CN202624901U - Foam pump - Google Patents
Foam pump Download PDFInfo
- Publication number
- CN202624901U CN202624901U CN 201220086683 CN201220086683U CN202624901U CN 202624901 U CN202624901 U CN 202624901U CN 201220086683 CN201220086683 CN 201220086683 CN 201220086683 U CN201220086683 U CN 201220086683U CN 202624901 U CN202624901 U CN 202624901U
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- Prior art keywords
- connecting rod
- pump housing
- pump
- foam
- head cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a foam pump. The foam pump comprises an upper cover, a head cap, a connecting rod and a pump set, wherein the pump set comprises a pump body, a small piston, a spring and a marble piece; and the spring is arranged between the connecting rod and the pump body to ensure that the connecting rod has a trend of always ejecting the connecting rod upwards. The foam pump is characterized in that a large piston is also sleeved outside the colon body of the head cap; the outside diameter of the large piston is matched with the inside diameter of the pump body; an O-shaped sealing ring is arranged between the large piston and the inner wall of the pump body; a concave cavity communicated with a nozzle is formed at the bottom of the column body of the head cap; the head of the connecting rod is inserted into the concave cavity; a cavity is formed between the concave cavity of the head cap and the head of the connecting rod; a filtering screen and a foam generator are arranged in the cavity body; the filtering screen is positioned above a foam generator; and the bottom of the foam generator is limited in the connecting rod. By the foam pump, a foaming screen in the prior art is replaced by the filtering screen and the foam generator to ensure that the pump body can generate enriched foams, so that the foaming effect is improved; and a gas-returning ring structure is used, and a mounting structure is simplified, so that the overall assembly of the foam pump is convenient and simple.
Description
Technical field
The utility model relates to a kind of foam pump.
Background technology
Foam pump is the pump housing common in a kind of daily life and the technical application; Like the patent No. is a kind of foam pump the Chinese utility model of ZL200720113219.8 just discloses; It includes the pump housing, big piston, big piston bar, valve piston, small piston rod, head cap, foam screen, it is characterized in that being provided with in the described big piston bar check valve that is communicated with the big piston gas cavity, and; The valve block that is sleeve-shaped that the check valve main body adopts elastomeric material to make; Valve block has on the permanent seat that step surface is installed in the big piston bar, and, the conical sealing surface that the valve block upper end adopts diameter to increase gradually; Carry out fitted seal with the intercommunicating pore on the big piston bar, intercommunicating pore is communicated with gas-liquid mixed cavity and big piston gas cavity in the big piston bar.In this patent structure; The big lid and the pump housing of foam pump are made respectively as separate part, and it is too little that screw socket can not be made, and volume is also bigger; In addition; Spring is arranged on outside the small piston rod, in the big piston bar, contacts with liquid easily during spring work, makes liquid receive the secondary pollution possibility bigger.
And for example the patent No. is that the Chinese utility model " a kind of foam pump " of ZL200820167006.8 is the improvement to above-mentioned foam pump; It is characterized in that: the pump housing and said big lid one-shot forming form integral piece, and described head cap and said big piston one-shot forming form integral piece; Be provided with the seal ring sealing of elastic material between big piston and the pump housing inwall.This patent forms integral piece with head cap and said big piston one-shot forming; Be provided with the seal ring sealing of elastic material between big piston and the pump housing inwall; Simplified the structure of big piston; The pump housing itself can be used as the piston rod use of big piston simultaneously, need not to be provided with separately piston rod, makes foam pump in-to-in structure compact more.But the foam screen in this patent is taken into account the effect that produces foam and filtration, and the effect of foam jet is still not good enough; And in order to guarantee inside and outside air pressure balance, the pump housing offers induction opening; But induction opening is the outer ring that is opened in big lid, also needs an other sheathed housing to flow out the pump housing to prevent internal liquid outside the big lid, and such structure is comparatively complicated; Also increase time of setting up, awaited to do further improvement.
The utility model content
The utility model technical matters to be solved is that a kind of simple in structure, foam pump that the foaming effect is better is provided to above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of foam pump includes
Last cover offers through hole vertically;
Head cap is provided with nozzle, and said head cap includes shell and the cylinder that takes shape in this shell, and this head cap movably is arranged at the interior also ability of said through hole axial limiting in this through hole;
Connecting rod is connected the bottom of said head cap;
The pump assembly; Include the pump housing, valve piston, spring and hoodle, wherein, the said pump housing is connected said bottom of going up cover; Said connecting rod inserts in the said pump housing; Said valve piston is placed in the said pump housing and can moves with said connecting rod, and said hoodle is arranged at the suction end of the said pump housing, and said spring is arranged between the said connecting rod and the pump housing and makes said connecting rod have all the time the upwards trend of jack-up;
It is characterized in that: also be arranged with big piston outside the cylinder of said head cap, the external diameter of said big piston and the internal diameter of the said pump housing are suitable, are provided with O-ring seals between the inwall of the said big piston and the said pump housing; The cylinder of said head cap bottom offers the cavity that is connected with said nozzle; The head of said connecting rod is inserted in this cavity; Form a cavity between the cavity of said head cap and the head of connecting rod, be provided with filtering net and foam generator in the said cavity, and; Said filtering net is positioned at the top of said foam generator, and the bottom of said foam generator is limited in the said connecting rod.
As preferably, the middle part of said connecting rod forms convex shoulder, and said convex shoulder offers the air extractor vent that can be connected with the said pump housing vertically, is provided with the shim liner of this air extractor vent of sealing between the convex shoulder inwall of said foam generator and said connecting rod.Under running condition not, shim liner plays sealing function, and after the liquid in the pump housing was drunk up, liquid can back down shim liner and get into foam generator, makes that liquid gas mixtinite obtains mixing.
In order to realize the fixing of spring, as preferably, the bottom of the said pump housing forms the circular groove that the cross section takes the shape of the letter U, and the two ends of said spring are limited in respectively on said circular groove and the said convex shoulder.
In order to keep the air pressure balance inside and outside the pump housing; Prevent that the bottle that connects the pump housing is crushed, as preferably, the bottom of the said pump housing also is formed with downward vertically protruding axle and the retaining portion that is disposed radially; Be arranged with the return-air circle on the protruding axle of the said pump housing; The upper surface of said return-air circle radially offers air inlet duct, is provided with rubber ring between the protruding axle of the said return-air circle and the said pump housing, and the bottom of said return-air circle also is provided with the packing seal that the inwall with the pump housing offsets.This structure is offered air inlet duct at the end face of return-air circle, makes gas pass through the end face of return-air circle and the gap between the pump housing is passed through, and is opened in the structure of side than induction opening, has omitted exterior housing, simplifies the structure, and assembles simpler.
Preferred as further, the head of said valve piston is along circumferentially offering annular groove, and the inwall of said connecting rod forms and can block the hole clipping of joining mutually with said groove, and the outside of said valve piston also is arranged with can be with respect to the piston seat of move in the said pump housing.
As preferably, the bottom of the said pump housing is connected with a valve body, and said hoodle is arranged on the sucking hole of said valve body, and the bottom of said valve body also is connected with suction pipe.
As preferably, described loam cake also be provided with can and said head cap on renovating of being interlocked of nozzle.This is renovated when not using, and can play protection nozzle and antisoiling effect, and, can also avoid maloperation, prevent that head cap from pressing because of carelessness after, liquid overflows from nozzle.
Compared with prior art, the advantage of the utility model is: foam screen of the prior art is replaced with filtering net and foam generator, owing to adopted foam generator, make the pump housing can produce the more foam of horn of plenty, improved foaming effect, use better; In addition, adopt the return-air coil structures, offer air inlet duct at the end face of this return-air circle; Make that gas can be through the turnover of the gap between air inlet duct and the pump housing retaining portion; Save the externally structure of sheathed housing, simplified mounting structure, made whole assembling convenient simple.
Description of drawings
Fig. 1 is the foam pump integral structure scheme drawing (under the running condition) of the utility model embodiment.
Fig. 2 is a three-dimensional exploded view shown in Figure 1.
Fig. 3 is a cutaway view shown in Figure 1.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Like Fig. 1～shown in Figure 3, present embodiment is a kind of foam pump, and this foam pump includes cover 1, head cap 2, connecting rod 3 and pump assembly, and the pump assembly includes the pump housing 71, valve piston 72, piston seat 73, spring 74, hoodle 75, valve body 76 and suction pipe 77.
Wherein, cover 1 on and offer through hole vertically; Head cap 2 movably is arranged in the through hole of cover 1; One side of this head cap 2 offers nozzle 21; Also be provided with one on the last cover 1 and renovate 11, this is renovated 11 and can cooperate with nozzle 21 and be interlockingly connected, and has both played the effect of proofing dust and protecting; Can prevent maloperation again, avoid head cap 2 to press back liquid because of carelessness and overflow; The bottom of head cap 2 is formed with L shaped limiting section, and this limiting section can offset with the bottom of last cover 1 and realize axial limiting;
The pump housing 71 open upper end are connected with the bottom of last cover 1; The lower ending opening of this pump housing 71 is connected with bottle; The bottom of the pump housing 71 is formed with downward vertically protruding axle and the retaining portion 711 that is disposed radially, and forms the circular groove 712 that the cross section takes the shape of the letter U between the retaining portion of the pump housing 71 and the protruding axle;
Connecting rod 3 is inserted in the pump housing 71 and with the protruding axle of this pump housing 71 and docks; Valve piston 72 is placed in the protruding axle of the pump housing 71; Wherein, the inner wall at end of connecting rod 3 forms hole clipping, and the head of valve piston 72 can block the annular groove of joining with the hole clipping of connecting rod 3 mutually along circumferentially offering; Valve piston 72 is limited in the hole clipping and can moves vertically with connecting rod 3, and the outside of valve piston 72 also is arranged with can be with respect to the axially movable piston seat 73 of protruding axle inwall of the pump housing 71;
Be arranged with return-air circle 8 on the protruding axle of the pump housing 71, the upper surface of return-air circle 8 radially offers air inlet duct 81, is provided with rubber ring 82 between the protruding axle of the return-air circle 8 and the pump housing 71, and the bottom of return-air circle 8 also is provided with the packing seal 83 that the inwall with the pump housing 71 offsets;
The foam pump working process of present embodiment is: open and renovate, when pressing head cap 2, head cap 2 drivening rods 3 also promote big piston 6 and move downward; Under the O-ring seals effect of big piston 6, the gas cavity in the pump housing 71 is compressed, and air pressure increases; Along with the increase of air pressure, the gas in the gas cavity just backs down shim liner 33 through the air extractor vent on the connecting rod 3 32, enters into the gas-liquid mixed cavity A that is made up of head cap 2 and connecting rod 3; Gas-liquid mixture carries out abundant hybrid concurrency bubble in foam generator 5; After passing through the filtration of filtering net 4 then, make gas-liquid mixture fine and smooth more, at last from nozzle 21 ejections; Move downward in the process at connecting rod 3; Valve piston 72 moves downward with connecting rod 3, and the liquid cavity B of the pump housing 71 is compressed, and makes hoodle 75 seal up the sucking hole of valve body 76 all the time; Because the friction force between valve piston 72 and the piston seat 73 is less than the friction force between the piston seat 73 and the pump housing 71; When valve piston 72 began to move downward process, piston seat 73 hysteresis valve pistons 72 moved down, and made that the sealed end between valve piston 72 and the piston seat 73 is in open mode; Liquid in the liquid cavity B of the pump housing 71 can enter into connecting rod 3 through the gap between valve piston 72 and the piston seat 73; Mix with gas, form gas-liquid mixture, prepare for spray next time from gas cavity C.
Behind openhanded beginning cap 2, connecting rod 3 is upward movement under the elastic-restoring force effect of spring 74, and drives big piston 6 and valve piston 72 upward movement together; Because the friction force between valve piston 72 and the piston seat 73 is less than the friction force between the piston seat 73 and the pump housing 71, when valve piston 72 beginning upward movement processes, piston seat 73 hysteresis valve pistons 72 move up; Make the sealed end between valve piston 72 and the piston seat 73 be in sealing state again, behind valve piston 72 and piston seat 73 upward movement together, it is big that the volume of liquid cavity B becomes; Air pressure reduces; Air outside then enters into and the pump housing 71 bonded assembly bottles through the air inlet duct on the return-air circle 8 81, and the air pressure in the bottle increases, and pushes hoodle 75 open; Liquid in the bottle is inhaled in the pump housing 71, and so circulation just can produce the action of spray foam.
Claims (7)
1. a foam pump includes
Last cover offers through hole vertically;
Head cap is provided with nozzle, and said head cap includes shell and the cylinder that takes shape in this shell, and this head cap movably is arranged at the interior also ability of said through hole axial limiting in this through hole;
Connecting rod is connected the bottom of said head cap;
The pump assembly; Include the pump housing, valve piston, spring and hoodle, wherein, the said pump housing is connected said bottom of going up cover; Said connecting rod inserts in the said pump housing; Said valve piston is placed in the said pump housing and can moves with said connecting rod, and said hoodle is arranged at the suction end of the said pump housing, and said spring is arranged between the said connecting rod and the pump housing and makes said connecting rod have all the time the upwards trend of jack-up;
It is characterized in that: also be arranged with big piston outside the cylinder of said head cap, the external diameter of said big piston and the internal diameter of the said pump housing are suitable, are provided with O-ring seals between the inwall of the said big piston and the said pump housing; The cylinder of said head cap bottom offers the cavity that is connected with said nozzle; The head of said connecting rod is inserted in this cavity; Form a cavity between the cavity of said head cap and the head of connecting rod, be provided with filtering net and foam generator in the said cavity, and; Said filtering net is positioned at the top of said foam generator, and the bottom of said foam generator is limited in the said connecting rod.
2. foam pump according to claim 1; It is characterized in that: the middle part of said connecting rod forms convex shoulder; Said convex shoulder offers the air extractor vent that can be connected with the said pump housing vertically, is provided with the shim liner of this air extractor vent of sealing between the convex shoulder inwall of said foam generator and said connecting rod.
3. foam pump according to claim 2 is characterized in that: the bottom of the said pump housing forms the circular groove that the cross section takes the shape of the letter U, and the two ends of said spring are limited in respectively on said circular groove and the said convex shoulder.
4. foam pump according to claim 1; It is characterized in that: the bottom of the said pump housing also is formed with downward vertically protruding axle and the retaining portion that is disposed radially; Be arranged with the return-air circle on the protruding axle of the said pump housing; The upper surface of said return-air circle radially offers air inlet duct, is provided with rubber ring between the protruding axle of the said return-air circle and the said pump housing, and the bottom of said return-air circle also is provided with the packing seal that the inwall with the pump housing offsets.
5. foam pump according to claim 1; It is characterized in that: the head of said valve piston is along circumferentially offering annular groove; The inwall of said connecting rod forms and can block the hole clipping of joining mutually with said groove, and the outside of said valve piston also is arranged with can be with respect to the piston seat of move in the said pump housing.
6. according to the described foam pump of arbitrary claim in the claim 1～5, it is characterized in that: the bottom of the said pump housing is connected with a valve body, and said hoodle is arranged on the sucking hole of said valve body, and the bottom of said valve body also is connected with suction pipe.
7. foam pump according to claim 1 is characterized in that: described go up cover also be provided with can and said head cap on renovating of being interlocked of nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220086683 CN202624901U (en) | 2012-03-08 | 2012-03-08 | Foam pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220086683 CN202624901U (en) | 2012-03-08 | 2012-03-08 | Foam pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202624901U true CN202624901U (en) | 2012-12-26 |
Family
ID=47378125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220086683 Expired - Lifetime CN202624901U (en) | 2012-03-08 | 2012-03-08 | Foam pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202624901U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054840A (en) * | 2015-08-17 | 2015-11-18 | 厦门建霖工业有限公司 | Foaming soap dispensing pump and foaming soap dispensing device and method using same |
| CN110053863A (en) * | 2019-05-29 | 2019-07-26 | 浙江晟祺实业有限公司 | A kind of nozzle structure |
| WO2023092461A1 (en) * | 2021-11-26 | 2023-06-01 | 佛山市长拓包装科技有限公司 | Pump body structure and foam pump |
-
2012
- 2012-03-08 CN CN 201220086683 patent/CN202624901U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054840A (en) * | 2015-08-17 | 2015-11-18 | 厦门建霖工业有限公司 | Foaming soap dispensing pump and foaming soap dispensing device and method using same |
| CN110053863A (en) * | 2019-05-29 | 2019-07-26 | 浙江晟祺实业有限公司 | A kind of nozzle structure |
| WO2023092461A1 (en) * | 2021-11-26 | 2023-06-01 | 佛山市长拓包装科技有限公司 | Pump body structure and foam pump |
| GB2616933A (en) * | 2021-11-26 | 2023-09-27 | Foshan Changtuo Packaging Tech Co Ltd | Pump body structure and foam pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |