CN1205274A - Liquid containment and dispensing device with improved flow control valve - Google Patents

Abstract

An ink containment and dispensing device for an ink-jet printer is provided with a main reservoir in the form of a flexible pouch, which is typically maintained at ambient pressure. The main reservoir is coupled to a variable volume chamber via a one-way valve which allows the flow of ink from the reservoir to the chamber and prevents the flow of ink from the chamber to the reservoir. The chamber is coupled to a fluid outlet, which is normally closed to prevent the flow of outward ink. However, when the ink supply is installed in a printer, the fluid outlet establishes a fluid connection between the chamber and the printer. The chamber is part of a pump provided with the ink supply that can be actuated to supply ink from the reservoir to the printer. The pump has a linearly acting pumping member and a flexible diaphragm that overlies the pumping member, the diaphragm being impervious to the transmission of oxygen and moisture therethrough to prevent degradation of the ink within the chamber.

Description

Have the Sheng liquid and the pumping equipment that improve control valve for fluids

The application is aimed at also undelegated U.S. Patent application NO.08/429, the improvement that invention disclosed is carried out in 987, and I am a co-inventor of this application.

The present invention relates to a kind and contain liquid device, this Sheng liquid device has a self contained pump that is used for carrying out with the predetermined of low dose discharge opeing.Particularly, the present invention relates to a kind of replaceable Sheng liquid device of containing liquid device in the past, this Sheng liquid device is applied to ink-jet printer, and this Sheng liquid device includes an ink-feeding device, in case with self contained pumping excitation, just can be used for stamping ink is discharged to printhead.

Examining name that dagger-axe (Bruce Cowger) and this base of the graceful POLO of promise (Jr.Norman.Pawlowski) submit to by Bruce is called in the patent application of unauthorized still of " ink-feeding device of ink-jet printer " and has described a kind of ink-jet printer, this ink-jet printer separates with the printer writing brush, after ink-feeding device usefulness is done, do not need to replace the printer writing brush, only need to replace this ink-feeding device.Ink-feeding device in the foregoing U.S. Patent application comprises a self contained pump installation that is used for discharging from pump chamber fluid, in an embodiment of this pump installation, has described a bellows pump.Yet bellows pump needs the extensional surface of a sizable semi-rigid material, and oxygen and moisture content passes the parts of bellows pump at high speed, thereby bellows pump is exerted an influence.Oxygen and/or moisture content this passes through motion and may cause the prepared Chinese ink in the ink-feeding device to decompose, and particularly in the printer for non-frequent use, this situation is particularly serious.And bellows is easy to leak in the position that is connected with another part of ink-feeding device.According to the still undelegated patent application NO.08/429 of the aforesaid U.S., 987, use these problems and other problem that bellows produced, can solve by utilizing a pumping installations, this pumping installations has a rigidity perisporium, and this rigidity perisporium base arrangement best and ink-feeding device forms one; This pumping installations has a linear pump actuating member, and this linear pump actuating member can move in the pump chamber that is surrounded by rigid walls, is used for the prepared Chinese ink in the pump chamber is pressurizeed; The moisture content of a flexibility and oxygen impermeable membrane, this impermeable membrane is sealed to the edge of perisporium continuously and covers pumping action spare with heat.

According to aforementioned series number is NO.08/429, the ink-feeding device of 987 U.S. Patent application uses the check valve of the flapper valve form of a thin layer, flexibility, this check valve utilization stake adds heat fixation (heat staked) to base plate, in discharge opeing circulation, in case be used for preventing that prepared Chinese ink is back to the China ink bag from pump chamber after prepared Chinese ink pressurizeed.Yet, need heat check valve when being fixed to check valve on the base plate, this may cause the permanent deformation of check valve, and the result makes the suppression performance of check valve in the discharge opeing circulation reduce greatly.Yet, have been found that, the check valve of a suitable flapper valve form is provided according to some embodiment of the present invention, and do not need flapper valve utilization stake heating is fixed on the base plate, just push towards base plate by a spring handle flapper valve, this spring may have the version of the register of the base plate that is sealed with flapper valve, perhaps departs from the form of this base plate opening.Also find, according to another one embodiment of the present invention, the check valve of a suitable form can be a spring bias voltage or the control ball that rotates freely, this control ball optionally seals pump chamber, thereby in a pump circulation, stop prepared Chinese ink to be back to the China ink bag, and when a pump circulation is ended, allow prepared Chinese ink to flow into pump chamber from pump chamber.

Therefore, first target of the present invention provides improved Sheng liquid and pumping equipment.Another corresponding with it target of the present invention provides one aforementioned means is carried out improved device, and this device should be used to contain liquid and discharge opeing in ink-jet printer.

Particularly, second target of the present invention provides improved Sheng liquid and pumping equipment, and this pumping equipment has a check valve, utilizes this check valve to prevent that liquid is back in the China ink bag that fills prepared Chinese ink in the pump circulation.Another corresponding with it target of the present invention provides a kind ofly carries out improved ink supply and pumping equipment to aforementioned means, and this device can be used for the Sheng China ink and the venting of ink-jet printer.

In order to understand the present invention and goal of the invention thereof better, see also accompanying drawing and following concise and to the point description of drawings thereof, the detailed description of most preferred embodiment of the present invention and additional claims.

Fig. 1 is a side view of containing liquid and pumping equipment according to one embodiment of the present of invention.

Fig. 2 is the decomposition view of the device of Fig. 1;

Fig. 3 is the Fig. 1 of the 3-3 line gained in Fig. 1 and the plan view of the device among Fig. 2;

Fig. 4 is the 4-4 line in Fig. 5, the plan view of a member among the presentation graphs 1-3;

Fig. 5 is the side view of the member of Fig. 4;

Fig. 6 be among Fig. 5 along the 6-6 line, the plan view of the member among presentation graphs 4 and Fig. 5;

Fig. 7 is the part decomposition view of the 7-7 line in Fig. 3 of an amplification;

Fig. 8 is the part decomposition view of the part of the device among Fig. 1-7;

Fig. 9 is a partial view that is similar to Fig. 8, the relation each other after the element assembling in the presentation graphs 8;

Figure 10 is the part plan view of another embodiment of the part of Sheng liquid among Fig. 1-9 and pumping equipment;

Figure 11 is along the parts sectional view of 11-11 line among Figure 10;

Figure 12 is the part front view of the 3rd embodiment of the part of Sheng liquid among Fig. 1-9 and pumping equipment, and wherein part is a profile;

Figure 13～18 expression the present invention and Figure 12 be the view of other embodiment similarly.

Represent with mark 10 in Fig. 1 according to Sheng China ink of the present invention and ink discharging device, in the US patent application 08/329,987 in front this device is described.This device 10 has a hard containment vessel 12, and this containment vessel has a flexible China ink bag 14 that is used to contain China ink.Containment vessel 12 is connected on the base plate 16, and this containment vessel 12 is holding a pump 18 and a fluid issuing 20.An over cap 22 is connected on the base plate 16, and label 24 is bonded to the outer surface on the containment vessel 12, and this label is secured together containment vessel 12, base plate 16 and over cap 22.Over cap 22 has a through hole, and this through hole allows contact pump and fluid issuing.

This device 10 is suitable for being inserted into removedly in bracing frame (docking bay) (not shown) of ink-jet printer.When device 10 was inserted on the printer, a fluid intake pipe on bracing frame was fit to and fluid outlet pipe 20 engagements, thereby allows prepared Chinese ink to flow to printer from installing 10.A driver (not shown) in bracing frame is fit to and pump 18 engagements.The operation of driver causes the China ink bag 14 of pump 18 from flexibility, passes fluid outlet pipe 20 prepared Chinese ink of low dose of predetermineds is offered fluid intake pipe on the bracing frame, yet arrive printer.

Base plate 16 has a filling mouth 32 and has an outlet 34 at its other end at the one end.Can add prepared Chinese ink in the ink-feeding device to by filling mouth 32, and cause air to pass through outlet 34 discharges owing to add prepared Chinese ink.After the ink-feeding device filling finishes, fill mouth 32 and fill mouthful 32 interior sealings by a ball 35 is pressed into.

Form on the base plate 16 of the pump chamber 36 of a bottom opening in a rigidity perisporium 37, this pump chamber preferably and base plate 16 be called one.As following described in more detail, thereby pump chamber 36 can pressurizedly offer printer to prepared Chinese ink, and does not need to be pressurizeed in the inside of China ink bag 14.The top of pump chamber 36 has an inlet 38, enters pump chamber 36 by a suction function in gravity effect or the pump chamber 36 from China ink bag 14 by these 38 prepared Chinese ink that enter the mouth.This pump chamber 36 also has an outlet 40, and by this outlet 40, prepared Chinese ink can be discharged from pump chamber 36.

An one-way flapper valve 42 is positioned at inlet 38, is used to limit prepared Chinese ink and is back to China ink bag 14 from pump chamber 36.Flapper valve 42 is piece of flexible material of a rectangle.Valve 42 is positioned at the bottom of inlet 38 in an illustrated embodiment, and is utilized on the mid point that heats the minor face that is fixed to base plate.When the pressure in the pump chamber 36 descends and when being lower than pressure in the China ink bag 14, flapper valve 42 does not utilize each spring song that adds heat fixation, permission prepared Chinese ink 38 flow in the pump chamber 36 by entering the mouth.Compare with just heating to be fixed on the base plate 16 with stake along the single lateral dominance of flapper valve 42, by utilizing flapper valve 42 the stake heating to be fixed on the base plate 16 along flapper valve 42 relative both sides, bending needed or that allow is littler, therefore guaranteed that the flapper valve sealing is tightr, and by utilize stake to add heat fixation along the mid point than minor face relative with longer sides, the sealing effect can be further strengthened.

In an illustrated embodiment, flapper valve 42 is made by two layers of material.Skin is the low-density polyethylene layer of 0.0015 inch of one deck.Internal layer is 0.0005 inch thick polyethylene terephthalate layer.Said flapper valve 42 about 5.5 mm wides, 8.7 millimeters long.When this flapper valve 42 was in detent position, so a kind of material was non-infiltration for prepared Chinese ink.

The bottom of pump chamber 36 is covered by one deck flexible membrane 44.This flexible membrane 44 is a bit larger tham the pump chamber opening, thereby seals near the free margins to the perisporium 37 that forms pump chamber 36.The flexible membrane 44 of oversized dimensions partly allow this flexible membrane crooked up and down more than material, thereby change the volume of pump chamber 36.In described device, 0.7 cubic centimetre of the volume-variation of the displacement of film 44 permission pump chamber 36.Volume after said pump chamber 36 fully expands is greatly between 2.2 and 2.5 cubic centimetres.

In described embodiment, flexible membrane 44 is made by multilayer material, comprises 0.0005 inch thick low density polyethylene layer, a layer binder, 0.00048 inch thick gold-plated polyethylene terephthalate layer of one deck and 0.0005 inch thick low-density polyethylene layer of one deck.Certainly, also can make flexible membrane 40 with other suitable material.Flexible membrane 44 is to use conventional method utilization stake to heat on the perisporium 37 that is fixed in the pump chamber 36 in described embodiment.In utilizing stake heating fixation procedure, any fold or the projection of the low density polyethylene (LDPE) in flexible membrane 44 in can sealed soft film 44.Therefore, flexible membrane 44 anti-blocks and moisture content infiltration are passed, and have prevented that therefore the prepared Chinese ink in the pump chamber 36 is exposed to any material.

In pump chamber 36, a pressing plate 46 is positioned near the flexible membrane 44, and this pressing plate 46 is used as a piston with respect to pump chamber 36.A pump spring 48 is made with stainless steel in said embodiment converges, thereby makes the size of flexible membrane 44 outside expansion pump chambers 36 towards flexible membrane 44 extruding pressing plates 46.For pump spring 48 is remained on its position, an end of pump spring 48 is connected on the nail 50 at pump chamber 36 tops, and the other end of pump spring 48 is connected on the nail 52 on the pressing plate 46.Form at the highdensity polyethylene molding of described embodiment center platen 46 usefulness.

The cylinder 54 of a hollow stretches out downwards and forms fluid issuing 20 from base plate 16, and this cylinder 54 is made one with base plate 16.The through hole 56 of cylinder 54 has a narrow 54a of throat in its lower end.Gather a ball sealer 58 made from stainless steel at described embodiment and be positioned at this through hole 56.But the size of design sealing part makes the sealing ball to move freely in through hole 56 can not be by the 54a of throat of through hole 56.A Packing spring 60 is positioned at through hole 56, thereby is used for forming a sealing towards narrow throat crush seal ball 58, prevents that prepared Chinese ink from passing fluid issuing and flowing.A maintenance ball 62 of being made by stainless steel is pressed into the bottom of through hole 56 in described embodiment, thereby Packing spring is remained on its position.Thereby the structure of through hole 56 is used to allow the prepared Chinese ink freedom to enter in the through hole 56 by keeping ball 62.

The multilayer pipe 64 of a projection forms on the top of base plate 16.This multilayer pipe 64 forms a cylinder near filling mouth 32, form a similar cylinder near the top of inlet 38, so each oral area is separated out.The base portion that this multilayer pipe 64 reaches fluid issuing 20 forms an open-topped conduit 66, and this conduit 66 connects two oral areas.

Flexible China ink bag 14 is connected to the top of multilayer pipe 64, therefore conduit 66 is formed a top cover.In described embodiment, thereby this is to finish by surrounding conduit 66 on the end face that the plastic films 68 utilization stake heating of a rectangle is fixed to multilayer pipe 64.In said embodiment, the highdensity polyethylene of base plate 16 usefulness is made, and plastic films is low-density polyethylene, and thickness is 0.002 inch.These two materials can use conventional method utilization stake heating to be secured together at an easy rate, and are easy to recycling.

After plastic films 68 was connected on the base plate 16, plastic films was folded, and two side and top are sealed, thereby formed flexible China ink bag 14.And, in said embodiment, can use the periphery that utilizes stake to add thermal fixing method sealed soft China ink bag 14.Therefore plastic films above filling mouth 32 and inlet 38 can be pierced, pass or can be eliminated, and this plastic films can not stop that prepared Chinese ink is mobile by what these mouthfuls carried out.

Although flexible China ink bag 14 provides an ideal style of containing China ink, thereby should still be easy to be pierced or tear cause prepared Chinese ink to flow through with high flow by the China ink bag.Therefore, in order to protect China ink bag 14 and the leakage of restriction moisture content, China ink bag 14 is wrapped in the containment vessel 12.In said embodiment, containment vessel 12 is made by polypropylene, and this containment vessel 12 is transparent, therefore can check out the prepared Chinese ink amount in the China ink bag 14, thereby guarantees to have the prepared Chinese ink of sufficient amount in the China ink bag and the normal operation that guarantees printer.The containment vessel that it is found that a millimeter thickness can provide firm protection and prevent the loss of moisture content unnecessary in the prepared Chinese ink.Yet the thickness of containment vessel and material can change in other embodiments.

The top of containment vessel 12 has the prominent rib 70 of many projectioies, thereby provides a handle for containment vessel when it is inserted into or takes out from bracing frame.Vertical prominent rib 72 extends laterally from each side of containment vessel 12.These vertical prominent ribs 72 can be contained in the interior groove (not shown) of bracing frame, thereby when this containment vessel is positioned in the printer ink-feeding device are provided a lateral support and improves stability.The bottom of containment vessel 12 has two ring-shaped grooves or groove 76, the prominent rib of annular or plush copper 78 engagements that form on the perisporium 79 of ring-shaped groove 76 and the base plate 16 that is relied on, thus 12 1 slide fastener modes of containment vessel are fixed on the base plate 16.

The preferably slide fastener mode that is connected between containment vessel 12 and the base plate 16, thus prevent that the base plate accident from separating from containment vessel, if appearring in flexible China ink bag, a crack can stop prepared Chinese ink to flow out.Yet also do not need to form a kind of hermetic seal structure, after prepared Chinese ink flows to end in the China ink bag 14, can allow air slowly to enter in the containment vessel 12 like this, thereby the interior confined pressure of the pressure of keeping containment vessel 12 and its China ink bag is basic identical.Otherwise will in containment vessel, form a negative pressure and hinder prepared Chinese ink outflow in the China ink bag 14.Yet for the moisture loss keeping humidity enough in the containment vessel and reduce prepared Chinese ink also should limit air inflow.

In said embodiment, the flexible China ink bag 14 that containment vessel 12 and it are wrapped in can hold about 30 cubic centimetres prepared Chinese ink.About 67 mm wides of this containment vessel, 15 millimeters thick and 60 millimeters high.Thereby the size that designs this flexibility China ink bag 14 makes this flexibility China ink bag 14 can be contained in the containment vessel 12 and can not form more than material.Certainly, other size and dimension also can use, this depend on the particular requirement of given printer.

In order to fill printer 10, prepared Chinese ink can be from filling mouthful 32 interior injections.After finishing filling, thereby flexible China ink bag 14 expansions almost are full of whole protecting shell 12.Thereby open fluid issuing when prepared Chinese ink ball sealer 58 when entering the China ink bag can be depressed, the vacuum of a part can be applied on the fluid intake 20.This partial vacuum at fluid issuing causes prepared Chinese ink to enter the through hole 56 of pump chamber 36, conduit 66 and cylinder 54 from 14 fillings of China ink bag, even therefore almost do not have or have also air seldom contact with prepared Chinese ink.This partial vacuum that is applied on the fluid issuing 20 also can be quickened whole stowing operation.For the further quick filling of realization China ink bag 14, thereby provide an outlet 34 when 14 expansions of China ink bag, to allow the air in the containment vessel to flow out.In case the ink-feeding device filling finishes, thereby ball 35 is pressed into to fill and prevents in mouthfuls 32 that prepared Chinese ink from flowing out and the entering of air.

Certainly, can make in all sorts of ways and be used for filling this Sheng China ink and ink discharging device.In some cases, before with the whole device of prepared Chinese ink filling, can wash with carbon dioxide earlier.Any gas when carrying out filling under this form in this device all is carbon dioxide rather than air.This is a kind of preferential selection, and air can not because carbon dioxide can be dissolved in some prepared Chinese ink.Usually will from device, remove air as much as possible, so bubble and analog can not enter in printhead or the tail pipe (trailig tube).

Over cap 22 is placed on the device 10 after filling is finished.This over cap has a groove 80, and first prominent rib 82 is connected to this over cap on the base plate 16 on the base plate 16 thereby this groove 80 is holding.This over cap 22 has a lug 84, and this lug 84 is used to seal outlet 34, thereby limit air flows into minimizing moisture loss in the base plate.Stretch out a projection 86 from each end of base plate 16, thereby this projection 86 is contained in the shrinkage pool on the over cap 22 and helps over cap to align, thereby strengthened being connected between over cap and the base plate.The free end of projection 86 reaches the shrinkage pool inside of over cap 22; can make projection 86 generations be out of shape by making contact when being preferably in over cap and being placed on its position, because thisly add thermal deformation and can reduce and cover 22 resistances when being connected on the base plate 16 with a heating tool.And, thereby label 24 is glued on the side of device 10 containment vessel 12, base plate 16 and over cap 22 only is fixed together.In said embodiment, soluble pressure-sensitive or other binding agent that is heated this label that is used to bond, thus prevent that this label from tearing from device, stop and use this ink-feeding device without permission.

Each side of over cap 22 has a vertical prominent rib 90 in said embodiment.The rib 90 of should dashing forward is extensions of prominent rib 72 on the containment vessel 12, and similar with vertical prominent rib 72, this prominent rib 90 is installed in the interior groove of bracing frame.Except prominent rib 90, over cap 22 also has outstanding key 92 in each side of prominent rib 90.Can optionally delete or change one or more outstanding key 92 and therefore can provide a specific recognition structure according to ink color or type.The fit key (not shown) that is used to discern prepared Chinese ink type and color forms on bracing frame.In this manner, a user can not be inserted into the ink-feeding device of a mistake in the bracing frame unintentionally.This structure is particularly useful for the multicolour printer, and in the multicolour printer, adjacent several bracing frames are used to hold the ink-feeding device of different colours.

In the embodiment of Figure 10-11, represent with 100 serial sign flags that with middle corresponding symbol among Fig. 1-9 its last two digits is corresponding with the two digits mark of counter element among Fig. 1-9.

Flapper valve in Figure 10-11 embodiment is represented with mark 142.This flapper valve 142 is formed by a thin flexible membrane or lamellar structure, is used to allow prepared Chinese ink to pass on the plastic bottom board 11 a molded inlet 138 that forms and arrives and surrounded in the pump chamber 136 that limits by perisporium 137.Prepared Chinese ink passes the inlet 138 arrival pump chambers 136 that flow when the pressure in the pump chamber 136 is lower than the pressure of inlet in 138.In this case, flapper valve 142 can not be utilized the stake heating and be fixed on the adjacent structure of base plate 116, thereby this flapper valve is easy to bias voltage by pump spring 148.And an other end (not shown) of pump spring 148 and the engagement of pressing plate (not shown), the 26S Proteasome Structure and Function of the pressing plate 46 among this pressing plate and Fig. 1-9 is corresponding.Under any circumstance, when the pressure in the pump chamber 136 is lower than the pressure of inlet in 138, flapper valve 142 will be opened sealing from the adjacent structure on the base plate 116, and the effect by gravity and/or pressure allows prepared Chinese ink to pass to enter the mouth 138 to enter in the pump chamber 136 then.When the pressure in the pump chamber 136 during greater than the pressure of inlet in 138, this situation is to use the situation of a pump of the Sheng China ink of this flapper valve 142 and ink-feeding device in circulating, thereby pump spring 148 will expand and push flapper valve 142 tightly, stops prepared Chinese ink 138 to enter pump chamber 136 from entering the mouth.Therefore also stoped prepared Chinese ink to be back in the inlet 138 from pump chamber 136.From Figure 10-11, can clearly find out the axial alignment of pump spring 148 and inlet 138.

In the embodiment of Figure 12, represent with 200 serial sign flags that with middle corresponding symbol among Fig. 1-9 its last two digits is corresponding with the two digits mark of counter element among Fig. 1-9.

Flapper valve in Figure 12 embodiment is represented with mark 242.This flapper valve 142 is formed by a thin flexible membrane or lamellar structure, when the pressure in the pump chamber 136 is lower than the pressure of inlet in 138, be used to allow prepared Chinese ink to pass on the plastic bottom board 11 a molded inlet 238 that forms and arrive and surrounded in the pump chamber 236 that limits by perisporium 237 (not shown), this perisporium 237 is corresponding with perisporium 37 among Fig. 1-9 embodiment.In this case, flapper valve 242 can not be utilized the stake heating and be fixed on the adjacent structure of base plate 216, thereby this flapper valve is easy to bias voltage by pump spring 248.And the engagement of an other end (not shown) of pump spring 148 and a pressing plate (also not shown), the 26S Proteasome Structure and Function of the pressing plate 46 among this pressing plate and Fig. 1-9 is corresponding.Under any circumstance, when the pressure in the pump chamber 236 is lower than the pressure of inlet in 238, flapper valve 242 bias voltage that will make progress, the adjacent structure from base plate 216 is opened sealing, and the effect by gravity and/or pressure allows prepared Chinese ink to pass inlet 238 to enter in the pump chamber 236 then.When the pressure in the pump chamber 236 during greater than the pressure of inlet in 238, this situation is to use the situation of a pump of the Sheng China ink of this flapper valve 242 and ink-feeding device in circulating, thereby pump spring 148 will expand and push flapper valve 242 downwards, stops prepared Chinese ink 238 to enter pump chamber 236 from entering the mouth.Therefore also stoped prepared Chinese ink to be back in the inlet 238 from pump chamber 236.Can find out clearly that from Figure 12 pump spring 248 is with respect to the journal offset of inlet 238.Therefore flapper valve 242 preferably has the intrinsic property that is similar to spring, 242 pairs of flapper valves 238 can be strengthened by following manner to the sealing of pump chamber 236 from entering the mouth: the free end of flapper valve 242 that is to from entering the mouth 238 to the endwise skew that seals the pump chamber 236, as shown in figure 12.

In the embodiment of Figure 13, represent with 300 serial sign flags that with middle corresponding symbol among Fig. 1-9 its last two digits is corresponding with the two digits mark of counter element among Fig. 3-9.

Molded plastic bottom board 316 comprises an inlet 338, is used to allow prepared Chinese ink to flow in the pump chamber 316, and this pump chamber 316 surrounds (not shown) by an annular perisporium, and this perisporium is corresponding with perisporium 37 among Fig. 1-9.Base plate 316 comprises the truncated cone base 316a of an annular in inlet 338, by providing a unsteady control ball 342 can realize that prepared Chinese ink passes the one-way flow that inlet 338 arrives pump chamber 336, this control ball 342 seals truncated cone base 316a in the choke position of control ball 342.This control ball 342 usually by Packing spring 342a extruding to truncated cone base 316a, the end of sealing spring 342a contacts with control ball 342, and an other end and being kept by a pump spring 348.In this case, a said end of pump spring 348 is contained in the nail 350, and an other end (not shown) and a pressing plate (not shown) engagement, wherein, nail 350 is made for one with base plate 316, and the pressing plate 46 of the embodiment among pressing plate 346 and Fig. 1-9 is corresponding.

In the embodiment of Figure 14, represent with 400 serial sign flags that with middle corresponding symbol among Fig. 1-9 its last two digits is corresponding with the two digits mark of counter element among Fig. 1-9.

Sheng China ink and ink discharging device according to the embodiment of Figure 14 have a molded plastic bottom board 416, have an inlet 438 in this base plate, and base plate 416 comprises one at the truncated cone base 416a of the annular in 438 that enters the mouth.When control ball 442 meshes with base 416a, by being provided, a control ball 442 that floats that is positioned in the inlet 438 can realize that prepared Chinese ink passes inlet 448 and arrives flowing of pump chamber 446, this pump chamber 436 is surrounded by a perisporium (not shown), the perisporium 37 among this perisporium corresponding diagram 1-9.This control ball 442 can move freely in the certain limit of inlet 438, and this moving range is by truncated cone base 416a and pump spring 448 decisions.The ends restrict control ball 442 of said base 416a leaves moving of base 416a.Pump spring 448 is tightly located by nail 450 with respect to control ball 442, and nail 450 is made one with base plate 416, this nail has a relative end (not shown) and pressing plate engagement (not shown), and the 26S Proteasome Structure and Function of the pressing plate 46 among this pressing plate and Fig. 1-9 is corresponding.Therefore control ball 442 and be not mechanically toward base 416a energetically, and these are different with the mode of control ball 342 among Figure 13, it controls ball 342 by spring 342a toward base 316a energetically.Yet, the pressure in elevated pressures in pump chamber 436 and the inlet 438 will be hydraulically 442 extruding of control ball to base 416a, thereby in a pump circulation of inventive embodiment shown in Figure 14, shutoff prepared Chinese ink is back to from pump chamber 436 and enters the mouth 438.

In the embodiment of Figure 15, represent with 500 serial sign flags that with middle corresponding symbol among Fig. 1-9 its last two digits is corresponding with the two digits mark of counter element among Fig. 1-9.

The embodiment of Figure 15 is the distortion of the embodiment of Figure 14, change the structure of 538 the part of being to enter the mouth, this part is the downstream part of the annular frustoconical base portion 516a of molded plastic bottom board 516, and a such downstream part is represented by Reference numeral 538a.The downstream part of inlet 538 has the prominent rib 538b that a plurality of annular and separations are opened and extend along the longitudinal, be higher than at the pressure of inlet 538 upstream portion after control ball 542 is left base 516a by lifting under the influence of downstream part 538b pressure, should move by prominent rib 538b guiding control ball 542, this causes prepared Chinese ink to enter pump chamber 536, this pump chamber 536 surrounds (not shown) by a perisporium, and this perisporium is corresponding with perisporium 37 among Fig. 1-9.Because the existence of prominent rib 538b, therefore the cross-sectional area of the downstream part 538a part of inlet 538 leaves in the small distance of base 516a from control ball 542 greater than the cross-sectional area of counterpart among Figure 14, has increased the flow velocity of prepared Chinese ink through inlet 538.And because the elevated pressures of inlet 538 downstream part, control ball 542 can fast sealing base 516a when pump chamber 536 is pressurized.Under any circumstance, the restriction that all can be subjected to a pump spring 448 of moving at inlet 538 inner control balls 542, this spring 548 is similar to the pump spring 448 among Figure 14 embodiment, remain on base plate 516 and form on the nail 550 of one, the point mode, pump spring 448 is remained on its position by nail 450 in Figure 14.

In the embodiment of Figure 16, represent with 600 serial sign flags that with middle corresponding symbol among Fig. 1-9 its last two digits is corresponding with the two digits mark of counter element among Fig. 1-9.

Embodiment among Figure 16 is the improvement to the embodiment in Figure 10 and 11.In this case, in the embodiment shown in Figure 16, a molded plastic bottom board 616 has an inlet 638, can enter pump chamber 636 by these 638 prepared Chinese ink that enter the mouth, this pump chamber 636 is surrounded by a perisporium (not shown), the perisporium 37 among this perisporium corresponding diagram 1-9.The one-way flow that prepared Chinese ink passes this inlet 638 is guaranteed by a flap type 642, in a circulation of one that uses base plate 616 pump of containing China ink and ink discharging device, during pressure in the pressure in the pump chamber 636 is higher than pump intake 638, an annular base 616a of 642 pairs of base plates 616 of this flap type seals.And have a pump spring 648 with inlet 638 is coaxial, base plate 616 has prominent rib 616b, should prominent rib 616b be limited between pump spring 648 and the flap type 642 and with them and contact, this flap type contacts with spring 648 after the certain distance of flap type 642 lifting from the base 616.Prominent this of rib 616b extends axially, the needs that the reaction of the variation of the pressure differential in inlet 638a and the pump chamber 636 are optimized according to flap type, thereby can be changed adjust flap type 642 domain of walker.

In the embodiment of Figure 17, represent with 700 serial sign flags that with middle corresponding symbol among Fig. 1-9 its last two digits is corresponding with the two digits mark of counter element among Fig. 1-9.

In the embodiment shown in Figure 17, the one-way flow that the inlet 738 that prepared Chinese ink passes molded plastic bottom board 716 enters pump chamber 736 is guaranteed by the flexible piece 742 of molded plastics, this pump chamber 736 is surrounded by a perisporium (not shown), the perisporium 37 among this perisporium corresponding diagram 1-9.This flexible piece 742 has the frusto-conical surface 742a of an annular, in a Sheng using base plate 716 pump black and ink discharging device circulates, when end pressure in the pump chamber 736 is higher than pressure in the pump intake 738, the truncated cone base 716a of an annular of this frusto-conical surface and base plate 716 engagement.Yet when the pressure of inlet in 738 during greater than the pressure in the pump chamber 736, this flexible piece 742 can bending enter pump chamber 736, thereby makes the frusto-conical surface 742a of flexible piece 742 leave from truncated cone base 716a, so allows prepared Chinese ink to flow in the pump chamber 736.Flexible piece 742 is inserted on the nail 750 with respect to base plate 716 and is positioned, and this nail 750 is made one with base plate 716, and this flexible piece 742 is elastically biased toward to base plate 716 by pump spring 748, and this pump spring remains on the nail 750.Flexible piece 742 has a undercut part 742b, this undercut part 742b enters a hinge in the pump chamber 736 as flexible piece 742 bendings, can according to flap type to enter the mouth 738 and pump chamber 736 in the needs that are optimized of the reaction of variation of pressure differential, adjust thickness and the width of this undercut part 742b.

In the embodiment of Figure 18, represent with 800 serial sign flags that with middle corresponding symbol among Fig. 1-9 its last two digits is corresponding with the two digits mark of counter element among Fig. 1-9.

In the embodiment shown in Figure 18, a ball 842 is positioned in the inlet 738 of molded plastic bottom board 716, this ball restriction prepared Chinese ink is from entering the mouth 838 to pump chamber 836 interior flowing, and this pump chamber 836 is surrounded by a perisporium (not shown), the perisporium 37 among this perisporium corresponding diagram 1-9.Base plate 816 has the frusto-conical surface 816a of an annular, ball 842 these frusto-conical surfaces of sealing when the pressure in the pump chamber 836 is higher than the pressure of inlet in 838, thus preventing that prepared Chinese ink from passing to enter the mouth from pump chamber 836 838 refluxes.When inlet 838 pressure was higher than pressure pump chamber 836 in, ball 842 left from frusto-conical surface 816a, allows prepared Chinese ink from the 838 inflow pump chambers 836 that enter the mouth.

The a series of inside projection 816b that moves by annular and separation of the ball 842 in inlet 838 is limited, and ball 842 can be inserted in the inlet 838 by a mode that is pressed into.The projection 816b of base plate 816 by base plate 816 the annular frustoconical part 816c that makes progress form.So because the outer surface of the truncated cone part 816c of the part 816c of base plate 816 has a taper, this taper helps base plate 816 to separate from mould and core in the casting process of base plate.

Now, Sheng liquid and the pumping equipment of various embodiment of the present invention have all been made detailed description, in a most preferred embodiment of the present invention, this device is contained China ink and ink-feeding device as one of the stamping ink in the ink-jet printer especially.Yet should be able to consider that the present invention can be applied to the splendid attire and the discharge of other newton (low viscosity) fluid at an easy rate.

Although the applicant is thought at this be that illustrated embodiments is described till the applying date, but for those of ordinary skills, obviously, can do the replacement of some suitable modifications, modification and equivalent to the present invention, but these all do not depart from the scope of the present invention, and scope of the present invention is the wording in the appending claims and determines with the legal wording that the wording of claims is equal to.

Claims (10)

1. contain liquid and pumping equipment for one kind, comprise a rigidity with openend, cup-shaped shell, a molded plastic bottom board on openend that is fixed to shell, a base plate that has pump installation and have a fluid issuing, flexible China ink bag with an openend and blind end, the blind end of this flexibility China ink bag is positioned at shell, openend forms fluid with pump installation and is communicated with, a check valve that makes that flexible China ink bag and pump installation are separated, this check valve can allow liquid from China ink bag inflow pump device, and stop liquid to be back in the flexible China ink bag from pump installation, thereby discharge fluid by liquid outlet from pump installation, it is characterized in that: it is to utilize the stake heating to fix (heat staked) to the base plate that check valve does not have a part.

2. the Sheng liquid and the pumping equipment of claim 1, the wherein flat part made for the flexible material that has a spring property by of the form of check valve.

3. the Sheng liquid and the pumping equipment of claim 2, wherein said flat part have a part that covers said base plate.

4. the Sheng liquid and the pumping equipment of claim 3, also comprise: spring element is used for towards said base plate the part of said flat part being pushed.

5. the Sheng liquid and the pumping equipment of claim 4, wherein, said spring part along with said base plate on the direction of said register push said flat part.

6. the Sheng liquid and the pumping equipment of claim 4, wherein, said spring element pushes said flat part, make it with said base plate on said opening do not line up mutually.

7. the Sheng liquid and the pumping equipment of claim 1, wherein, the ball of the form of said check valve for the annular base around the inlet on the base plate being sealed, the said pump installation of opening conducting wherein by one.

8. the Sheng liquid and the pumping equipment of claim 7, also comprise: spring assembly is used for flexibly pushing said ball, thereby is meshing with each other with said annular base.

9. the Sheng liquid and the pumping equipment of claim 1, wherein, said check valve is the molded plastics element of a flexibility, make plastic components have a part that has annular frustoconical surface, when said molded plastics element is positioned at shutoff prepared Chinese ink when pump installation is back to flexible China ink bag, a frusto-conical surface engagement on this part and the base plate also comprises:

At a locational spring assembly of the frusto-conical surface of the annular that departs from said molded plastics element,, this spring assembly makes itself and the engagement of said base plate thereby flexibly pushing said molded plastics element.

10. one kind makes liquid from black bag of method of carrying out one-way flow by a pump installation of containing on liquid and the pumping equipment base plate, base plate wherein has an inlet, this inlet makes said China ink bag and said pump installation form the fluid connection, and said method comprises:

A flap type element is provided, when the pressure in the pump installation is higher than pressure in the China ink bag, this element aligns with inlet on said base plate, thereby stops liquid to flow to the China ink bag from pump installation, and it is to utilize the stake heating to fix (heat staked) to base plate that flap type does not have a part.

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