WO2012142780A1 - Minitype vacuum hydraulic pump - Google Patents
Minitype vacuum hydraulic pump Download PDFInfo
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- WO2012142780A1 WO2012142780A1 PCT/CN2011/074252 CN2011074252W WO2012142780A1 WO 2012142780 A1 WO2012142780 A1 WO 2012142780A1 CN 2011074252 W CN2011074252 W CN 2011074252W WO 2012142780 A1 WO2012142780 A1 WO 2012142780A1
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/18—Centrifugal pumps characterised by use of centrifugal force of liquids entrained in pumps
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- the volumetric pump is used.
- the displacement type hydraulic pump realizes oil absorption and oil pressure by the change of the sealing volume.
- the amount of oil discharge depends on the volume change of the sealing chamber, but the volumetric pump needs to work.
- Two necessary conditions 1. There is a change in the sealing volume of the cycle, and the sealing volume is sucked from small to large, and the oil is pressed from large to small; 2. There is a liquid dispensing device for ensuring that the sealing volume is only connected to the liquid suction pipe when the sealing volume is changed from small to large, and the sealing volume is only connected to the liquid pressure pipe from large to small.
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Abstract
A minitype vacuum hydraulic pump which comprises a shell (1), an end cover (2), a flow guiding liquid input tube (3), a flow guiding liquid output tube(4), an impellor (5), a motor rotor (6), motor coils (7) and a shaft sleeve (8). The end cover is sealed at one end of the shell. The impellor is installed on a rotary shaft of the motor rotor. The motor rotor and the shaft sleeve are fixed in the shell after being assembled and rotated through the driving of the motor coils. The motor coils are divided into a plurality of groups. The shell is provided with seal cavities which are used for arranging the motor coils (70, 71). The shell is also provided with a seal pump liquid chamber (10) and a secondary slow pressure chamber (11) internally. The secondary slow pressure chamber is communicated with the pump liquid chamber. After the liquid is introduced from the flow guiding liquid input tube by the rotation of the impellor on the rotary shaft of the motor rotor, the liquid is exhausted from the pump liquid chamber, the secondary slow pressure chamber and the flow guiding liquid output tube, and the flow guiding liquid input tube and the flow guiding liquid output tube are respectively provided with a pipeline seal device (9) which prevents the liquid in the pump liquid chamber and the secondary slow pressure chamber from leaking when the vacuum hydraulic pump is shut down.
Description
【技术领域】[Technical Field]
本发明涉及微型液体增压泵，更具体的说，是涉及一种专用在制冷技术领域内，在高真空条件下的微型真空液压泵。The present invention relates to a micro-liquid booster pump and, more particularly, to a micro-vacuum hydraulic pump dedicated to high vacuum conditions in the field of refrigeration technology.
【背景技术】【Background technique】
液压泵的种类繁多，按工作原理可分为：（1）动力式泵，又叫轮式泵或叶片泵，它依靠旋转的叶片对液体的动力作用，把能量连续的传送给液体，使液体在常温、常大气压条件下的动能和压力能增加，随后通过压出室将动能转换成压力能；（2）容积式泵，它依靠包容液体的密封工作空间容积的周期变化，把周期性的动力传送给液体，使液体的压力增加，然后将液体强行排出。
There are many types of hydraulic pumps. According to the working principle, they can be divided into: (1) Power pumps, also called wheel pumps or vane pumps, which rely on the dynamic action of rotating blades on the liquid to continuously transfer energy to the liquid to make the liquid The kinetic energy and pressure energy increase under normal temperature and atmospheric pressure conditions, and then the kinetic energy is converted into pressure energy through the extrusion chamber; (2) the positive displacement pump, which relies on the periodic variation of the volume of the sealed working space containing the liquid, and the periodicity Power is transferred to the liquid, causing the pressure of the liquid to increase, and then forcing the liquid out.
其中用的较多的是容积式泵，容积式液压泵是靠密封容积的变化来实现吸油和压油的，其排油量的大小取决于密封腔的容积变化，但容积式泵工作时候需要两个必要条件：
1、有周期的密封容积变化，密封容积由小变大时吸油，由大变小时压油；
2、有配液装置，用于保证密封容积由小变大时只与吸液管连通，密封容积由大变小时只与压液管连通。Among them, the volumetric pump is used. The displacement type hydraulic pump realizes oil absorption and oil pressure by the change of the sealing volume. The amount of oil discharge depends on the volume change of the sealing chamber, but the volumetric pump needs to work. Two necessary conditions:
1. There is a change in the sealing volume of the cycle, and the sealing volume is sucked from small to large, and the oil is pressed from large to small;
2. There is a liquid dispensing device for ensuring that the sealing volume is only connected to the liquid suction pipe when the sealing volume is changed from small to large, and the sealing volume is only connected to the liquid pressure pipe from large to small.
1、有周期的密封容积变化，密封容积由小变大时吸油，由大变小时压油；
2、有配液装置，用于保证密封容积由小变大时只与吸液管连通，密封容积由大变小时只与压液管连通。Among them, the volumetric pump is used. The displacement type hydraulic pump realizes oil absorption and oil pressure by the change of the sealing volume. The amount of oil discharge depends on the volume change of the sealing chamber, but the volumetric pump needs to work. Two necessary conditions:
1. There is a change in the sealing volume of the cycle, and the sealing volume is sucked from small to large, and the oil is pressed from large to small;
2. There is a liquid dispensing device for ensuring that the sealing volume is only connected to the liquid suction pipe when the sealing volume is changed from small to large, and the sealing volume is only connected to the liquid pressure pipe from large to small.
目前所有的液压泵都只能在常温、常大气压的情况下，能正常吸排液体工作，一旦在真空条件下，由于失重的缘故而不能正常吸排液体工作。而且传统的动力式泵通常需要较高的转速来驱动，在正常大气压条件，不适用于超负压真空环境下的工作，一旦在超负压工作条件下，就会产生空转而不吸排液体，这是因为工作环境中已经失去压差而失重力的缘故，并且目前传统式液压泵也不能在强电工作电压下，长期在液态下工作。At present, all hydraulic pumps can only normally suck and drain liquid under normal temperature and normal atmospheric pressure. Once under vacuum conditions, due to weight loss, liquid can not be properly sucked and discharged. Moreover, the conventional power pump usually needs a higher rotation speed to drive. Under normal atmospheric conditions, it is not suitable for the work under the ultra-negative pressure vacuum environment. Once under the super-negative working condition, it will produce idling without sucking and discharging liquid. This is because the working environment has lost the pressure difference and lost gravity, and the conventional hydraulic pump can not work under the strong liquid working voltage for a long time in the liquid state.
【发明内容】[Summary of the Invention]
本发明的优点是提供一种在高真空条件下具有缓压增压、耐酸、耐磨、耐压、高绝缘的微型真空液压泵，它能够在极限真空条件下匀速增压、防腐、耐用、低噪，确保工作状态安全，有效在负压条件下将液体以恒定压力传送。The invention has the advantages of providing a miniature vacuum hydraulic pump with a pressure boosting, acid resistance, wear resistance, pressure resistance and high insulation under high vacuum conditions, which can be uniformly pressurized, anticorrosive and durable under extreme vacuum conditions. Low noise, ensuring safe working conditions, effectively delivering liquid at a constant pressure under negative pressure conditions.
本发明解决其技术问题所采用的技术方案是：
一种微型真空液压泵，包括壳体、端盖、导流液体输入管、导流液体输出管、叶轮、电机转子、电机线圈和轴套，所述端盖密封于壳体的一端，叶轮安装在电机转子的转轴上，电机转子与轴套装配后固定在壳体内并通过电机线圈驱动转动；电机线圈分为多组，在壳体内设有多个用于布置多组电机线圈的密封腔体；在壳体内还设有密封的泵液室和二次绥压室，二次绥压室与泵液室连通，电机转子转轴上的叶轮转动将液体从导流液体输入管引入后经泵液室、二次绥压室和导流液体输出管排出；在导流液体输入管和导流液体输出管内分别设有停机时防止泵液室和二次绥压室内的液体泄漏的管道封口装置。The technical solution adopted by the present invention to solve the technical problem thereof is:
A miniature vacuum hydraulic pump includes a casing, an end cover, a diversion liquid input pipe, a diversion liquid output pipe, an impeller, a motor rotor, a motor coil and a bushing, and the end cap is sealed at one end of the casing, and the impeller is mounted On the rotating shaft of the motor rotor, the motor rotor and the shaft are assembled and fixed in the housing and driven to rotate by the motor coil; the motor coil is divided into a plurality of groups, and a plurality of sealing cavities for arranging the plurality of sets of motor coils are arranged in the housing. There is also a sealed pumping chamber and a secondary pressure chamber in the housing, the secondary pressure chamber is in communication with the pumping chamber, and the impeller on the rotor shaft of the motor rotates to introduce liquid from the diverting liquid inlet tube and then through the pump liquid. The chamber, the secondary pressure chamber and the diversion liquid output tube are discharged; and a pipeline sealing device for preventing liquid leakage in the pump chamber and the secondary pressure chamber during shutdown is respectively provided in the diversion liquid input tube and the diversion liquid output tube.
一种微型真空液压泵，包括壳体、端盖、导流液体输入管、导流液体输出管、叶轮、电机转子、电机线圈和轴套，所述端盖密封于壳体的一端，叶轮安装在电机转子的转轴上，电机转子与轴套装配后固定在壳体内并通过电机线圈驱动转动；电机线圈分为多组，在壳体内设有多个用于布置多组电机线圈的密封腔体；在壳体内还设有密封的泵液室和二次绥压室，二次绥压室与泵液室连通，电机转子转轴上的叶轮转动将液体从导流液体输入管引入后经泵液室、二次绥压室和导流液体输出管排出；在导流液体输入管和导流液体输出管内分别设有停机时防止泵液室和二次绥压室内的液体泄漏的管道封口装置。The technical solution adopted by the present invention to solve the technical problem thereof is:
A miniature vacuum hydraulic pump includes a casing, an end cover, a diversion liquid input pipe, a diversion liquid output pipe, an impeller, a motor rotor, a motor coil and a bushing, and the end cap is sealed at one end of the casing, and the impeller is mounted On the rotating shaft of the motor rotor, the motor rotor and the shaft are assembled and fixed in the housing and driven to rotate by the motor coil; the motor coil is divided into a plurality of groups, and a plurality of sealing cavities for arranging the plurality of sets of motor coils are arranged in the housing. There is also a sealed pumping chamber and a secondary pressure chamber in the housing, the secondary pressure chamber is in communication with the pumping chamber, and the impeller on the rotor shaft of the motor rotates to introduce liquid from the diverting liquid inlet tube and then through the pump liquid. The chamber, the secondary pressure chamber and the diversion liquid output tube are discharged; and a pipeline sealing device for preventing liquid leakage in the pump chamber and the secondary pressure chamber during shutdown is respectively provided in the diversion liquid input tube and the diversion liquid output tube.
所述管道封口装置包括固定轴、可在管道内滑动的轴套、抽空弹簧和封口片，封口片固定在固定轴端部并安装在管道的阶梯口外侧，所述轴套和抽空弹簧安装在固定轴上并位于管道的阶梯口的内侧。The pipe sealing device comprises a fixed shaft, a sleeve slidable in the pipe, an evacuation spring and a sealing piece, the sealing piece is fixed at the end of the fixed shaft and is installed outside the stepped opening of the pipe, and the sleeve and the evacuation spring are installed at It is fixed on the shaft and is located inside the stepped opening of the pipe.
所述端盖侧设有用于密封泵液室和二次绥压室的前耐压密封盖，对应的壳体后侧设有对电机转子密封的后耐压密封盖，在壳体内还设有对密封泵液室、二次绥压室、电机线圈密封的耐温耐压固化胶。The end cover side is provided with a front pressure sealing cover for sealing the pump liquid chamber and the secondary pressure chamber, and the rear side of the corresponding housing is provided with a rear pressure sealing cover for sealing the rotor of the motor, and is further provided in the housing. Temperature and pressure resistant curing adhesive for sealing the pumping liquid chamber, the secondary pressure chamber and the motor coil.
所述壳体后侧还设有压力平衡孔。The rear side of the housing is further provided with a pressure balance hole.
所述电机转子的转轴采用高温耐磨瓷轴制成。The rotating shaft of the motor rotor is made of a high temperature wear-resistant porcelain shaft.
所述叶轮采用不锈钢HB—304A制成。The impeller is made of stainless steel HB-304A.
所述前耐压密封盖上设有与所述泵液室贯通的气流分压孔The front pressure sealing cover is provided with a gas flow dividing hole penetrating the pumping chamber
本发明的有益效果是：
本发明采用缓压室平衡压差的方式，通过二次绥压室和管道封口装置，将导流液体输入管和导流液体输出管的吸排口自动封闭而形成分缓压力，当各腔体内真空压进入饱和状态后，启动该泵，泵压力不断增加的同时，将管道封口装置的封口片开启后使液体单向流动，然后开启管道中的回流片，使整个液态密闭***形成循环流动。由于二次绥压室内在停止运行时，产生液体运行惯性，在其作用下，使得导流液体输入管的进液口和和导流液体输出管的出液口的封口片自动闭合，因此在二次绥压室内形成比腔外高压的状态。当下一次启动时，在叶轮中速运行时产生高压后，又重新开启了进、出液口的封口片，使整个液压***恢复了良好运行，这样便形成了低压进泵口高压出泵口。The beneficial effects of the invention are:
The invention adopts the method of balancing the pressure difference in the pressure relief chamber, and automatically closes the suction and discharge port of the diversion liquid input pipe and the diversion liquid output pipe through the secondary pressure chamber and the pipe sealing device to form a partial pressure, when each cavity After the vacuum pressure enters the saturated state, the pump is started, and the pump pressure is continuously increased, and the sealing piece of the pipe sealing device is opened to make the liquid flow in one direction, and then the reflow piece in the pipe is opened, so that the entire liquid sealing system forms a circulating flow. Since the liquid operation inertia is generated when the secondary pressure chamber is stopped, the liquid inlet of the diversion liquid input pipe and the sealing piece of the liquid outlet of the diversion liquid output pipe are automatically closed, so The state in the secondary pressure chamber is higher than the pressure outside the chamber. When the next start, when the high pressure is generated during the middle speed operation of the impeller, the sealing piece of the inlet and outlet ports is reopened, so that the entire hydraulic system is restored to good operation, thus forming a high pressure outlet port of the low pressure inlet pump port.
本发明采用缓压室平衡压差的方式，通过二次绥压室和管道封口装置，将导流液体输入管和导流液体输出管的吸排口自动封闭而形成分缓压力，当各腔体内真空压进入饱和状态后，启动该泵，泵压力不断增加的同时，将管道封口装置的封口片开启后使液体单向流动，然后开启管道中的回流片，使整个液态密闭***形成循环流动。由于二次绥压室内在停止运行时，产生液体运行惯性，在其作用下，使得导流液体输入管的进液口和和导流液体输出管的出液口的封口片自动闭合，因此在二次绥压室内形成比腔外高压的状态。当下一次启动时，在叶轮中速运行时产生高压后，又重新开启了进、出液口的封口片，使整个液压***恢复了良好运行，这样便形成了低压进泵口高压出泵口。The beneficial effects of the invention are:
The invention adopts the method of balancing the pressure difference in the pressure relief chamber, and automatically closes the suction and discharge port of the diversion liquid input pipe and the diversion liquid output pipe through the secondary pressure chamber and the pipe sealing device to form a partial pressure, when each cavity After the vacuum pressure enters the saturated state, the pump is started, and the pump pressure is continuously increased, and the sealing piece of the pipe sealing device is opened to make the liquid flow in one direction, and then the reflow piece in the pipe is opened, so that the entire liquid sealing system forms a circulating flow. Since the liquid operation inertia is generated when the secondary pressure chamber is stopped, the liquid inlet of the diversion liquid input pipe and the sealing piece of the liquid outlet of the diversion liquid output pipe are automatically closed, so The state in the secondary pressure chamber is higher than the pressure outside the chamber. When the next start, when the high pressure is generated during the middle speed operation of the impeller, the sealing piece of the inlet and outlet ports is reopened, so that the entire hydraulic system is restored to good operation, thus forming a high pressure outlet port of the low pressure inlet pump port.
由于高压220V电压的电机线圈完全是处在一个高密封的腔体内，即由耐温耐压固化胶将电机线圈密封在壳体内，其绝缘等级在100MΩ—150MΩ之间，具有超强绝缘等级。在壳体后侧还设有压力平衡孔，这样，电机线圈的散热依靠腔体内耐温耐压固化胶（隔层介质）交换热能后，依靠泵液室、二次绥压室等液腔内的液体流动将热能带走，达到有效的散热。Since the motor coil of the high voltage 220V voltage is completely in a high-sealed cavity, the motor coil is sealed in the casing by the temperature-resistant and pressure-resistant curing glue, and the insulation level is between 100MΩ and 150MΩ, and has a super insulation class. A pressure balance hole is also arranged on the rear side of the casing, so that the heat dissipation of the motor coil depends on the temperature and pressure resistant curing glue (the interlayer medium) in the cavity, and the heat is exchanged, and the liquid chamber is used in the liquid chamber such as the pumping chamber and the secondary pressure chamber. The liquid flow takes heat away for effective heat dissipation.
另外，电机转子的转轴是以高压陶瓷经超高温烧制而成，具有超强的耐磨防腐性能，叶轮采用不锈钢HB—304A的钢材制作，动力惯性强、耐腐、耐磨性高。In addition, the rotating shaft of the motor rotor is made of high-pressure ceramics and is super-high temperature fired. It has superior wear-resisting and anti-corrosion performance. The impeller is made of stainless steel HB-304A steel, with strong dynamic inertia, corrosion resistance and high wear resistance.
【附图说明】
图1是本发明剖视结构示意图。[Description of the Drawings]
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic cross-sectional view of the present invention.
图1是本发明剖视结构示意图。[Description of the Drawings]
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic cross-sectional view of the present invention.
【具体实施方式】【detailed description】
如图1所示，一种微型真空液压泵，包括壳体1、端盖2、导流液体输入管3、导流液体输出管4、叶轮5、电机转子6、电机线圈7和轴套8，所述端盖2密封于壳体1的一端，叶轮5安装在电机转子6的转轴60上，电机转子6与轴套8装配后固定在壳体1内并通过电机线圈7驱动转动；电机线圈7分为第一组线圈70和第二组线圈71，在壳体1内设有两个用于布置第一组线圈70和第二组线圈71的密封腔体；在壳体1内还设有密封的泵液室10和二次绥压室11，二次绥压室11与泵液室10连通，电机转子6转轴60上的叶轮5工作将液体从导流液体输入管3引入后经泵液室10、二次绥压室11和导流液体输出管4排出；在导流液体输入管3和导流液体输出管4内分别设有停机时防止泵液室10和二次绥压室11内的液体泄漏的管道封口装置9，所述管道封口装置9包括固定轴90、可在管道内滑动的轴套91、抽空弹簧92和封口片93，封口片93固定在固定轴90端部并安装在管道的阶梯口外侧，所述轴套91和抽空弹簧92安装在固定轴90上并位于管道的阶梯口的内侧。As shown in FIG. 1 , a miniature vacuum hydraulic pump includes a casing 1 , an end cover 2 , a diversion liquid input pipe 3 , a diversion liquid output pipe 4 , an impeller 5 , a motor rotor 6 , a motor coil 7 , and a bushing 8 . The end cover 2 is sealed at one end of the housing 1. The impeller 5 is mounted on the rotating shaft 60 of the motor rotor 6. The motor rotor 6 and the sleeve 8 are assembled and fixed in the housing 1 and driven to rotate by the motor coil 7; The coil 7 is divided into a first set of coils 70 and a second set of coils 71, and two sealed cavities for arranging the first set of coils 70 and the second set of coils 71 are provided in the housing 1; A sealed pumping chamber 10 and a secondary pressure chamber 11 are provided. The secondary pressure chamber 11 is in communication with the pumping chamber 10. The impeller 5 on the rotating shaft 60 of the motor rotor 6 is operated to introduce liquid from the diverting liquid inlet pipe 3. The pumping chamber 10, the secondary pressure chamber 11 and the diverting liquid output tube 4 are discharged; and the pumping liquid chamber 10 and the secondary crucible are respectively provided in the diversion liquid input pipe 3 and the diversion liquid output pipe 4 respectively. a pipe sealing device 9 for leaking liquid in the pressure chamber 11, the pipe sealing device 9 comprising a fixed shaft 90, a sleeve 91 slidable in the pipe, and an evacuated projectile 92 and the sealing sheet 93, the sealing sheet 93 is fixed to an end portion of the fixed shaft 90 and is mounted on the outer stepped inlet duct, the inner sleeve 91 and the evacuation opening spring 92 is mounted on the stepped fixing shaft 90 and of the conduit.
在端盖2侧设有用于密封泵液室10和二次绥压室11的前耐压密封盖20，对应的壳体1后侧设有对电机转子6密封的后耐压密封盖21，在壳体1内还设有对密封泵液室10、二次绥压室11、电机线圈7密封的耐温耐压固化胶22；所述前耐压密封盖20上设有与所述泵液室10贯通的气流分压孔200。由于高压220V电压的电机线圈7由耐温耐压固化胶22将其密封在壳体1内，完全是处在一个高密封的腔体内，其绝缘等级在100MΩ—150MΩ之间，具有超强绝缘等级；而在壳体1后侧还设有压力平衡孔23，这样，电机线圈7的散热依靠腔体内耐温耐压固化胶22（隔层介质）交换热能后，依靠泵液室10、二次绥压室11和压力平衡孔23中液腔内的液体流动将热能带走，达到有效的散热。A front pressure sealing cover 20 for sealing the pumping chamber 10 and the secondary pressure chamber 11 is disposed on the side of the end cover 2, and a rear pressure-resistant sealing cover 21 for sealing the motor rotor 6 is disposed on the rear side of the corresponding housing 1. A temperature-resistant pressure-resistant adhesive 22 for sealing the sealed pumping chamber 10, the secondary pressure chamber 11, and the motor coil 7 is further disposed in the housing 1; the front pressure sealing cover 20 is provided with the pump The airflow dividing hole 200 through which the liquid chamber 10 passes. Since the high-voltage 220V voltage motor coil 7 is sealed in the casing 1 by the temperature-resistant pressure-resistant adhesive 22, it is completely in a high-sealed cavity, and its insulation level is between 100 MΩ and 150 MΩ, and it has super insulation. The pressure balance hole 23 is further disposed on the rear side of the casing 1, so that the heat dissipation of the motor coil 7 relies on the heat-resistant and pressure-resistant adhesive 22 (interlayer medium) in the cavity to exchange heat energy, and relies on the pumping chamber 10 and 2 The liquid flow in the liquid chamber in the secondary pressure chamber 11 and the pressure balance hole 23 carries away the heat energy to achieve effective heat dissipation.
同时电机转子6的转轴60采用高温耐磨瓷轴制成，具有超强的耐磨防腐性能，叶轮5采用不锈钢HB—304A制成，动力惯性强、耐腐、耐磨性高。At the same time, the rotating shaft 60 of the rotor 6 of the motor is made of high-temperature wear-resistant porcelain shaft, which has superior wear-resisting and anti-corrosion performance. The impeller 5 is made of stainless steel HB-304A, with strong dynamic inertia, high corrosion resistance and high wear resistance.
工作时，壳体1上220V电源引线孔12内电源线通电给电机线圈7，电机转子6转轴60上的叶轮5工作，当各腔体内真空压进入饱和状态后，泵压力不断增加的同时，将管道封口装置9的封口片93开启，使液体单向流动，将液体从导流液体输入管3引入后经气流分压孔200、泵液室10、二次绥压室11和导流液体输出管4排出。由于二次绥压室11内在该泵停止运行时，其内的液体产生液体运行惯性，在运行惯性作用下，在二次绥压室内形成比腔外高压的状态，然后通过管道封口装置，使得导流液体输入管3的进液口和和导流液体输出管4的出液口的封口片93自动闭合，当下一次启动时，在叶轮5中速运行时产生高压后，又重新开启了进、出液口的封口片93，使整个液压***恢复了良好运行，这样便形成了低压进泵口高压出泵口，使得该泵可在负压条件下将液体以恒定压力传送。During operation, the power line in the 220V power lead hole 12 of the casing 1 is energized to the motor coil 7, and the impeller 5 on the rotating shaft 60 of the motor rotor 6 is operated. When the vacuum pressure of each cavity is saturated, the pump pressure is continuously increased. The sealing piece 93 of the pipe sealing device 9 is opened to make the liquid flow in one direction, and the liquid is introduced from the diversion liquid input pipe 3 through the air flow dividing hole 200, the pumping chamber 10, the secondary pressure chamber 11 and the diversion liquid. The output pipe 4 is discharged. Since the liquid in the secondary pressure chamber 11 stops running when the pump stops running, the liquid inertia is generated in the secondary pressure chamber under the action of the inertia, and then the pipeline sealing device is used. The liquid inlet of the diversion liquid input pipe 3 and the sealing piece 93 of the liquid outlet of the diversion liquid output pipe 4 are automatically closed, and when the next start is started, the high pressure is generated when the impeller 5 is running at a medium speed, and then reopened. The sealing piece 93 of the liquid outlet restores the entire hydraulic system to a good operation, thus forming a high pressure outlet port of the low pressure inlet port, so that the pump can deliver the liquid at a constant pressure under a negative pressure condition.
以上所述实施例只是为本发明的较佳实施例，并非以此限制本发明的实施范围，凡依本发明之形状、构造及原理所作的等效变化，均应涵盖于本发明的保护范围内。
The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. The equivalent variations of the shapes, structures, and principles of the present invention are intended to cover the scope of the present invention. Inside.
Claims (7)
- 一种微型真空液压泵，包括壳体、端盖、导流液体输入管、导流液体输出管、叶轮、电机转子、电机线圈和轴套，所述端盖密封于壳体的一端，叶轮安装在电机转子的转轴上，电机转子与轴套装配后固定在壳体内并通过电机线圈驱动转动；其特征在于， A miniature vacuum hydraulic pump includes a casing, an end cover, a diversion liquid input pipe, a diversion liquid output pipe, an impeller, a motor rotor, a motor coil and a bushing, and the end cap is sealed at one end of the casing, and the impeller is mounted On the rotating shaft of the motor rotor, the motor rotor and the shaft are assembled and fixed in the housing and driven to rotate by the motor coil;电机线圈分为多组，在壳体内设有多个用于布置多组电机线圈的密封腔体；The motor coils are divided into a plurality of groups, and a plurality of sealed cavities for arranging a plurality of sets of motor coils are disposed in the housing;在壳体内还设有密封的泵液室和二次绥压室，二次绥压室与泵液室连通，电机转子转轴上的叶轮工作将液体从导流液体输入管引入后经泵液室、二次绥压室和导流液体输出管排出；A sealed pumping chamber and a secondary pressure chamber are also arranged in the housing, and the secondary pressure chamber is in communication with the pumping chamber. The impeller on the rotor shaft of the motor is introduced from the diversion liquid input tube and then through the pump chamber. , the second pressure chamber and the diversion liquid output tube are discharged;在导流液体输入管和导流液体输出管内分别设有停机时防止泵液室和二次绥压室内的液体泄漏的管道封口装置。 A pipe sealing device for preventing liquid leakage in the pumping chamber and the secondary pressure chamber during shutdown is respectively provided in the diversion liquid input pipe and the diversion liquid output pipe.
- 根据权利要求1所述微型真空液压泵，其特征在于，所述管道封口装置包括固定轴、可在管道内滑动的轴套、抽空弹簧和封口片，封口片固定在固定轴端部并安装在管道的阶梯口外侧，所述轴套和抽空弹簧安装在固定轴上并位于管道的阶梯口的内侧。A micro vacuum hydraulic pump according to claim 1, wherein said pipe sealing device comprises a fixed shaft, a sleeve slidable in the pipe, an evacuation spring and a sealing piece, and the sealing piece is fixed at the end of the fixed shaft and is mounted on Outside the stepped opening of the pipe, the bushing and the evacuation spring are mounted on the fixed shaft and are located inside the stepped opening of the pipe.
- 根据权利要求2所述微型真空液压泵，其特征在于，所述端盖侧设有用于密封泵液室和二次绥压室的前耐压密封盖，对应的壳体后侧设有对电机转子密封的后耐压密封盖，在壳体内还设有对密封泵液室、二次绥压室、电机线圈密封的耐温耐压固化胶。The micro vacuum hydraulic pump according to claim 2, wherein the end cover side is provided with a front pressure sealing cover for sealing the pumping chamber and the secondary pressure chamber, and the corresponding housing is provided with a pair of motors on the rear side The rear pressure-resistant sealing cover of the rotor seal is provided with a temperature-resistant pressure-resistant curing glue for sealing the pumping liquid chamber, the secondary rolling chamber and the motor coil in the casing.
- 根据权利要求3所述微型真空液压泵，其特征在于，所述壳体后侧还设有压力平衡孔。The micro vacuum hydraulic pump according to claim 3, wherein the rear side of the housing is further provided with a pressure balance hole.
- 根据权利要求1或4所述微型真空液压泵，其特征在于，所述电机转子的转轴采用高温耐磨瓷轴制成。The micro vacuum hydraulic pump according to claim 1 or 4, wherein the rotating shaft of the motor rotor is made of a high temperature wear resistant ceramic shaft.
- 根据权利要求1或4所述微型真空液压泵，其特征在于，所述叶轮采用不锈钢HB—304A制成。A micro vacuum hydraulic pump according to claim 1 or 4, wherein said impeller is made of stainless steel HB-304A.
- 根据权利要求3所述微型真空液压泵，其特征在于，所述前耐压密封盖上设有与所述泵液室贯通的气流分压孔。The micro vacuum hydraulic pump according to claim 3, wherein said front pressure-resistant sealing cover is provided with a gas flow dividing hole penetrating through said pumping chamber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100995073A CN102141043A (en) | 2011-04-20 | 2011-04-20 | Minitype vacuum hydraulic pump |
| CN201110099507.3 | 2011-04-20 |
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| WO2012142780A1 true WO2012142780A1 (en) | 2012-10-26 |
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| PCT/CN2011/074252 WO2012142780A1 (en) | 2011-04-20 | 2011-05-18 | Minitype vacuum hydraulic pump |
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| WO (1) | WO2012142780A1 (en) |
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| CN105179265A (en) * | 2015-09-11 | 2015-12-23 | 湖州周吴鼎盛化工有限公司 | Vacuum pump |
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| WO2005011087A1 (en) * | 2003-07-24 | 2005-02-03 | Tesma International Inc. | Electric fluid pump |
| US20070286723A1 (en) * | 2006-04-28 | 2007-12-13 | Olai Ihle | Centrifgal pump |
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| CN201953674U (en) * | 2011-04-20 | 2011-08-31 | 惠州市新力达制冷技术有限公司 | Micro vacuum hydraulic pump |
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2011
- 2011-04-20 CN CN2011100995073A patent/CN102141043A/en active Pending
- 2011-05-18 WO PCT/CN2011/074252 patent/WO2012142780A1/en active Application Filing
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| CN2363097Y (en) * | 1999-01-07 | 2000-02-09 | 张坤 | Permanent miniature submerged pump |
| WO2005011087A1 (en) * | 2003-07-24 | 2005-02-03 | Tesma International Inc. | Electric fluid pump |
| US20070286723A1 (en) * | 2006-04-28 | 2007-12-13 | Olai Ihle | Centrifgal pump |
| JP2008008222A (en) * | 2006-06-29 | 2008-01-17 | Nidec Sankyo Corp | Pump device |
| CN101732769A (en) * | 2010-01-26 | 2010-06-16 | 浙江大学 | Implantable blood pump adopting driven suspension bearing |
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