5 10 15 1232196 玖、發明說明： 【發明所屬之技術領域】 本發明是有關於一種乳液泵，特別是指一種適用於高 粘料液和膏體的乳液泵。5 10 15 1232196 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to an emulsion pump, and more particularly to an emulsion pump suitable for highly viscous liquids and pastes.
【先前技術J 用於諸如洗髮膏、沐浴露等的粘稠料液和膏體的乳液 泵目前正曰益廣泛地應用於人們的日常生活中。這種乳液 泵通過按壓動作，可以方便地從料液容器中抽吸出一定量 的料液以供人們使用。 圖1示意地示出了市面上廣泛使用的一個傳統乳液栗 的結構。該乳液泵包括-氣缸！，其中設有—活塞頭2和 一活塞3，活塞頭2的下端部向外擴出，形成一肩部，肩 部的周緣形成有向外斜削的斜面1〇，以可與活塞3的内圈 下端内側的斜面11密封接觸，使活塞頭2和活塞3構成一 上单向閥；氣缸的下端設有一珠子5和一下閥座6，珠子 :和下閥座6構成—下單向閥。活塞頭2的上端與一押頭 蕃s 塞員2的下端與下單向閥之間設有一彈 黃8 ’活塞頭2可利用細-5 頭和彈簧8在氣缸1中上下往 復運動， 生 * 阵 吸管從料液容器（未示、 從1下端上的-個 不不出）中汲取料液。 圖1所示 朝 重定後的狀態），此時 ^在未使用時7 7的作用下下移，活塞/下按壓押頭7,活塞頭2在押頭 下移的活塞頭2分離\與氣紅1内壁的摩擦力而與 從而打開上單向閥。這時，下單向 20 1232196 閥關閉，上下單向閥之間的料液就從押頭7的喷嘴口 9排 出。當使用者將押頭7下壓至下止點並鬆開時，抵壓在活 塞頭2下端上的彈簧8的彈力使得活塞頭2和押頭7上行 以重定，活塞3隨活塞頭2上行。由於活塞3與氣缸i的 摩擦力，活塞3被推壓在活塞頭2上，並在活塞3的内圈 下端内側的斜面10與活塞頭2下端部肩部周緣處的斜面 11之間形成壓迫密封。這時，上下單向閥之間形成負壓， 珠子5上行離開下閥座6，從而打開下單向閥，以通過吸 管6從料液容器中吸取料液，供下一次按壓操作使用。 但疋，傳統的乳液栗易出現不出液的情況，尤其是在 使用一些特別粘稠的料液和膏體的情況下。容易不出液主 要原因是上單向閥不能完全密封，從而發生泄漏，使上下 單向閥之間的真空度較低，無法吸滿料液，殘留有較多空 氣。按照傳統的設計，如圖i和傳統上單向閥的放大視圖 2所示，活塞3的内圈下端内側的斜面1〇位於活塞頭2下 端部肩部周緣處的斜面11的外側，兩者均向外傾斜地相 抵。這樣，當押頭7從下止點上行、活塞頭2撞擊在活塞 岔封面上時，撞擊向的;向清張分解 個 使活塞3的内圈受到向外的張力，但是，由於活塞不能中 心射膠成型而存在“熔合線”，所以這樣的撞擊張力容易 撕裂“熔合線”，從而導致上單向閥完全無法密封。而 且，當乳液系 用後，人們不 中，押頭會處於上止點，這時，彈簧8壓迫活塞頭2向上， 活塞頭2也同樣會壓在活塞的面密封 1232196 向向外的刀力，並且這個力是長時間、持續不斷的，所以 也谷易使“熔合線撕裂。除敗 合線”撕裂，活塞3的密封圈就不能做得較薄，斜面的傾 斜角度不能較小’所以無法提供較大的密封面積。而且活 塞3的密封圈做得越厚，其柔性也越差，所以對活塞頭2、 活塞頭3及氣缸1等的零件圓度、同心度、裝配後的同軸 度等方面缺陷的適應性也越差。這些原因都使上單向閥不 能獲得良好的密封效果，並從而導致乳液泵不出液或出液 困難。 傳統的乳液泵還存在一個問題，即當使用高粘度料液 (例如，大於4000CPS時），還會出現重定困難。這時由 於粘稠料液在吸管6中爬升的阻力較大，若要使料液在吸 管中順利地爬升’就需要較高的真空度和較大的彈簧彈 力。但如果加大彈簧力，又會使泵的手感加重，且活塞的 密封圈受力更大，更易在熔合線處開裂。在彈簧力一定的 情況下，就要求活塞3與氣缸1之間的摩擦力盡可能小， 但摩擦力小又會使活塞3與活塞頭2密封不好， 面的 述中可以看3與氣缸1内壁之間的摩 擦力提供了活塞3的内圈下端内側的斜面1〇與活塞頭2 下端部肩部周緣處的斜面11之間的壓迫密封所需要的壓 力’所以摩擦力越小，密封壓力也越小，密封效果也越差。 所以傳統設計的乳液栗活塞不會太軟，過盈量不會太小， 這就造成了傳統乳液泵設計在粘稠料液的吸出和重定之 間的矛盾。 1232196 【發明内容】 本發明正是鑒於上述現有技術的乳液泵中所存在的 問題而設計出的。 本發明的目標是提供一種出液性能改善的乳液泵。 本發明的目的是提供一種上單向閥密封性能改善的 乳液泵。 本發明的目的是通過以下技術方案實現的，提供一種 乳液栗來’它包括：—氣缸’其下端設有可向上打開的一[Prior art J Emulsion pumps for viscous liquids and creams such as shampoos, shower gels, etc. are currently being widely used in people's daily lives. This emulsion pump can easily pump a certain amount of liquid from the liquid container for people to use by pressing. Fig. 1 schematically illustrates the structure of a conventional emulsion chestnut widely used in the market. The lotion pump includes-a cylinder! The piston head 2 and a piston 3 are provided therein. The lower end portion of the piston head 2 is extended outward to form a shoulder. The peripheral edge of the shoulder portion is formed with a beveled surface 10 that is beveled outward to communicate with the piston 3. The bevel 11 on the inner side of the lower end of the inner ring is in sealing contact, so that the piston head 2 and the piston 3 constitute an upper check valve; the lower end of the cylinder is provided with a bead 5 and a lower valve seat 6, and the bead is formed with the lower valve seat 6—the lower check valve . There is a spring yellow 8 'between the upper end of the piston head 2 and a betting fan. The lower end of the stopper 2 and the lower check valve. The piston head 2 can use the thin -5 head and spring 8 to reciprocate up and down in the cylinder 1. * The array pipette draws the feed liquid from the feed liquid container (not shown, from the bottom of 1). Figure 1 shows the state after resetting). At this time, ^ moves down under the action of 7 7 when not in use, and the piston / presses the plunger 7 downward, and the plunger head 2 with the plunger moved downward is separated from the gas red \ 1 The frictional force on the inner wall causes the upper check valve to open. At this time, the one-way 20 1232196 valve is closed, and the liquid material between the upper and lower one-way valves is discharged from the nozzle port 9 of the plunger 7. When the user presses the plunger head 7 to the bottom dead center and releases it, the elastic force of the spring 8 pressed against the lower end of the piston head 2 causes the piston head 2 and the plunger head 7 to move upward to reset, and the piston 3 moves upward with the piston head 2 . Due to the friction between the piston 3 and the cylinder i, the piston 3 is pushed against the piston head 2 and a pressure is formed between the inclined surface 10 inside the lower end of the inner ring of the piston 3 and the inclined surface 11 at the peripheral edge of the shoulder of the lower end of the piston head 2 seal. At this time, a negative pressure is formed between the upper and lower check valves, and the beads 5 move upward from the lower valve seat 6 to open the lower check valve to suck the liquid material from the liquid container through the suction pipe 6 for the next pressing operation. But alas, traditional emulsion chestnuts are prone to no liquid, especially when some particularly thick liquids and pastes are used. The main reason for not being able to produce liquid is that the upper check valve cannot be completely sealed, which leads to leakage. The vacuum between the upper and lower check valves is low, the liquid cannot be sucked up, and more air remains. According to the traditional design, as shown in FIG. I and the traditional enlarged view 2 of the check valve, the inner side of the lower end of the inner ring of the piston 3 has a slope 10 located outside the slope 11 at the peripheral edge of the shoulder of the lower end of the piston head 2 They all offset outwards. In this way, when the plunger 7 goes up from the bottom dead center and the piston head 2 hits the cover of the piston fork, the impact is directed; the pressure is dissipated to make the inner ring of the piston 3 subject to outward tension, but because the piston cannot shoot at the center There is a "fusion line" in the molding of the glue, so such impact tension easily tears the "fusion line", resulting in the upper check valve being completely unable to seal. Moreover, when the emulsion is used, people will not hit, and the head will be at the top dead center. At this time, the spring 8 presses the piston head 2 upward, and the piston head 2 will also press the piston face seal 1232196 outward. And this force is long and continuous, so Gu Yi tears the "fusion line. In addition to the failure line" tears, the sealing ring of the piston 3 cannot be made thin, and the inclined angle of the inclined surface cannot be smaller. Therefore, a larger sealing area cannot be provided. And the thicker the sealing ring of piston 3, the less flexible it is. Therefore, the adaptability to defects such as roundness, concentricity, and coaxiality after assembly of piston head 2, piston head 3, and cylinder 1 is also adaptable. Worse. For these reasons, the upper non-return valve cannot obtain a good sealing effect, and as a result, the emulsion pump does not discharge liquid or it is difficult to discharge liquid. Another problem with conventional emulsion pumps is that when using high-viscosity fluids (for example, greater than 4000 CPS), re-setting difficulties can occur. At this time, since the viscous material liquid has a large climbing resistance in the suction pipe 6, if the material liquid is to climb smoothly in the suction pipe ', a higher vacuum degree and a larger spring force are required. However, if the spring force is increased, the pump feel will be aggravated, and the piston seal will be more stressed, and it will be more likely to crack at the fusion line. In the case of a fixed spring force, the friction between the piston 3 and the cylinder 1 is required to be as small as possible, but the small friction force will cause the piston 3 and the piston head 2 to seal poorly. In the above description, you can see 3 and the cylinder 1 The friction between the inner walls provides the pressure required for the pressure seal between the beveled surface 10 inside the lower end of the inner ring of the piston 3 and the beveled surface 11 at the peripheral edge of the shoulder of the lower end of the piston head 2 The smaller the pressure, the worse the sealing effect. Therefore, the traditionally designed emulsion chestnut piston will not be too soft, and the interference will not be too small, which has caused the contradiction between the traditional emulsion pump design in sucking out and resetting the viscous liquid. 1232196 Summary of the Invention The present invention has been designed in view of the problems existing in the above-mentioned prior art emulsion pumps. The object of the present invention is to provide an emulsion pump with improved liquid discharge performance. The object of the present invention is to provide an emulsion pump with improved sealing performance of the upper check valve. The object of the present invention is achieved by the following technical solution, and provides an emulsion pump. It includes:-a cylinder, which is provided with a lower opening
下單向閥；-活塞頭，其下端部向外擴出，形成一肩部； -活塞’它具有—内圈和—外圈’並與活塞頭—起構成— 上皁向閥；一押頭’固定連接在活塞頭的上端；以及一彈 簧，它位於活塞頭下端與下單向閥之間，可與押頭協同作 用以使活塞頭可在氣缸内往復運動；其中，活塞頭的下端 部肩部的周緣處形成-突緣，活塞頭的突緣設有在内側的 -第-斜面，活塞設有在㈣下端外側的—斜面，當活塞 頭與活塞接觸時’活塞頭的第—斜面與活塞的斜面密封接 觸；或者’活塞頭的突緣設有在頂部外側的—第二斜面， 活塞設有在外圈下端内側的—斜面，當活塞頭與活塞接觸 時，活塞頭的第二斜面與活塞的斜面密封接觸。 斜面，當活塞頭與活塞接觸時，活塞頭的第—斜面與$ 内圈下端外側的斜面密封接觸，活塞頭的第二斜面與$ 在上述的乳液栗中，活塞頭的突緣可以同時在内側設 置-第-斜面並在頂部外側設置—第二斜面，活塞可以同 時在内圈下端外侧設置-斜面並在外圈下端内織置一 7 1232196 外圈下端内侧的斜面密封接觸。 $於活塞頭與活塞這樣的斜面設計’在上單向閱關閉 的狀態下’活塞斜面受到活塞頭斜面或氣虹内侧壁對其的 向内的約束力，而不是向外的張力，所以不必擔心活塞的 5 ⑥合線開裂，故可將活塞的密封圈做得較薄、斜面的夾角 做得較小，這樣，不僅增大了密封面積，而且接觸斜面處 的柔性也得到改善，能更好地適應因圓度、同心度、同轴 度造成的不利影響。所以，上單向閥的密封性能得到了明 ㈣改善，即使在使㈣㈣稠的料液的情況下，乳液栗 10 纟易於出液。而且’密封性能的改善使乳液泵中無需較大 的彈簧力就能提供較大的真空度，有利於高枯度料液的吸 出，且按壓手感輕。 此外’本發明的乳液果的其製造和裝配的方法基本與 現有技術的乳液泵相同，完全可以利用傳統的製造設備來 15 1造’所以製造成本也與現有技術的乳液泵相當。 【實施方式】 圖3示意地示出了根據本發明的一乳液泵的結構，除 了上單向閥的結構之外，其基本的結構與圖i所示的傳統 乳液果結構相同。 ㈣4所示乳縣上單向閥放大的視圖中可見，本實 施例的活塞頭與活塞之間的密封設計與傳統設計的不同 在於，活塞頭12下端部肩部的周緣形成有-突緣13，突 緣13内侧形成一向内側傾斜的第一斜面16，活塞14内圈 下端外側形成-向内傾斜的斜面15，並使活塞頭12的斜 1232196 面16與活塞14的斜面15外側相抵接觸。因此，當使用 者將押頭7下壓至下止點後鬆開，活塞頭12和押頭7在 彈簣8的彈力作用下上行重定，並使活塞14推壓在活塞 頭12上時，作用在活塞的密封斜面15上的力是向内向上 的’即，其水平分力是向内的束缚力，而不是原來向外的 張力’所以活塞内圈的熔合線不會開裂。因而可以儘量將 活塞内圈做薄，斜面傾斜角度做小，從而增大密封面積， 改善密封效果。同時，由於活塞内圈做得薄了，所以其柔 性也改善，更易於適應圓度、同心度、同軸度等因素帶來 的影響密封效果的缺陷。 活塞和活塞頭還可以如圖5所示地設計。在圖5所示 的實施例中，不僅活塞頭17下端部的突緣18内側設有一 第一斜面16,以可與活塞内圈下端外側的向内傾斜的斜面 15相抵接觸，而且活塞頭17的突緣18頂部外側還設有一 第二斜面21，以可與活塞的外圈内側的斜面2〇密封地相 抵。本實施例中的活塞頭17的第一斜面15的受力及工作 狀況與第一實施例的第一斜面15相似，也同樣具有良好 岔封性能和其他優點。本實施例的特點在於還設置了一第 二斜面21。儘管活塞頭17的第二斜面21對活塞19的外 圈斜面20施加一個向外的張力，但是由於活塞19的外圈 本身已經抵靠在氣缸丨的内壁上，所以受到氣幻内壁的 約束，活S 19的外圈無法再向外擴展，外圈的熔合線就 不會發生撕裂。不僅如此，活塞頭17的第二斜面21所施 加的張力還全部用作密封壓力，進一步改善了活塞頭π 1232196 與活塞1 9以及活塞1 9與氣缸1的内壁之間的密封效果。 上述的實施例和附圖僅是本發明的示範性實施例，在 氣缸、活塞、活塞頭等的細部設計都可以根據具體的需求 加以改變。在本發明的範圍内，還可以對上述的實施例作 5 出各種的修改和變型，例如，如圖6所示，當活塞24僅 有一密封外圈向下延伸以與活塞頭密封接觸時，活塞頭22 的下端部的突緣23可以僅設置一位於頂端外側的第二斜 面21，該斜面21可與活塞外圈内側的斜面2〇密封地相 抵。由於受到氣缸1的内壁的約束，所以活塞24外圈的 1〇 、熔合線不會發生撕裂，同樣可以取得良好的密封效果。種 種的修改和變型都“所附權利要求書的限㈣保護範 圍之内。 【圓式簡單說明】 圖1是傳統乳液系的結構示意圖，其中局部剖視出氣 15 缸内部的結構； 圖2是圖1所示的傳統乳液泵的上單向閥的放大視 圖， 圖3是根據本發明的乳液泉的結構示意圖，其中局部 剖視出氣缸内部的結構； 20 圖4是根據本發明的乳液泵上罝6 Μ λα _ 艰上早向閥的一實施例的放 大視圖； 圖5是根據本發明的乳液菜上單向閱的另一實施例的 放大視圖；以及 圖6是根據本發明的乳液果上單向間的再一實施例的 1232196 放大視圖。 1232196 【圖式之主要元件代表符號說明】 1 氣缸 14 活塞 2 活塞頭 15 斜面 3 活塞 16 斜面 5 珠子 17 活塞頭 6 下閥座 18 突緣 7 押頭 19 活塞 8 彈簧 20 斜面 9 喷嘴口 21 斜面 10 斜面 22 活塞頭 11 斜面 23 突緣 12 活塞頭 24 活塞 13 突緣 12Lower one-way valve;-Piston head, whose lower end expands outwards to form a shoulder;-Piston 'it has -inner ring and -outer ring' and forms together with piston head-upper soap valve; The head is fixedly connected to the upper end of the piston head; and a spring is located between the lower end of the piston head and the lower one-way valve, and can cooperate with the plunger head so that the piston head can reciprocate in the cylinder; wherein, the lower end of the piston head A flange is formed at the peripheral edge of the shoulder. The flange of the piston head is provided with an inner -slope. The piston is provided with an -slope outside the lower end of the condyle. When the piston head contacts the piston, the first of the piston head is- The inclined surface is in sealing contact with the inclined surface of the piston; or 'the flange of the piston head is provided with a second inclined surface outside the top, and the piston is provided with an inclined surface inside the lower end of the outer ring. When the piston head is in contact with the piston, the second The bevel is in sealing contact with the bevel of the piston. Bevel. When the piston head is in contact with the piston, the first bevel of the piston head is in sealing contact with the bevel outside the lower end of the inner ring. The second bevel of the piston head is in the above emulsion pump. The flange of the piston head can be at the same time. Inner setting-first-bevel and on the outside of the top-second bevel, the piston can be set at the same time outside the lower end of the inner ring-bevel and weave a 7 1232196 bevel on the inner side of the lower end of the outer ring to make sealing contact. The beveled design of the piston head and piston 'in the state of one-way reading and closed' the piston bevel is subject to the inward restraint force of the piston head bevel or the inner side of the gas rainbow, rather than outward tension, so it is not necessary Worry about 5 ⑥ split line of the piston, so the piston sealing ring can be made thinner and the included angle of the inclined surface is made smaller. In this way, not only the sealing area is increased, but also the flexibility at the contact inclined surface is improved, which can be more Well adapted to the adverse effects caused by roundness, concentricity, coaxiality. Therefore, the sealing performance of the upper one-way valve has been significantly improved, and even in the case of making a thick material liquid, the emulsion pump 10 is easy to discharge. Moreover, the improvement of the sealing performance allows a large vacuum degree to be provided in the lotion pump without requiring a large spring force, which is beneficial to the suction of high-dehydration material liquid, and the pressing feel is light. In addition, the method of manufacturing and assembling the emulsion fruit of the present invention is basically the same as that of the prior art emulsion pump, and it is entirely possible to use conventional manufacturing equipment to manufacture it. Therefore, the manufacturing cost is also equivalent to the prior art emulsion pump. [Embodiment] Fig. 3 schematically shows the structure of an emulsion pump according to the present invention. The basic structure is the same as the conventional emulsion fruit structure shown in Fig. I except for the structure of the upper check valve. It can be seen from the enlarged view of the check valve on Ruxian shown in Figure 4 that the seal design between the piston head and the piston of this embodiment is different from the traditional design in that the peripheral edge of the shoulder of the lower end portion of the piston head 12 is formed with a flange 13 A first inclined surface 16 inclined inward is formed on the inner side of the flange 13, and an inward inclined surface 15 is formed on the outside of the lower end of the inner ring of the piston 14, and the inclined 1232196 surface 16 of the piston head 12 is in contact with the outside of the inclined surface 15 of the piston 14. Therefore, when the user presses the plunger 7 down to the bottom dead center and releases it, the piston head 12 and the plunger 7 are reset by the elastic force of the impulse 8 and the piston 14 is pushed against the plunger head 12, The force acting on the sealing slope 15 of the piston is inward and upward, that is, its horizontal component force is the restraining force inward, not the original outward tension, so the fusion line of the inner ring of the piston will not crack. Therefore, the inner ring of the piston can be made as thin as possible, and the inclined angle of the inclined plane can be made small, thereby increasing the sealing area and improving the sealing effect. At the same time, because the inner ring of the piston is made thin, its flexibility is also improved, and it is easier to adapt to defects that affect the sealing effect caused by factors such as roundness, concentricity, and coaxiality. The piston and piston head can also be designed as shown in FIG. 5. In the embodiment shown in FIG. 5, not only the first beveled surface 16 is provided inside the flange 18 at the lower end of the piston head 17 so as to be in contact with the inwardly inclined beveled surface 15 outside the lower end of the inner ring of the piston, but also the piston head 17 A second inclined surface 21 is also provided on the outer side of the top of the flange 18 to seal against the inclined surface 20 on the inner side of the outer ring of the piston. The force and working conditions of the first inclined surface 15 of the piston head 17 in this embodiment are similar to the first inclined surface 15 of the first embodiment, and they also have good bifurcation sealing performance and other advantages. This embodiment is characterized in that a second inclined surface 21 is further provided. Although the second inclined surface 21 of the piston head 17 exerts an outward tension on the outer ring inclined surface 20 of the piston 19, the outer ring of the piston 19 itself is already abutted against the inner wall of the cylinder, so it is constrained by the inner wall of the gas cylinder. The outer ring of the live S 19 can no longer be extended outward, and the fusion line of the outer ring will not tear. Not only that, the tension applied by the second inclined surface 21 of the piston head 17 is also used as the sealing pressure, which further improves the sealing effect between the piston head π 1232196 and the piston 19 and between the piston 19 and the inner wall of the cylinder 1. The above-mentioned embodiments and drawings are merely exemplary embodiments of the present invention, and the detailed design of the cylinder, piston, piston head, etc. can be changed according to specific needs. Within the scope of the present invention, various modifications and variations can also be made to the above-mentioned embodiment. For example, as shown in FIG. 6, when the piston 24 has only one sealing outer ring extending downward to make sealing contact with the piston head, The flange 23 at the lower end portion of the piston head 22 may be provided with only a second inclined surface 21 located outside the top end, and the inclined surface 21 may abut against the inclined surface 20 inside the outer ring of the piston in a sealed manner. Due to the restriction of the inner wall of the cylinder 1, the outer ring 10 of the piston 24 and the fusion line will not tear, and a good sealing effect can also be obtained. Various modifications and variations are “within the protection scope of the appended claims. [Circular description] Figure 1 is a schematic diagram of the structure of a traditional emulsion system, in which the internal structure of a 15-cylinder gas section is partially cut out; Figure 2 is FIG. 1 is an enlarged view of an upper one-way valve of a conventional emulsion pump. FIG. 3 is a schematic structural diagram of an emulsion spring according to the present invention, in which the internal structure of a cylinder is partially cut away. FIG. 4 is an emulsion pump according to the present invention. 6 罝 Μ λα _ An enlarged view of an embodiment of the early check valve; FIG. 5 is an enlarged view of another embodiment of a one-way view of an emulsion dish according to the present invention; and FIG. 6 is an emulsion according to the present invention A 1232196 enlarged view of another embodiment in the unidirectional direction. 1232196 [Description of the main symbols of the drawings] 1 Cylinder 14 Piston 2 Piston head 15 Bevel 3 Piston 16 Bevel 5 Bead 17 Piston head 6 Lower valve seat 18 Edge 7 Charger 19 Piston 8 Spring 20 Bevel 9 Nozzle port 21 Bevel 10 Bevel 22 Piston head 11 Bevel 23 Flange 12 Piston head 24 Piston 13 Flange 12