CN216951875U

CN216951875U - Water purifying tap

Info

Publication number: CN216951875U
Application number: CN202123359175.6U
Authority: CN
Inventors: 叶立明; 白双林; 祝传宝
Original assignee: Xiamen Lota International Co Ltd
Current assignee: Xiamen Lota International Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-12
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a water purification faucet.A faucet body is provided with a water purification flow channel, a wastewater inlet pipe, a wastewater outlet pipe, a transition hole and an air vent, wherein the water purification flow channel is connected with a water purification outlet of a filter; the aperture of the transition hole is smaller than the pipe diameter of the wastewater outlet pipe, and the aperture of the transition hole is smaller than the aperture of the vent hole, when the wastewater in the wastewater outlet pipe is about to flow against the flow, the air in the vent hole enters the wastewater outlet pipe to form an air gap, and the vacuum state in the transition hole can be cut off to avoid the wastewater flowing against the flow. Therefore, reverse flow of waste water can be permanently realized by arranging the simple structures in the faucet body, excessive space in the faucet body is not occupied, the structure of the filter can be greatly simplified, the size of the filter can be reduced, and more lower spaces are released.

Description

Water purifying tap

Technical Field

The utility model relates to a water purifying faucet.

Background

Along with the improvement of living standard of people, people pay more and more attention to the current water quality. There are many users who have installed water purification apparatuses at home, in which filters play the most important role. For example, in patent application No. 201720254367.5, which is named as a water purifying device with a water tank, a water purifying mechanism is integrated with the water tank; the pure water faucet is connected with the water purifying mechanism, the tap water faucet and the water purifying mechanism are both connected with the same tap water inlet pipeline, and waste water of the water tank and the water purifying mechanism is discharged by the same waste water pipeline after being gathered. This purifier can filter the running water, but, because waste water pipeline and sewer pipe direct connection cause bacterial growing extremely easily, also cause waste water backward flow to the filter easily, cause the filter contaminated, also make the life of filter shorten.

Therefore, some water purification systems using check valves have appeared, for example, chinese patent application No. 201910593223.6 entitled water purification system, which includes a water supply source, a first filter, a second filter, a three-way pipe, a flow limiting ratio valve, a first check valve, a water purification faucet, and a domestic faucet; the water inlet end of the first filter is communicated with a water supply source through a first water inlet waterway; the water outlet end of the first filter is provided with a first purified water outlet and a first waste water outlet; the water inlet end of the second filter is communicated with the first purified water outlet through a second water inlet waterway, and the water outlet end of the second filter is provided with a second purified water outlet and a second wastewater outlet; the water purifying faucet is communicated with the second purified water outlet through a purified water outlet waterway; the first wastewater outlet, the domestic tap and the second wastewater outlet are respectively communicated among three pipe orifices of the three-way pipe; the flow limiting ratio valve and the first check valve are communicated between the first waste water outlet and the three-way pipe. Although a first check valve is arranged between the first wastewater outlet and the three-way pipe, bacteria can still breed at the check valve after the use time is long, and the check valve is easy to lose efficacy after the use time is long, so that the bred bacteria can flow back to the filter to pollute the filter. It can also be seen from the figure that the whole water purification system has a complex structure and a large size, and needs a large under-platform space to be installed.

Moreover, the existing water purifying faucet only has a simple opening and closing function.

There is a need for a faucet that can ensure the opening and closing functions of the faucet and prevent the wastewater discharged from the filter from flowing back into the filter.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water purifying faucet, which overcomes the defects in the prior art. The technical scheme adopted by the utility model for solving the technical problems is as follows:

a water purification faucet is suitable for a counter basin and comprises a faucet body and a filter, wherein the faucet body is provided with a water purification flow channel, a wastewater inlet pipe, a wastewater outlet pipe, a transition hole and an air vent;

the aperture of the transition hole is smaller than the pipe diameter of the wastewater outlet pipe, the aperture of the transition hole is smaller than the aperture of the vent hole, when the wastewater in the wastewater outlet pipe is about to flow against the flow, air in the vent hole enters the wastewater outlet pipe to form an air gap, and the vacuum state in the transition hole can be cut off to avoid the wastewater flowing against the flow.

In a preferred embodiment: the aperture of the vent hole is 2.5 times larger than that of the transition hole.

In a preferred embodiment: the vent hole is arranged above the counter basin overflow surface.

In a preferred embodiment: the water purifying faucet also comprises a control valve core which is arranged in the faucet body and can control the on-off of the water purifying flow channel.

In a preferred embodiment: the faucet body comprises a faucet shell and a reverse counter-flow body fixedly connected below the faucet shell, the control valve core is installed in the faucet shell, the reverse counter-flow body is provided with a transition cavity, the wastewater inlet pipe is communicated with the transition cavity, the transition hole is formed in the bottom wall of the transition cavity, and the vent hole is communicated with the bottom end of the transition hole and the top end of the wastewater outlet pipe.

In a preferred embodiment: the waste water outlet pipe comprises a front waste water outlet pipe and a rear waste water outlet pipe, the front waste water outlet pipe and the faucet body are integrally formed and vertically arranged, and the rear waste water outlet pipe is fixedly connected to the bottom end of the front waste water outlet pipe; the transition hole and the faucet body are integrally formed, are vertically arranged and are positioned above the front end wastewater outlet pipe; the vent hole is communicated with a waste water outlet pipe at the front end.

In a preferred embodiment: the waste water inlet pipe comprises a front waste water inlet pipe and a rear waste water inlet pipe, the rear waste water inlet pipe and the faucet body are integrally formed and are obliquely arranged, and the top end of the rear waste water inlet pipe is communicated with the top end of the transition hole; the front end waste water inlet pipe is fixedly connected with the bottom end of the rear end waste water inlet pipe.

In a preferred embodiment: the tail end of the vent hole is positioned at the rear side of the faucet body.

In a preferred embodiment: the water purification faucet further comprises an on-table mounting assembly, a mounting hole is formed in the table top of the counter basin, the on-table mounting assembly is mounted in the mounting hole, and the faucet body is fixedly connected with the on-table mounting assembly.

In a preferred embodiment: the bench mounting assembly comprises a flange plate, a screw rod, a rotation stopping piece and a nut, wherein the flange plate abuts against the top end face of the mounting hole and is provided with a mounting hole corresponding to the mounting hole; the screw rod penetrates through the assembly hole and then extends into the lower part of the mounting hole, and the screw rod can only rotate relative to the flange plate; the rotation stopping piece extends along the length direction of the screw rod, the top end of the rotation stopping piece is connected with the flange plate and the screw rod, the bottom end of the rotation stopping piece is only connected with the screw rod, and the rotation stopping piece can limit the axial movement of the screw rod; the nut is screwed on the periphery of the screw rod, and the rotation stopping piece can limit the rotation of the nut; the screw rod is rotated above the table top, the rotation stopping piece is kept still, and the nut can move upwards or downwards along with the rotation of the screw rod under the rotation stopping effect of the rotation stopping piece, so that the nut is pressed against or departs from the lower end face of the mounting hole.

Compared with the background technology, the technical scheme has the following advantages:

1. because the aperture of the transition hole is smaller than the pipe diameter of the wastewater outlet pipe, and the aperture of the transition hole is smaller than the aperture of the vent hole, when the wastewater in the wastewater outlet pipe is about to flow against the flow, the air in the vent hole enters the wastewater outlet pipe to form an air gap, so that the vacuum state in the transition hole can be cut off, or the siphon phenomenon in the transition hole is destroyed, so as to avoid the wastewater flowing against the flow. Therefore, reverse flow of waste water can be permanently realized by arranging the simple structures in the faucet body, excessive space in the faucet body is not occupied, the structure of the filter can be greatly simplified, the size of the filter can be reduced, and more lower spaces are released.

2. The aperture of the vent hole is 2.5 times larger than that of the transition hole, so that a large enough air gap can be ensured.

3. The vent hole is arranged above the overflow surface of the counter basin, so that the wastewater in the wastewater outlet pipe can be prevented from flowing back to the vent hole and flowing out.

4. The tail end of the vent hole is positioned at the rear side of the faucet body, so that the faucet body is more complete when being seen from the front side, the integral structure and the appearance of the faucet body cannot be damaged, and the faucet is more attractive.

5. The bench installation component is installed in the mounting hole, tap body and bench installation component looks rigid coupling for this water purification tap can install on counter basin mesa, saves the space under the platform.

6. The screw rod is rotated above the table top, the rotation stopping piece is kept still, and the nut can move upwards or downwards along with the rotation of the screw rod under the rotation stopping effect of the rotation stopping piece, so that the nut is pressed against or departs from the lower end face of the mounting hole. Therefore, the nut can be screwed tightly and separated from the bottom end of the table board only by rotating the screw rod on the table board, the operation procedure is extremely simple, the screw rod does not need to be operated in the axial direction, and the operation is convenient; meanwhile, the number of parts for mounting the assembly is less, the cost is reduced, and the processing and the assembly are extremely simple and convenient.

Drawings

The utility model is further illustrated by the following figures and examples.

Fig. 1 is an overall schematic view of a first preferred embodiment of a fresh water faucet.

FIG. 2 is an exploded view of the faucet body and bench top mounting assembly of the first preferred embodiment.

FIG. 3 illustrates one of the cross-sectional views of the faucet body of the first preferred embodiment.

FIG. 4 illustrates a second cross-sectional view of the faucet body of the first preferred embodiment.

FIG. 5 is one of the assembly views of the bench-top mounted assembly of the first preferred embodiment.

Fig. 6 illustrates a second assembly view of the bench-top mounted assembly of the first preferred embodiment.

FIG. 7 is a third schematic view of the assembly of the bench-top mounted components of the first preferred embodiment.

FIG. 8 is a view showing one of the assembling views of the faucet body according to the first preferred embodiment.

FIG. 9 is a second schematic assembly view of the faucet body of the first preferred embodiment.

FIG. 10 is a third schematic assembly view of the faucet body of the first preferred embodiment.

Fig. 11 is an overall schematic view of a fresh water faucet of a second preferred embodiment.

FIG. 12 is an exploded view of the faucet body and bench top mounting assembly of the second preferred embodiment.

FIG. 13 is a schematic structural diagram of the anti-reverse flow body according to the second preferred embodiment.

FIG. 14 is a schematic sectional view of the reverse-flow main body of the second preferred embodiment.

FIG. 15 is a perspective exploded view of the anti-reflux body according to the second preferred embodiment.

FIG. 16 is a cross-sectional view of the faucet housing and the anti-reflux body of the second preferred embodiment.

Detailed Description

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" and "fixedly connected" should be interpreted broadly, that is, any connection between the two that is not in a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having", and variations thereof, are intended to be inclusive and not limiting.

Referring to fig. 1 to 10, a first preferred embodiment of a purified water faucet is adapted to a counter basin, and a mounting hole 10 is formed on the counter basin.

The clean water faucet includes a faucet body 20 and a filter. Wherein, the filter is provided with a filter pure water outlet and a filter waste water outlet.

The tap body 20 is provided with a water purification flow passage 21, a waste water inlet pipe 22, a waste water outlet pipe 23, a transition hole 24 and an air vent 25, the water purification flow passage 21 is connected with a filter water purification outlet, the waste water inlet pipe 22 is connected with a filter waste water outlet, the transition hole 24 is communicated with the waste water inlet pipe 22 and the waste water outlet pipe 23, and the air vent 25 is communicated with the waste water outlet pipe 23 and the outside air. And, the aperture of the transition hole 24 is smaller than the pipe diameter of the wastewater outlet pipe 23, and the aperture of the transition hole 24 is smaller than the aperture of the vent hole 25, when the wastewater in the wastewater outlet pipe 23 is about to flow backwards, the air in the vent hole 25 enters the wastewater outlet pipe 23 to form an air gap, and the vacuum state in the transition hole 24 can be cut off to avoid the wastewater flowing backwards.

In this embodiment, the diameter of the vent hole 25 is 2.5 times larger than that of the transition hole 24, so that a sufficiently large air gap can be ensured.

In this embodiment, the vent 25 is disposed above the counter basin overflow surface. The vent hole 25 is arranged above the overflow surface of the counter basin, so that the wastewater in the wastewater outlet pipe 23 can be prevented from flowing back to the vent hole 25 and flowing out.

In this embodiment, the purified water faucet further includes a control valve plug 30, and the control valve plug 30 is installed in the faucet body 20 and can control the on/off of the purified water flow passage 21. As shown in fig. 3, a valve core assembly chamber 26 communicating with the clean water flow passage 21 is formed in a side surface of the faucet body 20, and the control valve core 30 is installed in the valve core assembly chamber 26. A handle 31 is further provided, the handle 31 is rotatably connected to the control valve core 30, and the handle 31 is rotated to drive the valve shaft of the control valve core 30 to rotate, so as to connect or disconnect the purified water flow passage 21. The function of the control valve core 30 is not limited to this, and the control valve core 30 may also have a function of regulating the flow rate.

In this embodiment, as shown in fig. 3, the waste water outlet pipe 23 includes a front end waste water outlet pipe 231 and a rear end waste water outlet pipe 232, the front end waste water outlet pipe 231 and the faucet body 20 are integrally formed and vertically arranged, and the rear end waste water outlet pipe 232 is fixedly connected to the bottom end of the front end waste water outlet pipe 231; the transition hole 24 is integrally formed with the faucet body 20, is vertically arranged, and is located above the front end waste water outlet pipe 231. Preferably, the transition hole 24 is coaxially disposed with the front end waste water outlet pipe 231. The rear end waste water outlet pipe 232 and the front end waste water outlet pipe 231 can be fixed by welding or secondary injection molding. As shown in fig. 4, the vent 25 is connected to a front waste water outlet pipe 231; and the vent holes 25 are arranged in a generally inclined manner, so that the reverse flow effect of the vent holes 25 is further enhanced.

In this embodiment, as shown in fig. 3, the waste water inlet pipe 22 includes a front waste water inlet pipe 221 and a rear waste water inlet pipe 222, the rear waste water inlet pipe 222 is integrally formed with the faucet body 20 and is disposed in an inclined manner, and the top end of the rear waste water inlet pipe 222 is communicated with the top end of the transition hole 24; the front end wastewater inlet pipe 221 is fixedly connected with the bottom end of the rear end wastewater inlet pipe 222. Similarly, the bottom ends of the front wastewater inlet pipe 221 and the rear wastewater inlet pipe 222 may also be fixed by welding or secondary injection, which is not limited to this.

In this embodiment, the end of the air vent 25 is located at the rear side of the faucet body 20. The end of the vent hole 25 is located at the rear side of the faucet body 20, so that the faucet body 20 is more complete when viewed from the front, the overall structure and the appearance of the faucet body 20 are not damaged, and the appearance is more attractive.

In this embodiment, the purified water faucet further includes an on-board mounting assembly 40, the on-board mounting assembly 40 is mounted in the mounting hole 10, and the faucet body 20 is fixedly connected to the on-board mounting assembly 40. The bench mounting component 40 is mounted in the mounting hole 10, and the tap body 20 is fixedly connected with the bench mounting component 40, so that the water purifying tap can be mounted on the table surface of a counter basin, and the space under the table is saved.

In this embodiment, the bench-top mounting assembly 40 comprises a flange 50, a screw 60, a rotation stopping member 70 and a nut 80, wherein the flange 50 abuts against the top end face of the mounting hole 10 and is provided with a mounting hole 51 corresponding to the mounting hole 10; the screw rod 60 passes through the assembly hole 51 and then extends into the lower part of the mounting hole 10, and can only rotate relative to the flange plate 50; the rotation stopping member 70 extends along the length direction of the screw 60, the top end of the rotation stopping member is connected with the flange 50 and the screw 60, the bottom end of the rotation stopping member is only connected with the screw 60, and the rotation stopping member 70 can limit the axial movement of the screw 60; the nut 80 is screwed on the periphery of the screw rod 60, and the rotation stopping piece 70 can limit the rotation of the nut 80; the rotation stopping member 70 is kept stationary by rotating the screw 60 above the table top, and the nut 80 can move up or down along with the rotation of the screw 60 under the rotation stopping action of the rotation stopping member 70, so that the nut 80 is pressed against or separated from the lower end face of the mounting hole 10. The screw 60 is rotated above the table top, the rotation stopping member 70 is kept still, and the nut 80 can move upwards or downwards along with the rotation of the screw 60 under the rotation stopping action of the rotation stopping member 70, so that the nut 80 is pressed against or departs from the lower end surface of the mounting hole 10. Therefore, the nut 80 can be screwed and separated from the bottom end of the table top only by rotating the screw rod 60 on the table top, the operation procedure is extremely simple, the screw rod 60 does not need to be operated in the axial direction, and the operation is convenient; meanwhile, the number of parts for mounting the assembly 40 on the table is less, the cost is reduced, and the processing and the assembly are extremely simple and convenient.

In order to position the flange 50 with the table top, the flange 50 is further provided with a positioning ring 52, the positioning ring 52 extends downwards along the wall of the mounting hole 51, and the positioning ring 52 extends into the mounting hole 10 when the flange 50 abuts against the top end surface of the mounting hole 10.

In this embodiment, the flange 50 is provided with a fixing portion 53, and the fixing portion 53 is provided with a through hole 54. Specifically, the fixing portion 53 is fixed on the wall of the mounting hole 51 and is offset from the center of the mounting hole 51, i.e. the central axis of the through hole 54 is not coincident with the central axis of the mounting hole 51. So that the fixing portion 53 does not occupy too much space of the fitting hole 51, and other space of the fitting hole 51 can be used for installation of the faucet body 20; meanwhile, the structure of the fixing part 53 cannot be seen from the appearance, so that the appearance is more attractive. The fixing portion 53 and the flange 50 may be integrally formed.

The flange 50 is further provided with a positioning engagement portion 55, and the positioning engagement portion 55 is located on the wall of the fitting hole 51 and above the fixing portion 53. As shown in fig. 6, the positioning engagement portion 55 is a positioning block.

The top end of the screw rod 60 is provided with a cross-shaped slotted hole 61, and the screw rod 60 can be driven to rotate by a screwdriver.

In this embodiment, the bottom end of the screw rod 60 is provided with an annular groove 62, the nut 80 is located above the annular groove 62, the bottom end of the rotation stopping member 70 is provided with a clamping protrusion 71, and the clamping protrusion 71 is clamped in the annular groove 62 after passing through the nut 80. Therefore, when the screw 60 rotates, the annular groove 62 can rotate relative to the clamping protrusion 71, and simultaneously, the bottom end of the rotation stopping piece 70 is axially limited. The screw 60 cannot move in the axial direction even by the limit projection 63 and the locking projection 71.

In this embodiment, the top end of the screw rod 60 is provided with a limit boss 63, and the bottom end of the limit boss 63 abuts against the top end face of the positioning portion 72. Moreover, as shown in fig. 7, a locking groove 64 is further formed on the periphery of the top end of the screw rod 60; the rear end of the faucet body 20 is further provided with a locking hole 27, and a locking screw 28, the locking screw 28 passes through the locking hole 27 and then presses against the locking groove 64, so as to position the faucet body 20 and the screw rod 60.

The rotation preventing member 70 extends along the length of the screw 60, has a top end connected to the flange 50 and the screw 60 and a bottom end connected to only the screw 60, and is capable of restricting the axial movement of the screw 60 by the rotation preventing member 70.

In this embodiment, the top end of the rotation stopping member 70 is provided with a positioning portion 72 disposed transversely, the positioning portion 72 abuts against the fixing portion 53 and is provided with a positioning hole corresponding to the through hole 54, the screw 60 is inserted into the positioning hole and the through hole 54, and the positioning engagement portion 55 presses against the positioning portion 72 to axially position the positioning portion 72. The positioning engagement portion 55 is pressed against the positioning portion 72 to axially position the positioning portion 72, whereby the rotation preventing member 70 and the flange 50 can be axially fixed.

Moreover, the periphery of the positioning portion 72 is tightly fitted with the hole wall of the assembly hole 51, so that the rotation stopping member 70 cannot rotate along with the rotation of the screw 60, that is, the rotation stopping member 70 is circumferentially limited.

In this embodiment, a gap is formed between the middle portion of the rotation preventing member 70 and the screw 60, and the nut 80 is engaged with the middle portion of the rotation preventing member 70 in a rotation preventing manner. As shown in FIG. 4, the intermediate member of the rotation stopper 70 is rod-shaped and parallel to the screw 60. The middle part of the rotation stopping member 70 has a gap with the screw rod 60, and the nut 80 is in rotation stopping fit with the middle part of the rotation stopping member 70, so that the rotation stopping member 70 can stop and limit the rotation of the nut 80 while the nut 80 is not interfered by the rotation stopping member 70 in the upward moving process of the nut 80.

In this embodiment, the nut 80 is provided with two rotation-stopping limiting portions 81, and the two rotation-stopping limiting portions 81 respectively abut against two sides of the middle portion of the rotation-stopping member 70. The two rotation-stopping limiting portions 81 respectively abut against two sides of the middle portion of the rotation-stopping member 70 to realize the circumferential rotation stopping of the nut 80.

In this embodiment, a screw hole 82 for engaging with the screw 60 is provided at a position of the nut 80 near the center of the fitting hole 51. As shown in fig. 5, the two rotation stop limiting portions 81 are vertically arranged rotation stop limiting bars and are located on the outer periphery of the screw hole 82.

To reduce the weight of the nut 80 and also to reduce costs, a plurality of hollowed-out holes 83 may be provided in the nut.

When not assembled, the nut 80 is located at the bottom end of the screw 60;

when the on-board mounting assembly 40 is required to be assembled with a table top, as shown in fig. 5, the bottom end of the screw rod 60 extends downwards from the mounting hole 10, the bottom ends of the nut 80 and the rotation stopping member 70 also extend into the mounting hole 10 until the flange 50 abuts against the top end surface of the mounting hole 10, and the positioning ring 52 is inserted into the mounting hole 10 to position the flange 50, as shown in fig. 6; next, the screw 60 is rotated forward above the table top, since the rotation stopping member 70 is limited in both axial and circumferential directions, the nut 80 cannot rotate along with the screw 60 due to the cooperation of the two rotation stopping limiting portions 81 and the rotation stopping member 70, at this time, the screw 60 rotates to drive the nut 80 to move upward along the screw 60 until the nut 80 presses against the bottom end face of the mounting hole 10, as shown in fig. 7, and the assembly of the table top mounting assembly 40 and the table top is completed.

Next, as shown in fig. 8, the clean water flow path 21, the waste water inlet pipe 22 and the waste water outlet pipe 23 of the faucet body 20 are inserted downward from the fitting hole 51 until the bottom end surface of the faucet body 20 abuts against the flange 50, at which time, the position of the faucet body 20 is adjusted so that the locking groove corresponds to the locking hole 27, as shown in fig. 9, and the locking screw 28 is inserted, and the locking screw 28 passes through the locking hole 27 and then presses against the locking groove 64 to position the faucet body 20 and the screw rod 60, as shown in fig. 10, so that the installation of the faucet body 20 is completed.

Referring to fig. 11 to 16, a second preferred embodiment of the water purifying faucet is shown.

In this embodiment, the faucet body 20 includes a faucet housing 201 and a reverse-flow body fixedly connected below the faucet housing 201, the control valve core 30 is installed in the faucet housing 201, the reverse-flow body is provided with a transition cavity 202, the wastewater inlet pipe 22 is communicated with the transition cavity 202, the transition hole 24 is opened in the bottom wall of the transition cavity 202, and the vent hole 25 is communicated with the bottom end of the transition hole 24 and the top end of the wastewater outlet pipe 23.

As shown in fig. 14 and 15, the reverse flow body includes a reverse flow casing 90, a reverse flow inner body 91 and a sealing gasket 92, the reverse flow inner body 91 is fixedly connected in the reverse flow casing 90, the transition cavity 202 is arranged at the reverse flow inner body 91 and is open at the top end, and the sealing gasket 92 is sealed at the top end opening of the transition cavity 202. As shown in fig. 16, the vent hole 25 transversely penetrates through the reverse flow housing 90 and the reverse flow inner body 91 until communicating with the bottom end of the transition hole 24.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the utility model, and all equivalent variations and modifications made within the scope of the present invention and the content of the description should be included in the scope of the present invention.

Claims

1. A clean water faucet, it is suitable for the counter basin, this clean water faucet includes faucet body and filter, its characterized in that: the tap body is provided with a purified water flow passage, a waste water inlet pipe, a waste water outlet pipe, a transition hole and an air vent, the purified water flow passage is connected with a purified water outlet of the filter, the waste water inlet pipe is connected with a waste water outlet of the filter, the transition hole is communicated with the waste water inlet pipe and the waste water outlet pipe, and the air vent is communicated with the waste water outlet pipe and the outside air;

2. The water purifying faucet of claim 1, wherein: the aperture of the vent hole is 2.5 times larger than that of the transition hole.

3. The water purifying faucet of claim 1, wherein: the vent hole is arranged above the counter basin water overflowing surface.

4. The water purifying faucet of claim 1, wherein: the water purifying faucet also comprises a control valve core which is arranged in the faucet body and can control the on-off of the water purifying flow channel.

5. The water purifying faucet of claim 4, wherein: the faucet body comprises a faucet shell and a reverse backflow body fixedly connected below the faucet shell, the control valve core is installed in the faucet shell, the reverse backflow body is provided with a transition cavity, the wastewater inlet pipe is communicated with the transition cavity, the transition hole is formed in the bottom wall of the transition cavity, and the vent hole is communicated with the bottom end of the transition hole and the top end of the wastewater outlet pipe.

6. The water purifying faucet of claim 1, wherein: the waste water outlet pipe comprises a front waste water outlet pipe and a rear waste water outlet pipe, the front waste water outlet pipe and the faucet body are integrally formed and vertically arranged, and the rear waste water outlet pipe is fixedly connected to the bottom end of the front waste water outlet pipe; the transition hole and the faucet body are integrally formed, are vertically arranged and are positioned above the front end wastewater outlet pipe; the vent hole is communicated with a waste water outlet pipe at the front end.

7. The water purifying faucet of claim 6, wherein: the waste water inlet pipe comprises a front waste water inlet pipe and a rear waste water inlet pipe, the rear waste water inlet pipe and the faucet body are integrally formed and are obliquely arranged, and the top end of the rear waste water inlet pipe is communicated with the top end of the transition hole; the front end waste water inlet pipe is fixedly connected to the bottom end of the rear end waste water inlet pipe.

8. The water purifying faucet of claim 1, wherein: the tail end of the vent hole is positioned at the rear side of the faucet body.

9. The water purifying faucet of claim 1, wherein: the water purification faucet further comprises an on-table mounting assembly, a mounting hole is formed in the table top of the counter basin, the on-table mounting assembly is mounted in the mounting hole, and the faucet body is fixedly connected with the on-table mounting assembly.

10. The water purifying faucet of claim 6, wherein: the mounting assembly on the platform comprises a flange plate, a screw rod, a rotation stopping piece and a nut, wherein the flange plate abuts against the top end face of the mounting hole and is provided with an assembling hole corresponding to the mounting hole; the screw rod penetrates through the assembly hole and then extends into the lower part of the mounting hole, and the screw rod can only rotate relative to the flange plate; the rotation stopping piece extends along the length direction of the screw rod, the top end of the rotation stopping piece is connected with the flange plate and the screw rod, the bottom end of the rotation stopping piece is only connected with the screw rod, and the rotation stopping piece can limit the axial movement of the screw rod; the nut is screwed on the periphery of the screw rod, and the rotation stopping piece can limit the rotation of the nut; the screw rod is rotated above the table top, the rotation stopping piece is kept still, and the nut can move upwards or downwards along with the rotation of the screw rod under the rotation stopping effect of the rotation stopping piece, so that the nut is pressed against or departs from the lower end face of the mounting hole.