CN219661450U

CN219661450U - Leak-proof device and hand coffee making device

Info

Publication number: CN219661450U
Application number: CN202320309779.XU
Authority: CN
Inventors: 吴泳林; 廖子明; 朱志刚
Original assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Current assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-09-12
Anticipated expiration: 2033-02-24

Abstract

The application discloses a leakage stopping device and a hand-brewing coffee device, which solve the technical problem of leakage of a filtering device independently used in the prior art. The leakage-stopping device comprises a leakage-stopping shell, a leakage-stopping valve and a leakage-stopping lever assembly, wherein the leakage-stopping shell is provided with a mounting position and a liquid outlet; the leakage-stopping valve comprises a valve core and a first elastic piece, wherein the valve core is movably arranged in the leakage-stopping shell, and two ends of the first elastic piece respectively act on the valve core and the leakage-stopping shell; the leakage-stopping lever assembly comprises a lever and a limiting block movably matched with the middle part of the lever, the limiting block is connected to the leakage-stopping shell, and a first limiting part and a second limiting part for limiting the rotation of the lever are arranged on the limiting block; the first end of the lever extends out of the leak-proof shell, the second end of the lever acts on the valve core, and the lever can be switched between the first limiting part and the second limiting part. The leakage stopping device can be connected with an independently used filter device, and the liquid discharging channel can be opened and closed according to the use requirement, so that the technical problem of leakage after the independent filter device is used is solved.

Description

Leak-proof device and hand coffee making device

Technical Field

The application belongs to the technical field of leakage-stopping devices, and particularly relates to a leakage-stopping device and a hand-brewing coffee device.

Background

The filter devices such as the funnel, the filter screen and the like still have residual water drops after being used, for example, the funnel for making coffee by hand can be taken off after the hand is made, and the residual water drops can be wetted on the table top or the table top.

At present, in a grinding drip coffee machine, an anti-drip device is usually arranged, but the anti-drip device cannot be applied to a filter device such as a funnel and a filter screen which are independently used, and is inconvenient to use.

Disclosure of Invention

The utility model provides a leakage stopping device and a hand-brewing coffee device, which aim to solve the technical problem of leakage after the use of the conventional filtering device.

The utility model adopts a technical scheme that: provided is a leak-stopping device including:

the leakage-proof shell is provided with a mounting position for mounting the filter device and a liquid outlet for communicating the filter device;

the leakage-stopping valve comprises a valve core and a first elastic piece, wherein the valve core is movably arranged in the leakage-stopping shell, and two ends of the first elastic piece respectively act on the valve core and the leakage-stopping shell;

the leakage-stopping lever assembly comprises a lever and a limiting block movably matched with the middle part of the lever, the limiting block is connected to the leakage-stopping shell, and a first limiting part and a second limiting part for limiting the rotation of the lever are arranged on the limiting block; the first end of the lever extends out of the leak-proof shell, and the second end acts on the valve core;

The valve core is arranged on the first end of the lever, and the valve core is arranged on the second end of the lever, wherein the valve core is arranged on the second end of the lever, and the valve core is arranged on the first end of the lever.

According to the technical scheme, the leakage-stopping device provided by the application comprises the leakage-stopping shell, the leakage-stopping valve and the leakage-stopping lever assembly, wherein the leakage-stopping shell, the leakage-stopping valve and the leakage-stopping lever assembly provide a mounting foundation. The leak-proof shell is provided with an installation position and can be connected with a filtering device which is independently used, the leak-proof shell is communicated with the filtering device through a liquid outlet, and liquid filtered by the filtering device can be discharged. The leakage-stopping valve comprises a valve core and a first elastic piece acting on the valve core, wherein the leakage-stopping lever assembly is used for opening or closing the leakage-stopping valve and comprises a lever and a limiting block which can rotate relatively, the limiting block is connected with a leakage-stopping shell, a first limiting part and a second limiting part which are used for limiting the rotation of the lever are arranged on the limiting block, the first end of the lever extends out of the leakage-stopping shell, the lever can rotate relative to the limiting block and the leakage-stopping shell by operating the first end of the lever, and the first limiting part and the second limiting part are switched. When the lever rotates and switches between the first limiting part and the second limiting part, the acting force of the second end of the lever on the valve core is changed, the valve core closes or opens the liquid outlet under the combined action of the second end of the lever and the first elastic piece, the liquid discharge channel is closed when the valve core closes the liquid outlet, and the residual water of the filtering device is blocked in the leakage stopping device to avoid leakage.

Compared with the prior art, the leakage stopping device provided by the application can be connected with an independently used filter device, and the liquid discharging channel can be opened and closed according to the use requirement, so that the technical problem of leakage after the independent filter device is used is solved.

In some embodiments, the leakage-stopping lever assembly further comprises a second elastic piece and a guide part movably connected with the middle part of the lever, two ends of the second elastic piece respectively act on the guide part and the lever, and the lever is movably matched with the limiting block through the guide part;

the limiting block is provided with a state switching part, and when the guiding part moves from the state switching part to the first limiting part or the second limiting part, the deformation of the second elastic piece has a reduced trend.

The state switching part is arranged on the limiting block and is matched with the second elastic piece acting on the movable guide part, and when the guide part moves from the state switching part to the first limiting part or the second limiting part, the deformation of the second elastic piece has a reduced trend, namely the elasticity of the second elastic piece overcome when the lever rotates to the state switching part is maximum, and the elasticity of the second elastic piece overcome when the lever rotates to the first limiting part or the second limiting part is smaller relative to the state switching part, so that the current state can be maintained under the elasticity of the second elastic piece when the lever rotates to the first limiting part or the second limiting part, and the unexpected opening and closing of the liquid outlet due to slight disturbance of the outside is avoided.

In some embodiments, the limiting block is provided with a first guide surface and a second guide surface which are arranged in an angle, and the state switching part is positioned at the transition position of the first guide surface and the second guide surface; the guide portion is selectively in contact with the first guide surface or the second guide surface when the lever rotates relative to the stopper.

Through setting up first guide surface and second guide surface on the stopper, the guide part of lever can slide on first guide surface and second guide surface, slides to first restriction portion or second restriction portion fast under the guide of first guide surface and second guide surface.

In some embodiments, the first guide surface and the second guide surface are inclined surfaces inclined in opposite directions to form a tip for constituting a state switching portion in a middle portion of the stopper.

Through setting up first guide surface and second guide surface as the inclined plane of reverse slope for the lever can be under the elasticity effect of second elastic component, crosses sharp end back edge inclined plane automatically sliding to first restriction portion or second restriction portion, improves the simple operation nature.

In some embodiments, the lever comprises a rod part, an operation part, a limiting part and an action part, wherein the operation part is connected to the rod part, the operation part is positioned at a first end of the lever, the action part is positioned at a second end of the lever, and the limiting part is positioned between the operation part and the action part;

The second elastic piece is a spring, the spring is sleeved on the rod part, and two ends of the spring are respectively abutted to the guide part and the limiting part.

The lever is convenient to operate outside the leak-proof shell by arranging the operation part; the spring can be effectively limited by arranging the limiting part, and the spring is sleeved on the rod part, so that the elastic direction of the spring can be ensured to always be along the axial direction of the lever; the lever is convenient to act on the valve core by arranging the acting part.

In some embodiments, the valve core is movably arranged in the liquid outlet, and a sealing gasket for sealing the liquid outlet is arranged on the valve core; the valve core is internally provided with a flow passage and a flow guide opening, the flow guide opening is positioned at a position on the valve core, which is close to the liquid outlet, and the flow passage is communicated with the liquid outlet through the flow guide opening.

Through setting up the case activity in the liquid outlet for the liquid outlet is the mounting hole of case simultaneously, is equipped with sealing washer on the case, can seal the liquid outlet. The valve core is provided with a liquid flow passage, and the flow guide opening of the valve core is close to the liquid outlet, so that liquid at the liquid outlet can enter the flow passage of the valve core through the flow guide opening and is discharged from the valve core.

In certain embodiments, the valve cartridge includes a guide rod and an abutment provided at a first end of the guide rod; the guide rod is movably arranged in the liquid outlet in a penetrating way, and the flow channel and the guide opening are both arranged in the guide rod; the second end of the guide rod is provided with a sealing groove, and the sealing gasket is arranged in the sealing groove;

the two ends of the first elastic piece respectively act on the abutting part and the leak-proof shell.

Through setting up the case as the butt portion of guide arm, the guide arm is used for providing the runner, is convenient for go out the liquid, and butt portion is used for the first elastic component of butt, the installation arrangement of the first elastic component of being convenient for.

In some embodiments, the abutting portion is bowl-shaped, and an opening of the bowl-shaped abutting portion faces the liquid outlet; the abutting part is provided with a through hole; the guide rod and the abutting part are of an integrated structure.

Through setting up the butt portion into the bowl form structure of opening towards the liquid outlet, bowl form structure can hold the liquid that connects liquid outlet department excessive, avoids liquid to scatter everywhere.

In some embodiments, the first elastic member is a spring, the spring is sleeved on the guide rod, and one end of the spring extends into the bowl-shaped abutting part; the diameter of the spring is larger than the largest dimension of the liquid outlet in the direction perpendicular to the axial direction of the spring.

The first elastic piece is a spring sleeved on the guide rod, so that the elastic direction of the spring can be ensured to be always along the axial direction of the guide rod; the inner cavity of the spring is larger than the liquid outlet, so that the fluid flowing out of the liquid outlet is prevented from contacting the spring, the cleaning of the fluid is ensured, and meanwhile, the damage caused by the contact of the spring with the fluid is avoided.

In some embodiments, the leak-proof housing comprises a leak-proof upper cover and a leak-proof lower cover which are connected, the limiting block and the leak-proof valve are both positioned in an inner cavity formed by surrounding the leak-proof upper cover and the leak-proof lower cover, and the installation position is arranged on the leak-proof upper cover; the leakage-stopping lower cover is provided with a liquid outlet opposite to the leakage-stopping valve.

The leakage-stopping shell is of a split structure, so that the limiting block and the leakage-stopping valve can be conveniently disassembled and assembled.

In some embodiments, the leak-proof upper cover includes a support housing, a valve housing within the support housing, and a septum coupled to the support housing and the valve housing to divide a cavity between the support housing and the valve housing into an upper annular cavity and a lower annular cavity, the upper annular cavity constituting the mounting location;

the support shell is provided with an extension hole for the first end of the lever to extend out of the leak-proof shell; the liquid outlet is arranged on the valve casing.

Through setting up the middle baffle for the last ring chamber and the lower ring chamber of leak-proof upper cover separate, and filter equipment's liquid can only pass through the liquid outlet discharge, and go up the ring chamber and can regard as the installation position of installation filter equipment.

In some embodiments, the valve housing is provided with a baffle recessed downward in the direction of fluid flow, and the fluid outlet is provided in the baffle.

Through setting up the guide plate that follows the downward sunken of liquid circulation direction, the liquid of the filter equipment of being convenient for is totally assembled in the liquid outlet.

In some embodiments, a sealing ring is arranged on at least one of the support shell, the valve shell and the middle partition plate.

By arranging the sealing ring, the liquid leakage between the filtering device and the leakage stopping device is reduced.

In some embodiments, the leak-proof casing is provided with more than two fastening structures distributed at intervals, and a space surrounded by fastening positions of the more than two fastening structures forms the installation position.

In some embodiments, the fastening structure includes a push block and a third elastic member, where the middle part of the push block is in running fit with the leak-proof housing, the third elastic member acts on a first end of the push block, and a second end of the push block is provided with the fastening position.

Through setting up buckle structure fixed filter equipment, be convenient for leak-stopping device and filter equipment's connection.

The application adopts another technical scheme that: there is provided a hand-brewed coffee apparatus comprising:

the leakage stopping device;

the funnel is arranged in the installation position of the leakage stopping device and is opposite to the liquid outlet of the leakage stopping device.

According to the hand-brewing coffee device provided by the application, due to the arrangement of the leak-stopping device, the funnel is taken off after hand-brewing, residual water of the funnel drops into the leak-stopping device, and when the liquid outlet of the leak-stopping device is closed, no residual water drops below the hand-brewing coffee device, so that the common funnel can realize the manual drip-preventing function.

The application adopts another technical scheme that: the utility model provides a hand is towards coffee device, including foretell leak-stopping device and integrated into one piece in leak-stopping device's installation position funnel, the funnel just to the liquid outlet.

The hand coffee making device provided by the application adopts an integrated structure, and is simpler in structure; due to the arrangement of the leakage stopping device, the liquid outlet of the leakage stopping device is closed after the hand is used for flushing, and residual water is not generated after the integrated hand-flushing coffee device is taken away, so that the manual drip-preventing function is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structural diagram of a leakage stopping device according to an embodiment of the present application.

Fig. 2 shows a full section of the leakage stop device of fig. 1 in a closed state of the liquid outlet, taken in a plane parallel to the lever.

Fig. 3 shows a full section of the leakage stop device of fig. 1 in a closed state of the liquid outlet, taken along a plane perpendicular to the lever.

Fig. 4 shows an assembly structure of the lever, stopper and guide in the leakage stopper of fig. 2 and 3.

Fig. 5 shows a full section of the leakage stop device of fig. 1 in a plane parallel to the lever in the open state of the liquid outlet.

Fig. 6 is a view showing an assembly structure of the lever, stopper and guide in the leakage stopper of fig. 5.

Fig. 7 shows an exploded view of the leak-stopping apparatus of fig. 1.

Fig. 8 shows a schematic structural view of a stopper in the leak-stopping apparatus of fig. 7.

Fig. 9 shows a schematic structural view of the push block in the leak-stopping apparatus of fig. 7.

Fig. 10 shows a schematic structural view of the valve core in the leak-stopping apparatus of fig. 7.

Fig. 11 shows a schematic structural view of a leakage stopping upper cover of the leakage stopping device of fig. 7.

Fig. 12 is a schematic view showing the structure of a leakage stopping lower cover of the leakage stopping device of fig. 7.

Fig. 13 shows a schematic structural view of a hand coffee maker according to an embodiment of the present application.

Fig. 14 shows an exploded view of the hand coffee maker of fig. 13.

Fig. 15 shows a full section of the hand-brewed coffee apparatus of fig. 13 in a closed state of the outlet, taken along a plane perpendicular to the lever.

Fig. 16 shows a schematic structural view of a hand coffee maker according to another embodiment of the present application.

Reference numerals illustrate:

1000-hand coffee brewing device; 1100-a leak-stopping device; 1200-funnels, 1210-mounting plates, 1211-supporting surfaces, 1212-through holes, 1220-limit sleeves, 1230-bodies and 1231-filtering ports; a-filtration device.

100-of a leakage-proof shell, 110-of a leakage-proof upper cover, 111-of a mounting position and 112-of a connecting boss; 120-of a leak-proof lower cover, 121-of a liquid outlet, 122-of a connecting counter bore and 123-of a liquid outlet pipe; 130-a buckling structure, 131-a pushing block, 131 a-a first end of the pushing block, 131 b-a second end of the pushing block, 132-a third elastic piece, 133-a buckling position, 134-a limiting structure, 135-a rotating shaft, 136-a mounting groove, 137-a first bulge, 138-a second bulge and 139-a third guide surface; 140-valve shell, 141-valve cavity, 142-ring groove, 143-mounting column; 150-supporting shell, 151-avoiding hole, 152-limiting surface, 153-rotating hole and 154-extending hole; 160-deflector, 161-receiving cavity, 162-liquid outlet; 170-a middle separator; 180-upper ring cavity; 190-lower annulus.

200-leak-proof valve, 210-valve core, 211-guide rod, 211 a-first end of guide rod, 211 b-second end of guide rod, 212-flow passage, 213-guide port, 214-abutment, 215-seal groove, 216-through opening, 217-opening, 218-abutment bowl, 219-abutment boss, 220-first elastic member, 230-sealing gasket.

300-leak-proof lever assembly, 310-lever, 310 a-first end of lever, 310 b-second end of lever, 311-stem, 312-operating portion, 313-spacing portion, 314-action portion, 315-first bend, 316-second bend, 320-spacing block, 321-first limiting portion, 322-second limiting portion, 323-state switching portion, 324-first guide surface, 325-second guide surface, 326-tip, 327-spacing aperture, 330-guide portion, 340-second elastic member; 400-sealing ring.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

In the related art, the filtering devices such as a funnel, a filter screen and the like still have residual water after use, and the grinding drip-filtering coffee machine is internally provided with a built-in drip-preventing device, but cannot be directly applied to the filtering devices used independently, so that the existing filtering devices used independently have the technical problem of inconvenient use. The embodiment of the application provides a leakage stopping device and a hand-brewing coffee device, which at least can solve the technical problem that the independent filtering device is dripped after being used to a certain extent.

The application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

example 1:

the embodiment of the application provides a leakage stopping device which can be connected with an independently used filter device A, wherein the filter device A can be a filter device with a filtering effect such as a hand coffee making funnel or a filter screen, a tea basket and the like which are independently used. The leakage-stopping device can open and close the liquid discharge channel according to the use requirement, so that the technical problem of leakage after the independent filtering device A is used is solved.

Referring to fig. 1 and 7, a leak stop device 1100 according to an embodiment of the present application includes a leak stop housing 100, a leak stop valve 200, and a leak stop lever assembly 300, where the leak stop housing 100 provides a mounting base for the leak stop valve 200 and the leak stop lever assembly 300. The leak-proof housing 100 is provided with a mounting position 111, and can be hung on a filter device a, such as a funnel or a filter screen, which is used independently, and the leak-proof housing 100 communicates with the filter device a through a liquid outlet 162, so that the liquid filtered by the filter device a can be discharged. The leak-proof valve 200 includes a valve core 210 and a first elastic member 220, where the valve core 210 is movably disposed in the leak-proof housing 100, so that the valve core can relatively move with the leak-proof housing 100 under the action of the first elastic member 220. The first elastic member 220 has elasticity, and the first elastic member 220 acts on the valve core 210 and the leak-proof housing 100 respectively, so that the valve core 210 can close or open the liquid outlet 162 under the elastic action of the first elastic member 220. The leakage stopping lever assembly 300 includes a stopper 320 and a lever 310, the stopper 320 is connected with the leakage stopping housing 100, and the stopper 320 and the leakage stopping housing 100 may be in an integrated structure or a split structure. The limiting block 320 and the lever 310 can rotate relatively to form a lever mechanism, the limiting block 320 is located in the middle of the lever 310 and serves as a fulcrum of the lever mechanism, two ends of the lever 310 serve as a power point and a resistance point of the lever mechanism respectively, a first end 310a serving as a power point extends out of the leak-proof housing 100 for an operator to operate, and a second end 310b serving as a resistance point acts on the valve core 210 to drive the valve core 210 to move in the leak-proof housing 100.

Referring to fig. 4, 6 and 8, the limiting block 320 is provided with a first limiting portion 321 and a second limiting portion 322 for limiting the rotation of the lever 310, where the first limiting portion 321 and the second limiting portion 322 are located on a rotation path of the lever 310 and are opposite to each other, and when the lever 310 rotates to a position of the first limiting portion 321 and the second limiting portion 322, the lever 310 may specifically rotate to a position contacting the first limiting portion 321 and the second limiting portion 322, and the lever 310 is blocked by the first limiting portion 321 and the second limiting portion 322 and cannot continue to rotate.

When the lever 310 is rotationally switched between the first limiting portion 321 and the second limiting portion 322, the acting force of the second end 310b of the lever 310 on the valve core 210 is changed, and the valve core 210 closes or opens the liquid outlet 162 under the combined action of the second end 310b of the lever 310 and the first elastic member 220. In some embodiments, when the lever 310 reaches the first limiting portion 321, the liquid outlet 162 is in an open state, and when the lever 310 reaches the second limiting portion 322, the liquid outlet 162 is closed by the valve core 210. In other embodiments, when the lever 310 rotates to the first limiting portion 321, the liquid outlet 162 is in a closed state, and when the lever 310 rotates to the second limiting portion 322, the liquid outlet 162 is closed by the valve core 210. In some embodiments, the force of the first elastic member 220 on the valve core 210 drives the valve core 210 to close the liquid outlet 162. In other embodiments, the force of the first elastic member 220 on the valve core 210 drives the valve core 210 to open the liquid outlet 162. It should be understood that the second end 310b of the lever 310 and the first elastic member 220 both apply force to the valve core 210, so that the direction and magnitude of the force applied by the second end 310b of the lever 310 and the first elastic member 220 to the valve core 210 can change the relative positional relationship between the valve core 210 and the liquid outlet 162. The specific acting force applied to the valve core 210 when the liquid outlet 162 is closed or opened is not limited in the present application, and other stress states of the valve core 210 are not exhaustive here.

Referring to fig. 2, 3 and 5, in some embodiments, when the lever 310 reaches the first limiting portion 321, the liquid outlet 162 is in an open state, and when the lever 310 reaches the second limiting portion 322, the liquid outlet 162 is closed by the valve core 210. In use, an operator can switch the lever 310 between the first limiting portion 321 and the second limiting portion 322 by operating the first end 310a of the lever 310 to rotate the lever 310 relative to the stop block 320 and the leakage stop housing 100. When the lever 310 rotates to the second limiting part 322 relative to the limiting block 320, the valve core 210 closes the liquid outlet 162, as shown in fig. 2 and 3, the liquid discharge channel is closed at this time, and the residual water of the filtering device a is blocked in the leakage stopping device 1100, so that dripping is avoided; when the lever 310 rotates to the first limiting portion 321, the second end 310b of the lever 310 overcomes the elastic force of the first elastic member 220, and drives the valve core 210 to open the liquid outlet 162, and at this time, the liquid outlet 162 of the leak-stopping device 1100 is in an open state, and the liquid of the leak-stopping device 1100 and the filtering device a mounted thereon can be normally discharged through the liquid outlet 162, as shown in fig. 5.

Referring to fig. 2, in some embodiments, the leakage-stopping lever assembly 300 further includes a guide portion 330 and a second elastic member 340, the guide portion 330 is movably disposed in the middle of the lever 310, the second elastic member may be a spring or a shrapnel, two ends of the second elastic member respectively act on the guide portion 330 and the lever 310, in some embodiments, a first end of the second elastic member acts on the guide portion 330, a second end of the second elastic member acts on the lever 310, so that, under the action of the elastic force of the second elastic member 340, when the lever 310 rotates relative to the leakage-stopping housing 100, the guide portion 330 may be in sliding contact with the stopper 320 to form a sliding fulcrum, so that the lever 310 rotates fast relative to the leakage-stopping housing 100, and the second elastic member 340 may maintain a state when the lever 310 is positioned at the first limiting portion 321 or the second limiting portion 322, so as to maintain a state that the valve core 210 closes the liquid outlet 162 or opens the liquid outlet 162, thereby avoiding a human hand from acting on the lever 310 all the time.

The guide 330 may be a guide block or a guide sleeve as a guide structure, and the structure of the guide 330 is not particularly limited in the present application. In one embodiment, the guide portion 330 is a guide block, the guide block is provided with a guide protrusion, the lever 310 is provided with a chute arranged along the length direction of the guide protrusion, the guide protrusion is slidably embedded in the chute, the guide portion 330 is movably connected with the lever 310, and the guide block is in sliding contact with the limiting block 320 when the lever 310 rotates relative to the leak-proof housing 100 under the elastic force of the second elastic piece 340; in another embodiment, referring to fig. 4, the guiding portion 330 is a guiding sleeve, and the guiding sleeve is slidably sleeved outside the lever 310 along the length direction of the lever 310, so that the guiding portion 330 is movably connected with the middle portion of the lever 310, and when the lever 310 rotates relative to the leak-proof housing 100 under the elastic force of the second elastic member 340, the end portion of the guiding sleeve, which is far away from the second elastic member 340, contacts with the limiting block 320.

In order to improve the stability of the lever 310 at the first limiting portion 321 and the second limiting portion 322, referring to fig. 2 and 8, the stopper 320 is provided with a state switching portion 323, and when the guide portion 330 moves from the state switching portion 323 to the first limiting portion 321 or the second limiting portion 322, the deformation amount of the second elastic member 340 tends to decrease. That is, the elastic force of the second elastic member 340 overcome when the lever 310 is at the position of the state switching portion 323 is maximum, and the elastic force of the second elastic member 340 overcome when the lever 310 is rotated to the first limiting portion 321 or the second limiting portion 322 is smaller than that when the lever 310 is rotated to the state switching portion 323, so that when the lever 310 is rotated to the first limiting portion 321 or the second limiting portion 322, the current state can be maintained under the elastic force of the second elastic member 340, and the liquid outlet is prevented from being opened or closed accidentally by slight disturbance of the outside. That is, when the guide portion 330 is positioned at the first limiting portion 321 or the second limiting portion 322 as a dead point during rotation of the lever 310, the state of the entire leakage preventing device 1100 is not switched without disturbance of external force, and when the guide portion 330 is positioned at the position of the state switching portion 323 or the position around the state switching portion 323, the guide portion 330 is in an unstable state and moves to the first limiting portion 321 or the second limiting portion 322 by the elastic force of the second elastic member 340.

Referring to fig. 2 and 5, in some embodiments, the stopper 320, the guide portion 330, and the second elastic member 340 are sequentially disposed, the state switching portion 323 is located between the first and second limiting portions 321 and 322, and a distance between the state switching portion 323 and an end portion of the second elastic member 340 acting on the lever is smaller than a distance between the first and second limiting portions 321 and 322 and the end portion of the second elastic member 340. That is, the elastic force of the second elastic member when the lever 310 is located at the state switching portion 323 is greater than the elastic force of the lever 310 when the first limiting portion 321 and the second limiting portion 322, the lever 310 will automatically tend to stay at a position where the elastic force of the second elastic member 340 is smaller, so when the lever 310 rotates to the first limiting portion 321 or the second limiting portion 322, the current state can be maintained under the elastic force of the second elastic member 340, and the liquid outlet 162 is prevented from being accidentally opened and closed by slight disturbance from the outside.

More specifically, in the process of changing the liquid outlet 162 from the open-close state to the closed state, the rotation path of the lever 310 is the first limiting portion 321, the state switching portion 323, and the second limiting portion 322, the second end 310b of the lever 310 is separated from or in virtual contact with the valve core 210, the valve core 210 presses the liquid outlet 162 under the elastic force of the first elastic member 220, and the liquid outlet 162 is in the closed state, as shown in fig. 2; in the process of changing the liquid outlet 162 from the closed state to the open state, the rotation path of the lever 310 is the second limiting portion 322-the state switching portion 323-the first limiting portion 321, the second end 310b of the lever 310 overcomes the elastic force of the first elastic member 220, and pushes the valve core 210 up, so that the valve core 210 opens the liquid outlet 1622, and the liquid outlet 162 is in the open state, as shown in fig. 5.

In some embodiments, referring to fig. 8, the stopper 320 is provided with a stopper hole 327 through which the lever 310 passes and rotates, the lever 310 extends into the stopper hole 327, and the stopper 320 is located between the first end 310a and the second end 310b of the lever 310. Two opposite parts of the limiting hole 327 located on the rotating path of the lever 310 respectively form a first limiting part 321 and a second limiting part 322. In other embodiments, the stopper 320 has two protrusions, and the lever 310 rotates between the two protrusions, and the two protrusions respectively form the first limiting portion 321 and the second limiting portion 322. In other embodiments, at least two limiting grooves are disposed at one side of the limiting block 320 at intervals in sequence, the lever 310 can enter the at least two limiting grooves in a switchable manner during the rotation process relative to the limiting block 320, and the groove walls of the two limiting grooves in the at least two limiting grooves are respectively a first limiting portion 321 and a second limiting portion 322. The specific structures of the first limiting portion 321 and the second limiting portion 322 are not limited by the present application.

In order to quickly implement the rotation of the lever 310 of the leakage stop lever assembly 300 relative to the leakage stop housing 100, referring to fig. 8, in some embodiments, the stopper 320 is provided with a first guiding surface 324 and a second guiding surface 325 disposed at an angle, and the state switching portion 323 is located at a transition between the first guiding surface 324 and the second guiding surface 325. The guide 330 may selectively contact the first guide surface 324 or the second guide surface 325 when the lever 310 rotates relative to the stopper 320.

In some embodiments, referring to fig. 2, 4 and 8, the guide 330 employs a guide sleeve, one end of which abuts the second elastic member 340, and an end of which, remote from the second elastic member 340, is switchably in contact with the first guide surface 324 or the second guide surface 325; in other embodiments, the end of the guiding sleeve away from the second elastic member 340 may be tapered, the size of the limiting hole 327 of the limiting block 320 is reduced along the direction from the first end 310a to the second end 310b of the lever 310 in the direction perpendicular to the cross section of the lever 310, the hole wall of the limiting hole 327 is provided with a first guiding surface 324 and a second guiding surface 325 which are disposed at an angle, and the tapered portion of the guiding sleeve is in contact with the first guiding surface 324 or the second guiding surface 325 in a switchable manner, and both the first guiding surface 324 and the second guiding surface 325 may be curved or inclined.

In other embodiments, the end of the guide sleeve far away from the second elastic element 340 may be T-shaped, one side of the limiting block 320 facing the second elastic element 340 is provided with a first guide surface 324 and a second guide surface 325 which are arranged at an angle, and the step surface of the T-shaped part of the guide sleeve is switchably contacted with the first guide surface 324 or the second guide surface 325, and at this time, both the first guide surface 324 and the second guide surface 325 may adopt inclined planes matched with the T-shape or curved surfaces; in other embodiments, the shape of the end of the guide sleeve away from the second elastic member 340 may be a combination of taper and T, and the shape of the guide sleeve is not limited in the present application.

To further enhance the ease with which the guide 330 of the lever 310 slides on the first guide surface 324 and the second guide surface 325, in conjunction with fig. 8, in some embodiments, the first guide surface 324 and the second guide surface 325 are inclined in opposite directions to form a tip 326 for constituting the state switching portion 323 in the middle of the stopper 320, the tip 326 is closer to the second elastic member 340 than other portions of the first guide surface 324 and the second guide surface 325, when the side of the first guide surface 324 away from the tip 326 contacts the guide 330, the lever 310 reaches the second limiting portion 322, and when the side of the second guide surface 325 away from the tip 326 contacts the guide 330, the lever 310 reaches the first limiting portion 321, and the first guide surface 324 and the second guide surface 325 inclined in opposite directions make the distance between the state switching portion 323 and the second end of the second elastic member 340 smaller than the distances between the first limiting portion 321 and the second limiting portion 322 and the second end of the second elastic member 340. In other embodiments, the first guiding surface 324 and the second guiding surface 325 may be curved surfaces that are inclined reversely, and the curved surfaces may be concave or convex, in some embodiments, when the first guiding surface 324 and the second guiding surface 325 are convex curved surfaces, the stability of the lever 310 at the positions of the first limiting portion 321 and the second limiting portion 322 is better, in other embodiments, when the first guiding surface 324 and the second guiding surface 325 are concave curved surfaces, the process of sliding the lever 310 from the state switching portion 323 to the first limiting portion 321 or the second limiting portion 322 is more convenient.

As a component of the leak-stop valve 200 that an operator directly operates, referring to fig. 4, 5 and 6, in some embodiments, the lever 310 includes a rod portion 311, and an operating portion 312, a limiting portion 313 and an acting portion 314 connected to the rod portion 311, where the cross-sectional area of the rod portion 311 along the length direction may be the same, or a reducing lever may be used according to the operation requirement. In some embodiments, the lever portion 311, the operating portion 312, the restraining portion 313, and the acting portion 314 are of a unitary construction. The operation portion 312 is provided at the first end 310a of the lever 310 and is located outside the leakage preventing housing 100, so that the operation is facilitated, the operation portion 312 may be provided in a circular shape, a spherical shape, etc., and the shape of the operation portion 312 is not limited in the present application. In some embodiments, referring to fig. 6, the operating portion 312 is configured as a circular plate, which improves the comfort of an operator pulling the lever 310.

The limiting portion 313 is located in the middle of the lever 310, where the limiting portion 313 is used to abut against the second elastic element 340, in one embodiment, the limiting portion 313 may be a limiting convex ring formed by extending out of the lever 310 along the radial direction of the lever 310, and the limiting convex ring abuts against the second end of the second elastic element 340; in another embodiment, referring to fig. 4 and fig. 6, the limiting portion 313 may also be a limiting rod connected to the rod portion 311, two ends of the limiting rod extend out of the lever 310, the limiting rod and the rod portion 311 of the lever 310 form a cross structure, and the limiting rod abuts against the second end of the second elastic member 340. In some embodiments, the second elastic member 340 is a spring, the spring is movably sleeved on the rod portion 311, and two ends of the spring respectively abut against the guiding portion 330 and the limiting portion 313.

The acting portion 314 acts on the valve core 210, the acting portion 314 is located at a second end 310b of the lever 310, in some embodiments, the acting portion 314 is a bending rod connected to the lever portion 311, and referring to fig. 4, the bending rod includes a first bending portion 315 and a second bending portion 316 that are connected to each other, an opening formed by the first bending portion 315 and the second bending portion 316 faces the valve core 210, the second bending portion 316 is connected to the lever portion 311, the second bending portion 316 is disposed at an angle with respect to the lever portion 311, and an opening formed by the second bending portion 316 and the lever portion 311 faces away from the valve core 210, so that the first bending portion 315 can act with the valve core 210, and when the operating portion 312 is operated, the bending rod is driven to open or close the liquid outlet 162 of the valve core 210.

The leak-proof valve 200 is used for the leak-proof housing 100 to function to close or open the liquid outlet 162 of the leak-proof housing 100. The valve core 210 of the leak-stop valve 200 may use a valve block or stem, and in some embodiments, the valve core 210 may be positioned on a side of the outlet 162 remote from the filter apparatus a, the valve core 210 being sized larger than the outlet 162 such that the valve core 210 is positioned adjacent to the outlet 162 to close the outlet 162. In other embodiments, referring to fig. 5, the valve element 210 may be movably disposed in the liquid outlet 162, the size of the end of the valve element 210 near the filtering device a is larger than that of the liquid outlet 162, and the relative movement between the valve element 210 and the liquid outlet 162 may implement that the end of the valve element 210 near the filtering device a closes or opens the liquid outlet 162. The first elastic member 220 may employ a shrapnel or a spring.

In order to improve the sealing effect of the valve core 210 on the liquid outlet 162, please refer to fig. 5 and 7, in some embodiments, the leak-proof valve 200 further includes a sealing gasket 230, the valve core 210 is movably disposed in the liquid outlet 162, a part of the valve core 210 movably disposed in the liquid outlet 162 is smaller than the liquid outlet 162, two ends of the valve core 210 respectively extend out of the liquid outlet 162 and are located at two axial sides of the liquid outlet 162, one end of the valve core 210, which is close to the filtering device a, is provided with a coaxial annular sealing groove 215, the sealing gasket 230 is mounted in the sealing groove 215, the outer diameter of the sealing gasket 230 is larger than the diameter of the liquid outlet 162, and the sealing gasket 230 can seal or open the liquid outlet 162 along with the axial reciprocating movement of the valve core 210. In other embodiments, the sealing gasket 230 may be directly sleeved on the valve core 210, the inner diameter of the sealing gasket 230 is smaller than the outer diameter of the valve core 210, and the sealing gasket 230 may be pressed against the valve core 210 through its own elasticity. The sealing gasket 230 may be made of rubber sealing ring, silica gel sealing ring, etc., and the sealing gasket 230 may be Y-shaped, O-shaped, etc.

Referring to fig. 10, in some embodiments, the valve core 210 is provided with a flow guiding port 213 and a flow channel 212, the flow channel 212 is communicated with the liquid outlet 162 through the flow guiding port 213, the flow guiding port 213 is located below the liquid outlet 162, and the filtrate falls down in a gap between an inner wall of the liquid outlet 162 and an outer side of the valve core 210 under the action of gravity and falls into the flow channel 212 of the valve core 210 through the flow guiding port 213. In some embodiments, the diversion port 213 of the valve core 210 may be provided with a plurality, for example, two, three or four, of diversion ports 213 uniformly distributed around the central axis of the valve core 210, and the diversion ports 213 are located on the side wall of the valve core 210.

Referring to fig. 10, in some embodiments, the valve core 210 may be a stepped shaft, the valve core 210 includes a large shaft section and a small shaft section, the flow guide 213 is located at the small shaft section, a shoulder is formed at a connection position of the large shaft section and the small shaft section, and when the radial dimension of the large shaft section is greater than that of the liquid outlet 162, the shoulder can limit the axial reciprocating movement of the valve core 210; when the radial dimension of the large shaft section is also smaller than the dimension of the liquid outlet 162, the arrangement of the small shaft section can increase the gap between the small shaft section and the liquid outlet 162, so that the filtrate smoothly passes through.

In order to facilitate liquid discharge, referring to fig. 5 and 10, in some embodiments, the valve core 210 includes a guide rod 211 and an abutting portion 214, where the guide rod 211 is movably disposed in the liquid outlet 162, and drives a sealing gasket 230 located in a sealing groove 215 at a second end 211b of the guide rod 211 to close or open the liquid outlet 216, and when the sealing gasket 230 opens the liquid outlet 216, filtrate flowing out from a gap between the liquid outlet 216 and an outer wall of the guide rod 211 enters into a flow channel 212 of the guide rod 211 from a flow guiding port 213 of the guide rod 211.

The abutment portion 214 is disposed at the first end 211a of the guide rod 211, the abutment portion 214 acts on the first elastic member 220, so that the installation and arrangement of the first elastic member 220 are facilitated, the guide rod 211 and the abutment portion 214 can be in a split structure, and the guide rod 211 and the abutment portion 214 can be connected by riveting, screwing or clamping.

In some embodiments, the abutment 214 may be a protrusion protruding radially from the guide rod 211, and a side of the protrusion near the filtering device a abuts against the first elastic member 220; in other embodiments, referring to fig. 10, the abutting portion 214 may also be bowl-shaped, the first elastic member 220 extends into the abutting portion 214, and the opening 217 of the bowl-shaped abutting portion 214 faces the liquid outlet 162, so that the liquid overflowing from the liquid outlet 162 can be contained, and the liquid is prevented from scattering everywhere. In some embodiments, referring to fig. 5, the abutting portion 214 is provided with a through hole 216 for discharging the liquid to be received, and the through hole 216 may be provided in one or two or three, and when a plurality of through holes 216 are provided, the plurality of through holes 216 are distributed around the guide rod 211.

In some embodiments, the abutting portion 214 includes an abutting bowl 218 and a plurality of abutting protrusions 219 connected to an inner wall of the abutting bowl 218, the number of the abutting protrusions 219 may be two, three or other, the plurality of abutting protrusions 219 are uniformly spaced around the guiding rod 211, the through hole 216 is located between two adjacent abutting protrusions 219, only one through hole 216 is located between two adjacent abutting protrusions 219, and the plurality of abutting protrusions 219 abut against the first elastic member 220.

To increase the strength of the abutment 214, in other embodiments, the abutment projection 219 may extend along a generatrix of the abutment bowl 218, the abutment projection 219 being connected to the first end 211a of the guide bar 211, increasing the strength of the connection between the abutment bowl 218 and the guide bar 211; in other embodiments, the abutment projection 219 is provided with a stepped structure to radially limit the first elastic member 220, so as to ensure the coaxiality of the first elastic member 220 and the guide rod 211. In some embodiments, the acting portion 314 of the lever 310 may act with the first end 211a of the guide rod 211, or with the abutment 214, i.e. the abutment bowl 218, preferably the acting portion 314 of the lever 310 acts with the first end 211a of the guide rod 211.

The first elastic member 220 may be a spring plate or a spring, in some embodiments, the first elastic member 220 is a spring, the spring is sleeved on the guide rod 211, one end of the spring abuts against the plurality of abutting protrusions 219, so that filtrate entering the abutting bowl 218 may not contact with the first elastic member 220, pollution of the filtrate is avoided, and the first elastic member 220 may be protected. In some embodiments, the diameter of the spring is greater than the largest dimension of the outlet 162 in a direction perpendicular to the axial direction of the spring, and the inner cavity of the spring is greater than the outlet 162, ensuring that fluid exiting the outlet 162 does not contact the spring, ensuring cleanliness of the fluid, and avoiding damage to the spring from contact with the fluid.

The leak-proof housing 100 may be a split type structure, and may be integrally connected by means of a clamping, riveting or screwing method, and the leak-proof housing 100 may be connected to the filtering device a at the same time when the leak-proof housing 100 is connected by means of a clamping, riveting or screwing method, and the leak-proof housing 100 may also be an integral type structure, so that the structure of the leak-proof housing 100 is not limited.

Referring to fig. 7, in some embodiments, the leak-proof housing 100 includes a leak-proof upper cover 110 and a leak-proof lower cover 120 connected, the leak-proof upper cover 110 includes a support housing 150, a valve housing 140, and a middle diaphragm 170, the support housing 150 is disposed in a column shape, and the support housing 150 is provided with an extension hole 154 for extending a first end 310a of the lever 310 out of the support housing 150; the valve housing 140 is formed in a column shape and is positioned in the support housing 150, and the valve housing 140 is provided with an insertion hole into which the second end 310b of the lever 310 is inserted into the valve housing 140. The valve casing 140 is opposite to the drain port 121, the top of the valve casing 140 is provided with a guide plate 160, the guide plate 160 is a conical surface, a spherical surface or an inner concave surface with other shapes, the guide plate 160 surrounds a receiving cavity 161, and the middle part of the guide plate 160 is provided with a liquid outlet 162 communicated with the receiving cavity 161. The middle diaphragm 170 is connected to the support housing 150 and the valve housing 140 to divide an annular space between the support housing 150 and the valve housing 140 into an upper annular chamber 180 and a lower annular chamber 190, and the leak-proof lower cover 120 is positioned below the leak-proof upper cover 110 to close the lower annular chamber 190.

The second end 211b of the guide rod 211 of the leak-proof valve 200 is located in the receiving chamber 161, the first end 211a of the guide rod 211 is located in the valve chamber 141, and the sealing gasket 230 can contact or separate from the chamber wall of the receiving chamber 161, that is, the baffle 160, to close or open the liquid outlet 162; the first end 310a of the lever 310 of the leakage-proof lever assembly 300 is located outside the support housing 150, the second end 310b of the lever 310 sequentially passes through the extending hole 154 of the support housing 150 and the extending hole of the valve housing 140 and is located in the valve cavity 141, the middle part of the lever 310 and the limiting block 320 are both located in the lower annular cavity 190, the limiting block 320 is connected to the cavity wall of the lower annular cavity 190, two ends of the limiting hole 327 are communicated with the lower annular cavity 190, the guide part 330, the second elastic piece 340 and the limiting part 313 are all located in the lower annular cavity 190, and the operating part 312 is located outside the lower annular cavity 190.

The leak-proof housing 100 is used to mount the filter device a, and the filter device a is mounted on the mounting location 111 of the leak-proof housing 100, and the mounting location 111 may be a placement plane or a cavity capable of accommodating the filter device a. The filter device a and the leak-proof housing 100 may be connected by a threaded connection, a snap-fit or an interference fit, and the specific arrangement of the mounting location 111 is not limited by the present application.

In some embodiments, the filter device A may be placed directly into the upper annular cavity 180, and the upper annular cavity 180 serves as the mounting location 111 for the leak-stop device. In other embodiments, in order to conveniently and quickly connect and fix the leak-stopping device 1100 and the filtering device a, the leak-stopping housing 100 is provided with more than two fastening structures 130 distributed at intervals, the fastening structures 130 may be provided with two, three or four, preferably two, fastening structures 130 are uniformly arranged in a circumferential direction with the axial direction of the filtering device a as the center, spaces surrounded by fastening positions 133 of the more than two fastening structures 130 form the mounting positions 111, the filtering device a is mounted to the fastening positions 133 in use, the fastening structures 130 have a certain elasticity, a force towards the leak-stopping device 1100 is applied to the filtering device a, and the fastening positions 133 open the filtering device a and can be squeezed into the mounting positions 111 surrounded by the fastening positions 133. Referring to fig. 2, 3 and 11, in some embodiments, the fastening structure 130 is connected to the support housing 150, and the fastening structure 130 is provided to fix the filtering device a, so as to facilitate connection of the leak-stopping device 1100 with the filtering device a. The buckle structure 130 may be a buckle disclosed in the prior art, and the present application is not limited to the specific structure.

In order to quickly separate the leak-stopping device 1100 from the filtering device a, referring to fig. 3 and 9, in some embodiments, the fastening structure 130 includes a push block 131 and a third elastic member 132, the middle portion of the push block 131 is in rotation fit with the leak-stopping housing 100, i.e. the supporting housing 150, the third elastic member 132 acts on the first end 131a of the push block 131, the second end 131b of the push block 131 is provided with a fastening position 133, when the filtering device a is mounted on the supporting housing 150, the first end 131a of the push block 131 is pressed towards the axial direction of the filtering device a, the third elastic member 132 is compressed, the middle portion of the push block 131 rotates relative to the leak-stopping housing 100, the second end 131b of the push block 131, i.e. the fastening position 133, moves in a direction opposite to the first end, the second end 131b of the push block 131 opens, and the space enclosed by each fastening position 133 is larger than the filtering device a, at this time, the filtering device a and the leak-stopping device 1100 can be easily separated; the pushing force is stopped to be applied to the first end 131a of the pushing block 131, the restoring force of the third elastic member 132 pushes the second end, and the second ends 131b of more than two pushing blocks 131 are close to each other, so that the space formed by the fastening position 133 of the fastening structure 130 is reduced, and the connection between the filtering device a and the leak-stopping device 1100 is realized.

In some embodiments, the fastening structure 130 further includes a rotation shaft 135, the middle part of the push block 131 is connected to the rotation shaft 135, the rotation shaft 135 is movably connected to the support shell 150, the middle part of the push block 131 and the rotation shaft 135 may be in an integrated structure, the middle part of the push block 131 and the rotation shaft 135 may be in a detachable structure, in some embodiments, the push block 131 and the rotation shaft 135 are in a detachable structure, a mounting groove 136 extending along the axial direction of the rotation shaft 135 is provided in the middle part of the push block 131, the shape of the mounting groove 136 is matched with the shape of the rotation shaft 135, the rotation shaft 135 is in interference fit or adhesive connection with the groove wall of the mounting groove 136, and two ends of the rotation shaft 135 extend out of the mounting groove 136 and are matched with the rotation hole 153.

To facilitate flaring of the second end 131b of the push block 131, in connection with fig. 11, in some embodiments, the support housing 150 is provided with a relief hole 151, and the second end 131b of the push block 131 is positioned in the relief hole 151 such that the support housing 150 does not interfere with rotation of the push block 131. The hole wall of the avoidance hole 151 forms a limiting surface 152 limiting the swing range of the second end 131b of the push block 131, and the distance between the limiting surface 152 and the push block 131 sequentially increases along the direction from the first end 131a to the second end 131b of the push block 131.

To retain the filter device a, in some embodiments, the second end 131b of the push block 131 is provided with a first protrusion 137 extending toward the mounting location 111, the filter device a being provided with a mounting plate, the first protrusion 137 abutting a surface of the mounting plate when the filter device a is in a snap-fit connection with the leak-proof housing 100. To enhance the ease of connection of the leak-proof housing 100 to the filter apparatus a, in some embodiments, the height of the first protrusions 137 decreases in sequence in the axial direction from the push block 131 to the filter apparatus a, forming a third guide surface 139 that facilitates entry of the filter apparatus a into the mounting location 111. In some embodiments, the second end 131b of the push block 131 is further provided with a second protrusion 138 extending away from the mounting location 111, such that the push block 131 is substantially flush with the exterior surface of the support housing 150 when the push block 131 is not in operation, improving aesthetics.

In order to limit the movable space of the third elastic member 132, the first end 131a of the push block 131 is provided with a limiting structure 134 located in the lower annular cavity 190, the outer side of the valve housing 140 is provided with a mounting column 143 located in the lower annular cavity 190, the third elastic member 132 is located in the lower annular cavity 190, and two ends of the third elastic member 132 respectively act with the first end 131a of the push block 131 and the limiting structure 134 of the leak-proof housing 100. In one embodiment, the limiting structure 134 may be a limiting protrusion, and when the third elastic member 132 is a spring, both the limiting protrusion and the mounting post 143 are located in the cavity of the third elastic member 132; in another embodiment, the limiting structure 134 may further be a limiting groove, the third elastic member 132 is a spring or a shrapnel, and two ends of the third elastic member 132 are respectively abutted against the bottom of the limiting groove and the mounting column 143.

In order to complete the structural appearance formed by the fastening structure 130 and the leak-proof housing 100, in this embodiment, the middle portion of the push block 131 is provided with a rotation shaft 135, the support housing 150 is provided with a rotation hole 153 that is matched with the rotation shaft 135 and is communicated with the avoidance hole 151, a thrust force towards the axial direction of the filter device a is applied to the first end 131a of the push block 131, the rotation shaft 135 rotates relative to the rotation hole 153, and the second end 131b of the push block 131 is opened away from the axial direction towards the filter device a.

In some embodiments, the leak-proof lower cap 120 and the leak-proof upper cap 110 are connected by a plurality of connection structures, which are spaced around the outside of the valve housing 140, the connection structures are located in the lower ring cavity 190, the leak-proof lever assembly 300 is located between two adjacent connection structures, and the connection structures may be provided with two, three or other numbers. In certain embodiments, and in conjunction with fig. 2 and 12, the connection structure includes mating connection posts 112, fasteners, and connection counterbore 122 in the leak-stop lower cap 120, with connection boss 112 connected to the septum 170, connection boss 112 positioned within the lower annular cavity 190, and connection boss 112 mated with connection counterbore 122 and connected by threaded fasteners.

The leak-proof lower cover 120 is provided with a liquid outlet 121 opposite to the leak-proof valve 200, that is, the liquid outlet 123 is opposite to the guide rod 211, and the filtrate flowing out of the flow channel 212 of the guide rod 211 of the leak-proof valve 200 is directly discharged from the liquid outlet 123 of the leak-proof lower cover 120, so that the filtrate movement path is short and the efficiency is high. In some embodiments, the leak-proof lower cover 120 is provided with a drain pipe 123, the drain pipe 123 is communicated with an opening of the valve cavity 141 away from the deflector 160, an outlet of the drain pipe 123 forms a drain port 121, filtrate enters from the deflector port 213 of the guide rod 211, flows out into the valve cavity 141 along the flow passage 212, and is sequentially discharged through another opening of the valve cavity 141 and the drain port 121.

In some embodiments, the sealing ring 400 is disposed on the leak-proof upper cover 110, and the sealing ring 400 is located in the installation site 111 to improve the connection tightness between the leak-proof upper cover 110 and the filtering device a, and the sealing ring 400 may be disposed on any one of the support housing 150, the valve housing 140 and the middle partition 170 according to the specific structure of the filtering device a, which is not limited in the present application. Referring to fig. 7, in some embodiments, a sealing ring 400 is sleeved on the outer side of the valve housing 140, and the sealing ring 400 is located in the upper annular cavity 180. In order to improve the connection strength between the sealing ring and the valve housing 140, referring to fig. 11, a ring groove 142 is provided on the outer side of the valve housing 140 for installing the sealing ring 400, and the sealing ring 400 is embedded into the ring groove 142 and partially protrudes outside the ring groove 142, so that the liquid of the filtering device a is ensured to completely enter the receiving cavity 161 and be discharged from the liquid outlet 162.

Taking the example that the leak-stopping device 1100 is hung at the liquid outlet end of the filtering device a, the working process of the leak-stopping device 1100 provided by the embodiment of the application is as follows:

the filtering device a is inserted into the installation position 111 of the leakage preventing device 1100, the liquid to be filtered is placed in the filtering device a, the operating part 312 of the lever 310 is shifted, the lever 310 rotates relative to the leakage preventing shell 100, the operating part 312 of the lever 310 moves to the side far away from the filtering device a, the acting part 314 of the lever 310 acts on the second end 211b of the guiding rod 211, the acting part 314 of the lever 310 overcomes the gravity of the leakage preventing valve 200 and the elastic force of the first elastic element 220, the guiding part 330 rapidly slides downwards to the first limiting part 321 under the guiding action of the second guiding surface 325, and in the process that the guiding part 330 slides to the first limiting part 321, the acting part 314 of the lever 310 overcomes the gravity of the leakage preventing valve 200 and the elastic force of the first elastic element 220 so as to drive the leakage preventing valve 200 to rise, the sealing gasket 230 of the guiding rod 211 is separated from the guiding plate 160, and the receiving cavity 161, the liquid outlet 162 and the guiding port 213 are conducted. The liquid filtered by the filtering device a enters the receiving cavity 161, then enters the flow channel 212 of the guide rod 211 through the flow guiding port 213 along the liquid outlet 162, then flows out to the valve cavity 141, and then is discharged into the liquid container along the liquid outlet 121 of the leak-proof lower cover 120, as shown in fig. 5.

After the filtration is completed, the operation portion 312 of the dial-up lever 310 is rotated relative to the leakage preventing housing 100, the guide portion 330 moves along the second guide surface 325, after the guide portion 330 rotates past the state switching portion 323 of the limiting portion 313, it rapidly moves along the first guide surface 324 to the second limiting portion 322, during the movement of the guide portion 330, the acting portion 314 of the lever 310 moves downward under the gravity of the leakage preventing valve 200 itself, the elastic force of the first elastic member 220 and the acting force applied to the operation portion 312 of the lever 310, the guide rod 211 descends, and the sealing gasket 230 also moves downward until the sealing gasket 230 is pressed against the surface of the guide plate 160, thereby closing the liquid outlet 162, as shown in fig. 2 and 3.

Example 2:

referring to fig. 13, based on the same inventive concept, an embodiment of the present application provides a hand coffee maker including a funnel 1200 and a leakage preventing device 1100 of embodiment 1. The funnel 1200 is mounted in the mounting location 111 of the leak-stopping device 1100, and the funnel 1200 faces the liquid outlet 162 of the leak-stopping device 1100. Other structures of the leak-stopping device 1100, which are not described in detail, can refer to embodiment 1, and are not described herein. To utilize the gravity of the liquid itself for filtration, the leak-stopping means 1100 may be located directly below the funnel 1200. The specific structure of funnel 1200 may be found in the related art disclosure, and the present application is not limited thereto. The hand-brewing coffee device is provided with the leakage-stopping device 1100, the funnel is taken off after the hand-brewing, residual water of the funnel drops into the leakage-stopping device 1100, and when the liquid outlet 162 of the leakage-stopping device 1100 is closed, the residual water does not drop below the hand-brewing coffee device, so that the common funnel can also realize the manual leakage-preventing function.

In some embodiments, referring to fig. 14 and 15, the funnel 1200 includes a body 1230 and a mounting plate 1210, the body 1230 is used for filtering the hand-brewed coffee liquid, the body 1230 is provided with a filtering port 1231 for discharging the filtrate, the mounting plate 1210 is connected to the body 1230, the mounting plate 1210 is provided with a through hole 1212 communicated with the filtering port 1231, the position of the through hole 1212 is opposite to the position of the liquid outlet 162, and the mounting plate 1210 is connected in the mounting position 111 of the leak-stopping device 1100.

In order to improve the convenience and the tightness of the connection between the funnel 1200 and the leak-stopping device 1100, referring to fig. 15, in some embodiments, the funnel 1200 further includes a stop collar 1220 connected to the mounting plate 1210, the filtering opening 1231, the via hole 1212, the stop collar 1220 and the receiving cavity 161 are sequentially and coaxially communicated, the stop collar 1220 may be sleeved on the outer side of the valve housing 140 of the leak-stopping device 1100, the stop collar 1220 is located in the upper annular cavity 180, a sealing ring 400 is pressed between the stop collar 1220 and the valve housing 140, and a gap is provided between the mounting plate 1210 and the mounting position when the stop collar 1220 contacts the valve housing 140 in the connection process of the funnel 1200 and the leak-stopping device 1100, so that the valve housing 140 and the stop collar 1220 cooperate as a guiding structure to improve the stability in the connection between the funnel 1200 and the leak-stopping device 1100. In some embodiments, the stop collar is shaped to match the profile of the valve housing 140 to provide a radial stop to the valve housing 140.

To support the funnel 1200, the size of the through hole 1212 of the mounting plate 1210 is smaller than the size of the inner hole of the stop collar 1220, and the portion of the mounting plate 1210 located in the stop collar 1220 forms a supporting surface 1211 abutting against the deflector 160 or the valve housing 140 to support and stop the funnel 1200.

The process of inserting the funnel 1200 into the installation site 111 of the leak-stopping apparatus 1100 is as follows:

the stop collar 1220 is sleeved outside the valve casing 140 and is located in the upper annular cavity 180, the funnel 1200 moves relatively to the leak-stopping device 1100 along the axial direction of the funnel 1200 under the guiding action of the stop collar, the mounting plate 1210 of the funnel 1200 is gradually close to the mounting position 111, the second end 131b of the push block 131 is forced to be far away from the mounting position 111 under the guiding action of the third guiding surface 139, the opening of the space surrounded by the buckling position 133 of the buckling structure 130 is enlarged, and the mounting plate 1210 of the funnel 1200 is smoothly clamped into the buckling position.

Example 3:

based on the same inventive concept, another hand-made coffee apparatus is provided in the embodiment of the present application, referring to fig. 16, the hand-made coffee apparatus 1000 provided in the embodiment of the present application also includes a funnel 1200 and the leak-stopping apparatus 1100 of the above embodiment 1, where the funnel 1200 faces the liquid outlet 162 of the leak-stopping apparatus 1100. Other structures of the leak-stopping device 1100, which are not described in detail, can refer to embodiment 1, and are not described herein. The hand-brewing coffee device is provided with the leakage-stopping device 1100, so that the liquid outlet 162 of the leakage-stopping device 1100 is closed after the hand-brewing coffee device is taken off, and no residual water is generated, so that the manual drip-preventing function is realized.

Unlike embodiment 2 described above, in the hand coffee maker 1000 according to the embodiment of the present application, the funnel 1200 and the leak-stopping device 1100 are integrally formed, and in particular, the funnel 1200 and the mounting site 111 of the leak-stopping device 1100 are integrally formed. The hand coffee maker 1000 is of an integrated structure, and thus, the structure is simpler. For the leak-proof housing 100 with a split structure, for example, the leak-proof housing 100 includes the leak-proof upper cover 110 and the leak-proof lower cover 120, the leak-proof upper cover 110 and the funnel 1200 are integrally formed, and the overall structure is simpler.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

It should be noted that all the directional indicators in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A leak-stopping apparatus, comprising:

2. The leak-stopping apparatus as defined in claim 1, wherein: the leakage-stopping lever assembly further comprises a second elastic piece and a guide part movably connected with the middle part of the lever, two ends of the second elastic piece respectively act on the guide part and the lever, and the lever is movably matched with the limiting block through the guide part;

3. The leak-stopping apparatus as defined in claim 2, wherein: the limiting block is provided with a first guide surface and a second guide surface which are arranged in an angle mode, and the state switching part is positioned at the transition position of the first guide surface and the second guide surface; the guide portion is selectively in contact with the first guide surface or the second guide surface when the lever rotates relative to the stopper.

4. A leak-stopping apparatus as defined in claim 3, wherein: the first guide surface and the second guide surface are inclined surfaces which incline reversely so as to form a tip end for forming a state switching part at the middle part of the limiting block.

5. The leak-stopping apparatus as defined in claim 2, wherein: the lever comprises a rod part, an operation part, a limiting part and an action part, wherein the operation part, the limiting part and the action part are connected to the rod part, the operation part is positioned at the first end of the lever, the action part is positioned at the second end of the lever, and the limiting part is positioned between the operation part and the action part;

6. The leak-stopping apparatus as defined in any one of claims 1-5, wherein: the valve core is movably arranged in the liquid outlet, and a sealing gasket for sealing the liquid outlet is arranged on the valve core; the valve core is internally provided with a flow passage and a flow guide opening, the flow guide opening is positioned at a position on the valve core, which is close to the liquid outlet, and the flow passage is communicated with the liquid outlet through the flow guide opening.

7. The leak-stopping apparatus as defined in claim 6, wherein: the valve core comprises a guide rod and an abutting part arranged at the first end of the guide rod; the guide rod is movably arranged in the liquid outlet in a penetrating way, and the flow channel and the guide opening are both arranged in the guide rod; the second end of the guide rod is provided with a sealing groove, and the sealing gasket is arranged in the sealing groove;

8. The leak-stopping apparatus as defined in claim 7, wherein: the abutting part is bowl-shaped, and an opening of the bowl-shaped abutting part faces the liquid outlet; the abutting part is provided with a through hole; the guide rod and the abutting part are of an integrated structure.

9. The leak-stopping apparatus as defined in any one of claims 1-5, wherein: the leakage-stopping shell comprises a leakage-stopping upper cover and a leakage-stopping lower cover which are connected, the limiting block and the leakage-stopping valve are both positioned in an inner cavity formed by surrounding the leakage-stopping upper cover and the leakage-stopping lower cover, and the installation position is arranged on the leakage-stopping upper cover; the leakage-stopping lower cover is provided with a liquid outlet opposite to the leakage-stopping valve.

10. The leak-stopping apparatus as defined in claim 9, wherein: the anti-leakage upper cover comprises a supporting shell, a valve shell and a middle partition plate, wherein the valve shell is positioned in the supporting shell, the middle partition plate is connected with the supporting shell and the valve shell so as to divide a cavity between the supporting shell and the valve shell into an upper annular cavity and a lower annular cavity, and the upper annular cavity forms the installation position;

11. The leak-stopping apparatus as defined in claim 9, wherein: the anti-leakage shell is provided with more than two fastening structures distributed at intervals, and the space surrounded by the fastening positions of the more than two fastening structures forms the installation position.

12. The leak-stopping apparatus as defined in claim 11, wherein: the buckle structure comprises a push block and a third elastic piece, the middle part of the push block is in running fit with the leakage-proof shell, the third elastic piece acts on the first end of the push block, and the second end of the push block is provided with a buckle position.

13. A hand-brewed coffee apparatus, comprising:

the leak-stopping device of any one of claims 1-12;

14. A hand-brewed coffee apparatus, characterized in that: a leak-stopping device as defined in any one of claims 1 to 10, and a funnel integrally formed in the mounting location of the leak-stopping device, the funnel being directly opposite the liquid outlet.