Container with variable volume
By using the beveled design of the inner ring and piston, along with external rod pressing technology, the problem of fluid residue in the vacuum bottle was solved, achieving more efficient fluid utilization and sealing, and reducing manufacturing costs.
Patent Information
- Application Number
- CN202520135124.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-21
AI Technical Summary
In existing vacuum bottle packaging, fluid remains in the gap between the piston and the inner ring, resulting in a significant discrepancy between the packaging capacity and the actual amount used.
The design of the inner ring and piston with beveled surfaces allows the fluid to converge at the vacuum pump during piston movement. The inner groove and guide arc edge ensure easy fit between the piston and inner ring, reducing residual fluid. At the same time, an external rod is used to press the piston to further compress the fluid, and the sealing ring and sealing ring improve the sealing performance.
It effectively reduces the error between packaging capacity and actual usage, improves fluid utilization, reduces manufacturing costs, and enhances sealing performance.
Smart Images
Figure CN223703723U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of packaging products, in particular to a variable volume container. BACKGROUND
[0002] The common fluid packaging form of liquid, emulsion and paste on the market is to use a vacuum bottle. The vacuum bottle refers to a container that can isolate gas from the outside temperature or a container that can isolate external bacteria.
[0003] The vacuum bottle mainly comprises a cylindrical container, an inner ring, a nozzle, a vacuum pump and a piston. The inner ring is installed on the cylindrical container to form a closed space. An air inlet is formed on the bottom of the cylindrical container. The nozzle and the vacuum pump are both installed on the inner ring. The piston is located in the cylindrical container.
[0004] The working principle is that the vacuum pump is pressed to form a vacuum state between the piston and the inner ring. The air inlet allows air to enter, and the atmospheric pressure is used to push the piston at the bottom of the bottle forward. The fluid can flow out through the nozzle via the vacuum pump. However, when the vacuum pump is pressed until no fluid flows out, it is found that some fluid remains in the gap between the piston and the inner ring, resulting in a large error between the packaging capacity and the actual usage. CONTENT OF THE INVENTION
[0005] In order to reduce the error between the packaging capacity and the actual usage, the present application provides a variable volume container.
[0006] The variable volume container provided by the present application adopts the following technical scheme:
[0007] A variable volume container comprises a material box, an inner ring, a vacuum pump and a piston. The inner ring is installed on the opening of the material box to form a loading space inside the material box. An air vent is formed through the bottom wall of the material box away from the inner ring. The vacuum pump is installed at the center of the inner ring. The piston is located in the loading space. The surface of the inner ring facing the piston is inclined. The surface of the piston facing the inner ring is inclined downward. During the process of the piston approaching the inner ring, the fluid in the loading space is guided to the vacuum pump by the inclined surface of the inner ring and the inclined surface of the piston.
[0008] By using the inclined surfaces of the inner ring and the piston, the fluid will gather at the vacuum pump during the movement of the piston. At the end of the piston stroke, the piston and the inner ring are easily attached due to the inclined surface, which improves the problem that the piston and the inner ring cannot be attached at the end of the piston stroke, and some fluid remains in the gap between the piston and the inner ring, thereby reducing the error between the packaging capacity and the actual usage.
[0009] Optionally, the surface of the piston is provided with an inner groove for accommodating the vacuum pump.
[0010] By adopting the above technical solution, the inner groove is provided, which is used for providing a avoiding position of the vacuum pump on the piston, and on the other hand, the remaining fluid can be gathered into the inner groove at the end of the piston stroke, so that the remaining fluid can be sucked out of the material box by the vacuum pump.
[0011] Optionally, the periphery of the piston is provided with a guide arc edge abutting against the inner wall of the material box, the guide arc edge is used for guiding the fluid on the inner wall of the material box to the inclined surface of the piston; the side wall of the inner ring abutting against the inner wall of the material box is provided with an accommodating groove for accommodating the guide arc edge.
[0012] By adopting the above technical solution, the introduction of the guide arc edge makes the fluid adhered on the inner wall of the material box scraped off, and at the same time, the fluid can be gathered to the position of the vacuum pump through the guide arc edge and the inclined surface of the piston, further reducing the remaining fluid in the material box, thereby further reducing the error between the packaging capacity and the actual use amount.
[0013] Optionally, the center position of the inner ring is integrally formed with a mounting channel for inserting the vacuum pump; the inner wall of the mounting channel is integrally formed with a sealing convex ring, and the periphery of the vacuum pump abuts against the sealing convex ring.
[0014] By adopting the above technical solution, the sealing convex ring and the mounting channel are integrally formed, so that the sealing between the vacuum pump and the inner ring can be completed without additional sealing ring, which reduces the risk of fluid overflow from the connection between the vacuum pump and the inner ring, reduces the manufacturing cost, and reduces the installation process.
[0015] Optionally, a sealing ring is arranged between the opening of the material box and the inner ring.
[0016] By adopting the above technical solution, the risk of fluid overflow from the connection between the material box and the inner ring when the piston extrudes the fluid is reduced, and the sealing performance of the loading space is improved.
[0017] Optionally, a convex rib is arranged at the opening of the material box, the convex rib extends along the circumference of the material box; when the inner ring is installed at the opening of the material box, the convex rib forces the sealing ring to bend.
[0018] By adopting the above technical solution, the convex rib is arranged, so that the sealing ring between the material box and the inner ring is elastically deformed, and in the process of elastic deformation of the sealing ring, the gap between the material box and the inner ring is further blocked, thereby reducing the damage of the vacuum environment of the loading space by the external environment temperature, and further improving the sealing performance of the loading space.
[0019] Optionally, the outer bottle is further used for containing and keeping the material box warm, and a flow-through opening is formed through the bottom of the outer bottle, and the flow-through opening is used for allowing external gas to flow to the air hole.
[0020] By using the above technical scheme, the introduction of the outer bottle reduces the risk of the fluid in the material box being affected by the external environment and changing its properties, thereby reducing the risk of the fluid being difficult to flow out of the material box.
[0021] Optionally, a through hole is formed in the bottom of the material box, and the through hole is used for allowing an external stick to pass through.
[0022] By using the above technical scheme, at the end of the stroke of the piston or when the piston is adhered to the inner wall of the material box, the external stick extends into the material box through the through hole and presses the piston, so that the fluid can be smoothly pressed by the piston, and at the same time, the accumulated fluid can be further compressed by the external force, and is gathered to the vacuum pump in combination with the inclined surface of the inner ring and the piston.
[0023] Optionally, a rubber plug is further included, and the rubber plug is used for plugging the through hole.
[0024] By using the above technical scheme, the introduction of the rubber plug reduces the risk of the fluid in the material box being affected by the external environment and changing its properties, thereby reducing the risk of the fluid being difficult to flow out of the material box.
[0025] Optionally, a limiting groove is formed in the surface of the piston facing the bottom wall of the material box, and the limiting groove is used for limiting the displacement of the external stick.
[0026] By using the above technical scheme, the external stick extends into the material box through the through hole and presses the piston, and the limiting groove limits the risk of the stick slipping during the process of pressing the piston, so that the stick can continuously press the piston at the correct position.
[0027] In summary, the present application includes at least one of the following beneficial technical effects:
[0028] By using the inclined surface of the inner ring and the piston, the fluid is gathered at the vacuum pump during the movement of the piston, and at the end of the stroke of the piston, the piston is easily adhered to the inner ring due to the arrangement of the inclined surface, thereby improving the problem that the piston cannot be adhered to the inner ring at the end of the stroke of the piston, and part of the fluid is left in the gap between the piston and the inner ring, thereby reducing the error between the packaging capacity and the actual usage amount;
[0029] The inner groove is arranged to provide a position for the vacuum pump to avoid the piston, and at the end of the stroke of the piston, the remaining fluid is gathered in the inner groove, so that the remaining fluid can be sucked out of the material box by the vacuum pump;
[0030] At the end of the stroke of the piston, or the piston is adhered to the inner wall of the material box, the outer stick extends into the material box through the through hole, presses the piston, and the fluid can be smoothly extruded by the piston. With the help of external force, the accumulated fluid can be further compressed, and the inner ring and the inclined surface of the piston are combined to converge to the vacuum pump. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 is the schematic diagram of the overall structure of example 1.
[0032] Figure 2 is the schematic diagram of the explosion structure of example 1.
[0033] Figure 3 is Figure 1 The enlarged view of part A.
[0034] Figure 4 is the schematic diagram for showing the state of the containing groove containing the guide arc edge.
[0035] Figure 5 is the schematic diagram for showing the state of the outer stick pressing the piston of example 2.
[0036] Reference signs: 1, outer bottle; 11, flow-through port; 2, material box; 21, convex rib; 22, air vent; 23, placing groove; 3, inner ring; 31, mounting channel; 32, sealing convex ring; 33, containing groove; 4, vacuum pump; 5, piston; 51, guide arc edge; 52, inner groove; 53, limiting groove; 6, sealing ring; 7, charging space; 8, rubber plug; 9, through hole. DETAILED DESCRIPTION
[0037] The following will be described in detail in combination with the accompanying Figures 1-5 The present application is further described in detail.
[0038] The embodiments of the present application disclose a variable volume container, which aims to reduce the error between the packaging capacity and the actual use amount.
[0039] Example 1, refer to Figure 1 and Figure 2 A variable volume container includes an outer bottle 1, a material box 2, an inner ring 3, a vacuum pump 4 and a piston 5, the outer bottle 1 is used for containing and heat-insulating the material box 2, the outer bottle 1 and the material box 2 are buckled together by buckling, and the bottom of the outer bottle 1 is provided with a flow-through port 11.
[0040] Refer to Figure 1 and Figure 3The opening of the material box 2 is integrally formed with a convex rib 21 extending along the circumference of the material box 2. A sealing ring 6 is placed on the convex rib 21 at the opening of the material box 2. The inner ring 3 is threadedly connected to the outer bottle 1 and blocks the opening of the material box 2, so that the interior of the material box 2 forms a filling space 7. The bottom wall of the material box 2 away from the inner ring 3 is provided with a vent 22. When the inner ring 3 is installed at the opening of the material box 2, the convex rib 21 forces the sealing ring 6 to bend.
[0041] Referring to Figure 2 and Figure 3 The center of the inner ring 3 is integrally formed with a mounting channel 31 for the vacuum pump 4 to be inserted. The inner wall of the mounting channel 31 is integrally formed with a sealing convex ring 32, and the circumferential side of the vacuum pump 4 abuts against the sealing convex ring 32. It is worth noting that the position of the sealing convex ring 32 is set at the communication between the mounting channel 31 and the filling space 7, so as to reduce the risk of fluid in the filling space 7 entering the mounting channel 31 and overflowing to the outside.
[0042] Referring to Figure 1 , Figure 3 and Figure 4 The piston 5 is located in the filling space 7, and the circumferential side of the piston 5 is integrally formed with a guide arc edge 51 abutting against the inner wall of the material box 2. The side wall of the inner ring 3 abutting against the inner wall of the material box 2 is provided with a receiving groove 33 for receiving the guide arc edge 51. The guide arc edge 51 not only can scrape off the fluid adhered to the inner wall of the material box 2, but also can reduce the contact area between the piston 5 and the inner wall of the material box 2. At the same time, the guide arc edge 51 and the inner wall of the material box 2 form a closed cavity. When the piston 5 extrudes the fluid, due to atmospheric pressure, it is difficult for the fluid to enter the gap between the piston 5 and the inner wall of the material box 2, thereby reducing the risk of the fluid entering the gap between the piston 5 and the material box 2, causing the piston 5 to move difficultly, thereby reducing the friction between the piston 5 and the material box 2 during the movement of the piston 5, so that the piston 5 can move smoothly in the filling space 7.
[0043] Referring to Figure 1 and Figure 4 The surface of the inner ring 3 facing the piston 5 is inclinedly arranged, and the surface of the piston 5 facing the inner ring 3 is also inclinedly arranged. The surface of the piston 5 is integrally formed with an inner recess 52 at the center position for accommodating the vacuum pump 4. The inner bottom wall of the material box 2 is integrally formed with a placement groove 23 for accommodating the outer convex inner recess 52 structure of the piston 5. The purpose of designing the placement groove 23 is to reduce the risk of the fluid impacting and deviating the position of the piston 5 during the filling of the fluid into the material box 2, thereby improving the problem that the piston 5 is difficult to move after the fluid is filled.
[0044] The implementation principle of the embodiment 1 is that the vacuum pump 4 is pressed, a vacuum state is formed between the piston 5 and the inner ring 3, external air enters the material box 2 through the flow-through port 11 and the air vent 22, the atmospheric pressure is used to push the piston 5 to move forward, and the fluid can flow out through the vacuum pump 4. During the movement of the piston 5, the guide arc edge 51 scrapes and guides the fluid on the inner wall of the material box 2 to the inclined surface of the piston 5, and the fluid in the loading space 7 is guided to the inner recess 52 by the inclined surface of the inner ring 3 and the inclined surface of the piston 5, and the fluid will gather at the vacuum pump 4. Due to the arrangement of the inclined surface, the piston 5 and the inner ring 3 are easy to adhere to each other, the problem that the piston 5 and the inner ring 3 cannot adhere to each other at the end of the stroke of the piston 5, and part of the fluid is left in the gap between the piston 5 and the inner ring 3 is improved, thereby reducing the error between the packaging capacity and the actual use amount.
[0045] The embodiment 2 is described with reference to Figure 1 and Figure 5 The difference between the embodiment 2 and the embodiment 1 is that the rubber plug 8 is further included, the bottom of the outer bottle 1 and the material box 2 are both provided with the through hole 9, the through hole 9 is used for allowing the external stick to pass through, and the rubber plug 8 is used for plugging the through hole 9. The surface of the piston 5 facing the bottom wall of the material box 2 is provided with the limiting groove 53, and the limiting groove 53 is used for limiting the displacement of the external stick. The external stick can be a stick pre-placed on the container bottle cap, or a disposable chopstick or the like, and the embodiment of the application is not limited.
[0046] The implementation principle of the embodiment 2 is that at the end of the stroke of the piston 5, or the piston 5 is adhered to the inner wall of the material box 2, the rubber plug 8 is removed, the external stick is inserted into the material box 2 through the through hole 9, the piston 5 is pressed, the fluid can be smoothly extruded by the piston 5, and the accumulated fluid can be further compressed by the external force, and the fluid is gathered at the vacuum pump 4 by the inclined surface of the inner ring 3 and the piston 5.
[0047] The above are the preferred embodiments of the application, and are not used to limit the protection scope of the application, so that: any equivalent changes made on the basis of the structure, shape, principle of the application should be covered in the protection scope of the application.
Claims
1. A container with variable volume, characterized in that: The device includes a material box (2), an inner ring (3), a vacuum pump (4), and a piston (5). The inner ring (3) is installed on the opening of the material box (2), forming a loading space (7) inside the material box (2). A vent (22) is provided through the bottom wall of the material box (2) away from the inner ring (3). The vacuum pump (4) is installed at the center of the inner ring (3). The piston (5) is located in the loading space (7). The inner ring (3) is inclined to the surface facing the piston (5). The piston (5) is inclined downward to the surface facing the inner ring (3). When the piston (5) approaches the inner ring (3), the fluid in the loading space (7) is guided to the vacuum pump (4) by the inclined surface of the inner ring (3) and the inclined surface of the piston (5).
2. A variable-volume container according to claim 1, characterized in that: The piston (5) has an inner groove (52) on its surface, which is used to accommodate the vacuum pump (4).
3. A variable-volume container according to claim 1, characterized in that: The piston (5) has a guide arc edge (51) on its periphery. The guide arc edge (51) abuts against the inner wall of the material box (2). The guide arc edge (51) is used to allow fluid from the inner wall of the material box (2) to flow to the inclined surface of the piston (5). The inner ring (3) has a receiving groove (33) on its side wall that abuts against the inner wall of the material box (2). The receiving groove (33) is used to receive the guide arc edge (51).
4. A variable-volume container according to claim 1, characterized in that: An installation channel (31) is integrally formed at the center of the inner ring (3), and the installation channel (31) is for the vacuum pump (4) to be inserted; a sealing protrusion (32) is integrally formed on the inner wall of the installation channel (31), and the periphery of the vacuum pump (4) abuts against the sealing protrusion (32).
5. A variable-volume container according to claim 1, characterized in that: A sealing ring (6) is provided between the opening of the material box (2) and the inner ring (3).
6. A variable-volume container according to claim 5, characterized in that: The opening of the material box (2) is provided with a protruding rib (21), which extends along the circumference of the material box (2); when the inner ring (3) is installed at the opening of the material box (2), the protruding rib (21) forces the sealing ring (6) to bend.
7. A variable-volume container according to claim 1, characterized in that: It also includes an outer bottle (1), which is used to contain and keep the material box (2) warm. The bottom of the outer bottle (1) is provided with a flow port (11), which is used to allow external gas to flow to the vent (22).
8. A variable-volume container according to claim 1, characterized in that: The bottom of the material box (2) is provided with a through hole (9), which is used for external rods to pass through.
9. A variable-volume container according to claim 8, characterized in that: It also includes a rubber plug (8) for sealing the through hole (9).
10. A variable-volume container according to claim 8, characterized in that: The piston (5) has a limiting groove (53) on the surface facing the bottom wall of the material box (2), and the limiting groove (53) is used to limit the displacement of the external rod.