WO2020107969A1 - 一种泵 - Google Patents

一种泵 Download PDF

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Publication number
WO2020107969A1
WO2020107969A1 PCT/CN2019/102795 CN2019102795W WO2020107969A1 WO 2020107969 A1 WO2020107969 A1 WO 2020107969A1 CN 2019102795 W CN2019102795 W CN 2019102795W WO 2020107969 A1 WO2020107969 A1 WO 2020107969A1
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WIPO (PCT)
Prior art keywords
pump
cavity
pressure
sensing device
housing
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PCT/CN2019/102795
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English (en)
French (fr)
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WO2020107969A9 (zh
Inventor
陈挺
何广剑
邱士军
袁琪
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利欧集团浙江泵业有限公司
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Application filed by 利欧集团浙江泵业有限公司 filed Critical 利欧集团浙江泵业有限公司
Publication of WO2020107969A1 publication Critical patent/WO2020107969A1/zh
Publication of WO2020107969A9 publication Critical patent/WO2020107969A9/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0077—Safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088—Testing machines

Definitions

  • the invention relates to the technical field of machinery, and relates to a pump.
  • a water pump is a machine that transports liquid or pressurizes fluid. It transfers the mechanical energy of the prime mover or other external energy to the fluid to increase the fluid energy.
  • the existing water pump control has a mechanical switch mode or an electronic switch mode. For example, an automatic water pump with the publication number CN202266399U, when the water pressure at the water drop falls below the minimum pressure value involved in the pressure switch, the pressure switch will automatically open and start the power supply of the pump.
  • the pressure switch When the water pressure rises to the highest pressure value designed by the pressure switch, the pressure switch will automatically close, at the same time turn off the power of the pump, the pump stops working, when the pressure drops, it will automatically turn on the power of the pump, the pump starts to work, so the cycle will cause frequent pump start up.
  • the existing water pumps have the following ways to solve the frequent start.
  • the gas tank is installed on the pump body to buffer the pressure change and supplement the water flow.
  • the action of the gas tank on the pressure switch can extend the interval between pump start-ups. To a certain extent, the purpose of frequent start is released, but after the liquid in the pump body is released, because the pressure of the gas tank is released, there will still be short pumps, small water flow, etc., causing the pump to start frequently, affecting the life of the motor.
  • the purpose of the present invention is to solve the above-mentioned problems in the prior art, and a pump is proposed.
  • the technical problem to be solved by the present invention is: how to prevent the pump from starting frequently and provide effective protection for the motor without providing a circuit board.
  • a pump includes a pump body, a pump cavity is provided in the pump body, an impeller is provided in the pump cavity, a motor for driving the impeller is provided at the tail of the pump body, and an inflow to the pump cavity is provided on the pump body Channel and outlet flow channel, a check valve is provided at the inlet or outlet flow channel, characterized in that: the check valve is provided with an elastic member that can reset the check valve, the check valve There is also a transmission device capable of transmitting the pressure of the inlet water channel, and a relative pressure sensing device on the pump body is also provided with a pressure sensing device 1 capable of sensing the pressure of the inlet water channel.
  • the outlet water channel or the inlet water channel is also provided with a water outlet Pressure sensing device II.
  • the working principle is as follows: when the pump is running, the outlet flow channel is closed, the pressure in the pump cavity will immediately rise, so that the pressure sensing device 2 located on the outlet flow channel is in a closed state, and the check valve on the inlet flow channel is due to the pump cavity
  • the internal pressure is greater than the pressure of the inlet water channel, which will cause the check valve to rise to block the inlet water channel.
  • the transmission device provided on the check valve keeps the pressure sensing device off when the pump is in the off state, which will cause the pump to break. Electricity, the pump stops.
  • the outlet flow channel is opened, the fluid in the pump cavity is discharged, and the pressure in the pump cavity is lowered.
  • the pressure sensing device 2 located in the outlet flow channel is reset, and the check valve is also reset under the action of the elastic member.
  • the transmission device on the valve makes the pressure sensing device also in the initial open state, at this time the pump is energized to run. If any one of the pressure sensing device 1 and the pressure sensing device 2 is off, the pump is not energized and does not run. Since the pump needs to be powered on when both pressure sensing devices are in the reset state, the problem of frequent pump starting is solved.
  • the transmission device is located at the bottom of the check valve, the transmission device includes a magnet one, the pressure sensing device one includes a sensing device housing, and a fixed shaft is fixed in the sensing device housing.
  • the upper sleeve is provided with a toggle lever, and the wave lever is provided with a magnet two that can attract or repel each other with the magnet one.
  • the sensing device one further includes an induction switch one that can sense the magnet two or the toggle lever.
  • the check valve In the initial state, the check valve is opened, the magnet one is away from the magnet two, the micro switch is in the open state, that is, the induction switch is in the open state; in the closed state, the check valve is closed, the magnet one is close to the magnet two, using the principle of the magnet to make
  • the toggle lever is close to the induction switch, the induction switch is closed; when the pressure of the pump body drops to a certain value, the check valve is reopened under the action of the elastic member 1 and the induction switch is reopened
  • the pressure sensing device 2 further includes a casing 1 and a casing 2, the casing 1 and the casing 2 are connected to form a cavity, and a positioning block is provided between the casing 1 and the casing 2
  • the cavity is divided into cavity one and cavity two by the positioning block.
  • the pressure sensing device 2 is divided into two cavities by a positioning block arranged between the two, and can be respectively responsible for different functions, and at the same time, the positioning block can position the position of the component to be installed inside it.
  • a mounting hole is provided at a bottom of the casing, the end of the positioning block is located in the mounting hole, a step hole is provided on the positioning block, and a stop ring is provided on the step surface of the step hole.
  • An elastic member 2 is provided on the upper end surface of the retaining ring, and one end of the elastic member is in contact with the upper end surface of the retaining ring, and a screw member in contact with the lower end surface of the retaining ring is also provided in the stepped hole, and the cavity two
  • a bracket is provided inside, and the lower end surface of the bracket is in contact with the other end of the elastic member two.
  • a guide shaft and a touch shaft are also provided on the bracket, a guide shaft hole is provided on the positioning block corresponding to the guide shaft, and a touch shaft hole is provided on the corresponding touch shaft.
  • a sensor switch 2 capable of sensing the touch shaft. The touch shaft passing through the touch shaft hole on the positioning block can touch the induction switch, and the induction switch thus determines whether it should be in a closed or open state, thereby determining whether the pump is in a running state.
  • a cylindrical boss is provided on the bracket, a groove is provided on the cylindrical boss, a sealing ring is provided in the groove, and a cylindrical boss can be inserted on the second casing Of the cavity, the sealing ring is in close contact with the inner wall of the cavity.
  • the boss provided on the second shell is located in the cavity and can move along the cavity axis and drive the position of the sealing ring.
  • the sealing ring and the cavity can play a sealing role.
  • the pump body is also provided with a pressure output pipe that communicates with the water outlet pipe
  • the casing 2 is provided with a connection portion that is connected to the pressure output pipe, and the connection portion is provided with a cavity that communicates with the cavity Into the pressure channel.
  • a convex rib is provided on the inner wall of the cavity, and the convex rib can abut against the sealing ring.
  • a protruding rib is designed inside the pressure switch housing. The clever design makes the sensor switch close at the same time the seal has just passed the rib; when the sealing ring returns over the rib, the sensor switch reopens. Increased inlet pressure pushes the bracket to move. When the sealing ring just touches the rib, the inlet pressure needs to be greater than the force of the second elastic stiffener of the elastic member on the sealing ring before the bracket can continue to move.
  • the inlet pressure is reduced, and the inlet pressure needs to be less than the force of the second elastic reduction rib of the elastic member on the seal ring.
  • the presence of the ribs causes a pressure difference when the pressure switch is closed and opened, which can stabilize the pressure and prevent the pressure in the pump from being unstable to cause the pressure switch to start frequently.
  • the pressure sensing device one and the pressure sensing device two are connected in series.
  • the use of a circuit control board can be avoided by connecting in series.
  • the present invention has the following advantages:
  • Figure 1 is a sectional view of the pump
  • Figure 2 is the second explosion diagram of the pressure sensing device
  • Figure 3 is a second sectional view of the pressure sensing device
  • FIG. 6 is a schematic diagram of the second closed state of the pressure sensing device
  • Figure 7 is a three-dimensional view of the check valve
  • a pump as shown in FIGS. 1 and 8 includes a pump body 1, a pump chamber 2 is provided in the pump body 1, an impeller 3 is provided in the pump chamber 2, and a motor 4 for driving the impeller 3 is provided at the rear of the pump body 1
  • the pump body 1 is provided with an inlet flow channel 5 and an outlet flow channel 6 which communicate with the pump cavity 2.
  • a check valve 7 is provided at the inlet flow channel 5 or the outlet flow channel 6, and a check valve 7 is provided on the check valve 7 to enable the check
  • the elastic member 8 of the valve 7 is reset.
  • the check valve 7 is also provided with a transmission device 9 capable of transmitting the pressure of the inlet flow channel 5.
  • the transmission device 9 is located at the bottom of the check valve 7.
  • the transmission device 9 includes a magnet 12.
  • the pump body 1 is also provided with a pressure sensing device 10 capable of sensing the pressure of the inlet flow channel 5 or the outlet flow channel 6 relative to the transmission device 9.
  • the pressure sensing device 10 includes a sensing device housing 13, and the sensing device housing 13 is fixedly provided with a fixed
  • the shaft 14 and the fixed shaft 14 are provided with a toggle lever 15, and the wave lever is provided with a magnet two 16 that can attract or repel each other with the magnet one 12, and the induction device 1 further includes a magnet two 16 or a toggle lever 15 Sensor switch 17.
  • a spring, a sponge, a rubber post, or the like can be used, and a spring is preferably used.
  • a pressure sensing device II 11 capable of sensing the pressure of the water outlet is also provided on the water outlet channel 6 or the inlet water channel 5.
  • the pressure sensing device II 11 further includes a housing 18 and a housing 19, the housing 18 is connected to the housing 19 to form a cavity, and a positioning block 20 is provided between the housing 18 and the housing 19, the cavity
  • the positioned block 20 is divided into cavity one 21 and cavity two 22.
  • the bottom of the casing 18 is provided with a mounting hole 40, and the end of the positioning block 20 is located in the mounting hole 40.
  • Shell 18 and shell 19 are connected by welding or fasteners or snap-fit.
  • Embodiment 1 The positioning block 20 may be disposed between the housing 18 and the housing 19 to abut the end surfaces of the two, and the positioning block 20 may also be connected to the housing 18 by welding or fasteners or snap connection. After the inner wall is fixed by welding or clamping, put on the housing 2 19 to connect by welding or fasteners or clamping, and vice versa.
  • Embodiment 2 The housing 18 and the housing 19 can also be provided with a baffle to support the compression positioning block 20, and then the housing 18 and the housing 19 are connected by welding or fasteners or clamping. Preferably, after the housing 1, the housing 2 and the positioning block are stacked in order, they are connected with fasteners.
  • the positioning block 20 is provided with a stepped hole, and a step ring 23 is provided on the stepped surface of the stepped hole.
  • An elastic member 24 is provided on the upper end surface of the ring 23, and one end of the elastic member 24 and the ring The upper end surface of 23 is in contact with each other, and a spiral member 25 in contact with the lower end surface of the retaining ring 23 is also provided in the stepped hole.
  • the bracket 26 is also provided with a guide shaft 27 and a touch shaft 28, a positioning shaft hole 29 is provided on the positioning block 20 corresponding to the guide shaft 27, a touch shaft hole 30 is provided on the corresponding touch shaft 28, and a cavity 21 is also provided There is a sensor switch 39 capable of sensing the touch shaft 28.
  • Embodiment 1 The bottom end surface of the bracket is a flat surface, and the bottom end surface is in contact with the other end of the elastic member.
  • Embodiment 2 A groove is provided at the bottom of the bracket, a positioning shaft is provided in the groove, the positioning shaft is placed in the elastic member, and an end face of the elastic member placed in the groove is in close contact with the groove groove surface.
  • the present invention preferably adopts the second embodiment.
  • the bracket 26 is provided with a cylindrical boss 31, the cylindrical boss 31 is provided with a groove 32, a seal ring 33 is provided in the groove 32, and a housing 19 is also provided There is a cavity 34 into which the cylindrical boss 31 can be inserted, and the sealing ring 33 abuts against the inner wall of the cavity 34.
  • the pump body 1 is also provided with a pressure output pipe 35 that communicates with the water outlet pipe, and the casing 2 19 is provided with a connection portion 36 connected to the pressure output pipe 35.
  • 36 has a pressure inlet 37 communicating with the cavity 34.
  • a convex rib 38 is provided on the inner wall of the cavity 34, and the convex rib 38 can abut against the sealing ring 33.
  • the invention can be applied to land pumps and submersible pumps.
  • the induction device 1 and the induction device 2 can be arranged on the inlet flow channel or the outlet flow channel according to the actual needs of the land pump and the submersible pump.
  • the working principle of the present invention is as follows: when the pump is running, the outlet flow channel is closed, the pressure in the pump chamber will immediately rise, so that the pressure sensing device 2 located on the outlet flow channel is in a closed state, and the check valve located on the inlet flow channel
  • the internal pressure of the pump cavity is greater than the pressure of the inlet water channel, which will cause the check valve to rise to block the inlet water channel.
  • the transmission device provided on the check valve keeps the pressure sensing device closed.
  • the pump is turned off, which will cause The pump is powered off and the pump stops.
  • the outlet flow channel is opened, the fluid in the pump cavity is discharged, and the pressure in the pump cavity is lowered.
  • the pressure sensing device 2 located in the outlet flow channel is reset.
  • the transmission device on the valve makes the pressure sensing device also in the initial open state, at this time the pump is energized to run. If any one of the pressure sensing device 1 and the pressure sensing device 2 is off, the pump is not energized and does not run. Because the two pressure sensing devices are in the reset state, the pump can be powered on. Through the above principle, the pump stops when the user closes the valve during use, and the pump restarts when the user opens the valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种泵，包括泵体(1)，泵体(1)内设有泵腔(2)，泵腔(2)内设有叶轮(3)，泵体(1)尾部设有用于驱动叶轮(3)的电机(4)，泵体(1)上设有连通泵腔(2)的进水流道(5)和出水流道(6)，进水流道(5)或出水流道(6)处设有止回阀(7)，止回阀(7)上设有能使止回阀(7)复位的弹性件一(8)，止回阀(7)还设有能传递进水流道(5)压力的传递装置(9)，泵体(1)上相对传递装置(9)还设有能感应进水流道(5)或出水流道(6)压力的压力感应装置一(10)，出水流道(6)或进水流道(5)上还设置有能感应出水口压力的压力感应装置二(11)。该结构解决了通过单一信号控制泵的运行和停止而造成频繁启动的问题。

Description

一种泵 技术领域
本发明涉属于机械技术领域，涉及一种泵。
背景技术
水泵是输送液体或者使流体增压的机械，它将原动机的机械能或其他外部能量传送给流体，使流体能量增加。传统水泵从一处向另一处进行抽水时，仅凭经验操作，对被抽水处的水位无法监控，容易造成抽空。现有的水泵控制有机械式开关模式或电子开关模式。例如公开号为CN202266399U的一种自动抽水水泵，当用水处的水压降到低于压力开关涉及的最低压力值时，压力开关会自动打开并启动水泵电源，水泵进行抽水工作，当用水处的水压上升到压力开关设计的最高压力值时，压力开关会自动关闭，同时关闭水泵电源，水泵停止工作，当压力下降时又会自动打开水泵电源，水泵开始工作，如此循环会造成泵的频繁启动。
如何解决水泵频繁启动这一技术问题，是现有水泵需要解决的一个重要技术问题。现有的水泵解决频繁启动主要有以下方式，是在泵体上安装气罐来缓冲压力的变化及补充水流，通过气罐对压力开关的作用能延长泵启动的间隔时间，这种做法能起到一定的放频繁启动的目的，但在泵体内的液体释放后，因为气罐压力的释放仍然会存在因水管较短、出小水流等情况，导致水泵频繁启动的情况发生，影响电机寿命。现有一些智能水泵会通过连接线路板控制水泵的启停，而线路板在工作的过程中会出现故障导致无法有效对水泵进行启停，并且通过线路板控制造价高，对空间的占用大，如何更好的解决水泵频繁启动这一技术问题是本发明专利需要解决的问题。
发明内容
本发明的目的是针对现有的技术存在上述问题，提出了一种泵，本发明所要解决的技术问题是：如何免泵频繁启动，为电机提供有效保护的同时不设置线路板。
本发明的目的可通过下列技术方案来实现：
一种泵，包括泵体，所述泵体内设有泵腔，泵腔内设有叶轮，所述泵体尾部设有用于驱动叶轮的电机，所述泵体上设有连通泵腔的进水流道和出水流道，所述进水流道或出水流道处设有止回阀，其特征在于：所述止回阀上设有能使止回阀复位的弹性件一，所述止回阀还设有能传递进水流道压力的传递装置，泵体上相对传递装置还设有能感应进水流道压力的压力感应装置一，所述出水流道或进水流道上还设置有能感应出水口压力的压力感应装置二。
其工作原理如下：当泵在运行时，出水流道关闭，泵腔内的压力会立刻上升，使位于出水流道上的压力感应装置二处于关闭状态，位于进水流道上的止回阀由于泵腔内部压力大于进水流道的压力，会使止回阀上升堵住进水流道，设置在止回阀上的传递装置使压力感应装置一处于关闭状态，此时泵处于关闭状态，会使泵断电，泵停止运行。当出水流道打开，使泵腔内的流体排出，使泵腔内的压力下降，位于出水流道的压力感应装置二复位，止回阀在弹性件一的作用下也复位，设置在止回阀上的传递装置使压力感应装置一也处于初始打开状态，此时泵通电运行。上述压力感应装置一和压力感应装置二任何一个处于关闭状态，泵均不通电不运行。由于需要两个压力感应装置均处于复位状态下泵才能通电运行，因此解决了泵频繁启动的问题。
在上述的泵，所述传递装置位于止回阀底部，所述传递装置包括磁铁一，所述压力感应装置一包括感应装置外壳，所述感应 装置外壳内固设有定轴，所述定轴上套设有拨动杆，所述波动杆上设有能与磁铁一相互吸引或排斥的磁铁二，所述感应装置一还包括能够感应磁铁二或拨动杆的感应开关一。初始状态下，止回阀打开，磁铁一远离磁铁二，微动开关处于打开状态，即感应开关处于打开状态；关闭状态下，止回阀关闭，磁铁一靠近磁铁二，利用磁铁的原理，使拨动杆向感应开关靠近推感应开关，感应开关关闭；当泵体压力降低到一定值时，止回阀在弹性件一的作用下重新打开，感应开关重新打开
在上述的泵，所述压力感应装置二还包括壳体一和壳体二，所述壳体一与壳体二连接形成腔体，壳体一与壳体二之间设置有定位块，所述腔体被定位块分为腔体一和腔体二。压力感应装置二由设置于其两者之间的定位块隔成两个腔体，可分别负责不同的功能，同时定位块可以对要装于其内部的部件的位置进行定位。
在上述的泵，所述壳体一底部设有安装孔，所述定位块末端位于安装孔内，所述定位块上设有台阶孔，所述台阶孔的台阶面上设有挡圈，所述挡圈上端面设有弹性件二，所述弹性件二一端与挡圈上端面相贴靠，所述台阶孔内还设有与挡圈下端面相贴靠的螺旋件，所述腔体二内设有支架，所述支架下端面与弹性件二另一端相贴靠。通过螺旋件的旋转改变其位置，从而推动挡圈的位置，改变弹性件二的内应力，调节弹性件二由于使用时间的增长，弹性降低，不能起到原有的功能效果。
在上述的泵，所述支架上还设有导向轴和触碰轴，所述定位块上对应导向轴开设有导向轴孔，对应触碰轴开设有触碰轴孔，所述腔体一内还设有能够感应触碰轴的感应开关二。所述触碰轴穿过定位块上的触碰轴孔能够触碰到感应开关，感应开关由此判定是否应当处于关闭或开启的状态，从而确定泵是否处于运行的状态。
在上述的泵，所述支架上设有柱状凸台，所述柱状凸台上设 有凹槽，所述凹槽内设有密封圈，所述壳体二上还设有能插入柱状凸台的型腔，所述密封圈与型腔内壁相贴靠。壳体二上设置的凸台位于在型腔可以内沿型腔轴线移动，并带动密封圈位置的移动，所述密封圈与型腔贴靠可以起到密封的作用。
在上述的泵，泵体上还设有与出水管道相连通的压力输出管道，所述壳体二上设有与压力输出管道连接的连接部，所述连接部内设有与型腔相连通的进压流道。在压力感应装置二与泵体通过连接部相连后，出水管道上设置的压力输出管道与进压流道相连通，使出水流道上的压力传递到支架上。
在上述的泵，所述型腔内壁上设有凸起筋条，所述凸起筋条能够与密封圈相贴靠。在压力开关外壳内部设计一根凸起的筋条，通过巧妙的设计使得密封刚越过筋条的同时，感应开关关闭；当密封圈返回越过筋条的同时，感应开关重新打开。进口压力增大推动支架移动，密封圈正好接触筋条时，进口压力需大于弹性件二弹力加筋条对密封圈的力，支架才能继续移动。密封圈越过筋条后，进口压力减小，进口压力需小于弹性件二弹力减筋条对密封圈的力。筋条的存在使压力开关在关闭与打开时产生一个压力差，能够起到稳压，避免泵内部压力不稳定使压力开关频繁的启动。
在上述的泵，所述压力感应装置一与压力感应装置二串联。通过串联的方式可以避免使用电路控制板，压力感应装置一与压力感应装置二中的感应开关其中一个处于断开状态时，泵处于断电状态，以最简单的方式达到防止频繁启动的效果。
与现有技术相比，本发明具有以下优点：
1、压力感应装置一和压力感应装置二任何一个处于关闭状态，泵均不通电不运行。由于需要两个压力感应装置均处于复位状态下泵才能通电运行，防止泵频繁启动。避免泵仅凭单一信号来控制电机的启停，造成了频繁启动。2、泵在停止瞬间会伴随一 定压力的下降，可以防止泵由于此压力的下降导致压力感应装置的误判。3、泵在运行的过程中，电压不稳定之类的都会导致泵运行压力的不稳定，可以防止出现误判的情况。4、通过串联的方式连接压力感应装置一和压力感应装置二，可以免去使用电路控制板来控制电路，节约了成本和空间，并且避免了由于电路控制板的故障而导致泵的故障。
附图说明
图1是泵的剖视图
图2是压力感应装置二爆炸图
图3是压力感应装置二剖视图
图4是压力感应装置局部放大图
图5是压力感应装置二初始位置状态示意图
图6是压力感应装置二关闭状态示意图
图7是止回阀三维视图
图8是压力感应装置一剖视图
图中，1、泵体：2、泵腔；3、叶轮；4电机；5、进水流道；6、出水流道；7、止回阀；8、弹性件一；9、传递装置；10、压力感应装置一；11、压力感应装置二；12、磁铁一；13、外壳；14、定轴；15、拨动杆；16、磁铁二；17、感应开关一；18、壳体一；19、壳体二；20、定位块；21、腔体一；22、腔体二；23、挡圈；24、弹性件二；25、螺旋件；26、支架；27、导向轴；28、触碰轴；29、导向轴孔；30、触碰轴孔；31、柱状凸台；32、凹槽；33、密封圈；34、型腔；35、压力输出管道；36、连接部；37、进压流道；38、凸起筋条；39、感应开关二；40、安装孔。
具体实施方式
以下是本发明的具体实施例并结合附图，对本发明的技术方 案作进一步的描述，但本发明并不限于这些实施例。
如图1和图8所示的一种泵，包括泵体1，泵体1内设有泵腔2，泵腔2内设有叶轮3，泵体1尾部设有用于驱动叶轮3的电机4，泵体1上设有连通泵腔2的进水流道5和出水流道6，进水流道5或出水流道6处设有止回阀7，止回阀7上设有能使止回阀7复位的弹性件一8，止回阀7还设有能传递进水流道5压力的传递装置9，传递装置9位于止回阀7底部，传递装置9包括磁铁一12。泵体1上相对传递装置9还设有能感应进水流道5或出水流道6压力的压力感应装置一10，压力感应装置一10包括感应装置外壳13，感应装置外壳13内固设有定轴14，定轴14上套设有拨动杆15，波动杆上设有能与磁铁一12相互吸引或排斥的磁铁二16，感应装置一还包括能够感应磁铁二16或拨动杆15的感应开关一17。上述弹性件一可以使用弹簧、海绵、橡胶柱等，作为优选使用弹簧。
如图1和图3所示，出水流道6或进水流道5上还设置有能感应出水口压力的压力感应装置二11。压力感应装置二11还包括壳体一18和壳体二19，壳体一18与壳体二19连接形成腔体，壳体一18与壳体二19之间设置有定位块20，腔体被定位块20分为腔体一21和腔体二22。壳体一18底部设有安装孔40，定位块20末端位于安装孔40内。壳体一18与壳体二19通过焊接或紧固件或卡接连接。实施方式一：定位块20可以设置在壳体一18与壳体二19之间与两者端面相抵靠，通过焊接或紧固件或卡接连接，定位块20也可以与壳体一18的内壁焊接或卡接固定好后，再放上壳体二19通过焊接或紧固件或卡接连接，反之亦然。实施方式二：壳体一18和壳体二19上也可以设置挡板支撑压紧定位块20，然后将壳体一18和壳体二19通过焊接或紧固件或卡接连接。作为优选将壳体一、壳体二和定位块按顺序堆叠好后，通过与紧固件连接。
如图2和图3所示，定位块20上设有台阶孔，台阶孔的台阶面上设有挡圈23，挡圈23上端面设有弹性件二24，弹性件二24一端与挡圈23上端面相贴靠，台阶孔内还设有与挡圈23下端面相贴靠的螺旋件25，腔体二22内设有支架26，支架26下端面与弹性件二24另一端相贴靠。支架26上还设有导向轴27和触碰轴28，定位块20上对应导向轴27开设有导向轴孔29，对应触碰轴28开设有触碰轴孔30，腔体一21内还设有能够感应触碰轴28的感应开关二39。上述弹性件二可以使用弹簧、海绵、橡胶柱等，作为优选使用弹簧。实施方式一：上述的支架底部端面是一个平面，底部端面与弹性件另一端相贴靠。实施方式二：在支架底部设置凹槽，凹槽内设置定位轴，定位轴置于弹性件内，弹性件置入凹槽内的一端端面与凹槽槽面相贴靠。本发明优选采用实施方式二。
如图2、图3和图4所示，支架26上设有柱状凸台31，柱状凸台31上设有凹槽32，凹槽32内设有密封圈33，壳体二19上还设有能插入柱状凸台31的型腔34，密封圈33与型腔34内壁相贴靠。
如图2、图3和图4所示，泵体1上还设有与出水管道相连通的压力输出管道35，壳体二19上设有与压力输出管道35连接的连接部36，连接部36内设有与型腔34相连通的进压流道37。
如图2、图3和图4所示，型腔34内壁上设有凸起筋条38，凸起筋条38能够与密封圈33相贴靠。
本发明可应用于陆上泵与潜水泵中，感应装置一与感应装置二根据陆上泵与潜水泵实际需求，选择布置于进水流道或出水流道上。
本发明的工作原理如下：当泵在运行时，出水流道关闭，泵腔内的压力会立刻上升，使位于出水流道上的压力感应装置二处于关闭状态，位于进水流道上的止回阀由于泵腔内部压力大于进 水流道的压力，会使止回阀上升堵住进水流道，设置在止回阀上的传递装置使压力感应装置一处于关闭状态，此时泵处于关闭状态，会使泵断电，泵停止运行。当出水流道打开，使泵腔内的流体排出，使泵腔内的压力下降，位于出水流道的压力感应装置二复位，止回阀在弹性件一的作用下也复位，设置在止回阀上的传递装置使压力感应装置一也处于初始打开状态，此时泵通电运行。上述压力感应装置一和压力感应装置二任何一个处于关闭状态，泵均不通电不运行。由于需要两个压力感应装置均处于复位状态下泵才能通电运行。通过上述原理，当用户在使用过程中关闭阀门时泵即停止，当用户打开阀门后泵即重新启动运行。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。

Claims (9)

  1. 一种泵，包括泵体(1)，所述泵体(1)内设有泵腔(2)，泵腔(2)内设有叶轮(3)，所述泵体(1)尾部设有用于驱动叶轮(3)的电机(4)，所述泵体(1)上设有连通泵腔(2)的进水流道(5)和出水流道(6)，所述进水流道(5)或出水流道(6)处设有止回阀(7)，其特征在于：所述止回阀(7)上设有能使止回阀(7)复位的弹性件一(8)，所述止回阀(7)还设有能传递进水流道(5)压力的传递装置(9)，泵体(1)上相对传递装置(9)还设有能感应进水流道(5)或出水流道(6)压力的压力感应装置一(10)，所述出水流道(6)或进水流道(5)上还设置有能感应出水口压力的压力感应装置二(11)。
  2. 根据权利要求1所述的一种泵，其特征在于：所述传递装置(9)位于止回阀(7)底部，所述传递装置(9)包括磁铁一(12)，所述压力感应装置一(10)包括感应装置外壳(13)，所述感应装置外壳(13)内固设有定轴(14)，所述定轴(14)上套设有拨动杆(15)，所述波动杆上设有能与磁铁一(12)相互吸引或排斥的磁铁二(16)，所述感应装置一还包括能够感应磁铁二(16)或拨动杆(15)的感应开关一(17)。
  3. 根据权利要求1所述的一种泵，其特征在于：所述压力感应装置二(11)还包括壳体一(18)和壳体二(19)，所述壳体一(18)与壳体二(19)连接形成腔体，壳体一(18)与壳体二(19)之间设置有定位块(20)，所述腔体被定位块(20)分为腔体一(21)和腔体二(22)。
  4. 根据权利要求3所述的一种泵，其特征在于：所述壳体一(18)底部设有安装孔(40)，所述定位块(20)末端位于安装孔(40)内，所述定位块(20)上设有台阶孔，所述台阶孔的台阶面上设有挡圈(23)，所述挡圈(23)上端面设有弹性件二(24)，所述弹性件二(24)一端与挡圈(23)上端面相贴靠，所述台阶孔内还设有与挡圈(23)下端面相贴靠的螺旋件(25)，所述腔体 二(22)内设有支架(26)，所述支架(26)下端面与弹性件二(24)另一端相贴靠。
  5. 根据权利要求4所述的一种泵，其特征在于：所述支架(26)上还设有导向轴(27)和触碰轴(28)，所述定位块(20)上对应导向轴(27)开设有导向轴孔(29)，对应触碰轴(28)开设有触碰轴孔(30)，所述腔体一(21)内还设有能够感应触碰轴(28)的感应开关二(39)。(感应开关要写两个实施例、接近开关、微动开关)
  6. 根据权利要求5所述的一种泵，其特征在于：所述支架(26)上设有柱状凸台(31)，所述柱状凸台(31)上设有凹槽(32)，所述凹槽(32)内设有密封圈(33)，所述壳体二(19)上还设有能插入柱状凸台(31)的型腔(34)，所述密封圈(33)与型腔(34)内壁相贴靠。
  7. 根据权利要求6所述的一种泵，其特征在于：泵体(1)上还设有与出水管道相连通的压力输出管道(35)，所述壳体二(19)上设有与压力输出管道(35)连接的连接部(36)，所述连接部(36)内设有与型腔(34)相连通的进压流道(37)。
  8. 根据权利要求7所述的一种泵，其特征在于：所述型腔(34)内壁上设有凸起筋条(38)，所述凸起筋条(38)能够与密封圈(33)相贴靠。
  9. 根据权利要求1所述的一种泵，其特征在于：所述压力感应装置一(10)与压力感应装置二(11)串联。
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