Manual air pump

Abstract

The utility model discloses a manual air pump which comprises an outer sleeve, an inner sleeve, a handle, an early warning assembly, a filtering assembly and an air suction port assembly. The inner sleeve is slidably arranged in the outer sleeve; the early warning assembly is installed at one end of the inner sleeve and extends into the inner sleeve. The filtering assembly is detachably mounted in the outer sleeve; the air suction port assembly is detachably installed at the end, away from the outer sleeve, of the filtering assembly. The handle is connected with the other end of the inner sleeve. The device can adapt to containers of various specifications, has a negative pressure early warning function and is easy to clean.

Description

Technical Field

[0001] This utility model relates to the field of vacuum equipment technology, and in particular to a manual air pump. Background Technology

[0002] Currently available manual air pumps have several problems during use. The suction port of existing manual air pumps is usually a fixed, single-sized type, which cannot be adapted to different types of food storage containers, thus limiting their practicality. During the pumping process, there is a lack of a negative pressure warning mechanism, making it impossible for users to accurately judge the negative pressure status inside the container, easily leading to food damage or incomplete pumping. Furthermore, during use, food residue and moisture can easily enter the pump body, affecting pumping efficiency and promoting bacterial growth. The complex pump structure also makes disassembly and cleaning difficult, posing hygiene risks. Additionally, existing manual air pumps have high friction between the inner and outer cylinders, resulting in a short lifespan and requiring considerable effort to operate.

[0003] Therefore, there is an urgent need to develop a manual air pump to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a manual air pump that can be adapted to containers of various sizes, has a negative pressure warning function, and is easy to clean.

[0005] To solve the above-mentioned technical problems, this utility model provides a manual air pump, including an outer sleeve, an inner sleeve, a warning component, a filter component, and an air intake component;

[0006] The inner sleeve is slidably disposed inside the outer sleeve; the warning component is installed at one end of the inner sleeve and extends into the inner sleeve; the filter component is detachably installed inside the outer sleeve; the air intake component is detachably installed at the end of the filter component away from the outer sleeve.

[0007] Furthermore, the warning component includes a sound generator chamber and a sound generator; one end of the sound generator chamber is installed at one end of the inner sleeve, and the other end extends into the inner sleeve; the sound generator is disposed at one end of the sound generator chamber and extends into the sound generator chamber; the sound generator chamber is made of silicone material, and the other end of the sound generator chamber has an opening for allowing air to enter the sound generator when a preset negative pressure value is reached.

[0008] Furthermore, one end of the inner sleeve and one end of the outer sleeve have a predetermined distance to form a mounting groove; the filter assembly is snap-fitted or threaded into the mounting groove.

[0009] Furthermore, the end of the filter assembly away from the inner sleeve is provided with a groove, and the air intake assembly is interference-fitted with the groove.

[0010] Furthermore, the air intake assembly includes a large-diameter air intake, a medium-sized air intake, and a small-diameter air intake; the inner wall of the large-diameter air intake is provided with a plurality of protrusions arranged in a ring array.

[0011] Furthermore, the air intake assembly is made of silicone, elastic material, or rubber.

[0012] Furthermore, a first sealing ring and a shock-absorbing ring are provided between the inner sleeve and the outer sleeve.

[0013] Furthermore, the filter assembly is made of transparent material and has a second sealing ring between it and the outer sleeve.

[0014] Furthermore, the outer surface of the outer sleeve is provided with Roman columns and / or diamond patterns.

[0015] Furthermore, it also includes a handle, which is connected to the other end of the inner sleeve.

[0016] Through the above technical solution, this utility model has the following beneficial effects:

[0017] By setting up a detachable air intake assembly and filter assembly structure, it is possible to adapt to containers of different sizes. The filter assembly can effectively prevent food residue and moisture from entering the pump body, making it easy to disassemble and clean, thus solving the problems of traditional manual air pumps being difficult to clean and having poor compatibility. By setting a warning assembly at the end of the inner sleeve, an alarm is triggered when a preset negative pressure value is reached, preventing excessive air extraction that could damage the container.

[0018] In addition, by setting a sealing ring and a shock-absorbing ring between the inner and outer sleeves, the sealing performance can be improved and the frictional resistance can be reduced; the use of transparent filter components makes it easy to observe the collection of impurities. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a manual air pump in one embodiment of the present invention;

[0020] Figure 2 This is an assembly diagram of the filter assembly and outer sleeve in a manual air pump according to one embodiment of the present invention;

[0021] Figure 3 This is an exploded view of a manual air pump in one embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the filter assembly in a manual air pump according to one embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the large-diameter air intake port in a manual air pump according to one embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the medium-sized air intake in a manual air pump according to one embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the small-diameter air intake port of a manual air pump in one embodiment of the present invention;

[0026] Figure 8 This is an assembly diagram of the warning component and the outer sleeve in a manual air pump according to one embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the early warning component in a manual air pump according to one embodiment of the present invention;

[0028] Figure 10 This is a cross-sectional view of the inner sleeve and the warning component in a manual air pump according to one embodiment of the present invention.

[0029] In the diagram, 1. Outer sleeve; 2. Inner sleeve; 3. Handle; 4. Filter assembly; 41. Slot; 5. Intake assembly; 51. Large-diameter intake port; 510. Upper port; 511. Lower port; 512. Protrusion; 52. Medium-sized intake port; 520. Upper cylindrical section; 521. Lower conical section; 53. Small-diameter intake port; 530. Trumpet-shaped section; 531. Thin tube section; 6. Warning assembly; 61. Sound generator chamber; 610. Circular concave structure; 611. Opening; 62. Sound generator; 7. First sealing ring; 8. Second sealing ring; 9. Shock-absorbing ring; 10. Mounting groove. Detailed Implementation

[0030] The present invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the scope of the invention.

[0031] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0032] like Figures 1-3 As shown in the figure, this utility model embodiment proposes a convenient and practical manual air pump, including an outer sleeve 1, an inner sleeve 2, a warning component 6, a filter component 4, and an air intake component 5.

[0033] Specifically, the inner sleeve 2 is slidably disposed within the outer sleeve 1, and the warning component 6 is installed at one end of the inner sleeve 2 and extends into the inner sleeve 2. The filter component 4 is detachably installed within the outer sleeve 1; the air intake component 5 is detachably installed at the end of the filter component 4 away from the outer sleeve 1 via a snap-fit ​​or threaded connection. This structural design ensures a secure connection between the components and facilitates disassembly and cleaning.

[0034] For the best options, please continue to refer to them. Figure 3 As shown, a first sealing ring 7 and a shock-absorbing ring 9 are provided between the inner sleeve 2 and the outer sleeve 1; a second sealing ring 8 is provided between the filter assembly 4 and the outer sleeve 1 (i.e., the mounting groove 10). In a specific example, the sealing ring is made of nitrile rubber, and the shock-absorbing ring 9 can be made of polyurethane. This combined structure can improve the airtightness between the inner and outer sleeves 1. At the same time, the setting of the shock-absorbing ring 9 can not only reduce the mutual impact and wear between the inner and outer sleeves 1, but also reduce operating noise. In addition, it can also play a buffering role when the inner sleeve 2 rebounds quickly, preventing the user from being pinched and injured during use, thereby improving the safety of use. The setting of the second sealing ring 8 enhances the sealing effect between the filter assembly 4 and the mounting groove 10, preventing gas leakage during the air extraction process.

[0035] In this embodiment, the outer surface of the outer sleeve 1 is provided with Roman column and / or diamond pattern. This improves the grip and aesthetics. Those skilled in the art will understand that the outer surface of the outer sleeve 1 can also be configured with other patterns according to actual needs.

[0036] Preferably, this embodiment also includes a handle 3, which is fixedly connected to the other end of the inner sleeve 2. In a specific example, the handle 3 is made of PP material and has an anti-slip texture on its surface. This embodiment can improve operating comfort.

[0037] In one embodiment, such as Figure 4 As shown, the filter assembly 4 is made of a transparent material, such as transparent ABS or transparent PC. The use of transparent material enhances visibility during use, making it easier to observe the collection of impurities.

[0038] In one specific embodiment, the end of the filter assembly 4 away from the inner sleeve 2 is provided with a groove 41, and the air intake assembly 5 is interference-fitted with the groove 41, thereby facilitating the disassembly of the air intake assembly 5.

[0039] In this embodiment, as Figures 5-7As shown, the air intake assembly 5 includes a large-diameter air intake 51, a medium-sized air intake 52, and a small-diameter air intake 53. Specifically, the large-diameter air intake 51 is used to fit vacuum grain bags, vacuum food storage boxes, and vacuum food storage jars. The inner wall of the large-diameter air intake 51 has multiple annularly arrayed protrusions 512, which can lock onto the lower edge of the vacuum grain bag lid, thus preventing it from coming loose and failing to vacuum when the vacuum grain bag is being evacuated. The medium-sized air intake 52 is used to fit vacuum food storage boxes and vacuum food storage jars, and the small-diameter air intake 53 is used to fit vacuum food storage bags and vacuum wine stoppers. In this embodiment, the large-diameter air intake 51, medium-sized air intake 52, and small-diameter air intake 53 can be freely interchanged according to different vacuum food storage containers such as vacuum grain bags, vacuum food storage boxes, vacuum food storage jars, vacuum food storage bags, and vacuum wine stoppers, thereby achieving the vacuum preservation function of various vacuum food storage containers and enhancing the versatility of the product.

[0040] In a specific example, the large-diameter intake port 51 is, for example, a frustum-shaped structure, with the diameter of the upper port 510 being larger than the diameter of the lower port 511, and the inner wall having multiple annularly arranged protrusions 512. The protrusions 512 may be hemispherical, evenly distributed circumferentially along the inner wall, with each annular array containing multiple protrusions 512, arranged in multiple rings. The outer wall of the large-diameter intake port 51 may also be provided with reinforcing ribs to improve structural strength.

[0041] In one specific example, the medium-sized air intake 52 adopts a stepped structure, including an upper cylindrical section 520 and a lower conical section 521. The upper end of the lower conical section 521 is connected to the upper cylindrical section 520, the inner diameter of the upper cylindrical section 520 is larger than the inner diameter of the lower conical section 521, and the height of the upper cylindrical section 520 is greater than the height of the lower conical section 521. This structural design enhances the sealing performance with the air vent valve of the food storage container.

[0042] In one specific example, the small-diameter intake port 53 may adopt a trumpet-shaped structure, including a trumpet-shaped section 530 and a thin tube section 531. Specifically, the upper inner diameter of the trumpet-shaped section 530 is larger than the lower inner diameter, and the height of the trumpet-shaped section 530 is greater than the height of the thin tube section 531; the inner diameter of the thin tube section 531 is smaller than the lower inner diameter of the trumpet-shaped section 530.

[0043] In terms of overall dimensions, the inner diameter of the large-diameter air intake 51 is larger than that of the medium-sized air intake 52, and the inner diameter of the medium-sized air intake 52 is larger than that of the small-diameter air intake 53. The outer edge of all three sizes of air intakes is provided with a protruding structure that mates with the slot 41, the height of which is less than the depth of the slot 41.

[0044] As will be known to those skilled in the art, the above-described structural dimensions can be appropriately adjusted according to actual application requirements, and other embodiments besides this one are also possible. This structural design can improve the versatility and sealing effect of the air intake.

[0045] Preferably, the air intake assembly 5 can be made of food-grade silicone, TPE elastic material, or natural rubber. The selection of these materials improves the safety and service life of the product.

[0046] Preferred, such as Figure 8 As shown, one end of the inner sleeve 2 and one end of the outer sleeve 1 have a predetermined distance to form a mounting groove 10; the filter assembly 4 is snap-fitted or threaded into the mounting groove 10. This connection method improves the ease of assembly and disassembly.

[0047] In one embodiment, the inner wall of the outer sleeve 1 is provided with a limiting flange, and the outer wall of the inner sleeve 2 is provided with a limiting portion that mates with the limiting flange. This structural design enhances the motion stability between the inner and outer sleeves 1.

[0048] In one embodiment, such as Figure 9 and Figure 10 As shown, the warning component 6 includes a sound generator chamber 61 and a sound generator 62. Specifically, one end of the sound generator chamber 61 is installed at one end of the inner sleeve 2, and the other end extends into the inner sleeve 2. The sound generator 62 is disposed at one end of the sound generator chamber 61 and extends into the sound generator chamber 61. The sound generator chamber 61 is made of silicone material, and the other end of the sound generator chamber 61 has an opening 611 for allowing air to enter the sound generator 62 when a preset negative pressure value is reached. Those skilled in the art will understand that the size of the opening 611 can be set according to actual needs, and other embodiments besides this one are also possible. The design of this warning component 6 can improve the controllability of the air extraction process.

[0049] In one specific example, the other end of the sound generator chamber 61 is provided with a circular recessed platform structure 610, and the opening 611 is located at the center of the circular recessed platform structure 610. The diameter of the circular recessed platform structure 610 is larger than the total length of the opening 611. Specifically, the diameter of the circular recessed platform structure 610 can be set according to actual needs, and the edge of the circular recessed platform can also be chamfered. The opening 611 can be a slit, and the length and width of the slit can be set according to actual needs. This design of the circular recessed platform structure 610 improves the structural strength of the sound generator chamber 61 while allowing for smoother airflow.

[0050] In this embodiment, the sound-generating principle of the warning component 6 is as follows: When the air pump is used for evacuation, the internal space of the filter component 4 forms a sealed chamber, and the opening 611 of the sound generator chamber 61 is in a closed state. The thickness, shape, and opening width of the top of the sound generator chamber 61 determine the negative pressure value at which the sealed chamber inside the filter component 4 opens. Thus, during continuous evacuation, when the negative pressure value inside the sealed chamber of the filter component 4 reaches the critical point of the closing force at the opening 611 of the sound generator chamber 61, the opening 611 of the sound generator chamber 61 opens, and the airflow enters the sound generator 62 through the opening 611. When the airflow passes through the sound generator 62, the reed inside the sound generator 62 vibrates elastically and interacts with the airflow to start emitting a sound, indicating that the preset negative pressure value has been reached inside the container and the operation can be stopped.

[0051] Preferred, such as Figure 10 As shown, the end of the inner sleeve 2 near the warning component 6 is designed with a concave arc shape. Specifically, the end of the inner sleeve 2 is recessed inward to form an arc surface. This structural design prevents the warning component 6 installed at this location from protruding excessively, thus making the overall structure more compact and reasonable. This concave arc shape not only ensures the normal installation and operation of the warning component 6, but also avoids the inconvenience caused by the excessive exposure of the warning component 6.

[0052] In this embodiment, when using it, select the appropriate air intake according to the specifications of the food storage container to be vacuumed (i.e., select a large-diameter air intake 51, a medium-sized air intake 52, or a small-diameter air intake 53), install the selected air intake in the slot 41 of the filter assembly 4, and then connect the air intake to the vent valve on the food storage container.

[0053] During the suction process, the user holds the handle 3 and moves the inner sleeve 2 up and down repeatedly. When the inner sleeve 2 is pulled upwards, a sealed cavity is formed between the inner sleeve 2 and the outer sleeve 1. The upward movement of the inner sleeve 2 increases the volume of this sealed cavity, generating negative pressure, which draws air from inside the food storage container into the outer sleeve 1 through the suction port. When the inner sleeve 2 is pressed downwards, the air inside the outer sleeve 1 is expelled. Through this reciprocating operation, the air pressure inside the food storage container is gradually reduced.

[0054] When the negative pressure inside the food storage container reaches the preset value, due to the pressure difference between the inside and outside of the container reaching a certain level, the external atmospheric pressure will force air to enter the sound generator chamber 61 through the opening 611, and then into the sound generator 62. The sound generator 62 will then emit a warning sound to remind the user that the preset negative pressure value has been reached. During the vacuuming process, moisture and residue in the food will be blocked by the filter component 4 inside the filter component 4, preventing impurities from entering the vacuum pump.

[0055] After use, the filter assembly 4 can be removed for cleaning to remove collected moisture and residue, maintaining the product's cleanliness and hygiene. This structural design is not only simple and intuitive to operate, but also avoids excessive air extraction through audible prompts, while providing excellent filtration performance.

[0056] In summary, the manual air pump proposed in this utility model has the following advantages:

[0057] By setting up a detachable air intake assembly and filter assembly structure, it is possible to adapt to containers of different sizes. The filter assembly can effectively prevent food residue and moisture from entering the pump body, making it easy to disassemble and clean, thus solving the problems of traditional manual air pumps being difficult to clean and having poor compatibility. By setting a warning assembly at the end of the inner sleeve, an alarm is triggered when a preset negative pressure value is reached, preventing excessive air extraction that could damage the container.

[0058] In addition, by setting a sealing ring and a shock-absorbing ring between the inner and outer sleeves, the sealing performance can be improved and the frictional resistance can be reduced; the use of transparent filter components makes it easy to observe the collection of impurities.

[0059] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A hand operated suction pump characterised in that, The device comprises an outer sleeve, an inner sleeve, a pre-warning component, a filtering component and an air inlet component. The inner sleeve is slidingly arranged in the outer sleeve; the pre-warning component is installed at one end of the inner sleeve and extends into the inner sleeve; the filtering component is detachably installed in the outer sleeve; and the air inlet component is detachably installed at an end of the filtering component away from the outer sleeve.

2. A manual suction pump as claimed in claim 1, characterised in that, The pre-warning component comprises a sounder cartridge and a sounder; one end of the sounder cartridge is installed at one end of the inner sleeve, and the other end extends into the inner sleeve; the sounder is arranged at one end of the sounder cartridge and extends into the sounder cartridge; the sounder cartridge is made of silica gel material, and the other end of the sounder cartridge is provided with an opening for allowing air to enter the sounder when a preset negative pressure value is reached.

3. The manual suction pump of claim 1, wherein, One end of the inner sleeve and one end of the outer sleeve have a predetermined spacing to form a mounting groove; the filtering component is clamped or screw-connected in the mounting groove.

4. The manual suction pump of claim 1, wherein, An end of the filtering component away from the inner sleeve is provided with a clamping groove, and the air inlet component is interference-fitted with the clamping groove.

5. The manual suction pump of claim 1, wherein, The air inlet component comprises a large-diameter air inlet, a medium-diameter air inlet and a small-diameter air inlet; the inner wall of the large-diameter air inlet is provided with a plurality of annularly arrayed convex points.

6. The manual suction pump of claim 1, wherein, The air inlet component is made of silica gel material, elastic material or rubber material.

7. The manual suction pump of claim 1, wherein, A first sealing ring and a shock-absorbing ring are arranged between the inner sleeve and the outer sleeve.

8. The manual suction pump of claim 1, wherein, The filtering component is made of transparent material and is provided with a second sealing ring between the filtering component and the outer sleeve.

9. The manual suction pump of claim 1, wherein, The outer surface of the outer sleeve is provided with Roman columns and / or diamond patterns.

10. The manual suction pump of claim 1, wherein, A handle is further arranged, and the handle is connected to the other end of the inner sleeve.

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