WO2010078778A1 - 直立自吸式压电陶瓷泵 - Google Patents

直立自吸式压电陶瓷泵 Download PDF

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Publication number
WO2010078778A1
WO2010078778A1 PCT/CN2009/075068 CN2009075068W WO2010078778A1 WO 2010078778 A1 WO2010078778 A1 WO 2010078778A1 CN 2009075068 W CN2009075068 W CN 2009075068W WO 2010078778 A1 WO2010078778 A1 WO 2010078778A1
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WIPO (PCT)
Prior art keywords
pump
valve
chamber
outlet
piece
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PCT/CN2009/075068
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English (en)
French (fr)
Inventor
胡军
Original Assignee
林大伟
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Application filed by 林大伟 filed Critical 林大伟
Publication of WO2010078778A1 publication Critical patent/WO2010078778A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/003—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by piezoelectric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F04B43/043—Micropumps
    • F04B43/046—Micropumps with piezoelectric drive
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/88—Mounts; Supports; Enclosures; Casings

Definitions

  • the present invention relates to a fluid pump, and more particularly to a miniature piezoelectric ceramic pump.
  • the piezoelectric pump utilizes the deformation of the piezoelectric ceramic sheet to cause a change in the volume of the pump chamber, and the liquid in the chamber is squeezed to suck and discharge the liquid. Its working principle determines the high requirements for the design, manufacture and assembly of such pumps.
  • the patent number previously filed by the applicant is 02114470.2, and the bulletin number is CN1 160514C.
  • the name is "ultra-miniature hydraulic electronic pump" is one of them.
  • the patent solves the problems of the prior art solution that the check valve of the pump is easy to block, easy to relieve pressure, and has poor working stability, which prolongs the service life of the pump and increases the output pressure and flow rate of the pump.
  • the pump has the drawback of requiring pumping and venting before working.
  • the object of the present invention is to overcome the deficiencies of the prior art described above, and to provide an upright self-priming piezoelectric ceramic pump which has a good self-priming effect and does not require pumping and exhausting to restart.
  • the solution includes a pump body with an inlet chamber and an outlet chamber, a pump cover and a check valve, which are constructed after the pump body and the pump cover are assembled.
  • a piezoelectric ceramic transducer sheet is mounted in the pump chamber; an insulating pressure-proof protective layer sprayed or wrapped or pasted is attached to the upper and lower surfaces of the piezoelectric ceramic transducer sheet, and an elastic sealant is attached to the outside of the insulating pressure-resistant protective layer.
  • the check valve includes a valve head and a compression spring And the sealing raft, the improvement is: the center line of the inlet chamber and the outlet chamber in the pump body are on the same straight line and respectively located in the pump body a lower portion and an upper portion; a valve seat that cooperates with a valve head of the one-way valve at an outlet of the outlet chamber; a inlet pipe joint and an outlet at an inlet and an outlet of the inlet chamber and the outlet chamber, respectively Liquid pipe joint; the one-way valve is installed in the outlet pipe joint cavity.
  • a valve seat mated with the valve head of the check valve is provided at the inlet of the inlet chamber, and a check valve is also installed in the chamber of the inlet pipe joint.
  • a cantilever beam valve piece which is a copper piece or a spring steel piece having a thickness of 0.1-0.2 mm, one end of which is fixed to the lower part of the side wall of the pump body near the pump chamber side, and One end covers the outlet of the inlet chamber leading to the pump chamber; the side of the cantilever beam valve contacting the outlet is attached with a layer of silicone elastic film which is in a sealed state in contact with the plane of the pump body at the outlet.
  • the cantilever beam valve can also be used in place of the one-way valve in the case where the inlet chamber does not include the above-described one-way valve including the valve head, the compression spring and the sealing port.
  • the cantilever beam valve piece may be a single cantilever beam valve piece, the valve piece has a rectangular small through hole at one end and a circular shape at the other end, the diameter of the circle is slightly larger than the outlet of the inlet chamber to the pump chamber.
  • the two ends are connected by a narrow strip-shaped single cantilever beam in the middle; the small through hole at one end of the valve piece is arranged on the lower part of the side wall of the pump body near the pump chamber side, and the convex section of the rectangular section is matched with it On the column, the end of the valve piece is fixed around the stud with an adhesive.
  • the cantilever beam valve piece may also be a double cantilever beam valve piece, the valve piece has a rectangular shape in the middle, and the middle portion of the rectangular shape includes a punched hollow portion, thereby forming a double cantilever beam of the valve piece, rectangular a semicircular shape is respectively connected to the two ends, the diameter of the semicircle is slightly larger than the diameter of the outlet of the inlet chamber to the pump chamber; and two circular through holes are provided in the lower part of the valve piece, the small passage The hole is set on the two cylinders which are disposed on the lower side of the side wall of the pump body near the pump chamber side, and the end of the valve piece is fixed around the two cylinders with an adhesive.
  • the valve head in the one-way valve described above may be a spherical end or a tapered end or a flat end.
  • the pump uses a vertical design to make the pump respond quickly. Even if only one check valve is installed in the outlet pipe joint, it is not necessary to install a check valve in the inlet pipe joint. Working normally, which simplifies the structure and reduces costs;
  • the pump has a wide range of applications, can be applied to the aerospace industry, automotive industry, liquid fuel, fine chemicals, home smart accessories, household appliances, laptop desktop computer CPU cooling, instrumentation, precision metering, medical Equipment, biomedical, inkjet printing, industrial automation, agricultural spray drip irrigation and other fields.
  • FIG. 1 is a schematic structural view of Embodiment 1 of the present invention.
  • Figure 2 is a schematic view showing the structure of a second embodiment of the present invention.
  • Figure 3 is an exploded perspective view of the structure of Figure 2.
  • Fig. 4 is a schematic view showing the structure of a third embodiment of the present invention.
  • Fig. 5 is a schematic structural view of Embodiment 4 of the present invention.
  • Figure 6 is an exploded perspective view of the structure of Figure 5.
  • Figure 7 is a cross-sectional view showing the structure of the water inlet pipe joint and the water outlet pipe joint in the first embodiment.
  • Figure 8 is a cross-sectional view showing the structure of the water inlet pipe joint and the water outlet pipe joint in the third embodiment.
  • Figure 9 is a cross-sectional view taken along line A-A of Figures 7 and 8.
  • Figure 10 (a) is a perspective view of the spherical valve head of the check valve in the above embodiment
  • Figure 10 (b) is a front view of the valve head.
  • Figure 11 (a) is a perspective view of the tapered valve head of the check valve in the above embodiment
  • Figure 11 (b) is a front view of the valve head.
  • Figure 12 (a) is a perspective view of the flat valve head of the check valve in the above embodiment
  • Figure 12 (b) is a front elevational view of the valve head.
  • Figure 13 (a) is a front elevational view of the single cantilever beam valve in the above embodiment;
  • Fig. 13(b) is an enlarged partial cross-sectional view of A_A of Fig. 13(a).
  • Figure 14 (a) is a front elevational view of the double cantilever beam valve in the above embodiment
  • Fig. 14 (b) is an enlarged partial cross-sectional view of the A_A of Fig. 14 (a).
  • Figure 15 is an enlarged schematic view of a piezoelectric ceramic sheet and its adhesion layer.
  • Embodiment 1 See Fig. 1, Fig. 3, and Fig. 15.
  • the pump B1 of the present embodiment includes a pump body 1, a pump cover 6, and a check valve 3 with an inlet chamber 1.1 and an outlet chamber 1.2, and a pressure is formed in the pump chamber formed after the pump body 1 and the pump cover 6 are assembled.
  • Electric ceramic transducer sheet 7. The outer surface of the insulating and pressure-resistant protective layer 7.1 is attached with an elastic sealant layer 7.1. 2 (See Fig.
  • the piezoelectric ceramic transducer plate 7 is connected to the power supply through two wires 4;
  • the check valve 3 includes a valve head 3.2, a compression spring 3.1 and a sealing ⁇ 3.3.
  • the valve head in one-way feed 3 can be a spherical end (see Figure 10) or a tapered end 3.21 (see Figure 11) or a flat end 3.22 (see Figure 12).
  • the inlet line 1.1 of the pump body B1 and the center line of the outlet chamber 1.2 are on the same straight line and are respectively located at the lower and upper portions of the pump body 1; and the check valve is provided at the outlet of the outlet chamber 1.2
  • the valve head 3.2 is fitted with a valve seat 3.4, and an inlet pipe joint 10 and an outlet pipe joint 2 are respectively installed at the inlet and outlet of the inlet chamber 1.1 and the outlet chamber 1.2; the check valve 3 is installed in the outlet The inside of the cavity of the pipe joint 2.
  • Embodiment 2 see Fig. 2.
  • the pump B2 of the present embodiment differs from the embodiment 1 only in that the inlet of the inlet chamber 1.1 is also provided with a valve seat 3.4 that cooperates with the valve head 3.2 of the check valve 3, and at the inlet pipe joint 10 A one-way valve 3 is also mounted in the chamber.
  • the inlet pipe joint 10 and the outlet pipe joint 2 and the pump body 1 can be used as the inner hole of the joint as shown in Fig. 4 and Fig. 8.
  • 34 inner vertical bars 2.3 may be circumferentially disposed on the inner walls of the inlet pipe joint 10 and the outlet pipe joint 2, and the inner diameter of these vertical bars 2.3 is slightly larger than that of the spring 3.1. The outer diameter, thereby positioning the spring to prevent it from tilting during movement.
  • Embodiment 4 see Fig. 5, Fig. 6, Fig. 13 and Fig. 14.
  • the pump B4 of the present embodiment differs from the above-described embodiments 1, 2 and 3 only in that there is also a cantilever beam valve piece 11, which is a copper piece or a spring steel piece having a thickness of 0.1 - 0.2 mm, which is fixed at one end.
  • a cantilever beam valve piece 11 which is a copper piece or a spring steel piece having a thickness of 0.1 - 0.2 mm, which is fixed at one end.
  • the other end is placed on the outlet 1.4 of the inlet chamber 1.1 leading to the pump chamber.
  • the above-mentioned cantilever beam valve piece 11 may be a single cantilever beam valve piece, the valve piece having a rectangular small through hole 11.1 at one end and a circular shape 11.3 at the other end, the diameter of the circular shape 11.3 is slightly larger than the liquid inlet
  • the diameter of the chamber leading to the outlet 1.4 of the pump chamber is connected by a narrow strip-shaped single cantilever 11.2 in the middle; the small through hole 11.1 at one end of the valve plate is placed on the lower side of the side wall of the pump body 1 near the pump chamber side
  • the protrusions 1.3 of the rectangular cross section are provided, and the end of the valve piece 11 is fixed around the studs 1.3 with an adhesive.
  • the foregoing cantilever beam valve piece 11 may also be a double cantilever beam valve piece 111.
  • the center of the valve piece 111 is a rectangle, and the middle portion of the rectangular shape includes a punched hollow portion 111.4, thereby forming the valve piece.
  • the double cantilever beam 111.2, the two ends of the rectangle are respectively connected with a semicircular 111.3, the diameter of the semicircle 111.3 is slightly larger than the diameter of the outlet 1.4 of the inlet chamber to the pump chamber; and the lower portion of the valve piece 111 is provided Two small small through holes 111.1.
  • the two small through holes 111.1 are fitted with two cylinders (not shown) disposed at a lower portion of the side wall of the pump body 1 near the pump chamber side. Upper, and the end of the valve plate is fixed around the two cylinders with an adhesive.
  • the structure of the double cantilever beam valve constitutes Embodiment 5 of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Description

说明书
Title of Invention:直立自吸式压电陶瓷泵 技术领域
技术领域
[1] 本发明涉及一种流体泵， 尤其是一种微型的压电陶瓷泵。
背景技术
背景技术
[2] 压电泵是利用压电陶瓷片的绕曲变形导致泵腔容积的变化， 对腔体内的液体产 生挤压作用而吸入和排出液体。 其工作原理决定了对该类泵的设计、 制造和装 配有较高的要求。 本专利申请人在先申请的专利号为 02114470.2， 公告号为 CN1 160514C, 名称为 "超微型液压式电子泵"即是其中的一种。 该专利解决了先前技 术方案泵的单向阀易堵塞、 易泄压， 工作稳定性差等问题， 延长了泵的使用寿 命， 提高了泵的输出压力和流量。 但是， 该泵存在着工作前需要进行灌泵排气 的缺陷。
对发明的公开
技术问题
[3] 本发明的目的是克服以上现有技术存在的不足， 而提供一种自吸效果好、 不需 灌泵排气再启动的直立自吸式压电陶瓷泵。
技术解决方案
[4] 为了实现上述的目的， 可以釆用以下的技术方案： 本方案包括带有进液腔和出 液腔的泵体、 泵盖和单向阀， 在泵体和泵盖装配后构成的泵腔中装有压电陶瓷 换能片； 压电陶瓷换能片的上面和下面附着有一喷涂或包裹或粘贴上的绝缘耐 压保护层， 在绝缘耐压保护层的外面附着有一弹性密封胶层， 并且在该弹性密 封胶层周边的外面分别装有一防水绝缘密封圏， 从而使压电陶瓷换能片与泵体 和泵盖密封， 形成液体流通腔； 单向阀包括阀头、 压缩弹簧和密封圏， 其改进 是： 所述的泵体中的进液腔和出液腔的中心线在同一个直线上并分别位于泵体 的下部和上部； 在出液腔的出口处设有与单向阀的阀头配合的阀座； 在进液腔 和出液腔的进口和出口处分别装有一个进液管接头和一个出液管接头； 所述的 单向阀装在出液管接头腔内。
[5] 进一步地， 在进液腔的进口处还设有与单向阀的阀头配合的阀座， 并且在进液 管接头的腔内还装有一个单向阀。
[6] 更进一步地， 还有一个悬臂梁阀片， 该阀片是厚度为 0.1-0.2毫米的铜片或弹簧 钢片， 其一端固定在泵体靠近泵腔侧的侧壁的下部， 另一端覆盖在进液腔通往 泵腔的出口上； 悬臂梁阀片接触该出口的一面， 附着有一层硅胶弹性薄膜片， 与泵体该出口处平面接触吋呈密封状态。
[7] 该悬臂梁阀片也可以在进液腔不装上述包含阀头、 压缩弹簧和密封圏的单向阀 的情况下， 用该阀片来代替此单向阀。 上述的悬臂梁阀片可以是一个单悬臂梁 阀片， 该阀片的一端包含一个矩形的小通孔， 另一端为圆形， 该圆形的直径略 大于进液腔通往泵腔的出口直径， 该两端靠中间的一个窄条形的单悬臂梁连接 起来； 阀片一端的小通孔套装在泵体靠近泵腔侧的侧壁的下部设置的、 与其相 配合的矩形截面的凸柱上， 并用粘接剂将该阀片的此端固定在凸柱的周围。 上 述的悬臂梁阀片也可以是一个双悬臂梁阀片， 该阀片的中部为一个矩形， 该矩 形的中部包含一个冲切出的空心部， 从而形成该阀片的双悬臂梁， 矩形的两端 分别连有一个半圆形， 该半圆形的直径略大于进液腔通往泵腔的出口的直径； 在该阀片的下部设有两个圆形的小通孔， 该小通孔套装在泵体靠近泵腔侧的侧 壁的下部设置的、 与其相配合的两个圆柱上， 并用粘接剂将该阀片的此端固定 在两个圆柱的周围。 上面所述的单向阀中的阀头可以是球形端头或锥形端头或 平形端头。
[8] 前述的进液管接头和出液管接头与泵体之间可以用螺栓联结在一起， 或者釆用 过渡配合的方式插接在一起。 使用吋， 将本泵的进液管接头插入液体中并把泵 直立放置， 在不需灌泵的情况下， 就可以将液体顺利泵出。
有益效果
[9] 本发明的有益效果是：
[10] 1、 本泵由于釆用了直立式的设计方式， 使单向阀的密封效果大大增强， 自吸 效果好， 因此不需灌泵排气就可以直接启动， 大大方便了使用者；
[11] 2、 本泵由于釆用了直立式的设计方式， 使泵的响应速度快， 即使只在出水管 接头中装一个单向阀， 而不必在进水管接头中装单向阀也会正常地工作， 从而 简化了结构， 降低了成本；
[12] 3、 本泵的设计方式缩小了泵的体积， 可适用于对泵的体积要求更小的场合； [13] 4、 本泵可以潜水使用， 也可以不潜水使用；
[14] 5、 如果本泵增设了悬臂梁阀后， 会使其工作效率更高， 工作更加稳定， 使用 寿命更长；
[15] 6、 本泵使用范围宽， 可应用于航空航天工业、 汽车制造业、 液体燃料、 精细 化工、 家庭智能饰品配套、 家用电器、 笔记本电脑台式计算机 CPU冷却、 仪器仪 表、 精密计量、 医疗器械、 生物医学、 喷墨打印、 工业自动化、 农用喷淋滴灌 等领域。
附图说明
[16] 图 1是本发明的实施例 1的结构示意图。
[17] 图 2是本发明的实施例 2的结构示意图。
[18] 图 3是图 2结构的分解示意图。
[19] 图 4是本发明的实施例 3的结构示意图。
[20] 图 5是本发明的实施例 4的结构示意图。
[21] 图 6是图 5结构的分解示意图。
[22] 图 7是实施例 1中的进水管接头和出水管接头的结构剖面图。
[23] 图 8是实施例 3中的进水管接头和出水管接头的结构剖面图。
[24] 图 9是图 7和图 8的 A— A剖面图。
[25] 图 10(a)是上述实施例中单向阀的球形阀头的立体示意图；
[26] 图 10(b)是该阀头的主视示意图。
[27] 图 11 (a)是上述实施例中单向阀的锥形阀头的立体示意图；
[28] 图 11(b)是该阀头的主视示意图。
[29] 图 12(a)是上述实施例中单向阀的平形阀头的立体示意图；
[30] 图 12(b)是该阀头的主视示意图。 [31] 图 13(a)是上述实施例中的单悬臂梁阀片的主视示意图；
[32] 图 13(b)是图 13(a)的 A_A局部剖面放大图。
[33] 图 14(a)是上述实施例中的双悬臂梁阀片的主视示意图；
[34] 图 14(b)是图 14(a)的 A_A局部剖面放大图。
[35] 图 15是压电陶瓷片和其附着层的放大示意图。
本发明的实施方式
[36] 为了使本发明便于理解和更加清晰， 下面通过附图和实施例对其作进一步说明
[37] 实施例 1， 参看图 1、 图 3和图 15。 本实施例的泵 B1包括带有进液腔 1.1和出液腔 1.2的泵体 1、 泵盖 6和单向阀 3， 在泵体 1和泵盖 6装配后构成的泵腔中装有压电陶 瓷换能片 7。 压电陶瓷换能片 7的上面和下面附着有一喷涂或包裹或粘贴上的绝 缘耐压保护层 7.1 (见图 15)， 在绝缘耐压保护层 7.1的外面附着有一弹性密封胶层 7. 2(见图 15)， 并且在该弹性密封胶层 7.2周边的外面分别装有一防水绝缘密封圏 5， 从而使压电陶瓷换能片 7与泵体 1和泵盖 6密封， 形成液体流通腔； 压电陶瓷换能 片 7通过两根导线 4与电源相连接； 单向阀 3包括阀头 3.2、 压缩弹簧 3.1和密封圏 3. 3。 单向飼 3中的阀头可以是球形端头 (见图 10)或锥形端头 3.21(见图 11)或平形端 头 3.22(见图 12)。
[38] 泵体 B1中的进液腔 1.1和出液腔 1.2的中心线在同一个直线上并分别位于泵体 1的 下部和上部； 在出液腔 1.2的出口处设有与单向阀的阀头 3.2配合的阀座 3.4， 在进 液腔 1.1和出液腔 1.2的进口和出口处分别装有一个进液管接头 10和一个出液管接 头 2; 单向阀 3装在出液管接头 2的腔内。
[39] 进液管接头 10和出液管接头 2与泵体 1之间可以如图 1和图 7所示用螺栓通过螺栓 孔 2.1将二者联结在一起。
[40] 实施例 2， 参看图 2。 本实施例的泵 B2与实施例 1的区别仅仅是在进液腔 1 . 1的 进口处也设有一个与单向阀 3的阀头 3.2配合的阀座 3.4， 并且在进液管接头 10的 腔内还装有一个单向阀 3。
[41] 进液管接头 10和出液管接头 2与泵体 1之间可以如图 4和图 8所示釆用接头的内孔
21.1与泵体的上下端头过渡配合的方式插接在一起， 此种结构构成了本发明的实 施例 3的泵 B3。
[42] 此外， 在进液管接头 10和出液管接头 2的内壁上可以沿圆周设置 3 4个凸起的竖 条 2.3(见图 9)， 这些竖条 2.3的内径略大于弹簧 3.1的外径， 从而对该弹簧起到定位 的作用， 防止其在运动中的倾斜。
[43] 实施例 4， 参看图 5、 图 6、 图 13和图 14。 本实施例的泵 B4与上述实施例 1、 2和 3 的区别仅在于还有一个悬臂梁阀片 11， 该阀片 11是厚度为 0.1-0.2毫米的铜片或弹 簧钢片， 其一端固定在泵体 1靠近泵腔侧的侧壁的下部， 另一端覆盖在进液腔 1.1 通往泵腔的出口 1.4上。
[44] 上述的悬臂梁阀片 11可以是一个单悬臂梁阀片， 该阀片的一端包含一个矩形的 小通孔 11.1， 另一端为圆形 11.3， 该圆形 11.3的直径略大于进液腔通往泵腔的出 口 1.4的直径， 该两端靠中间的一个窄条形的单悬臂 11.2连接起来； 阀片一端的 小通孔 11.1套装在泵体 1靠近泵腔侧的侧壁的下部设置的、 与其相配合的矩形截 面的凸柱 1.3上， 并用粘接剂将该阀片 11的此端固定在凸柱 1.3的周围。
[45] 前述的悬臂梁阀片 11也可以是一个双悬臂梁阀片 111， 该阀片 111的中部为一个 矩形， 该矩形的中部包含一个冲切出的空心部 111.4， 从而形成该阀片的双悬臂 梁 111.2， 矩形的两端分别连有一个半圆形 111.3， 该半圆形 111.3的直径略大于进 液腔通往泵腔的出口 1.4的直径； 在该阀片 111的下部设有两个圆形的小通孔 111. 1， 该两个小通孔 111.1套装在泵体 1靠近泵腔侧的侧壁的下部设置的、 与其相配 合的两个圆柱 (图中未示出)上， 并用粘接剂将该阀片的此端固定在两个圆柱的周 围。 本双悬臂梁阀片的结构构成了本发明的实施例 5。
[46] 以上仅为本发明之较佳实施例， 但其并不限制本发明的实施范围， 即不偏离本 发明的权利要求所作之等同变化与修饰， 仍应属于本发明之保护范围。

Claims

权利要求书
[Claim 1] 一种直立自吸式压电陶瓷泵， 包括带有进液腔和出液腔的泵体、 泵盖和单向阀， 在泵体和泵盖装配后构成的泵腔中装有压电陶瓷 换能片； 压电陶瓷换能片的上面和下面附着有一喷涂或包裹或粘 贴上的绝缘耐压保护层， 在绝缘耐压保护层的外面附着有一弹性 密封胶层， 并且在该弹性密封胶层周边的外面分别装有一防水绝 缘密封圏， 从而使压电陶瓷换能片与泵体和泵盖密封， 形成液体 流通腔； 单向阀包括阀头、 压缩弹簧和密封圏， 其特征是： 所述 的泵体中的进液腔和出液腔的中心线在同一个直线上并分别位于 泵体的下部和上部； 在出液腔的出口处设有与单向阀的阀头配合 的阀座； 在进液腔和出液腔的进口和出口处分别装有一个进液管 接头和一个出液管接头； 所述的单向阀装在出液管接头腔内。
[Claim 2] 根据权利要求 1所述的直立自吸式压电陶瓷泵， 其特征是在进液腔 的进口处设有与单向阀的阀头配合的阀座， 并且在进液管接头的 腔内还装有一个单向阀。
[Claim 3] 根据权利要求 2所述的直立自吸式压电陶瓷泵， 其特征是还有一个 悬臂梁阀片， 该阀片是厚度为 0.1_0.2毫米的铜片或弹簧钢片， 其 一端固定在泵体靠近泵腔侧的侧壁的下部， 另一端覆盖在进液腔 通往泵腔的出口上； 悬臂梁阀片接触该出口的一面， 附着有一层 硅胶弹性薄膜片， 与泵体该出口处平面接触吋呈密封状态。
[Claim 4] 根据权利要求 3所述的直立自吸式压电陶瓷泵， 其特征是所述的悬 臂梁阀片是一个单悬臂梁阀片， 该阀片的一端包含一个矩形的小 通孔， 另一端为圆形， 该圆形的直径略大于进液腔通往泵腔的出 口的直径， 该两端靠中间的一个窄条形的单悬臂梁连接起来； 阀 片一端的小通孔套装在泵体靠近泵腔侧的侧壁的下部设置的、 与 其相配合的矩形截面的凸柱上， 并用粘接剂将该阀片的此端固定 在凸柱的周围。
[Claim 5] 根据权利要求 3所述的直立自吸式压电陶瓷泵， 其特征是所述的悬 臂梁阀片是一个双悬臂梁阀片， 该阀片的中部为一个矩形， 该矩 形的中部包含一个冲切出的空心部， 从而形成该阀片的双悬臂梁 ， 矩形的两端分别连有一个半圆形， 该半圆形的直径略大于进液 腔通往泵腔的出口的直径； 在该阀片的下部设有两个圆形的小通 孔， 该两个小通孔套装在泵体靠近泵腔侧的侧壁的下部设置的、 与其相配合的两个圆柱上， 并用粘接剂将该阀片的此端固定在两 个圆柱的周围。
根据权利要求 1所述的直立自吸式压电陶瓷泵， 其特征是还有一个 悬臂梁阀片， 该阀片是厚度为 0.1_0.2毫米的铜片或弹簧钢片， 其 一端固定在泵体靠近泵腔侧的侧壁的下部， 其另一端覆盖在进液 腔通往泵腔的出口上； 悬臂梁阀片接触该出口的一面， 附着有一 层硅胶弹性薄膜片， 与泵体该出口处平面接触吋呈密封状态。 根据权利要求 6所述的直立自吸式压电陶瓷泵， 其特征是所述的悬 臂梁阀片是一个单悬臂梁阀片， 该阀片的一端包含一个矩形的小 通孔， 另一端为圆形， 该圆形的直径略大于进液腔通往泵腔的出 口的直径， 该两端靠中间的一个窄条形的单悬臂连接起来； 阀片 一端的小通孔套装在泵体靠近泵腔侧的侧壁的下部设置的、 与其 相配合的矩形截面的凸柱上， 并用粘接剂将该阀片的此端固定在 凸柱的周围。
根据权利要求 6所述的直立自吸式压电陶瓷泵， 其特征是所述的悬 臂梁阀片是一个双悬臂梁阀片， 该阀片的中部为一个矩形， 该矩 形的中部包含一个冲切出的空心部， 从而形成该阀片的双悬臂梁 ， 矩形的两端分别连有一个半圆形， 该半圆形的直径略大于进液 腔通往泵腔的出口的直径； 在该阀片的下部设有两个圆形的小通 孔， 该两个小通孔套装在泵体靠近泵腔侧的侧壁的下部设置的、 与其相配合的两个圆柱上， 并用粘接剂将该阀片的此端固定在两 个圆柱的周围。
根据权利要求 1_8中任意一项所述的直立自吸式压电陶瓷泵， 其 特征是所述的单向阀中的阀头是球形端头或锥形端头或平形端头
[Claim 10] 根据权利要求 9所述的直立自吸式压电陶瓷泵， 其特征是所述的进 液管接头和出液管接头与泵体之间用螺栓联结在一起， 或者釆用 过渡配合的方式插接在一起。
PCT/CN2009/075068 2009-01-09 2009-11-20 直立自吸式压电陶瓷泵 WO2010078778A1 (zh)

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