WO2010078700A1 - 手持式清洗机 - Google Patents

手持式清洗机 Download PDF

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Publication number
WO2010078700A1
WO2010078700A1 PCT/CN2009/000300 CN2009000300W WO2010078700A1 WO 2010078700 A1 WO2010078700 A1 WO 2010078700A1 CN 2009000300 W CN2009000300 W CN 2009000300W WO 2010078700 A1 WO2010078700 A1 WO 2010078700A1
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WO
WIPO (PCT)
Prior art keywords
pump body
water
driven
hydraulic gear
shaft
Prior art date
Application number
PCT/CN2009/000300
Other languages
English (en)
French (fr)
Inventor
金可友
Original Assignee
浙江创美机电有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江创美机电有限公司 filed Critical 浙江创美机电有限公司
Publication of WO2010078700A1 publication Critical patent/WO2010078700A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
    • B05B9/0861—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1094—Water

Definitions

  • the invention relates to a hand-held washing machine. Mainly used in automotive cleaning, wall cleaning and other fields. Background technique
  • high-pressure cleaners are usually pressurized by a plunger pump to form high-pressure water.
  • the working principle is as follows: the high-speed rotating cam pushes three uniformly distributed plungers for high-frequency reciprocating motion, and the water is pressurized by the compression of the plunger, so that the pump body is discharged with a significant pressure, thereby generating cleaning. High pressure water.
  • a "handheld car washing machine” (patent number: 2006201413290), which has been disclosed by the applicant, includes a motor, and the working surface with the motor drive shaft fixed and fixed is a diagonal curved surface of the inclined wave wheel and The ramp wheel pushes a plunger assembly comprising a plurality of sets of plungers, plunger springs, and a waterproofing device disposed on the motor housing.
  • the plunger assembly is mounted in a cylinder fixedly connected by a plunger seat, a cylinder and a cylinder block, and a pump body is fixedly coupled to the plunger seat, and a plurality of plunger bodies corresponding to the plunger and the plunger cavity are opened in the pump body.
  • each inlet is provided with a water inlet check valve and a water outlet check valve for controlling the inlet and outlet water
  • nozzles and handles are respectively arranged on the front and rear lower sides of the pump body, respectively, in the nozzle and the handle
  • a water outlet channel and a water inlet passage are formed through the water flow passages.
  • the motor rotates and decelerates by the deceleration device.
  • the motor drive shaft drives the ramp wheel to rotate, and the three plungers are moved forward by the working surface of the ramp wheel. Each time the ramp wheel rotates, the three plungers are sequentially made.
  • the axial reciprocating motion is performed once, and the pumping pressurization is completed by the action of two one-way valves, and the low-pressure water source in the pump is pressed into the high-pressure water outlet area to generate a high-pressure water column.
  • a "straight-through unloading type high pressure cleaner" disclosed in the announcement No. CN2551777, which comprises a low-pressure inlet unidirectional wide and high-pressure outlet check valve which are arranged on the same pump cover and are horizontally and vertically respectively. layout.
  • an inner cylinder block At the left end of the water pump casing, there is an inner cylinder block that cooperates with the plunger, and an oil seal for isolating water and lubricating oil and a plunger composed of a plunger, a plunger spring and a plunger spring support seat are disposed therebetween.
  • a thrust ball bearing assembly consisting of a raceway plate, a raceway assembly, and a flat cam, as well as a water pump casing, a motor, a pump cover, and a relief valve.
  • the motor rotates to drive the planar cam for rotary motion.
  • the cam and the thrust ball bearing assembly consisting of the raceway plate, the raceway assembly and the planar cam comprise three sets of plungers, plunger springs and plunger spring support seats.
  • the plunger assembly is axially moved forward; and under the action of three plunger springs, respectively, the rearward axial reset motion is respectively performed; when the plunger is axially moved forward, the low pressure water inlet check valve is closed.
  • the high-pressure check valve When the high-pressure check valve is opened, the low-pressure water source in the pump is pressed into the high-pressure water outlet area.
  • the plunger When the plunger is under the action of the plunger spring, respectively, the axial axial reset motion is sequentially performed, and the high-pressure check valve is under pressure. Closed, at the same time, the low-pressure inlet check valve is opened, and low-pressure water is injected into the pump, so that each time the axial reciprocating motion is performed, the pump will be The inner low pressure water source is pressed into the high pressure water discharge zone, and thus reciprocates.
  • the present invention provides a structure for a washing machine that produces high-pressure water by other means, and which makes the structure of the washing machine simpler. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a hand-held cleaning machine that forms a high pressure by gear meshing and high-speed rotation, and makes the water inlet of the washing machine faster and simpler in structure.
  • the technical solution adopted by the present invention to solve the above technical problems is as follows:
  • the hand-held cleaning machine mainly comprises a motor, a reducer, a pump body, a nozzle and a handle, and the nozzle and the handle are respectively disposed at a front side and a rear side of the pump body, A water outlet passage and a water inlet passage extending through the water flow passage in the pump body are respectively disposed in the nozzle and the handle, wherein: the pump body is provided with a main drive shaft and at least one driven shaft, and the main drive shaft and the main drive shaft are The reducer is connected to the drive shaft, and an active hydraulic gear is fixed on the main drive shaft, and the gear is meshed with the driven hydraulic gear fixed on the driven shaft; the pump body is provided with inlet and outlet waters constituting the water flow passage The cavity, and the inlet and outlet cavities penetrate with the cavity of the active hydraulic gear on the main drive shaft and the driven hydraulic gear on the driven shaft, thereby utilizing the engagement of the active hydraulic gear and the driven hydraulic gear and rotating at
  • the pump body is further provided with a reflux pressure relief cavity communicating with the water inlet cavity, and a pressure relief return valve is arranged in the passage of the reflux pressure relief cavity to communicate the nozzle water, and the pressure is returned through the pressure relief. Wide adjustment, and increase the safety protection of the machine.
  • the main transmission shaft and the driven shaft are both mounted in a cavity formed by a combination of the pump body and the pump base through a bearing and an oil seal, and the upper end of the main transmission shaft passes through the pump base, and the motor output shaft is driven.
  • a connected reduction gear is provided on the drive shaft.
  • the driven shaft is provided as one.
  • the invention Compared with the prior art, the invention has the advantages that: the invention utilizes gear meshing and high-speed rotation to form a high pressure, and has novel design, and has a simple structure compared with the existing plunger pump, thereby also making the volume of the cleaning machine smaller and the weight is changed.
  • the pump body is equipped with an adjustable pressure relief return valve, which also increases the safety protection performance of the machine;
  • the method of water inlet and front water outlet directly controls the operation of the pump body through the opening and closing of the motor, and the operation is convenient and simple; and the inlet pipe and the handle are combined into one, so that the shape of the washing machine is more compact, light and beautiful;
  • the waterproof device can make the channel only enter the wind and can not enter the water, prevent 360° water spray, and realize the internal cooling of the series motor, thereby reducing the weight and volume of the motor, improving the efficiency of the motor and saving energy.
  • FIG. 1 is a perspective exploded view of an embodiment of the present invention.
  • FIG. 2 is a schematic structural view of an embodiment of the present invention.
  • FIG. 3 is a schematic view showing the appearance of an embodiment of the present invention. detailed description
  • the hand-held cleaning machine is mainly composed of a motor 11, a speed reducer 10, a gear pump, a nozzle 1 and a handle 4, etc., wherein:
  • the motor 11 is a series-excited motor and is powered by either AC 220 V or DC 12 V. Therefore, this washing machine has the features of both household power and vehicle power, and is easy to use.
  • the power output of the motor 11 is transmitted through the reducer 10 to the main drive shaft 7 mounted in the pump body.
  • a louvered air intake hole is formed in the motor portion corresponding to the inner portion of the motor casing, and the air inlet hole has a labyrinth structure.
  • the inside of the motor casing is provided with a corrugated inner casing which is combined with the louvered air inlet hole and the louvered air inlet hole on the outer casing is filled with an appropriate amount of sponge. Water leakage holes are respectively provided in the upper and lower portions of the outer casing.
  • the inner and outer louver leaf air intake holes constitute a special labyrinth waterproof device of the washing machine, which utilizes the gravity effect of water to waterproof through the double waterproof function of the two louvered air intake holes, so that the passage It can only enter the wind and not enter the water, prevent 360° water spray, and realize the internal cooling of the series motor, thus reducing the weight and volume of the motor, improving the efficiency of the motor and saving energy.
  • the pump body of the gear pump 3 is provided with a pump base at the rear, and the two are fastened together by screws.
  • the speed reducer 10 is located behind the pump base 9, and the two are also screwed, and the speed reducer 10 is fastened to the motor 11 by screws.
  • the main drive shaft 7, the driven shaft 13 and the driving hydraulic gear 8, the driven hydraulic gear 12, and the like for forming a high pressure are installed in a cavity formed by the combination of the pump body 3 and the pump base 9, and the cavity is disposed in the pump
  • the water inlet cavity 19 at the lower portion of the rear side of the body and the water outlet cavity 15 at the upper portion of the front side together constitute a water flow passage of the pump body, the passage passing through the water inlet passage 18 on the handle and the water outlet passage 14 on the nozzle.
  • the driven shaft 13 may be one or more, but one is preferred.
  • the driven shaft 13 and the main drive shaft 7 are disposed in parallel in the pump body 3 through the bearing 5 and the oil seal 6, and the upper end of the main drive shaft 7 passes through the pump base, and a reduction gear 16 is mounted thereon, and the reduction gear 16 is connected.
  • An active hydraulic gear 8 and a driven hydraulic gear 12 are fixed to the main drive shaft 7 and the driven shaft 13, respectively, and the two gears mesh with each other.
  • the motor output shaft 17 drives the main drive shaft 7 through the reduction gear 16 to rotate, and the active hydraulic gear 8 that rotates with the main drive shaft 7 drives the driven hydraulic gear 12 to rotate.
  • a reflux pressure relief cavity 20 communicating with the water inlet cavity 19 is further provided, and the pressure relief type is reflowed.
  • a pressure relief return valve 21 is disposed in the passage of the chamber 20 to communicate with the nozzle water, and the safety protection performance of the machine is increased by the adjustment of the pressure relief return valve 21.
  • the nozzle 1 is coupled to the front portion of the pump body 3 by screws, and a sealing ring 2 is disposed on the joint surface of the pump body.
  • the nozzle 1 is provided with a water outlet passage 14, a water outlet cavity 15 penetrating the pump body, and a reflux pressure relief cavity 20.
  • the spray distance and area of the washer can be achieved by adjusting the nozzle. By lengthening the nozzle length, the spray distance of the washer can be increased.
  • the handle 4 is mounted on the lower side of the rear portion of the pump body 3.
  • the handle 4 is formed with a water inlet passage 18 which penetrates the water inlet cavity 19 of the pump body.
  • the bottom end of the handle 4 is provided with a water inlet connector for connecting the water pipe, and the anaerobic glue is provided between the water inlet connector and the handle and between the handle and the pump body to ensure the sealing at the joint.
  • the inlet pipe and the handle of the washing machine are combined into one, and the appearance is simple, light and beautiful.
  • the cleaning machine composed of the above components is assembled like a hand-held impact drill, so that the invention has a novel structure and a light and beautiful appearance compared with the existing washing machine.
  • the working principle is as follows:
  • the motor rotates and is decelerated by the reducer to drive the main drive shaft to rotate.
  • the active hydraulic gear on the main drive shaft drives the driven hydraulic gear on the driven shaft to rotate together.
  • the water side is generated due to the meshing rotation of the two gears.
  • the volume is reduced, and the flow of water from the gap between the gear and the cavity back to the inlet side cannot completely offset the pressure formed by this volume reduction, thereby forming a high pressure on the water outlet side, generating a high pressure water column, and achieving the purpose of high pressure cleaning.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Description

手持式清洗机 技术领域
本发明涉及一种手持式清洗机。 主要适用于汽车清洗、 墙面清洗等领域。 背景技术
目前的各式高压清洗机通常都是采用柱塞泵增压形成高压水。其工作原理是：高速 旋转的凸轮推动三个均布的柱塞作高频往返运动， 通过柱塞的压缩给进水增压， 使得泵 体出水得到一个明显的增压， 从而产生了清洗用的高压水。
如本申请人已经公布的一种 "手持式汽车清洗机"（专利号为： 2006201413290)， 其包括有电机， 与电机传动轴连接固定的工作表面为斜状弧形面的斜波轮以及由斜波轮 推动的包含有多组柱塞、 柱塞弹簧组成的柱塞总成， 以及设在电机外壳上的防水装置。 其中柱塞总成装在由柱塞座、 油缸及油缸座结合固定的缸体内， 柱塞座上结合固定有一 泵体， 泵体内开设有多个与柱塞相对应并与柱塞腔体贯通的水流通道， 每一通道内均装 置有用来控制进出水的进水单向阀和出水单向阀，在泵体的前部和后部下侧分别装有喷 嘴和手柄， 喷嘴及手柄内分别开设有与所述各水流通道贯通的出水通道和进水通道。 电 机转动， 并经减速装置减速， 由电机传动轴带动斜波轮旋转， 并通过斜波轮的工作表面 推动三根柱塞向前作轴向运动，斜波轮每旋转一圈，三根柱塞依次作轴向往复运动一次， 利用两个单向阀的作用完成抽水增压， 将泵内的低压水源压入至高压出水区， 产生高压 水柱。
又如公告号为 CN2551777公开的一种 "直通卸荷式高压清洗机"， 它包括低压进水 单向阔、 高压出水单向阀， 它们被布置在同一泵盖上， 并分别是水平和垂直布局。 在水 泵机壳的左端， 具有一个与柱塞相配合的内筒缸体， 其间装置有用于隔离水和润滑油的 油封及由柱塞、 柱塞弹簧、 柱塞弹簧支撑座组成的柱塞总成、 由滚道板、 滚道组件、 平 面凸轮组成的推力球轴承总成， 还有水泵机壳、 电机、 泵盖、 溢流阀。 工作时， 电机转 动， 带动平面凸轮作旋转运动， 凸轮与由滚道板、 滚道组件、 平面凸轮组成的推力球轴 承总成将三组由柱塞、 柱塞弹簧、 柱塞弹簧支撑座组成的柱塞总成向前作轴向运动； 又 在三个柱塞弹簧作用下， 分别依次作向后轴向复位运动； 在柱塞向前作轴向运动时， 低 压进水单向阀被关闭， 高压单向阀被打开， 就将泵内低压水源被压入至高压出水区， 当 柱塞在柱塞弹簧作用下， 分别依次作向后轴向复位运动时， 高压单向阀在压力作用下关 闭， 同时低压进水单向阀幵启， 低压水注入泵内， 这样每一次作轴向往复运动， 就将泵 内低压水原被压入至高压出水区， 如此循环往复。
因此从上述两专利可以看出， 它们高压水的形成均是通过柱塞的往复运动来实现 的。 而柱塞泵的设置， 使清洗机的结构较为复杂， 同时会增加清洗机的重量、 成本。
而本发明则是提供一种通过其它方式来实现产生高压水的清洗机结构，并且使得清 洗机的结构也更为简单。 发明内容
本发明所要解决的技术问题是针对现有技术现状而提供一种通过齿轮啮合并高速 转动形成高压的手持式清洗机， 并且使得清洗机的进水更加快速、 结构更加简单。
本发明解决上述技术问题所采用的技术方案为： 该手持式清洗机， 主要包括有电 机、 减速器、 泵体、 喷嘴和把手， 喷嘴和把手分别设在泵体的前部和后部下侧， 喷嘴和 把手内分别开设有与泵体内的水流通道贯通的出水通道和进水通道， 其特征在于： 所述 的泵体内设有一主传动轴和至少一个从动轴， 所述的主传动轴与减速器传动相连， 并在 主传动轴上固定有主动液压齿轮， 该齿轮与固定在从动轴上的从动液压齿轮相啮合传 动； 所述的泵体上设有构成水流通道的进、 出水型腔， 并且进、 出水型腔与主传动轴上 的主动液压齿轮和从动轴上的从动液压齿轮的所在腔型贯通， 由此利用主动液压齿轮和 从动液压齿轮的啮合并高速转动形成高压， 而形成结构简单、 进水快速的高压泵。
更好地，在所述的泵体内还设有与进水型腔相通的回流卸压型腔，在回流卸压型腔' 连通喷嘴出水的通道内设有卸压回流阀， 通过卸压回流阔的调节， 而增加机器的安全保 护性能。
作为优选，所述的主传动轴和从动轴均通过轴承和油封安装在由泵体和泵座结合构 成的型腔内， 并且主传动轴的上端穿过泵座， 一与电机输出轴传动连接的减速齿轮设置 在该传动轴上。
作为优选， 所述的从动轴设置为一根。
与现有技术相比， 本发明的优点在于： 本发明利用齿轮啮合并高速旋转形成高压， 设计新颖， 它相对现有的柱塞泵结构简单， 从而也使清洗机的体积变小、 重量变轻， 而 进水变快， 它比一般的柱塞泵进水时间缩短 10倍以上； 另外泵体上装有可调节的卸压 回流阀， 还增加了机器的安全保护性能； 而清洗机采用从下方进水、 前部出水的方式， 通过电机的开停直接控制清洗机泵体的工作， 操作方便简捷； 而将进水管与手柄合二为 一， 使清洗机的外形更加简洁轻巧美观； 设置防水装置， 使通道只能进风而不能进水， 防止 360° 的淋水， 实现了从内部冷却串激电机， 从而减少电机重量和体积， 提高电机 效率， 更节能。 附图说明
图 1为本发明实施例的立体分解示意图。
图 2为本发明实施例的结构示意图。
图 3为本发明实施例的外形示意图。 具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
结合图 1-图 3所示， 本手持式清洗机主要是由电机 11、 减速器 10、 齿轮泵、 喷嘴 1及手柄 4等组装构成， 其中：
电机 11采用串激电机， 并采用交流 220伏或直流 12伏两种电源供电方式， 因此本 清洗机具备家用电源和车用电源都可使用的特点， 使用方便。 电机 11 的动力输出通过 减速器 10后传递给安装在泵体中的主传动轴 7。电机外壳对应内部的电机部位上成形有 百叶窗式进气孔， 该进气孔呈迷宫式构造。 电机外壳的内部设有一与其相结合的瓦楞状 内壳， 内壳上也对应设有百叶窗式进气孔， 并可与外壳上的百叶窗式进气孔之间填充有 适量海绵。 而在外壳的上下部分别设有漏水孔。 由该内、 外两道百叶窗叶进气孔， 构成 了本清洗机的一特殊的迷宫式防水装置，它利用水的重力作用通过两道百叶窗式进气孔 的双重防水作用进行防水， 使通道只能进风而不能进水， 防止 360° 的淋水， 实现了从 内部冷却串激电机， 从而减少电机重量和体积， 提高电机效率， 更节能。
齿轮泵的泵体 3后部设有泵座 9，两者通过螺钉紧固于一起。减速器 10位于泵座 9 后面， 两者也通过螺钉联接， 而减速器 10通过螺钉与电机 11紧固于一起。 用以形成高 压的主传动轴 7、 从动轴 13以及主动液压齿轮 8、 从动液压齿轮 12等安装在泵体 3与 泵座 9结合构成的空腔内， 并该空腔与设在泵体后侧下部的进水型腔 19与前侧上部的 出水型腔 15共同构成泵体的水流通道， 该通道贯通手柄上的进水通道 18和喷嘴上的出 水通道 14。
从动轴 13可以一根以上， 但以一根为优选。 从动轴 13和主传动轴 7都通过轴承 5 和油封 6平行设置在泵体 3内，而主传动轴 7的上端穿过泵座，其上装有一减速齿轮 16， 并该减速齿轮 16传动连接于电机输出轴 17。在主传动轴 7和从动轴 13上分别固定有一 主动液压齿轮 8和一从动液压齿轮 12， 两齿轮相互啮合。 工作时， 电机输出轴 17通过 减速齿轮 16带动主传动轴 7转动， 与主传动轴 7—起转动的主动液压齿轮 8又带动从 动液压齿轮 12转动。 由于两齿轮啮合转动产生出水侧容积减少， 而从齿轮和腔体的间 隙回到进水侧的水流不能全部抵消由于这种容积减少形成的压力，从而在出水侧形成高 压。
在泵体 3的前侧下部还设有与进水型腔 19相通的回流卸压型腔 20， 在回流卸压型 腔 20连通喷嘴出水的通道内设有卸压回流阀 21，通过卸压回流阀 21的调节，而增加机 器的安全保护性能。
喷嘴 1通过螺钉联接在泵体 3的前部， 且两者结合面上设有密封圈 2， 喷嘴 1上加 工有出水通道 14， 贯通泵体的出水型腔 15和回流卸压型腔 20。 清洗机的喷射距离和面 积， 可通过调节喷嘴来实现。 通过加长喷嘴长度， 可增加清洗机的喷射距离。
手柄 4装在泵体 3的后部下侧， 手柄 4上加工有进水通道 18， 贯通泵体的进水型 腔 19。手柄 4的底端装有与水管连接用的进水接头，进水接头与手柄以及手柄与泵体之 间均打有厌氧胶， 以确保连接处的密封。本清洗机的进水管与手柄合二为一，外观简洁、 轻巧美观。
由上述构件组装构成的清洗机，其整体外形似手持式冲击电钻， 因而相对现有清洗 机， 本发明结构新颖、 外观轻巧美观。
其工作原理如下： 电机转动， 并经减速器减速， 带动主传动轴转动， 主传动轴上的 主动液压齿轮又带动从动轴上的从动液压齿轮一起转动， 由于两齿轮啮合转动产生出水 侧容积减少， 而从齿轮和腔体的间隙回到进水侧的水流不能全部抵消由于这种容积减少 形成的压力， 从而在出水侧形成高压， 产生高压水柱， 而达到高压清洗的目的。

Claims

权 利 要 求
1、 一种手持式清洗机， 主要包括有电机、 减速器、 泵体、 喷嘴和把手， 喷嘴和把 手分别设在泵体的前部和后部下侧， 喷嘴和把手内分别开设有与泵体内的水流通道贯通 的出水通道和进水通道，其特征在于：所述的泵体内设有一主传动轴和至少一个从动轴， 所述的主传动轴与减速器传动相连， 并在主传动轴上固定有主动液压齿轮， 该齿轮与固 定在从动轴上的从动液压齿轮相啮合传动； 所述的泵体上设有构成水流通道的进、 出水 型腔， 并且进、 出水型腔与主传动轴上的主动液压齿轮和从动轴上的从动液压齿轮的所 在腔型贯通。
2、 如权利要求 1所述的手持式清洗机， 其特征在于： 所述的泵体内还设有与进水 型腔相通的回流卸压型腔， 在回流卸压型腔连通喷嘴出水的通道内设有卸压回流阀。
3、 如权利要求 1或 2所述的手持式清洗机， 其特征在于： 所述的主传动轴和从动 轴均通过轴承和油封安装在由泵体和泵座结合构成的型腔内， 并且主传动轴的上端穿过 泵座， 一与电机输出轴传动连接的减速齿轮设置在该传动轴上。
4、 如权利要求 1或 2所述的手持式清洗机， 其特征在于：所述的从动轴设置为一 根。
5、 如权利要求 2所述的手持式清洗机， 其特征在于： 所述的出水型腔设在泵体的 前侧上部， 所述的回流卸压型腔设在泵体的前侧下部。
PCT/CN2009/000300 2009-01-08 2009-03-20 手持式清洗机 WO2010078700A1 (zh)

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