Variable-diameter rubber plug

Abstract

The utility model provides a rubber plug with a variable diameter, which relates to the technical field of rubber plugs, and comprises a conical rubber plug, an adjusting structure is arranged on the conical rubber plug, the adjusting structure mainly comprises a cavity, the cavity is arranged on the conical rubber plug, a piston is connected in the cavity in a sliding manner, and the conical rubber plug is connected with the piston in a sliding manner. The piston is fixedly connected with a push rod, the push rod is fixedly connected with a round block, the round block is fixedly connected with a grip, the grip is provided with two limiting holes, the conical rubber plug is fixedly connected with two fixing blocks, the fixing blocks are slidably connected with limiting rods, and the limiting rods are matched with the limiting holes in size. The utility model solves the problem that the rubber plug is difficult to pull out due to the fact that the rubber plug is tightly attached to the container to generate stronger adhesive force, and particularly when the surface of the rubber plug and the inner wall of the container are rough, the contact surface between the rubber plug and the opening of the container generates overlarge friction force.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber plugs, in particular to a rubber plug with variable diameter. Background Art

[0002] Variable diameter rubber plugs are usually used in situations where they need to adapt to openings of different sizes. The uniqueness of this type of rubber plug is that it can slightly change its diameter during installation to better fit the internal diameter of the container or pipe. Currently, most of the variable diameter rubber plugs are designed to be conical, with one end of the rubber plug wider than the other. When plugged into a smaller opening, the narrower end enters first, and as it goes deeper, the plug gradually expands to achieve a better sealing effect.

[0003] When using the current variable-diameter rubber stoppers, staff often find that: the current variable-diameter rubber stoppers are usually inserted into containers or pipes as much as possible to make the rubber stoppers fit with the opening to improve the sealing performance. However, due to the tight fit between the rubber stoppers and the container, strong adhesion will be generated. Especially when the surface of the rubber stopper and the inner wall of the container are rough, the contact surface between the rubber stopper and the container mouth will generate excessive friction, making it difficult to pull out the rubber stopper. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a rubber plug with a variable diameter.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a rubber plug with variable diameter, including a conical rubber plug, on which an adjustment structure is arranged, and the adjustment structure is mainly composed of a cavity, and the cavity is opened on the conical rubber plug.

[0006] The effect achieved by the above-mentioned components is: when the conical rubber plug is inserted into the opening of a container or a pipe, when it is taken out, the cavity can be squeezed so that the inner wall of the cavity shrinks inward, thereby driving the conical rubber plug to shrink, so that the cross-sectional diameter of the conical rubber plug is reduced, thereby reducing the adhesion and friction between the conical rubber plug and the inner wall of the container or the pipe, thereby avoiding the situation where a strong adhesion force is generated due to the tight fit between the rubber plug and the container, especially when the surface of the rubber plug and the inner wall of the container are rough, the contact surface between the rubber plug and the container mouth will generate excessive friction, making the rubber plug difficult to pull out.

[0007] Preferably, a piston is slidably connected in the cavity, and a push rod is fixedly connected to the piston.

[0008] The effect achieved by the above components is: the piston can be driven to slide up by pulling the push rod, thereby increasing the gas volume in the cavity, causing the pressure in the cavity to decrease, so that the inner wall of the cavity contracts inward, making the operation more convenient, and before installing the conical rubber plug, pull the piston upward, and after the position of the conical rubber plug is determined, push the piston downward to increase the pressure in the cavity, and press the outer wall of the conical rubber plug tightly against the inner wall of the container to improve the sealing.

[0009] Preferably, a round block is fixedly connected to the push rod, and a handle is fixedly connected to the round block.

[0010] The effect achieved by the above components is that the piston can be driven to move up and down by the handle, making the operation more convenient.

[0011] Preferably, two limiting holes are provided on the handle, two fixing blocks are fixedly connected to the conical rubber plug, a limiting rod is slidably connected to the fixing block, and the limiting rod is adapted to the size of the limiting hole.

[0012] The effect achieved by the above components is: during the sealing connection process, the piston is pushed downward so that the round block is stuck in the cavity, and then the two limit rods are slid and inserted into the two limit holes respectively to limit the round block and prevent the round block from sliding up under the action of air pressure.

[0013] Preferably, a spring is sleeved on the limiting rod, one end of the spring is fixedly connected to the fixing block, and the other end of the spring is fixedly connected to the limiting rod.

[0014] The effect achieved by the above components is that when the limit rod is stuck in the limit hole, the spring is in a stretched state, so the rebound elastic force of the spring acts on the limit rod, which can enhance the limiting effect of the limit rod and the limit hole.

[0015] Preferably, a draw cord is fixedly connected to the conical rubber plug.

[0016] The effect achieved by the above components is that the conical rubber plug can be pulled by the pull rope, making the operation of pulling out the conical rubber plug more convenient.

[0017] Preferably, a sealing structure is provided on the conical rubber plug, and the sealing structure is mainly composed of three rubber rings, and the three rubber rings are all fixedly connected to the conical rubber plug.

[0018] The effect achieved by the above components is that the rubber ring is squeezed against the inner wall of the container to improve the sealing performance.

[0019] Preferably, two arc plates are fixedly connected in the cavity, two connecting blocks are rotatably connected to the arc plates, two connecting rods are fixedly connected to the connecting blocks, four connecting rods are rotatably connected to round rods, two round rods are fixedly connected to connecting plates, and one end of the connecting plate is fixedly connected to the piston.

[0020] The effect achieved by the above-mentioned components is: when the piston is slid upward, the connecting plate will be driven to move upward, and then the four connecting blocks will be driven to rotate, so that the two arc-shaped plates are close to each other, and then the inner wall of the cavity will be further contracted. When the piston is pushed downward, the connecting plate will be pushed to move downward, and then the two arc-shaped plates will be driven to move away from each other, expanding the inner wall of the cavity, further improving the convenience of removal and the sealing of the connection.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are that, in the utility model, by providing an adjustment structure, the conical rubber plug is inserted into the opening of the container or the pipe, and when it is taken out, the cavity can be squeezed to make the inner wall of the cavity shrink inward, thereby driving the conical rubber plug to shrink, so that the cross-sectional diameter of the conical rubber plug is reduced, and the piston can be driven to slide up by pulling the push rod, thereby increasing the gas volume in the cavity, causing the pressure in the cavity to decrease, so that the inner wall of the cavity shrinks inward, making the operation more convenient, and before installing the conical rubber plug, the piston is pulled upward, and after the position of the conical rubber plug is determined, the piston is pushed downward, so that the pressure in the cavity becomes larger, and the outer wall of the conical rubber plug is tightly pressed against the inner wall of the container, thereby improving the sealing performance, and the piston can be driven to move up and down by the handle, making the operation more convenient and airtight. During the sealing connection process, the piston is pushed downward to make the round block stuck in the cavity, and then the two limit rods are slid and inserted into the two limit holes respectively to limit the round block and prevent it from sliding up under the action of air pressure. When the limit rod is stuck in the limit hole, the spring is in a stretched state, so the rebound elastic force of the spring acts on the limit rod, which can enhance the limiting effect of the limit rod and the limit hole. The conical rubber plug can be pulled by the pull rope, making it easier to pull out the conical rubber plug, thereby reducing the adhesion and friction between the conical rubber plug and the inner wall of the container or pipe, thereby avoiding the strong adhesion caused by the tight fit between the rubber plug and the container, especially when the surface of the rubber plug and the inner wall of the container are rough, which will cause the contact surface between the rubber plug and the container mouth to produce excessive friction, making it difficult to pull out the rubber plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a rubber plug with a variable diameter;

[0023] Figure 2 A cross-sectional view of a rubber plug with a variable diameter is provided for the utility model;

[0024] Figure 3This is a partial schematic diagram of an adjustment structure of a rubber plug with a variable diameter proposed by the utility model;

[0025] Figure 4 The utility model provides a partial schematic diagram of a sealing structure of a rubber plug with a variable diameter.

[0026] Legend: 1. Conical rubber plug; 2. Adjustment structure; 21. Cavity; 22. Piston; 23. Push rod; 24. Round block; 25. Handle; 26. Limit hole; 27. Fixing block; 28. Limit rod; 29. ​​Spring; 210. Pull rope; 3. Sealing structure; 31. Rubber ring; 32. Arc plate; 33. Connecting block; 34. Connecting rod; 35. Round rod; 36. Connecting plate. DETAILED DESCRIPTION

[0027] Embodiment 1, as Figure 1 As shown, a rubber stopper with a variable diameter comprises a conical rubber stopper 1.

[0028] Reference Figure 2 and Figure 3The conical rubber plug 1 is provided with an adjustment structure 2, which is mainly composed of a cavity 21. The cavity 21 is opened on the conical rubber plug 1. When the conical rubber plug 1 is inserted into the opening of a container or a pipe, the cavity 21 can be squeezed to make the inner wall of the cavity 21 shrink inward, thereby driving the conical rubber plug 1 to shrink, so that the cross-sectional diameter of the conical rubber plug 1 is reduced, thereby reducing the adhesion and friction between the conical rubber plug 1 and the inner wall of the container or pipe, thereby avoiding the strong adhesion caused by the tight fit between the rubber plug and the container, especially when the surface of the rubber plug and the inner wall of the container are rough, which will make The contact surface between the rubber stopper and the container mouth generates too much friction, which makes it difficult to pull out the rubber stopper. A piston 22 is slidably connected in the cavity 21, and a push rod 23 is fixedly connected to the piston 22. The piston 22 can be driven to slide upward by pulling the push rod 23, thereby increasing the volume of gas in the cavity 21, causing the pressure in the cavity 21 to decrease. Therefore, the inner wall of the cavity 21 contracts inward, making the operation more convenient. Before installing the conical rubber stopper 1, pull the piston 22 upward. After the position of the conical rubber stopper 1 is determined, push the piston 22 downward to increase the pressure in the cavity 21 and increase the pressure of the conical rubber stopper 1. The outer wall is tightly pressed against the inner wall of the container to improve the sealing performance. A round block 24 is fixedly connected to the push rod 23, and a handle 25 is fixedly connected to the round block 24. The handle 25 can be used to drive the piston 22 to move up and down, making the operation more convenient. Two limiting holes 26 are provided on the handle 25, and two fixed blocks 27 are fixedly connected to the conical rubber plug 1. The fixed block 27 is slidably connected to a limiting rod 28, and the limiting rod 28 is adapted to the size of the limiting hole 26. During the sealing connection process, the piston 22 is pushed downward to make the round block 24 stuck in the cavity 21, and then the two limiting rods 28 are slid and inserted into the two limiting holes 26 respectively. In the embodiment, the round block 24 is limited to prevent the round block 24 from sliding up under the action of air pressure. A spring 29 is sleeved on the limiting rod 28, one end of the spring 29 is fixedly connected to the fixing block 27, and the other end of the spring 29 is fixedly connected to the limiting rod 28. When the limiting rod 28 is stuck in the limiting hole 26, the spring 29 is in a stretched state, so the rebound elastic force of the spring 29 acts on the limiting rod 28, which can enhance the limiting effect of the limiting rod 28 and the limiting hole 26. A pull rope 210 is fixedly connected to the conical rubber plug 1, and the conical rubber plug 1 can be pulled by the pull rope 210, so that the operation of pulling out the conical rubber plug 1 is more convenient.

[0029] Reference Figure 4The conical rubber stopper 1 is provided with a sealing structure 3, which is mainly composed of three rubber rings 31. The three rubber rings 31 are all fixedly connected to the conical rubber stopper 1. The rubber rings 31 are squeezed against the inner wall of the container to improve the sealing performance. Two arc plates 32 are fixedly connected in the cavity 21. Two connecting blocks 33 are rotatably connected to the arc plates 32. Two connecting rods 34 are fixedly connected to the connecting blocks 33. Four connecting rods 34 are rotatably connected to round rods 35. Two round rods 35 are fixedly connected to connecting plates 36. One end of the connecting plate 36 is fixedly connected to the piston 22. When the piston 22 is slid upward, the connecting plate 36 is driven to move upward, thereby driving the four connecting blocks 33 to rotate, so that the two arc plates 32 are close to each other, thereby further shrinking the inner wall of the cavity 21. When the piston 22 is pushed downward, the connecting plate 36 is pushed downward, thereby driving the two arc plates 32 to move away from each other, expanding the inner wall of the cavity 21, and further improving the convenience of removal and the sealing of the connection.

[0030] Working principle: insert the conical rubber plug 1 into the opening of a container or a pipe. When taking it out, the cavity 21 can be squeezed to make the inner wall of the cavity 21 shrink inward, thereby driving the conical rubber plug 1 to shrink, so that the cross-sectional diameter of the conical rubber plug 1 is reduced, thereby reducing the adhesion and friction between the conical rubber plug 1 and the inner wall of the container or the pipe, thereby avoiding the strong adhesion caused by the tight fit between the rubber plug and the container, especially when the surface of the rubber plug and the inner wall of the container are rough, which will cause the contact surface between the rubber plug and the container mouth to generate excessive friction. In the case where the rubber plug is difficult to pull out, the piston 22 can be driven upward by pulling the push rod 23, thereby increasing the gas volume in the cavity 21, causing the pressure in the cavity 21 to decrease, so that the inner wall of the cavity 21 contracts inward, making the operation more convenient. Before installing the conical rubber plug 1, the piston 22 is pulled upward, and after the position of the conical rubber plug 1 is determined, the piston 22 is pushed downward to increase the pressure in the cavity 21, and the outer wall of the conical rubber plug 1 is tightly pressed against the inner wall of the container to improve the sealing performance. The piston 22 can be driven by the handle 25. The up and down movement makes the operation more convenient. During the sealing connection process, the piston 22 is pushed downward to make the round block 24 stuck in the cavity 21, and then the two limiting rods 28 are slid and inserted into the two limiting holes 26 respectively to limit the round block 24 to prevent the round block 24 from sliding up under the action of air pressure. When the limiting rod 28 is stuck in the limiting hole 26, the spring 29 is in a stretched state, so the rebound elastic force of the spring 29 acts on the limiting rod 28, which can strengthen the limiting effect of the limiting rod 28 and the limiting hole 26. The conical rubber plug 1 can be pulled by the pull rope 210 to make The operation of pulling out the tapered rubber plug 1 is more convenient, and the rubber ring 31 is squeezed against the inner wall of the container to improve the sealing performance. When the piston 22 is slid upward, the connecting plate 36 will be driven to move upward, thereby driving the four connecting blocks 33 to rotate, so that the two arc plates 32 are close to each other, thereby further shrinking the inner wall of the cavity 21. When the piston 22 is pushed downward, the connecting plate 36 will be pushed downward, thereby driving the two arc plates 32 away from each other, expanding the inner wall of the cavity 21, and further improving the convenience of removal and the sealing of the connection.

[0031] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A rubber stopper with a variable diameter, comprising a tapered rubber stopper (1), characterized in that: The conical rubber stopper (1) is provided with an adjustment structure (2), wherein the adjustment structure (2) is mainly composed of a cavity (21), and the cavity (21) is opened on the conical rubber stopper (1).

2. The variable diameter rubber stopper according to claim 1, characterized in that: A piston (22) is slidably connected in the cavity (21), and a push rod (23) is fixedly connected to the piston (22).

3. The variable diameter rubber stopper according to claim 2, characterized in that: The push rod (23) is fixedly connected to a round block (24), and the round block (24) is fixedly connected to a handle (25).

4. The variable diameter rubber stopper according to claim 3, characterized in that: The handle (25) is provided with two limiting holes (26), the conical rubber plug (1) is fixedly connected with two fixing blocks (27), the fixing blocks (27) are slidably connected with limiting rods (28), and the limiting rods (28) are adapted in size to the limiting holes (26).

5. The variable diameter rubber stopper according to claim 4, characterized in that: A spring (29) is sleeved on the limiting rod (28), one end of the spring (29) is fixedly connected to the fixing block (27), and the other end of the spring (29) is fixedly connected to the limiting rod (28).

6. The variable diameter rubber stopper according to claim 5, characterized in that: A pull rope (210) is fixedly connected to the conical rubber stopper (1).

7. The variable diameter rubber stopper according to claim 6, characterized in that: The conical rubber stopper (1) is provided with a sealing structure (3), and the sealing structure (3) is mainly composed of three rubber rings (31), and the three rubber rings (31) are all fixedly connected to the conical rubber stopper (1).

8. The variable diameter rubber stopper according to claim 7, characterized in that: Two arc-shaped plates (32) are fixedly connected in the cavity (21); two connecting blocks (33) are rotatably connected to the arc-shaped plates (32); two connecting rods (34) are fixedly connected to the connecting blocks (33); four connecting rods (34) are rotatably connected to round rods (35); two round rods (35) are fixedly connected to connecting plates (36); one end of the connecting plate (36) is fixedly connected to the piston (22).

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