Novel tin can

Abstract

The novel tin can comprises a can body, a top cover covers the top of the can body, a concave cylinder is fixedly connected to the middle of the top wall of the top cover, a rotating cylinder is rotationally connected to the inner bottom wall of the concave cylinder through a bearing, a first air hole is formed in the top wall of the rotating cylinder, and second air holes are formed in the side wall of the rotating cylinder and the side wall of the concave cylinder. A blocking ball is fixed to the side, away from the second air hole, of the inner wall of the concave barrel, a piston barrel is fixed to the upper surface of the top cover, and an exhaust pipe is fixed to the side wall of one end of the piston barrel. According to the utility model, the tank body, the top cover, the concave cylinder, the rotating cylinder, the piston cylinder, the exhaust pipe, the exhaust pipe, the piston rod and the piston head are arranged, and after the top cover covers the top of the tank body, the piston head can be moved through the piston rod, so that air in the tank body is exhausted through the exhaust pipe by utilizing the exhaust pipe, and negative pressure is formed in the tank body; the top cover can cover the top of the tank body more firmly, and the internal sealing performance of the tank body is improved.

Description

Technical Field

[0001] This utility model relates to the field of tin can technology, and in particular to a novel tin can. Background Technology

[0002] Tin cans, also known as iron cans or tin boxes, are cans made of tinplate. Due to their excellent sealing, preservation, light protection, sturdiness, and unique metallic decorative charm, tin cans are widely used in the packaging container industry and have a variety of uses, including mooncake cans, chocolate cans, tea cans, coffee cans, biscuit cans, and health product cans, etc.

[0003] Existing tin cans mainly consist of a can body and a top cover, which are locked together by ridges and grooves. However, after prolonged use, the sealing performance of existing tin cans deteriorates significantly, and the locking force of the ridges and grooves also weakens, causing the top cover to become loosely attached to the top of the can. Therefore, to address these shortcomings, this invention proposes a novel tin can. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a new type of tin can.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel tin can, comprising a can body, a top cover covering the top of the can body, a concave cylinder fixedly connected to the middle of the top wall of the top cover, a rotating cylinder rotatably connected to the bottom wall of the concave cylinder via a bearing, a first air hole on the top wall of the rotating cylinder, a second air hole on the side wall of both the rotating cylinder and the concave cylinder, a stopper ball fixed to the side of the inner wall of the concave cylinder away from the second air hole, a piston cylinder fixed to the upper surface of the top cover, a suction pipe fixed to one side wall of the piston cylinder, and the other end of the suction pipe extending through the top cover into the interior of the top cover, an exhaust pipe fixed to the side wall of the piston cylinder near the suction pipe, a piston rod slidably connected to the end of the piston cylinder away from the exhaust pipe, a piston head fixed to one end of the piston rod inside the piston cylinder, and the piston head slidably connected to the inner wall of the piston cylinder, and a handle fixed to the other end of the piston rod.

[0006] Furthermore, both the top cover sidewall and the top sidewall of the tank are provided with grooves, and the protruding part of the groove on the top cover sidewall is inserted into the groove on the surface of the tank.

[0007] Furthermore, an annular plate is fixed to the inner top wall of the top cover, the outer wall of the annular plate is in contact with the inner wall of the tank, and a first sealing ring is fixed to the top of the tank, the first sealing ring being in contact with the inner top wall of the top cover.

[0008] Furthermore, the ball is made of rubber.

[0009] Furthermore, a second sealing ring is fixed to the inner wall of the concave cylinder above the second air hole, and the second sealing ring is in contact with the outer wall of the rotating cylinder.

[0010] Furthermore, a one-way valve is fixedly connected to the middle of both the extraction pipe and the exhaust pipe.

[0011] Furthermore, the piston head and the inner wall of the piston cylinder are both fixedly connected to a spring.

[0012] The beneficial effects of this utility model are:

[0013] In use, this novel tin can comprises a can body, a top cover, a concave cylinder, a rotating cylinder, a piston cylinder, a suction pipe, an exhaust pipe, a piston rod, and a piston head. When the top cover is closed on the top of the can body, the piston rod moves the piston head, thereby drawing air out of the can body through the suction pipe and expelling it through the exhaust pipe. This creates a negative pressure inside the can body, and under the action of external pressure, the top cover fits more securely on the top of the can body, increasing the internal sealing of the can. When it is necessary to open the top cover, the rotating cylinder inside the concave cylinder is rotated, causing the second vent on the rotating cylinder to align with the second vent on the side wall of the concave cylinder. At this time, external air can enter the can body through the second vent, making the internal and external pressures of the can body equal, facilitating the removal of the top cover from the top of the can. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 : Overall perspective view of this utility model;

[0016] Figure 2 : Overall sectional view of this utility model;

[0017] Figure 3 The present utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 The present utility model Figure 2 Enlarged view at point B in the middle;

[0019] Figure 5 The present utility model Figure 2 Enlarged view of point C.

[0020] The attached figures are labeled as follows:

[0021] 1. Tank body; 2. Top cover; 3. Groove; 4. Annular plate; 5. First sealing ring; 6. Concave cylinder; 61. Plug ball; 62. Second sealing ring; 7. Rotary cylinder; 71. First vent; 8. Second vent; 9. Piston cylinder; 10. Suction pipe; 11. Exhaust pipe; 12. One-way valve; 13. Piston rod; 14. Piston head; 15. Handle; 16. Spring. Detailed Implementation

[0022] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-5 As shown, a novel tin can is disclosed, comprising a can body 1, a top cover 2 covering the top of the can body 1, a concave cylinder 6 fixedly connected to the middle of the top wall of the top cover 2, a rotating cylinder 7 rotatably connected to the bottom wall of the concave cylinder 6 via a bearing, a first vent 71 opening on the top wall of the rotating cylinder 7, and a second vent 8 opening on the side walls of both the rotating cylinder 7 and the concave cylinder 6, a stop ball 61 fixed on the side of the inner wall of the concave cylinder 6 away from the second vent 8, a piston cylinder 9 fixed on the upper surface of the top cover 2, a suction pipe 10 fixed on one side wall of the piston cylinder 9, and the other end of the suction pipe 10 extending through the top cover 2 into the interior of the top cover 2, an exhaust pipe 11 fixed on the side wall of the piston cylinder 9 near the suction pipe 10, a piston rod 13 passing through and slidably connected to the end of the piston cylinder 9 away from the exhaust pipe 11, a piston head 14 fixed at one end of the piston rod 13 inside the piston cylinder 9, and the piston head 14 slidably connected to the inner wall of the piston cylinder 9, and a handle 15 fixed at the other end of the piston rod 13.

[0024] The top cover 2 side wall and the top side wall of the tank body 1 are both provided with grooves 3. The protruding part of the groove 3 on the side wall of the top cover 2 is inserted into the groove 3 on the surface of the tank body 1.

[0025] The top cover 2 can be fixed to the top of the tank body 1 by engaging with the groove 3 on the tank body 1.

[0026] An annular plate 4 is fixed to the inner top wall of the top cover 2. The outer side wall of the annular plate 4 is in contact with the inner side wall of the tank body 1. A first sealing ring 5 is fixed to the top of the tank body 1. The first sealing ring 5 is in contact with the inner top wall of the top cover 2.

[0027] The first sealing ring 5 can increase the sealing performance at the connection between the top cover 2 and the tank body 1. The annular plate 4 can increase the friction between the top cover 2 and the tank body 1, thereby increasing the firmness of the top cover 2 on the top of the tank body 1.

[0028] The ball-blocking device 61 is made of rubber.

[0029] When the rotating drum 7 is rotated so that the ball 61 blocks the inside of the second air hole 8 on the rotating drum 7, external air cannot enter the tank 1 through the first air hole 71 and the second air hole 8. When the rotating drum 7 is rotated so that the two second air holes 8 on the rotating drum 7 and the concave cylinder 6 coincide, external air can enter the tank 1 through the first air hole 71 and the second air hole 8, so that the air pressure inside and outside the tank 1 is the same. At this time, it is convenient to remove the top cover 2 from the top of the tank 1.

[0030] A second sealing ring 62 is fixed on the inner wall of the concave cylinder 6 and above the second air hole 8. The second sealing ring 62 is in contact with the outer wall of the rotating cylinder 7.

[0031] The sealing performance between the outer wall of the rotating cylinder 7 and the inner wall of the concave cylinder 6 can be increased by setting a second sealing ring 62.

[0032] One-way valves 12 are fixedly connected to the middle of both the extraction pipe 10 and the exhaust pipe 11.

[0033] After setting the one-way valve 12, the air inside the tank 1 can only enter the piston cylinder 9 along the suction pipe 10, and the air inside the piston cylinder 9 can only be discharged along the exhaust pipe 11.

[0034] A spring 16 is fixedly connected to both the piston head 14 and the inner wall of the piston cylinder 9.

[0035] By setting spring 16, spring 16 can push piston head 14 to automatically reset. Therefore, when piston head 14 is pushed towards exhaust pipe 11 by handle 15, the air inside piston cylinder 9 is compressed and discharged from exhaust pipe 11. After releasing handle 15, spring 16 pushes piston head 14 to reset. During this process, air extraction pipe 10 draws air from inside tank 1 into piston cylinder 9. If handle 15 is pushed and released repeatedly, the air inside tank 1 can be discharged, creating a negative pressure inside tank 1. Then, under the action of external air pressure, the top cover 2 is firmly fixed to the top of tank 1.

[0036] Working principle: After placing items inside the canister 1, place the top cover 2 on top of the canister 1. Then, repeatedly push and release the handle 15 to create negative pressure inside the canister 1, which is beneficial for storing items. Under external pressure, the top cover 2 is firmly fixed to the top of the canister 1. When it is necessary to open the top cover 2, rotate the rotating cylinder 7 to disengage the ball stopper 61 from the second vent 8 on the rotating cylinder 7, and make the second vent 8 on the rotating cylinder 7 and the concave cylinder 6 coincide. At this time, external air can enter the canister 1 through the first vent 71 and the second vent 8. During this process, the sound of air entering the canister 1 can be heard, indicating that the two second vents 8 are aligned. Then, simply remove the top cover 2 from the top of the canister 1. When the negative pressure needs to be drawn back into the tank 1 after the top cover 2 is closed, rotate the rotating drum 7 so that the ball stopper 61 is re-engaged into the second air hole 8 on the rotating drum 7. There is a clear sense of sticking and stopping when the ball stopper 61 is engaged into the second air hole 8, which indicates that the ball stopper 61 has been engaged into the second air hole 8. Finally, the negative pressure can be drawn back into the tank 1.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel tin can, comprising a can body (1), characterized in that: The tank body (1) is covered with a top cover (2). A concave cylinder (6) is fixedly connected to the middle of the top wall of the top cover (2). A rotating cylinder (7) is rotatably connected to the bottom wall of the concave cylinder (6) through a bearing. A first air hole (71) is opened on the top wall of the rotating cylinder (7). A second air hole (8) is opened on the side wall of both the rotating cylinder (7) and the concave cylinder (6). A stop ball (61) is fixed on the side of the inner wall of the concave cylinder (6) away from the second air hole (8). A piston cylinder (9) is fixed on the upper surface of the top cover (2). A suction device is fixed on the side wall of one end of the piston cylinder (9). The air pipe (10) is connected to the piston cylinder (9) with an exhaust pipe (11) fixed on the side wall near the exhaust pipe (10). The piston cylinder (9) is connected to a piston rod (13) through and slidably connected to the end away from the exhaust pipe (11). The piston rod (13) is connected to a piston head (14) at one end inside the piston cylinder (9) and is slidably connected to the inner wall of the piston cylinder (9). The piston rod (13) is connected to a handle (15) at the other end.

2. A novel tin can according to claim 1, characterized in that: The top cover (2) side wall and the top side wall of the tank body (1) are both provided with grooves (3), and the protruding part of the groove (3) on the side wall of the top cover (2) is inserted into the groove (3) on the surface of the tank body (1).

3. A novel tin can according to claim 1, characterized in that: An annular plate (4) is fixed to the inner top wall of the top cover (2). The outer side wall of the annular plate (4) is in contact with the inner side wall of the tank body (1). A first sealing ring (5) is fixed to the top of the tank body (1). The first sealing ring (5) is in contact with the inner top wall of the top cover (2).

4. A novel tin can according to claim 1, characterized in that: The ball stopper (61) is made of rubber.

5. A novel tin can according to claim 1, characterized in that: A second sealing ring (62) is fixed on the inner wall of the concave cylinder (6) and above the second air hole (8), and the second sealing ring (62) is in contact with the outer wall of the rotating cylinder (7).

6. A novel tin can according to claim 1, characterized in that: One-way valves (12) are fixedly connected to the middle of both the extraction pipe (10) and the exhaust pipe (11).

7. A novel tin can according to claim 1, characterized in that: The piston head (14) and the inner wall of the piston cylinder (9) are both fixedly connected to a spring (16).

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