Sealing structure of rice bucket cover

Abstract

The invention discloses a sealing structure of a rice barrel cover, comprising a barrel body and a barrel cover, wherein an annular sealing ring is arranged on the inner side of the barrel cover, wherein the sealing ring comprises a sealing ring base fixed to the barrel cover and a sealing edge arranged at the lower part of the sealing ring base, wherein a V-shaped groove with an opening facing outward is formed between the sealing edge and the sealing ring base, and when the barrel cover is closed on the barrel body, the sealing edge is pressed against the upper end surface of the barrel body by gravity. The invention has an excellent sealing effect, and when the vacuum rice barrel cover of the invention is applied, the sealing edge can be pressed against the upper end surface of the barrel body by the gravity of the barrel cover, thereby automatically forming a seal.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum rice buckets, and in particular to a sealing structure of a rice bucket cover. Background Art

[0002] Rice buckets are used by many families, especially in rural areas. Rice buckets are mainly used to store staple foods such as rice and flour. The weather in the south is generally humid and warm, so long-term storage of rice is prone to moisture and deterioration in summer. Eating damp and deteriorated rice will seriously endanger human health.

[0003] In order to prevent rice from getting damp and spoiling, vacuum rice barrels that can evacuate the interior have come into being. The vacuum rice barrel consists of three parts: the barrel body, the barrel cover and the vacuum device. A sealing ring is set between the barrel body and the barrel cover. After the barrel cover is tightly closed on the barrel body, a seal is formed between the barrel cover and the barrel body. The vacuum device is turned on to evacuate the interior, which can effectively prevent rice from getting damp and spoiling and increase the storage time of rice.

[0004] In the existing vacuum rice barrel, the barrel body and the barrel cover are generally sealed by an O-ring with a circular or square cross-section. The surface of the barrel cover that contacts the O-ring is its lower end surface or the inner side surface of the cylinder, and the sealing effect is not good. Moreover, when the barrel cover is closed, additional pressure needs to be applied to press the barrel cover tightly and seal it. The cover is often not tight, and the inside of the barrel body cannot be vacuumed. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a sealing structure of a rice bucket lid with excellent sealing effect.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A sealing structure for a rice barrel cover comprises a barrel body and a barrel cover, wherein an annular sealing ring is arranged on the inner side of the barrel cover, wherein the sealing ring comprises a sealing ring base fixed to the barrel cover and a sealing edge arranged at the lower part of the sealing ring base, wherein a V-shaped groove with an opening facing outward is formed between the sealing edge and the sealing ring base, and when the barrel cover is closed on the barrel body, the sealing edge is pressed against the upper end surface of the barrel body by gravity.

[0008] Preferably, the sealing ring base is provided with a card slot with an opening facing inward, and the barrel cover is provided with a card block that is inserted into the card slot.

[0009] Preferably, a concave-convex matching structure capable of limiting the block from escaping from the slot is provided between the block and the sealing ring base.

[0010] Preferably, the concave-convex matching structure comprises a concave groove provided on the upper surface of the block and a convex portion provided on the sealing ring base and matching with the concave groove.

[0011] Preferably, the barrel cover comprises a panel and an inner lining plate installed on the inner side of the panel, the clamping block is arranged on the edge of the inner lining plate, and the panel is provided with a pressing ring member capable of pressing the sealing ring base against the upper surface of the clamping block.

[0012] Preferably, at least two protruding teeth are arranged at intervals on the lower end surface of the pressure ring.

[0013] Preferably, the edge of the panel is bent downward to form a cover edge, and a gap is left between the cover edge and the sealing ring base.

[0014] Preferably, the barrel cover comprises a panel and an inner lining plate installed on the inner side of the panel, the edge of the panel is bent downward to form a cover edge, and a step capable of supporting the cover edge is provided on the outer side wall of the barrel body.

[0015] Preferably, the barrel body includes a main barrel body and a barrel rim fixed to the upper end of the main barrel body, the step is arranged on the barrel rim, and when the barrel cover is closed on the barrel body, the sealing edge is pressed against the upper end surface of the barrel rim by gravity.

[0016] Preferably, the thickness of the sealing edge gradually decreases from its fixed end to its free end.

[0017] The beneficial effects of the present invention are:

[0018] 1. When the vacuum rice barrel of the present invention is covered with a barrel cover, the sealing edge can be pressed against the upper end surface of the barrel body under the gravity of the barrel cover to automatically form a seal.

[0019] 2. The interior of the vacuum rice barrel is in a vacuum state when it is working. At this time, 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 at the same time, so that the sealing ring base is close to the barrel cover and the sealing edge is close to the upper end surface of the barrel body, thereby achieving an excellent sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of a vacuum rice bucket;

[0021] Figure 2 yes Figure 1 A magnified view of part A;

[0022] Figure 3 It is a cross-sectional view of the sealing ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0024] 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.

[0025] Reference Figures 1 to 3 The embodiment of the present invention provides a sealing structure of a rice barrel cover, comprising a barrel body 1 and a barrel cover 2, wherein an annular sealing ring 3 is arranged on the inner side of the barrel cover 2, wherein the sealing ring 3 comprises a sealing ring base 31 fixed to the barrel cover 2 and a sealing edge 32 arranged at the lower part of the sealing ring base 31, wherein a V-shaped groove 301 with an opening facing outward is formed between the sealing edge 32 and the sealing ring base 31, and when the barrel cover 2 is closed on the barrel body 1, the sealing edge 32 is pressed against the upper end surface of the barrel body 1 by gravity. The opening of the V-shaped groove 301 faces outward, i.e., the opening of the V-shaped groove 301 faces the direction away from the center line of the sealing ring 3.

[0026] When the vacuum rice barrel of the present invention is covered with the barrel cover 2, the sealing edge 32 can be pressed against the upper end surface of the barrel body 1 under the gravity of the barrel cover 2, and a seal is automatically formed. When the vacuum rice barrel is working, the interior is in a vacuum state. At this time, due to the formation of a V-shaped groove 301 between the sealing edge 32 and the sealing ring base 31, the sealing edge 32 is pressed downward under the pressure of atmospheric pressure, and the sealing ring base 31 is pressed upward, so that the sealing ring base 31 is closely attached to the barrel cover 2, and the sealing edge 32 is closely attached to the upper end surface of the barrel body 1, thereby achieving an excellent sealing effect.

[0027] Furthermore, the sealing ring base 31 is provided with a slot 311 opening inwardly, and the barrel cover 2 is provided with a block 201 inserted into the slot 311, and the sealing ring base 31 and the barrel cover 2 are fixed by the cooperation of the block 201 and the slot 311. Preferably, the block 201 and the slot 311 are interference fit.

[0028] Furthermore, a concave-convex matching structure capable of limiting the block 201 from escaping from the slot 311 is provided between the block 201 and the sealing ring base 31 .

[0029] In a preferred embodiment of the present invention, the concave-convex matching structure includes a groove 202 provided on the upper surface of the clamping block 201 and a convex portion 312 provided on the sealing ring base 31 and matching with the groove 202. When the sealing ring 3 is mounted on the barrel cover 2, the clamping block 201 is clamped into the clamping groove 311 of the sealing ring base 31, and the convex portion 312 on the sealing ring base 31 is clamped into the groove 202 on the upper surface of the clamping block 201, which can effectively prevent the sealing ring 3 from being separated from the barrel cover 2.

[0030] Furthermore, the barrel cover 2 includes a panel 21 and an inner lining plate 22 installed on the inner side of the panel 21, a clamping block 201 is arranged on the edge of the inner lining plate 22, and a pressing ring member 211 capable of pressing the sealing ring base 31 against the upper surface of the clamping block 201 is arranged on the panel 21. In this scheme, the process of installing the sealing ring 3 is: firstly install the sealing ring 3 on the inner lining plate 22, so that the clamping block 201 of the inner plate is inserted into the clamping groove 311 of the sealing ring 3, and then fix the inner lining plate 22 to the inner side of the panel 21 by screw connection, welding, etc., so that the sealing ring 3 can be pressed by the above-mentioned pressing ring member 211, so as to avoid the sealing ring 3 from loosening during the use of the vacuum rice barrel and affecting the sealing effect.

[0031] Furthermore, at least two convex teeth 212 are arranged at intervals on the lower end surface of the pressing ring 211. The sealing ring 3 is pressed by at least two convex teeth 212 arranged at intervals to prevent only one point on the upper part of the sealing ring 3 from being pressed and tilted.

[0032] The edge of the panel 21 is bent downward to form a cover edge 213. Furthermore, a gap is left between the cover edge 213 and the sealing ring base 31. The gap between the cover edge 213 and the sealing ring base 31 can not only limit the separation of the sealing ring base 31 from the inner lining plate 22, but also reserve a certain deformation space for the sealing ring 3, which is conducive to releasing the stress on the sealing ring 3.

[0033] Reference Figure 2 , a step 101 capable of supporting the cover edge 213 is provided on the outer wall of the barrel body 1. In a specific scheme of the present invention, the barrel body 1 includes a main barrel body 11 and a barrel edge ring 12 fixed to the upper end of the main barrel body 11, and the step 101 is provided on the barrel edge ring 12. When the barrel cover 2 is closed on the barrel body 1, the sealing edge 32 is pressed against the upper end surface of the barrel edge ring 12 by gravity. The barrel body 1 adopts a structure assembled by the barrel edge ring 12 at the upper end of the main barrel body 11, which is conducive to reducing the mold opening cost. Of course, when the mold opening cost has little impact on the cost of the entire vacuum rice barrel, the barrel body 1 can also be designed as an integrated structure.

[0034] Furthermore, the thickness of the sealing edge 32 gradually decreases from the fixed end to the free end. With such a structure, the pressure bearing capacity of the sealing edge gradually decreases from the fixed end to the free end, and under the pressure of atmospheric pressure, the free end of the sealing edge, that is, the edge of the sealing edge, can be ensured to be in close contact with the upper end surface of the barrel body 1.

[0035] 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 sealing structure for a rice barrel cover, comprising a barrel body (1) and a barrel cover (2), characterized in that: An annular sealing ring (3) is arranged on the inner side of the barrel cover (2), and the sealing ring (3) comprises a sealing ring base (31) fixed to the barrel cover (2) and a sealing edge (32) arranged on the inner side of the lower part of the sealing ring base (31), and a V-shaped groove (301) with an opening facing outward is formed between the sealing edge (32) and the sealing ring base (31), and when the barrel cover (2) is closed on the barrel body (1), the sealing edge (32) is pressed against the upper end surface of the barrel body (1) by gravity; The barrel cover (2) comprises a panel (21) and an inner lining plate (22) mounted on the inner side of the panel (21); the edge of the panel (21) is bent downward to form a cover edge (213); and a step (101) capable of supporting the cover edge (213) is provided on the outer side wall of the barrel body (1); The barrel body (1) comprises a main barrel body (11) and a barrel rim (12) fixed to the upper end of the main barrel body (11); the step (101) is arranged on the barrel rim (12); when the barrel cover (2) is closed on the barrel body (1), the sealing edge (32) is pressed against the upper end surface of the barrel rim (12) by gravity; The sealing ring (3) is arranged on the edge of the inner lining plate (22), and the inner side wall of the cover edge (213) blocks the outer side of the free end of the sealing edge (32); The sealing ring base (31) is provided with a slot (311) with an opening facing inwards, and the barrel cover (2) is provided with a block (201) that is inserted into the slot (311); A concave-convex matching structure capable of preventing the clamping block (201) from coming out of the clamping groove (311) is also provided between the clamping block (201) and the sealing ring base (31); The edge of the panel (21) is bent downward to form a cover edge (213), and a gap is left between the cover edge (213) and the sealing ring base (31).

2. The sealing structure of a rice bucket cover according to claim 1, characterized in that: The concave-convex matching structure comprises a concave groove (202) provided on the upper surface of the clamping block (201) and a convex portion (312) provided on the sealing ring base (31) and matching with the concave groove (202).

3. The sealing structure of a rice bucket cover according to claim 1, characterized in that: The clamping block (201) is arranged at the edge of the inner lining plate (22), and a pressing ring member (211) capable of pressing the sealing ring base (31) against the upper surface of the clamping block (201) is arranged on the panel (21).

4. The sealing structure of a rice bucket cover according to claim 3, characterized in that: At least two protruding teeth (212) are arranged at intervals on the lower end surface of the pressure ring (211).

5. The sealing structure of a rice bucket cover according to claim 1, characterized in that: The thickness of the sealing edge (32) gradually decreases from its fixed end to its free end.

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