Molten aluminum transfer ladle with auxiliary opening and closing function

Abstract

The utility model discloses a molten aluminum transfer ladle with an auxiliary opening and closing function, an auxiliary opening and closing device comprises a fixed seat fixed on a small ladle cover, a spring is arranged in a cavity of the fixed seat, an adjusting assembly is arranged in the spring, a baffle is arranged on the adjusting assembly, the spring is located between the baffle and the bottom wall of the cavity, and a connecting rod mechanism is hinged to one end of the adjusting assembly. An avoiding opening is formed in the bottom wall of the cavity, the adjusting assembly comprises a pull rod, a sleeve, a swing assembly and an end cover assembly, one end of the pull rod is in threaded connection with a middle shaft hole of the sleeve, and one end of the sleeve is fixedly connected with one end of the swing assembly; the other end of the swing assembly is fixedly connected with the end cover assembly which is rotationally connected with the fixing base. A shielding assembly is arranged on the inner wall of the receding opening. The molten aluminum transfer ladle with the auxiliary opening and closing function can effectively prevent splashing molten aluminum and dust in a workshop from causing adverse effects on the auxiliary opening and closing device, and the initial compression length of the spring is convenient to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum liquid transfer bags, in particular to an aluminum liquid transfer bag with auxiliary opening and closing functions. Background Art

[0002] Aluminum ladles are one of the primary devices used for transferring molten aluminum. Existing ladles consist of a small lid, a large lid, and a ladle body. The large lid is integrally connected to the ladle body, while the small lid is hingedly attached to the large lid, allowing it to be opened and closed. Typically, to ensure the safety and thermal insulation of the ladles, the small lid is very heavy. This makes opening the small lid laborious and the closing force severe, potentially damaging both the large and small lids.

[0003] The patent with announcement number CN204711176U discloses an auxiliary opening and closing device for the lid of an aluminum ladle. When the lid is closed, as the rotation angle of the lid becomes smaller and smaller, the force arm of gravity on the lid becomes larger and larger, and the torque required to balance the gravity moment becomes larger. As the lid is gradually closed, the support rod pulls the push rod to rotate in the opposite direction of the lid closing, and then pulls the hinge plate to rotate in the opposite direction through the connecting plate, and then compresses the spring through the pull rod and the baffle. As the lid is closed, the push rod rotates in the opposite direction to the maximum angle, the pull rod compresses the spring to the maximum position, the spring reset force is maximum, and the spring The balancing torque on the small bag cover is also the largest. When the small bag cover is opened, the torque generated by the restoring force of the spring overcomes the torque generated by the gravity of the small bag cover, so that the bag cover can be balanced at any angle. The small bag cover can be opened with only a small amount of manpower, so it has an assisting effect. The spring is gradually compressed when closing, so it has a buffering function; by adjusting the position of the nut, the position of the baffle can be changed, thereby adjusting the initial compression length of the spring, and also changing the size of the balancing torque of the spring on the small bag cover, so that the balancing torque of the spring is equal to the size of the gravity torque of the small bag cover.

[0004] The above patent solves the defect that the small bag cover is very heavy, which makes it not only laborious to open the small bag cover, but also has a large impact force when closing, causing damage to the bag body. However, the inventor found that when molten aluminum is filled into the molten aluminum bag or poured out of the molten aluminum bag, the molten aluminum sometimes splashes onto the thread of the pull rod and solidifies, and there is a lot of dust in the molten aluminum manufacturing workshop and the casting workshop, and the dust will fall on the thread of the pull rod; the above situations will cause the nut to be unable to be tightened or to be very laborious to tighten the nut, resulting in the staff being unable to smoothly adjust the initial compression length of the spring; and in actual application, in order to prevent the nut from loosening, an anti-loosening nut is usually set on its outside, and the nut and the anti-loosening nut are both located in the cavity of the fixed seat, which means that before adjusting the nut, the anti-loosening nut needs to be unscrewed before the nut can be tightened, which makes it very inconvenient to adjust the initial compression length of the spring.

[0005] Therefore, it is necessary to develop an aluminum liquid transfer bag with auxiliary opening and closing functions to address the above defects. Utility Model Content

[0006] The purpose of the utility model is to provide an aluminum liquid transfer bag with an auxiliary opening and closing function to solve the above-mentioned technical problems, namely, it can effectively prevent the splashing aluminum liquid and dust in the workshop from causing adverse effects on the auxiliary opening and closing device, and facilitate the adjustment of the initial compression length of the spring.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The utility model discloses an aluminum liquid transfer bag with an auxiliary opening and closing function, comprising an aluminum liquid bag main body and an auxiliary opening and closing device installed on the aluminum liquid bag main body, the auxiliary opening and closing device comprises a fixing seat, the fixing seat is fixed on the small bag cover of the aluminum liquid bag main body, the front end of the fixing seat is provided with a cavity, a spring is provided in the cavity, an adjusting component is provided in the spring, and both ends of the adjusting component protrude outside the spring, a baffle is provided on the adjusting component that slides back and forth along the cavity, the spring is located between the baffle and the bottom wall of the cavity, and the end of the adjusting component away from the baffle protrudes out of the cavity. The bottom wall of the cavity is hinged with a connecting rod mechanism, the end of the connecting rod mechanism is hinged to the large bag cover of the aluminum liquid bag body, and a avoidance opening for avoiding the adjustment component is opened on the bottom wall of the cavity. The size of the spring compressed by the baffle is inversely proportional to the opening angle of the small bag cover. The adjustment component includes a pull rod, a sleeve, a swing assembly and an end cover assembly. One end of the pull rod is hinged to the connecting rod mechanism, and the other end of the pull rod is threadedly connected to the central axis hole of the sleeve. The end of the sleeve away from the pull rod passes through the baffle and is fixedly connected to one end of the swing assembly, and the pull rod is fixedly connected to the baffle.

[0009] The other end of the swing assembly is fixedly connected to the end cover assembly, the end cover assembly is correspondingly arranged at the end of the cavity away from the connecting rod mechanism and covers the cavity, and the end cover assembly is rotatably connected to the fixing seat;

[0010] A flexible shielding component is provided on the inner wall of the avoidance opening, and the shielding component is arranged in contact with the pull rod.

[0011] Preferably, the end cover assembly includes a circular cover and a limiting assembly, a first flange is provided on one side of the circular cover, and a second flange folded outward is provided on the end of the cavity away from the connecting rod mechanism, the circular cover has a side of the first flange that is in rotational contact with the end face of the second flange, the circumferential inner wall of the first flange is in rotational contact with the circumferential side wall of the second flange, and the limiting assembly is arranged between the first flange and the second flange and can prevent the first flange and the second flange from moving away from each other.

[0012] Preferably, the limiting assembly includes a rotating ring and a bolt, at least two threaded through holes are opened on the first flange, the bolt and the threaded through holes are arranged in a one-to-one correspondence, the bolt is threadedly connected to the threaded through holes, the end of the bolt abuts the fixing seat, the rotating ring is located between the first flange and the fixing seat, and the rotating ring is in rolling contact with the side of the second flange away from the round cover, the rotating ring is rotatably sleeved on the end of the bolt, and there is a gap of three to ten centimeters between the nut of the bolt and the first flange.

[0013] Preferably, the shielding component includes bristles, which are arranged in two rows and each row has a plurality of bristles. The bristles are arranged horizontally, one end of the bristles is fixedly connected to the circumferential inner wall of the avoidance opening, and the opposite ends of the two rows of bristles are arranged in contact, and the bristles are made of flexible material.

[0014] Preferably, the swing assembly includes a joint component and a telescopic rod mechanism, and there are two joint components, one of which is fixedly connected to the end cover assembly, and the other is fixedly connected to the sleeve, and the free ends of the two joint components have the freedom to swing up and down, and the telescopic rod mechanism is fixed between the two joint components.

[0015] Preferably, the telescopic rod mechanism includes a swing tube and a swing rod, one end of the swing tube is fixedly connected to the free end of any one of the joint components, one end of the swing rod is fixedly connected to the free end of another joint component, and the other end of the swing rod is slidably connected to the central axis hole of the swing tube, a key slot is provided on the swing rod, and a sliding key that slides in cooperation with the key slot is fixed in the central axis hole of the swing tube.

[0016] Preferably, the joint component is a universal joint.

[0017] Preferably, the joint component is a fisheye bearing.

[0018] Preferably, a locking block is further included, wherein the locking block is threadedly connected to the bolt and contacts the circumferential side wall of the first flange.

[0019] Preferably, it further comprises a limiting rod, which is fixed to one side of the arm plate of the small bag cover for hinged connection with the large bag cover.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are:

[0021] The utility model discloses an aluminum liquid transfer bag with an auxiliary opening and closing function. The end cover assembly and the shielding assembly are arranged to cover both ends of the cavity, thereby preventing splashing aluminum liquid and dust from entering the cavity, thereby effectively avoiding the adverse effects of aluminum liquid and dust on the auxiliary opening and closing device.

[0022] When the end cover assembly rotates, it drives the swing assembly to rotate, and the swing assembly drives the sleeve to rotate, so the sleeve rotates relative to the pull rod, and because the sleeve and the pull rod are threadedly connected, the length of the pull rod entering the central axis hole of the sleeve is adjustable, so the sleeve can move away from or close to the bottom wall of the cavity, and the baffle moves synchronously with the sleeve, so the distance between the baffle and the bottom wall of the cavity is adjustable, and the initial compression length of the spring is adjustable, and the adjustment process is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0025] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0026] Figure 3 for Figure 2 A in the middle is an enlarged structural diagram;

[0027] Figure 4 for Figure 3 Enlarged structural diagram at point B in the middle.

[0028] Explanation of the accompanying reference numerals: 1. Aluminum liquid ladle body; 101. Small ladle cover; 102. Large ladle cover; 103. Support arm plate; 104. Hinge support; 2. Fixed seat; 201. Second flange; 3. Spring; 4. Baffle; 5. Pull rod; 6. Sleeve; 7. Rotating ring; 8. Bolt; 9. Brush; 10. Universal joint; 11. Swing tube; 1101. Sliding key; 12. Swing rod; 1201. Keyway; 13. Round cover; 1301. First flange; 14. Locking block; 15. Limit rod; 16. Hinge plate; 17. Connecting plate; 18. Push rod; 19. Support rod. DETAILED DESCRIPTION

[0029] The core of the utility model is to provide an aluminum liquid transfer bag with auxiliary opening and closing function to solve the above technical problems, that is, it can effectively prevent the splashing aluminum liquid and dust in the workshop from causing adverse effects on the auxiliary opening and closing device, and facilitate the adjustment of the initial compression length of the spring.

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0032] In a specific embodiment of the present invention, Figures 1 to 4 As shown, it includes an aluminum liquid ladle body 1 and an auxiliary opening and closing device installed on the aluminum liquid ladle body 1, the auxiliary opening and closing device includes a fixing seat 2, the fixing seat 2 is fixed on the small bag cover 101 of the aluminum liquid ladle body 1, a cavity is provided at the front end of the fixing seat 2, a spring 3 is provided in the cavity, an adjustment component is provided in the spring 3, and both ends of the adjustment component protrude out of the spring 3, a baffle 4 is provided on the adjustment component that slides back and forth along the cavity, the spring 3 is located between the baffle 4 and the bottom wall of the cavity, one end of the adjustment component away from the baffle 4 protrudes out of the bottom wall of the cavity and is hinged to a connecting rod mechanism, the end of the connecting rod mechanism is hinged to the large bag cover 102 of the aluminum liquid ladle body 1, and an avoidance opening for avoiding the adjustment component is opened on the bottom wall of the cavity. The size of the spring 3 compressed by the baffle 4 is inversely proportional to the opening angle of the small bag cover 101;

[0033] The adjustment assembly includes a pull rod 5, a sleeve 6, a swing assembly and an end cover assembly. One end of the pull rod 5 is hinged to the connecting rod mechanism, and the other end of the pull rod 5 is threadedly connected to the central axis hole of the sleeve 6. The end of the sleeve 6 away from the pull rod 5 passes through the baffle 4 and is fixedly connected to one end of the swing assembly, and the pull rod 5 is fixedly connected to the baffle 4.

[0034] The other end of the swing assembly is fixedly connected to the end cover assembly, the end cover assembly is correspondingly arranged at the end of the cavity away from the connecting rod mechanism and covers the cavity, and the end cover assembly is rotatably connected to the fixed seat 2;

[0035] A flexible shielding component is provided on the inner wall of the avoidance opening, and the shielding component is arranged in contact with the pull rod 5.

[0036] Specifically, the end cover assembly and the shielding assembly can cover both ends of the cavity, thereby preventing splashing molten aluminum and dust from entering the cavity, thereby effectively avoiding the adverse effects of molten aluminum and dust on the auxiliary opening and closing device.

[0037] When the end cover assembly rotates, it drives the swing assembly to rotate, and the swing assembly drives the sleeve 6 to rotate, so that the sleeve 6 rotates relative to the pull rod 5, and because the sleeve 6 and the pull rod 5 are threadedly connected, the length of the pull rod 5 entering the central axis hole of the sleeve 6 is adjustable, so the sleeve 6 can move away from or close to the bottom wall of the cavity, and the baffle 4 moves synchronously with the sleeve 6, so the distance between the baffle 4 and the bottom wall of the cavity is adjustable, and the initial compression length of the spring 3 is adjustable, and the adjustment process is simple and convenient.

[0038] The connecting rod mechanism belongs to the existing technology, which is the same as the connecting rod mechanism disclosed in the patent with announcement number CN204711176U, that is: the connecting rod mechanism includes a hinge plate 16, a connecting plate 17, a push rod 18 and a support rod 19, the bottom of the hinge plate 16 is hinged to the fixed seat 2, the front upper part of the hinge plate 16 is hinged to the end of the pull rod 5, the upper right part of the hinge plate 16 is hinged to one end of the connecting plate 17, the front end of the push rod 18 is hinged to the fixed seat 2, the end of the push rod 18 is hinged to the front end of the support rod 19, the other end of the connecting plate 17 is hinged to the middle part of the push rod 18, and the end of the support rod 19 is hinged to the large bag cover 102, and the hinge between the support rod 19 and the large bag cover 102 is located behind the hinge between the small bag cover 101 and the large bag cover 102.

[0039] In some embodiments, the end cover assembly includes a circular cover 13 and a limiting assembly, a first flange 1301 is provided on one side of the circular cover 13, and a second flange 201 folded outward is provided on the end of the cavity away from the connecting rod mechanism. The circular cover 13 has a first flange 1301 on one side that is in rotational contact with the end face of the second flange 201, and the circumferential inner wall of the first flange 1301 is in rotational contact with the circumferential side wall of the second flange 201. The limiting assembly is arranged between the first flange 1301 and the second flange 201 and can prevent the first flange 1301 and the second flange 201 from moving away from each other.

[0040] Specifically, the arrangement of the round cover 13 can shield one end of the cavity, thereby preventing splashing aluminum liquid and dust from entering the cavity.

[0041] In some embodiments, the limiting assembly includes a rotating ring 7 and a bolt 8, at least two threaded through holes are opened on the first flange 1301, the bolt 8 is arranged in a one-to-one correspondence with the threaded through holes, the bolt 8 is threadedly connected to the threaded through holes, the end of the bolt 8 is in contact with the fixing seat 2, the rotating ring 7 is located between the first flange 1301 and the fixing seat 2, and the rotating ring 7 is in rolling contact with the side of the second flange 201 away from the round cover 13, the rotating ring 7 is rotatably sleeved on the end of the bolt 8, and there is a gap of three to ten centimeters between the nut of the bolt 8 and the first flange 1301.

[0042] Specifically, loosening bolt 8 allows circular cover 13 to rotate, driving the swing assembly in turn. A worker can either directly rotate circular cover 13 or grasp bolt 8 with both hands and rotate it. Bolt 8 then drives first flange 1301, which in turn drives circular cover 13 in turn. The provision of rotating ring 7 prevents first flange 1301 and second flange 201 from moving away from each other.

[0043] In some embodiments, the shielding component includes bristles 9, which are arranged in two rows and each row has multiple bristles 9. The bristles 9 are arranged horizontally, one end of the bristles 9 is fixedly connected to the circumferential inner wall of the avoidance opening, and the opposite ends of the two rows of bristles 9 are in contact with each other. The bristles 9 are made of flexible material.

[0044] Specifically, the bristles 9 can block the escape opening, thereby preventing splashing aluminum liquid and dust from entering the cavity. The bristles 9 can be made of, but not limited to, toothbrush bristles, shoe brush bristles, animal hair, etc.

[0045] In some embodiments, the swing assembly includes a joint component and a telescopic rod mechanism. There are two joint components, one joint component is fixedly connected to the end cover assembly, and the other joint component is fixedly connected to the sleeve 6. The free ends of the two joint components have the freedom to swing up and down, and the telescopic rod mechanism is fixed between the two joint components.

[0046] Specifically, when the auxiliary opening and closing device is in operation, the hinge plate 16 will swing, and the sleeve 6 and the pull rod 5 will swing up and down, and the sleeve 6 and the pull rod 5 will move left and right in the cavity. The setting of the joint component can ensure that the sleeve 6 and the pull rod 5 can swing up and down normally, and the setting of the telescopic rod mechanism can ensure that the sleeve 6 and the pull rod 5 can move left and right normally.

[0047] In some embodiments, the telescopic rod mechanism includes a swing tube 11 and a swing rod 12, one end of the swing tube 11 is fixedly connected to the free end of any joint component, one end of the swing rod 12 is fixedly connected to the free end of another joint component, and the other end of the swing rod 12 is slidingly connected to the central axis hole of the swing tube 11, a key slot 1201 is provided on the swing rod 12, and a sliding key 1101 that slides with the key slot 1201 is fixed in the central axis hole of the swing tube 11.

[0048] Specifically, Figure 3 For example, when the round cover 13 rotates, the universal joint 10 connected to it is driven to rotate, and the universal joint 10 drives the swing tube 11 to rotate. The arrangement of the sliding key 1101 and the keyway 1201 enables the swing tube 11 to drive the swing rod 12 to rotate, and the swing rod 12 drives the universal joint 10 on the sleeve 6 to rotate, and then the sleeve 6 rotates.

[0049] In some embodiments, the joint component may be, but is not limited to, the following components: a universal joint 10 , a fisheye bearing, or a universal ball joint.

[0050] In some embodiments, a locking block 14 is further included. The locking block 14 is threadedly connected to the bolt 8 , and the locking block 14 contacts the circumferential side wall of the first flange 1301 .

[0051] Specifically, the locking block 14 is mainly used to prevent the bolt 8 from loosening.

[0052] In some embodiments, a limiting rod 15 is further included, which is fixed to one side of the arm plate 103 for hinged connection between the small bag cover 101 and the large bag cover 102 .

[0053] Specifically, the limiting rod 15 is configured to limit the maximum opening angle of the small bag cover 101. Specifically, as the opening angle of the small bag cover 101 gradually increases, the limiting rod 15 contacts the hinge support 104 on the large bag cover 102, thereby limiting the maximum opening angle of the small bag cover 101. In practical applications, the limiting rod 15 can be welded to the support arm plate 103, or multiple through-holes can be provided in the support arm plate 103, with the limiting rod 15 plugged into the through-holes. The provision of multiple through-holes allows staff to flexibly adjust the maximum opening angle of the small bag cover 101 as needed.

[0054] The working principle of the aluminum liquid transfer bag with auxiliary opening and closing function of the utility model is: the setting of the round cover 13 can block one end of the cavity, and the setting of the bristles 9 can block the avoidance opening, thereby preventing splashing aluminum liquid and dust from entering the cavity, thereby effectively avoiding the adverse effects of aluminum liquid and dust on the auxiliary opening and closing device.

[0055] Loosen the bolt 8, and the first flange 1301 can be driven to rotate by the setting of the bolt 8, and the first flange 1301 drives the round cover 13 to rotate. Figure 3 For example, when the round cover 13 rotates, the universal joint 10 connected to it is driven to rotate, and the universal joint 10 drives the swing tube 11 to rotate. The arrangement of the sliding key 1101 and the keyway 1201 enables the swing tube 11 to drive the swing rod 12 to rotate, and the swing rod 12 drives the universal joint 10 on the sleeve 6 to rotate, and the sleeve 6 rotates, and the sleeve 6 rotates relative to the pull rod 5. Because the sleeve 6 and the pull rod 5 are threadedly connected, the length of the pull rod 5 entering the central axis hole of the sleeve 6 is adjustable, and the sleeve 6 can move away from or close to the bottom wall of the cavity. The baffle 4 moves synchronously with the sleeve 6, and the distance between the baffle 4 and the bottom wall of the cavity is adjustable, and the initial compression length of the spring 3 is adjustable.

[0056] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. Similar parts between the various embodiments can be referred to in conjunction with each other, and the various embodiments can be combined with each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For relevant parts, refer to the method description.

[0057] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A molten aluminum transfer bag with an auxiliary opening and closing function, comprising an aluminum molten bag body (1) and an auxiliary opening and closing device installed on the aluminum molten bag body (1), wherein the auxiliary opening and closing device comprises a fixing seat (2), wherein the fixing seat (2) is fixed on a small bag cover (101) of the aluminum molten bag body (1), wherein a cavity is provided at the front end of the fixing seat (2), wherein a spring (3) is provided in the cavity, wherein an adjusting component is provided in the spring (3), and both ends of the adjusting component protrude outside the spring (3), wherein the adjusting component is provided with a spring (3) along the cavity. The baffle (4) slides back and forth in the cavity, the spring (3) is located between the baffle (4) and the bottom wall of the cavity, the end of the adjustment component away from the baffle (4) protrudes from the bottom wall of the cavity and is hinged with a connecting rod mechanism, the end of the connecting rod mechanism is hinged with the large bag cover (102) of the aluminum liquid bag body (1), and a evacuation port for evading the adjustment component is opened on the bottom wall of the cavity, the size of the spring (3) compressed by the baffle (4) is inversely proportional to the opening angle of the small bag cover (101), and is characterized in that The adjustment assembly comprises a pull rod (5), a sleeve (6), a swing assembly and an end cover assembly, one end of the pull rod (5) is hinged to the connecting rod mechanism, the other end of the pull rod (5) is threadedly connected to the central axis hole of the sleeve (6), the end of the sleeve (6) away from the pull rod (5) passes through the baffle (4) and is fixedly connected to one end of the swing assembly, and the pull rod (5) is fixedly connected to the baffle (4); The other end of the swing assembly is fixedly connected to the end cover assembly, the end cover assembly is correspondingly arranged at one end of the cavity away from the connecting rod mechanism and covers the cavity, and the end cover assembly is rotatably connected to the fixing seat (2); A flexible shielding component is provided on the inner wall of the avoidance opening, and the shielding component is arranged in contact with the pull rod (5).

2. The aluminum liquid transfer bag with auxiliary opening and closing function according to claim 1 is characterized in that: The end cover assembly comprises a circular cover (13) and a limiting assembly, wherein a first flange (1301) is provided on one side of the circular cover (13), and a second flange (201) folded outward is provided on one end of the cavity away from the connecting rod mechanism, wherein the circular cover (13) has a side of the first flange (1301) in rotational contact with the end face of the second flange (201), and the circumferential inner wall of the first flange (1301) in rotational contact with the circumferential side wall of the second flange (201), and the limiting assembly is arranged between the first flange (1301) and the second flange (201) and can prevent the first flange (1301) and the second flange (201) from moving away from each other.

3. The aluminum liquid transfer bag with auxiliary opening and closing function according to claim 2 is characterized in that: The limiting assembly includes a rotating ring (7) and a bolt (8), at least two threaded through holes are opened on the first flange (1301), the bolt (8) and the threaded through holes are arranged one by one, the bolt (8) is threadedly connected to the threaded through holes, the end of the bolt (8) is in contact with the fixing seat (2), the rotating ring (7) is located between the first flange (1301) and the fixing seat (2), and the rotating ring (7) is in rolling contact with the side of the second flange (201) away from the round cover (13), the rotating ring (7) is rotatably sleeved on the end of the bolt (8), and there is a gap of three to ten centimeters between the nut of the bolt (8) and the first flange (1301).

4. The aluminum liquid transfer bag with auxiliary opening and closing function according to claim 1 is characterized in that: The shielding component comprises bristles (9), the bristles (9) are provided in two rows and each row has a plurality of bristles (9), the bristles (9) are arranged horizontally, one end of the bristles (9) is fixedly connected to the circumferential inner wall of the avoidance opening, and the opposite ends of the two rows of bristles (9) are arranged in contact with each other, and the bristles (9) are made of flexible material.

5. The aluminum liquid transfer bag with auxiliary opening and closing function according to claim 1 is characterized in that: The swing assembly includes a joint component and a telescopic rod mechanism, wherein two joint components are provided, one of which is fixedly connected to the end cover component, and the other is fixedly connected to the sleeve (6), and the free ends of the two joint components have the freedom to swing up and down, and the telescopic rod mechanism is fixed between the two joint components.

6. The aluminum liquid transfer bag with auxiliary opening and closing function according to claim 5 is characterized in that: The telescopic rod mechanism comprises a swing tube (11) and a swing rod (12), one end of the swing tube (11) is fixedly connected to the free end of any one of the joint components, one end of the swing rod (12) is fixedly connected to the free end of another joint component, and the other end of the swing rod (12) is slidably connected to the central axis hole of the swing tube (11), a key groove (1201) is provided on the swing rod (12), and a sliding key (1101) that slidably cooperates with the key groove (1201) is fixed in the central axis hole of the swing tube (11).

7. The aluminum liquid transfer bag with auxiliary opening and closing function according to claim 5 or 6, characterized in that: The joint component is a universal joint (10).

8. The aluminum liquid transfer bag with auxiliary opening and closing function according to claim 5 or 6, characterized in that: The joint component is a fisheye bearing.

9. The aluminum liquid transfer bag with auxiliary opening and closing function according to claim 3 is characterized in that: It also includes a locking block (14), the locking block (14) is threadedly connected to the bolt (8), and the locking block (14) is in contact with the circumferential side wall of the first flange (1301).

10. The aluminum liquid transfer bag with auxiliary opening and closing function according to claim 1 is characterized in that: It also includes a limiting rod (15), which is fixed to one side of the arm plate (103) of the small bag cover (101) for hinged connection with the large bag cover (102).

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