CN205819914U

CN205819914U - Piston type resists press pump stubbornly

Info

Publication number: CN205819914U
Application number: CN201620733228.6U
Authority: CN
Inventors: 陈刚
Original assignee: Hangzhou Kanghong Industry & Trade Co Ltd
Current assignee: Hangzhou Kanghong Industry & Trade Co Ltd
Priority date: 2016-07-08
Filing date: 2016-07-08
Publication date: 2016-12-21
Anticipated expiration: 2026-07-08

Abstract

The utility model discloses a kind of piston type and resist press pump stubbornly, including columnar shell and the button of hard, the upper end of suction pipe is fixed in shell, also includes inner cap, spring and piston；Described inner cap is socketed in the enclosure, and the lower half of its outer wall is bonding with the lower half of outer casing inner wall, is matched in clearance between the first half and the first half of outer casing inner wall of its outer wall, and described spring is located in this gap；Being provided with step surface between the first half and the lower half of described inner cap, described spring is connected between this step surface and button；Piston cavity it is provided with in described inner cap, adaptive axially slidable in piston cavity of described piston, and described piston fixes with button and is connected；Described suction pipe connects with piston cavity；The material of described piston is organic solvent-resistant material.The beneficial effects of the utility model are: corrosion-resistant, and service life is long.

Description

Piston type resists press pump stubbornly

Technical field

This utility model belongs to packaging material field, a kind of be used for drawing the piston type of liquid in bottle and resist pressure stubbornly Pump.

Background technology

The cosmetics of liquid, change reagent agent etc., be generally stored in the vial of sealing, the most on-demand taking-up A little.In order to control usage amount, reduce waste, it is possible to use the press pump of Manual press takes liquid.Chinese patent literature CN 201901320U, discloses " a kind of bottle cap with pressure head " on July 20th, 2011, including housing, housing upper end limited location Pressure head is limited in housing by snap ring, and the lower end of housing connects the inner cap matched with bottle, and connecting between pressure head and inner cap has Elastomer, the lower end of described elastomer connects has the dropper communicated therewith, the upper surface of described limited location snap ring to have oblique arc breach.Logical Cross pressing pressure head and be pressed down against elastic component so that inside the dropper being connected with elastic component, present negative pressure, in order to draw liquid.Should The press pump of class formation, relies primarily on the pressurized deformation of elastomer to produce pressure reduction, and then draws liquid.And elastomer generally uses Be the material of silicone rubber one class, such material, when being infiltrated in the organic solvent of higher concentration for a long time, can gradually be decomposed Dissolve, cause the flexibility missing of self, deform disabler, ultimately result in press pump and scrap.

Summary of the invention

This utility model technical issues that need to address are, existing press pump is the most corrosion-resistant, and service life is short, thus provides one Plant corrosion resistant piston type and resist press pump stubbornly, can have the longest service life.

To achieve these goals, this utility model adopts the following technical scheme that a kind of piston type resists press pump stubbornly, including circle The shell of tubular and the button of hard, the upper end of suction pipe is fixed in shell, also includes inner cap, spring and piston；Described inner cap In the enclosure, the lower half of its outer wall is bonding with the lower half of outer casing inner wall in socket, the first half of its outer wall and outer casing inner wall Being matched in clearance between the first half, described spring is located in this gap；It is provided with platform between the first half and the lower half of described inner cap Terrace, described spring is connected between this step surface and button；Be provided with piston cavity in described inner cap, described piston adaptive In piston cavity axially slidable, and described piston and button are fixing is connected；Described suction pipe connects with piston cavity；Described piston Material be organic solvent-resistant material.

Using the elastic material of silicone rubber one class in tradition press pump, the deformation by elastic material forms draught head, from And draw liquid.And the corrosion of this type of material not organic solvent-resistant.If solving corrosion resistant problem it is necessary to change material；As The material that fruit is changed does not has good elasticity, then also need to structurally improve, use other method instead to manufacture gas Pressure reduction.To this end, the technical program devises an inner cap in the enclosure, inside cover and devise piston cavity, and devise LDPE The piston of material, piston is axially movable in piston cavity.Piston is attached on button, when overcome the elasticity of spring by Lower button, descent of piston, the gas in piston cavity is discharged；Now release button, spring reset, drive piston together on button Up, piston cavity internal gas pressure reduces, and just can draw liquid from the straw end being connected to piston cavity.Piston use is resistance to be had The material of machine solvent is made, and can keep not corroded by organic solvent for a long time, therefore can ensure that the service life of whole press pump It is greatly prolonged.Such design, the flexible package punch of more especially suitable bigger specification, or the liquid bag that the time of use is longer Dress, or the flexible package punch of the organic solvent containing higher concentration.

As preferably, the material of described piston is LDPE.LDPE, i.e. Low Density Polyethylene, this material absorbs water hardly, changes Stability is outstanding, as the most stable to acid, alkali, salt, organic solvent, is highly suitable as producing the material of piston.

As preferably, the side-wall outer side face of described piston is the indent arc surfaces of revolution.It is interior by the side-wall outer side face of piston The arcs of recesses surfaces of revolution, can make full use of the micro-elastic of LDPE material, between strengthening piston side wall and piston cavity inwall Sealing condition, contribute to acquisition satisfaction takes liquid effect.

As preferably, the inside sidewalls face of described piston is parallel to lateral surface.The sidewall design of piston is become a centre The thin-walled stuck up outside the upper and lower two ends of indent, can farthest utilize it elastic, it is thus achieved that better seal.

As preferably, the inner side of described button is provided with connection handle, and the downside end of connection handle abuts the upper surface of piston；Even Connecing handle and be provided with card T-Ring, described piston is provided with buckling groove, and card T-Ring is connected with buckling groove adaptation, is connected with button by piston Together.Being abutted with piston upper surface by connection handle, the action making button down press is directly delivered on piston, and effect is direct Significantly.Use buckling groove coordinates with card T-Ring, it is to avoid separate with piston during button upwards resilience.

As preferably, what the lower end of described inner cap downwardly extended is provided with suction pipe installation pipe, and described suction cover is connected on suction pipe peace Outside tubulature.This programme devises suction pipe exclusively for inner cap and installs pipe, is installed on pipe at suction pipe by suction cover, can protect in use The position holding suction pipe is stable, can be with operation convenient for assembly.

As preferably, the outside of described suction pipe installation pipe is provided with a circle sealing ring of protrusion, the shape of cross section of sealing ring For arc arch outwardly, and the inwall tight fit of sealing ring and suction pipe.Suction pipe is installed and is provided with a circle sealing ring, Ke Yibang on pipe Help suction pipe to install between pipe and suction pipe and realize better seal, thus promote the imbibition effect of press pump.

As preferably, described suction pipe installs the anti-slip ring of circle being additionally provided with protrusion on the outside of pipe, the cross section of anti-slip ring It is shaped as the parallelogram of oblique top, and the inwall interference fit of anti-slip ring and suction pipe.Suction pipe installation pipe is arranged anti- Slip ring, is used for preventing suction pipe and moves back to downslide.

In sum, the beneficial effects of the utility model are: corrosion-resistant, and service life is long.

Accompanying drawing explanation

Fig. 1 is axial sectional view of the present utility model,

Fig. 2 is the axial sectional view of button,

Fig. 3 is the axial sectional view of piston.

Wherein: 1 shell, 2 buttons, 3 suction pipes, 4 inner caps, 5 springs, 6 pistons, 7 pads, 21 connection handles, 41 step surfaces, 42 live Plug cavity, 43 suction pipes install pipe, 61 buckling grooves, 211 card T-Rings.

Detailed description of the invention

With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings.

Embodiment as shown in Figure 1, resists press pump stubbornly for a kind of piston type, and this kind of piston type is resisted press pump stubbornly and included columnar Shell 1, is bonded with inner cap 4 in shell.The upper surface of shell is provided with containing mouth, and the lower end of button 2 is provided with train of dress type opening, both Adaptive connects together, by the up final limit of button at the end face of shell.Inner cap includes the top half that diameter is less With the latter half being relatively large in diameter, the most radially it is provided with step surface 41.Wherein, the latter half of interior cover outer wall fastens It is bonded on the latter half of outer casing inner wall, between being provided with between top half and the top half of outer casing inner wall of interior cover outer wall Gap, is socketed with spring 5 in this gap, spring is connected between the step surface of inner cap and the train of dress type opening of button.In inner cap Between, be provided with piston cavity 42 vertically, piston 6 adaptation of LDPE material interior along axis slidably.As in figure 2 it is shown, button The most straight down be provided with connection handle 21, connection handle devises the card T-Ring 211 that a circle is protruding.As shown in Figure 3.On piston It is provided with buckling groove 61.The lower side of connection handle is connected on the upper surface of piston, and what buckling groove was adaptive with card T-Ring is connected to one Rise, piston is fixed together with button, make piston can synchronize up and down with button.The shape of the sidewall of piston is in the same direction double Indent arc rotary body, i.e. lateral surface are also indent arcwall faces, and medial surface is also indent arcwall face, two arcs be all up and down outside Convex middle indent, makes the sidewall of piston form the shape of indent in the middle of the evagination of two ends, the two ends of evagination and the sidewall of piston cavity Contact, the mid portion of indent forms certain elasticity, the close contact to the sidewall of piston cavity of the two ends of holding evagination, carries High leakproofness.Lower section in the middle part of inner cap, is additionally provided with the suction pipe downwardly extended and installs pipe 43, and suction pipe is installed on the outer wall of pipe, top Being provided with a circle sealing ring, the shape of cross section of sealing ring is arc arch outwardly；Lower section is provided with an anti-slip ring of circle, the horizontal stroke of anti-slip ring Cross sectional shape is the parallel deformation of oblique top.The upper end of suction pipe 3 is socketed in suction pipe and installs outside pipe, sealing ring and the inwall of suction pipe The inwall interference fit of tight fit, anti-slip ring and suction pipe.It is close to the position of the lower surface of inner cap, is connected with pad 7, in the middle of pad The aperture of perforate is adaptive with the external diameter of suction pipe.

A kind of piston type of this example resists press pump stubbornly, and when user overcomes the elastic force pressing button of spring, button drives lives Fill in descending, by piston cavity to suction pipe, air is discharged；Now decontroling spring, button is under the promotion of the reset force of spring Back up into initial position, driving piston stroking upward, in piston cavity, pressure is less than external air pressure, liquid just opening from suction pipe lower end Mouth is inhaled into suction pipe；The most again press button, the liquid in suction pipe can be extruded.A kind of piston type of this example resists pressure stubbornly Pump, in the way of piston movement, the mode of elasticity of substitution part deformation manufactures pressure differential, with the LDPE material that organic solvent resistance is strong Matter substituted for silicon rubber etc. tradition material, have anticorrosive, service life length advantage.

Claims

1. piston type resists a press pump stubbornly, and including the button (2) of columnar shell (1) and hard, the upper end of suction pipe (3) is fixed In shell, it is characterized in that, also include inner cap (4), spring (5) and piston (6)；Described inner cap is socketed in the enclosure, its outer wall Lower half bonding with the lower half of outer casing inner wall, join for gap between the first half and the first half of outer casing inner wall of its outer wall Closing, described spring is located in this gap；Being provided with step surface (41) between the first half and the lower half of described inner cap, described spring supports It is connected between this step surface and button；Be provided with piston cavity (42) in described inner cap, described piston adaptive in piston cavity Axially slidable, and described piston and button are fixing is connected；Described suction pipe connects with piston cavity；The material of described piston is resistance to Organic solvent material.

A kind of piston type the most according to claim 1 resists press pump stubbornly, it is characterized in that, the material of described piston is LDPE.

A kind of piston type the most according to claim 1 and 2 resists press pump stubbornly, it is characterized in that, the side-wall outer side face of described piston For the indent arc surfaces of revolution.

A kind of piston type the most according to claim 3 resists press pump stubbornly, it is characterized in that, the inside sidewalls face of described piston is parallel In lateral surface.

A kind of piston type the most according to claim 1 and 2 resists press pump stubbornly, it is characterized in that, the inner side of described button is provided with even Connecing handle (21), the downside end of connection handle abuts the upper surface of piston；Connection handle is provided with card T-Ring (211), on described piston Being provided with buckling groove (61), card T-Ring is connected with buckling groove adaptation, is linked together with button by piston.

A kind of piston type the most according to claim 1 and 2 resists press pump stubbornly, it is characterized in that, the lower end of described inner cap is to downward Pipe (43) installed by the suction pipe that is provided with stretched, and described suction cover is connected on suction pipe and installs outside pipe.

A kind of piston type the most according to claim 6 resists press pump stubbornly, it is characterized in that, described suction pipe is installed the outside of pipe and is provided with The circle sealing ring protruded, the shape of cross section of sealing ring is arc arch outwardly, and the inwall tight fit of sealing ring and suction pipe.

A kind of piston type the most according to claim 6 resists press pump stubbornly, it is characterized in that, described suction pipe is installed and gone back on the outside of pipe Being provided with an anti-slip ring of circle of protrusion, the shape of cross section of anti-slip ring is the parallelogram of oblique top, and anti-slip ring and suction pipe Inwall interference fit.