A rotating nozzle

Abstract

The present invention belongs to the technical field of rotary sprinklers, and specifically refers to a rotary sprinkler, including a rotating shaft, a rotating head, a shell and a connecting nut. A damping ring is provided in the middle of the rotating shaft, an oil seal is provided on the rotating shaft, an inner cavity of the shell forms an oil storage chamber between two oil seals, and the outer wall of the shell is evenly distributed with straightening fins along its circumference. The straightening fins and the shell are an integral structure, and an oil filling hole is provided on the outer wall of the shell, and a plug is connected to the oil filling hole. The present invention directly arranges the straightening fins on the shell, eliminating the straightening device structure, and the straightening fins and the shell are an integral structure and cannot be disassembled, so there is no need to assemble the straightening fins, which effectively simplifies the number of parts and improves assembly efficiency; at the same time, the present invention directly opens an oil filling hole on the shell, which is convenient for filling or replacing the damping oil, which not only reduces the difficulty of assembly operation, but also does not require disassembly for later maintenance.

Description

Technical field:

[0001] The invention belongs to the technical field of rotary sprinklers, in particular to a rotary sprinkler. Background technology:

[0002] The pipe cleaning nozzle is a high-pressure water jet cleaning product developed and manufactured for the cleaning of sewers and other industrial pipes. It has been transformed from the original single high-pressure water flushing to a structure that can now self-rotate under the reaction force of water pressure.

[0003] The self-rotating sprinkler disclosed in the existing Chinese utility model patent (authorization announcement number: CN207325107U) includes: a self-rotating sprinkler, comprising a hollow rotating shaft, a rotating head connected to the head of the rotating shaft, a shell sleeved on the outer periphery of the rotating shaft and a connecting nut screwed on the tail of the shell, a pressure water channel is formed between the connecting nut, the rotating shaft and the inner hole of the rotating head; a damping ring body is arranged in the middle of the rotating shaft, a damping slit is formed between the damping ring body and the inner cavity wall of the shell, two bearings are matched between the rotating shaft and the shell, and the two bearings are located on both sides of the damping ring body; an oil seal is arranged on the outer side of the bearing, and the inner cavity of the shell is filled with damping oil between the two oil seals; a centralizer is sleeved on the outer periphery of the shell, the centralizer has radially extending fins, and the fins are provided with recovery holes.

[0004] However, the above structure has the following defects: First, since a centralizer needs to be mounted on the outer shell and the outer shell is wrapped in the centralizer, the damping oil can only be injected all at once when the above structure is assembled, and the assembly operation is cumbersome and difficult; second, the addition and replacement of the damping oil requires the disassembly of the rotating nozzle, and the subsequent maintenance is extremely troublesome; third, the existing centralizers on the market all have detachable fins, that is, the fins need to be assembled to the corresponding positions of the centralizer in sequence during assembly. Therefore, during the assembly process, there will be a lot of parts and the assembly efficiency is low. Summary of the invention:

[0005] The purpose of the present invention is to provide a rotary spray head which is convenient for filling and replacing damping oil, effectively reduces the number of parts and simplifies the assembly operation steps.

[0006] The present invention is achieved in that:

[0007] A rotary spray head comprises a hollow rotary shaft, a rotary head connected to the front end of the rotary shaft, a shell sleeved on the outer circumference of the rotary shaft, and a connecting nut fixed to the rear end of the shell. A damping ring is arranged in the middle of the rotary shaft, and oil seals are arranged on the rotary shaft on both sides of the damping ring. An oil storage chamber filled with damping oil is formed between the two oil seals in the inner cavity of the shell. A plurality of straightening fins are evenly distributed on the outer wall surface of the shell along its circumference and arranged along the radial direction of the shell. The straightening fins and the shell are an integrated structure. An oil filling hole connected to the oil storage chamber is opened on the outer wall surface of the shell, and a plug is detachably connected to the oil filling hole.

[0008] In the above-mentioned rotary spray head, the rotating shaft located in the oil storage chamber and on both sides of the damping ring body is rotatably connected to the outer shell through bearings, and there are oil filling gaps between the two side surfaces of the damping ring body and the corresponding bearings. The inner port of the oil filling hole is connected to one of the oil filling gaps, and the damping ring body is provided with an oil through hole that passes through the front and rear sides of the damping ring body.

[0009] In the above-mentioned rotary spray head, a spiral groove is provided on the outer peripheral surface of the damping ring body, and the inner port of the oil filling hole is located at the front end or the rear end of the spiral groove. The depth of the spiral groove gradually decreases in the direction away from the oil filling hole, and the damping ring body and the spiral groove are driven to rotate by the rotating shaft to guide the damping oil to flow from the front end or the rear end of the spiral groove to the rear end or the front end.

[0010] In the above-mentioned rotary spray head, a sealing groove connected to the inner hole of the rotating shaft is provided on the rear end face of the rotating shaft, a sealing ring seat 1 with an inner hole is circumferentially fixed in the sealing groove, a mounting groove connected to the inner hole of the connecting nut is provided on the front end face of the connecting nut, a sealing ring seat 2 with an inner hole is circumferentially fixed in the mounting groove, the rear end face of the sealing ring seat 1 and the front end face of the sealing ring seat 2 are fitted together to form a dynamic sealing structure, and an elastic gasket is provided between the sealing ring seat 1 and the sealing groove or / and between the sealing ring seat 2 and the mounting groove.

[0011] In the above-mentioned rotary spray head, the sealing ring seat 1 and the sealing ring seat 2 are both made of silicon carbide.

[0012] In the above-mentioned rotary spray head, an irregularly shaped circumferential positioning groove 1 is provided on the rear end face of the rotating shaft located at the notch of the sealing groove, a convex edge 1 is provided on the sealing ring seat 1 and is located in the circumferential positioning groove 1 and is matched with the circumferential positioning groove 1, and an irregularly shaped circumferential positioning groove 2 is provided on the front end face of the connecting nut located at the notch of the installation groove, and a convex edge 2 is provided on the sealing ring seat 2 and is located in the circumferential positioning groove 2 and is matched with the circumferential positioning groove 2.

[0013] In the above-mentioned rotary spray head, sealing rings are arranged between the outer wall of the sealing ring seat 1 and the inner wall of the sealing groove, and between the outer wall of the sealing ring seat 2 and the inner wall of the installation groove.

[0014] In the above-mentioned rotating nozzle, the rotating head includes a rotating base fixedly connected to the rotating shaft, and a diverter base arranged on the inner cavity of the rotating base, a plurality of spray holes 1 and a spray hole 2 with an inclination angle different from that of the spray hole 1 are evenly distributed on the outer wall of the rotating base along its circumference, a water passage chamber 1 connected to the spray hole 1 and a water passage chamber 2 connected to the spray hole 2 are formed between the rotating base and the diverter base, a diverter groove connected to the inner hole of the rotating shaft is provided on the rear end surface of the diverter groove, and a plurality of water through holes 1 and a water through hole 2 are provided on the bottom surface of the diverter groove, and the water outlet port is connected to the water passage chamber 1, and the water outlet port is connected to the water passage chamber 2.

[0015] In the above-mentioned rotary sprinkler, the water inlet ports of water hole one and water hole two are alternately and evenly spaced on a circle with the center of the bottom surface of the diverter groove as the center, a switching body that can slide back and forth and rotate circumferentially is arranged in the diverter groove, a return spring is arranged between the switching body and the bottom surface of the diverter groove, the switching body is provided with drainage holes that pass through its front and rear end surfaces, and the number and position of the drainage holes correspond to the water hole one, and a plunger head corresponding to the number and position of the water hole two is arranged on the front end surface of the switching body, and when the drainage hole is connected with water hole one or water hole two, the plunger head is blocked on water hole two or water hole one.

[0016] In the above-mentioned rotating sprinkler, a circumferential rotating groove is opened on the outer peripheral wall of the switching body, and the circumferential rotating groove includes a water inlet end with a port located on the rear end surface of the switching body, a water outlet end with a port located on the front end surface of the switching body, and a bending portion connecting the water inlet end and the water outlet end. The high-pressure water flow flows through the water inlet end, the bending portion and the water outlet end in sequence and applies a force to the bending portion to drive the switching body to rotate circumferentially.

[0017] The outstanding advantages of the present invention compared with the prior art are:

[0018] 1. The present invention directly sets the centralizing fin on the shell, eliminating the centralizer structure, and the centralizing fin and the shell are an integrated structure and cannot be disassembled, so there is no need to assemble the centralizing fin, which effectively simplifies the number of parts and improves assembly efficiency; at the same time, since the centralizer structure is omitted, the present invention directly opens an oil filling hole on the shell, which is convenient for filling or replacing the damping oil, which not only reduces the difficulty of assembly operation, but also does not need to be disassembled for later maintenance;

[0019] 2. The groove depth of the spiral groove of the present invention gradually decreases in the direction away from the oil injection hole, which can enable the damping oil to escape from the spiral groove and enter between the outer wall surface of the damping ring body and the inner wall surface of the shell, further improving the lubrication effect between the outer wall surface of the damping ring body and the inner wall surface of the shell;

[0020] 3. The sealing ring seat 1 and the sealing ring seat 2 of the present invention are matched with a dynamic sealing structure, and the wear between the sealing ring seat 1 and the sealing ring seat 2 is compensated by the elastic effect of the elastic gasket. At the same time, the sealing ring seat 1 and the sealing ring seat 2 are both made of silicon carbide, which has good wear resistance and long service life. Description of the drawings:

[0021] Figure 1 It is an overall stereogram of the present invention;

[0022] Figure 2 is an overall cross-sectional view of the present invention;

[0023] Figure 3 is a three-dimensional diagram of the rotation axis of the present invention;

[0024] Figure 4 is a three-dimensional diagram of a connecting nut of the present invention;

[0025] Figure 5 It is a three-dimensional diagram of the sealing ring seat 1 or the sealing ring seat 2 of the present invention;

[0026] Figure 6 is a stereoscopic diagram of a flow dividing matrix of the present invention;

[0027] Figure 7 It is a stereoscopic diagram of the switching body of the present invention.

[0028] In the figure: 1, rotating shaft; 2, rotating head; 3, housing; 4, connecting nut; 5, damping ring; 6, oil seal; 7, stabilizing fin; 8, oil filling hole; 9, bearing; 10, oil through hole; 11, spiral groove; 12, sealing groove; 13, sealing ring seat 1; 14, mounting groove; 15, sealing ring seat 2; 16, elastic gasket; 17, circumferential positioning groove 1; 18, convex edge 1; 19, circumferential positioning groove 2; 20, convex edge 2; 21, sealing Sealing ring; 22, rotating base; 23, diverter base; 24, injection hole 1; 25, injection hole 2; 26, water passage chamber 1; 27, water passage chamber 2; 28, diverter groove; 29, water passage hole 1; 30, water passage hole 2; 31, switching body; 32, return spring; 33, drainage hole; 34, plunger head; 35, circumferential rotating groove; 36, water inlet end; 37, water outlet end; 38, bending part; 39, core plug; 40, O-ring. Specific implementation method:

[0029] The present invention is further described below with reference to specific embodiments. Figure 1 —7:

[0030] A rotary spray head includes a hollow rotary shaft 1, a rotary head 2 connected to the front end of the rotary shaft 1, a housing 3 sleeved on the outer periphery of the rotary shaft 1, and a connecting nut 4 fixed to the rear end of the housing 3. A damping ring 5 is provided in the middle of the rotary shaft 1, and oil seals 6 are provided on the rotary shaft 1 on both sides of the damping ring 5. An oil storage chamber filled with damping oil is formed between the two oil seals 6 in the inner cavity of the housing 3. A plurality of straightening fins 7 are evenly distributed along the circumference of the outer wall of the housing 3 and are arranged along the radial direction of the housing 3. The straightening fins 7 and the housing 3 are an integrated structure. An oil filling hole 8 connected to the oil storage chamber is provided on the outer wall of the housing 3, and a plug is detachably connected to the oil filling hole 8. The plug can be fixed to the oil filling hole 8 by threaded connection or by plunger connection.

[0031] Compared with the prior art, the present invention directly arranges the straightening fin 7 on the outer shell 3, eliminating the centralizer structure, and the straightening fin 7 and the outer shell 3 are an integrated structure and cannot be disassembled, so there is no need to assemble the straightening fin 7, which effectively simplifies the number of parts and improves the assembly efficiency; at the same time, since the centralizer structure is omitted, the present invention directly opens an oil filling hole 8 on the outer shell 3, which can facilitate the filling or replacement of the damping oil, which not only reduces the difficulty of assembly operation, but also does not need to be disassembled for later maintenance.

[0032] Furthermore, the rotational connection structure between the rotating shaft 1 and the outer shell 3 is as follows: the rotating shaft 1 located in the oil storage cavity and on both sides of the damping ring body 5 is rotationally connected to the outer shell 3 through bearings 9; in the present embodiment, only one oil filling hole 8 is provided, and in order to enable all components in the oil storage cavity to be lubricated by the damping oil, the opening position of the oil filling hole 8 is optimized, and there are oil filling gaps between the two side surfaces of the damping ring body 5 and the corresponding bearings 9, the inner port of the oil filling hole 8 is connected to one of the oil filling gaps, and the damping ring body 5 is provided with an oil through hole 10 that passes through the front and rear sides of the damping ring body 5.

[0033] At the same time, in order to enable the damping oil to lubricate the outer wall surface of the damping ring body 5 and the inner wall surface of the outer shell 3, a spiral groove 11 is opened on the outer peripheral surface of the damping ring body 5, and the inner port of the oil filling hole 8 is located at the front end or rear end of the spiral groove 11. In addition, in order to further improve the lubrication effect between the outer wall surface of the damping ring body 5 and the inner wall surface of the outer shell 3, the damping oil is enabled to escape from the spiral groove 11 and enter between the outer wall surface of the damping ring body 5 and the inner wall surface of the outer shell 3. The groove depth of the spiral groove 11 gradually decreases in the direction away from the oil filling hole 8, and the damping ring body 5 and the spiral groove 11 are driven to rotate by the rotating shaft 1 to guide the damping oil to flow from the front end or rear end of the spiral groove 11 to the rear end or front end.

[0034] Furthermore, the inner hole of the connecting nut 4 is connected with the inner hole of the rotating shaft 1. In order to ensure the sealing between the two, the specific sealing matching structure is as follows: a sealing groove 12 connected with the inner hole of the rotating shaft 1 is provided on the rear end face of the rotating shaft 1, and a sealing ring seat 13 with an inner hole is fixed in the inner circumference of the sealing groove 12; a mounting groove 14 connected with the inner hole of the connecting nut 4 is provided on the front end face of the connecting nut 4, and a sealing ring seat 2 15 with an inner hole is fixed in the inner circumference of the mounting groove 14; the rear end face of the sealing ring seat 13 and the front end face of the sealing ring seat 2 15 are fitted to form a dynamic sealing structure; at the same time, after working for a long time, the sealing ring seat 13 and the sealing ring seat 2 15 will inevitably wear, resulting in a decrease in the dynamic sealing between the two. Therefore, in order to compensate for the wear between the sealing ring seat 13 and the sealing ring seat 2 15, an elastic gasket 16 is provided between the sealing ring seat 13 and the sealing groove 12 or / and between the sealing ring seat 2 15 and the mounting groove 14.

[0035] At the same time, in order to make the sealing ring seat 1 13 and the sealing ring seat 2 15 have better wear resistance, the sealing ring seat 1 13 and the sealing ring seat 2 15 are both made of silicon carbide.

[0036] Furthermore, in order to enable the sealing ring seat 13 to be circumferentially fixed in the sealing groove 12, the specific cooperation method between the sealing ring seat 13 and the sealing groove 12 is as follows: an irregularly shaped circumferential positioning groove 17 is opened on the rear end face of the rotating shaft 1 at the notch of the sealing groove 12, and a convex edge 18 is provided on the sealing ring seat 13, which is located in the circumferential positioning groove 17 and matched with the circumferential positioning groove 17; similarly, in order to enable the sealing ring seat 2 15 to be circumferentially fixed in the mounting groove 14, the specific cooperation method between the sealing ring seat 2 15 and the mounting groove 14 is as follows: an irregularly shaped circumferential positioning groove 2 19 is opened on the front end face of the connecting nut 4 at the notch of the mounting groove 14, and a convex edge 20 is provided on the sealing ring seat 2 15, which is located in the circumferential positioning groove 2 19 and matched with the circumferential positioning groove 2 19. In addition, in this embodiment, the elastic gasket 16 is respectively arranged between the circumferential positioning groove 17 and the convex edge 18, and between the circumferential positioning groove 19 and the convex edge 20.

[0037] In addition, in order to ensure the sealing between the outer wall surface of the sealing ring seat 13 and the inner wall surface of the sealing groove 12, and between the outer wall surface of the sealing ring seat 15 and the inner wall surface of the mounting groove 14, a sealing ring 21 is provided between the outer wall of the sealing ring seat 13 and the inner wall of the sealing groove 12, and between the outer wall of the sealing ring seat 15 and the inner wall of the mounting groove 14.

[0038] In addition, the specific structure adopted by the rotating head 2 of the present invention is as follows: the rotating head 2 includes a rotating base 22 fixedly connected to the rotating shaft 1, and a diverter base 23 arranged on the inner cavity of the rotating base 22, a plurality of injection holes 24 and injection holes 25 having an inclination angle different from that of the injection holes 24 are uniformly distributed on the outer wall of the rotating base 22 along its circumference, a water passage chamber 26 connected to the injection hole 24 and a water passage chamber 27 connected to the injection hole 25 are formed between the rotating base 22 and the diverter base 23, a diverter groove 28 connected to the inner hole of the rotating shaft 1 is provided on the rear end surface of the diverter base 23, and a plurality of water through holes 29 whose water outlet ports are connected to the water passage chamber 26 and water through holes 30 whose water outlet ports are connected to the water passage chamber 27 are provided on the bottom surface of the diverter groove 28. That is, two different spraying water paths are formed between the rotating base 22 and the diverting base 23, and spraying water is sprayed outwards through the spray hole 1 24 and the spray hole 2 25 having different inclination angles.

[0039] The fixed connection structure between the rotating base 22 and the rotating shaft 1 and the flow-dividing base 23 is as follows: a bushing 39 is fixedly sleeved on the corresponding end of the rotating shaft 1, the rear port of the rotating base 22 is sleeved on the front end of the bushing 39, and the front end face of the bushing 39 is in conflict with the rear end face of the flow-dividing base 23, and the front end face of the flow-dividing base 23 is against the inner end face of the rotating base 22. At the same time, an O-ring 40 is arranged between the outer side wall of the flow-dividing base 23 and the inner side wall of the rotating base 22 to ensure the sealing between the flow-dividing base 23 and the rotating base 22.

[0040] In order to enable the injection hole 1 24 and the injection hole 25 to spray separately, the water inlet ports of the water hole 1 29 and the water hole 2 30 are alternately and evenly spaced on a circle with the center of the bottom surface of the diverter groove 28 as the center. A switching body 31 capable of sliding back and forth and rotating circumferentially is provided in the diverter groove 28. A return spring 32 is provided between the switching body 31 and the bottom surface of the diverter groove 28. The switching body 31 is provided with drainage holes 33 that penetrate the front and rear end surfaces thereof, and the number and position of the drainage holes 33 correspond to those of the water hole 1 29. A plunger head 34 corresponding to the number and position of the water holes 30 is provided on the front end surface of the switching body 31, wherein the switching body 31 can overcome the elastic force of the return spring 32 under the water pressure of the jetting water flow, and when the drainage hole 33 is connected with the water hole 29 and the plunger head 34 is blocked at the water hole 30, the purpose of the injection hole 24 spraying outward alone can be achieved; and when the drainage hole 33 is connected with the water hole 20 and the plunger head 34 is blocked at the water hole 29, the purpose of the injection hole 25 spraying outward alone can be achieved.

[0041] In order to control the circumferential rotation of the switching body 31 so as to achieve the automatic switching of the separate injections between the injection hole 1 24 and the injection hole 25, a circumferential rotating groove 35 is provided on the outer peripheral wall of the switching body 31. The circumferential rotating groove 35 includes a water inlet end 36 having a port located on the rear end surface of the switching body 31, a water outlet end 37 having a port located on the front end surface of the switching body 31, and a bending portion 38 connecting the water inlet end 36 and the water outlet end 37. The high-pressure water flow flows through the water inlet end 36, the bending portion 38 and the water outlet end 37 in sequence and applies a force to the bending portion 38 to drive the switching body 31 to rotate circumferentially.

[0042] The above embodiment is only one of the preferred embodiments of the present invention, and is not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made based on the shape, structure, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary spray head, comprising a hollow rotary shaft (1), a rotary head (2) connected to the front end of the rotary shaft (1), a housing (3) sleeved on the outer periphery of the rotary shaft (1), and a connecting nut (4) fixed to the rear end of the housing (3), a damping ring (5) being arranged in the middle of the rotary shaft (1), oil seals (6) being arranged on the rotary shaft (1) at both sides of the damping ring (5), an inner cavity of the housing (3) forming an oil storage cavity filled with damping oil between the two oil seals (6), characterized in that: A plurality of straightening fins (7) are evenly distributed along the circumference of the outer wall of the shell (3) and are arranged along the radial direction of the shell (3); the straightening fins (7) and the shell (3) are an integral structure; an oil injection hole (8) communicating with the oil storage cavity is provided on the outer wall of the shell (3); a plug is detachably connected to the oil injection hole (8); The rotating shaft (1) located in the oil storage cavity and on both sides of the damping ring body (5) is rotatably connected to the housing (3) via bearings (9); oil injection gaps are provided between the two side surfaces of the damping ring body (5) and the corresponding bearings (9); the inner end of the oil injection hole (8) is connected to one of the oil injection gaps; and the damping ring body (5) is provided with oil holes (10) penetrating the front and rear side surfaces of the damping ring body (5); A spiral groove (11) is provided on the outer circumferential surface of the damping ring body (5); the inner end of the oil injection hole (8) is located at the front end or rear end of the spiral groove (11); the groove depth of the spiral groove (11) gradually decreases in a direction away from the oil injection hole (8); and the damping ring body (5) and the spiral groove (11) are driven by the rotating shaft (1) to rotate so as to guide the damping oil to flow from the front end or rear end of the spiral groove (11) to the rear end or front end; A sealing groove (12) communicating with the inner hole of the rotating shaft (1) is formed on the rear end surface of the rotating shaft (1), a sealing ring seat (13) having an inner hole is fixed in the inner circumference of the sealing groove (12), a mounting groove (14) communicating with the inner hole of the connecting nut (4) is formed on the front end surface of the connecting nut (4), a sealing ring seat (15) having an inner hole is fixed in the inner circumference of the mounting groove (14), the rear end surface of the sealing ring seat (13) and the front end surface of the sealing ring seat (15) are fitted together to form a dynamic sealing structure, and an elastic gasket (16) is provided between the sealing ring seat (13) and the sealing groove (12) or / and between the sealing ring seat (15) and the mounting groove (14); An irregularly shaped circumferential positioning groove (17) is provided on the rear end surface of the rotating shaft (1) at the notch of the sealing groove (12); a convex edge (18) located in and matched with the circumferential positioning groove (17) is provided on the sealing ring seat (13); an irregularly shaped circumferential positioning groove (19) is provided on the front end surface of the connecting nut (4) at the notch of the mounting groove (14); and a convex edge (20) located in and matched with the circumferential positioning groove (19) is provided on the sealing ring seat (15).

2. A rotary spray head according to claim 1, characterized in that: The sealing ring seat 1 (13) and the sealing ring seat 2 (15) are both made of silicon carbide.

3. A rotary spray head according to claim 1, characterized in that: A sealing ring (21) is provided between the outer wall of the sealing ring seat 1 (13) and the inner wall of the sealing groove (12), and between the outer wall of the sealing ring seat 2 (15) and the inner wall of the mounting groove (14).

4. A rotary spray head according to claim 1, characterized in that: The rotating head (2) comprises a rotating base (22) fixedly connected to the rotating shaft (1), and a flow dividing base (23) arranged on the inner cavity of the rotating base (22); a plurality of injection holes (24) and a plurality of injection holes (25) are uniformly distributed along the circumference of the outer wall of the rotating base (22); a water passage chamber (26) communicating with the injection hole (24) and a water passage chamber (27) communicating with the injection hole (25) are formed between the rotating base (22) and the flow dividing base (23); a flow dividing groove (28) communicating with the inner hole of the rotating shaft (1) is formed on the rear end surface of the flow dividing base (23); a plurality of water through holes (29) and a plurality of water through holes (30) are formed on the bottom surface of the flow dividing groove (28), wherein the water outlet port is connected with the water passage chamber (26) and the water outlet port is connected with the water passage chamber (27).

5. A rotary spray head according to claim 4, characterized in that: The water inlet ports of the water through hole 1 (29) and the water through hole 2 (30) are alternately and evenly spaced on a circumference with the center of the bottom surface of the diverter groove (28) as the center. A switching body (31) capable of sliding forward and backward and rotating in the circumferential direction is arranged in the diverter groove (28). A return spring (32) is arranged between the switching body (31) and the bottom surface of the diverter groove (28). The switching body (31) is provided with drainage holes (33) penetrating the front and rear end surfaces thereof, and the number and position of the drainage holes correspond to the number and position of the water through hole 1 (29). A plunger head (34) corresponding to the number and position of the water through hole 2 (30) is arranged on the front end surface of the switching body (31). When the drainage holes (33) are connected with the water through hole 1 (29) or the water through hole 2 (30), the plunger head (34) blocks the water through hole 2 (30) or the water through hole 1 (29).

6. A rotary spray head according to claim 5, characterized in that: A circumferentially rotating groove (35) is provided on the outer peripheral wall of the switching body (31). The circumferentially rotating groove (35) includes a water inlet end (36) whose port is located on the rear end surface of the switching body (31), a water outlet end (37) whose port is located on the front end surface of the switching body (31), and a bent portion (38) connecting the water inlet end (36) and the water outlet end (37). High-pressure water flows through the water inlet end (36), the bent portion (38), and the water outlet end (37) in sequence and applies a force to the bent portion (38) to drive the switching body (31) to rotate circumferentially.

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