CN106628571A

CN106628571A - Emulsion pump

Info

Publication number: CN106628571A
Application number: CN201510424185.3A
Authority: CN
Inventors: 丁要武
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-17
Filing date: 2015-07-17
Publication date: 2017-05-10
Anticipated expiration: 2035-07-17
Also published as: CN106628571B

Abstract

An emulsion pump includes a pressing head; an air cylinder; an air cylinder cover arranged on the air cylinder; a piston rod, wherein one end of the piston rod extends through an inner hole of the air cylinder and is fixedly connected to the pressing head, and the other end of the piston rod extends to the inner part of the air cylinder and is connected to a piston; and a tooth sleeve which is connected to the air cylinder and is connected to an opening of a container using the emulsion pump. A piston rod body of the piston rod includes a first portion and a second portion; when the first portion extends in the inner hole of the air cylinder cover, a gap is formed between the piston rod and the air cylinder cover, and external air can flow through the gap. Preferably, when the second portion extends in the inner hole, the piston rod and the air cylinder cover form a seal contact. The emulsion pump can prevent the container from shrinking, and can achieve a waterproof effect.

Description

Emulsion pumps

Technical field

The present invention relates to a kind of emulsion pumps, more specifically to a kind of emulsion pumps for being capable of preventing absorbing shrinkage.Enter One step ground, the emulsion pumps can be push type emulsion pumps.

Background technology

Emulsion pumps are usually mounted with the vessel port of the bottled products such as bath foam, shampoo, for example The emulsion pumps of push type.Product in container can be pumped out container by user by pressing the emulsion pumps, for Use.

As shown in Figure 8 a, emulsion pumps 100 include pressure head 110, the cylinder head 120, cylinder with outlet 130 and facing 140.As shown in Figure 8 b, facing 140 has internal thread, and on the opening of container 200 Corresponding external screw thread is set, so as to the mode that facing 140 is threaded connection is connected to the opening of container 200 On.

One end of cylinder 130 is connected with facing 140, and the other end is then stretched into inside container.Emulsion pumps 100 In be additionally provided with piston rod 150, one end of piston rod 150 extends through the endoporus in cylinder head 120, and It is fixedly connected with pressure head 110, the other end then stretches into the inside of cylinder 130.The inside of piston rod 150 and pressure 110 communication.

When the product being received in a reservoir is distributed using people's pressing emulsion pumps, the air outside container will be logical Cross the air supply passage that is arranged in emulsion pumps 100 to enter in container, reduced because product is pumped out with compensating Volume.In general, between being formed between endoporus of the air supply passage by piston rod 150 and cylinder head 120 Gap is constituted.

Currently there are the emulsion pumps with water-inlet-proof function.The emulsion pumps of the water-inlet-proof are prevented from spray Water drenching or sewage are leak into container during the use of emulsion pumps from the neck of emulsion pumps, so as to avoid container Interior product is contaminated.

But, such water-inlet-proof emulsion pumps there is also vessel during use can be inhaled flat asking Topic.For more specifically, in order to reach good waterproof effect, it will usually by piston rod and cylinder head Gap between hole be designed to it is narrow, to prevent shower water or sewage from leaking into container by the gap In.But, on the other hand, the gap between the gentle inner hole of cylinder cover of piston rod becomes narrow, then anticipate Taste air supply passage becomes narrow, and this is resulted in during product is pumped out container, and extraneous air is not Can add in time in container.So, negative pressure is will result in container, so as to produce flat phenomenon is inhaled, As schematically shown in Fig. 8 b.

Even, as the negative pressure in container constantly rises, it eventually exceedes the suction of emulsion pumps, so as to lead Cause cannot pump out the product accommodated in container.

In addition to above reason, the product in container can also block air supply passage, especially in container In the case that product is more sticky.For example, in transportation, container is possible to horizontal, and is run Winnow with a dustpan.So, in container fluid or viscid product can flow into and stick to the interior of piston rod and cylinder head In gap between hole, so as to hinder the air outside container to supplement into container.

It can be seen that, for emulsion pumps, water-inlet-proof and preventing absorbing shrinkage are one group of demands for mutually restricting, to reality Now good water-inlet-proof effect, then require that the passage being in communication with the outside is narrow as much as possible, and so can make Container inhales flat problem becomes serious；And to solve the problems, such as that container inhales flat, then require to increase with the external world even Logical passage, and can so weaken the water-proof function of emulsion pumps.

Accordingly, it would be desirable to a kind of improved emulsion pumps, first, it can avoid container from being inhaled flat problem, enter one Step ground, makes the emulsion pumps have good water-inlet-proof function simultaneously.

The content of the invention

The present invention is made based on the problems of emulsion pumps of above prior art.The one of the present invention Individual purpose is to provide a kind of emulsion pumps, and it has good preventing absorbing shrinkage performance.The further purpose of the present invention It is to provide good water-inlet-proof function for emulsion pumps.

The above-mentioned purpose of the present invention realizes that the emulsion pumps include by a kind of emulsion pumps：Pressure head；Gas Cylinder；Cylinder head, cylinder head is arranged on cylinder；Piston rod；One end of piston rod extends through cylinder The endoporus of lid, and pressure head is fixedly attached to, the other end of piston rod extends to cylinder interior, and connects There is piston；Facing, facing connects with cylinders, and is connected on the opening using the container of emulsion pumps； Wherein, the piston bar body of piston rod includes Part I and Part II, when Part I is in cylinder When extending in the endoporus of lid, gap is formed between piston rod and cylinder head, outside air can Flow through the gap.

Further, when Part II extends in endoporus, formed between piston rod and cylinder head It is in sealing contact.

In the emulsion pumps with said structure, because the body part of piston rod includes that structure is different Part, and wherein at least one part is formed as, when this prolongs at least partially in the endoporus of cylinder head When stretching, the gap for air circulation, and at least another portion are formed between the gentle cylinder cap of piston bar body Divide and be formed as, when at least another part extends in the endoporus of cylinder head for this, in piston rod and cylinder Formed between lid in sealing contact.So, when during piston rod is in and pushes with resilience, mainly It is the extension in endoporus at least partially of piston rod, so as to deposit between the wall and piston rod of endoporus In gap, it is allowed to which air is filled into container, anti-flat effect can be thus played.

Further, by the way that Part II is arranged to, when the Part II extends in endoporus, Form in sealing contact between piston rod and cylinder head, be then capable of achieving water-inlet-proof function.Specifically, When the open position of piston rod movement to emulsion pumps, mainly described at least another part of piston rod Extend in endoporus, so, matched somebody with somebody by the interference between the wall of endoporus and the another part of piston rod Close and form sealing, to play a part of water-inlet-proof.

Therefore, by the emulsion pumps of the said structure of the present invention, preventing absorbing shrinkage and water-inlet-proof can simultaneously be met Requirement.

In one embodiment, Part I is minor diameter, and Part II is major diameter portion, its In, the external diameter of minor diameter less than the endoporus of cylinder head internal diameter, so as to work as minor diameter in endoporus During extension, gap is formed between piston rod and cylinder head, the external diameter in major diameter portion is equal or slightly larger than The internal diameter of endoporus, so as to when major diameter portion extends in endoporus, the shape between piston rod and cylinder head Into in sealing contact.

In another embodiment, at least one slit is formed with Part I, the slit is set It is set to, when Part I extends in endoporus, gap is formed by slit, also, Part II External diameter is equal or slightly larger than the internal diameter of endoporus, so as to when Part II extends in endoporus, in piston Formed between bar and cylinder head in sealing contact.

It is preferred that being formed with base flange in the bottom of piston rod.The external diameter of the base flange is more than interior The internal diameter in hole.So, base flange can play a part of stop part, prevent piston rod from traveling further into The motion of endoporus.

Further, the first sealing inclined-plane is formed with base flange, and it is downward in cylinder head bottom Extend and be formed with sleeve, the internal diameter of sleeve is more than the internal diameter of endoporus, and between sleeve and endoporus It is formed with the second sealing inclined-plane in stage portion, the second sealing inclined-plane has and matches with the first sealing inclined-plane Shape.

When piston rod movement to base flange contacts with the wall of endoporus, the first sealing inclined-plane will It is engaged with the second sealing inclined-plane, sealing is formed, so as to improve emulsion pumps in the close of open position Feng Xing.

In another preferably embodiment, at least one slit is provided with sleeve, at emulsion pumps When open position, at least one slit is in fluid communication with the balancing air holes on cylinder.

Container in such as transportation by it is horizontal when, the fluid or viscid product in container can lead to The balancing air holes crossed on cylinder are flowed into emulsion pumps.And by arranging at least one slit on sleeve, Then when emulsion pumps it is in an open position in case using when, the product in emulsion pumps can be via slit and balance Pore is back in container, so as to product can be avoided to block the gap for tonifying Qi.

It is preferred that the top of cylinder head is formed with reducing diameter part.When emulsion pumps are in an open position, should Reducing diameter part is engaged with the major diameter portion of piston rod, to provide further sealing property.

Description of the drawings

Fig. 1 is the sectional view of the emulsion pumps of the present invention, wherein, Fig. 1 a show the locking shape of the emulsion pumps State, and Fig. 1 b show the open mode of the emulsion pumps.

Fig. 2 a are the front views of the piston rod in the emulsion pumps of the present invention.

Fig. 2 b are the sectional views that the piston rod I-I along the line shown in Fig. 2 a is obtained.

Fig. 2 c are the stereograms of the piston rod shown in Fig. 2 a and 2b.

Fig. 3 a are the front views of the cylinder head in the emulsion pumps of the present invention.

Fig. 3 b are the sectional views that the cylinder head II-II along the line shown in Fig. 3 a is obtained.

Fig. 3 c are the stereograms of the cylinder head shown in Fig. 3 a and 3b.

Fig. 4 a show the sectional view of of the invention emulsion pumps of the pressure head in motion process, wherein, should Emulsion pumps are connected on container.

Fig. 4 b are the enlarged drawings of the part A in Fig. 4 a.

Fig. 5 a show the sectional view of the emulsion pumps of the invention in open mode.

Fig. 5 b are the enlarged drawings of the part B in Fig. 5 a.

Fig. 6 a show the sectional view of the emulsion pumps of the invention in horizontal state.

Fig. 6 b are the enlarged drawings of the part C in Fig. 6 a.

Fig. 7 a are the front views of the piston rod in the second embodiment of the emulsion pumps of the present invention.

Fig. 7 b are the longitudinal sectional views that the III-III along the line of piston rod shown in Fig. 7 a is obtained.

Fig. 7 c are the transverse sectional views that the IV-IV along the line of piston rod shown in Fig. 7 b is obtained.

Fig. 7 d are the stereograms of Fig. 7 a～piston rod shown in 7c.

Fig. 8 shows the sectional view of the emulsion pumps of prior art, and wherein Fig. 8 a show the lock of the emulsion pumps Determine state, and Fig. 8 b show the open mode of the emulsion pumps, and the emulsion pumps are connected with container.

Specific embodiment

The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It is to be appreciated that Shown in accompanying drawing is only presently preferred embodiments of the present invention, and it is not constituted to the scope of the present invention Limit.Those skilled in the art can be carried out on the basis of embodiment shown in the drawings to the present invention Various obvious modifications, modification, equivalence replacement, these all fall protection scope of the present invention it It is interior.

Here should also be noted that "up" and "down" used in text etc. is phase with regard to the term in direction Being vertically oriented for emulsion pumps are placed with, (i.e. emulsion pumps are configured to its axis direction and vertical direction It is consistent) and determine.

As seen in figure la and lb, emulsion pumps 1 of the invention include pressure head 10, cylinder head 20, piston Bar 30, cylinder 40 and facing 50.Cylinder head 20 has endoporus 21.In the assembled state, it is living One end of stopper rod 30 extends through the endoporus 21 of cylinder head 20, and is fixedly attached on pressure head 10.It is living The other end of stopper rod 30 is extended to inside cylinder 40, and is connected with piston 60.

Spring 70 is provided with cylinder 40, the spring 70 applies bias force to piston 60, will Piston 60 is biased (such as Fig. 1 b) together with piston rod 30 and pressure head 20 towards the open position of emulsion pumps 1. The helicitic texture of complementation, such as external screw thread and internal thread can be provided with pressure head 10 and cylinder head 20. By the helicitic texture, pressure head 10 can be fastened in cylinder head 20, so as to overcome the biasing of spring 70 Power and be located at the latched position (such as Fig. 1 a) of emulsion pumps 1.

Certainly, other known structure can be also taken to substitute above mentioned spring 70 and pressure head Helicitic texture between 10 and cylinder head 20.For example, bias force is applied using flexure strip, and pressure head Fastening means between 10 and cylinder head 20 can be engaging etc..

Fig. 2 a～2c respectively illustrates front view, profile and the solid of the piston rod 30 of emulsion pumps 1 Figure.As illustrated, piston rod 30 is followed successively by from top to bottom joint 31 and piston bar body 32.Joint 31 are engaged with the complementary structure in pressure head 10, for piston rod 30 to be connected into pressure head 10.Piston Bar body 32 extends through the endoporus 21 of cylinder head 20, and is located under the lock-out state of emulsion pumps 1 Inside cylinder 40.

In the emulsion pumps 1 of the present invention, the piston bar body 32 of piston rod 30 includes multiple diameters not Same part.For example, in the structure of the piston rod 30 shown in Fig. 2 a～2c, piston bar body 32 include minor diameter 321 and major diameter portion 322, and wherein minor diameter 321 is located at joint 31 and big Between diameter portion 322.The external diameter of minor diameter 321 is less than the internal diameter of the endoporus 21 of cylinder head 20, And the external diameter in major diameter portion 322 is then equal or slightly larger than the internal diameter of endoporus 21, so as to work as piston rod 30 When rising and making major diameter portion 322 enter endoporus 21, the interference engagement of major diameter portion 322 is to endoporus 21 In.

It is preferred that base flange 33 is also formed with the bottom of piston rod 30, the base flange 33 External diameter more than major diameter portion 322 external diameter, thus the internal diameter of the endoporus 21 also greater than cylinder head 20, So as to play a part of stop part.Further, sealing inclined-plane 34 can be formed with base flange 33.

Fig. 3 a～3c respectively illustrates front view, sectional view and the solid of the cylinder head 20 of emulsion pumps 1 Figure.As illustrated, being formed through the endoporus 21 of the extension of cylinder head 20 in cylinder head 20.As above institute State, the internal diameter of the endoporus 21 is more than the external diameter of the minor diameter 321 in the body of piston rod 30, but Equal to or slightly less than major diameter portion 322.

It is preferred that extend downwardly in the bottom of cylinder head 20 and form sleeve 22, the internal diameter of the sleeve More than the internal diameter of endoporus 21, so as to form stage portion between endoporus 21 and sleeve 22.Also, cover Cylinder 22 internal diameter also greater than the base flange 33 of piston rod 30 external diameter, so as to base flange 33 can Move to inside sleeve 22.It is corresponding with the sealing inclined-plane 34 in the base flange 33 of piston rod 30 Ground, is formed with shape and matches with sealing inclined-plane 34 at the stage portion between endoporus 21 and sleeve 22 Sealing inclined-plane 24.

By such structure, when piston rod 30 travels up to top dead centre, the bottom of piston rod 30 Sealing inclined-plane 34 on portion's flange 33 is engaged with the sealing inclined-plane 24 in cylinder head 20, is formed close Envelope.

In one preferably structure, at least one slit 23 is additionally provided with sleeve 22.Work as emulsion When pump 1 is in open mode, such as can into the product in the neck of emulsion pumps 1 in transportation It is back in container by the slit 23.

The operating principle of the emulsion pumps 1 of the present invention is illustrated below in conjunction with Fig. 4 a～6b.

Emulsion pumps 1 be in the lock state or in push or resilience during when, piston rod 30 Piston bar body 32 minor diameter 321 be located at cylinder head 20 endoporus 21 in.Now, due to The external diameter of minor diameter 321 is less than the internal diameter of endoporus 21, therefore in piston bar body 32 and endoporus 21 Between be formed with gap 3.Air outside container 2 can flow through the gap 3 such that it is able to by outside Air add to the inside of container 2 (see the arrow A1 in Fig. 4 a and 4b).

By reasonably arranging the external diameter of minor diameter 321 and the internal diameter of endoporus 21, piston rod sheet can be made Gap 3 between body 32 and endoporus 21 is sufficiently large, to guarantee that air can be added in time in container.

When emulsion pumps 1 it is in an open position, and piston rod 30 when traveling up to top dead centre (as schemed Shown in 5a and 5b), the major diameter portion 322 of piston rod 30 does with the inwall of endoporus 21 of cylinder head 20 Cooperation is related to, so as to form in sealing contact between the inwall of major diameter portion 322 and endoporus 21.So, Can prevent shower water or sewage from leaking into container between the endoporus of piston rod 30 and cylinder head 20.

It is preferred that reducing diameter part 211 can be formed with the upper end of endoporus 21, so as to be formed such as Fig. 5 b The sealing of S1 indications.Further, when piston rod 30 travels up to top dead centre, piston rod Sealing inclined-plane 34 in 30 base flange 33 is in sealing contact with the sealing inclined-plane 24 of cylinder head 20, The sealing of the S2 indications in so as to form Fig. 5 b, further to improve sealing effectiveness, there is provided more preferably Water-inlet-proof performance.

When emulsion pumps 1 in the state of such as transportation etc by it is horizontal when (as shown in Figure 6 a), Product in container can enter piston rod 30 and cylinder head for example, by the balancing air holes 41 on cylinder 40 In gap 3 between 20 endoporus 21, the arrow P1 indications in such as Fig. 6 b.When emulsion pumps 1 In open mode when, the slit 23 on the sleeve 22 of cylinder head 20 will be connected with balancing air holes 41. So, the product in emulsion pumps 1 is leak into before can be back to appearance via slit 23 and balancing air holes 41 In device (as indicated by the arrow P2 in Fig. 5 b).So, can prevent because product is in piston rod 30 And the delay between the endoporus 21 of cylinder head 20 and block gap 3.

Can see, by the emulsion pumps 1 with said structure, can simultaneously take into account preventing absorbing shrinkage performance With water-inlet-proof function.The structure is a kind of preferably structure.In the basic structure of the present invention, piston Bar 30 can not with the interference engagement of endoporus 21, but between its whole length and endoporus 21 keep Certain gap.For example, the external diameter of piston rod 30 can be constant, rather than as described above by It is divided into major diameter portion and minor diameter.By the gap, it can be ensured that the preventing absorbing shrinkage performance of emulsion pumps 1.

Another form of piston rod is included in the second embodiment of the emulsion pumps 1 of the present invention.Remove Outside this, the structure of the emulsion pumps 1 of second embodiment and the structure base of first embodiment described above This is identical.It is described more fully below structures different from first embodiment in second embodiment, and for Other identical structures, here is not repeated description.

Fig. 7 a～7d show the piston rod used in the emulsion pumps 1 of second embodiment front view, Longitudinal sectional view, transverse sectional view and stereogram.

As shown in Fig. 7 a～7d, piston rod 30 ' includes joint 31 ' and piston bar body 32 '.Piston rod Body 32 ' includes Part I 321 ' and Part II 322 '.Be formed with Part I 321 ' to A few slit 323 ', and the external diameter of Part II 322 ' is equal or slightly larger than the endoporus of cylinder head 20 21 internal diameter.As for the external diameter of Part I 321 ', it can be identical with the external diameter of Part II 322 ', Can also be different, it is greater than or less than the external diameter of Part II 322 '.

In this structure, when emulsion pumps 1 be in the lock state or in push or resilience during When, the endoporus 21 of the Part I 321 ' of the piston bar body 32 ' of piston rod 30 ' positioned at cylinder head 20 In.Now, the slit 323 ' on the Part I 321 ' of piston bar body 32 ' is arranged on there is provided for outer The gap that the air in portion passes through.In this structure, even if the external diameter of Part I 321 ' is more than endoporus 21 Internal diameter so that the state of the Part I 321 ' and endoporus 21 in interference engagement, but due to The presence of slit 323 ', air remains to flow through between Part I 321 ' and endoporus 21 and enter container In 2.

By the depth for reasonably arranging slit 323 ', can make between piston bar body 32 ' and endoporus 21 Gap 3 it is sufficiently large, to guarantee that air can be added in time in container.

And it is in an open position to work as emulsion pumps 1, and piston rod 30 ' is when traveling up to top dead centre, piston The Part II 322 ' of bar 30 ' and the inwall interference engagement of endoporus 21 of cylinder head 20.With first embodiment Situation it is identical, now, form in sealing contact between the inwall of Part II 322 ' and endoporus 21, So as to prevent shower water or sewage from leaking into container between the endoporus of piston rod 30 ' and cylinder head 20.

In a distressed structure of second embodiment, and above with respect to the phase described by first embodiment Similar, the external diameter of Part II 322 ' is also smaller than the internal diameter of endoporus 21.Similarly, Part I 322 ' external diameter is also smaller than the internal diameter of endoporus 21.Such structure first ensures that the energy for realizing preventing absorbing shrinkage Power.And the slit 323 ' by being arranged on Part I 321 ', can increase and allow air to flow into container In passage, so as to further improve preventing absorbing shrinkage ability.

Presently preferred embodiments of the present invention is described above.Those skilled in the art can be to these Preferably structure is modified.Also, on the premise of not conflicting mutually, the above is embodied as Feature in example can be in any combination.

Claims

1. a kind of emulsion pumps, the emulsion pumps include：

Pressure head；

Cylinder；

Cylinder head, the cylinder head is arranged on the cylinder；

Piston rod；One end of the piston rod extends through the endoporus of the cylinder head, and is fixedly connected To the pressure head, the other end of the piston rod extends to the cylinder interior, and is connected with piston；

Facing, the facing connects with the cylinders, and is connected to the container using the emulsion pumps Opening on；

Characterized in that,

The piston bar body of the piston rod includes Part I and Part II, when the Part I When extending in the endoporus of the cylinder head, formed between the piston rod and the cylinder head There is gap, outside air can flow through the gap.

2. emulsion pumps as claimed in claim 1, it is characterised in that when the Part II is described When extending in endoporus, form in sealing contact between the piston rod and the cylinder head.

3. emulsion pumps as claimed in claim 1 or 2, it is characterised in that the Part I is little Diameter portion, the Part II is major diameter portion, wherein, the external diameter of the minor diameter is less than described The internal diameter of the endoporus of cylinder head, so as to when the minor diameter extends in the endoporus, Form the gap between the piston rod and the cylinder head, the external diameter in the major diameter portion be equal to or Slightly larger than the internal diameter of the endoporus, so as to when the major diameter portion extends in the endoporus, in institute State and form described in sealing contact between piston rod and the cylinder head.

4. emulsion pumps as claimed in claim 1 or 2, it is characterised in that shape on the Part I Into there is at least one slit, the slit is configured to, when the Part I prolongs in the endoporus When stretching, the gap is formed by the slit, also, the external diameter of the Part II is equal to or bigger In the internal diameter of the endoporus, so as to when the Part II extends in the endoporus, in the work Form described in sealing contact between stopper rod and the cylinder head.

5. emulsion pumps as claimed in claim 1 or 2, it is characterised in that under the piston rod Portion is formed with base flange, and the external diameter of the base flange is more than the internal diameter of the endoporus, when the bottom When portion's flange contacts with the wall of the endoporus, the base flange prevents the further of the piston rod Into the motion of the endoporus.

6. emulsion pumps as claimed in claim 5, it is characterised in that be formed with the base flange First sealing inclined-plane, and, extend downwardly in the cylinder head bottom and be formed with sleeve, the set The internal diameter of cylinder is more than the internal diameter of the endoporus and the external diameter of the base flange, and in the sleeve and institute State and the second sealing inclined-plane is formed with the stage portion between endoporus, second sealing inclined-plane has and institute State the shape that the first sealing inclined-plane matches.

7. emulsion pumps as claimed in claim 5, it is characterised in that the sleeve is provided with least Individual slit, when the emulsion pumps are in the open position, at least one slit and the gas Balancing air holes on cylinder are in fluid communication.

8. emulsion pumps as claimed in claim 1 or 2, it is characterised in that the top of the cylinder head It is formed with reducing diameter part.