CN209100699U - A kind of double filter device single valve control filtration cocks - Google Patents

Abstract

The utility model relates to water treatment, and provides a single-valve control water filtration faucet with double filtering devices, comprising a faucet body, a direct drinking filter core, a cold and hot filter core, a casing, three-in and two-out valves, a universal water outlet hose and a water outlet horizontal The lower part of the faucet body is provided with a cold water inlet channel and a hot water inlet channel, as well as a cold water outlet channel and a clean water outlet channel passing through the lower part of the faucet body, and the second water outlet of the three-in-two-out valve is connected to the cold water outlet One end of the channel is connected, one end of the cold water outlet channel away from the three-in-two-outlet valve is detachably and sealedly connected to the water inlet of the direct-drinking filter element, and one end of the clean water outlet channel is located in the faucet body and communicates with the second water outlet channel, One end of the clean water outlet channel away from the faucet body is detachably and sealedly connected to the water outlet of the direct drinking filter element, and the water outlet port of the casing is detachably embedded in the hollow positioning ring of the water outlet horizontal pipe. The utility model solves the problems of complex structure, inconvenient use and large space occupation of the existing water purification faucet.

Description

A double filter device single valve control water filtration faucet

technical field

The utility model relates to plumbing equipment, in particular to a water filtering tap controlled by a double filter device and a single valve.

Background technique

As we all know, the tap water that people use has been sterilized and disinfected after it comes out of the water plant, but it is subject to secondary pollution when it has been used for many years. At the same time, the tap water contains a lot of residual chlorine, which is very important for living natural substances such as water. For algae and bacteria, it can penetrate the cell wall, oxidize its enzyme system (enzyme is a biological catalyst) to make it inactive, so that the life activities of bacteria are hindered and die. Residual chlorine is also harmful to the human body. It can cause dryness, breakage and split ends of the hair, bleaching of the skin, peeling of the skin layer, and extremely itchy skin allergies. Chlorine produces carcinogens such as chloroform when heated with organic substances in water. Therefore, it is particularly important to purify before using tap water. However, the faucets for the treatment and filtration of tap water are basically complicated in structure and take up a lot of space. The structure of the water treatment faucet is relatively large, and it is inconvenient to replace the direct-drinking filter element. For this reason, although there are some products that set the direct-drinking filter element under the kitchen, the set structure makes the direct-drinking filter element always affected by the water at the water supply end. The pressure impact greatly shortens the service life of the direct-drinking filter element and even damages the direct-drinking filter element when the water pressure is too high.

Utility model content

Therefore, in view of the above-mentioned problems, the present invention proposes a dual-use filter with simple and reasonable structure, low cost, flexible and convenient installation and use, quick and convenient replacement of the direct-drinking filter element, small occupied space, and no impact of the direct-drinking filter element from water pressure. Filtration unit Single valve control filter tap.

In order to solve this technical problem, the utility model adopts the following scheme: a single-valve control water filtration faucet with a double filter device, including a faucet body, a direct-drinking filter core, a cold and hot filter core, a casing, three-in and two-out valves, and a universal water outlet. The hose and the horizontal water outlet pipe, the lower part of the faucet body is provided with a cold water inlet channel and a hot water inlet channel, as well as a cold water outlet channel and a clean water outlet channel passing through the lower part of the faucet body, and the three-in and two-out valves are provided in the In the middle of the faucet body, the three-in-two-out valve includes a valve body and a first water inlet, a second water inlet, a third water inlet, a valve core, a first water outlet and a second water outlet arranged on the valve body. The first water inlet and the second water inlet of the three-in-two-out valve are connected with the first water outlet through the valve core control, and the third water inlet of the three-in-two-out valve is connected with the second water outlet through the valve core control. The water outlet is connected through or off, the hot water inlet channel is communicated with the first water inlet of the three-in-two-outlet valve, and the cold water inlet channel is respectively connected with the second water inlet and the third water inlet of the three-inlet and two-outlet valve. The water inlet is connected, the universal water outlet hose is sealedly connected to the top of the faucet body, the upper part of the faucet body is provided with a first water outlet channel and a second water outlet channel, and the first water outlet of the three-in-two-out valve is connected to the top of the faucet body. One end of the first water outlet channel is connected, one end of the first water outlet channel away from the three-inlet and two-outlet valve is connected with the universal water outlet hose, and the second water outlet of the three-inlet and two-outlet valve is connected with one end of the cold water outlet channel, One end of the cold water outlet channel away from the three-in-two-outlet valve is detachably and sealedly connected to the water inlet of the direct-drinking filter element, and one end of the clean water outlet channel is located in the faucet body. One end of the channel away from the faucet body is detachably and sealedly connected to the water outlet of the direct drinking filter element, the water inlet end of the water outlet horizontal pipe is connected to one side of the faucet body, and the water inlet end of the water outlet horizontal pipe and the second water outlet channel are far away from the purified water. One end of the channel is connected, and one end of the casing is sealed and connected to the free end of the universal water outlet hose away from the faucet body. In the housing cavity and the water inlet of the hot and cold filter element is communicated with the universal water outlet hose, one end of the housing away from the universal water outlet hose is provided with a detachable and sealed water outlet interface, and the water outlet interface is connected with the cold and hot water outlet. The water outlet of the filter element is communicated with each other, the end of the water outlet end of the water outlet horizontal pipe is extended outward with a hollow positioning ring that matches the outer diameter of the water outlet port, and the water outlet port of the shell is detachably embedded in the water outlet port. on the hollow positioning ring of the tube.

Further, it also includes a bubbler, the bubbler is sleeved on the water outlet end of the water outlet port, and the cold and hot mixed filtered water flowing through the water outlet port is bubbled through the bubbler to produce water.

Further, it also includes a connecting seat, the connecting seat is rotatably and sealingly connected to the top of the faucet body, the connecting seat is provided with a first water outlet channel and a second water outlet channel, and the universal water outlet hose is connected to the connecting seat. The top is sealed and connected, and the water outlet of the first water outlet channel of the faucet body is connected with the universal water outlet hose through the first water outlet flow channel of the connecting seat, and the hot and cold mixed water flows out from the universal water outlet hose. The second water outlet channel of the faucet body is connected with one side of the connection seat in a sealed manner and communicated with the water inlet end of the water outlet horizontal pipe through the second water outlet channel of the connection seat.

Furthermore, the top of the faucet body is provided with a hollow cavity whose inner diameter matches the outer diameter of the connection seat, and the outer side wall of one end of the connection seat connected to the faucet body is provided with a first annular groove, the first annular groove is formed. A sealing ring is sleeved on the groove, and the connecting seat is rotatably and sealedly connected with the hollow cavity at the top of the faucet body through the sealing ring. One end of the water outlet channel far away from the second water outlet of the three-in-two-outlet valve is connected, and the second water outlet flow channel of the connecting seat is rotatably and sealedly connected to the end of the hollow cylinder away from the second water outlet channel, and the first water outlet channel is far away from the third water outlet channel. One end of the inlet and outlet valves is connected to the hollow cavity and sends the hot and cold mixed water to the first outlet channel of the connecting seat, and the cold and hot mixed water is sent to the universal outlet hose, and the connecting seat is worn on the top of the faucet body. The outer side wall of the hollow cavity is provided with a clamping slot, and the inner side wall of the hollow cavity at the top of the faucet body is provided with a buckle that is adapted to the clamping slot of the connecting seat, and the connecting seat is hollow through the clamping slot and the top of the faucet body. The snap fit on the cavity is rotatably partially penetrated into the hollow cavity at the top of the faucet body, the connecting seat is located in the center of the snap groove and is recessed toward the center of the connecting seat to form a second annular groove, and the top of the faucet body is located at the center of the connecting seat. Correspondingly, the second annular groove is provided with a detachable limit post through which the top of the faucet body is snapped to the connecting seat, and the connecting seat is clamped in the hollow cavity of the top of the faucet body.

Further, the limiting column is a screw.

Further, the second water outlet channel of the connection seat is provided with a water inlet end whose outer diameter is matched with the inner diameter of the hollow cylinder of the faucet body, and a third annular groove is arranged on the water inlet end of the second water outlet channel, The third annular groove is sleeved with a sealing ring, and the water inlet end of the second water outlet channel is rotatably and sealedly connected to the hollow cylinder of the faucet body through the sealing ring.

By adopting the aforementioned technical scheme, the beneficial effect of the present utility model is that: by setting the hot water inlet channel and the cold water inlet channel on the faucet body, through the three-in-two-out valve, the hot and cold mixed water is controlled to flow out from the universal water through the first water outlet channel. The hose is sent to the hot and cold filter element for filtration, and then the hot and cold mixed filtered water flows out from the water outlet of the shell, or the cold water is controlled by the three-in-two-outlet valve to be sent to the direct-drinking filter element under the kitchen through the cold-water outlet channel for filtering and direct drinking. The purified water filtered by the filter element flows through the purified water outlet channel to the second water outlet channel, and then is sent to the water outlet horizontal pipe to flow out straight drinking water, so that when people use it, the universal water outlet hose can be controlled by controlling the three-in and two-out valves. The hot and cold mixed filtered water flows out or the straight drinking water is sent from the water outlet horizontal pipe. The user can switch between the hot and cold mixed filtered water and the direct drinking water by operating the three-in and two-out valves, and the other one can be automatically closed without operating the two on-off valves. The water outlet of the water flow does not need to be checked whether the other water is closed. At the same time, the cold water outlet channel and the clean water outlet channel are arranged to be detachably sealed and connected to the water inlet and outlet of the direct drinking filter element respectively, so that the dual filter device of the present invention is single. The valve-controlled water filtration faucet can quickly replace the direct drinking filter in the kitchen space. The hot and cold filter can be quickly replaced by disassembling and assembling the water outlet of the casing. The replacement speed is fast, and the replacement of the direct drinking filter and the hot and cold filter can be performed. Not limited by space, easy to replace, and the water inlet of the direct drinking filter and the hot and cold filter are set after the water outlet of the three-in-two-out valve, so that the direct-drinking filter and the hot and cold filter will not always be Affected by the water flow of the water supply, there is no need to bear the pressure of the water supply all the time, and the service life of the direct drinking filter element and the hot and cold filter element is prolonged. The universal water outlet hose and the casing can be detached from the water outlet horizontal pipe, and the cold and hot mixed filtered water can be pulled in any direction along the length set by the universal water outlet hose, so that the user can use it flexibly and changeable. The upper part of the main body makes the horizontal water outlet pipe not only used as a horizontal bar to support the universal water outlet hose and the shell, but also used for the clean water outlet pipe for direct drinking water, which greatly saves the occupation of the clean water faucet compared with the existing clean water faucet. The space, especially the direct-drinking filter element is placed under the kitchen without the continuous impact of water pressure, which greatly simplifies the overall structural space of the faucet with filtered water treatment. In the shell, the structure is further simplified, which conforms to the simple and beautiful aesthetic design of modern design. The structure is simple and novel, and the use is more convenient. It can realize various functions of the water treatment faucet and greatly reduce the cost of construction. The hot and cold mixed filtered water can be rotated with the faucet body as the axis through the connecting seat, which makes the user more flexible and convenient to use, and can be widely popularized and applied.

Description of drawings

1 is a perspective view of an embodiment of the present utility model,

FIG. 2 is a schematic view of the longitudinal section of the universal water outlet pipe, the horizontal water outlet pipe and the faucet body according to the embodiment of the present utility model.

Detailed ways

The present utility model will now be further described with reference to the accompanying drawings and specific embodiments.

1 and 2, the preferred dual-filter device single-valve control water filtration faucet of the present invention includes a faucet body 1, a direct-drinking filter core 2, a hot and cold filter core 3, a housing 4, three-in and two-out valves 5, The universal water outlet hose 6, the water outlet horizontal pipe 7, the connecting seat 8 and the bubbler 9, the lower part of the faucet body 1 is provided with a cold water inlet channel 101 and a hot water inlet channel 102, and the cold water passing through the lower part of the faucet body 1. The water outlet channel 103 and the clean water outlet channel 104, the three-in, two-out valve 5 is penetrated in the middle of the faucet body 1, and the three-in, two-out valve 5 includes a valve body and a first water inlet, a second water inlet and a second outlet on the valve body. The second water inlet, the third water inlet, the valve core, the first water outlet and the second water outlet, the first water inlet and the second water inlet of the three-in-two-outlet valve 5 are controlled by the valve core and lead to the first water outlet. On or off connection, the third water inlet of the three-in, two-out valve 5 is connected with the second water outlet through the valve core control, and the hot water inlet channel 102 is connected with the third water outlet of the three-in, two-out valve 5. A water inlet is connected, and the cold water inlet channel 101 is connected with the second water inlet and the third water inlet of the three-in-two-out valve 5 respectively. Two water outlet channels 106, the first water outlet of the three-in-two-outlet valve 5 is communicated with one end of the first water outlet channel 105, the connecting seat 8 is rotatably and sealingly connected to the top of the faucet body 1, and the connecting seat 8 There are a first water outlet channel 81 and a second water outlet channel 82, the universal water outlet hose 6 is sealingly connected to the top of the connecting seat 8, and the water outlet of the first water outlet channel 105 of the faucet body 1 flows through the first water outlet of the connecting seat 8. The channel 81 is connected with the universal water outlet hose 6, and the hot and cold mixed water flows out from the universal water outlet hose 6. The water inlet end of the water outlet horizontal pipe 7 is sealedly connected to one side of the connection seat 8 and the second outlet of the faucet body 1 is sealed. The channel 106 is communicated with the water inlet end of the water outlet horizontal pipe 7 through the second water outlet channel 82 of the connection seat 8. The top of the faucet body 1 is provided with a hollow cavity 107 whose inner diameter matches the outer diameter of the connection seat 8. The outer side wall of one end of the connecting seat 8 connected to the faucet body 1 is provided with a first annular groove, and a sealing ring 10 is sleeved on the first annular groove. The faucet body 107 can be rotatably sealed and connected, the center of the bottom of the hollow cavity 107 of the faucet body 1 is provided with a hollow cylinder 1071, and one end of the hollow cylinder 1071 and the second water outlet channel 106 away from the three-in-two-out valve 5. One end of the second water outlet The second water outlet channel 82 of the connecting seat 8 is provided with a water inlet end whose outer diameter is adapted to the inner diameter of the hollow cylinder 1071 of the faucet body 1 , and the water inlet end of the second water outlet channel 82 is provided with a water inlet end. Three annular grooves, a sealing ring 11 is sleeved on the third annular groove, and the water inlet end of the second water outlet channel 82 is rotatably and sealedly connected to the hollow cylinder 1071 of the faucet body 1 through the sealing ring 11 . One end of a water outlet channel 105 away from the three-in-two-outlet valve 5 is communicated with the hollow cavity 107 and sends the hot and cold mixed water to the first water outlet channel 81 of the connecting seat 8 and sends the cold and hot mixed water to the universal water outlet hose 6 , The connecting seat 8 is disposed on the outer side wall of the hollow cavity 107 at the top of the faucet body 1, and a clamping groove 83 is formed. The matching buckle 108, the connecting seat 8 is partially rotatably penetrated in the hollow cavity 107 at the top of the faucet body 1 through the card slot 83 and the buckle 108 on the top hollow cavity 107 of the faucet body 1. The said The connecting seat 8 is located in the center of the slot 83 and is recessed toward the center of the connecting seat to form a second annular groove. The top of the faucet body 1 is located at the corresponding position of the second annular groove of the connecting seat 8. In the second annular groove of the connecting seat 8, the connecting seat is clamped to a detachable limit post in the hollow cavity at the top of the faucet body. The limit post is a screw. The water outlet is communicated with one end of the cold water outlet channel 103, and one end of the cold water outlet channel 103 away from the three-in-two-outlet valve 5 is detachably connected to the water inlet 21 of the direct-drinking filter core 2, and the clean water outlet channel 104 is located in the faucet body. The inner end of 1 is communicated with the second water outlet channel 106. One end of the purified water outlet channel 104 away from the faucet body 1 is detachably connected to the water outlet 22 of the direct drinking filter element 2. One end of the housing 4 is connected to the universal water outlet. The pipe 6 is sealed and connected away from the free end of the faucet body 1. The housing 4 is provided with a cavity for accommodating the hot and cold filter core 3. The water inlet of 3 is communicated with the universal water outlet hose 6, and one end of the housing 4 away from the universal water outlet hose 6 is provided with a water outlet port 41 that is detachably sealed and connected, and the water outlet port 41 is connected to the hot and cold filter core 3. The water outlet is connected, and the water outlet end of the water outlet horizontal pipe 7 is extended outward with a hollow positioning ring 71 that matches the outer diameter of the water outlet port 41. The water outlet port 41 of the housing 4 is detachably embedded in the On the hollow positioning ring 71 of the water outlet horizontal pipe 7, the bubbler 9 is sleeved on the water outlet end of the water outlet port 41 to bubble the hot and cold mixed filtered water flowing through the water outlet port 41 through the bubbler 9 to produce water.

In the utility model, the structure of the water outlet horizontal pipe extending outward from the end of the water outlet end can also form a detachable and positioning structure such as a snap fit matched with the water outlet interface of the shell. Co., Ltd., etc. can be purchased.

In the utility model, the hot water inlet channel and the cold water inlet channel are arranged on the faucet body, and the cold and hot mixed water is controlled by the three-in-two-outlet valve through the first water outlet channel, and is sent to the cold and hot filter core by the universal water outlet hose after being filtered and then The water outlet of the shell flows out the hot and cold mixed filtered water or controls the cold water to be sent to the water inlet of the direct drinking filter element under the kitchen through the cold water outlet channel through the three-in and two-out valve, and the purified water filtered by the direct drinking filter element flows through the purified water The water outlet channel is sent to the second water outlet channel and then sent to the water outlet horizontal pipe to flow out straight drinking water, so that when people use it, by controlling the three-in and two-out valves, it is possible to control the flow of hot and cold mixed filtered water from the universal water outlet hose or from the water outlet horizontal pipe. To send direct drinking water, the user can switch between hot and cold mixed water and purified water by operating the three-in and two-out valves. It is not necessary to operate the two on-off valves to automatically close the outlet of the other water flow, and there is no need to worry about whether the other water is not. At the same time, the cold water outlet channel and the clean water outlet channel are arranged to be detachable and sealed with the water inlet and outlet of the direct drinking filter element, so that the dual filter device single valve control water filter tap of the present utility model can be quickly replaced in the kitchen space. The direct-drinking filter element can be quickly replaced by disassembling and assembling the water outlet of the casing. The replacement speed is fast, and at the same time, the replacement of the direct-drinking filter element and the hot and cold filter element is not limited by space, and the replacement is convenient. The water inlet of the core and the water inlet of the hot and cold filter core are set after the water outlet of the three-in-two-out valve, so that the direct-drinking filter core and the cold and hot filter core will not be impacted by the water flow of the water supply all the time, and do not need to bear the water supply pressure all the time. Extend the service life of the direct-drinking filter element and the hot and cold filter element. The water outlet of the casing is detachably embedded in the hollow positioning ring of the water outlet horizontal pipe, so that the user can detach the universal water outlet hose from the casing. On the horizontal water outlet pipe, pull the hot and cold mixed filtered water in any direction along the length set by the universal water outlet hose, so that the user can use it flexibly. Compared with the existing water purification faucet, the space occupied by the water purification faucet is greatly saved, especially the direct drinking filter element is not protected from water. The pressure and continuous impact are installed under the kitchen, which greatly simplifies the overall structural space of the faucet with filtered water treatment. The cold and hot filter elements are installed in the shell connected to the free end of the universal water outlet hose, which further simplifies the structure and conforms to the modern design. Simple and beautiful aesthetic design, simple and novel structure, more convenient to use, realize various functions of water treatment faucet and greatly reduce the cost of construction. It is the axis of rotation, which makes the user more flexible and convenient to use, and can be widely used.

Although the present invention has been specifically shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that changes in form and detail may be made without departing from the spirit and scope of the present invention as defined by the appended claims. Various changes are made to the present utility model, which are all within the protection scope of the present utility model.

Claims (6)

1. A dual-filter device single-valve control water filtration tap, characterized in that: it comprises a tap body, a direct drinking filter core, a hot and cold filter core, a housing, three-in and two-out valves, a universal water outlet hose and a water outlet horizontal pipe, The lower part of the faucet body is provided with a cold water inlet channel and a hot water inlet channel, as well as a cold water outlet channel and a clean water outlet channel passing through the lower part of the faucet body. The two-inlet valve includes a valve body and a first water inlet, a second water inlet, a third water inlet, a valve core, a first water outlet and a second water outlet arranged on the valve body. The first water inlet and the second water inlet are connected with the first water outlet through the valve core control, and the third water inlet of the three-in-two-outlet valve is connected with the second water outlet through the valve core control. , the hot water inlet channel is communicated with the first water inlet of the three-in, two-out valve, and the cold water inlet channel is communicated with the second and third water inlets of the three-in, two-out valve, respectively. The universal water outlet hose is sealingly connected to the top of the faucet body, the upper part of the faucet body is provided with a first water outlet channel and a second water outlet channel, and the first water outlet of the three-in-two-outlet valve is communicated with one end of the first water outlet channel One end of the first outlet channel away from the three-inlet and two-outlet valve is connected with the universal outlet hose, and the second outlet of the three-inlet and two-outlet valve is communicated with one end of the cold water outlet channel, and the cold water outlet channel is far away from the three inlet and outlet channels. One end of the inlet and outlet valves is detachably and sealedly connected to the water inlet of the direct drinking filter element. The water outlet of the drinking filter element can be disassembled and sealed, the water inlet end of the water outlet horizontal pipe is connected with one side of the faucet body, and the water inlet end of the water outlet horizontal pipe is connected with the end of the second water outlet channel away from the clean water outlet channel, so One end of the casing is sealed and connected to the free end of the universal water outlet hose away from the faucet body, and the casing is provided with a cavity for accommodating the hot and cold filter core, and the cold and hot filter core is penetrated in the casing cavity and cools. The water inlet of the hot filter element is communicated with the universal water outlet hose, and one end of the housing away from the universal water outlet hose is provided with a detachable and sealed water outlet port, and the water outlet port is communicated with the water outlet of the cold and hot filter element, The water outlet end of the horizontal water outlet pipe is extended outward with a hollow positioning ring matching the outer diameter of the water outlet port, and the water outlet port of the casing is detachably embedded on the hollow positioning ring of the water outlet horizontal pipe. 2. The single-valve control water filtration faucet of the double filter device according to claim 1, characterized in that: it further comprises a bubbler, and the bubbler is sleeved on the water outlet end of the water outlet and will flow through the hot and cold water of the water outlet. The mixed filtered water is bubbled through a bubbler to produce water. 3. The single-valve control water filtration faucet of the double filter device according to claim 1, characterized in that it further comprises a connecting seat, the connecting seat is rotatably and sealingly connected to the top of the faucet body, and the connecting seat is provided with a first outlet. The water flow channel and the second water outlet channel, the universal water outlet hose is sealedly connected with the top of the connecting seat, and the water outlet of the first water outlet channel of the faucet body is connected with the universal water outlet hose through the first water outlet channel of the connecting seat. The hot and cold mixed water flows out to the water outlet hose, the water inlet end of the water outlet horizontal pipe is sealed with one side of the connecting seat, and the second water outlet channel of the faucet body is connected to the water inlet end of the water outlet horizontal pipe through the second water outlet channel of the connecting seat. connected. 4. The single-valve control water filtration faucet according to claim 3, characterized in that: the top of the faucet body is provided with a hollow cavity whose inner diameter is matched with the outer diameter of the connecting seat, and the connecting seat and the faucet body are provided with a hollow cavity. The outer side wall of one end of the connection is provided with a first annular groove, and a sealing ring is sleeved on the first annular groove. The center of the bottom of the hollow cavity is provided with a hollow cylinder, and one end of the hollow cylinder is communicated with the end of the second water outlet channel away from the second water outlet of the three-in-two-out valve, and the second water outlet flow channel of the connecting seat and the hollow cylinder are far away from the second water outlet. One end of the two water outlet channels can be rotatably sealed and connected, and one end of the first water outlet channel away from the three-in-two-outlet valve is communicated with the hollow cavity and sends the hot and cold mixed water to the first water outlet channel of the connecting seat. Water to the universal water outlet hose, the connecting seat is provided with a slot on the outer side wall of the hollow cavity at the top of the faucet body, and the inner side wall of the hollow cavity at the top of the faucet body is provided with a slot corresponding to the connecting seat. The matching buckle, the connecting seat is partially rotatably penetrated in the hollow cavity at the top of the faucet body through the card slot and the buckle on the hollow cavity at the top of the faucet body, and the connecting seat is located in the center of the card slot to the connecting seat. The central depression forms a second annular groove, and the top of the faucet body is located at the corresponding position of the second annular groove of the connecting seat. The detachable limit post in the hollow cavity at the top of the faucet body. 5 . The single-valve control water filtration faucet of the dual filter device according to claim 4 , wherein the limiting column is a screw. 6 . 6 . The single-valve control water filtration faucet of the double filter device according to claim 4 , wherein the second water outlet channel of the connecting seat is provided with a water inlet end whose outer diameter is adapted to the inner diameter of the hollow cylinder of the faucet body, 7 . The water inlet end of the second water outlet channel is provided with a third annular groove, the third annular groove is sleeved with a sealing ring, and the water inlet end of the second water outlet channel is connected to the hollow column of the faucet body through the sealing ring. Body rotatable sealing connection.