Vacuum tank and vacuum tank components

Abstract

The present invention discloses a vacuum tank and a vacuum tank assembly, the vacuum tank comprises a tank body, a tank cover, a handle and a first sealing ring arranged between the tank body and the tank cover, the tank cover is provided with an air extraction hole, the handle passes through the air extraction hole and an air extraction channel is left between the handle and the inner side wall of the air extraction hole, the upper part of the handle is provided with a hand-held portion, the lower part of the handle is provided with a lifting protrusion for lifting the tank cover, and the handle is provided with a sealing soft plastic film capable of closing the upper port of the air extraction channel; the vacuum tank assembly comprises a vacuum extractor and the above-mentioned vacuum tank. The vacuum tank of the present invention has a handle on the tank cover that has the functions of both an air extraction check valve and a tank cover handle, has multiple functions, is conducive to streamlining the structure of the tank cover, and reduces production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum tanks, and in particular to a vacuum tank and a vacuum tank assembly. Background Art

[0002] Vacuum tanks, also called vacuum storage tanks, are used to store items that are susceptible to moisture, oxidation, and mildew. The sealing material is generally made of high-performance natural silica gel, which can ensure that the vacuum tank maintains a high vacuum state for a long time, thereby playing the role of anti-oxidation, moisture-proof, moth-proof, mildew-proof, and preservation. The method of using a vacuum tank is: install the vacuum extractor on the tank cover of the vacuum tank, align it with the air extraction port on the tank cover, seal it with the sealing ring, and then start the vacuum pump in the vacuum extractor to extract the air in the tank through the one-way valve at the air extraction port to form a vacuum state.

[0003] In traditional vacuum tanks, the exhaust port and the handle on the tank cover are separately arranged. The handle only has the function of facilitating the lifting and opening of the tank cover. When producing the tank cover, the above two structures need to be formed separately, and a one-way valve needs to be set at the exhaust port, which increases the mold opening cost.

[0004] In addition, the existing can lid and can body are generally sealed by an ordinary O-ring with a square or circular cross-section, and the sealing effect is poor; and when the can lid is closed, additional pressure needs to be applied to press the can lid tightly and seal it, and the lid is often not tightly closed, making it impossible to evacuate the inside of the can body. Summary of the invention

[0005] In view of this, one of the objects of the present invention is to provide a vacuum tank, in which a handle is cooperatively installed at the inflation port, and has the functions of lifting and opening the tank cover and providing one-way air extraction for the vacuum device.

[0006] A second object of the present invention is to provide a vacuum tank assembly, comprising the above-mentioned vacuum tank and a vacuum extractor.

[0007] The technical solution adopted by the present invention to solve the technical problem is:

[0008] A vacuum tank comprises a tank body, a tank cover, a handle and a first sealing ring arranged between the tank body and the tank cover, wherein the tank cover is provided with an exhaust hole, the handle passes through the exhaust hole and an exhaust channel is left between the handle and the inner side wall of the exhaust hole, the upper part of the handle is provided with a carrying portion, the lower part of the handle is provided with a lifting protrusion for lifting the tank cover, and the handle is provided with a sealing soft plastic film that can be pressed against the upper surface of the tank cover to close the upper end of the exhaust channel.

[0009] In a preferred embodiment of the present invention, the lifting protrusion shields the lower port of the air extraction channel, and an air guide channel connected to the air extraction channel is provided between the lifting protrusion and the lower surface of the tank cover.

[0010] In a preferred embodiment of the present invention, a plurality of support blocks capable of abutting against the lifting protrusion are provided on the lower surface of the can cover, and the spaces between different support blocks form the air guide channel.

[0011] In a preferred embodiment of the present invention, the lower surface of the sealing soft plastic sheet is provided with a plurality of annular convex ribs abutting against the upper surface of the can cover.

[0012] In a preferred embodiment of the present invention, the handle, lifting protrusion and sealing soft rubber sheet are an integrated soft rubber structure, and the handle is provided with vertical blind holes so that the sealing soft rubber sheet can be driven away from the upper surface of the can cover when the two sides of the handle are squeezed.

[0013] In a preferred embodiment of the present invention, a hard auxiliary lifting plate is detachably installed inside the lifting protrusion.

[0014] In a preferred embodiment of the present invention, the air extraction hole is a circular hole, the auxiliary lifting plate is a circular plate, and the diameter of the auxiliary lifting plate is greater than the diameter of the air extraction hole.

[0015] In a preferred embodiment of the present invention, the vertical blind hole comprises a first blind hole with an opening facing downward, a card-mounting groove is provided on the inner side wall of the first blind hole, and the auxiliary lifting plate is installed in the card-mounting groove.

[0016] In a preferred embodiment of the present invention, the auxiliary lifting plate divides the first blind hole into an upper hole section and a lower hole section, and a through hole connecting the upper hole section and the lower hole section is provided on the auxiliary lifting plate.

[0017] In a preferred embodiment of the present invention, the vertical blind hole further comprises a second blind hole opening upward, and the handle is provided with a partition separating the first blind hole from the second blind hole.

[0018] In a preferred embodiment of the present invention, a downwardly concave recess is provided in the middle of the can cover, the air extraction hole is provided at the bottom of the recess, and the handle and the sealing soft film are both accommodated in the recess.

[0019] In a preferred embodiment of the present invention, a mounting platform is provided on the tank cover, and the first sealing ring includes a sealing ring base clamped on the mounting platform and a sealing edge provided at the lower part of the sealing ring base, and a V-shaped groove opening outward is formed between the sealing edge and the sealing ring base, and when the tank cover is closed on the tank body, the sealing edge is pressed against the upper end surface of the tank body by gravity.

[0020] In a preferred embodiment of the present invention, the lower part of the tank cover has a cylinder, the lower part of the cylinder is inserted into the upper port of the tank body, the mounting platform is arranged on the outer wall of the upper part of the cylinder, the sealing ring base is provided with a groove opening inward, the mounting platform is inserted into the groove and has an interference fit with the sealing ring base.

[0021] In a preferred embodiment of the present invention, the thickness of the sealing edge gradually decreases from the fixed end to the free end.

[0022] A vacuum tank assembly includes a vacuum extractor and the above-mentioned vacuum tank, the vacuum extractor includes a shell and a vacuum pump arranged in the shell, the upper surface of the tank cover is provided with an annular mounting groove arranged around the handle, the bottom of the shell is provided with an annular base inserted in the annular mounting groove, and a second annular sealing ring is also provided between the shell and the tank cover.

[0023] The beneficial effects of the present invention are:

[0024] 1. The vacuum tank of the present invention has a handle on the tank cover that has the functions of both a vacuum check valve and a tank cover handle, and has multiple functions, which is beneficial to simplifying the structure of the tank cover and reducing production costs.

[0025] 2. A vertical blind hole is arranged on the handle. When the tank is in a vacuum state, the user can release the pressure inside the tank by pinching the handle to allow external air to enter the tank. After the air pressure inside the tank is balanced with that outside, the lid can be opened by lifting the handle.

[0026] 3. When the tank cover is installed on the tank body, the gravity of the tank cover, the handle, and the first sealing member can press the sealing edge against the upper end surface of the tank body, automatically forming a seal. When the tank body is in a vacuum state, due to the formation of a V-shaped groove between the sealing edge and the sealing ring base, the sealing edge will be pressed downward under the pressure of atmospheric pressure, and the sealing ring base will be pressed upward, so that the sealing ring base is closely attached to the lower surface of the mounting platform, and the sealing edge is closely attached to the upper end surface of the tank body, thereby achieving an excellent sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a cross-sectional view of the vacuum tank;

[0028] Figure 2 yes Figure 1 A magnified view of part A;

[0029] Figure 3 It is a three-dimensional image of the can lid;

[0030] Figure 4 It is a three-dimensional picture of the handle;

[0031] Figure 5 yes Figure 1A magnified view of part B;

[0032] Figure 6 is a cross-sectional view of the first sealing ring;

[0033] Figure 7 is a cross-sectional view of the vacuum tank assembly;

[0034] Figure 8 It is a cross-sectional view of the vacuum extractor. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0037] Reference Figures 1 to 6 A vacuum tank comprises a tank body 5, a tank cover 1, a handle 2 and a first sealing ring 6 arranged between the tank body 5 and the tank cover 1, a suction hole 11 is arranged on the tank cover 1, a handle 2 passes through the suction hole 11 and a suction channel 3 is left between the handle 2 and the inner side wall of the suction hole 11, a hand-held portion 21 is arranged on the upper part of the handle 2, a lifting protrusion 22 for lifting the tank cover 1 is arranged on the lower part of the handle 2, and a sealing soft plastic film 23 that can be pressed against the upper surface of the tank cover 1 to close the upper end of the suction channel 3 is arranged on the handle 2. The suction channel 3 can be the gap between the handle 2 and the inner side wall of the suction hole 11, or it can be a vertical groove arranged on the handle 2, or it can be a vertical groove arranged on the inner side wall of the suction hole 11.

[0038] In a specific solution of the present invention, a downwardly concave recess 14 is provided in the middle of the can cover 1 , the air extraction hole 11 is provided at the bottom of the recess 14 , and the handle 21 and the sealing soft film 23 are both accommodated in the recess 14 .

[0039] Reference Figures 7 and 8A vacuum tank assembly includes a vacuum extractor 7 and the above-mentioned vacuum tank, the vacuum extractor 7 includes a shell 71 and a vacuum pump 72 arranged in the shell 71, an annular mounting groove 15 is arranged on the upper surface of the tank cover 1, the above-mentioned recessed position 14 and the hand piece are all located in the area surrounded by the annular mounting groove 15, an annular base 711 inserted in the annular mounting groove 15 is arranged at the bottom of the shell 71, and an annular second sealing ring 8 is also arranged between the shell 71 and the tank cover 1, so that a closed space is formed between the vacuum extractor 7 and the tank cover 1 through the second sealing ring 8.

[0040] In the vacuum tank of the present invention, the tank cover 1 and the tank body 5 are sealed by the first sealing ring 6. When the air pressure in the tank body 5 is balanced with the external air pressure, the user can open the tank cover 1 by holding the handle 2. When the vacuum extractor 7 is used for vacuuming, the vacuum extractor 7 is installed in the above-mentioned annular installation groove 15, and a seal is formed between the vacuum extractor 7 and the tank cover 1 by the second sealing ring 8 at the bottom of the vacuum extractor 7. Then, the vacuum pump 72 of the vacuum extractor 7 is turned on to first extract the air between the vacuum extractor 7 and the tank cover 1. Then, a pressure difference is formed between the space inside the tank body 5 and the space inside the recess 14, so that the sealing soft plastic film 23 is turned upward and separated from the upper surface of the tank cover 1, and the air inside the tank body 5 can be extracted. When the vacuum degree inside the tank body 5 reaches the required level, the vacuum pump 72 is stopped, and then the pressure relief valve 73 on the vacuum extractor 7 is opened to make the space inside the recess 14 reach pressure balance with the external space. During this process, a pressure difference is formed again between the space inside the tank body 5 and the space inside the recess 14. This pressure difference can cause the sealing soft plastic film 23 to turn downward and press against the upper surface of the tank cover 1, closing the upper port of the exhaust passage 3, so that a vacuum environment can be maintained inside the tank body 5.

[0041] In the above scheme, the handle 2 on the tank cover 1 has the functions of both the exhaust check valve and the tank cover 1 handle 2, and has multiple functions, which is conducive to simplifying the structure of the tank cover 1 and reducing production costs.

[0042] In a preferred embodiment of the present invention, the lifting protrusion 22 shields the lower port of the air extraction channel 3, and an air guide 4 communicating with the air extraction channel 3 is provided between the lifting protrusion 22 and the lower surface of the tank cover 1. Preferably, the lower surface of the tank cover 1 is provided with a plurality of support blocks 13 capable of abutting against the lifting protrusion 22, and the spaces between different support blocks 13 form the air guide 4. With such a design, it is possible to ensure that there is sufficient contact area between the lifting protrusion 22 and the tank cover 1, while also ensuring that the air extraction channel 3 is unobstructed.

[0043] In certain preferred embodiments of the present invention, the lifting protrusion 22 can also be designed to have a shape that does not completely cover the lower port of the exhaust channel 3. For example, the exhaust hole 11 is designed to be a circular hole, and the upper surface of the lifting protrusion 22 is a square. The side length of the square is smaller than the diameter of the exhaust hole 11, and the length of the diagonal of the square is greater than the diameter of the exhaust hole 11.

[0044] In a further embodiment of the present invention, the lower surface of the sealing soft film 23 is provided with a plurality of annular ribs 231 abutting against the upper surface of the can cover 1 . There are preferably 2-3 annular ribs 231 , and all the annular ribs 231 are arranged around the axis of the handle 2 .

[0045] In a preferred embodiment of the present invention, the handle 21, the lifting protrusion 22, and the sealing soft rubber sheet 23 are an integrated soft rubber structure, which is formed by silicone integral injection molding.

[0046] In a further embodiment of the present invention, the handle 2 is provided with a vertical blind hole 20 so that when the two sides of the handle portion 21 are squeezed, the sealing soft plastic sheet 23 can be driven away from the upper surface of the tank cover 1. With such a design, when the tank body 5 is in a vacuum state, the user can pinch the handle portion 21 to release the pressure in the tank body 5, so that the external air can enter the tank body 5. After the air pressure inside the tank body 5 is balanced with that outside, the handle 2 can be lifted to open the tank cover 1.

[0047] As a further improvement of the above solution, a hard auxiliary lifting plate 24 is detachably installed inside the lifting protrusion 22. The auxiliary lifting plate 24 can improve the rigidity of the lower end of the handle 2 to prevent the handle 2 from being pulled out of the air extraction hole 11 when the tank cover 1 is opened. Preferably, the air extraction hole 11 is a circular hole, the auxiliary lifting plate 24 is a circular plate, and the diameter of the auxiliary lifting plate 24 is greater than the diameter of the air extraction hole 11.

[0048] As a further improvement of the above solution, the vertical blind hole 20 includes a first blind hole 201 with an opening facing downward, a clamping groove 221 is provided on the inner side wall of the first blind hole 201, and the auxiliary lifting plate 24 is installed in the clamping groove 221. The auxiliary lifting plate 24 divides the first blind hole 201 into an upper hole section and a lower hole section, and a through hole 241 connecting the upper hole section and the lower hole section is provided on the auxiliary lifting plate 24. With such a design, when the user pinches the handle 21 to release pressure, part of the air in the upper hole section can be squeezed out, so that the handle 2 is squeezed and deformed.

[0049] Specifically, the vertical blind hole 20 further includes a second blind hole 202 with an opening facing upward, and the handle 2 is provided with a partition 25 separating the first blind hole 201 and the second blind hole 202 .

[0050] As a further improvement of the present invention, a mounting platform 16 is provided on the tank cover 1, and the first sealing ring 6 includes a sealing ring base 61 clamped on the mounting platform 16 and a sealing edge 62 provided at the lower part of the sealing ring base 61, and a V-shaped groove 63 with an opening facing outward is formed between the sealing edge 62 and the sealing ring base 61. When the tank cover 1 is closed on the tank body 5, the sealing edge 62 is pressed against the upper end surface of the tank body 5 by gravity.

[0051] Specifically, the lower part of the cylinder 17 is inserted into the upper port of the tank body 5 to limit the horizontal movement of the tank cover 1 relative to the tank body 5. The mounting platform 16 is arranged on the outer wall of the upper part of the cylinder 17. The sealing ring base 61 is provided with a card groove 611 opening inward. The mounting platform 16 is inserted into the card groove 611 and has an interference fit with the sealing ring base 61.

[0052] When the can cover 1 is installed on the can body 5, the sealing edge 62 can be pressed against the upper end surface of the can body 5 under the gravity of the can cover 1, the hand piece, and the first sealing member, and a seal is automatically formed. When the can body 5 is in a vacuum state, a V-shaped groove 63 is formed between the sealing edge 62 and the sealing ring base 61. Under the pressure of atmospheric pressure, the sealing edge 62 is pressed downward, and the sealing ring base 61 is pressed upward, so that the sealing ring base 61 is closely attached to the lower surface of the mounting platform 16, and the sealing edge 62 is closely attached to the upper end surface of the can body 5, thereby achieving an excellent sealing effect.

[0053] Furthermore, the thickness of the sealing edge 62 gradually decreases from the fixed end to the free end. With such a structure, the pressure bearing capacity of the sealing edge 62 gradually decreases from the fixed end to the free end, and under the pressure of atmospheric pressure, it can be ensured that the free end of the sealing edge 62, that is, the edge of the sealing edge 62, is in close contact with the upper end surface of the tank body 5.

[0054] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A vacuum tank, comprising a tank body (5), a tank cover (1), a handle (2), and a first sealing ring (6) arranged between the tank body (5) and the tank cover (1), wherein the tank cover (1) is provided with an air extraction hole (11), characterized in that: The handle (2) passes through the exhaust hole (11) and an exhaust channel (3) is left between the handle (2) and the inner side wall of the exhaust hole (11); the upper part of the handle (2) is provided with a handle portion (21); the lower part of the handle (2) is provided with a lifting protrusion (22) for lifting the can cover (1); the handle (2) is provided with a sealing soft plastic film (23) capable of pressing against the upper surface of the can cover (1) to close the upper end of the exhaust channel (3); the lifting protrusion (22) covers the lower end of the exhaust channel (3); an air guide channel (4) connected to the exhaust channel (3) is provided between the lifting protrusion (22) and the lower surface of the can cover (1); the lower surface of the can cover (1) is provided with a plurality of supporting members capable of abutting against the lifting protrusion (22) The lifting block (13) is provided with a space between different supporting blocks (13) to form an air guide channel (4); the handle (21), the lifting protrusion (22) and the sealing soft rubber sheet (23) are an integrated soft rubber structure; the handle (2) is provided with a vertical blind hole (20) so that when the two sides of the handle (21) are squeezed, the sealing soft rubber sheet (23) can be driven to separate from the upper surface of the can cover (1); a hard auxiliary lifting plate (24) is detachably installed inside the lifting protrusion (22); the vertical blind hole (20) includes a first blind hole (201) with an opening facing downward, the auxiliary lifting plate (24) divides the first blind hole (201) into an upper hole section and a lower hole section, and the auxiliary lifting plate (24) is provided with a through hole (241) for connecting the upper hole section and the lower hole section.

2. The vacuum tank according to claim 1, characterized in that: The lower surface of the sealing soft rubber film (23) is provided with a plurality of annular convex ribs (231) that abut against the upper surface of the can cover (1).

3. The vacuum tank according to claim 1, characterized in that: A downwardly concave recess (14) is provided in the middle of the can cover (1), the air extraction hole (11) is provided at the bottom of the recess (14), and the handle (21) and the sealing soft plastic film (23) are both accommodated in the recess (14).

4. The vacuum tank according to claim 1, characterized in that: The tank cover (1) is provided with a mounting platform (16), the first sealing ring (6) comprising a sealing ring base (61) clamped on the mounting platform (16) and a sealing edge (62) provided at the bottom of the sealing ring base (61), a V-shaped groove (63) opening outward is formed between the sealing edge (62) and the sealing ring base (61), and when the tank cover (1) is closed on the tank body (5), the sealing edge (62) is pressed against the upper end surface of the tank body (5) by gravity.

5. The vacuum tank according to claim 4, characterized in that The lower part of the tank cover (1) comprises a cylinder (17), the lower part of the cylinder (17) is inserted into the upper port of the tank body (5), the mounting platform (16) is arranged around the outer wall of the upper part of the cylinder (17), the sealing ring base (61) is provided with a slot (611) with an opening facing inward, and the mounting platform (16) is inserted into the slot (611) and is interference fit with the sealing ring base (61).

6. The vacuum tank according to claim 4, characterized in that: The thickness of the sealing edge (62) gradually decreases from its fixed end to its free end.

7. A vacuum tank assembly, characterized in that: The invention comprises a vacuum extractor (7) and a vacuum tank according to any one of claims 1 to 6, wherein the vacuum extractor (7) comprises a shell (71) and a vacuum pump (72) arranged in the shell (71); the upper surface of the tank cover (1) is provided with an annular mounting groove (15) arranged around the handle (2); the bottom of the shell (71) is provided with an annular base (711) inserted into the annular mounting groove (15); and an annular second sealing ring (8) is further provided between the shell (71) and the tank cover (1).

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