Oil-proof spout and oiler

Abstract

The utility model provides a kind of anti-hanging oil spout and oil canister, it is related to the technical field of kitchen supplies, including integrally-formed connecting portion, oil return groove and oil outlet;The radial diameter of one end of connecting portion gradually decreases to be sleeved in the oil outlet end of oil canister, and the other end of connecting portion is provided with oil return groove, and oil return groove is trumpet-shaped, and the annular opening end of oil return groove extends outward to form oil outlet, and the surface of oil outlet is inclined flow surface to the direction of connecting portion, and the end of oil outlet is greater than the perpendicular line of oil return groove outer edge and ground than the perpendicular line of ground;Strip-shaped gap is provided on the surface of oil outlet, and strip-shaped gap is communicated to the opening of oil return groove, for oil return, solve the technical problem of spout hanging oil in the prior art, achieve the technical effect of not leaking oil, reflow into oil canister along wall after appearing hanging oil, prevent pollution of canister body.

Description

Technical Field

[0001] This utility model relates to the field of kitchenware technology, and in particular to a spout and oil bottle that prevent oil from dripping. Background Technology

[0002] In daily life, bottled cooking oil typically holds around 5 liters. Pouring oil directly from a bottle into a wok is inconvenient due to the large size and weight of the container, making it difficult to precisely control the amount poured. Therefore, transferring the oil from the bottle to a smaller oil dispenser is a better solution. When filled, the dispenser is lighter and easier to hold, allowing for more precise control of the amount poured into the wok, thus meeting everyday cooking needs.

[0003] From the perspective of existing technology, the design of oil spouts for oil dispensers is mainly as follows: one type is the traditional "eagle beak oil dispenser," where the spout is installed on the side of the dispenser body. In order to optimize the smoothness of pouring oil, the spout is designed in the shape of an eagle beak, and the oil is poured out from the side to achieve convenient pouring; the other type of oil dispenser has the spout installed on the top of the dispenser, allowing the oil remaining on the spout to flow along the spout to the mouth of the dispenser, and then flow back from the mouth of the dispenser into the dispenser. At the same time, the lid of this type of oil dispenser mostly adopts a screw-on structure to achieve a seal on the mouth of the dispenser.

[0004] However, both existing types of oil spout structures have the following technical problems: Due to the high viscosity of cooking oil, a large amount of oil remains on the spout of the eagle-beak oil bottle after pouring. This oil flows continuously down the outer wall of the spout to the body of the bottle, causing oil stains that are difficult to clean. While the top-mounted spout allows the oil to flow back, pouring requires raising the bottom of the bottle above the spout and rotating it from a vertical position to a horizontal position with the bottom slightly elevated. This makes it difficult to control the amount of oil poured, easily resulting in pouring too much or too little. Furthermore, the screw-on lid joints tend to leak oil after prolonged use, further contaminating the bottle. Utility Model Content

[0005] The purpose of this invention is to provide a spout and oil container that prevent oil from dripping, so as to alleviate the technical problem of oil dripping from the spout in the prior art.

[0006] The oil-resistant spout provided by this utility model includes: an integrally formed connecting part, an oil return groove, and an oil outlet; The radial diameter of one end of the connector gradually decreases to fit onto the oil outlet of the oil can. The other end of the connector is provided with an oil return groove, which is funnel-shaped. The annular opening end of the oil return groove extends outward to form an oil outlet. The surface of the oil outlet is a guide slope that is inclined towards the connector. The vertical line between the end of the oil outlet and the ground is greater than the vertical line between the outer edge of the oil return groove and the ground. The oil outlet surface has a strip-shaped notch that connects to the opening of the oil return groove for oil return.

[0007] Furthermore, the difference L between the outer edge length of the oil outlet and the outer edge length of the oil return groove is 6 to 15 mm, and the inclination angle of the guide slope of the oil outlet is 25° to 35°. The diameter R of the connecting part is 15mm to 20mm.

[0008] Furthermore, the oil outlet and return oil trough have a ceramic layer, a stainless steel layer, or a plastic coating on the surfaces that come into contact with the edible oil.

[0009] Furthermore, the outer edge of the return oil groove is evenly distributed with guide protrusions, which are used to guide the return oil into the oil reservoir along the return oil groove.

[0010] Furthermore, a sealing part is provided inside the end of the connecting part near the oil outlet of the oil can. The sealing part is protruding and abuts against the oil outlet of the oil can to prevent oil leakage when tilted.

[0011] The oil dispenser provided by this utility model includes the above-mentioned spout, body, lid and handle; The spout is located on one side of the pot body. The spout extends upward along the outer side of the pot body to form the oil outlet. The spout is connected to the spout through a connecting part. The handle is fixed to the other side of the pot body away from the spout. The lid is detachable and fits onto the top of the pot body, and the lid and the pot body are sealed together.

[0012] Furthermore, the body of the teapot is narrower at the top and wider at the bottom, with a height of 150-200mm, a bottom diameter of 80-100mm, and a top diameter of 40-50mm.

[0013] Furthermore, the bottom of the pot body is provided with a ring of anti-slip raised ridges; the side wall of the pot body is provided with oil level scale lines distributed along the height direction.

[0014] Furthermore, the handle is arc-shaped with an arc of 120° to 150°; the inner wall of the handle is provided with evenly distributed anti-slip textures. The outer wall of the handle is wrapped with heat-insulating silicone.

[0015] Furthermore, the lid includes a lid body and a sealing ring; The sealing ring is fixed to the bottom side wall of the cover, and the sealing ring is made of silicone.

[0016] Beneficial effects: The oil spout and oil container provided by this utility model form a sealed fit with the oil outlet end of the oil container through a gradually changing radial diameter sleeve at the connecting part, preventing oil from overflowing from the connecting position when pouring. The funnel-shaped oil return groove expands the oil collection range, collecting the oil residue left along the oil outlet. The oil residue at the oil outlet flows into the oil return groove along the oil outlet wall; while the guide slope inclined towards the connecting part at the oil outlet forms a natural flow slope. After pouring, the residual oil will automatically flow to the oil return groove along the guide slope, merge with the oil residue, and then quickly flow back into the oil container through the strip-shaped notch, reducing the retention of oil on the outer wall of the oil outlet. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the anti-oil-sucking spout provided in an embodiment of the present utility model; Figure 2 A cross-sectional view of the oil return groove in the spout of the anti-oil-sucking device provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of an oil can that prevents oil from dripping, provided in an embodiment of this utility model.

[0019] Icons: 1-Connecting part; 101-Sealing part; 2-Oil return groove; 201-Guide protrusion; 3-Oil outlet; 4-Strip notch; 5-Bottle body; 501-Bottle mouth; 502-Anti-slip ridge; 503-Oil level scale; 6-Bottle lid; 601-Lid body; 602-Sealing ring; 7-Bottle handle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] Example 1 like Figure 1 As shown, this utility model provides an oil-resistant spout, comprising: an integrally formed connecting part 1, an oil return groove 2, and an oil outlet 3; The radial diameter of one end of the connecting part 1 gradually decreases so as to fit onto the oil outlet end of the oil can. The other end of the connecting part 1 is provided with an oil return groove 2. The oil return groove 2 is funnel-shaped. The annular opening end of the oil return groove 2 extends outward to form an oil outlet 3. The surface of the oil outlet 3 is a guide slope inclined towards the connecting part 1. The vertical line between the end of the oil outlet 3 and the ground is greater than the vertical line between the outer edge of the oil return groove 2 and the ground. The surface of the oil outlet 3 has a strip-shaped notch 4, which connects to the opening of the oil return groove 2 for oil return.

[0028] Specifically, the connecting part 1 has a hollow tubular structure. Its end furthest from the return oil groove 2, i.e., the sleeve end, tapers axially towards the end, forming a conical surface that fits the inner wall of the oil reservoir's outlet end. This conical surface achieves a tight fit with the oil reservoir's outlet end through an interference fit. The end of the connecting part 1 closest to the return oil groove 2 is integrally connected to the bottom edge of the return oil groove 2, with a rounded transition at the connection point. The return oil groove 2 is trumpet-shaped, with its inner wall gradually expanding outwards from the connecting part 1 towards the opening end. The annular opening edge of the return oil groove 2 extends axially outwards to form an oil outlet 3. The top surface of the oil outlet 3 is a guide slope inclined towards the connecting part 1, and the vertical distance between the end of the oil outlet 3 furthest from the return oil groove 2 and the ground is greater than the vertical distance between the outer edge of the annular part of the return oil groove 2 and the ground. A strip-shaped notch 4 is formed at the oil outlet 3, with a length consistent with the width of the oil outlet 3. The strip-shaped notch 4 extends to the inner wall of the annular opening of the return oil groove 2, forming a return oil channel.

[0029] The integrally formed connecting part 1, oil return groove 2 and oil outlet 3 avoid the problem of oil leakage from the joint; the tapered contraction of the connecting part 1 makes it fit more tightly with the oil outlet end of the oil can, and the arc transition of the connecting position enhances the sealing performance and prevents oil from overflowing from the connecting position when pouring oil.

[0030] The funnel-shaped structure of the oil return trough 2 expands the oil collection range. Since the vertical line between the end of the oil outlet 3 and the ground is greater than the vertical line between the outer edge of the oil return trough 2 and the ground, it can collect the residual oil flowing from the wall of the oil outlet 3 without affecting the oil pouring. The guide slope of the oil outlet 3 forms a natural flow slope. After the oil pouring is completed, the remaining oil can automatically flow along the slope to the strip-shaped notch 4, and then quickly merge with the oil collected in the oil return trough 2 through the notch and flow into the oil can, reducing the oil retention on the outer wall of the oil outlet 3.

[0031] Example 2 In the embodiments of this utility model, the difference L between the outer edge length of the oil outlet 3 and the outer edge length of the oil return groove 2 is 6 to 15 mm, preferably 8 mm, and the inclination angle of the guide slope of the oil outlet 3 is 25° to 35°, preferably 30°. The diameter R of the connecting part 1 is 15mm to 20mm, preferably 20mm.

[0032] The oil outlet 3 and the oil return groove 2 have a ceramic layer, a stainless steel layer or a plastic coating on the surfaces that come into contact with the edible oil.

[0033] Specifically, the difference L between the outer edge length of the oil outlet 3 and the outer edge length of the return oil tank 2 (i.e., the distance from the edge of the opening end of the return oil tank 2 to the free end of the oil outlet 3) is 6-15mm, ensuring that the oil outlet 3 extends long enough to facilitate oil pouring, while also allowing residual oil to flow smoothly to the return oil tank 2. The guide slope of the oil outlet 3 is inclined at an angle of 25° to 35° to the horizontal plane. At this angle, the oil is less likely to splash when flowing, and the residual oil flows back quickly along the slope.

[0034] Furthermore, the guide slope of the oil outlet 3, the inner wall of the strip-shaped notch 4, the inner side wall and bottom of the oil return groove 2, and the inner wall of the connecting part 1—all surfaces in contact with edible oil—are coated with a 0.1–0.3 mm ceramic layer, stainless steel layer, plastic coating, or other material coating. Other material coatings are made of food-safe materials. This creates a dual anti-oil-sticking effect through physical drainage and material non-sticking, extending the lifespan of the spout and reducing the frequency of cleaning.

[0035] Example 3 In embodiments of this utility model, such as Figure 2 As shown, guide protrusions 201 are evenly distributed circumferentially along the outer edge of the flared oil return groove 2. The guide protrusions 201 are used to guide the return oil into the oil reservoir along the oil return groove 2.

[0036] A sealing part 101 is provided inside the end of the connecting part 1 near the oil outlet of the oil can. The sealing part 101 is protruding and abuts against the oil outlet of the oil can to prevent oil leakage when tilted.

[0037] Specifically, multiple guide protrusions 201 are evenly distributed circumferentially on the trumpet-shaped outer edge of the oil return groove 2; the guide protrusions 201 are hemispherical protrusions, their protrusion direction is towards the inner side of the oil return groove 2, and the surface of the protrusions smoothly transitions with the inner wall of the oil return groove 2. The end of the connecting part 1 near the oil outlet end of the oil can is provided with a ring-shaped sealing part 101; the sealing part 101 is a protruding structure, and when fitted, the sealing part 101 can form an interference fit with the outer wall of the oil outlet end of the oil can.

[0038] The guide protrusions 201, with their circumferentially evenly distributed raised structures, guide the residual oil in the return oil groove 2. When the oil flows back along the funnel-shaped inner wall of the return oil groove 2, the protrusions break the uniform distribution of the oil within the groove, forcing the oil to gather in the gaps between adjacent protrusions, forming small, directional oil flows. This prevents the oil from stagnating at the corners of the return oil groove 2 due to surface tension. The silicone seal 101, through its abutment, generates elastic deformation, tightly filling the fitting gaps and effectively preventing oil leakage from the connection point during pouring.

[0039] Example 4 In embodiments of this utility model, such as Figure 3 As shown, this utility model also provides an oil dispenser, including: the above-mentioned spout, body 5, lid 6 and handle 7; A spout 501 is provided on one side of the pot body 5. The spout 501 extends upward along the outer side of the pot body 5 to form an oil outlet. The spout is connected to the spout 501 through the connecting part 1. The handle 7 is fixed to the other side of the pot body 5 away from the spout. The lid 6 is detachable and fits onto the top of the pot body 5, and the lid 6 is sealed to the pot body 5.

[0040] Specifically, the body 5 is made of food-grade injection molding. On the left side of the body 5, away from the handle 7, a spout 501 is provided at the upper middle position. The spout 501 extends upward along the outer side of the body 5 to form an oil outlet. The angle between the spout 501 and the axis of the body 5 is 45°. The spout 501 is a hollow tube and matches the tapered constriction end of the spout connection part 1. The spout and the spout 501 are connected by interference fit.

[0041] The handle 7 has an arc-shaped structure; it is fixed to the right side of the body 5 by two countersunk screws, with the fixing position flush with the height of the spout 501. The lid 6 is a circular flip-top with a raised handle on the top; the inner edge of the lid 6 has a ring-shaped silicone sealing gasket, which is installed corresponding to the opening at the top of the body 5. When closed, the sealing gasket fits tightly against the inner wall of the opening at the top of the body 5, forming a seal.

[0042] The inclined oil outlet end of the oil pot body 5 and the conical sleeve structure of the spout connection part 1 form a continuous flow channel. The flow path of the oil from the pot body 5 to the spout has no obvious turning point. Combined with the guide slope of the oil outlet 3, turbulence and splashing can be reduced. At the same time, the interference fit between the oil outlet end and the spout and the sealing part 101 of the connection part 1 provides double protection against leakage at the connection position, preventing the problem of oil spillage into the pot body.

[0043] The lid 6 uses a silicone sealing gasket to block external air and dust from contacting the internal oil, delaying the oxidation and deterioration of the oil, and preventing the oil from overflowing from the top opening when pouring.

[0044] Example 5 In the embodiments of this utility model, the body 5 is narrower at the top and wider at the bottom. The height of the body 5 is 150-200mm, preferably 200mm. The diameter of the bottom of the body 5 is 80-100mm, preferably 100mm. The diameter of the top of the body 5 is 40-50mm, preferably 50mm.

[0045] The bottom of the pot body 5 is provided with a ring of anti-slip raised ridges 502; the side wall of the pot body 5 is provided with oil level scale lines 503 distributed along the height direction.

[0046] The handle 7 is arc-shaped, with an arc of 120° to 150°, preferably 135°; the inner wall of the handle 7 is provided with evenly distributed anti-slip textures; the outer wall of the handle 7 is covered with heat-insulating silicone.

[0047] The lid 6 includes a lid body 601 and a sealing ring 602; The sealing ring 602 is fixed to the bottom side wall of the cover 601, and the sealing ring 602 is made of silicone.

[0048] Specifically, the body of the teapot 5 is narrower at the top and wider at the bottom, concentrating the center of gravity at the lower part and making it less likely to tip over when placed. A non-slip raised ridge 502 is integrally formed with the bottom of the teapot body 5. Oil level markings 503 are evenly engraved along the height of the side wall of the teapot body 5, covering the total volume of the teapot body 5 and ensuring clear visibility under different lighting conditions.

[0049] The handle 7 features an arc-shaped structure that fits the palm of your hand; the inner wall of the handle 7 has evenly distributed wave-shaped anti-slip textures, and the outer wall of the handle 7 is entirely covered with a layer of food-grade heat-insulating silicone to increase friction and prevent it from slipping off when held.

[0050] The lid 6 has a circular flat plate structure with a raised cylindrical handle at the top center. The sealing ring 602 is an annular structure and is fixed by an annular groove on the bottom side wall of the lid 601. The outer diameter of the sealing ring 602 is matched with the inner diameter of the inner wall of the top of the pot body 5, and can form an interference fit with the inner wall after the lid is closed.

[0051] The shape of the pot body 5, which is narrower at the top and wider at the bottom, ensures sufficient oil storage capacity and improves stability by lowering the center of gravity, preventing tipping over when pouring oil due to a shift in the center of gravity. The anti-slip ridges 502 on the bottom increase friction. The oil level scale 503 allows users to intuitively know the remaining oil level and avoids blindly adding oil and causing spills.

[0052] The handle 7, combined with the wavy anti-slip texture on the inner wall, reduces the pressure area on the wrist when pouring oil, thus reducing soreness after prolonged use. The heat-insulating silicone on the outer wall effectively blocks the heat transferred from the pot when filling it with warm cooking oil, preventing burns to the hands. The lid 6 ensures a tight seal when closed, preventing dust and moisture from entering the pot and causing the oil to oxidize and deteriorate.

[0053] Based on the above embodiments, the specific working process of the anti-oil-slip spout and oil can provided by this utility model is as follows: When in use, the user holds the handle 7 and tilts the body 5. The cooking oil in the body 5 flows into the spout connection 1 through the upward-sloping spout 501 on the side. The sealing part 101 in the connection 1 abuts against the inner wall of the spout 501 to prevent the oil from leaking out of the connection. The oil then flows along the connection 1 to the oil outlet 3. Guided by the inclined guide surface of the oil outlet 3, it flows smoothly to the outside. During the process, the oil level scale 503 on the side wall of the body 5 can intuitively show the remaining oil level.

[0054] After the oil is poured out, the oil residue on the surface of the oil outlet 3 slides down the wall naturally and is collected by the funnel-shaped oil return groove 2. The oil gathers in the groove and merges with the remaining oil flowing back from the oil outlet 3 through the strip-shaped notch 4 on the surface of the oil outlet 3, flowing into the pot body 5, thus preventing the oil from dripping and contaminating the pot body 5.

[0055] Finally, it should be noted that 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 spout designed to prevent oil dripping, characterized in that, include: One-piece molded connecting part (1), oil return groove (2) and oil outlet (3); The radial diameter of one end of the connecting part (1) gradually decreases to fit onto the oil outlet of the oil can. The other end of the connecting part (1) is provided with an oil return groove (2). The oil return groove (2) is funnel-shaped. The annular opening end of the oil return groove (2) extends outward to form the oil outlet (3). The surface of the oil outlet (3) is a guide slope inclined towards the connecting part (1). The vertical line between the end of the oil outlet (3) and the ground is greater than the vertical line between the outer edge of the oil return groove (2) and the ground. The oil outlet (3) has a strip-shaped notch (4) on its surface, which is connected to the opening of the oil return groove (2) for oil return.

2. The anti-oil-sucking spout according to claim 1, characterized in that, The difference L between the outer edge length of the oil outlet (3) and the outer edge length of the oil return groove (2) is 6 to 15 mm, and the inclination angle of the guide slope of the oil outlet (3) is 25° to 35°. The diameter R of the connecting part (1) is 15mm to 20mm.

3. The anti-oil-sucking spout according to claim 1, characterized in that, The oil outlet (3) and the oil return groove (2) are provided with a ceramic layer, a stainless steel layer or a plastic coating on the contact surface with the edible oil.

4. The anti-oil-sucking spout according to claim 1, characterized in that, The outer edge of the return oil groove (2) is uniformly distributed with guide protrusions (201) in a circumferential direction. The guide protrusions (201) are used to guide the return oil along the return oil groove (2) into the oil pot.

5. The anti-oil-sucking spout according to claim 1, characterized in that, The connecting part (1) has a sealing part (101) inside the end near the oil outlet of the oil can. The sealing part (101) is protruding and abuts against the oil outlet of the oil can to prevent oil leakage when poured.

6. An oil dispenser, characterized in that, include: The spout, body (5), lid (6), and handle (7) of any one of claims 1-5; The body (5) of the pot has a spout (501) on one side. The spout (501) extends upward along the outside of the body (5) to form an oil outlet. The spout is connected to the spout (501) through the connecting part (1). The handle (7) is fixed to the other side of the body (5) away from the spout. The lid (6) is detachably fitted onto the top of the body (5) and is sealed to the body (5).

7. The oil dispenser according to claim 6, characterized in that, The body of the pot (5) is narrow at the top and wide at the bottom. The height of the body of the pot (5) is 150-200mm, the diameter of the bottom of the body of the pot (5) is 80-100mm, and the diameter of the top of the body of the pot (5) is 40-50mm.

8. The oil dispenser according to claim 7, characterized in that, The bottom of the pot body (5) is provided with a ring of anti-slip ridges (502); the side wall of the pot body (5) is provided with oil level scale lines (503) distributed along the height direction.

9. The oil dispenser according to claim 6, characterized in that, The handle (7) is arc-shaped, and the arc of the handle (7) is 120° to 150°; the inner sidewall of the handle (7) is provided with uniformly distributed anti-slip textures; The outer wall of the handle (7) is wrapped with heat-insulating silicone.

10. The oil dispenser according to claim 6, characterized in that, The lid (6) includes a lid body (601) and a sealing ring (602). The sealing ring (602) is fixed to the bottom side wall of the cover (601), and the sealing ring (602) is made of silicone.

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