CN1652880A

CN1652880A - Fluid dispenser pump

Info

Publication number: CN1652880A
Application number: CN03811335.XA
Authority: CN
Inventors: L·珀蒂
Original assignee: Valois SAS
Current assignee: Aptar France SAS
Priority date: 2002-04-17
Filing date: 2003-04-10
Publication date: 2005-08-10
Anticipated expiration: 2023-04-10
Also published as: WO2003086648A1; JP4369760B2; EP1497037B1; DE60302056T2; FR2838787B1; FR2838787A1; CN1329126C; JP2005527353A; AU2003262151A1; EP1497037A1; DE60302056D1

Abstract

The invention relates to a distribution pump for a fluid product with manual operation, comprising a pump body (10) with a pump chamber (20). Said pump chamber (20) is defined between an inlet check valve (30) and an outlet check valve (40) with a piston (50) running in said pump body (10), between a rest position and a distribution position, for distribution of the product contained in the pump chamber. Said piston (50) is connected, particularly in a monobloc manner, to an operating shaft (60), comprising an ejection channel (65). The inlet non-return valve (31) comprises a non-return valve element (31) which may be displaced within the body of the pump (10) and which cooperates with said pump body (10) or an element fixed to said pump body to define the opening and closing positions for said inlet non-return valve (30). Said outlet non-return valve (40) comprises an outlet non-return valve element (41) which may be displaced within the pump body (10) and cooperates with the operating shaft (60) or an element fixed to said operating shaft to define the opening and closing positions of said outlet non-return valve (40), characterized in that on operation said outlet non-return valve (40) is forced to the closed position thereof by the pressure of the product contained within the pump chamber (20). The outlet non-return valve element (41) is displaced towards the opening position of the outlet non-return valve (40) by said inlet non-return valve element (31) when the piston (50) arrives in the distribution position thereof.

Description

Fluid product dispensing pump

Technical field

The present invention relates to a kind of manual fluid product dispensing pump, and a kind of device fluid dispensing product with this pump.

Background technology

What known is, a fluid product dispensing pump generally comprises a pump housing, and a piston slides between a resting position and a distribution locations in the pump housing.When pump was dosimeter, when promptly its each action distributed accurate with identical dosage, the pump housing can comprise a general pump chamber that forms between an inlet valve and outlet valve.In this case, the leakage before the release, the sealing at outlet valve place is very important during the action, same, the sealing at inlet valve place also should be best, avoids the product in the pump chamber to be back to holder when action.Another problem that may propose is starting, promptly discharges the air in the pump chamber before the action first of pump.In some pump, air passes outlet valve and discharges to the direction of dispensing orifice.When distributor comprised a closeouts at the dispensing orifice place, when particularly this closeouts can not be discharged air when starting, this method was not that total energy adopts.Another kind method is that a hole is set in the pump housing, and passes this hole and discharge air.But this method causes the device of closing this hole after the starting need be set, and this may make the pump structure more complicated.

Summary of the invention

The purpose of this invention is to provide a kind of fluid product dispensing pump that does not have above-mentioned shortcoming.

Therefore, the purpose of this invention is to provide the complete sealed fluid flow product dispensing pump of outlet valve and inlet valve place during a kind of action that guarantees pump, eliminate all danger that the product in the pump chamber leaks and refluxes during moving, therefore guarantee the accuracy and the repeatability of dosage.

The present invention also aims to provide a kind of fluid product dispensing pump, this pump guarantees that in simple mode very this pump starts easily, even when this device comprises the pump that has a closeouts.

The present invention also aims to provide a kind of manufacturing and assembling all not only simple but also cheap this fluid product dispensing pump.

Therefore, theme of the present invention is a manual fluid product dispensing pump, this pump comprises a pump housing that comprises a pump chamber, described pump chamber is limited between an inlet valve and the outlet valve, a piston slides between a resting position and a distribution locations in the described pump housing, so that divide the product that is fitted in the pump chamber, described piston is connected with an actuator lever with a passing away in the mode of integral body, described inlet valve has an inlet valve part, can in the pump housing, move and cooperate with part that the described pump housing or one link to each other with the described pump housing, so that limit the open position and the closed position of described inlet valve, described outlet valve has an outlet valve part, can in the pump housing, move and cooperate with part that described actuator lever or one link to each other with described actuator lever, so that limit the open position and the closed position of described outlet valve, this pump is characterised in that, during action, described outlet valve is tended to its closed position by the product pressure in the pump chamber, when piston reached its distribution locations, described outlet valve part was shifted to the open position of outlet valve by described inlet valve part.

Advantageously, described inlet valve part comprises that a hollow shaft is to lower sleeve, this sleeve slides around a hollow tube axial that links to each other with the pump housing in the mode of sealing in the closed position of described inlet valve, open position at described inlet valve, the lower end of described lower sleeve and the upper end of described tube axial separate, so that limit a product channels of leading to pump chamber.

Advantageously, the described tube axial of the pump housing has one or more radial projection, and when moving for the first time, projection cooperates with the lower end of the described lower sleeve of inlet valve part, so that open a passing away of the air that comprises in the pump chamber, with priming pump.

Advantageously, described inlet valve part has an axial hollow upper bush, its top edge forms an inside radially convex shoulder, and this upper bush is slidingly installed around described outlet valve part, between two of described outlet valve part downward convex shoulders in outside footpath and last convex shoulder.

Advantageously, when its distribution locations of piston arrives, the described top edge of upper bush cooperates with the described convex shoulder down of outlet valve part, so that open described outlet valve.

Advantageously, behind the indoor product of excavationg pump, the described top edge of upper bush cooperates with the described convex shoulder of going up of outlet valve part, so that close described outlet valve again.

Advantageously, a spring is between the pump housing and outlet valve part, and described spring tends to its open position with described inlet valve part, and piston is tended to its resting position.

Theme of the present invention also is a device fluid dispensing product with a pump defined above.

Description of drawings

By below with reference to the accompanying drawing that provides as non-limiting example, to the detailed description of two embodiment of the present invention, other features and advantages of the present invention will be clearer, and accompanying drawing is as follows:

-Fig. 1 is the cross sectional representation according to the pump of first embodiment of the invention, and this pump is in resting position;

-Fig. 2 is in similarly scheming with Fig. 1 of start position;

-Fig. 3 is in similarly scheming with Fig. 1,2 of distribution locations;

-Fig. 4 is the cross sectional representation according to the pump of second embodiment of the invention, and this pump is in resting position;

-Fig. 5 is in similarly scheming with Fig. 4 of start position;

-Fig. 6 is in similarly scheming with Fig. 4,5 of distribution locations.

The specific embodiment

With reference to accompanying drawing, pump of the present invention has a pump housing 10, and a piston 50 slides between a resting position (being shown in Fig. 1 and 4) and a distribution locations (being shown in Fig. 3 and 6) in the pump housing.Piston 50 preferably is connected with an actuator lever 60 in the mode of integral body, and for example the user applies an axial force by a button or a dispensing head (not shown) on actuator lever 60.Actuator lever 60 can be hollow, and generally comprises the passing away 65 that can discharge product.The pump housing 10 comprises a pump chamber 20 that forms between an inlet valve 30 and outlet valve 40.Inlet valve 30 comprises the inlet valve part 31 or the part that links to each other with the pump housing 10 that cooperate with the pump housing 10, so that form the open position and the closed position of described inlet valve 30.Similarly, outlet valve 40 comprises an outlet valve part 41 (or a part that is connected with actuator lever 60) that cooperates with actuator lever 60, so that form the opening and closing position of outlet valve 40.Inlet valve part 31 and outlet valve part 41 can move in the pump housing 10.Pump of the present invention can be installed on the holder (not shown) by a retainer ring 1, and retainer ring 1 can be any kind, particularly screw-in, Embedded or snap-in.A general sealing gasket 5 is inserted between the top edge and retainer ring 1 of holder (not shown).Then a dispensing head or button groups are contained on the pump,, therefore form a manual device fluid dispensing product so that make the pump action.

According to the present invention, the pressure that comprises product in the pump chamber 20 is outlet valve 40 its closed positions of trend.Guarantee like this in the course of action of pump that without any the danger of leaking, in case because the user makes the pump action, just produce a pressure pump chamber 20 in, this pressure is outlet valve 40 its closed positions of trend, so assurance optimal seal herein.Similarly, inlet valve part 31 cooperates with the part of the pump housing 10, and this part of the pump housing makes the product pressure in the pump chamber 20 also can improve the sealing of inlet valve 30.When piston 50 reached its distribution locations, inlet valve part 31 cooperated with outlet valve part 41, made outlet valve part 41 mechanically shift to the open position of outlet valve 40.During the release of pump, the machinery of outlet valve is opened the each action that guarantees pump and is distributed all dosage.

Advantageously, inlet valve part 31 comprises an axial hollow lower sleeve 32 and an axial hollow upper bush 34.Axially lower sleeve 32 slides around a hollow tube axial that links to each other with the pump housing 10 12 in the mode of sealing.As shown in the figure, tube axial 12 can be as a whole with 10 one-tenth of the pump housings, and concentric with the pump housing in the pump housing in its lower edge.Realize sealing at 33 places, lower end of described lower sleeve 32, therefore improved sealing in the process that the product pressure pump chamber 20 in moves pump, product be distributed in inlet valve part 31 described lower sleeve 32 around.In the resting position of pump, shown in Fig. 1,4, the upper end 13 of described tube axial 12 is left in the lower end 33 of described lower sleeve 32, this just defines the open position of inlet valve 30, has opened the passage of a fluid product to pump chamber 20.

Advantageously, the described tube axial 12 of the pump housing 10 can comprise one or more radial projection 14 that its underpart forms that are preferably in, and when pump moved for the first time, radial projection 14 cooperated with the lower end 33 of the described lower sleeve 32 of inlet valve part 31.Like this can be with simple and reliable mode priming pump, air in the pump chamber 20 is passed prolong pipe to be discharged in the holder (not shown).Fig. 2,4 illustrates the start position, and in this position, the lower end 33 of lower sleeve 32 cooperates with the described radial projection 14 of tube axial 12.Can open the passage of an air in the discharge pump chamber 20 like this.Certainly, after the pump starting, pump chamber 20 is full of the fluid product from the holder (not shown).From this constantly, be incompressible owing to fluid product is opposite with air, inlet valve part 31 no longer reaches the position that its lower end 33 can cooperate with the described radial projection 14 of tube axial 12 forever.In fact, before the lower limb 33 of described inlet valve part 31 arrived described radial projection 14, delivery side of pump valve 40 was mechanically opened by described inlet valve part 31 all the time.Therefore the existence of these radial projection 14 can priming pump, but there is not the danger of any leakage when moving later in pump, particularly in sealing place of inlet valve 30.Therefore, the invention provides a kind of simple and reliable starting, air passes and prolongs the feasible pump of the present invention that can use the closeouts that has any kind of pipe discharge, does not allow to discharge the closeouts of air during comprising starting.

The axial hollow upper bush 34 of inlet valve part 31 comprises a top edge 35 that forms an inside radially convex shoulder.This top edge 35 is preferably in modes of sealing, be slidingly installed around a part that is limited to the described outlet valve part 41 between two downward convex shoulders in outside footpath and last convex shoulder 45 and 46.Therefore, when piston 50 reached its distribution locations, the top edge 35 of upper bush 34 cooperated with the described convex shoulder 45 down of outlet valve part 41, so that mechanically open described outlet valve 40.In fact, because the diameter between piston 50 and the inlet valve part 31 is poor, during action, inlet valve part 31 moving in the pump housing 10 is faster than piston 50, the top edge 35 of inlet valve part 31 is slided around outlet valve part 41,, and mechanically open outlet valve 40 so that arrive described convex shoulder 45.

In the embodiment shown in Fig. 1-3, after entering into products in the pump chamber 20 and making the pump action, when piston 50 when its distribution locations is returned its resting position, outlet valve by band automatically to its closed position.As modification, the embodiment of Fig. 4-6 makes the top edge 35 of the upper bush 34 of inlet valve part 31 cooperate with the described convex shoulder 46 of going up of outlet valve part 41, so that mechanically close described outlet valve 40 again behind the product in discharging pump chamber 20.Certainly, this feature of mechanically closing outlet valve 40 again goes for described first embodiment of Fig. 1-3 fully.

The spring 70 of the back-moving spring of a formation pump is between the pump housing 10 and inlet valve part 31.Spring 70 is inlet valve 30 its open positions of trend, piston 50 its resting positions of trend.

Therefore, the invention provides a reliable pump of insurance, the danger of any leakage during this pump is avoided moving can be insured starting reliably when pump moves for the first time, particularly the manufacturing of this pump and assembling are simple, cost is low, because it includes only very small amount of component part.In fact, in order to obtain having the pump of all these advantages, the present invention has only used six parts, be the pump housing 10, inlet valve part 31, outlet valve part 41, back-moving spring 70, piston 50 and metal ferrules 80 (it is the stop feature that is enclosed within the top edge of the pump housing 10, and limits the resting position of piston 50).

Although invention has been described with reference to two specific embodiments of the present invention, those skilled in the art can carry out various modifications to the present invention in the scope of the present invention that does not exceed the claims qualification.

Claims

1. hand fluid product dispensing pump, it has a pump housing (10) that comprises a pump chamber (20), described pump chamber (20) is limited between an inlet valve (30) and the outlet valve (40), a piston (50) is in the described pump housing (10), between a resting position and a distribution locations, slide, so that the product that holds in the distribution pump chamber, described piston (50) especially is connected with an actuator lever (60) with passing away (65) in the mode of integral body, described inlet valve (30) has an inlet valve part (31), the inlet valve part can move in the pump housing (10) and cooperate with the described pump housing (10) or a part that links to each other with the described pump housing, so that limit the opening and closing position of described inlet valve (30), described outlet valve (40) has an outlet valve part (41), the outlet valve part can move in the pump housing (10) and cooperate with described actuator lever (60) or a part that links to each other with described actuator lever, so that limit the opening and closing position of described outlet valve (40); It is characterized in that, when action, described outlet valve tends to its closed position by the pressure of the product in the pump chamber (20), and when piston (50) arrived its distribution locations, described outlet valve part (41) was shifted to the open position of outlet valve (40) by described inlet valve part (31).

2. pump as claimed in claim 1, it is characterized in that, described inlet valve part (31) has an axial hollow lower sleeve (32), closed position in described inlet valve (30), described lower sleeve slides around a hollow tube axial (12) that links to each other with the pump housing (10) in the mode of sealing, open position in described inlet valve (30), the lower end (33) of described lower sleeve (32) separates with the upper end (13) of described tube axial (12), so that limit a product channels towards pump chamber (20).

3. pump as claimed in claim 2, it is characterized in that, the described tube axial (12) of the pump housing (10) has one or more radial projection (14), when moving for the first time, described projection cooperates with the lower end (33) of the described lower sleeve (32) of inlet valve part (31), so that open a passing away of the air in the pump chamber (20), with priming pump.

4. as one of above-mentioned claim described pump, it is characterized in that, described inlet valve part (31) has an axial hollow upper bush (34), its top edge (35) forms an inside radially convex shoulder, and upper bush (34) is slidingly installed around described outlet valve part (41), between two downward convex shoulders in outside footpath and last convex shoulder (45,46) of described outlet valve part (41).

5. pump as claimed in claim 4 is characterized in that, when piston (50) arrived its distribution locations, the described top edge (35) of upper bush (34) cooperated with the described convex shoulder (45) down of outlet valve part (41), so that open described outlet valve (40).

6. as claim 4 or 5 described pumps, it is characterized in that behind the product in discharging pump chamber (20), the described top edge (35) of upper bush (34) cooperates with the described convex shoulder (46) of going up of outlet valve part (41), so that close described outlet valve (40) again.

7. as one of above-mentioned claim described pump, it is characterized in that, a spring (70) is positioned between the pump housing (10) and the inlet valve part (31), and described spring (70) tends to its open position with described inlet valve (30), and piston (50) is tended to its resting position.

8. device fluid dispensing product is characterized in that, it has the described pump of one of aforesaid right requirement.