CN207985643U

CN207985643U - A kind of atomizing pump

Info

Publication number: CN207985643U
Application number: CN201820337058.9U
Authority: CN
Inventors: 翁翰斌
Original assignee: Zhongshan City Fog Tyrants Industrial Co Ltd
Current assignee: Zhongshan City Fog Tyrants Industrial Co Ltd
Priority date: 2018-03-12
Filing date: 2018-03-12
Publication date: 2018-10-19
Anticipated expiration: 2028-03-12

Abstract

The utility model discloses a kind of atomizing pumps, it is equipped with inlet and pump pearl in pump chamber lower end, upper pump plunger shaft is equipped in cavity, lower pump plunger shaft is plugged in liquid-conveying ducts, communicating passage is equipped between lower pump plunger shaft external wall of upper portion and upper pump plunger shaft inner wall, import is equipped between upper pump plunger shaft lower end and lower pump plunger shaft, movable sleeve is equipped with piston on upper pump plunger shaft, it is arranged with short spring on upper pump plunger shaft between limited step and piston, locking closure is equipped at pump chamber upper end opening, resigning slot is equipped in the locking closure below through-hole, long spring is equipped between lower pump plunger shaft lower part and pump chamber lower end, the first positioning step is equipped in pump chamber lower part, spray channel is equipped in by nozzle, it is being equipped with cloud point by nozzle front end, it is arranged with head cap on by nozzle outer wall, spout is equipped on head cap, locking closure can be locked in the indoor bayonet member of pump by being equipped in pump chamber upper end.The utility model is simple in structure, easy to use, and air pump is fast, can effectively prevent the atomizing pump of leakage.

Description

A kind of atomizing pump

Technical field

The utility model is related to a kind of atomizing pumps.

Background technology

Atomizing pump has been widely used in the industries such as daily use chemicals and medicine, and its design is exquisite, and easy to use, pump output is stablized With energy anti-leak.But the compressed spring inside existing atomizing pump be all only there are one, it is relatively elaborate when in use in this way, Less stablize relatively, spray effect is less desirable.In addition, due to the defect in the design of existing atomizing pump, improper During use, the case where being easy to happen leakage.

Utility model content

The purpose of this utility model is to overcome shortcomings in the prior art, provide a kind of simple in structure, use Convenient, air pump is fast, can effectively prevent the atomizing pump of leakage.

In order to achieve the above object, the utility model uses following scheme：

A kind of atomizing pump includes pump chamber, and cavity is equipped in the pump chamber, and inlet is equipped in the pump chamber lower end, Pump pearl is equipped in the pump chamber above inlet, it is characterised in that：Upper pump plunger shaft is equipped in the cavity, in the upper pump plunger shaft Equipped with liquid-conveying ducts, it is plugged with lower pump plunger shaft in the liquid-conveying ducts of the upper pump plunger shaft lower end, in lower pump plunger shaft external wall of upper portion and upper pump It is equipped with the communicating passage that is connected with liquid-conveying ducts between column wall, is equipped between upper pump plunger shaft lower end and lower pump plunger shaft and leads to be connected to The import that road is connected, equipped with limited step on upper pump plunger shaft, movable sleeve on the upper pump plunger shaft between limited step and lower pump plunger shaft Equipped with piston, it is arranged with short spring on the upper pump plunger shaft between the limited step and piston, at the pump chamber upper end opening Equipped with the locking closure that upper pump plunger shaft can be prevented to be detached from pump chamber, through-hole is equipped in the locking closure, the upper pump plunger shaft is arranged in through-hole, The resigning slot of limited step can be accommodated by being equipped in locking closure below through-hole, be set between the lower pump plunger shaft lower part and pump chamber lower end There is a long spring, upper pump plunger shaft seals against each other and the piston and lower pump the piston upper end when being in highest order with locking closure lower end Column seals against each other to close import, and that piston can be made to detach to make import opening with lower pump plunger shaft is equipped in pump chamber lower part One positioning step is equipped in the upper pump plunger shaft upper end and presses nozzle, and described by spray channel is equipped in nozzle, the upper pump plunger shaft upper end is inserted It is connected in the liquid feeding end of spray channel, cloud point is equipped with by nozzle front end described, described by head cap is arranged on nozzle outer wall, in institute It states head cap position corresponding with cloud point and is equipped with the spout that can be connected to cloud point, be equipped with and locking closure can be locked in pump chamber upper end described It is scheduled on the indoor bayonet member of pump.

A kind of atomizing pump as described above, it is characterised in that being equipped between the input end and spray channel of cloud point can increase The atomization chamber mechanism of atomizing effect, the atomization chamber mechanism includes the circular cylindrical cavity being arranged by nozzle front end, described It is equipped with cloud point connecting pole in cylindrical cavity body, is equipped with small convex pillar in cloud point connecting pole front end, the small convex pillar connects with cloud point The vortex sheet for being equipped between column and capable of making liquid in rotation is connect, the cloud point includes cloud point ontology, in cloud point ontology rear end It is interior to be equipped with connection slot, it is equipped with atomization aperture in cloud point ontology front end, in connection slot and the cloud point being atomized between aperture It is equipped with buffering slot in ontology, oblique spout is equipped between spray channel and circular cylindrical cavity

A kind of atomizing pump as described above, it is characterised in that clamping step is equipped in the pump chamber external wall of upper portion, in bayonet Part position corresponding with clamping step is equipped with the interior salient point that can be locked in bayonet member on pump chamber, is equipped in the bayonet member Gasket seal, the gasket seal are set on pump chamber outer wall.

A kind of atomizing pump as described above, it is characterised in that the piston includes piston seat, in the piston seat Equipped with mounting hole, by interconnecting piece integrally formed with annular piston body on the piston seat periphery, the piston seat upper end is set It sets in annular piston body upper end, the piston seat lower end is concordant or stretches out annular piston body lower end, the short lower spring end top It is pressed on piston seat upper surface.

A kind of atomizing pump as described above, it is characterised in that the lower pump plunger shaft includes lower pump plunger shaft body, in the lower pump Cylinder lower end is equipped with T connector portion, and being equipped in the T connector portion upper surface of the external side of lower pump plunger shaft can be mutually close with piston seat lower end outer wall The annular frustum groove of envelope, in T connector subordinate portion, outer wall is equipped with spacing block set, and the long spring upper end is set in spacing block set Outside.

A kind of atomizing pump as described above, it is characterised in that the locking closure includes locking closure body, under the locking closure body End is equipped with connecting pole, and the connection column outer wall is resisted against on pump chamber inner wall, and energy and annular piston are equipped in the connecting pole lower end The elastic portion that body upper end seals against each other, the resigning slot is arranged in elastic portion and connecting pole, at pump chamber upper end opening Equipped with clamping land, the locking closure holds setting in clamping land in vitro, and being equipped in locking closure body upper surface can be with sealing cup shape At the bulge loop of sealing.

A kind of atomizing pump as described above, it is characterised in that outer wall is equipped with limited ring dais in upper pump plunger shaft lower part, in piston seat Lower inner wall position corresponding with limited ring dais is equipped with positioning land, and in the pump chamber upper end, outer wall is equipped with air vent, the work Air vent is closed when plug is in highest order.

A kind of atomizing pump as described above, it is characterised in that the pump chamber includes upper pump chamber, is set in upper pump chamber lower end There is lower pump chamber, is equipped with pump pearl room in lower pump chamber lower end, in pump pearl room, the upper pump chamber internal diameter is more than lower pump for the pump pearl setting Indoor diameter, first positioning step are arranged between upper pump chamber and lower pump chamber, and the second positioning step is equipped in lower pump chamber, Third positioning step is equipped between the pump pearl room and lower pump chamber, the long lower spring end top pressure is on third positioning step.

A kind of atomizing pump as described above, it is characterised in that the grafting suction pipe in the inlet, in the inlet Equipped with step in limit, via hole is equipped among step in the limit, suction pipe upper end top pressure is in limit under step On end face.

A kind of atomizing pump as described above, it is characterised in that be equipped with annular positioning groove by nozzle outer wall described, head cap with The corresponding position of annular positioning groove is equipped with positioning convex point, and positioning groove, the positioning convex point are equipped on the annular positioning groove Spout is connected with cloud point when falling into positioning groove.

In conclusion advantage is the utility model compared with the existing technology：

One, the utility model is designed using dual spring, and air pump is fast, and pump liquid is more stablized, and use is lighter, spraying effect Fruit is ideal；

Two, it when piston is in extreme higher position in the utility model, is tightly connected, effectively prevent with locking closure and lower pump plunger shaft respectively Due to bottle is extruded and there is a situation where leakage occurs, securely and reliably, good seal performance；

Three, the exit of nozzle is provided with cloud point and atomization chamber mechanism in the utility model, it can effectively will be from hydrojet channel The liquid of ejection is atomized, and atomizing effect is good；

Four, cloud point can be closed by head cap being rotated in the utility model, and the safe and healthy of cloud point spraying is effectively ensured；

Five, simple in structure in the utility model, it is easy to assembly.

Description of the drawings

Fig. 1 is the schematic diagram of the utility model；

Fig. 2 is the schematic diagram of the utility model locking closure；

Fig. 3 is the schematic diagram of the utility model piston；

Fig. 4 is the schematic diagram of pump plunger shaft under the utility model.

Specific implementation mode

Explanation and specific implementation mode are further described the utility model below in conjunction with the accompanying drawings：

A kind of atomizing pump as shown in Figures 1 to 4 includes pump chamber 1, cavity 2 is equipped in the pump chamber 1, in the pump 1 lower end of room is equipped with inlet 3, and pump pearl 4 is equipped in the pump chamber 1 above inlet 3, upper pump plunger shaft 5 is equipped in the cavity 2, It is equipped with liquid-conveying ducts 6 in the upper pump plunger shaft 5, lower pump plunger shaft 7 is plugged in the liquid-conveying ducts 6 of 5 lower end of upper pump plunger shaft, under The communicating passage 8 being connected with liquid-conveying ducts 6 is equipped between 7 external wall of upper portion of pump plunger shaft and 5 inner wall of upper pump plunger shaft, in 5 lower end of upper pump plunger shaft It is equipped with the import 9 being connected with communicating passage 8 between lower pump plunger shaft 7, limited step 10 is equipped on upper pump plunger shaft 5, in limiting stand Movable sleeve is equipped with piston 11 on upper pump plunger shaft 5 between rank 10 and lower pump plunger shaft 7, upper between the limited step 10 and piston 11 It is arranged with short spring 12 on pump plunger shaft 5, the locking closure that upper pump plunger shaft 5 can be prevented to be detached from pump chamber 1 is equipped at 1 upper end opening of the pump chamber 13, through-hole 14 is equipped in the locking closure 13, the upper pump plunger shaft 5 is arranged in through-hole 14, in the locking closure 13 below through-hole 14 Equipped with the resigning slot 15 that can accommodate limited step 10, long spring is equipped between 7 lower part of lower pump plunger shaft and 1 lower end of pump chamber 16,11 upper end of piston seals against each other upper pump plunger shaft 5 with 13 lower end of locking closure when being in highest order and 11 lower end of the piston is under Pump plunger shaft 7 seals against each other to close import 9, and being equipped in 1 lower part of pump chamber can make piston 11 detach to make import with lower pump plunger shaft 7 9 the first positioning steps 17 opened, are equipped in 5 upper end of upper pump plunger shaft and press nozzle 18, and spray channel is equipped with by nozzle 18 is interior described 22,5 upper end of upper pump plunger shaft is plugged in the liquid feeding end of spray channel 22, cloud point 23 is equipped with by 18 front end of nozzle described, in institute It states and is arranged with head cap 40 by 18 outer wall of nozzle, be equipped with and can be connected to cloud point 23 on the position corresponding with cloud point 23 of the head cap 40 Spout 41, locking closure 13 can be locked in bayonet member 50 in pump chamber 1 in described be equipped in 1 upper end of pump chamber.The utility model is adopted It is designed with dual spring, air pump is fast, and pump liquid is more stablized, and use is lighter, and spray effect is ideal.Piston in the utility model When in extreme higher position, it is tightly connected respectively with locking closure and lower pump plunger shaft, effectively prevent that leakage occurs since bottle is extruded It happens, securely and reliably, good seal performance.Head cap is rotated in the utility model can close cloud point, and cloud point spraying is effectively ensured It is safe and healthy.

The atomization of atomizing effect can be increased by being equipped between the input end of cloud point 23 and spray channel 22 in the utility model Chamber mechanism 24, the atomization chamber mechanism 24 includes the circular cylindrical cavity 241 being arranged by 18 front end of nozzle, in the cylinder It is equipped with cloud point connecting pole 244 in cavity 241, small convex pillar 242, the small convex pillar 242 are equipped in 244 front end of cloud point connecting pole The vortex sheet 243 of liquid in rotation can be made by being equipped between cloud point connecting pole 244, and the cloud point 23 includes cloud point ontology 231, It is equipped with connection slot 232 in 231 rear end of cloud point ontology, atomization aperture 233 is equipped in 231 front end of cloud point ontology, Buffering slot 234 is equipped in connection slot 232 and the cloud point ontology 231 being atomized between aperture 233, in spray channel 22 and circle Oblique spout 41 is equipped between cylindrical chamber 241.Liquid enters cylindrical cavity from oblique spout 41 in the utility model spray channel 22 Body 241, speed are accelerated and are rotated, and the progress of liquid macromolecular is discrete for the first time, enter buffering slot when passing through vortex sheet 243 When 234, progress is discrete for the second time, and atomizing effect is good.

It is equipped with clamping step 60 in 1 external wall of upper portion of the pump chamber in the utility model, in bayonet member 50 and clamping step 60 Corresponding position is equipped with the interior salient point 70 that can be locked in bayonet member 50 on pump chamber 1, and sealing is equipped in the bayonet member 50 Gasket 80, the gasket seal 80 are set on 1 outer wall of pump chamber.

Piston 11 described in the utility model includes piston seat 111, and mounting hole is equipped in the piston seat 111 112, by interconnecting piece 113 integrally formed with annular piston body 114 on 111 periphery of the piston seat, on the piston seat 111 End is arranged in 114 upper end of annular piston body, and 111 lower end of the piston seat is concordant or stretches out 114 lower end of annular piston body, described 12 lower end top pressure of short spring is on 111 upper surface of piston seat.Annular piston body 114 is a column in the utility model, in institute State and be equipped with arc groove in the middle part of column, 114 both ends of annular piston body respectively with 1 inner wall dynamic sealing of pump chamber.

Lower pump plunger shaft 7 described in the utility model includes lower pump plunger shaft body 71, and T-type is equipped in lower 71 lower end of pump plunger shaft body Head 72 is equipped with the ring that can be sealed against each other with 111 lower end outer wall of piston seat in 72 upper surface of T connector portion in 71 outside of lower pump plunger shaft body Shape frustum groove 73, in T connector portion, 72 lower part outer wall is equipped with spacing block set 74, and 16 upper end of long spring is set in spacing block set Outside 74.

Locking closure 13 described in the utility model includes locking closure body 131, and connecting pole is equipped in 131 lower end of locking closure body 132,132 outer wall of the connecting pole is resisted against on 1 inner wall of pump chamber, and being equipped in 132 lower end of the connecting pole can be with annular piston body The elastic portion 133 that 114 upper ends seal against each other, the resigning slot 15 are arranged in elastic portion 133 and connecting pole 132, are pumping Clamping land 134 is equipped at 1 upper end opening of room, 131 outer end of the locking closure body setting is in clamping land 134, in the locking closure 131 upper surface of body is equipped with the bulge loop 135 that sealing can be formed with sealing cup 19.

The utility model is equipped with limited ring dais 20 in 5 lower part outer wall of upper pump plunger shaft, in 111 lower inner wall of piston seat and spacing ring 20 corresponding position of platform is equipped with positioning land 21, is equipped with air vent 25 in 1 upper end outer wall of the pump chamber, the piston 11 is in most Air vent 25 is closed when high-order.Upper pump plunger shaft 5 moves down during use, and piston 11 and lower pump plunger shaft 7 are same under the action of short spring 12 When move down, when 114 lower face of annular piston body of piston 11 is resisted against on the first positioning step 17, upper pump plunger shaft 5 and piston 11 Separation, import 9 are opened, and 20 top pressure of limited ring dais is allowed to stop movement when positioning in land 21.

Pump chamber 1 described in the utility model includes upper pump chamber 101, and lower pump chamber 102 is equipped in 101 lower end of upper pump chamber, Lower 102 lower end of pump chamber is equipped with pump pearl room 103, and the setting of pump pearl 4 is in pump pearl room 103, under 101 internal diameter of upper pump chamber is more than 102 internal diameter of pump chamber, first positioning step 17 are arranged between upper pump chamber 101 and lower pump chamber 102, are set in lower pump chamber 102 There is the second positioning step 26, third positioning step 27, the long spring are equipped between the pump pearl room 103 and lower pump chamber 102 16 lower end top pressures are on third positioning step 27.

The utility model grafting suction pipe 28 in the inlet 3 is equipped with step 29 in limit in the inlet 3, Via hole 31 is equipped among step 29 in the limit, 28 upper end top pressure of the suction pipe is in limit on 29 lower face of step.

The utility model is equipped with annular positioning groove described by nozzle outer wall, in the position corresponding with annular positioning groove of head cap 40 Equipped with positioning convex point, positioning groove, spout 41 when the positioning convex point falls into positioning groove are equipped on the annular positioning groove It is connected with cloud point 23.Positioning is convenient.

Simple in structure in the utility model, easy to assembly, air pump is fast, stablizes, and atomizing effect is good.

The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.This The technical staff of industry is retouched in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments That states only illustrates the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model It will also have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.This practicality is new Type is claimed range and is defined by the appending claims and its equivalent thereof.

Claims

1. a kind of atomizing pump includes pump chamber (1), it is equipped with cavity (2) in the pump chamber (1), is set in the pump chamber (1) lower end There is inlet (3), pump pearl (4) be equipped in the pump chamber (1) above inlet (3), it is characterised in that：In the cavity (2) Equipped with upper pump plunger shaft (5), liquid-conveying ducts (6), the liquid-conveying ducts in upper pump plunger shaft (5) lower end are equipped in the upper pump plunger shaft (5) (6) it is plugged with lower pump plunger shaft (7) in, is equipped with and liquid-conveying ducts (6) between lower pump plunger shaft (7) external wall of upper portion and upper pump plunger shaft (5) inner wall The communicating passage (8) being connected, between upper pump plunger shaft (5) lower end and lower pump plunger shaft (7) be equipped be connected with communicating passage (8) into Mouth (9) is equipped with limited step (10), the upper pump plunger shaft (5) between limited step (10) and lower pump plunger shaft (7) on upper pump plunger shaft (5) Upper movable sleeve is equipped with piston (11), and short bullet is arranged on the upper pump plunger shaft (5) between the limited step (10) and piston (11) Spring (12) is equipped with the locking closure (13) that upper pump plunger shaft (5) can be prevented to be detached from pump chamber (1), described at the pump chamber (1) upper end opening Through-hole (14) is equipped in locking closure (13), upper pump plunger shaft (5) setting is in through-hole (14), the locking closure (13) below through-hole (14) It is interior to be equipped with the resigning slot (15) that accommodate limited step (10), it is set between lower pump plunger shaft (7) lower part and pump chamber (1) lower end There is a long spring (16), upper pump plunger shaft (5) seals against each other and institute piston (11) upper end when being in highest order with locking closure (13) lower end It states piston (11) lower end to seal against each other to close import (9) with lower pump plunger shaft (7), piston can be made by being equipped in pump chamber (1) lower part (11) the first positioning step (17) for making import (9) open is detached with lower pump plunger shaft (7), is set in upper pump plunger shaft (5) upper end Have by nozzle (18), described by spray channel (22) is equipped in nozzle (18), upper pump plunger shaft (5) upper end is plugged on spray channel (22) in liquid feeding end, it is equipped with cloud point (23) by nozzle (18) front end described, described by being arranged with head cap on nozzle (18) outer wall (40), the spout (41) that can be connected to cloud point (23) is equipped on the head cap (40) position corresponding with cloud point (23), in institute It states and is equipped with the bayonet member (50) that locking closure (13) can be locked in pump chamber (1) in pump chamber (1) upper end.

2. a kind of atomizing pump according to claim 1, it is characterised in that in the input end and spray channel of cloud point (23) (22) the atomization chamber mechanism (24) of atomizing effect can be increased by being equipped between, the atomization chamber mechanism (24) include setting by The circular cylindrical cavity (241) of nozzle (18) front end is equipped with cloud point connecting pole (244), described in the circular cylindrical cavity (241) Cloud point connecting pole (244) front end is equipped with small convex pillar (242), and energy is equipped between the small convex pillar (242) and cloud point connecting pole (244) It includes cloud point ontology (231) to make the vortex sheet (243) of liquid in rotation, the cloud point (23), in the cloud point ontology (231) It is equipped with connection slot (232) in rear end, atomization aperture (233) is equipped in cloud point ontology (231) front end, in connection slot (232) it is equipped with buffering slot (234) in the cloud point ontology (231) between atomization aperture (233), in spray channel (22) and circle Oblique spout (41) is equipped between cylindrical chamber (241).

3. a kind of atomizing pump according to claim 1, it is characterised in that be equipped with clamping platform in the pump chamber (1) external wall of upper portion Rank (60), bayonet member (50) can be locked in pump chamber (1) by being equipped on bayonet member (50) position corresponding with clamping step (60) On interior salient point (70), gasket seal (80) is equipped in the bayonet member (50), the gasket seal (80) is set in pump chamber (1) on outer wall.

4. a kind of atomizing pump according to claim 1, it is characterised in that the piston (11) includes piston seat (111), it is equipped with mounting hole (112) in the piston seat (111), passes through interconnecting piece on the piston seat (111) periphery (113) integrally formed with annular piston body (114), piston seat (111) upper end is arranged in annular piston body (114) upper end Interior, piston seat (111) lower end is concordant or stretches out annular piston body (114) lower end, and short spring (12) the lower end top pressure exists On piston seat (111) upper surface.

5. a kind of atomizing pump according to claim 4, it is characterised in that the lower pump plunger shaft (7) includes lower pump plunger shaft body (71), T connector portion (72) are equipped in lower pump plunger shaft body (71) lower end, in the T connector portion (72) on the outside of lower pump plunger shaft body (71) End face is equipped with the annular frustum groove (73) that can be sealed against each other with piston seat (111) lower end outer wall, outside T connector portion (72) lower part Wall is equipped with spacing block set (74), and long spring (16) upper end is set in spacing block set (74) outside.

6. a kind of atomizing pump according to claim 4, it is characterised in that the locking closure (13) includes locking closure body (131), it is equipped with connecting pole (132) in locking closure body (131) lower end, connecting pole (132) outer wall is resisted against in pump chamber (1) On wall, the elastic portion (133) that can be sealed against each other with annular piston body (114) upper end, institute are equipped in the connecting pole (132) lower end Resigning slot (15) setting stated is equipped with clamping in elastic portion (133) and connecting pole (132) at pump chamber (1) upper end opening Land (134), locking closure body (131) the outer end setting are set in clamping land (134) in locking closure body (131) upper surface The bulge loop (135) of sealing can be formed with sealing cup (19) by having.

7. a kind of atomizing pump according to claim 4, it is characterised in that in upper pump plunger shaft (5) lower part, outer wall is equipped with limited ring dais (20), it is equipped with positioning land (21) in piston seat (111) lower inner wall position corresponding with limited ring dais (20), in the pump chamber (1) upper end outer wall is equipped with air vent (25), and air vent (25) is closed when the piston (11) is in highest order.

8. a kind of atomizing pump according to claim 1, it is characterised in that the pump chamber (1) includes upper pump chamber (101), It is equipped with lower pump chamber (102) in upper pump chamber (101) lower end, pump pearl room (103), the pump pearl (4) are equipped in lower pump chamber (102) lower end In pump pearl room (103), upper pump chamber (101) internal diameter is more than lower pump chamber (102) internal diameter, first positioning step for setting (17) it is arranged between upper pump chamber (101) and lower pump chamber (102), the second positioning step (26) is equipped in lower pump chamber (102), Third positioning step (27) is equipped between the pump pearl room (103) and lower pump chamber (102), long spring (16) the lower end top pressure exists On third positioning step (27).

9. a kind of atomizing pump according to claim 1, it is characterised in that in the interior grafting suction pipe (28) of the inlet (3), It is equipped with step (29) in limit in the inlet (3), is equipped with via hole (31), institute among step (29) in the limit Suction pipe (28) upper end top pressure is stated in limit on step (29) lower face.

10. a kind of atomizing pump according to claim 1, it is characterised in that be equipped with circular orientation by nozzle (18) outer wall described Slot is equipped with positioning convex point in head cap (40) position corresponding with annular positioning groove, it is recessed that positioning is equipped on the annular positioning groove Slot, spout (41) is connected with cloud point (23) when the positioning convex point falls into positioning groove.