Three-function drawing head

Abstract

The utility model discloses a three-function drawing head which comprises a body provided with a water inlet channel and a first water distribution cavity, the body is further provided with a first inlet and a second inlet which can be communicated with the first water distribution cavity, a first switching mechanism is arranged in the first water distribution cavity, and the first switching mechanism can enable water to pass through the first inlet or the second inlet. The second inlet can be communicated with the flaky water outlet module; the water dispenser further comprises a second water distribution cavity capable of being communicated with the first inlet, the body is further provided with a third inlet and a fourth inlet which can be communicated with the second water distribution cavity, a second switching mechanism is arranged in the second water distribution cavity, the second switching mechanism can enable water to pass through the third inlet or the fourth inlet, the third inlet can be communicated with the water outlet hole, and the fourth inlet can be communicated with the water outlet hole. The fourth inlet can be communicated with the clear flowing water outlet module, and the drawing head has an excellent water spray effect and can be applied to various occasions.

Description

Technical Field

[0001] The utility model relates to a three - function pull - out head. Background Art

[0002] At present, the water sprays of multi - function pull - out heads on the market are basically a combination of shower water, sparkling water and other water sprays; however, the anti - splash effect of sparkling water is limited and there will be a suction noise; at the same time, for consumers to clean some fruit trays or large areas simply, the impact force of shower water is strong and it is easy to splash, while the cleaning range of sparkling water is small and the impact force is insufficient. Obviously, these two kinds of water sprays are not particularly suitable for the usage scenarios of consumers. Summary of the Invention

[0003] In order to solve the above - mentioned technical problems, the purpose of the utility model is to provide a three - function pull - out head.

[0004] The utility model is realized through the following technical solutions:

[0005] A three - function pull - out head includes a body having a water inlet channel and a first water distribution cavity. The body is further provided with a first inlet and a second inlet that can communicate with the first water distribution cavity. A first switching mechanism is arranged in the first water distribution cavity, and the first switching mechanism can make the first inlet or the second inlet conduct water. The second inlet can communicate with a sheet - shaped water outlet module. It further includes a second water distribution cavity that can communicate with the first inlet. The body is also provided with a third inlet and a fourth inlet that can communicate with the second water distribution cavity. A second switching mechanism is arranged in the second water distribution cavity, and the second switching mechanism can make the third inlet or the fourth inlet conduct water. The third inlet can communicate with a water outlet hole, and the fourth inlet can communicate with a clear - water outlet module.

[0006] In an embodiment of the utility model, it further includes a lower cover at the water outlet end of the body. The water outlet hole is arranged on the lower cover, and the sheet - shaped water outlet module and the clear - water outlet module can be connected to the body through the lower cover.

[0007] In an embodiment of the utility model, the sheet - shaped water outlet module includes a hollow second housing. A second buffer area that can communicate with its water inlet end is arranged in the second housing. A water outlet and a chamber for rectification are also arranged in the second housing and are in communication. The chamber is located between the second buffer area and the water outlet, and the chamber is bowl - shaped; the edge of the water inlet end and / or the water outlet end of the water outlet is an arc edge.

[0008] In the embodiment of the present utility model, the cross-sections of the water inlet end and the water outlet end of the water outlet are elliptical, the dimension of the water outlet gradually increases along the water outlet direction, the maximum diameter of the chamber is greater than the major axis dimension of the water inlet end of the water outlet, the water inlet end of the water outlet is connected to the middle part of the chamber along the water flow direction, the chamber can be coaxially arranged with the water outlet, a second buffer step is further arranged in the second shell, the second buffer step is located on the outer peripheral side of the opening of the water inlet end of the chamber, the cross-section of the second buffer area is larger than that of the water inlet end of the chamber, and the second buffer area can be coaxially arranged with the chamber.

[0009] In the embodiment of the present utility model, a second rectifying fin is arranged at the water inlet end of the second buffer area, the water flow entering the second shell can flow into the second buffer area through the second rectifying fin, a second annular step surface is arranged in the second shell on the outer periphery above the second buffer area, the second rectifying fin is erected on the second annular step surface, at least one second rectifying net is further included, the second rectifying net is arranged above the second rectifying fin, a second groove is arranged on the inner peripheral wall of the second shell, the second groove can be located above the second annular step surface, a second convex block is arranged on the outer periphery of the second rectifying net, and when the second rectifying net is installed in the second shell, the second convex block can be in fit connection with the second groove.

[0010] In the embodiment of the present utility model, the clear water outlet module includes a hollow first shell, a first buffer area for water flow is arranged in the first shell, a first buffer step is arranged in the first shell, the first buffer step is located on the periphery of the water outlet of the first shell, and the cross-sectional area of the first buffer area is larger than that of the water outlet of the first shell; the caliber of the water outlet of the first shell gradually increases along the water outlet direction, so that the water inlet end of the water outlet of the first shell forms a water outlet sharp angle, and a water outlet inclined surface is formed on the peripheral wall of the water outlet of the first shell.

[0011] In the embodiment of the present utility model, a first rectifying fin is further arranged in the first shell, the first rectifying fin is located at the water inlet end of the first buffer area, a first annular step surface is arranged in the first shell at the water inlet end of the first buffer area, and the first rectifying fin is received above the first annular step surface; at least one first rectifying net is further included, the first rectifying net is arranged above the first rectifying fin, a first groove is arranged on the inner peripheral wall of the first shell, a first convex block is arranged on the outer periphery of the first rectifying net, and when the first rectifying net is installed in the first shell, the first convex block can be in fit connection with the first groove; a first fluid distributor is further included, the first fluid distributor covers the water inlet end of the first shell, a plurality of diversion openings are arranged on the first fluid distributor, water flow can enter the inner periphery of the first shell through the diversion openings, and a first positioning block is further arranged on the outer periphery of the first fluid distributor, and the first positioning block can be in fit connection with the first groove.

[0012] In the embodiment of the present utility model, the first switching mechanism includes a first bushing disposed in the first water distribution cavity. A first moving shaft is disposed in the first bushing, and a first sealing ring is disposed on the first moving shaft. The first sealing ring can be cooperatively connected with the first inlet and the second inlet. A spring is further disposed between one end of the first moving shaft and the body. When there is no water flow, the spring can keep the first sealing ring in sealed connection with the second inlet. The other end of the first moving shaft is connected to a button disposed on the body.

[0013] In the embodiment of the present utility model, the second switching mechanism includes a second bushing disposed in the second water distribution cavity. A second moving shaft is disposed in the second bushing, and a second sealing ring is disposed at one end of the second moving shaft. The second sealing ring can be cooperatively connected with the third inlet and the fourth inlet.

[0014] In the embodiment of the present utility model, the other end of the second moving shaft can be connected to one end of a button. The button is disposed on the body, and the middle of the button is hinged to the body. Pressing one end or the other end of the button can control the movement of the second moving shaft in the second water distribution cavity.

[0015] The three-functional pull-out head of the present utility model has the following beneficial effects: It is suitable for large-area cleaning, the water flow is gentle, splashing of water is avoided, and at the same time, it ensures that no water splashes during flushing, providing a good cleaning experience for users; it can also adapt to large-area cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is an exploded view of the present utility model.

[0018] Figure 2 It is a schematic diagram of the first state of the present utility model.

[0019] Figure 3 It is a schematic diagram of the second state of the present utility model.

[0020] Figure 4 It is a schematic diagram of the third state of the present utility model Figure 1 .

[0021] Figure 5 It is a schematic diagram of the third state of the present utility model Figure 2 .

[0022] Figure 6It is a schematic diagram of the second switching mechanism in the present utility model.

[0023] Figure 7 It is a cross-sectional view of the clear water outlet module in the present utility model.

[0024] Figure 8 It is an exploded view of the clear water outlet module in the present utility model.

[0025] Figure 9 It is a cross-sectional view of the sheet-like water outlet module in the present utility model.

[0026] Figure 10 It is an exploded view of the sheet-like water outlet module in the present utility model.

[0027] Figure 11 It is a schematic diagram of the second housing in the present utility model Figure 1 .

[0028] Figure 12 It is a schematic diagram of the second housing in the present utility model Figure 2 .

[0029] Figure 13 It is a bottom view of the present utility model. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0033] In the present utility model, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "connected to", "fixed" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0035] Referring to the accompanying drawings of the specification, a three-functional pull head includes a body 10 having a water inlet passage 11 and a first water distribution chamber 12. Water flows from the water inlet end of the body into the water inlet passage and then leads to the first water distribution chamber. The body is further provided with a first inlet 13 and a second inlet 14 that can communicate with the first water distribution chamber. A first switching mechanism 20 is arranged in the first water distribution chamber. The first switching mechanism can make the first inlet or the second inlet pass water, that is, the first switching mechanism can control the flow direction of the water flow in the first water distribution chamber. The second inlet can communicate with a sheet water outlet module 200. In the default state, the first inlet is open and the second inlet is closed. Only by starting the first switching mechanism in the default state can the sheet water outlet module discharge water. It further includes a second water distribution chamber 15 that can communicate with the first inlet. In the default state, water flows from the first water distribution chamber to the second water distribution chamber. The body is further provided with a third inlet 16 and a fourth inlet 17 that can communicate with the second water distribution chamber. A second switching mechanism 30 is arranged in the second water distribution chamber. The second switching mechanism can make the third inlet or the fourth inlet pass water, that is, the second switching mechanism can control the flow direction of the water flow in the second water distribution chamber. The third inlet can communicate with a water outlet hole 41, and the water outlet hole can be a sprinkler water outlet hole, which is the default water spray. The fourth inlet can communicate with a clean water outlet module 100. When the water outlet hole discharges water, the second switching mechanism is controlled to switch to the clean water outlet module to discharge water. Whether the water outlet hole or the clean water outlet module discharges water, as long as the first switching mechanism is controlled, it can be directly switched to the sheet water outlet module to discharge water.

[0036] Furthermore, it further includes a lower cover 40 at the water outlet end of the body. The water outlet hole is arranged on the lower cover. The sheet water outlet module and the clean water outlet module can be connected to the body through the lower cover.

[0037] Among them: The sheet water outlet module 200 includes a hollow second housing 210. Water can flow through the hollow area inside the second housing. A second buffer zone 211 that can communicate with its water inlet end is arranged in the second housing. A water outlet 212 and a chamber 213 for rectifying are also arranged in the second housing and are connected. The chamber is located between the second buffer zone and the water outlet, and the chamber is bowl-shaped. The edge of the water inlet end and / or the water outlet end of the water outlet is an arc edge 217. In one use, the water outlet is a flat-shaped opening, and its size gradually increases and expands outward along the water flow direction.

[0038] Preferably, the cross-sections of the water inlet end and the water outlet end of the water outlet are elliptical, and the size of the water outlet gradually increases along the water outlet direction. Referring to the accompanying drawings of the specification, the dotted line is the water outlet end of the water outlet. The arc edge enables more water flow ratio for the outermost water spray of the sheet water, and at the same time, it will not generate sharp corners to cause excessive extrusion of the outer water flow, avoiding the outward diffusion and splashing of the sheet water.

[0039] Furthermore, the maximum diameter of the chamber is greater than the major axis dimension of the water inlet end of the water outlet, and the major axis dimension of the water outlet channel of the water outlet is greater than the maximum diameter of the chamber, and even greater than the major diameter of the second buffer zone. The water inlet end of the water outlet is connected to the middle part of the chamber along the water flow direction, and the chamber can be coaxially arranged with the water outlet. A second buffer step 214 is further provided in the second housing. The second buffer step is located on the outer peripheral side of the opening at the water inlet end of the chamber. The cross section of the second buffer zone is larger than the cross section of the water inlet end of the chamber, and the second buffer zone can be coaxially arranged with the chamber.

[0040] Still further, a second rectifying fin 220 is provided at the water inlet end of the second buffer zone, and the water flow entering the second housing can flow into the second buffer zone through the second rectifying fin. A second annular step surface 215 is provided in the second housing on the outer periphery above the second buffer zone, and the second rectifying fin is mounted on the second annular step surface.

[0041] Preferably, at least one second rectifying net 230 is further included. The second rectifying net is provided above the second rectifying fin, and two can be arranged in a stacked manner.

[0042] Furthermore, a second groove 216 is provided on the inner peripheral wall of the second housing. The second groove can be located above the second annular step surface. A second convex block 231 is provided on the outer periphery of the second rectifying net. When the second rectifying net is installed in the second housing, the second convex block can be connected in cooperation with the second groove, and at the same time, the radial rotation of the rectifying net can be avoided.

[0043] More specifically, for the sheet-shaped water outlet module: The water flow enters the second housing. After passing through the second rectifying net and the second rectifying fin, the water flow enters the second buffer zone, thereby forming a laminar flow state (making the water film of the sheet-shaped water longer) and then flowing out from the water outlet. The water flow forms sheet-shaped water from the rectifying chamber (i.e., the chamber) of the water outlet chamber and the water outlet. The second rectifying fin is fixed on the second annular step surface. The second rectifying net has a plurality of water outlet holes, and the water outlet holes are arranged in a hexagonal pattern. The second rectifying fin is a stainless steel filter mesh. The second housing has a second annular step surface, a second buffer step, a rectifying chamber, and a water outlet. The water outlet gradually expands outward along the water flow direction. The second annular step surface and the second buffer step are used to limit the height of the second rectifying fin to form the second buffer zone. The cross section of the rectifying chamber is a regular geometric figure such as a circle or an ellipse. The water outlet is a flat-shaped opening, and both ends of the water outlet are arc edges (the arc edges enable more water flow ratio for the outermost water flowers of the sheet-shaped water, avoiding the outward diffusion of the sheet-shaped water). The gradual outward expansion of the water outlet can well avoid affecting the water flow of the water outlet.

[0044] Among them: The clear water outlet module includes a hollow first housing 110. Inside the first housing, there is a first buffer area 111 for water flow. Inside the first housing, there is a first buffer step 112, which is located on the periphery of the water outlet 113 of the first housing. The cross-sectional area of the first buffer area is larger than that of the water outlet of the first housing, and the water outlet of the first housing and the first buffer area are coaxially arranged. The diameter of the water outlet of the first housing gradually increases along the water outlet direction, so that the water inlet end of the water outlet of the first housing forms a water outlet sharp angle 114. The peripheral wall of the water outlet of the first housing forms a water outlet inclined surface 115, and this sharp angle is an acute angle.

[0045] Preferably, a first rectifying fin 120 is further provided inside the first housing, and the first rectifying fin is located at the water inlet end of the first buffer area. Inside the first housing, there is a first annular step surface 116, which is located at the water inlet end of the first buffer area, and the first rectifying fin is received above the first annular step surface.

[0046] Furthermore, there is at least one first rectifying net 130, and the first rectifying net is arranged above the first rectifying fin. If there are multiple first rectifying nets, they are stacked. There is a first groove 117 on the inner peripheral wall of the first housing. There is a first convex block 131 on the outer periphery of the first rectifying net. When the first rectifying net is installed inside the first housing, the first convex block can be connected in cooperation with the first groove.

[0047] Still further, there is a first fluid splitter 140, which covers the water inlet end of the first housing. There are multiple diversion openings 141 on the first fluid splitter, and water flow can enter the inner periphery of the first housing through the diversion openings. There is also a first positioning block 142 on the outer periphery of the first fluid splitter, and the first positioning block can be connected in cooperation with the first groove.

[0048] Specifically for the clear water outlet module: After the water flow passes through the first water channel, the turbulent flow passes through the first housing, enters the first rectifying net and the first rectifying fins along the water flow direction, passes through the first buffer area, and thus forms a laminar flow state. Then it flows out from the water outlet of the first housing to form clear water. After rectification and buffering, the impact force of the clear water decreases, and there will be no splashing of water droplets. At the same time, it is different from the soft and weak state of bubble water, and has a certain impact force. The water outlet sharp angle and the water outlet inclined plane can effectively avoid the adhesion of the water flow, so that the water flow will not adhere to the side wall of the water outlet, affecting the water outlet form of the clear water. The first rectifying net and the first rectifying fins are fixed on the first annular step surface inside the first housing. There is a first buffer area between the first rectifying fin and the water outlet of the first housing. The first fluid splitter has a diversion port. In use, the diversion ports are annularly distributed on the outer peripheral side of the first fluid splitter. A water blocking part 143 is formed inside the circumference of the diversion port. The water blocking part is used to slow down the speed of the water flow entering the first housing. The first rectifying net has a plurality of water outlet holes, and the water outlet holes are arranged in a hexagonal pattern. The first rectifying fin is a stainless steel filter screen or a nylon filter screen and also has a plurality of water outlet holes. The first annular step surface and the first buffer step are used to limit the height of the first rectifying fin inside the first housing to form the first buffer area.

[0049] Further, the first switching mechanism 20 includes a first bushing 21 disposed in the first water distribution cavity. A first moving shaft 22 is disposed inside the first bushing. A first sealing ring 23 is disposed on the first moving shaft. The first sealing ring can be connected in cooperation with the first inlet and the second inlet. A spring 24 is further disposed between one end of the first moving shaft and the body. When there is no water flow, the spring can keep the first sealing ring in sealed connection with the second inlet. In this way, after closing the water and then opening the water again, the water flow can flow from the first water distribution cavity to the second water distribution cavity. The other end of the first moving shaft is connected to a button 51 disposed on the body.

[0050] Still further, the second switching mechanism 30 includes a second bushing 31 disposed in the second water distribution cavity. A second moving shaft 32 is disposed inside the second bushing. One end of the second moving shaft is provided with a second sealing ring 33. The second sealing ring can be connected in cooperation with the third inlet and the fourth inlet. The other end of the second moving shaft can be connected to one end of a button 52. The button is disposed on the body. The middle part of the button is hinged to the body. Pressing one end or the other end of the button can control the movement of the second moving shaft in the second water distribution cavity. The second switching mechanism can also have another spring. This spring can keep the second sealing ring in sealed connection with the fourth inlet, so that every time the water is closed and then opened again, water can flow out from the water outlet holes. This is the most commonly used water outlet mode of the shower head.

[0051] More specifically for the present invention: State 1: The water flow passes through the first water distribution cavity and the second water distribution cavity from the water inlet end of the body and leads to the water outlet holes to spray out shower water. Refer to the accompanying drawings of the specification. Figure 2。State 2: Water flows from the water inlet end of the body through the first water distribution cavity. Press the button, the second sealing ring seals the third inlet, and the fourth inlet is opened. The water flows through the inside of the first bushing to the clean water outlet module. Refer to the attached drawings of the specification. Figure 3 。State 3: Water flows from the water inlet end of the body through the first water distribution cavity. Press the button key, the first sealing ring seals the first inlet, and the inlet is opened. The water flows through the inside of the second bushing to the sheet water outlet module. Refer to the attached drawings of the specification. Figure 4 、 Figure 5 ; When the key is released, the first sealing ring and the first moving shaft reset under the action of the spring, the second inlet is blocked, and the first inlet is opened. The water flows from the first water distribution cavity to the second water distribution cavity. The mechanisms of the two switching mechanisms are basically the same, both having bushings and moving shafts. Each bushing is in sealing cooperation with the inner peripheral wall of the corresponding water distribution cavity. There is also sealing cooperation between the moving shaft and the bushing. The bushing is used to limit the moving shaft, and the inside of the bushing can be used for water passage; the movement of the moving shaft can open or close the corresponding inlet. The two outlet modules are installed on the main body and fixed by the lower cover.

[0052] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be within the scope of the inventive concept described herein, modified by the above teachings or the technology or knowledge in related fields. And any modifications and changes made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A three-function pull-out head, comprising a body having a water inlet and a first water diversion chamber, characterized in that: The main body is also provided with a first inlet and a second inlet which can be communicated with the first water diversion chamber, a first switching mechanism is arranged in the first water diversion chamber, the first switching mechanism can make water pass through the first inlet or the second inlet, and the second inlet can be connected with the sheet water outlet module; it also includes a second water diversion chamber which can be connected with the first inlet, the main body is also provided with a third inlet and a fourth inlet which can be communicated with the second water diversion chamber, a second switching mechanism is arranged in the second water diversion chamber, the second switching mechanism can make water pass through the third inlet or the fourth inlet, the third inlet can be connected with the water outlet hole, and the fourth inlet can be connected with the clear water outlet module.

2. A three-function pull-out head according to claim 1, characterized in that: It also includes a lower cover located at the water outlet end of the body, the water outlet hole is arranged on the lower cover, and the sheet water outlet module and the clear water outlet module can be connected to the body through the lower cover.

3. A three-function pull-out head according to any one of claims 1 or 2, characterized in that: The sheet-shaped water outlet module includes a hollow second shell, a second buffer zone connected to its water inlet end is arranged in the second shell, a connected water outlet and a chamber for rectification are also arranged in the second shell, the chamber is located between the second buffer zone and the water outlet, and the chamber is bowl-shaped; the edges of the water inlet end and / or the water outlet end of the water outlet are arc edges.

4. A three-function pull-out head according to claim 3, characterized in that: The cross-sections of the water inlet end and the water outlet end of the water outlet are elliptical, the size of the water outlet along the water outlet direction gradually increases, the maximum diameter of the chamber is larger than the major axis size of the water inlet end of the water outlet, the water inlet end of the water outlet is connected to the middle part of the chamber along the water flow direction, the chamber can be coaxially arranged with the water outlet, and a second buffer step is also arranged in the second shell, the second buffer step is located on the outer peripheral side of the opening of the water inlet end of the chamber, the cross-section of the second buffer zone is larger than the cross-section of the water inlet end of the chamber, and the second buffer zone can be coaxially arranged with the chamber.

5. A three-function pull-out head according to claim 4, characterized in that: A second rectifying piece is provided at the water inlet end of the second buffer zone, and the water flow entering the second shell can flow into the second buffer zone through the second rectifying piece. A second annular step surface is provided in the second shell located on the outer periphery above the second buffer zone, and the second rectifying piece is mounted on the second annular step surface. The second rectifying piece also includes at least one second rectifying net, which is arranged above the second rectifying piece. A second groove is provided on the inner peripheral wall of the second shell, and the second groove can be located above the second annular step surface. A second protrusion is provided on the outer periphery of the second rectifying net, and when the second rectifying net is installed in the second shell, the second protrusion can be matched and connected with the second groove.

6. A three-function pull-out head according to any one of claims 1, 2, 4 or 5, characterized in that: The clear water outlet module includes a hollow first shell, a first buffer zone for water flow is arranged in the first shell, a first buffer step is arranged in the first shell, the first buffer step is located on the peripheral side of the water outlet of the first shell, the cross-sectional area of ​​the first buffer zone is larger than the cross-sectional area of ​​the water outlet of the first shell; the diameter of the water outlet of the first shell gradually increases along the water outlet direction so that the water inlet end of the water outlet of the first shell forms a water outlet sharp corner, and the peripheral wall of the water outlet of the first shell forms a water outlet inclined surface.

7. A three-function pull-out head according to claim 6, characterized in that: The first shell is also provided with a first rectifying piece, the first rectifying piece is located at the water inlet end of the first buffer zone, the first shell is provided with a first annular step surface, the first annular step surface is located at the water inlet end of the first buffer zone, and the first rectifying piece is supported above the first annular step surface; it also includes at least one first rectifying net, the first rectifying net is arranged above the first rectifying piece, the inner peripheral wall of the first shell is provided with a first groove, the outer periphery of the first rectifying net is provided with a first protrusion, when the first rectifying net is installed in the first shell, the first protrusion can be matched and connected with the first groove; it also includes a first flow divider, the first flow divider cover is at the water inlet end of the first shell, a plurality of flow dividers are provided on the first flow divider, water flow can enter the inner periphery of the first shell through the flow divider, and a first positioning block is also provided on the outer periphery of the first flow divider, and the first positioning block can be matched and connected with the first groove.

8. A three-function pull-out head according to any one of claims 1, 2, 4, 5 or 7, characterized in that: The first switching mechanism includes a first bushing arranged in a first water diversion chamber, a first movable shaft is arranged in the first bushing, a first sealing ring is arranged on the first movable shaft, the first sealing ring can be matched and connected with the first inlet and the second inlet, a spring is also arranged between one end of the first movable shaft and the main body, the spring can keep the first sealing ring and the second inlet sealed when there is no water flow, and the other end of the first movable shaft is connected to a button arranged on the main body.

9. A three-function pull-out head according to claim 8, characterized in that: The second switching mechanism includes a second bushing arranged in the second water diversion chamber, a second movable shaft is arranged in the second bushing, a second sealing ring is arranged at one end of the second movable shaft, and the second sealing ring can be matched and connected with the third inlet and the fourth inlet.

10. A three-function pull-out head according to claim 9, characterized in that: The other end of the second movable shaft can be connected to one end of a button, and the button is arranged on the body. The middle part of the button is hinged to the body. Pressing one end or the other end of the button can control the movement of the second movable shaft in the second water diversion chamber.

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