Feeding tool

Abstract

The utility model discloses a feeding tool. A cavity isolated from the outside is formed in the feeding tool. A feeding hole communicated with the cavity is formed in the top wall of the feeding tool, and a discharging hole communicated with the cavity is formed in the bottom wall of the feeding tool; the charging hole is used for being communicated with an opening of a reagent bottle in a sealing manner, and the discharging hole is used for being communicated with an opening of a reaction container to be charged; the bottom wall of the feeding tool is propped against the edge of the opening of the reaction container; the feeding tool is further provided with a ventilation channel which is communicated with the cavity and used for being balanced with external air pressure. By adopting the feeding tool, the problems of liquid splashing and volatilization in the reagent adding process are reduced, the pollution to the surrounding environment is reduced, and the injury to experimenters is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of experimental equipment, in particular to a feeding tool. Background Art

[0002] In small-scale chemical experiments or university chemical experiments, liquid reagents are often added to reaction vessels using dosing tools. However, traditional funnels have some shortcomings. For example, during the dosing process, liquids can easily splash, causing injuries to experimenters or contaminating the experimental environment. Furthermore, some volatile reagents can evaporate into the air during the dosing process, resulting in not only reagent waste but also serious health hazards to experimenters. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a feeding tool to solve the technical problems of liquid splashing and volatilization that may exist in the process of adding reagents using a funnel in the prior art, reduce pollution to the surrounding environment, and avoid harm to experimenters.

[0004] To achieve at least one of the above objectives, this application provides the following technical solutions:

[0005] An embodiment of the present application provides a feeding tool, wherein a cavity isolated from the outside is provided inside the feeding tool;

[0006] A feeding port communicating with the cavity is provided on the top wall of the feeding tool, and a discharge port communicating with the cavity is provided on the bottom wall of the feeding tool;

[0007] The feeding port is used to be sealed and communicated with the opening of the reagent bottle, and the discharging port is used to be communicated with the opening of the reaction container to be added;

[0008] The bottom wall of the feeding tool abuts against the edge of the opening of the reaction container;

[0009] The feeding tool is further provided with a ventilation channel which is in communication with the cavity and is used for balancing the external air pressure.

[0010] In some embodiments, a breathable gap is provided between the bottom wall of the feeding tool and the opening edge of the reaction container, and the breathable gap is the breathable channel.

[0011] In some embodiments, an elastic pad is fixedly connected to the bottom wall of the feeding tool, and the discharge port is sealed and connected to the opening of the reaction container through the elastic pad;

[0012] A ventilation structure is provided on the side wall of the feeding tool, and the ventilation structure forms the ventilation channel.

[0013] In some embodiments, the breathable structure includes an adjustment member for adjusting the size of the breathable channel.

[0014] In some embodiments, the ventilation structure further comprises a ventilation tube fixedly connected to the side wall of the feeding tool, the ventilation tube is communicated with the cavity, and ventilation holes are opened on the side wall of the ventilation tube;

[0015] The adjusting member is inserted into the end of the vent tube away from the feeding tool to block the opening of the vent tube away from the feeding tool;

[0016] The adjusting member blocks part of the air holes and can slide relative to the air pipe to adjust the size of the blocked air holes.

[0017] In some embodiments, a retaining ring is provided in the cavity, the retaining ring is fixedly connected to the bottom wall of the feeding tool, and is arranged around the discharge port.

[0018] In some embodiments, a drainage structure is fixedly connected to the inner side of the retaining ring, and the upper end of the drainage structure is expanded and the lower end is narrowed;

[0019] The edge of the flared opening is fixedly connected to the inner side wall of the retaining ring and has a smooth transition;

[0020] The lower end of the necking is located above the bottom wall of the feeding tool, or is flush with the bottom wall of the feeding tool.

[0021] In some embodiments, the cavity includes a storage cavity, a splash-proof cavity, and a connecting channel;

[0022] The feeding port is located at the top of the storage cavity, and the discharging port is located at the bottom of the anti-splash cavity;

[0023] The cross-sectional size of the connecting channel is smaller than the cross-sectional size of the discharge cavity and the cross-sectional size of the anti-splash cavity;

[0024] When the feeding tool includes a gas permeable member, the formed gas permeable channel is communicated with the side wall of the anti-splash chamber.

[0025] In some embodiments, the feeding tool includes an upper body, a lower body, and a bottom support connected in sequence;

[0026] The feeding port is located on the upper side wall of the upper body, and the discharging port is located on the bottom wall of the bottom support;

[0027] The lower body is detachably and sealedly connected to the base.

[0028] In some embodiments, the upper body includes a dividing funnel and a splash-proof cover, wherein the splash-proof cover is located at one end of the flared opening of the dividing funnel and is sealed to the flared end of the dividing funnel;

[0029] An anti-splash film is provided on the inner side wall of the distribution funnel;

[0030] The constricted end of the dividing funnel is in communication with the lower body, and the constricted end of the dividing funnel is connected to a control valve, and the control valve controls the opening and closing of the passage between the dividing funnel and the lower body;

[0031] The feeding port is arranged on the anti-splash cover.

[0032] In the above technical solution, the feeding tool is used for auxiliary feeding, and the cavity is isolated from the outside. Even if the reagent splashes on each section of the path from the feeding port to the cavity, in the cavity, and from the cavity through the discharge port to the reaction vessel, the splashed reagent will be kept in a space relatively isolated from the external environment; and the air permeable channel is only provided to balance the internal and external pressures. Compared with the existing funnel structure, it can also prevent most of the reagents from splashing and volatilizing and entering the external environment; in this way, the pollution to the surrounding environment caused by the splashing and volatilization of the reagents during the addition process can be reduced, and the risk of harm to the safety of the experimenters can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 A schematic diagram of the overall structure of the feeding tool provided in some embodiments of the present application;

[0035] Figure 2 Some embodiments of this application provide Figure 1 A magnified schematic diagram of part A;

[0036] Figure 3 A schematic diagram of the matching relationship between the lower body and the base provided in some embodiments of the present application;

[0037] Figure 4 Some embodiments of this application provide Figure 3 Schematic diagram of the enlarged portion B.

[0038] The reference numerals are as follows:

[0039] 10. Cavity, 101. Storage cavity, 102. Anti-splash cavity, 103. Connecting channel;

[0040] 20. Feeding port;

[0041] 30. Discharge port;

[0042] 40. Ventilation channel;

[0043] 50. Elastic pad;

[0044] 60. Ventilation structure, 601. Ventilation tube, 602. Adjustment member, 603. Ventilation hole;

[0045] 70, retaining ring, 701, drainage structure;

[0046] 1. Upper body, 11. Dividing funnel, 12. Anti-splash cover, 13. Anti-splash film;

[0047] 2. lower body, 21. convex edge;

[0048] 3. Bottom support, 31. Groove. DETAILED DESCRIPTION

[0049] The present application will be further described in detail below through the accompanying drawings and examples, through which the features and advantages of the present application will become more clear and distinct.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by technicians in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0051] The phrase "embodiment" mentioned in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0052] The term "exemplary" is used herein to mean "serving as an example, embodiment, or illustration." Any embodiment described as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0053] In the description of this application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary and secondary relationship of the indicated technical features.

[0054] In the description of this application, the technical term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0055] In the description of this application, the orientations or positional relationships indicated by technical terms such as "upper", "lower", "inside", "outside", "front", "back", "left", "right", "top", and "bottom" are orientations or positional relationships based on the working state of this application. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0056] In the description of this application, unless otherwise specified or limited, technical terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0057] In the description of this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0058] In the description of the present application, “a plurality of” means two or more (including two), unless otherwise clearly and specifically defined.

[0059] In the description of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, and other dimensions of the integrated device shown in the drawings are merely illustrative and do not constitute any limitation on this application.

[0060] As part of the creative concept of this application, before describing the embodiments of this application, it is necessary to analyze the causes of the problems in related technologies such as liquid splashing and volatilization causing pollution to the surrounding environment and harm to experimenters, and obtain the technical solutions of the embodiments of this application through reasonable analysis.

[0061] In the related art, during small-scale chemical experiments or university chemical experiments, it is often necessary to use a feeding tool to add liquid reagents to the reaction vessel. However, traditional feeding tools have some shortcomings. For example, liquid splashing is likely to occur during the feeding process, causing injuries to experimenters or pollution of the experimental environment. At the same time, some volatile reagents will also evaporate into the air during the feeding process, which not only causes waste of reagents but may also cause serious harm to the health of experimenters. The above-mentioned splashing and evaporation phenomena are, on the one hand, caused by the flared part on the upper side of the funnel, where the liquid is directly poured onto the inner wall of the funnel, resulting in splashing. In addition, there will also be problems of liquid splashing or volatile substances overflowing from the opening where the funnel meets the reaction vessel.

[0062] To this end, the present application provides a feeding tool to solve the technical problems in the prior art of adding materials into a reaction vessel, causing splashing and volatilization, causing pollution to the surrounding environment or harm to experimenters.

[0063] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings. The technical features involved in the different implementation modes of the present application described below can be combined with each other as long as there is no conflict between them.

[0064] In the embodiment of the present application, a feeding tool is provided, such as Figure 1 As shown, the feeding tool as a whole is a hollow structure with a cavity 10 inside. The cavity 10 inside the feeding tool is isolated from the outside. In addition, a feeding port 20 connected to the cavity 10 is provided on the top wall of the feeding tool, and a discharge port 30 connected to the cavity 10 is provided on the bottom wall. The feeding port 20 is used to be sealed and connected to the opening of the reagent bottle, where the reagent bottle refers to a container storing reagents added to the reaction vessel. The bottom wall of the feeding tool abuts the edge of the opening of the reaction vessel, and the discharge port 30 is arranged opposite the opening of the reaction vessel to be added to achieve communication. In addition, the feeding tool is also provided with a vent channel 40 connected to the cavity 10 for balancing with the external air pressure.

[0065] When using this feeding tool to assist in adding the corresponding reagent to the reaction vessel, the feeding tool is placed on the opening of the reaction vessel, with its bottom wall abutting the edge of the reaction vessel opening, forming a vertical channel from the feeding port 20 to the discharge port 30 through the cavity 10. The experimenter supports the feeding tool to maintain its position, or sets up an auxiliary positioning tool to keep the feeding tool in a fixed position; then, a reagent bottle is connected to the feeding port 20, and the reagent is added to the cavity 10. The reagent is discharged through the cavity 10 to the discharge port 30 and added to the reaction vessel.

[0066] Among them, the connection between the reagent bottle and the feeding port 20, when actually used, can be provided with a reagent bottle separately for adding reagents, the specific amount of reagent to be added is pre-added into the corresponding reagent bottle, and then the reagent bottle is directly inverted at the feeding port 20 on the feeding tool; or a valve that can be controlled to open and close can be provided at the opening of the reagent bottle, and after completing the connection between the reagent bottle and the feeding port 20, the valve is opened so that the reagent can be stably added to the feeding tool. In addition, a pipeline with power can also be provided, the pipeline connects the reagent and the feeding port 20, and the pipeline is connected to a pump body, which provides power to pump the reagent to the feeding port 20.

[0067] In the above technical solution, the cavity 10 is isolated from the outside, the feeding port 20 is sealed and connected to the opening of the reagent bottle, and the discharge port 30 is connected to the opening of the reaction vessel. At the same time, the bottom wall of the feeding tool is in contact with the edge of the reaction vessel opening. In this way, for each stage of the reagent circulation path, from the reagent bottle through the feeding port 20 to the cavity 10, in the cavity 10, and from the cavity 10 through the discharge port 30 to the reaction vessel, in the above-mentioned various stages, even if the reagent splashes, the splashed reagent will be kept in a space relatively isolated from the external environment; and the air permeable channel 40 provided is only for balancing the internal and external pressures. Compared with the existing funnel structure, it can also prevent most of the reagents from splashing and volatilizing from entering the external environment. In this way, the pollution caused to the surrounding environment by the splashing and volatilization of the reagents in the process of adding the reagents can be reduced, and the risk of harm to the safety of the experimenters can be reduced.

[0068] refer to Figure 1 An elastic pad 50 is fixedly connected to the bottom wall of the feeding tool. Through the elastic pad 50, the bottom wall of the feeding tool and the opening edge of the reaction container are flexibly connected, so that the discharge port 30 is sealed and connected to the opening of the reaction container.

[0069] refer to Figure 1 and Figure 2A ventilation structure 60 is connected to the side wall of the feeding tool, and the ventilation channel 40 is formed by the ventilation structure 60. Specifically, the ventilation structure 60 includes a ventilation tube 601 fixedly connected to the side wall of the feeding tool and an adjusting member 602 disposed on the ventilation tube 601. The ventilation tube 601 is in communication with the cavity 10, and a ventilation hole 603 is formed on the side wall of the ventilation tube 601. The adjusting member 602 is a columnar structure that is inserted into the opening of the ventilation tube 601 at the end away from the feeding tool, blocking the opening of the ventilation tube 601 at the end away from the feeding tool, forming the ventilation channel 40 from the ventilation hole 603 to the cavity 10. The adjusting member 602 blocks part of the ventilation hole 603 and can slide relative to the ventilation tube 601 to adjust the size of the blocked ventilation hole 603, thereby adjusting the size of the ventilation channel 40.

[0070] By adjusting the size of the air permeable channel 40 , the speed at which the closed space formed inside the feeding tool is balanced with the external air pressure can be changed, thereby adjusting the speed at which the reagent is added therein.

[0071] In some other embodiments, the specific form of the air permeable channel 40 can also be adjusted according to actual needs; illustratively, a plurality of guide grooves are provided on the bottom wall of the feeding tool, and when the bottom wall is in contact with the edge of the opening of the reaction container, an air permeable channel 40 connecting the cavity 10 and the outside is formed through the provided guide grooves; the pressure balance is maintained during the addition of reagents to ensure smooth addition of reagents.

[0072] In addition, reference Figure 3 A retaining ring 70 is provided in the chamber 10. The retaining ring 70 is fixedly connected to the bottom wall of the feeding tool and is arranged around the discharge port 30. In this way, when adding reagents to the reaction vessel, the reagents added to the reaction vessel are prevented from splashing onto the bottom of the feeding tool. If splashing occurs, the reagents will splash onto the inner side of the retaining ring 70 and then drip back into the reaction vessel along the surface of the retaining ring 70.

[0073] A drainage structure 701 is fixedly connected to the inner side of the retaining ring 70. The upper end of the drainage structure 701 is flared, and the lower end is constricted. The edge of the flared edge is fixedly connected to the inner side wall of the retaining ring 70 and smoothly transitions to the side wall of the retaining ring 70. One end of the constricted end of the drainage structure 701 is located above the bottom wall of the feeding tool, or is flush with the bottom wall of the feeding tool. The term "above the bottom wall of the feeding tool" here refers to the side of the bottom wall facing the cavity 10. In this way, when the feeding tool is placed directly on the table, it can be placed more conveniently and stably.

[0074] The drainage structure 701 provided can improve the smoothness of adding reagents into the reaction container, thereby preventing some reagents from splashing onto the baffle ring 70 and flowing out from between the feeding tool and the reaction container during the process of dripping along the surface of the baffle ring 70, or some reagents from remaining on the bottom wall of the feeding tool or the reaction container, which needs to be cleaned after the feeding is completed, thereby improving the convenience of use.

[0075] refer to Figure 1 The chamber 10 comprises three parts: a storage chamber 101, a splash-proof chamber 102, and a connecting passage 103. The storage chamber 101 and the splash-proof chamber 102 are connected via the connecting passage 103. The feed port 20 is located at the top of the storage chamber 101, and the discharge port 30 is located at the bottom of the splash-proof chamber 102. The cross-sectional dimensions of the connecting passage 103 are smaller than those of the storage chamber 101 and the splash-proof chamber 103. The air permeable passage 40 formed by the air permeable structure 60 is directly connected to the splash-proof chamber 102.

[0076] In some other embodiments, the cavity 10 may be cylindrical or have other shapes as a whole.

[0077] refer to Figure 1 and Figure 3 The feeding tool includes an upper main body 1, a lower main body 2 and a bottom support 3 connected in sequence. The cavity inside the upper main body 1 is the storage cavity 101, the lower main body 2 and the bottom support 3 are surrounded to form a splash-proof cavity 102, and the upper main body 1 and the lower main body 2 are connected to form a connecting channel 103.

[0078] Specifically, the upper body 1 includes a separating funnel 11 and a splash-proof cover 12. The structure of the separating funnel 11 is the same as that of existing funnels. The splash-proof cover 12 is located on one side of the flared opening of the separating funnel 11 and is sealed to the flared end of the separating funnel 11. The feeding port 20 is a through-hole provided on the splash-proof cover 12. When adding reagents, the splash-proof cover 12 can be connected to the reagent bottle first, and then the splash-proof cover 12 and the reagent bottle can be installed on the separating funnel 11 together.

[0079] The constricted end of the funnel 11 is connected to the lower body 2 to form a connecting channel 103, and the location where the funnel 11 is connected to the lower body 2 is sealed to achieve a sealed connection between the two. In other embodiments, the upper body 1 and the lower body 2 can also be provided as an integral structure.

[0080] For example, a control valve is connected to the constricted end of the dividing funnel 11 , and the opening and closing of the passage from the dividing funnel 11 to the lower main body 2 is controlled by the control valve.

[0081] refer to Figure 1A splash-proof film 13 is provided on the inner sidewall of the separating funnel 11. The splash-proof film 13 is made of perfluororubber. The film structure made of perfluororubber has a low surface energy. When the reagent drips onto the splash-proof film 13, the drips tend to aggregate together rather than spread on the surface of the splash-proof film 13. As the droplets continue to drip, the subsequent droplets falling on the formed film and causing serious splashing are also reduced. At the same time, the perfluororubber material also has good corrosion resistance, high temperature resistance, and low temperature resistance. In other embodiments, other materials with better corrosion resistance and hydrophobicity can also be selected.

[0082] The lower body 2 is an inverted funnel structure with its flared opening facing downward, and is sealedly connected to the opening of the base 3 to form a splash-proof cavity 102; correspondingly, the air vent 601 is fixedly connected to the side wall of the lower body 2 and communicates with the splash-proof cavity 102.

[0083] When the feeding tool is composed of an upper main body 1, a lower main body 2 and a base 3, the above-mentioned retaining ring 70 is fixedly connected to the bottom wall of the base 3, and the base 3 and the lower main body 2 are detachably connected, which makes it easier to perform cleaning and other operations inside the base 3.

[0084] It should be explained that the sealing connections referred to in the embodiments of the present application, such as the sealing connection between the dividing funnel 11 and the splash-proof cover 12, the sealing connection between the lower main body 2 and the bottom support 3, etc., all use flexible sealing gaskets to achieve flexible contact between the connected components; in the connected state, the two connected components apply a certain pressure to the flexible sealing gasket at the connection position, so that sealing is achieved at the connection position; illustratively, the flexible sealing gasket is made of rubber.

[0085] refer to Figure 3 and Figure 4 Taking the sealed connection between the lower body 2 and the base 3 as an example, a protrusion 21 is provided on the edge of the lower opening of the lower body 2, and a groove 31 is provided on the edge of the upper opening of the base 3 to match the protrusion 21. When the two are connected, the protrusion 21 is locked in the groove 31. A flexible sealing gasket is fixedly connected to the protrusion 21 and / or in the groove 31. When the protrusion 21 is locked in the groove 31, the flexible sealing gasket realizes the sealed connection between the lower body 2 and the base 3.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A feeding tool, characterized in that: The feeding tool is provided with a cavity isolated from the outside; A feeding port communicating with the cavity is provided on the top wall of the feeding tool, and a discharge port communicating with the cavity is provided on the bottom wall of the feeding tool; The feeding port is used to be sealed and communicated with the opening of the reagent bottle, and the discharging port is used to be communicated with the opening of the reaction container to be added; The bottom wall of the feeding tool abuts against the edge of the opening of the reaction container; The feeding tool is further provided with a ventilation channel which is in communication with the cavity and is used for balancing the external air pressure.

2. The feeding tool according to claim 1, characterized in that A breathable gap is provided between the bottom wall of the feeding tool and the opening edge of the reaction container, and the breathable gap serves as the breathable channel.

3. The feeding tool according to claim 1, characterized in that An elastic pad is fixedly connected to the bottom wall of the feeding tool, and the discharge port is sealed and communicated with the opening of the reaction container through the elastic pad; A ventilation structure is provided on the side wall of the feeding tool, and the ventilation structure forms the ventilation channel.

4. The charging tool according to claim 3, characterized in that The breathable structure includes an adjusting member for adjusting the size of the breathable channel.

5. The charging tool according to claim 4, characterized in that The ventilation structure further includes a ventilation tube fixedly connected to the side wall of the feeding tool, the ventilation tube is communicated with the cavity, and ventilation holes are opened on the side wall of the ventilation tube; The adjusting member is inserted into the end of the vent tube away from the feeding tool to block the opening of the vent tube away from the feeding tool; The adjusting member blocks part of the air holes and can slide relative to the air pipe to adjust the size of the blocked air holes.

6. The charging tool according to claim 1, characterized in that A retaining ring is provided in the cavity, the retaining ring is fixedly connected to the bottom wall of the feeding tool, and is arranged around the discharge port.

7. The charging tool according to claim 6, characterized in that The inner side of the retaining ring is fixedly connected to a drainage structure, the upper end of the drainage structure is expanded and the lower end is narrowed; The edge of the flared opening is fixedly connected to the inner side wall of the retaining ring and has a smooth transition; The lower end of the necking is located above the bottom wall of the feeding tool, or is flush with the bottom wall of the feeding tool.

8. The charging tool according to any one of claims 1 to 7, characterized in that: The cavity includes a storage cavity, a splash-proof cavity and a connecting channel; The feeding port is located at the top of the storage cavity, and the discharging port is located at the bottom of the anti-splash cavity; The cross-sectional size of the connecting channel is smaller than the cross-sectional size of the discharge cavity and the cross-sectional size of the anti-splash cavity; When the feeding tool includes a gas permeable member, the formed gas permeable channel is communicated with the side wall of the anti-splash chamber.

9. The charging tool according to claim 8, characterized in that The feeding tool comprises an upper body, a lower body and a bottom support which are connected in sequence; The feeding port is located on the upper side wall of the upper body, and the discharging port is located on the bottom wall of the bottom support; The lower body is detachably and sealedly connected to the base.

10. The charging tool according to claim 9, characterized in that The upper body includes a dividing funnel and a splash-proof cover, wherein the splash-proof cover is located at one end of the flared opening of the dividing funnel and is sealed with the flared end of the dividing funnel; An anti-splash film is provided on the inner side wall of the distribution funnel; The constricted end of the dividing funnel is in communication with the lower body, and the constricted end of the dividing funnel is connected to a control valve, and the control valve controls the opening and closing of the passage between the dividing funnel and the lower body; The feeding port is arranged on the anti-splash cover.

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