A press-type air pump for food containers

Abstract

This utility model relates to a press-type air pump for food containers. It includes a housing and an air extraction component. The bottom of the housing has an upwardly extending air inlet column, which is hollow and connects to the lower end face of the housing. The upper opening of the air inlet column has a first one-way valve that allows air to exit only upwards. The air extraction component is fitted onto the air inlet column, forming a closed receiving cavity within it. The air extraction component has a through hole, and a second one-way valve that allows air to exit only outwards is installed in the through hole. When the receiving cavity expands, air is drawn in through the air inlet column; when the receiving cavity compresses, air is blown out through the through hole. This utility model, by separately mounting the housing on the lid of the food storage container and then fitting the air extraction component onto the air inlet column, along with the two sets of one-way valves on the air inlet column and the air extraction component, allows for continuous air extraction during the expansion / compression of the receiving cavity, resulting in a lower ultimate negative pressure, extended preservation time, and easy disassembly and cleaning, ensuring the hygiene of the air pump.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum preservation technology for food containers, specifically relating to a press-type air pump for food containers. Background Technology

[0002] The purpose of food containers is to preserve the food they contain. Besides freezing in a refrigerator, removing air from the container can extend its shelf life. A common solution is to install a vacuum pump on the lid. These pumps, often integrated into the lid, release gas from the piston before using the silicone's rebound force to evacuate the food. However, this method of vacuuming via silicone rebound is inefficient and has a poor feel. Furthermore, the vacuum pressure achieved depends on the silicone's elasticity, typically only reaching pressures above -5 kPa. Excessive pressure limits the preservation time.

[0003] In addition, some commercially available air pumps and lids are integrated. When storing items with strong odors or oily vapors, such as raw meat or pickled products, the air pump sucks in odorous gases / vapors, and the inside cannot be cleaned. Over time, this can lead to a putrid smell and affect the hygiene and safety of the food in the food storage container. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a press-type air pump for food containers. By separately setting the housing on the lid of the food storage box and then mounting the air extraction component on the air inlet column, the two sets of one-way valves on the air inlet column and the air extraction component can continuously extract air outward during the expansion / compression of the storage chamber, resulting in a lower ultimate negative pressure, extending the preservation time, and at the same time, it can be easily disassembled and cleaned to ensure the hygiene of the air pump.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A press-type air pump for a food container includes a housing and an air extraction component. The housing has an upwardly extending air intake column at its bottom, the air intake column being hollow and communicating with the lower end face of the housing. A first one-way valve, allowing air to exit only upwards, is provided at the upper opening of the air intake column. The air extraction component is fitted onto the air intake column and forms a closed receiving cavity within it. The air extraction component has a through hole, and a second one-way valve, allowing air to exit only outwards, is provided within the through hole. When the receiving cavity expands, air is drawn in through the air intake column; when the receiving cavity compresses, air is blown out through the through hole.

[0007] The air extraction component consists of a bracket and a silicone sleeve. The bracket is horizontally positioned and connected within the housing. A buckle is provided on the edge of the bracket, allowing it to be detachably connected to a slot on the housing via the buckle. The bracket is located above the air intake column, and a through-hole is provided on the bracket. The silicone sleeve is a bowl-shaped structure that extends vertically and opens upwards. The upper end of the silicone sleeve is detachably connected to the lower end of the bracket, and the lower end of the silicone sleeve fits onto the outer wall of the air intake column. The receiving cavity is formed by the bracket, the silicone sleeve, the air intake column, and a first one-way valve. When the lower end of the silicone sleeve moves upwards along the outer wall of the air intake column, it compresses the receiving cavity; when it moves downwards, it expands the receiving cavity.

[0008] It also includes a pressure plate, which is detachably connected to the lower end of the silicone sleeve; the edge of the pressure plate is provided with a guide opening, and the housing is provided with a guide part. During the process of the pressure plate being embedded into the housing, the guide opening and the guide part cooperate with each other.

[0009] It also includes a spring, which is fitted onto the outer wall of the intake column, with the upper end of the spring abutting against the lower end of the silicone sleeve and the lower end of the spring abutting against the bottom of the housing.

[0010] It also includes a button, and the edge of the pressure plate is provided with an upwardly extending guide plate, the bottom of the button can abut against the upper end of the guide plate; the edge of the button is provided with a downwardly extending embedding plate, the embedding plate is located outside the outer wall of the guide plate.

[0011] This type of press-type vacuum pump for food containers features a housing integrally molded onto the lid of the food storage container, or it can be assembled onto the lid. The bottom of the housing has an upward-extending hollow air intake column. A first one-way valve on the air intake column ensures that air can only exit upwards from the bottom of the housing along the air intake column, preventing air from entering from the outside when pumping air out of the food storage container. To achieve outward pumping, an air extraction component is fitted onto the air intake column. The air extraction component has a closed receiving cavity inside, and a through-hole on the air extraction component communicating with the receiving cavity has a second one-way valve, allowing air in the receiving cavity to be extracted only from the inside out through the through-hole. Therefore, when the receiving cavity expands, air from inside the food storage container is drawn into the receiving cavity through the air intake column; when the receiving cavity compresses, air is blown out through the through-hole, achieving a continuous outward pumping effect on the food storage container, creating negative pressure inside the container.

[0012] However, compressing the cavity is easy; simply pressing the suction device by hand deforms it and compresses the air inside. Expanding the cavity, however, requires external force. Therefore, the suction device is designed to consist of a support and a silicone sleeve. The support is horizontally placed inside the housing and remains fixed, while the silicone sleeve is cup-shaped and mounted upwards on the lower end of the support. This results in the cavity being enclosed by the support, silicone sleeve, air intake column, and the first one-way valve. The lower end of the silicone sleeve has a downward-opening lip shape, fitting snugly against the outer wall of the air intake column. The lower end of the silicone sleeve is then... When the outer wall of the air intake column moves upward, it compresses the receiving cavity; when it moves downward, it expands the receiving cavity. A pressure plate is set at the lower end of the silicone sleeve, and a guide plate on the pressure plate extends upward and is higher than the bracket. Therefore, when the guide plate is pressed downward by hand, it will drive the lower end of the silicone sleeve downward and expand the receiving cavity, allowing the air in the food storage container to enter the receiving cavity along the air intake column. When the guide plate is pulled upward by hand, it will drive the lower end of the silicone sleeve upward and compress the receiving cavity, drawing the air in the receiving cavity out through the through hole. Repeated operation can increase the negative pressure inside the food storage container.

[0013] However, manually pressing down and pulling up the guide plate to perform the suction operation is equivalent to doing two tasks, which is very laborious. Therefore, a spring is added inside. The spring is fitted onto the outer wall of the air intake column. The upper end of the spring abuts against the lower end of the silicone sleeve, and the lower end abuts against the bottom of the housing. Therefore, when the guide plate is pressed down, the spring is compressed. When the pressure on the guide plate is released, the spring's rebound force will push the lower end of the silicone sleeve and the pressure plate upward, so that the guide plate returns to its position before being pressed down. The spring design saves one task and saves manpower.

[0014] The single upward-extending guide plate, due to its small contact area, can cause hand pain under prolonged pressure. To increase the contact area and for aesthetic reasons, a button is incorporated, fitted onto the upper part of the guide plate. This makes it easier to achieve the vacuuming effect with each press, reaching a maximum pressure of -35 kPa. Considering the feel of the pressure, the final pressure range was set at -12 to -15 kPa, significantly lower than the commonly available -1 to -5 kPa, resulting in better negative pressure preservation.

[0015] The ease of disassembly and cleaning of the air pump is crucial to food hygiene and safety. Therefore, each component of the air pump must be easily disassembled and cleaned individually. First, there is the bracket horizontally placed on the air intake column. The bracket has buckles on its edge, which are inserted into the slots on the housing to fix its position. To facilitate installation and disassembly, there is a vertical groove on the edge of the slot that extends upward and passes through the opening at the top of the housing. When assembling the bracket, the buckles are inserted downward along the vertical groove to the bottom, and then the bracket is rotated axially to make the buckles insert into the slots to fix the bracket. Even better, there are two sets of symmetrical buckles and slots, which can play a more stable role.

[0016] Because the guide plate needs to extend upwards and exceed the support, its position needs to be offset from the latches, while also allowing space for axial rotation of the latches. To ensure balanced downward pressure when the button is pressed down, two symmetrical sets of guide plates are designed. These two sets of guide plates, two sets of latches, and two sets of space for latch rotation divide the circular cross-section into six equal parts, fully utilizing the internal structure and avoiding interference between different components. To facilitate the assembly of the pressure plate and prevent misalignment during subsequent use that could interfere with latch disassembly, guide openings are provided on the edge of the pressure plate, and guide parts are provided inside the housing. Therefore, the pressure plate is restricted by the guide parts during insertion into the housing, allowing it to be inserted downwards in a specific direction. This ensures that the pressure plate does not rotate axially during longitudinal movement, and also ensures that the guide plate does not interfere with the assembly and disassembly of the latches due to axial rotation.

[0017] Therefore, after the bracket is rotated and disassembled, the silicone sleeve will also detach from the air intake column during the process of pulling the bracket upwards, and the pressure plate can also be lifted directly upwards to achieve separation. Since the silicone sleeve is fitted on the bottom of the bracket, and silicone itself is a soft and deformable material, the silicone sleeve can also be directly removed. The first one-way valve and the second one-way valve can be set as an umbrella-shaped structure, which can also be easily removed. Therefore, the entire structure of the air pump can be disassembled, thereby achieving individual cleaning of each component, ensuring that there is no residue of odor or steam, and guaranteeing food hygiene and safety during use.

[0018] Furthermore, the housing is provided with vertically distributed embedding grooves, and the embedding hook on the embedding plate is engaged in the embedding grooves; the bottom of the embedding groove is provided with a horizontally placed fixing groove, and the fixing groove is connected to the embedding groove to form an L-shaped groove structure, and the embedding hook is movably connected to the fixing groove and the embedding groove.

[0019] Compared with the prior art, the advantages of this utility model are as follows: through the linkage of the guide plate and the silicone sleeve, the position of the bracket is fixed and stable, and the cavity is compressed and expanded manually to extract the air from the food storage box. At the same time, the spring saves one work and saves the manpower of pulling up. All detachable components can be easily cleaned and assembled, ensuring the hygiene and safety of food under the use of this air pump. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0021] Figure 1 This is a perspective view of Embodiment 1 of the present invention;

[0022] Figure 2 This is a top-view explosion diagram of Embodiment 1 of this utility model;

[0023] Figure 3 For the present utility model Figure 2 A magnified view of part A;

[0024] Figure 4 For the present utility model Figure 2 A magnified view of section B;

[0025] Figure 5 This is a bottom-view explosion diagram of Embodiment 1 of this utility model;

[0026] Figure 6 This is a top view of Embodiment 1 of the present invention;

[0027] Figure 7 For the present utility model Figure 6 CC cross-sectional view and schematic diagram of air entering the receiving cavity from the intake column;

[0028] Figure 8 For the present utility model Figure 6 CC cross-sectional view and schematic diagram of air being discharged from the receiving cavity into the through hole and extracted;

[0029] Figure 9 This is a top perspective view of the housing in Embodiment 1 of this utility model;

[0030] Figure 10 This is a bottom-view explosion diagram of Embodiment 2 of this utility model;

[0031] Figure 11This is a top view of Embodiment 2 of the present invention;

[0032] Figure 12 For the present utility model Figure 11 DD sectional view.

[0033] The components are as follows: 1. Housing; 11. Intake column; 12. First one-way valve; 13. Slot; 14. Vertical slot; 15. Guide part; 16. Embedded slot; 17. Fixing slot; 2. Air extraction component; 21. Bracket; 211. Buckle; 22. Silicone sleeve; 23. Receiving cavity; 24. Through hole; 25. Second one-way valve; 3. Pressure plate; 31. Guide port; 32. Guide plate; 4. Spring; 5. Button; 51. Embedded plate; 52. Embedded hook. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] The specific embodiments of this utility model will now be described with reference to the accompanying drawings:

[0036] Example 1, such as Figure 1-9 As shown, a press-type air pump for a food container includes a housing 1 and an air extraction component 2. The bottom of the housing 1 is provided with an upwardly extending air intake column 11, which is hollow inside and communicates with the lower end face of the housing 1. The upper opening of the air intake column 11 is provided with a first one-way valve 12 that can only expel air upwards. The air extraction component 2 is fitted onto the air intake column 11 and forms a closed receiving cavity 23 therein. The air extraction component 2 is provided with a through hole 24, and a second one-way valve 25 that can only expel air outwards is provided in the through hole 24. When the receiving cavity 23 expands, air is drawn in from the air intake column 11, and when the receiving cavity 23 is compressed, air is blown out from the through hole 24.

[0037] The air extraction component 2 consists of a bracket 21 and a silicone sleeve 22. The bracket 21 is horizontally placed and connected inside the housing 1. The edge of the bracket 21 is provided with a buckle 211. The bracket 21 is detachably connected to the slot 13 on the housing 1 through the buckle 211. The bracket 21 is located above the air intake column 11. The through hole 24 is provided on the bracket 21. The silicone sleeve 22 is a bowl-shaped structure that runs vertically through the air intake column 11 and opens upward. The upper end of the silicone sleeve 22 is detachably connected to the lower end of the bracket 21. The lower end of the silicone sleeve 22 fits onto the outer wall of the air intake column 11. The receiving cavity 23 is formed by the bracket 21, the silicone sleeve 22, the air intake column 11, and the first one-way valve 12. When the lower end of the silicone sleeve 22 moves upward along the outer wall of the air intake column 11, it compresses the receiving cavity 23. When it moves downward, it expands the receiving cavity 23.

[0038] It also includes a pressure plate 3, which is detachably connected to the lower end of the silicone sleeve 22; the edge of the pressure plate 3 is provided with a guide opening 31, and the housing 1 is provided with a guide part 15. During the process of the pressure plate 3 being embedded into the housing 1, the guide opening 31 cooperates with the guide part 15.

[0039] It also includes a spring 4, which is fitted onto the outer wall of the air intake column 11. The upper end of the spring 4 abuts against the lower end of the silicone sleeve 22, and the lower end of the spring 4 abuts against the bottom of the housing 1.

[0040] It also includes a button 5, and the edge of the pressure plate 3 is provided with an upwardly extending guide plate 32, and the bottom of the button 5 can abut against the upper end of the guide plate 32; characterized in that: the edge of the button 5 is provided with a downwardly extending embedded plate 51, and the embedded plate 51 is located outside the outer wall of the guide plate 32.

[0041] Furthermore, the housing 1 is provided with vertically distributed embedding grooves 16, and the embedding hooks 52 on the embedding plate 51 are fitted into the embedding grooves 16; the bottom of the embedding groove 16 is provided with a horizontally placed fixing groove 17, the fixing groove 17 is connected to the embedding groove 16 and forms an L-shaped groove structure, and the embedding hooks 52 are movably connected to the fixing groove 17 and the embedding groove 16.

[0042] Description of the working principle of this utility model:

[0043] The press-type air pump for food containers using this structure can have its housing 1 integrally molded onto the lid of the food storage container, or it can be installed onto the lid of the food storage container by assembly. The bottom of the housing 1 has an upward-extending hollow air intake column 11. A first one-way valve 12 on the air intake column 11 ensures that air can only exit upwards from the lower end of the housing 1 along the air intake column 11, thus preventing air from entering from the outside when pumping out air from inside the food storage container. To achieve outward pumping, a fitting is made on the air intake column 11... The air extraction component 2 has a closed receiving cavity 23 inside. The air extraction component 2 has a through hole 24 that communicates with the receiving cavity 23 and is equipped with a second one-way valve 25, so that the air in the receiving cavity 23 can only be extracted from the inside to the outside through the through hole 24. Therefore, when the receiving cavity 23 expands, the air in the food storage box is drawn into the receiving cavity 23 by the air inlet column 11. When the receiving cavity 23 is compressed, the air in the receiving cavity 23 is blown out by the through hole 24, so as to realize the function of continuously pumping air out of the food storage box and forming a negative pressure inside the food storage box.

[0044] However, compressing the cavity 23 is easy; simply pressing the suction component 2 by hand deforms it and compresses the air inside. But expanding the cavity 23 requires external force. Therefore, the suction component 2 is designed to consist of a support 21 and a silicone sleeve 22. The support 21 is horizontally placed inside the housing 1 and remains fixed, while the silicone sleeve 22 is cup-shaped and mounted upwards on the lower end of the support 21. This results in the cavity 23 being enclosed by the support 21, the silicone sleeve 22, the air intake column 11, and the first one-way valve 12. The lower end of the silicone sleeve 22 has a downward-opening lip structure, fitting and abutting against the outer wall of the air intake column 11. The lower end of the silicone sleeve 22 is positioned along the air intake... When the outer wall of the air column 11 moves upward, it compresses the receiving cavity 23; when it moves downward, it expands the receiving cavity 23. A pressure plate 3 is provided at the lower end of the silicone sleeve 22. The guide plate 32 on the pressure plate 3 extends upward and is higher than the bracket 21. Therefore, when the guide plate 32 is pressed downward by hand, it will drive the lower end of the silicone sleeve 22 to move downward and expand the receiving cavity 23, so that the air in the food storage box enters the receiving cavity 23 along the air inlet column 11. When the guide plate 32 is pulled upward by hand, it will drive the lower end of the silicone sleeve 22 to move upward and compress the receiving cavity 23, and draw the air in the receiving cavity 23 out through the through hole 24. The reciprocating operation can increase the negative pressure in the food storage box.

[0045] However, manually pressing down on the guide plate 32 and pulling it upwards to perform the suction operation is equivalent to doing two tasks, which is very laborious. Therefore, a spring 4 is added inside. The spring 4 is fitted onto the outer wall of the air intake column 11. The upper end of the spring 4 abuts against the lower end of the silicone sleeve 22, and the lower end abuts against the bottom of the housing 1. Therefore, when the guide plate 32 is pressed down, the spring 4 will be compressed. When the downward pressure on the guide plate 32 is released, the rebound force of the spring 4 will push the lower end of the silicone sleeve 22 and the pressure plate 3 upwards, so that the guide plate 32 returns to the position before it was pressed down. The setting of the spring 4 can save one task and save manpower.

[0046] The single upward-extending guide plate 32, due to its small contact area, can cause hand pain under prolonged pressure. To increase the contact area and for aesthetic reasons, a button 5 is provided. The button 5 is fitted onto the upper end of the guide plate 32, making it easier to achieve the vacuuming effect with each press. The limit value can reach -35 kPa. Considering the pressing feel, the final value is set at -12 to -15 kPa, which is much lower than the commonly used -1 to -5 kPa on the market, resulting in a better negative pressure preservation effect.

[0047] The ease of disassembly and cleaning of the air pump is crucial to food hygiene and safety. Therefore, each component of the air pump must be easily disassembled and cleaned individually. First, there is the bracket 21 horizontally placed on the air intake column 11. A buckle 211 is provided on the edge of the bracket 21. The buckle 211 is inserted into the slot 13 on the housing 1 to fix its position. In order to facilitate installation and disassembly, a vertical groove 14 is provided on the edge of the slot 13, extending upward and penetrating the opening at the upper end of the housing 1. When assembling the bracket 21, the buckle 211 is inserted downward along the vertical groove 14 to the bottom. Then, the bracket 21 is rotated axially to make the buckle 211 inserted into the slot 13 to fix the bracket 21. More preferably, the buckle 211 and the slot 13 are provided in two symmetrical sets, which can play a more stable role.

[0048] Since the guide plate 32 needs to extend upwards and exceed the bracket 21, its position needs to be offset from the buckle 211, and space must be left for the buckle 211 to rotate axially. To ensure a balanced downward pressure when the button 5 is pressed down, the guide plate 32 is designed with two symmetrical sets: two sets of guide plates 32, two sets of buckles 211, and two sets of space for the buckles 211 to rotate. This divides the circular cross-section into six equal parts, making full use of the internal structure and avoiding interference between different structures. To facilitate the assembly of the pressure plate 3 and to prevent misalignment during subsequent use that could interfere with the disassembly of the buckle 211, a guide opening 31 is provided on the edge of the pressure plate 3, and a guide portion 15 is provided inside the housing 1. Therefore, during the insertion of the pressure plate 3 into the housing 1, it is restricted by the guide portion 15 and can only be inserted downwards in a specific direction. This ensures that the pressure plate 3 does not rotate axially during longitudinal movement and that the guide plate 32 does not interfere with the assembly and disassembly of the buckle 211 due to axial rotation.

[0049] Therefore, after the bracket 21 is rotated and disassembled, the silicone sleeve 22 will also detach from the air intake column 11 during the process of pulling the bracket 21 upward. The pressure plate 3 can also be lifted upward to achieve disassembly. Since the silicone sleeve 22 is fitted on the bottom of the bracket 21, and silicone itself is a soft and deformable material, the silicone sleeve 22 can also be directly disassembled. The first one-way valve 12 and the second one-way valve 25 can be set as an umbrella-shaped structure, which can also be easily disassembled. Therefore, the entire structure of the air pump can be disassembled, thereby realizing the individual cleaning of each component, ensuring that there is no odor or steam residue, and ensuring food hygiene and safety during use.

[0050] The button 5 is designed to increase the contact surface and save manpower. However, if the button 5 cannot be connected to the housing 1, it is easy to fall when the food container is moved. Therefore, an embedding hook 52 is provided on the embedding plate 51 of the button 5. The embedding groove 16 on the housing 1 is not connected to the upper opening of the housing 1. Therefore, by pressing the embedding plate 51 radially to deform it, the embedding hook 52 is embedded in the embedding groove 16. Therefore, when the button 5 is pressed down, the button 5 can move up and down along the vertical direction of the embedding groove 16 without detaching from the housing 1. When disassembly is required, the embedding plate 51 is pressed radially to deform it, and the embedding hook 52 can then detach from the housing 1 for easy disassembly. When button 5 is not pressed, it will be pushed upwards by the elastic force of spring 4. The upward protrusion structure is inconvenient for carrying and stacking food containers. Therefore, a horizontal fixing groove 17 is provided at the bottom of the embedding groove 16, so that the fixing groove 17 and the embedding groove 16 inside the housing 1 form an L-shaped structure. Therefore, after button 5 is pressed to the bottom, button 5 can be locked inside the housing 1 by axially rotating button 5, ensuring the flatness of the upper surface of the housing 1, thereby facilitating the stacking and carrying of multiple food containers.

[0051] Example 2, as Figure 10-12 As shown, the embedding groove 16 and the fixing groove 17 can also be set on the outside of the housing 1. Their function is that when the lid of the food storage box has a hole for the housing 1 to pass through, the housing 1 can be set as a whole and protrude above the lid. Pressing the button 5 can also achieve the same effect of drawing out air, thus improving its applicability.

[0052] The beneficial effects of this utility model are as follows: through the upper and lower linkage of the guide plate 32 and the silicone sleeve 22, the position of the bracket 21 is fixed and stable, and the air in the food storage box is extracted by manually compressing and expanding the receiving cavity 23. At the same time, the spring 4 saves one work and saves the manpower of pulling up. All detachable components can be easily cleaned and assembled, ensuring the hygiene and safety of food under the use of this air pump.

[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A push-pull air pump for a food container, characterized by: Includes the housing and the extraction components; The bottom of the housing is provided with an upwardly extending air intake column. The air intake column is hollow inside and connects to the lower end face of the housing. The upper opening of the air intake column is provided with a first one-way valve that can only release air upwards. The air extraction component is fitted onto the air intake column and forms a closed receiving cavity therein. The air extraction component is provided with a through hole, and a second one-way valve that can only release air outward is provided in the through hole. When the cavity expands, air is drawn in through the air intake column; when the cavity compresses, air is blown out through the through hole.

2. The push air pump for a food container according to claim 1, characterized in that: The air extraction component consists of a bracket and a silicone sleeve; The bracket is placed horizontally and connected inside the housing. The bracket is located above the air intake column, and the through hole is provided on the bracket. The silicone sleeve is a bowl-shaped structure that runs vertically through the top and bottom and opens upwards. The upper end of the silicone sleeve is detachably connected to the lower end of the bracket, and the lower end of the silicone sleeve fits onto the outer wall of the air intake column. The receiving cavity is formed by the bracket, the silicone sleeve, the air intake column, and the first one-way valve. When the lower end of the silicone sleeve moves upward along the outer wall of the air intake column, it compresses the receiving cavity; when it moves downward, it expands the receiving cavity.

3. The push air pump for a food container according to claim 2, characterized in that: The bracket has a buckle on its edge, and the bracket can be detachably connected to the slot on the housing through the buckle.

4. The push air pump for a food container according to claim 3, characterized in that: It also includes a pressure plate, which is detachably connected to the lower end of the silicone sleeve.

5. The push air pump for a food container according to claim 4, characterized in that: The pressure plate has a guide opening on its edge, and the housing has a guide part inside. During the process of the pressure plate being embedded into the housing, the guide opening and the guide part cooperate with each other.

6. The push air pump for a food container according to claim 5, wherein: It also includes a spring, which is fitted onto the outer wall of the intake column, with the upper end of the spring abutting against the lower end of the silicone sleeve and the lower end of the spring abutting against the bottom of the housing.

7. The push air pump for a food container according to claim 6, characterized in that: It also includes a button, and the edge of the pressure plate is provided with an upwardly extending guide plate, and the bottom of the button can abut against and connect to the upper end of the guide plate.

8. The push air pump for a food container according to claim 7, characterized in that: The edge of the button is provided with a downwardly extending embedded plate, which is located outside the outer wall of the guide plate.

9. The press-type air pump for a food container according to claim 8, characterized in that: The housing is provided with vertically distributed embedding grooves, and the embedding hooks on the embedding plate are engaged in the embedding grooves.

10. The push air pump for a food container of claim 9, wherein: The bottom of the embedding groove is provided with a horizontal fixing groove, which is connected to the embedding groove to form an L-shaped groove structure. The embedding hook is movably connected to the fixing groove and the embedding groove.

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