag unloading structure further includes an indexing locking mechanism, which comprises: A ratchet is rotatably disposed within the accommodating cavity and is connected to the drive disc for transmission. A pawl, one end of which is rotatably disposed within the receiving cavity, and the other end of which is close to the outer peripheral surface of the ratchet; An elastic pressing member is disposed in the accommodating cavity. One end of the elastic pressing member is elastically rotatably mounted on the housing, and the other end of the elastic pressing member abuts against the pawl so that the ratchet engages with the pawl. A locking pin, threadedly connected between the housing and the elastic pressing member, prevents the elastic pressing member from rotating; When the drive disc drives the push arm away from the discharge port from the clearance groove, the rotation direction of the drive disc is opposite to the orientation of the ratchet.

4. The container bag unloading structure according to claim 3, characterized in that, The elastic pressing element includes: A rotating shaft is mounted on the housing. A rotating arm, one end of which is rotatably mounted on the rotating shaft; A torsion spring is disposed between the rotating shaft and the rotating arm.

5. The container bag unloading structure according to claim 3, characterized in that, The outer circumferential surface of the drive disc is provided with meshing teeth, and the ratchet is connected to the meshing teeth through a gear set.

6. The container bag unloading structure according to claim 3, characterized in that, The pawl is provided with a pressing part at the end away from the ratchet.

7. The container bag unloading structure according to claim 6, characterized in that, The housing is provided with a first clearance hole that communicates with the accommodating cavity, and the first clearance hole corresponds to the position of the pressing part.

8. The container bag unloading structure according to claim 7, characterized in that, An elastic element is provided between the push arm and the drive disc, and the elastic element is used to provide a pulling force to prevent the push arm from moving away from the discharge port.

9. The container bag unloading structure according to claim 3, characterized in that, The ratchet has a locking groove at its center.

10. The container bag unloading structure according to claim 9, characterized in that, The housing is provided with a second clearance hole that communicates with the accommodating cavity, and the clearance hole corresponds to the position of the snap-fit ​​groove.

Images