Sealing cover

Abstract

The utility model provides a sealing cover, which belongs to the technical field of barrel covers and comprises a cover body, a sealing ring and a protective cover, and a vent plug is arranged on the top surface of the cover body; the sealing ring is arranged in the cover body; the protective cover is arranged in the cover body and located on the inner ring of the sealing ring, a first through hole located in the bottom and a second through hole located in the side wall are formed in the protective cover, and a cavity communicated with the first through hole, the second through hole and the vent plug is formed in the protective cover. According to the sealing cover provided by the utility model, the sealing connection between the cover body and the barrel body can be ensured, and liquid leakage is avoided; in the storage process of the liquid fertilizer, if flatulence is generated, gas enters the cavity through the first through hole and is discharged through the vent plug, so that the barrel body is prevented from being deformed; in the transportation process of the liquid fertilizer, if the liquid fertilizer enters the cavity through the first through hole, the liquid fertilizer can be emergently discharged from the second through hole, and the exhaust effect of the vent plug is prevented from being affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of barrel covers, and particularly relates to a sealing cover. Background Art

[0002] Plastic barrels are widely used as containers. When liquids are contained in them, it is necessary to ensure that the barrel lid can be sealed after being tightened, especially when the substance contained in the plastic barrel is liquid fertilizer. There are many types of liquid fertilizers, such as corrosive acids, amino acids, seaweed extracts, suspending agents, microbial agents, etc. Liquid fertilizers are prone to bloating during storage. In order to prevent the barrel body from being deformed due to bloating, a vent plug is usually installed on the barrel lid. However, during the transportation of liquid fertilizers, the liquid surface inside will shake and adhere to the vicinity of the vent plug. Long-term use will stick to the vent plug, making it impossible to ensure the smooth discharge of other substances in the barrel, and the barrel body is prone to deformation, rupture, and other problems. Utility Model Content

[0003] The embodiment of the utility model provides a sealing cover, which aims to solve the technical problem that the existing plastic barrel lid is provided with a vent plug to prevent liquid fertilizer from bloating, but the vent plug is easily stuck by the liquid fertilizer, causing the barrel body to deform and rupture.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a sealing cover, comprising:

[0005] A cover body, wherein a vent plug is provided on the top surface of the cover body;

[0006] A sealing ring is provided in the cover body;

[0007] The protective cover is arranged in the cover body and located on the inner ring of the sealing ring. The protective cover is provided with a first through hole located at the bottom and a second through hole located on the side wall. The protective cover is provided with a cavity connecting the first through hole, the second through hole and the air plug.

[0008] In a possible implementation, the protective cover is welded to the top wall inside the cover body.

[0009] In a possible implementation, the top of the protective cover protrudes outward to form a connecting ring, and the top surface of the connecting ring is in contact with the top wall of the cover body and is welded together.

[0010] In a possible implementation manner, a top surface of the connecting ring is provided with a welding profile.

[0011] In a possible implementation, the protective cover further includes:

[0012] a baffle, disposed in the cavity and above the first through hole;

[0013] A connecting strip is fixedly connected between the baffle and the side wall of the first through hole. A plurality of connecting strips are arranged at intervals along the axis of the first through hole, and a ventilation gap is formed between two adjacent connecting strips.

[0014] In a possible implementation, the protective cover is a plastic component.

[0015] In a possible implementation, a plurality of second through holes are evenly arranged on the side wall of the protective cover around the axial direction of the cover body.

[0016] In a possible implementation, a limiting ring is provided at the top of the cover body, the sealing ring is located between the limiting ring and the outer peripheral side wall of the cover body, and the protective cover is located on the inner ring of the limiting ring.

[0017] In a possible implementation, the sealing ring and the cover body are integrally formed.

[0018] In a possible implementation, the sealing ring is made of silicone.

[0019] Compared with the prior art, the solution shown in the embodiment of the present application is that after the sealing cover is installed, the sealing ring of the embodiment can ensure the sealed connection between the cover body and the barrel body to avoid liquid leakage; during the storage of liquid fertilizer, if flatulence is generated, the gas will enter the cavity through the first through hole and be discharged through the vent plug to avoid deformation of the barrel body; during the transportation of liquid fertilizer, if liquid fertilizer enters the cavity through the first through hole, it can be urgently discharged from the second through hole to avoid affecting the exhaust effect of the vent plug; the vent plug is protected by a protective cover to prevent the liquid fertilizer from sticking to the vent plug, thereby ensuring the exhaust effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the sealing cover provided in an embodiment of the present utility model;

[0021] Figure 2 A schematic cross-sectional view of the sealing cover provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective cover used in the embodiment of the present utility model.

[0023] Description of reference numerals:

[0024] 10-cover; 11-vent plug; 12-limiting ring; 13-anti-slip ridges;

[0025] 20-sealing ring;

[0026] 30 - protective cover; 31 - first through hole; 32 - second through hole; 33 - cavity; 34 - connecting ring; 35 - welding profile; 36 - baffle; 37 - connecting strip. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] In the claims, description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is to distinguish different objects rather than to describe a specific order.

[0029] Unless otherwise expressly defined, the directional words in the claims, specification and the above-mentioned drawings of the present invention, such as the terms "upper", "lower", "top", "bottom", "front", "back", "inside", "outside", "center", "transverse", "longitudinal", "horizontal", "vertical", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention.

[0030] In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixed connection" are used, they should be understood in a broad sense, that is, any connection method without any displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0031] In the claims, description and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0032] Please also refer to Figures 1 to 3The sealing cover provided by the present invention is now described. The sealing cover includes a cover body 10, a sealing ring 20, and a protective cover 30. The top surface of the cover body 10 is provided with a vent plug 11; the sealing ring 20 is disposed within the cover body 10; and the protective cover 30 is disposed within the cover body 10 and is located within the inner ring of the sealing ring 20. The protective cover 30 is provided with a first through hole 31 at the bottom and a second through hole 32 on the side wall. A cavity 33 is provided within the protective cover 30, which communicates with the first through hole 31, the second through hole 32, and the vent plug 11.

[0033] It should be noted that the side walls of the protective cover 30 are spaced apart from the outer peripheral side walls of the cover body 10 .

[0034] In a specific implementation, the inner wall of the cover body 10 is provided with threads, and is screwed to the barrel body through the threads. After the screwing is completed, the sealing ring 20 is squeezed to achieve a sealed installation.

[0035] Compared with the prior art, the sealing cover provided in this embodiment has the following advantages: after the sealing cover is installed, the sealing ring 20 can ensure the sealed connection between the cover body 10 and the barrel body to avoid liquid leakage; during the storage of liquid fertilizer, if flatulence occurs, the gas will enter the cavity 33 through the first through hole 31 and be discharged through the air plug 11 to avoid deformation of the barrel body; during the transportation of liquid fertilizer, if liquid fertilizer enters the cavity 33 through the first through hole 31, it can be urgently discharged from the second through hole 32 to avoid affecting the exhaust effect of the air plug 11; the air plug 11 is protected by the protective cover 30 to prevent the liquid fertilizer from sticking to the air plug 11, thereby ensuring the exhaust effect.

[0036] In some embodiments, a specific installation method for the protective cover 30 is to weld the protective cover 30 to the top wall of the cover body 10. The protective cover 30 can be connected to the cover body 10 by ultrasonic welding. Compared with other installation methods, welding can simplify the structure of the protective cover 30 and the cover body 10, facilitate production, and ensure the sealing of the connection between the protective cover 30 and the cover body 10 after welding, thereby optimizing the protection effect of the vent plug 11.

[0037] In some embodiments, an improved embodiment of the protective cover 30 can be as follows: Figures 2 to 3 See the structure shown. Figures 2 to 3 The top of the protective cover 30 protrudes outward to form a connecting ring 34. The top surface of the connecting ring 34 is in contact with the top wall of the cover body 10 and is welded to the top. The connection ring 34 on the top of the protective cover 30 can increase the contact area with the cover body 10, facilitate the welding operation, improve the connection stability of the protective cover 30, and reduce the probability of the protective cover 30 falling off.

[0038] Specifically, see Figure 3The top surface of the connecting ring 34 is provided with a welding profile 35. The welding profile 35 is pre-processed on the connecting ring 34, and welding can be performed along the profile during ultrasonic welding, which facilitates operation and improves welding efficiency.

[0039] Optionally, the welding profile 35 is provided with multiple circles from the inside to the outside.

[0040] In some embodiments, an improved embodiment of the protective cover 30 can be as follows: Figures 2 to 3 See the structure shown. Figures 2 to 3 The protective cover 30 also includes a baffle 36 and a connecting bar 37. The baffle 36 is positioned within the cavity 33 and above the first through-hole 31. The connecting bar 37 is fixedly connected between the baffle 36 and the sidewall of the first through-hole 31. Multiple connecting bars 37 are provided along the axis of the first through-hole 31, with a ventilation gap formed between adjacent connecting bars 37. When liquid fertilizer enters the cavity 33 through the first through-hole 31, it contacts the baffle 36, which blocks the flow of liquid fertilizer, reducing the amount of liquid fertilizer entering the cavity 33. This ensures that the liquid fertilizer in the cavity 33 can quickly flow out through the second through-hole 32 and the first through-hole 31, thereby preventing the air venting effect of the vent plug 11 from being affected.

[0041] In the embodiment of the present application, the protective cover 30 is a plastic component, and specifically can be made of the same plastic as the cover body 10 , such as PE material.

[0042] In some embodiments, an improved embodiment of the protective cover 30 may employ the following structure. (Not shown in the figures, multiple second through holes 32 are evenly distributed on the sidewall of the protective cover 30 around the axial direction of the cover 10.) Increasing the number of second through holes 32 facilitates the rapid discharge of liquid fertilizer from the cavity 33 when it reaches the height of the second through holes 32, ensuring that the rate at which the liquid fertilizer is discharged from the cavity 33 is greater than the rate at which the liquid fertilizer enters the cavity 33 through the first through holes 31, thereby preventing the liquid fertilizer from rising in the cavity 33 and contacting the vent plug 11.

[0043] It should be noted that when there is only one second through hole 32 , it is necessary to ensure that the size of the second through hole 32 can meet the required rate of discharge of the liquid fertilizer from the cavity 33 .

[0044] In some embodiments, an improved embodiment of the cover 10 can be as follows Figure 2 See the structure shown. Figure 2A limiting ring 12 is provided at the top of the cover 10, a sealing ring 20 is located between the limiting ring 12 and the outer peripheral side wall of the cover 10, and a protective cover 30 is located inside the limiting ring 12. The limiting ring 12 facilitates the division of the space inside the cover 10 into an area for installing the sealing ring 20 and an area for installing the protective cover 30, facilitating production. After both the sealing ring 20 and the protective cover 30 are installed, the limiting ring 12 can also be used to position the sealing ring 20 and the protective cover 30, respectively.

[0045] In some embodiments, a specific installation method for the sealing ring 20 is: the sealing ring 20 is integrally molded with the cover 10. The sealing ring 20 and the cover 10 can be integrally molded using a two-shot mold injection process. The integral molding method can replace the subsequent installation of the sealing ring 20 in the cover 10. In addition, this method makes the sealing ring 20 more firmly bonded to the cover 10, is less likely to fall off, and has a better sealing effect.

[0046] Specifically, the sealing ring 20 is made of silicone. Silicone is relatively soft and can be squeezed well against the mouth of the barrel after the lid 10 is installed to ensure that there is no leakage. After the sealing ring 20 is squeezed and sealed, it is unnecessary to perform sealing operations on the periphery of the lid 10, reducing the number of operating steps. The silicone sealing ring 20 can also be easily reused, reducing costs.

[0047] In some embodiments, an improved embodiment of the cover 10 can be as follows Figures 1 to 2 The structure shown. Figures 1 to 2 The outer circumference of the cover 10 is protruded with anti-skid ridges 13. Since the cover 10 is mainly connected to the barrel body by screw threads, by providing anti-skid ridges 13 on the outer circumference of the cover 10, the friction between the human hand and the cover 10 can be increased, making it easier to screw the cover 10.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealing cover, characterized in that: include: A cover body, wherein a vent plug is provided on the top surface of the cover body; A sealing ring is provided in the cover body; The protective cover is arranged in the cover body and located on the inner ring of the sealing ring. The protective cover is provided with a first through hole located at the bottom and a second through hole located on the side wall. The protective cover is provided with a cavity connecting the first through hole, the second through hole and the air plug.

2. The sealing cover according to claim 1, wherein: The protective cover is welded to the top wall of the cover body.

3. The sealing cover according to claim 2, wherein: The top of the protective cover protrudes outward to form a connecting ring, and the top surface of the connecting ring is in contact with the top wall of the cover body and is welded together.

4. The sealing cover according to claim 3, wherein: The top surface of the connecting ring is provided with a welding profile.

5. The sealing cover according to claim 1, wherein: The protective cover also includes: a baffle, disposed in the cavity and above the first through hole; A connecting strip is fixedly connected between the baffle and the side wall of the first through hole. A plurality of connecting strips are arranged at intervals along the axis of the first through hole, and a ventilation gap is formed between two adjacent connecting strips.

6. The sealing cover according to claim 1, wherein: The protective cover is a plastic component.

7. The sealing cover according to claim 1, wherein: A plurality of second through holes are evenly arranged on the side wall of the protective cover around the axial direction of the cover body.

8. The sealing cover according to claim 1, wherein: A limiting ring is provided on the top of the cover body, the sealing ring is located between the limiting ring and the peripheral side wall of the cover body, and the protective cover is located on the inner ring of the limiting ring.

9. The sealing cover according to claim 1, wherein: The sealing ring and the cover body are integrally formed.

10. The sealing cover according to claim 9, wherein: The sealing ring is made of silicone.

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