CN1565754B - Emulsion pump for highly viscous materials - Google Patents

Emulsion pump for highly viscous materials Download PDF

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Publication number
CN1565754B
CN1565754B CN 03141464 CN03141464A CN1565754B CN 1565754 B CN1565754 B CN 1565754B CN 03141464 CN03141464 CN 03141464 CN 03141464 A CN03141464 A CN 03141464A CN 1565754 B CN1565754 B CN 1565754B
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piston
piston head
head
lower end
inclined surface
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CN 03141464
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CN1565754A (en )
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丁要武
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丁要武
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Abstract

A emulsion pump comprises a cylinder with a one-way valve on the lower part, a piston head, a piston with an inner ring and an outer ring, which composes a up-one-way valve with the piston head, a pressure head fixed on the top of the piston head, and a spring between the lower part of the piston head and the down-one-way valve, in which, flange forms on the edge of the lower end of piston head, the flange comprises an inside first inclined plane, the piston comprises an inclined plane on the outer side of the inner ring lower part, and the first inclined plane of the piston head hermeticallycommunicates with the inclined plane of the piston when the piston head contacts piston; or the flange comprises a second inclined plane on the outer side of top, the piston comprises an inclined plane on the inner side of the outer ring lower part, and the second inclined plane of the piston head hermetically communicates with the inclined plane of the piston when the piston head contacts the piston. Viscous liquid can be discharged from the emulsion pump easily by improving sealing performance of the one-way valve.

Description

高粘料乳液泵 High viscosity material lotion pump

技术领域 FIELD

[0001] 本发明涉及乳液泵,尤其是适用于高粘料液和膏体的乳液泵。 [0001] The present invention relates to an emulsion pump, particularly suitable for highly viscous paste and liquid emulsion feed pump. 背景技术 Background technique

[0002] 用于诸如洗发膏、沐浴露等的粘稠料液和膏体的乳液泵目前正日益广泛地应用于人们的日常生活中。 [0002] such as for shampoo, shower gel, lotion pump and the like and viscous paste stock solution is being increasingly widely used in people's daily life. 这种乳液泵通过按压动作,可以方便地从料液容器中抽吸出一定量的料液以供人们使用。 Such action by pressing the lotion pump, can be easily drawn from the liquid feed container, a certain amount of stock solution for people to use.

[0003] 图1示意地示出了市面上广泛使用的一个传统乳液泵的结构。 [0003] FIG. 1 schematically shows the structure of a conventional lotion pump widely used in the market. 该乳液泵包括一气缸1,其中设有一活塞头2和一活塞3,活塞头2的下端部向外扩出,形成一肩部,肩部的周缘形成有向外斜削的斜面10,以可与活塞3的内圈下端内侧的斜面11密封接触,使活塞头2和活塞3构成一上单向阀;其下端设有一珠子5和一下阀座6,珠子5和下阀座6构成一下单向阀。 The emulsion pump comprises a cylinder 1, which is provided with a piston head 2 and a piston 3, a lower end portion of the piston head 2 is outwardly expanded out, forming a shoulder slope outwardly beveled edge 10 weeks shoulder formed to the piston seal may be in contact with the inner ring 11 the lower end of the inclined surface 3 and the inside, the piston head 2 and the piston 3 constitutes a one-way valve; its lower end provided with a bead seat 5 and a lower 6, the beads 5 and the valve seat 6 constituting what one-way valve. 活塞头2的上端与一押头7固定地连接,活塞头2的下端与下单向阀之间设有一弹簧8,活塞头2可利用押头7和弹簧8在气缸1中上下往复运动,产生负压,从而通过连接在气缸1下端上的一个吸管从料液容器(未示出)中汲取料液。 The upper end of the piston head 2 and a nozzle head 7 fixedly connected to a spring 8 is provided between the lower end of the piston head 2 and the lower check valve, the piston head 2 may use the vertical reciprocating movement charge 8 and a spring 7 in the cylinder head 1, a negative pressure, so that from the feed liquid container (not shown) via a suction pipe connected to the lower end of the cylinder 1 draw feed solution.

[0004] 图1所示为乳液泵在未使用时的静止状态(即押头7复位后的状态),此时,向下按压押头7,活塞头2在押头7的作用下下移,活塞3由于与气缸1内壁的摩擦力而与下移的活塞头2分离,从而打开上单向阀。 [0004] Figure 1 shows (a state after the nozzle head 7, i.e., reset) the emulsion pump when the stationary state is not used at this time, the nozzle head 7 is pressed down, down under the action of the piston head 2 custody head 7, the piston 3 due to friction with the inner wall of the cylinder 1 piston separating head 2 down, thereby opening the check valve. 这时,下单向阀关闭,上下单向阀之间的料液就从押头7的喷嘴口9排出。 At this time, the check valve is closed, between the upper and lower feed liquid check valve is discharged from the nozzle opening of the nozzle head 7 9. 当使用者将押头7下压至下止点并松开时,抵压在活塞头2下端上的弹簧8的弹力使得活塞头2和押头7上行以复位,活塞3随活塞头6上行,由于活塞7与气缸3的摩擦力,活塞3被推压在活塞头2上,并在活塞3的内圈下端内侧的斜面10与活塞头2下端部肩部周缘处的斜面11之间形成压迫密封。 When the user pressed the nozzle head 7 to the lower dead point and releasing, pressed against the lower end of the piston head 2, the elastic force of the spring 8 causes the piston head 2 and an uplink 7 to reset the nozzle head, the piston with the piston head 6 up 3 , the frictional force of the piston 7 and the cylinder 3, the piston 3 is pressed against the piston head 2, and the lower end of the inner ring is formed between the inclined surface 10 of the piston 3 inside the first inclined surface and the second shoulder at the lower end periphery of the piston 11 compression seal. 这时,上下单向阀之间形成负压, 珠子5上行离开下阀座6,从而打开下单向阀,以通过吸管6从料液容器中吸取料液,供下一次按压操作使用。 At this time, a negative pressure is formed between the upper and lower one-way valve, the valve seat 6 at the beads 5 up to leave, thereby opening the one-way valve to feed liquid 6 drawn from a feed liquid container through a straw, used for the next pressing operation.

[0005] 但是,传统的乳液泵易出现不出液的情况,尤其是在使用一些特别粘稠的料液和膏体的情况下。 [0005] However, conventional lotion pump easily occurs no case where the liquid, especially in the case of using a special feed liquid and a viscous paste. 容易不出液主要原因是上单向阀不能完全密封,从而发生泄漏,使上下单向阀之间的真空度较低,无法吸满料液,残留有较多空气。 The main reason is not readily liquid check valve is not completely sealed, so that leakage occurs, the degree of vacuum between the upper and lower one-way valve is not high enough to suck the liquid material, remains more air. 按照传统的设计,如图1和传统上单向阀的放大视图2所示,活塞3的内圈下端内侧的斜面10位于活塞头2下端部肩部周缘处的斜面11的外侧,两者均向外倾斜地相抵。 According to the conventional design, and an enlarged view of a traditional one-way valve as shown, the lower end of the inner side of the inclined surface of the inner ring 10 of the piston 3 is located at the periphery of the bevel shoulder portion of the piston head lower portion 2 of the outer side 11 2, both obliquely outwardly against. 这样,当押头7从下止点上行、活塞头2撞击在活塞密封面上时,撞击力会分解为一个水平方向的向外张力,使活塞3的内圈受到向外的张力,但是,由于活塞不能中心射胶成型而存在“熔合线”,所以这样的撞击张力容易撕裂“熔合线”,从而导致上单向阀完全无法密封。 Thus, when the nozzle head 7 up from the lower dead center, the piston head 2 strike the sealing surface of the piston, the impact force will be divided into a horizontal direction outwardly tension of the inner ring 3 the piston outwardly under tension, however, Since the piston does not exist center of a light plastic molding "weld lines", so this impact tension easily torn "weld lines", thereby causing the one-way valve can not be completely sealed. 而且,当乳液泵启用后,人们不按压取液的绝大部分时间中,押头会处于上止点,这时,弹簧8压迫活塞头2向上,活塞头2也同样会压在活塞的密封斜面上,产生一水平方向向外的分力,并且这个力是长时间、持续不断的,所以也容易使“熔合线”撕裂。 Further, when the lotion pump is enabled, most of the time it takes liquid is not pressed, the nozzle head will be at the top dead center, at this time, the piston head 2 compression spring 8 upwardly, the piston head 2 will also seal against the piston on a slant, generates a component force in the horizontal direction outwardly, and this force is a long, continuous, so it is easy to "weld lines" tear. 除此之外,为了尽量防止“熔合线”撕裂,活塞3的密封圈就不能做得较薄,斜面的倾斜角度不能较小,所以无法提供较大的密封面积。 In addition, in order to try to prevent the "weld lines" tear, the piston seal 3 can not be made thinner, smaller slope inclination angle can not, it is impossible to provide a large sealing area. 而且活塞3的密封圈做得越厚,其柔性也越差,所以对活塞头2、活塞头3及气缸1等的零件圆度、同心度、装配后的同轴度等方面缺陷的适应性也越差。 3 and the piston seal is made thicker, the worse its flexibility, the roundness of the adaptive part of the piston head 2, the piston head 3 and the cylinder 1 and the like, concentricity, coaxiality of the assembly and other aspects of defects the worse. 这些原因都使上单向阀不能获得良好的密封效果, 并从而导致乳液泵不出液或出液困难。 The reasons are that the check valve is a good sealing effect can not be obtained, and the resulting emulsion was not pump out liquid or difficult.

[0006] 传统的乳液泵还存在一个问题,即当使用高粘度料液(例如,大于4000CPS时),还会出现复位困难。 [0006] The conventional lotion pump, there is a problem that, when high viscosity liquid material (e.g., greater than 4000 cps), there will be reduction difficult. 这时由于粘稠料液在吸管6中爬升的阻力较大,若要使料液在吸管中顺利地爬升,就需要较高的真空度和较大的弹簧弹力。 Viscous liquid feed this case, since in the suction pipe 6 to climb greater resistance to climb smoothly feed liquid in the suction tube, requires high vacuum and large spring force. 但如果加大弹簧力,又会使泵的手感加重,且活塞的密封圈受力更大,更易在熔合线处开裂。 But if the spring to increase the force, but also make the pump handle heavier and larger ring by the force of the piston, more crack at the fusion line. 在弹簧力一定的情况下,就要求活塞3与气缸1之间的摩擦力尽可能小,但摩擦力小又会使活塞3与活塞头2密封不好,因为从上面的叙述中可以看出,正是活塞3与气缸1内壁之间的摩擦力提供了活塞3的内圈下端内侧的斜面10与活塞头2下端部肩部周缘处的斜面11之间的压迫密封所需要的压力,所以摩擦力越小,密封压力也越小,密封效果也越差。 Under certain circumstances the spring force, the frictional force between the piston requires 3 and the cylinder 1 as small as possible, but the friction is small and the piston 3 will not seal the piston head 2, as can be seen from the above description , it is the friction between the piston 3 and the inner wall of the cylinder pressure and provides a compression seal between the inclined surface 11 of the shoulder portion at the periphery of the lower end portion of the piston head 2 require lower inclined surface of the inner ring 10 of the inner piston 3, so The smaller the frictional force, the smaller the sealing pressure, the sealing effect is worse. 所以传统设计的乳液泵活塞不会太软, 过盈量不会太小,这就造成了传统乳液泵设计在粘稠料液的吸出和复位之间的矛盾。 Therefore, an emulsion pump piston of conventional design will not be too soft, not too small amount of interference, which resulted in the traditional design between the lotion pump suck out the viscous liquid material and the reset conflicts.

发明内容 SUMMARY

[0007] 本发明正是鉴于上述现有技术的乳液泵中所存在的问题而设计出的。 [0007] The emulsion of the present invention was made in view of the pump in the above-described prior art and the problems devised.

[0008] 本发明的目标是提供一种出液性能改善的乳液泵。 [0008] The object of the present invention is to provide an improved performance of a liquid lotion pump.

[0009] 本发明的目的是提供一种上单向阀密封性能改善的乳液泵。 [0009] The object of the present invention is to provide a one-way valve sealing the improved performance of the lotion pump.

[0010] 本发明的目的是通过以下技术方案实现的,提供一种乳液泵来,它包括:一气缸, 其下端设有可向上打开的一下单向阀;一活塞头,其下端部向外扩出,形成一肩部;一活塞,它具有一内圈和一外圈,并与活塞头一起构成一上单向阀;一押头,固定连接在活塞头的上端;以及一弹簧,它位于活塞头下端与下单向阀之间,可与押头协同作用以使活塞头可在气缸内往复运动;其中,活塞头的下端部肩部的周缘处形成一突缘,活塞头的突缘设有在内侧的一第一斜面,活塞设有在内圈下端外侧的一斜面,当活塞头与活塞接触时,活塞头的第一斜面与活塞的斜面密封接触。 [0010] The object of the present invention is achieved by the following technical solutions, to provide an emulsion pump, comprising: a cylinder which is provided at the lower end of the check valve can be opened upwardly; a piston head, a lower end portion outwardly spread out, forming a shoulder; a piston having an inner ring and an outer ring, and with the piston head constituting a check valve together; a nozzle head, fixedly connected to the upper end of the piston head; and a spring which located in the head with the lower end of the piston between the lower check valve, acting synergistically with the nozzle head so that the piston head can reciprocate within the cylinder; wherein the lower end portion of the peripheral edge of the shoulder portion of the piston head is formed a flange, projecting piston head a first inclined surface provided on the edge of the inner piston has a slant in the lower end of the outer side of the inner ring, when the piston head contact with the piston, a first inclined surface of the piston head in sealing contact with the inclined surface of the piston.

[0011] 在上述的乳液泵中,活塞头的突缘设有在顶部外侧的一第二斜面,活塞设有在外圈下端内侧的一斜面,当活塞头与活塞接触时,活塞头的第二斜面与活塞的斜面密封接触。 [0011] In the emulsion pump, the flange of the piston head is provided with a second outer inclined surface of the top of the piston is provided in the lower end of an inclined inner side of the outer ring, when in contact with the piston head and the piston, a second piston head sealing contact with the inclined surface of the inclined surface of the piston.

[0012] 由于活塞头与活塞这样的斜面设计,在上单向阀关闭的状态下,活塞斜面受到活塞头斜面或气缸内侧壁对其的向内的约束力,而不是向外的张力,所以不必担心活塞的熔合线开裂,故可将活塞的密封圈做得较薄、斜面的夹角做得较小,这样,不仅增大了密封面积,而且接触斜面处的柔性也得到改善,能更好地适应因圆度、同心度、同轴度造成的不利影响。 [0012] Since the piston head and the piston design of such a ramp, the check valve in the closed state, the inclined surface of the piston by the inwardly inclined surface binding the piston head or the cylinder side wall thereof, rather than outward tension, so do not worry piston cracking weld lines, so that the piston ring can be made thinner, the bevel angle is made smaller, so that not only increases the sealing area, and the contact inclined surface of the flexible is also improved, more well adapted to adverse effects due to the roundness, concentricity, concentricity caused. 所以,上单向阀的密封性能得到了明显的改善,即使在使用特别粘稠的料液的情况下,乳液泵也易于出液。 Therefore, the one-way valve sealing performance has been significantly improved, even in the case of the use of special feed viscous liquid, the liquid lotion pump is also easy. 而且,密封性能的改善使乳液泵中无需较大的弹簧力就能提供较大的真空度,有利于高粘度料液的吸出,且按压手感轻。 Moreover, to improve the sealing performance of the emulsion pump without large spring force can provide a greater degree of vacuum, in favor of a high viscosity liquid material sucked out, and presses light touch.

[0013] 此外,本发明的乳液泵的其制造和装配的方法基本与现有技术的乳液泵相同,完全可以利用传统的制造设备来制造,所以制造成本也与现有技术的乳液泵相当。 [0013] Further, the method of the present invention, the lotion pump which manufacture and assembly is substantially the same as the emulsion prior art pumps, can use conventional manufacturing equipment to manufacture, the manufacturing cost comparable emulsion of the prior art pump.

附图说明 BRIEF DESCRIPTION

[0014] 下文将参照附图对本发明的较佳实施例进行具体的描述,在这些附图中: [0014] will hereinafter be described with reference to specific preferred embodiments of the present invention with reference to the drawings:

[0015] 图1是传统乳液泵的结构示意图,其中局部剖视出气缸内部的结构; [0015] FIG. 1 is a schematic diagram of the structure of a conventional lotion pump, wherein the cross-sectional view partially showing the internal structure of the cylinder;

[0016] 图2是图1所示的传统乳液泵的上单向阀的放大视图;[0017] 图3是根据本发明的乳液泵的结构示意图,其中局部剖视出气缸内部的结构; [0016] FIG 2 is a conventional emulsion pump shown in FIG. 1 is an enlarged view of the check valve; [0017] FIG. 3 is a schematic view of the structure of the emulsion pump of the invention, wherein partial cross-sectional view illustrating the internal structure of the cylinder;

[0018] 图4是根据本发明的乳液泵上单向阀的一实施例的放大视图; [0018] FIG. 4 is an enlarged view of an embodiment of the present invention, the lotion pump check valves;

[0019] 图5是根据本发明的乳液泵上单向阀的另一实施例的放大视图;以及, [0019] FIG. 5 is an enlarged view of another embodiment of a check valve of the present invention, the lotion pump; and,

[0020] 图6是根据本发明的乳液泵上单向阀的再一实施例的放大视图; [0020] FIG. 6 is an enlarged view of another one-way valve on the pump of the invention emulsion of an embodiment;

具体实施方式 Detailed ways

[0021] 图3示意地示出了根据本发明的一乳液泵的结构,除了上单向阀的结构之外,其基本的结构与图1所示的传统乳液泵结构相同。 [0021] FIG. 3 schematically shows a structure of a lotion pump of the present invention, in addition to the check valve structure outside of the same conventional emulsion pump shown the basic structure of FIG. 1 configuration.

[0022] 从图4所示乳液泵上单向阀放大的视图中可见,本实施例的活塞头与活塞之间的密封设计与传统设计的不同在于,活塞头12下端部肩部的周缘形成有一突缘13,突缘13内侧形成一向内侧倾斜的第一斜面16,活塞14内圈下端外侧形成一向外倾斜的斜面15,并使活塞头12的斜面16与活塞14的斜面15外侧相抵接触。 [0022] apparent from the lotion pump check valve shown in enlarged view in FIG. 4, different design between the seal piston and the piston head and conventional design is that the embodiment according to the present embodiment, the peripheral edge of the piston head 12 formed in the lower end portion of the shoulder portion has a flange 13, inner flange 13 has been formed in a first inclined surface 16 is inclined inner, lower end of the piston outside the inner ring 14 is formed with an outwardly inclined surface 15 is inclined, and the inclined surface 16 of the piston head 12 comes into contact with the outer inclined surface 15 of the piston 14 . 因此,当使用者将押头7下压至下止点后松开,活塞头12和押头7在弹簧8的弹力作用下上行复位,并使活塞14推压在活塞头12上时,作用在活塞的密封斜面15上的力是向内向上的,S卩,其水平分力是向内的束缚力,而不是原来向外的张力,所以活塞内圈的熔合线不会开裂。 Thus, when a user at the nozzle head 7 is pressed to release the bottom dead center, the piston head 12 and the nozzle head 7 up reset under the elastic force of the spring 8, the piston 14 is pushed and the piston head 12, the role of the inclined surface on the sealing force of the piston 15 is upwardly inwardly, S Jie, a horizontal component which is inwardly binding force, rather than the original outward tension, the piston will not crack the inner weld line. 因而可以尽量将活塞内圈做薄,斜面倾斜角度做小,从而增大密封面积,改善密封效果。 Thus the inner piston can be made thin as much as possible, a small inclination angle of the inclined surface, thereby increasing the sealing area, to improve the sealing effect. 同时,由于活塞内圈做得薄了, 所以其柔性也改善,更易于适应圆度、同心度、同轴度等因素带来的影响密封效果的缺陷。 Meanwhile, since the piston of the inner ring is made thin, it also improves its flexibility, easier to adapt to defects affect the sealing effect brought roundness, concentricity, coaxiality and other factors.

[0023] 活塞和活塞头还可以如图5所示地设计。 [0023] The piston and the piston head 5 may also be designed as shown in FIG. 在图5所示的实施例中,不仅活塞头17 下端部的突缘18内侧设有一第一斜面16,以可与活塞内圈下端外侧的向外倾斜的斜面15 相抵接触,而且活塞头17的突缘18顶部外侧还设有一第二斜面21,以可与活塞的外圈内侧的斜面20密封地相抵。 In the embodiment illustrated in FIG. 5, only the lower end of the piston head portion 17 of the flange 18 is provided with a first inner inclined surface 16 to the lower end of the inner ring with outer piston outwardly inclined surface 15 is inclined against the contact, and the piston head 17 an outer top flange 18 is also provided with a second inclined surface 21, 20 so as to be sealingly against the inner side of the outer ring and the inclined surface of the piston. 本实施例中的活塞头17的第一斜面16的受力及工作状况与第一实施例的第一斜面16相似,也同样具有良好密封性能和其它优点。 Similar to the first inclined surface 16 of the first embodiment of the inclined surface of the piston head 17 and the force of the working conditions of the first embodiment 16 of the present embodiment, and also has good sealing performance and other advantages. 本实施例的特点在于还设置了一第二斜面21。 The present embodiment is further provided with a second inclined surface 21. 尽管活塞头17的第二斜面21对活塞19的外圈斜面20施加一个向外的张力,但是由于活塞19的外圈本身已经抵靠在气缸1的内壁上,所以受到气缸1内壁的约束,活塞19的外圈无法再向外扩展,外圈的熔合线就不会发生撕裂。 Although the second inclined surface 21 of piston head 17 of the outer ring 19 of the piston a tension is applied outwardly inclined surface 20, but the outer ring 19 of the piston itself abuts against the inner wall of the cylinder 1, it is subject to an inner wall of the cylinder, the outer piston 19 can no longer expand outwardly, the outer weld line does not tear occur. 不仅如此,活塞头17的第二斜面21所施加的张力还全部用作密封压力,进一步改善了活塞头17与活塞19以及活塞19与气缸1的内壁之间的密封效果。 Moreover, the tension of the piston head 17 of the second inclined surface 21 is also applied as a sealing pressure of all, to further improve the sealing effect between the inner wall of the piston head 17 and piston 19 and the piston 19 and the cylinder 1.

[0024] 上述的实施例和附图仅是本发明的示范性实施例,在气缸、活塞、活塞头等的细部设计都可以根据具体的需求加以改变。 [0024] In the above-described embodiments and drawings are merely exemplary embodiments of the present invention, it can be changed in a cylinder, a piston head or in accordance with specific detail design requirements. 在本发明的范围内,还可以对上述的实施例作出各种的修改和变型,例如,如图6所示,当活塞24仅有一密封外圈向下延伸以与活塞头密封接触时,活塞头22的下端部的突缘23可以仅设置一位于顶端外侧的第二斜面21,该斜面21 可与活塞外圈内侧的斜面20密封地相抵。 Within the scope of the present invention, various modifications may be made and variations of the embodiments described above, for example, as shown in FIG. 6, when the piston 24 only to a downwardly extending outer sealing contact with the piston head seals, piston the lower end of the flange portion 22 of the head 23 may be provided only at the top of the outside of a second inclined surface 21, the inclined surface 21 may be inclined surface 20 sealingly against the inner side of the outer piston. 由于受到气缸1的内壁的约束,所以活塞24外圈的熔合线不会发生撕裂,同样可以取得良好的密封效果。 Due to the constraints of the inner wall of the cylinder 1, the piston 24 will not tear the outer weld line occurs, to also achieve a good sealing effect. 种种的修改和变型都落入所附权利要求书的限定的保护范围之内。 Within the scope of the various modifications and variations are within the appended claims as defined.

Claims (1)

  1. 一种乳液泵,它包括:一气缸(1),其下端设有可向上打开的一下单向阀;一活塞头,其下端部向外扩出,形成一肩部;一活塞,它具有一内圈和一外圈,并与活塞头一起构成一上单向阀,所述活塞的内圈上端与所述活塞头密封接触;一押头(7),固定连接在活塞头的上端;以及一弹簧(8),它位于活塞头下端与下单向阀之间,可与押头协同作用以使活塞头可在气缸内往复运动;其特征在于,活塞头的下端部肩部的周缘处形成一突缘,活塞头的所述突缘设有在内侧的一第一斜面(16),活塞设有在内圈下端外侧的一斜面(15),当活塞头在所述弹簧的弹力作用下上行复位而推压活塞上时,活塞头的所述第一斜面(16)与活塞的设置在内圈下端外侧的所述斜面(15)密封接触,所述活塞头的所述突缘设有在顶部外侧的一第二斜面(21),活塞设有在外圈下端内侧的一斜面(20) An emulsion pump, comprising: a cylinder (1), which is provided at the lower end of the check valve can be opened upwardly; a piston head, a lower end portion of the expanded outwardly to form a shoulder; a piston having a inner and an outer ring, and the piston head together constitute a one-way valve, the upper end of the inner piston sealing contact with the piston head; a nozzle head (7), fixedly connected to the upper end of the piston head; and a spring (8), which is located between the piston head and the lower end of lower check valve, the nozzle head may cooperate to reciprocate the piston head in the cylinder may be; wherein the lower peripheral edge of the shoulder portion of the piston head forming a flange, said flange provided with a piston head inside of the first inclined surface (16), the piston is provided with a bevel at the lower end of the outer side of the inner ring (15), the piston head when the elastic force of the spring the next ramp up reset pressing piston, the piston head of the first inclined surface (16) disposed on the outside of the piston inner lower end (15) in sealing contact with said flange of said piston head is provided in the second inclined surface has a top outer side (21), the piston is provided with a chamfer at the lower end of the outer ring inside (20) 当活塞头与活塞接触时,活塞头的所述第二斜面(21)与活塞的设置在外圈下端内侧的所述斜面(20)密封接触。 When the piston head in contact with the piston, the piston head of a second ramp (21) is provided with a piston (20) in sealing contact with the outer inclined surface of the lower end of the inner side.
CN 03141464 2003-07-09 2003-07-09 Emulsion pump for highly viscous materials CN1565754B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3583605A (en) 1969-01-17 1971-06-08 Diamond Int Corp Liquid dispensing pump
US4966535A (en) 1989-01-06 1990-10-30 Valois Non-return valve for admitting a liquid to be sprayed into a pump chamber, and utilization thereof
US6332561B1 (en) 1998-03-26 2001-12-25 Valois S.A. Airless dispensing device
CN1385247A (en) 2001-05-11 2002-12-18 增田胜利 Pump for spraying pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3583605A (en) 1969-01-17 1971-06-08 Diamond Int Corp Liquid dispensing pump
US4966535A (en) 1989-01-06 1990-10-30 Valois Non-return valve for admitting a liquid to be sprayed into a pump chamber, and utilization thereof
US6332561B1 (en) 1998-03-26 2001-12-25 Valois S.A. Airless dispensing device
CN1385247A (en) 2001-05-11 2002-12-18 增田胜利 Pump for spraying pump

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