Dual-purpose drawing faucet

Abstract

The invention provides a dual-purpose drawing faucet, and belongs to the technical field of faucets. The problem that inconvenience is caused due to the fact that switching operation of an existing faucet is prone to confusion is solved. The dual-purpose drawing faucet comprises a faucet body with a control valve element and a drawing pipe, an inner pipe is arranged in the drawing pipe in a penetrating mode, the dual-purpose drawing faucet further comprises a three-way pipe fitting, the three-way pipe fitting is provided with a first water inlet end, a second water inlet end and a connecting end, one end of the drawing pipe is communicated with the connecting end, one end of the inner pipe extends out of the drawing pipe and extends into the second water inlet end, and the other end of the inner pipe is communicated with the three-way pipe fitting. An opening and closing valve is fixed to the other end of the inner pipe and fixed to the other end of the drawing pipe, a cylindrical operation cylinder is arranged on the outer side of the opening and closing valve in a sleeving and axial limiting mode, a water passing gap is formed between the operation cylinder and the outer side of the opening and closing valve, and an opening and closing piece capable of controlling the opening and closing valve to be opened and closed during circumferential rotation is arranged on the opening and closing valve; the operation cylinder and the opening and closing piece are circumferentially fixed. The dual-purpose drawing faucet has the advantage of being convenient to use.

Description

Technical Field

[0001] The present invention belongs to the technical field of faucets and relates to a dual-purpose pull-out faucet. Background Art

[0002] With the improvement of living standards, people's requirements for faucets are also constantly increasing. For example, a pull-out kitchen faucet can be selected to pull out the water outlet end from the kitchen faucet for convenient rinsing nearby; another example is to purchase a water purifier to filter and purify tap water and then cooperate with a water purification faucet for water output. Currently, in most families, a kitchen faucet is installed on the countertop for using tap water, and at the same time, a water purification faucet is installed separately on the kitchen countertop for drinking water. However, for some families with limited kitchen countertop space, the installation and use of two faucets occupy a relatively large amount of space.

[0003] For this reason, people have designed a pull-out type cold and hot water faucet terminal water purification device and applied for a Chinese patent, and its application number is: 201821519262.9; its publication number is: CN208687011U; the pull-out type cold and hot water faucet terminal water purification device includes a faucet body, a filter element, a housing, a pull-out pipe, a three-inlet two-outlet valve and a water outlet pipe. A pull-out hole is provided at the longitudinal center of the faucet body. A cold water inlet channel and a hot water inlet channel are provided at the lower part of the faucet body. Part of the three-inlet two-outlet valve is inserted into the middle of the faucet body. The three-inlet two-outlet 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 provided on the valve body. The first water inlet and the second water inlet of the three-inlet two-outlet valve are controlled by the valve core to be conductively or cut-off connected to the first water outlet. The third water inlet of the three-inlet two-outlet valve is controlled by the valve core to be conductively or cut-off connected to the second water outlet. The hot water inlet channel is communicated with the first water inlet of the three-inlet two-outlet valve. The cold water inlet channel is respectively communicated with the second water inlet and the third water inlet of the three-inlet two-outlet valve. The water outlet pipe is connected to the top end of the pull-out hole in the upper part of the faucet body. A cold and hot mixed water flow channel and a cold water flow channel that partially penetrate the lower part of the faucet body are also provided at the lower part of the faucet body. The first water outlet of the three-inlet two-outlet valve is communicated with the cold and hot mixed water flow channel inside the lower part of the faucet body. The second water outlet of the three-inlet two-outlet valve is communicated with the cold water flow channel inside the lower part of the faucet body. The pull-out pipe is a pipe-in-pipe composed of an inner pipe and an outer pipe. The end of the cold water flow channel far from the faucet body is communicated with the inner pipe of the pull-out pipe to supply water to the inner pipe of the pull-out pipe. The end of the cold and hot mixed water flow channel far from the faucet body is communicated with the water flow channel formed by the outer side wall of the inner pipe of the pull-out pipe and the inner side wall of the outer pipe to supply cold and hot mixed water to the water flow channel formed by the outer side wall of the inner pipe of the pull-out pipe and the inner side wall of the outer pipe. The pull-out pipe passes through the pull-out hole in the faucet body and extends towards the water outlet pipe to form a pull-out water outlet structure. One end of the housing is detachably and hermetically connected to the end of the pull-out pipe passing through the water outlet pipe. A cavity for accommodating the filter element is provided inside the housing. A first hollow cylinder communicating with the cavity of the housing is provided in the middle of one end of the housing connected to the pull-out pipe, and through holes communicating with the cavity of the housing are provided on the periphery of the first hollow cylinder. The end of the first hollow cylinder of the housing facing the pull-out pipe is hermetically connected to the inner pipe of the pull-out pipe. The filter element is arranged inside the housing, and the water inlet of the filter element is detachably and hermetically connected to the first hollow cylinder of the housing, and the water flowing out of the inner pipe of the pull-out pipe is sent to the water inlet of the filter element through the first hollow cylinder to enter the filter element for filtration. A second hollow cylinder extending into the cavity of the housing is provided at the center of the end of the housing far from the pull-out pipe, and water outlet holes communicating with the cavity are provided on the periphery of the second hollow cylinder. An interval gap is provided between the outer wall of the filter element and the inner wall of the housing. The cold and hot mixed water provided by the water flow channel formed by the outer side wall of the inner pipe of the pull-out pipe and the inner side wall of the outer pipe passes through the through holes of the housing, flows through the interval gap between the outer wall of the filter element and the inner wall of the housing, and is sent out through the water outlet holes at the end of the housing far from the pull-out pipe. The water outlet of the filter element is detachably and hermetically connected to the second hollow cylinder of the housing, and the purified water after being filtered by the filter element is sent out through the second hollow cylinder.

[0004] In the pull-out hot and cold water faucet terminal water purification device, the pull-out tube in the faucet body is divided into an outer tube and an inner tube inserted in the outer tube, wherein the gap between the outer tube and the inner tube allows hot and cold mixed water to pass through and flow out as tap water, and the inner tube allows cold water to pass through and flow out as purified water for drinking after being filtered by a filter element connected to the water outlet. The pull-out hot and cold water faucet terminal water purification device integrates the tap water faucet and the water purification faucet into one faucet, which reduces the occupied space and is convenient for users to install and use.

[0005] However, the pull-out type cold and hot water faucet terminal water purification device still has some shortcomings in actual use: the switching of the two water outlet waterways in the pull-out type cold and hot water faucet terminal water purification device is controlled by a three-inlet and two-outlet valve in conjunction with a separate handle. For example, swinging the handle to one side will output tap water, and swinging the handle to the other side will output purified water. This switching method is not easy to remember and is easy to confuse. Even if a mark is made on the faucet handle, it is inconvenient to observe due to the small size of the handle, which causes great inconvenience to the user. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems in the prior art and to propose a dual-purpose pull-out faucet, which solves the problem that the switching operation of the existing faucet is easily confused and causes inconvenience.

[0007] The purpose of the present invention can be achieved by the following technical solutions: A dual-purpose pull-out faucet, comprising a faucet body with a control valve core and a pull-out tube inserted into the faucet body, wherein an inner tube is inserted into the pull-out tube, and the dual-purpose pull-out faucet further comprises a three-way pipe fitting, wherein the three-way pipe fitting has a water inlet end 1, a water inlet end 2 and a connecting end, wherein the water outlet of the control valve core is connected to the water inlet end 1, one end of the pull-out tube is connected to the connecting end, one end of the inner tube extends out of the pull-out tube and extends into the water inlet end 2, and a seal is formed between the outer side of the inner tube end and the inner wall of the water inlet end 2. The inner tube is sealed, and an on-off valve is fixed to the other end of the inner tube and the on-off valve is fixed to the other end of the pull-out tube, the inner tube is connected to the inlet of the on-off valve, the outer side of the on-off valve is sleeved and axially limited with a cylindrical operating cylinder, and one end of the operating cylinder is sleeved on the outer side of the pull-out tube, and a water gap connected to the inside of the pull-out tube is formed between the operating cylinder and the outer side of the on-off valve, the on-off valve is provided with an on-off member which can control the opening and closing of the on-off valve when it rotates circumferentially, the inner side of the operating cylinder has a protruding connecting portion, and the connecting portion is circumferentially fixed to the on-off member.

[0008] The inlet of the control valve core of this dual-purpose pull-out faucet is connected to the water supply pipe, which can specifically be a single cold water supply pipe or supply cold and hot water simultaneously. After the cold and hot water are mixed by the control valve core, water flows out, and the outlet of the control valve core can be connected to one of the inlet ends of a three-way pipe fitting through a pipeline. The port of the second inlet end is directly connected to the outlet of an existing water purifier through a pipeline. In this way, after the tap water flowing out from the control valve core enters the three-way pipe fitting, it first flows between the outer side of the inner pipe and the inner wall of the three-way pipe fitting, and then flows to the gap between the pull-out pipe and the inner pipe at the connection end. Since a seal is formed between the outer side of the inner pipe and the inner wall of the second inlet end, the purified water sent out by the water purifier will directly enter the inner pipe, realizing the independent transportation of tap water and purified water without mutual contamination. When using tap water, operate the operating handle on the faucet body to open the control valve core. The tap water flows out from the outlet of the control valve core, passes through the three-way pipe fitting and the gap between the pull-out pipe and the inner pipe, and then flows out from the other end of the pull-out pipe. Finally, it flows out through the water passing gap formed between the inner wall of the operating cylinder and the outer side of the opening and closing valve for use. When purified water needs to be used, rotate the operating cylinder circumferentially. Rely on the connecting part on the inner side of the operating cylinder to drive the opening and closing part to rotate circumferentially, thereby controlling the opening of the opening and closing valve. The purified water is transported along the inner pipe from the water purifier to the opening and closing valve and is sent out through the outlet of the opening and closing valve for use. When the water outlet pipe including the pull-out pipe and the inner pipe needs to be pulled out entirely for use, hold the operating cylinder and pull it outwards. Since the operating cylinder is axially limited outside the opening and closing valve, and the opening and closing valve is fixed to both the pull-out pipe and the inner pipe at the same time, the pull-out pipe and the inner pipe can be pulled out simultaneously for use. Control the operating handle or the operating cylinder of the faucet body respectively according to needs to realize the use of tap water or purified water.

[0009] In this dual-purpose pull-out faucet, the faucet body, the control valve core inside the faucet body, and the operating handle used to control the opening and closing of the control valve core and other structures can select existing kitchen faucets and keep the structure unchanged, that is, the operating handle is arranged close to the control valve core and the inlet end of the pull-out pipe to maintain the user's existing tap water usage habit, while integrating the opening and closing valve and the operating structure of the purified water pipeline such as the operating cylinder into the outlet end of the inner pipe, keeping a certain distance from the operating handle of the faucet body, and using the unique shape of the cylindrical operating cylinder can be significantly different from the existing operating handle, providing an obvious difference in the operating structure for users, not easy to be confused, and facilitating the use of users.

[0010] In the above-mentioned dual-purpose pull-out faucet, one side of the water outlet end of the faucet body has a downwardly recessed orientation port, and a positioning member that can be snapped into the orientation port is fixed on the opening and closing valve. The opening of the downwardly recessed orientation port neither hinders the pulling out and use of the pull-out pipe, nor can it cooperate with the positioning member to position the circumferential direction of the opening and closing valve when the pull-out pipe retracts into the faucet body, ensuring that the opening and closing valve will not rotate synchronously with the operating cylinder when the operating cylinder is operated after the pull-out pipe retracts, without the user having to manually fix the opening and closing valve or the inner pipe separately, making the operation more convenient. In addition, when the orientation port is opened on the water outlet end of the faucet body, when the entire water outlet pipe is pulled out and used, the opening and closing valve will no longer be oriented and can rotate synchronously with the operating cylinder, and it is not easy to accidentally close the opening and closing valve due to holding the operating cylinder by hand, which is convenient for use.

[0011] In the above-mentioned dual-purpose pull-out faucet, the opening and closing valve is columnar, and its upper end has an inlet communicating with the inner pipe. The opening and closing member extends from the lower end of the opening and closing valve. The opening and closing member is tubular and the inner hole of the opening and closing member is the outlet of the opening and closing valve. The opening and closing member being columnar, that is, slender, with the inlet at the upper end and the outlet at the lower end, makes it so that the operating cylinder will not block the inlet and outlet after being sleeved, and the outlet being located at the lower end can maintain the water outlet direction that users are accustomed to, facilitating user use.

[0012] In the above-mentioned dual-purpose pull-out faucet, a static valve plate and a moving valve plate are arranged in the opening and closing valve. Notches are axially penetrated along the eccentric positions on the static valve plate and the moving valve plate. The notch on the static valve plate is always communicated with the inlet of the opening and closing valve. The upper end of the opening and closing member is circumferentially fixed to the moving valve plate and the notch on the moving valve plate is always communicated with the inner hole of the opening and closing member. When the opening and closing member rotates circumferentially, it can drive the moving valve plate to rotate relative to the static valve plate and make the notches of the two communicate with each other. The opening and closing valve adopts a valve plate structure similar to that of a ceramic valve core in cooperation with a tubular opening and closing member to achieve on-off control and the limitation of the water outlet direction, making the structure of the entire opening and closing valve more compact, facilitating miniaturization of the opening and closing valve and arranging it at the water outlet end of the faucet body.

[0013] In the above-mentioned dual-purpose pull-out faucet, the connecting portion is circular ring-shaped, and a water passing hole is axially penetrated through the connecting portion. The circular ring-shaped connecting portion makes the circumferential fixation between the operating cylinder and the opening and closing valve more stable and will not come off, thereby making the operation smoother and more stable. The opening of the water passing hole is used for tap water to pass through the water passing gap between the outside of the operating cylinder and the opening and closing valve to ensure smooth water passing.

[0014] In the above-mentioned dual-purpose pull-out faucet, a circular gear sleeve is sleeved on the outer side of the opening and closing member. The inner side of the gear sleeve and the outer side of the opening and closing member are engaged by a plurality of teeth. The connecting portion is sleeved on the outer side of the gear sleeve and the two are engaged by a plurality of teeth. The opening and closing member and the connecting portion are indirectly fixed through the gear sleeve, which facilitates installation and cooperation. Moreover, the method of cooperation by a plurality of teeth not only facilitates assembly but also ensures the stability of circumferential fixation.

[0015] In the above-mentioned dual-purpose pull-out faucet, the pull-out pipe includes an outer pipe sleeved on the outer side of the inner pipe, a cylindrical ball head member with a spherical surface on the outer side, and a cylindrical movable sleeve. One end of the outer pipe is communicated with the water outlet of the control valve core, and the other end is located inside the water outlet end of the faucet body. The ball head member is fixed at the port of the other end of the outer pipe. One end of the movable sleeve is sleeved on the outer side of the spherical surface of the ball head member and the movable sleeve can swing relative to the ball head member. The other end of the movable sleeve is sleeved on the outer side of the opening and closing valve and is fixed to the opening and closing valve. A through hole communicating the outer pipe and the water passing gap is formed through the movable sleeve. The pull-out pipe is divided into three parts. The outer pipe is used for conveying tap water. The ball head member is used as a joint. The cooperation between the movable sleeve and the ball head member enables the movable sleeve to swing in all directions relative to the ball head member. When the pull-out pipe is pulled out, the movable sleeve can be swung to the required angle for water outlet, which is more convenient to use. At the same time, by fixing the swingable movable sleeve to the opening and closing valve, the water outlet direction of the purified water can be adjusted equally conveniently, making the use of the purified water more convenient.

[0016] In the above-mentioned dual-purpose pull-out faucet, an annular limiting ring is fixed on the outer side of the other end of the opening and closing valve relative to the inner pipe. An annular snap ring is also axially fixed on the outer side of the opening and closing valve. The inner side of the operating cylinder has a protruding annular shoulder. Both the connecting portion and the shoulder are located between the limiting ring and the snap ring. The connecting portion can abut against the snap ring, and the shoulder can abut against the limiting ring. Connecting the limiting ring and the snap ring on the outer side of the opening and closing valve, and cooperating with the shoulder and the connecting portion on the operating cylinder to achieve axial limitation of the operating cylinder. The structure is relatively simple and the limitation is convenient.

[0017] In the above-mentioned dual-purpose pull-out faucet, the inner side of the end of the second water inlet end has a recessed annular relief groove, and one side of the relief groove extends to the end face of the second water inlet end. The side wall on the other side of the relief groove is located between the port of the second water inlet end and the first water inlet end. A connector is fixed to the port of one end of the inner pipe, and an annular sealing ring is fixed to the outer side of the connector. The outer side of the sealing ring abuts against the inner wall of the second water inlet end to form a seal, and when the sealing ring moves towards the connection end of the three-way pipe fitting, it can abut against the groove wall of the relief groove. The relative limit between the inner pipe and the three-way pipe fitting is realized through the setting of the relief groove and the sealing ring. When the pull-out pipe is pulled out for use, the inner pipe will not come out of the second water inlet end. When the inner pipe needs to be removed or replaced, the inner pipe is pushed into the three-way pipe fitting, so that the inner pipe and the connector extend out of the second water inlet end. After removing the connector, the inner pipe can be pulled out in the reverse direction, and the disassembly and assembly are relatively convenient. Among them, the sealing ring can not only play a sealing role, but also play a limiting role in preventing the inner pipe from coming out, achieving the effect of dual use of one thing.

[0018] In the above-mentioned dual-purpose pull-out faucet, a cylindrical sleeve is sleeved on the outer side of one end of the inner pipe. One end of the connector passes through the inner pipe, and the other end of the connector passes through the sleeve, and the inner pipe is tightly pressed between the sleeve and the connector. The connector is fixed to the inner pipe by means of internal and external clamping, and the disassembly and assembly are relatively convenient.

[0019] Compared with the prior art, the dual-purpose pull-out faucet has the following advantages: 1. In this dual-purpose pull-out faucet, the faucet body, the control valve core in the faucet body, and the operation handle for controlling the opening and closing of the control valve core and other structures can select existing kitchen faucets, that is, the operation handle is arranged close to the control valve core and the water inlet end of the pull-out pipe, maintaining the user's existing tap water usage habits, and integrating the water purification pipeline operation structures such as the opening and closing valve and the operation cylinder as the handle to the water outlet end of the inner pipe, keeping a certain distance from the operation handle of the faucet body, and using the unique shape of the cylindrical operation cylinder can be significantly distinguished from the existing operation handle, providing an obvious difference in the operation structure for the user, not easy to be confused, and facilitating the user's use.

[0020] 2. The opening of the upwardly recessed orientation port at the water outlet end of the faucet body not only does not prevent the universal use when the pull-out pipe is pulled out, but also can cooperate with the orientation part to position the circumferential direction of the opening and closing valve when the pull-out pipe retracts into the faucet body, ensuring that the opening and closing valve will not rotate synchronously with the operation cylinder when the operation cylinder operates after the pull-out pipe retracts, without the user having to fix the opening and closing valve or the inner pipe by hand additionally, and the operation is more convenient. At the same time, since the orientation port is opened on the water outlet end of the faucet body, when the entire water outlet pipe is pulled out for use, the opening and closing valve will no longer be oriented and can rotate synchronously with the operation cylinder, and it is not easy to accidentally close the opening and closing valve due to holding the operation cylinder by hand, facilitating use.

[0021] 3. One end of the inner tube is fixed by clamping it inside and outside through a connector and a sleeve and then limiting it with a relief groove, making disassembly and assembly more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a partial cross-sectional structural schematic diagram of this dual-purpose pull-out faucet.

[0023] Figure 2 is a cross-sectional structural schematic diagram at the water outlet end of this dual-purpose pull-out faucet.

[0024] Figure 3 is a cross-sectional structural schematic diagram at the water inlet end of this dual-purpose pull-out faucet.

[0025] Figure 4 is a cross-sectional structural schematic diagram at the control valve core of this dual-purpose pull-out faucet.

[0026] Figure 5 is a structural schematic diagram at the orientation port of this dual-purpose pull-out faucet.

[0027] In the figure, 1. Faucet body; 1a. Control valve core; 1b. Orientation port; 1c. Seat body; 1d. Pipe body; 1e. Connection hole; 2. Pull-out pipe; 2a. Outer tube; 2b. Ball head part; 2c. Movable sleeve; 2d. Through hole; 3. On-off valve; 3a. On-off part; 3b. Valve body; 3c. Static valve plate; 3d. Moving valve plate; 4. Operating cylinder; 4a. Connection part; 4b. Water passing hole; 4c. Shoulder; 5. Water passing gap; 6. Orientation part; 7. Gear sleeve; 8. Limit ring; 9. Snap ring; 10. Three-way pipe fitting; 10a. First water inlet end; 10b. Second water inlet end; 10c. Connection end; 10d. Relief groove; 11. Connector; 11a. Flange; 11b. Sleeve; 12. Inner tube; 13. Operating handle; 14. Counterweight; 15. Foamer; 16. Sealing ring; 17. Connection cylinder; 18. Spacer ring; 19. Positioning cylinder; 19a. Positioning part; 20. Spacer sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following are specific embodiments of the present invention in combination with the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0029] As Figure 1 shown, this dual-purpose pull-out faucet includes a faucet body 1 having a control valve core 1a and a pull-out pipe 2 disposed inside the faucet body 1. Among them, the structure of the faucet body 1 is the same as that of the existing kitchen faucet. The control valve core 1a is a mixing valve core for mixing cold water inlet and hot water inlet, and is installed inside the lower part of the faucet body 1. And an operating handle 13 is connected to the outside of the faucet body 1 for controlling the mixing ratio and opening degree of the control valve core 1a. The water outlet end of the faucet body 1 extends upward and then bends downward so that the outlet of the water outlet end is arranged downward, facilitating water outlet.

[0030] One end of the draw tube 2 passes downward through the faucet body 1 and is communicated with the water outlet of the control valve core 1a through a pipeline below the tabletop. The other end of the draw tube 2 extends out from the water outlet end of the faucet body 1. A counterweight 14 is sleeved and fixed on the part of the draw tube 2 passing through the faucet body 1 to apply a certain downward acting force to the draw tube 2, so that after the draw tube 2 is pulled out of the water outlet end of the faucet body 1, it has a tendency to retract into the faucet body 1.

[0031] As Figure 4 shown, the faucet body 1 includes a base body 1c at the bottom and a tubular body 1d rotatably connected to the upper side of the base body 1c. The bottom of the base body 1c passes downward through the mounting hole on the tabletop, and the base body 1c is fixed on the tabletop by a connecting member screwed or clamped to the lower end of the base body 1c. An annular spacer 20 is arranged inside the base body 1c. The lower end of the spacer 20 extends into the mounting hole of the tabletop. An annular groove one is formed inside the spacer 20, and an O-ring in a circular ring shape is arranged in the annular groove one. An annular groove two correspondingly exists inside the base body 1c, and an outer part of the O-ring extends into the annular groove two to realize axial fixation between the spacer 20 and the base body 1c. The arrangement of the spacer 20 enables the draw tube 2 to contact the inner wall of the spacer 20 during the drawing process, rather than directly rubbing against the tabletop, ensuring the smoothness of the drawing process of the draw tube 2 and the service life of the draw tube 2.

[0032] An annular spacer 18, a positioning cylinder 19 and a connecting cylinder 17 are arranged between the base body 1c and the tubular body 1d. The lower end of the connecting cylinder 17 extends into the base body 1c and is threadedly connected to the base body 1c. The upper end of the connecting cylinder 17 penetrates into the tubular body 1d. An annular limiting groove is formed on the outer wall of the upper end of the connecting cylinder 17. The spacer 18 is arranged in the limiting groove, and the outer side surface of the spacer 18 is in close contact with the inner wall of the tubular body 1d to prevent the tubular body 1d from shaking. The connecting cylinder 17 also has a protruding part on the outside. The positioning cylinder 19 is sleeved on the outside of the lower end of the connecting cylinder 17 and is axially limited between the protruding part and the base body 1c. The lower end of the positioning cylinder 19 abuts against the base body 1c. A protruding boss is arranged on the outside of the upper end of the positioning cylinder 19. A bayonet one is correspondingly formed and opened on the tubular body 1d, and the boss is clamped into the bayonet one to realize axial fixation between the tubular body 1d and the base body 1c.

[0033] As Figure 2As shown in the figure, an inner tube 12 is inserted into the draw tube 2. The draw tube 2 includes an outer tube 2a sleeved outside the inner tube 12, a spherical head part 2b in a cylindrical shape with a spherical surface on one end outside, and a movable sleeve 2c in a cylindrical shape. One end of the outer tube 2a is communicated with the water outlet of the control valve core 1a, and the other end is located inside the water outlet end of the faucet body 1. The end of the spherical head part 2b without the spherical surface is fixed at the port of the other end of the outer tube 2a. One end of the movable sleeve 2c is sleeved outside the spherical surface of the other end of the spherical head part 2b, and an annular sealing member and wear-resistant limiting member are arranged between the two, ensuring the sealing between the movable sleeve 2c and the spherical head part 2b while enabling the movable sleeve 2c to swing in all directions relative to the spherical head part 2b. The end of the inner tube 12 extends out of the outer tube 2a and the spherical head part 2b and is located inside the movable sleeve 2c. At the end of the inner tube 12, a first fixed cylinder and a second fixed cylinder both in a cylindrical shape are provided. The second fixed cylinder is sleeved outside the inner tube 12. One end of the first fixed cylinder penetrates into the inner tube 12, and the other end of the first fixed cylinder penetrates out of the inner tube 12 and the second fixed cylinder. The first fixed cylinder and the second fixed cylinder clamp the inner tube 12 from the inside and outside, making the three fixed to each other. The inner side of the movable sleeve 2c has a cylindrical inner cylinder. The upper end of the inner cylinder is sleeved outside the first fixed cylinder. An annular groove is recessed in the inner wall of the upper end of the inner cylinder. An annular sealing member is arranged in the groove. The outer side of the lower end of the first fixed cylinder has a protruding annular stop edge. The inner side of the sealing member extends out of the groove and abuts against the upper end surface of the stop edge, enabling the sealing member to achieve sealing while playing an axial limiting role for the first fixed cylinder and realizing the axial fixation between the first fixed cylinder and the inner cylinder. In this embodiment, for the convenience of production and assembly, the movable sleeve 2c is composed of a plurality of cylindrical structures connected in sequence by threads, and the inner cylinder is one of them. One side of the inner cylinder is open to form an opening.

[0034] An opening and closing valve 3 is threadedly connected to the inner side of the lower end of the inner cylinder. The opening and closing valve 3 is in a columnar shape and has an inlet communicated with the inner tube 12 at its upper end. A tubular opening and closing member 3a is rotatably arranged at the lower end of the opening and closing valve 3. The lower end of the opening and closing member 3a penetrates out of the lower end of the inner cylinder. The inner hole of the opening and closing member 3a is the outlet of the opening and closing valve 3. In this embodiment, the opening and closing valve 3 adopts a structure similar to a ceramic valve core, and a static valve plate 3c fixed to the valve body 3b and a dynamic valve plate 3d capable of circumferentially rotating relative to the valve body 3b are arranged therein. Eccentric positions on the static valve plate 3c and the dynamic valve plate 3d are both axially penetrated with notches. The notch on the static valve plate 3c is always communicated with the inlet of the opening and closing valve 3. The upper end of the opening and closing member 3a is inserted under the dynamic valve plate 3d to be circumferentially fixed to the dynamic valve plate 3d, and the notch on the dynamic valve plate 3d is always communicated with the inner hole of the opening and closing member 3a. When the opening and closing member 3a rotates circumferentially, it can drive the dynamic valve plate 3d to rotate relative to the static valve plate 3c and make the notches of the two communicate with each other.

[0035] The outer side of the opening and closing valve 3 is sleeved with and axially limited by a cylindrical operating cylinder 4, and the upper end of the operating cylinder 4 is sleeved on the outer side of the movable sleeve 2c of the drawing tube 2. A water passing gap 5 is formed between the outer side of the operating cylinder 4 and the outer side of the opening and closing valve 3. A through hole 2d communicating the outer tube 2a and the water passing gap 5 is axially penetrated in the movable sleeve 2c. The inner side of the operating cylinder 4 has a protruding annular connecting portion 4a, and the connecting portion 4a is circumferentially fixed to the opening and closing member 3a. A plurality of water passing holes 4b are axially penetrated in the connecting portion 4a, and the plurality of water passing holes 4b are circumferentially evenly distributed.

[0036] In this embodiment, an annular gear sleeve 7 is sleeved on the outer side of the opening and closing member 3a. The inner side of the gear sleeve 7 and the outer side of the opening and closing member 3a are engaged by a plurality of teeth. The connecting portion 4a is sleeved on the outer side of the gear sleeve 7 and the two are engaged by a plurality of teeth. A ring-shaped limiting ring 8 is threadedly connected to the outer side of the lower end of the opening and closing member 3a. An annular clamping ring 9 is also axially fixed to the outer side of the opening and closing valve 3. The inner side of the operating cylinder 4 has a protruding annular shoulder 4c. Both the connecting portion 4a and the shoulder 4c are located between the limiting ring 8 and the clamping ring 9. The connecting portion 4a can abut against the clamping ring 9, and the shoulder 4c can abut against the limiting ring 8; a bubbler is fixed to the lower end of the limiting ring 8.

[0037] As Figure 5 shown, one side of the end of the water outlet end of the faucet main body 1 has an upwardly recessed orientation port 1b. The movable sleeve 2c includes an annular orientation member 6. One side of the orientation member 6 protrudes and the protrusion can be snapped into the orientation port 1b. In this embodiment, the faucet main body 1 further includes an annular clamping member made of plastic material. A second clamping opening is axially penetrated in the side portion of the water outlet end of the pipe body 1d. The clamping member has a protruding block-shaped clamping portion. The clamping member is inserted into the water outlet end of the pipe body 1d and the clamping portion is snapped into the second clamping opening to realize the fixation between the clamping member and the pipe body 1d. The orientation port 1b is located at the lower end portion of the clamping member.

[0038] As Figure 3As shown, one end of the inner tube 12 is used to communicate with the water purifier. Specifically, the dual-purpose pull-out faucet further includes a three-way pipe fitting 10. The three-way pipe fitting 10 has a first water inlet end 10a, a second water inlet end 10b, and a connection end 10c. Among them, the second water inlet end 10b and the connection end 10c are distributed on opposite sides of the three-way pipe fitting 10, and the first water inlet end 10a is arranged vertically between the two end ports. The water outlet of the control valve core 1a is connected to the first water inlet end 10a with the port facing upward through a pipeline. One end of the outer tube 2a is threadedly connected to the connection end 10c. One end of the inner tube 12 extends out of the outer tube 2a and extends into the second water inlet end 10b, and a seal is formed between the outer side of this end of the inner tube 12 and the inner wall of the second water inlet end 10b. In this embodiment, the inner side of the end of the second water inlet end 10b has a recessed annular relief groove 10d, and one side of the relief groove 10d extends to the end face of the second water inlet end 10b. The side wall on the other side of the relief groove 10d is located between the port of the second water inlet end 10b and the first water inlet end 10a. A circular connection head 11 is fixed to the port of one end of the inner tube 12. The outer side of the connection head 11 has a protruding annular flange 11a. An annular sealing groove is recessed on the outer side of the flange 11a. An annular sealing ring 16 is arranged in the sealing groove. The outer side of the sealing ring 16 extends out of the sealing groove and abuts against the inner wall of the second water inlet end 10b, and when the sealing ring 16 moves towards the connection end 10c of the three-way pipe fitting 10, it can abut against the groove wall of the relief groove 10d. In this embodiment, a cylindrical sleeve 11b is sleeved on the outer side of one end of the inner tube 12. One end of the connection head 11 passes through the inner tube 12, and the other end of the connection head 11 passes through the sleeve 11b, and the inner tube 12 is tightly pressed between the sleeve 11b and the connection head 11.

[0039] When installing this dual-purpose pull-out faucet, the two inlets of the control valve core 1a are respectively connected to the cold water supply pipe and the hot water supply pipe through pipelines, and the second water inlet end 10b is connected to the existing water purifier under the kitchen countertop through a pipeline.

[0040] When using tap water, operate the operating handle 13 on the faucet body 1 to open the control valve core 1a. The tap water flows out from the water outlet of the control valve core 1a, passes through the gap between the outer tube 2a and the inner tube 12, and then flows out from the other end of the outer tube 2a, and successively passes through the inner hole of the movable sleeve 2c, the through hole 2d, the opening of the inner cylinder, and the water passing gap 5 for use.

[0041] When it is necessary to use purified water, the orienting member 6 remains snapped into the orienting port 1b to realize the circumferential positioning between the on-off valve 3 and the faucet body 1. The user can manually rotate the operating cylinder 4 circumferentially, and rely on the connecting portion 4a on the inner side of the operating cylinder 4 to drive the on-off member 3a to rotate circumferentially. The moving valve plate 3d rotates circumferentially relative to the static valve plate 3c, so that the notches of the two are opposite and communicate. The purified water is transported from the water purifier along the inner tube 12 to the on-off valve 3 and is sent out from the outlet of the on-off valve 3 for use.

[0042] When the water outlet pipe including the draw tube 2 and the inner tube 12 needs to be pulled out entirely for use, hold the operating cylinder 4 and pull it outwards. Since the operating cylinder 4 is axially limited outside the opening and closing valve 3, and the opening and closing valve 3 is fixed to both the draw tube 2 and the inner tube 12 at the same time, the draw tube 2 and the inner tube 12 can be pulled out simultaneously for use. Control the operating handle 13 of the faucet body 1 or the operating cylinder 4 respectively as needed to realize the use of tap water or purified water. Here, if the draw tube 2 is pulled out first and then the purified water is turned on, one hand needs to hold the outside of the draw tube 2, and the other hand rotates the operating cylinder 4 to prevent the opening and closing valve 3 and the operating cylinder 4 from rotating synchronously.

[0043] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A dual-purpose pull-out faucet, comprising a faucet body (1) having a control valve core (1a) and a pull-out tube (2) passing through the faucet body (1), wherein an inner tube (12) is passed through the pull-out tube (2), characterized in that: The dual-use pull-out faucet further comprises a three-way pipe fitting (10), the three-way pipe fitting (10) having a first water inlet end (10a), a second water inlet end (10b) and a connecting end (10c), the water outlet of the control valve core (1a) being connected to the first water inlet end (10a), one end of the pull-out pipe (2) being connected to the connecting end (10c), one end of the inner pipe (12) extending out of the port of the pull-out pipe (2) and extending into the second water inlet end (10b), a seal being formed between the outer side of the end of the inner pipe (12) and the inner wall of the second water inlet end (10b), and an on-off valve (3) being fixed to the other end of the inner pipe (12) and the on-off valve (3) being connected to the inner wall of the second water inlet end (10b). The other end of the pull-out tube (2) is fixed, and the inner tube (12) is connected to the inlet of the opening and closing valve (3). The outer side of the opening and closing valve (3) is sleeved with a cylindrical operating cylinder (4) and axially limited, and one end of the operating cylinder (4) is sleeved on the outer side of the pull-out tube (2). A water gap (5) connected to the inside of the pull-out tube (2) is formed between the operating cylinder (4) and the outer side of the opening and closing valve (3). The opening and closing valve (3) has an opening and closing member (3a) that can control the opening and closing of the opening and closing valve (3) when it rotates circumferentially. The inner side of the operating cylinder (4) has a protruding connecting portion (4a), and the connecting portion (4a) is circumferentially fixed to the opening and closing member (3a).

2. A dual-use pull-out faucet according to claim 1, characterized in that: One side of the water outlet end of the faucet body (1) is provided with an upwardly concave directional opening (1b), and a directional member (6) capable of being inserted into the directional opening (1b) is fixed on the on-off valve (3).

3. A dual-use pull-out faucet according to claim 1 or 2, characterized in that: The opening and closing valve (3) is columnar, and has an inlet at its upper end that is connected to the inner tube (12). The opening and closing member (3a) extends from the lower end of the opening and closing valve (3). The opening and closing member (3a) is tubular, and the inner hole of the opening and closing member (3a) is the outlet of the opening and closing valve (3).

4. A dual-use pull-out faucet according to claim 3, characterized in that: A static valve plate and a dynamic valve plate are arranged in the opening and closing valve (3); notches are provided at eccentric positions on the static valve plate and the dynamic valve plate along the axial direction of the opening and closing valve (3); the notch of the static valve plate is always connected to the inlet of the opening and closing valve (3); the upper end of the opening and closing member (3a) is circumferentially fixed to the dynamic valve plate and the notch on the dynamic valve plate is always connected to the inner hole of the opening and closing member (3a); when the opening and closing member (3a) rotates circumferentially, it can drive the dynamic valve plate to rotate relative to the static valve plate and connect the notches of the two.

5. A dual-use pull-out faucet according to claim 1 or 2, characterized in that: The connecting portion (4a) is in the form of a circular ring, and a water hole (4b) is provided in the connecting portion (4a) along the axial direction.

6. A dual-use pull-out faucet according to claim 1 or 2, characterized in that: The pull-out tube (2) comprises an outer tube (2a) sleeved on the outside of the inner tube (12), a cylindrical ball head component (2b) with a spherical surface on the outside, and a cylindrical movable sleeve (2c); one end of the outer tube (2a) is connected to the water outlet of the control valve core (1a), and the other end is located inside the water outlet end of the faucet body (1); the ball head component (2b) is fixed to the port at the other end of the outer tube (2a); one end of the movable sleeve (2c) is sleeved on the outside of the spherical surface of the ball head component (2b) and the movable sleeve (2c) can swing relative to the ball head component (2b); the other end of the movable sleeve (2c) is sleeved on the outside of the on-off valve (3) and is fixed to the on-off valve (3); a through hole (2d) is provided in the movable sleeve (2c) to connect the outer tube (2a) and the water gap (5).

7. A dual-use pull-out faucet according to claim 1 or 2, characterized in that: An annular limiting ring (8) is fixed to the outer side of the other end of the opening and closing valve (3) relative to the inner tube (12), and an annular clamping ring (9) is also axially fixed to the outer side of the opening and closing valve (3). The inner side of the operating cylinder (4) has a protruding annular shoulder (4c), and the connecting portion (4a) and the shoulder (4c) are both located between the limiting ring (8) and the clamping ring (9). The connecting portion (4a) can abut against the clamping ring (9), and the shoulder (4c) can abut against the limiting ring (8).

8. A dual-purpose pull-out faucet according to claim 1 or 2, characterized in that: The inner side of the end of the second water inlet end (10b) is provided with a recessed annular relief groove (10d), and one side of the relief groove (10d) extends to the end surface of the second water inlet end (10b), and the side wall of the other side of the relief groove (10d) is located between the port of the second water inlet end (10b) and the first water inlet end (10a). A connector (11) is fixed to the port at one end of the inner tube (12), and an annular sealing ring (16) is fixed to the outer side of the connector (11). The outer side of the sealing ring (16) abuts against the inner wall of the second water inlet end (10b) to form a seal, and the sealing ring (16) can abut against the groove wall of the relief groove (10d) when moving toward the connecting end (10c) of the three-way pipe fitting (10).

9. The dual-purpose pull-out faucet according to claim 8, characterized in that: A cylindrical sleeve (11b) is sleeved on the outer side of one end of the inner tube (12); one end of the connector (11) is inserted into the inner tube (12); the other end of the connector (11) passes through the sleeve (11b); and the inner tube (12) is tightly pressed between the sleeve (11b) and the connector (11).

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