CN201731120U - Check valve - Google Patents

Check valve Download PDF

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Publication number
CN201731120U
CN201731120U CN2010202438130U CN201020243813U CN201731120U CN 201731120 U CN201731120 U CN 201731120U CN 2010202438130 U CN2010202438130 U CN 2010202438130U CN 201020243813 U CN201020243813 U CN 201020243813U CN 201731120 U CN201731120 U CN 201731120U
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CN
China
Prior art keywords
valve
sealing
hole
seat
cover
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CN2010202438130U
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Chinese (zh)
Inventor
严杰波
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宁波凯波集团有限公司
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Priority to CN2010202438130U priority Critical patent/CN201731120U/en
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Publication of CN201731120U publication Critical patent/CN201731120U/en

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Abstract

The utility model discloses a one-way valve, belonging to a fluid control device. The existing heating core and the water pump have poor sealing performance, and are easy to leak water. The one-way valve comprises a valve seat, a sealing valve core, a pressure spring and a valve cover and is characterized in that a valve hole is arranged on the valve seat; the valve cover is connected on the valve seat; the pressure spring is arranged between the sealing valve core and the valve cover, and is supported by the valve cover, so as to lead the sealing valve core to close to the valve hole; an outlet is arranged on the valve cover; an inlet communicated with the valve hole is arranged on the valve seat; and the sealing valve core is provided with a conical sealing part contacting the edge of the port of the valve hole. By the contact of the conical sealing part and the edge of the port of the valve hole, the one-way valve can reach better sealing effect, and is not easy to leak. The one-way valve can be selectively used on required structures, such as the water supply pump and the heating core, so the functions of water flow direction control and pressure control are realized.

Description

单向阀 Check valve

技术领域 FIELD

[0001 ] 本实用新型属于流体控制装置,具体是用于控制水流方向的单向阀。 [0001] The present invention belongs to the fluid control device, in particular for controlling the direction of flow of the check valve. 背景技术 Background technique

[0002] 专利号为ZL02225164. 2、授权公告号为CN2543601Y的中国实用新型专利(下文简称专利文献1)公开了一种“蒸汽喷枪”技术方案,该专利文献1披露了一种“蒸汽发生器”(下文通称“发热芯”)的技术内容,该“蒸汽发生器”的工作需要供水泵4向其供水。 [0002] Patent No. ZL02225164. 2, authorized announcement No. Chinese utility model patent CN2543601Y (hereinafter referred to Patent Document 1) discloses a "steam gun" aspect, Patent Document 1 discloses a "steam generator "(hereinafter known as" heater ") of the technical content, the" working steam generator "pump 4 needs to supply water thereto.

[0003] 专利号为ZL02248889.8、授权公告号为CN2573097Y的中国实用新型专利(下文简称专利文献2)公开了一种“蒸汽清洁机”技术方案,该专利文献2披露了一种“发热芯”的技术内容,该“蒸汽清洁机”的工作需要水泵8向其供水。 [0003] Patent No. ZL02248889.8, authorized announcement No. of Chinese utility model patent CN2573097Y (hereinafter simply referred to Patent Document 2) discloses a "steam cleaning machine" aspect, Patent Document 2 discloses a "heater "the technical content of the" working steam cleaning machine "need to pump 8 to its water supply.

[0004] 结合实践及仔细分析上述两专利文献,可见二者存在以下缺陷:水泵密封性差,易漏水;且当“发热芯”内压力增大时,会导致水流倒流。 [0004] Practice and binding careful analysis of these two patent document, the visible presence of both the following disadvantages: poor sealing pump, easy to leakage; and when the "heater" pressure, will cause water flow back.

实用新型内容 SUMMARY

[0005] 本实用新型要解决的技术问题和提出的技术任务是克服现有发热芯水泵密封性差,易漏水的缺陷,提供单向阀的技术方案。 [0005] The present invention to solve the technical problem and proposed technical task is to overcome the conventional heat pump core poor sealing, easy leakage defects, to provide the technical solution of the check valve. 为此,本实用新型采用以下技术方案: To this end, the present invention adopts the following technical scheme:

[0006] 本实用新型的一种单向阀,包括阀座、密封阀芯、压力弹簧、阀盖,其特征是:所述的阀座上开设阀孔,所述的阀盖连接在所述的阀座上,所述的压力弹簧位于所述的密封阀芯与阀盖之间并由所述的阀盖支撑令所述的密封阀芯向所述的阀孔靠拢,所述的阀盖上设置出口,所述的密封阀芯具有接触所述阀孔端口边缘的圆锥状密封部。 [0006] The present invention one-way valve comprising a valve seat, the seal spool, a pressure spring, a valve cover, wherein: said valve bore defines a valve seat, said valve is connected to the cover valve seat by a compression spring positioned between said valve body and said valve cover seal bonnet seal spool is supported so that the closer to the valve hole of the valve cover provided on an outlet, said valve element having a conical sealing the sealing portion of the valve port of the edge of the contact hole.

[0007] 作为上述单向阀的优选技术措施,所述的密封阀芯具有一个从所述的密封部向后延伸的导引杆,所述的阀盖上具有一个导引孔,所述的导引杆位于所述的导引孔内。 [0007] As a preferred technical measure of the check valve, the seal spool has a guide rod extending rearwardly from said sealing portion, said valve cap having a guide hole, the the guide lever is positioned in the guide bore.

[0008] 作为上述单向阀的优选技术措施,所述的压力弹簧套在所述的导引杆上。 [0008] As a preferred technical measure of the check valve, the pressure of the spring guide rod in the sleeve.

[0009] 作为上述单向阀的优选技术措施,所述的阀盖与所述的阀座之间置放有密封圈。 [0009] As a preferred technical measure of the check valve, the valve cover and valve seat disposed between the sealing ring.

[0010] 本实用新型的另一种单向阀,包括阀座、密封阀芯、压力弹簧、阀盖,其特征是:所述的阀盖上开设阀孔,所述的阀盖连接在所述的阀座上,所述的压力弹簧位于所述的密封阀芯与阀盖之间并由所述的阀座支撑令所述的密封阀芯向所述的阀孔靠拢,所述的阀盖上设置进口,所述的密封阀芯具有接触所述阀孔端口边缘的圆锥状密封部。 [0010] The present invention further one-way valve comprising a valve seat, the seal spool, a pressure spring, a valve cover, wherein: said valve cover defines a valve bore, said valve connected to the cover above the valve seat by a compression spring positioned between the seal spool and the valve cover so that the seat is supported closer to the seal spool of said valve hole, said valve inlet cover is provided, said valve element having a conical sealing portion sealing the valve port of the edge of the contact hole.

[0011] 作为上述单向阀的优选技术措施,所述的密封阀芯具有一个从所述的密封部向后延伸的导引杆,所述的阀座上具有一个导引孔,所述的导引杆位于所述的导引孔内。 [0011] As a preferred technical measure of the check valve, the seal spool has a guide rod extending rearwardly from said sealing portion, said guide hole having a valve seat, the the guide lever is positioned in the guide bore.

[0012] 作为上述单向阀的优选技术措施,所述的压力弹簧套在所述的导引杆上。 [0012] As a preferred technical measure of the check valve, the pressure of the spring guide rod in the sleeve.

[0013] 作为上述单向阀的优选技术措施,所述的阀盖与所述的阀座之间置放有密封圈。 [0013] As a preferred technical measure of the check valve, the valve cover and valve seat disposed between the sealing ring.

[0014] 本实用新型的第三种单向阀,包括包括与阀孔配合的密封阀芯,其特征是:所述的密封阀芯具有接触所述阀孔端口边缘的圆锥状密封部。 [0014] the present invention a third one-way valve, comprising a valve body comprising a sealing fit with the valve bore, characterized in that: said valve body has a conical seal portion sealing the valve port of the edge of the contact hole.

[0015] 尤其是,所述的密封阀芯具有一个从所述的密封部向后延伸的导引杆。 [0015] In particular, said sealing valve body having a guide rod extending rearwardly from said sealing portion.

[0016] 本实用新型的单向阀,具有以下有益效果: [0016] The check valve according to the present invention, has the following advantages:

3[0017] 1、密封阀芯具有接触阀孔端口边缘的圆锥状密封部,通过该圆锥状密封部与阀孔端口边缘的接触可以达到较好的密封效果,不易泄漏。 3 [0017] 1, the valve body having a conical sealing port sealing portion contacts the valve hole edge, can achieve a better sealing effect by contact with the conical portion and the sealing edge of the valve port aperture, leakage hardly.

[0018] 2、可将本实用新型根据选用在所需的结构上,实现必要的功能。 [0018] 2, according to the present invention may be selected in a desired configuration, to achieve the necessary function.

附图说明 BRIEF DESCRIPTION

[0019] 图1是本实用新型的两种结构的单向阀应用在一个供水泵上的示意图。 [0019] FIG. 1 is a schematic view of the check valve applications invention two structures present in a water supply pump.

[0020] 图2是本实用新型的一种结构的单向阀应用在一个发热芯上的示意图。 [0020] FIG. 2 is a schematic view of a check valve applied invention of a structure in the present of a heater.

[0021] 图中标号说明: [0021] FIG Reference Numerals:

[0022] 1-单向阀,2-阀座,3-密封阀芯,4-压力弹簧,5-阀盖,6-阀孔,7-出口,9-圆锥状密封部,10-导引杆,11-导引孔,12-密封圈; [0022] 1- check valve seat 2-, 3- seal spool, 4- spring pressure, valve cover 5-, 6- valve bore, an outlet 7-, 9- conical seal portion, 10 guide rod guide hole 11-, 12- seal ring;

[0023] 01-单向阀,02-阀座,03-密封阀芯,04-压力弹簧,05-阀盖,06-阀孔,08-进口, 09-圆锥状密封部,010-导引杆,011-导引孔,012-密封圈; [0023] 01- check valve seat 02-, 03- seal spool, a pressure spring 04-, 05- valve cover, the valve hole 06-, 08- import, 09- conical sealing portion, the guide 010 rod guide hole 011-, 012- ring;

[0024] 13-发热芯,14-壳体,15-发热体,16-进水口,17-出汽口; [0024] 13- heater, 14 a housing, the heat generating element 15, 16 inlet, 17 an air outlet;

[0025] 18-泵体,19-活塞,20-泵腔。 [0025] The pump 18, 19 of the piston, the pump chamber 20.

具体实施方式 detailed description

[0026] 以下结合说明书附图对本实用新型做进一步说明。 [0026] The following description in conjunction with the accompanying drawings further illustrate the present invention do.

[0027] 参见图1,本实用新型的单向阀具有两种结构形式,其一如图1中的标号1所示,是包括阀座2、密封阀芯3、压力弹簧4、阀盖5,阀座2上开设阀孔6,阀盖5连接在阀座2上, 压力弹簧4位于密封阀芯3与阀盖5之间并由阀盖5支撑令密封阀芯3向阀孔6靠拢,阀盖5上设置出口7,密封阀芯3具有接触阀孔6端口边缘的圆锥状密封部9。 [0027] Referring to Figure 1, the check valve of the present invention having two structural forms, one shown in FIG. 1 reference numeral 1, comprising a valve seat 2, seal spool 3, the compression spring 4, the valve cover 5 , the valve seat defines a valve bore 6, the valve cover 5 is connected to the valve seat 2, the compression spring 4 so that the seal valve body 3 sealed by the valve spool and the valve cover 5 is supported between the lid 5 to close the valve hole 3 6 the valve cover 5 is provided on the outlet 7, the valve body 3 has a conical seal portion sealing edge contacts the valve port 6 hole 9. 通过该圆锥状密封部9与阀孔6端口边缘的接触可以达到较好的密封效果,不易泄漏。 By this conical portion 9 in contact with the sealing edge of the valve hole port 6 can achieve a better sealing effect, leakage hardly. 进一步的,密封阀芯3具有一个从密封部9向后延伸的导引杆10,阀盖5上具有一个导引孔11,导引杆10位于导引孔11内,以便密封阀芯3活动时对密封阀芯3导向避免偏移。 Further, the seal spool has a guide rod 3 extending from the sealing portion 10 rearwardly 9, the valve cover having a guide hole 511, the guide hole 10 is located within the guide rod 11, so as to seal the valve body 3 Events when the guide seal spool 3 shifted avoided. 压力弹簧4套在导引杆10上,施加弹力均勻,结构紧凑。 4 compression spring sleeved on the guide rods 10, elastic force is applied evenly, compact structure. 阀盖5与阀座2之间置放有密封圈12,保证密封。 Bonnet 5 and the valve seat 2 is placed between the sealing ring 12, to ensure sealing.

[0028] 本实用新型的单向阀的另一种结构形式如图1中的标号01所示,包括阀座02、密封阀芯03、压力弹簧04、阀盖05,阀盖05上开设阀孔06,阀盖5连接在阀座02上,压力弹簧04位于密封阀芯03与阀盖05之间并由阀座02支撑令密封阀芯03向阀孔06靠拢,阀盖05上设置进口08,密封阀芯3具有接触阀孔6端口边缘的圆锥状密封部09。 [0028] Reference numeral 01 is an alternative configuration of the present invention the check valve as shown, includes a valve seat 02, the seal valve body 03, the compression spring 04, the valve cover 05, valve cover 05 defines a valve hole 06, the valve cover 5 is connected to the valve seat 02, a compression spring 04 located in the seal spool 03 and the valve seat 02 between the cover 05 is supported by the valve body 03 so that seal 06 closer to the valve orifice, the valve cover 05 is provided on the inlet 08, the valve body 3 has a conical seal portion 09 in contact with the sealing edge of the valve port apertures 6. 通过该圆锥状密封部09与阀孔06端口边缘的接触可以达到较好的密封效果,不易泄漏。 Good sealing effect can be achieved by contacting the edge of the port 06 of the sealing portion 09 and the conical valve bore, leakage hardly. 进一步的, 密封阀芯03具有一个从密封部09向后延伸的导引杆010,阀座02上具有一个导引孔011, 导引杆010位于导引孔11内,以便密封阀芯03活动时对密封阀芯03导向避免偏移。 Further, the seal valve body 03 having a guide rod 010 extending rearwardly from the sealing portion 09, having a guide hole 011 on the valve seat 02, the guide rods 010 positioned within the guide hole 11, the valve body 03 to seal the active when the guide seal spool 03 to avoid offset. 压力弹簧04套在导引杆010上,施加弹力均勻,结构紧凑。 A compression spring 04 sleeved on the guide rods 010, to apply a uniform elastic force, compact structure. 阀盖05与阀座02之间置放有密封圈012,保证密封。 Valve cover 05 and the valve seat 012 disposed between the sealing ring 02, to ensure sealing.

[0029] 图1所示是本实用新型的两种结构的单向阀应用在一个供水泵上的示意图,在该图中,本实用新型的两种结构的单向阀的阀座2和02与供水泵的泵体制成一体,当泵体上活塞向下移动使泵腔体积增大、压力减小时,在泵腔压力与外界的压力差作用下,密封阀芯03被从阀孔06上推开,密封阀芯3更可靠的将阀孔6封堵,从而可以通过进口07将流体如水吸入泵腔;当泵体上活塞向上移动使泵腔体积减小、压力增大时,在泵腔压力与外界的压力差作用下,密封阀芯3被从阀孔6上推开,密封阀芯03更可靠的将阀孔06封堵,从而可以通过出口7将泵腔内的流体如水输送出去。 [0029] Figure 1 shows the application of the check valve of the present invention in a schematic view of two structures for the pump, in the drawing, the check valve seat of the present invention the two structures 2 and 02 the water supply pump and the pump body is formed integrally on the pump body when the piston moves down the pump chamber volume increases, the pressure decreases, the pump chamber under pressure and the outside pressure difference, the seal spool valve hole is from 0603 open, seal spool 3 more reliable sealing valve hole 6, can be fluid such as a suction pump 07 through the inlet chamber; pump body when the piston moves upwards the volume of the pump chamber decreases, the pressure increases, the pump under the pressure difference with the outside of the pressure chamber, the seal spool 3 is pushed away from the valve hole 6, a more reliable seal spool 03 will block the valve hole 06, thereby the pump chamber 7 through the outlet fluid such delivery out. 在该供水泵的工作过程中,通过圆锥状密封部与阀孔端口边缘的接触可以达到较好的密封效果,不易泄漏。 During operation of the supply pump, it is possible to achieve a better sealing effect by contact with the conical portion of the sealing edge of the valve port aperture, leakage hardly.

[0030] 图2是将图1中标号1单向阀应用在一个发热芯(发热芯13是在壳体14的内部空间内设置发热体15并在壳体14上设置进水口16和出汽口17)的出汽口上的示意图:将阀座2与发热芯13的壳体14制在一起,即利用壳体14制成阀座2,将发热芯13的出汽口17作为阀孔6,则当通过进水口16向发热芯13内输送水流经过发热体15加热产生蒸汽时, 由于压力弹簧4将密封阀芯3弹性压在阀孔6(即出汽口17)上,因此阀孔6暂时被封堵而不能排汽,随着发热芯13内产生蒸汽的增多,蒸汽压力升高,直至可以克服压力弹簧4的弹力而可以将密封阀芯3从阀孔6上推开而开启阀孔6,释放蒸汽,因此释放出来的蒸汽具有一定的压力(该压力由压力弹簧4的弹力决定,因此可以通过选用不同弹力的压力弹簧来确定阀孔6释放蒸汽的压力)且该压力可以保持稳定;而且,万一发热芯13堵塞,可通过单向 [0030] FIG 2 is a reference numeral 1 in FIG. 1 in a one-way valve applied heater (heat core 13 is disposed within the interior space of the housing 14 and the heat generating member 15 is provided a steam inlet 16 and the housing 14 a schematic view of the opening 17) of the steam outlet: the valve housing 2 and the heater 13 is made with 14, i.e. the housing 14 is made use of the seat 2, the heater air outlet 17 as the valve hole 13 6 , when the steam is generated through the water inlet 16 to the transport flow in the heating element 13 through heating body 15, since the compression spring 3 the resilient seal spool 4 will be pressed against the valve hole 6 (i.e., the steam outlet 17), so that the valve bore 6 is blocked and can not temporarily exhaust, with the increased steam generation heater 13, the vapor pressure increases, until the spring force overcomes the pressure spring 4 and the seal spool 3 may be pushed away from the valve hole and opening 6 valve bore 6, steam is released, so released steam has a certain pressure (the pressure is determined by the elastic force of the compression spring 4, it is possible to determine the pressure release steam valve bore 6 by use of different elastic force of a compression spring) and the pressure may stable; Moreover, if the heating core 13 blocked by one-way 阀1将发热芯13中的压力蒸汽释放泄压,避免爆炸危险,危及人身安全。 1 The pressure valve in the steam heater 13 to release the pressure relief, to avoid the risk of explosion, endangering personal safety. 由于通过圆锥状密封部与阀孔端口边缘的接触可以达到较好的密封效果,不易泄漏,保证释放出来的蒸汽压力稳定。 Since the conical sealing portion by contact with the edge of the valve port aperture can achieve a better sealing effect, leakage hardly ensure stable release steam pressure.

[0031] 本实用新型的核心是与阀孔配合的密封阀芯具有接触阀孔端口边缘的圆锥状密封部。 [0031] The core of the present invention is a spool valve hole sealed with a sealing portion having a conical edge contacts the valve port hole. 尤其是,密封阀芯具有一个从密封部向后延伸的导引杆。 In particular, the seal spool has a guide rod extending rearwardly from the sealing portion. 因此,虽然上文介绍了本实用新型的应用实例,但并不能解释为对本实用新型保护范围的限制,但凡具备了密封阀芯具有接触阀孔端口边缘的圆锥状密封部的结构,根据本实用新型的权利要求均可视为落入本实用新型的保护范围。 Thus, although the above-described application example of the present invention, but not to be construed as limiting the scope of the present invention novel protection, provided that the valve body includes a seal structure having a contact edge of the port hole conical valve sealing portion, according to the present invention new claims may be regarded as falling within the scope of protection of the present utility.

5 5

Claims (10)

  1. 单向阀(1),包括阀座(2)、密封阀芯(3)、压力弹簧(4)、阀盖(5),其特征是:所述的阀座(2)上开设阀孔(6),所述的阀盖(5)连接在所述的阀座(2)上,所述的压力弹簧(4)位于所述的密封阀芯(3)与阀盖(5)之间并由所述的阀盖(5)支撑令所述的密封阀芯(3)向所述的阀孔(6)靠拢,所述的阀盖(5)上设置出口(7),所述的密封阀芯(3)具有接触所述阀孔(6)端口边缘的圆锥状密封部(9)。 One-way valve (1) comprising a valve seat (2), a sealing valve body (3), a pressure spring (4), the bonnet (5), characterized in that: said valve seat defines a valve hole (2) ( 6), said bonnet (5) connected to said valve seat (2), said pressure spring (4) located in the seal spool (3) and the bonnet (5) and between (3) a closer seal spool (5) is supported so that the valve cover to the valve hole (6), said bonnet (5) an outlet (7), said sealing the valve body (3) having the valve hole (6) conical sealing portion (9) in contact with the edge of the port.
  2. 2.根据权利要求1所述的单向阀,其特征是所述的密封阀芯(3)具有一个从所述的密封部(9)向后延伸的导引杆(10),所述的阀盖(5)上具有一个导引孔(11),所述的导引杆(10)位于所述的导引孔(11)内。 2. A check valve according to claim 1, characterized in that said sealing valve body (3) has a guide rod (10) extending rearwardly from a portion of the seal (9), the bonnet (5) having a guide hole (11), said guide rod (10) is located within (11) of said guide hole.
  3. 3.根据权利要求2所述的单向阀,其特征是所述的压力弹簧(4)套在所述的导引杆(10)上。 3. The check valve according to claim 2, characterized in that the compression spring (4) sleeved on said guide rod (10).
  4. 4.根据权利要求1所述的单向阀,其特征是所述的阀盖(5)与所述的阀座(2)之间置放有密封圈(12)。 4. The check valve according to claim 1, characterized in that said bonnet (5) disposed between the seat (2) with a sealing ring (12).
  5. 5.单向阀(01),包括阀座(02)、密封阀芯(03)、压力弹簧(04)、阀盖(05),其特征是: 所述的阀盖(05)上开设阀孔(06),所述的阀盖(5)连接在所述的阀座(02)上,所述的压力弹簧(04)位于所述的密封阀芯(03)与阀盖(05)之间并由所述的阀座(02)支撑令所述的密封阀芯(03)向所述的阀孔(06)靠拢,所述的阀盖(05)上设置进口(08),所述的密封阀芯⑶具有接触所述阀孔(6)端口边缘的圆锥状密封部(09)。 The one-way valve (01), comprising a valve seat (02), a sealing valve body (03), a compression spring (04), the bonnet (05), characterized in that: said valve cap (05) defines a valve hole (06), said bonnet (5) connected to the valve seat (02), said compression spring (04) located in the seal spool (03) and said valve cover (05) of by the inter-seat (02) is supported so that the seal spool (03) closer to the valve bore (06), wherein said valve is provided on the cover (05) inlet (08), said ⑶ the seal spool of the valve has a contact hole (6) sealing the conical portion of the edge of the port (09).
  6. 6.根据权利要求5所述的单向阀,其特征是所述的密封阀芯(03)具有一个从所述的密封部(09)向后延伸的导引杆(010),所述的阀座(02)上具有一个导引孔(011),所述的导引杆(010)位于所述的导引孔(11)内。 Check valve according to claim 5, characterized in that said sealing valve body (03) has a guide rod (010) extending rearwardly from said sealing portion (09), said a valve seat having a guide hole (011) in (02), said guide rod (010) positioned within the guide bore (11) of claim.
  7. 7.根据权利要求6所述的单向阀,其特征是所述的压力弹簧(04)套在所述的导引杆(010)上。 7. The check valve according to claim 6, characterized in that said pressure spring around said guide rod (010) (04).
  8. 8.根据权利要求5所述的单向阀,其特征是所述的阀盖(05)与所述的阀座(02)之间置放有密封圈(012)。 Check valve according to claim 5, characterized in that said valve cover (05) disposed between the valve seat (02) a sealing ring (012).
  9. 9.单向阀,包括包括与阀孔配合的密封阀芯,其特征是:所述的密封阀芯具有接触所述阀孔端口边缘的圆锥状密封部。 9. The one-way valve, comprising a valve body comprising a sealing fit with the valve bore, characterized in that: said valve body has a conical seal portion sealing the valve port of the edge of the contact hole.
  10. 10.根据权利要求9所述的单向阀,其特征是所述的密封阀芯具有一个从所述的密封部向后延伸的导引杆。 10. The check valve according to claim 9, characterized in that said sealing valve body having a guide rod extending rearwardly from said sealing portion.
CN2010202438130U 2010-07-01 2010-07-01 Check valve CN201731120U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101915325A (en) * 2010-07-01 2010-12-15 宁波凯波集团有限公司 Check valve
CN103492773A (en) * 2011-03-17 2014-01-01 国民油井华高有限合伙公司 Poppet valve for pump systems with non-rigid connector to facilitate effective sealing
US9328729B2 (en) 2008-10-16 2016-05-03 National Oilwell Varco, L.P. Pumping systems with dedicated surge dampeners
CN105796025A (en) * 2016-05-25 2016-07-27 广东新宝电器股份有限公司 Steam mop
CN105863984A (en) * 2016-06-20 2016-08-17 常州市昊升电机有限公司 High-pressure flow stabilized type pump
CN106006518A (en) * 2016-08-04 2016-10-12 苏州科迪流体控制设备有限公司 Steam type auto-cleaning beverage valve
US9546648B2 (en) 2008-10-16 2017-01-17 National Oilwell Varco, L.P. Dampeners for pumping systems
US10094366B2 (en) 2008-10-16 2018-10-09 National Oilwell Varco, L.P. Valve having opposed curved sealing surfaces on a valve member and a valve seat to facilitate effective sealing

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9546648B2 (en) 2008-10-16 2017-01-17 National Oilwell Varco, L.P. Dampeners for pumping systems
US10094366B2 (en) 2008-10-16 2018-10-09 National Oilwell Varco, L.P. Valve having opposed curved sealing surfaces on a valve member and a valve seat to facilitate effective sealing
US9328729B2 (en) 2008-10-16 2016-05-03 National Oilwell Varco, L.P. Pumping systems with dedicated surge dampeners
CN101915325A (en) * 2010-07-01 2010-12-15 宁波凯波集团有限公司 Check valve
CN103492773A (en) * 2011-03-17 2014-01-01 国民油井华高有限合伙公司 Poppet valve for pump systems with non-rigid connector to facilitate effective sealing
CN105796025A (en) * 2016-05-25 2016-07-27 广东新宝电器股份有限公司 Steam mop
CN105796025B (en) * 2016-05-25 2018-11-06 广东新宝电器股份有限公司 A kind of steam mop
CN105863984A (en) * 2016-06-20 2016-08-17 常州市昊升电机有限公司 High-pressure flow stabilized type pump
CN106006518A (en) * 2016-08-04 2016-10-12 苏州科迪流体控制设备有限公司 Steam type auto-cleaning beverage valve

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