WO2007082421A1 - Soupape de distribution pour une pompe de transport de béton - Google Patents

Soupape de distribution pour une pompe de transport de béton Download PDF

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Publication number
WO2007082421A1
WO2007082421A1 PCT/CN2006/001706 CN2006001706W WO2007082421A1 WO 2007082421 A1 WO2007082421 A1 WO 2007082421A1 CN 2006001706 W CN2006001706 W CN 2006001706W WO 2007082421 A1 WO2007082421 A1 WO 2007082421A1
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WO
WIPO (PCT)
Prior art keywords
valve
turn
port
valve chamber
chamber
Prior art date
Application number
PCT/CN2006/001706
Other languages
English (en)
French (fr)
Inventor
Xiaogang Yi
Yongwei Li
Jianjun Jiang
Original Assignee
Sany Heavy Industry Co., Ltd.
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 Sany Heavy Industry Co., Ltd. filed Critical Sany Heavy Industry Co., Ltd.
Priority to US11/919,764 priority Critical patent/US20090065074A1/en
Priority to EP06753147A priority patent/EP1978249A4/en
Publication of WO2007082421A1 publication Critical patent/WO2007082421A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F04B15/023—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
    • F04B7/0007—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber and having a rotating movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
    • F04B7/0011—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber and having an oscillating movement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump

Definitions

  • the invention relates generally to the field of construction machinery, and in particular to a distribution valve for a concrete pump.
  • the advantage of the gate valve is that the suction port is large, and since there is only a stirring blade in the hopper, there is no working device like the s valve, which affects the working volume and affects the suction performance, so the suction performance of the gate valve is good, especially For coarse aggregate concrete, the advantage is more obvious; but the gate valve cannot withstand the large working pressure (generally around 8Mpa) due to the working characteristics of its gate. For high pressure pumping, it can not meet the requirements, while the S valve
  • the advantage is that the rolling pressure of the system mainly acts on the inner wall of the round pipe.
  • the entire pipe wall is evenly subjected to tensile force and can withstand large pressure.
  • the working pressure can reach 16Mpa or even larger, but the S pipe of the S valve is placed in the hopper. Inside, it occupies a certain volume of the hopper, and at the same time affects the suction of the conveying cylinder.
  • the technical problem to be solved by the present invention is that, in view of the technical problems existing in the prior art, the present invention provides a distribution valve for a concrete pump which has both good suction performance and high pressure pumping.
  • a distribution valve for a concrete pump characterized in that it comprises a valve body, a rocker arm, an end cover, a left-turn valve and a right-turn valve, the end The cover is installed at two ends of the valve body, and the valve body is divided into a left valve chamber and a right valve chamber, and the left rotation valve and the right rotation valve are respectively disposed in the left valve chamber and the right valve chamber; the valve body is in the left valve chamber and the right valve body
  • the feed port, the suction port and the discharge port are respectively opened at the corresponding positions of the valve chamber; the left turn valve and the right turn valve are respectively connected to the rocker arms located outside the two ends of the valve body through the rotating shaft; the left turn wide and the right
  • the rotary valve has a cylindrical shape, and a through hole for communicating the inlet port with the suction port or the suction port and the discharge port is provided on the cylinder surface.
  • the diameters of the two ends of the through hole are not equal, and the diameter of the side communicating with the suction port is larger than the diameter of the side communicating with the inlet or the discharge port.
  • the left valve cavity is left
  • the suction port and the left discharge port are kept in communication through the left through hole
  • the right feed port and the right suction port of the right valve cavity are kept in communication.
  • the left and right valve chambers in the crucible are separated by a spacer or a partition.
  • An outer bushing and an inner bushing are disposed between the left turn valve and the right turn valve and the valve body.
  • the rotating shaft is fixed on the bearing seat and the bearing on the end cover, and a sealing ring is arranged between the rotating shaft and the end cover.
  • the distribution valve for the concrete pump of the invention separates the distribution valve from the hopper, so that the use volume of the hopper is increased, the hopper blade agitation is more sufficient, and the feed port is oriented. It is arranged obliquely, which is more conducive to feeding, especially for the pumping of coarse aggregate, and the suction performance is better.
  • the pumping pressure can be The hook acts on the wall of the hole, and the wall of the hole is evenly pulled, which can withstand a large load.
  • the rotary valve closes the discharge port and receives the back pressure from the delivery pipe.
  • the rotary valve part is a cylindrical surface, which can transmit the back pressure evenly to the cylinder, and is transmitted to the valve body through the rotary valve to avoid local stress on the rotary valve, resulting in cracking or damage at the weakest part of the hole wall of the rotary valve.
  • Figure 1 is a front elevational view showing the structure of the present invention
  • Figure 2 is a cross-sectional view of the A-A of Figure 1;
  • Figure 3 is a schematic view showing the structure of the cavity where the left rotary valve is located in the working state of the present invention
  • Figure 4 is a schematic view showing the structure of the cavity where the right rotary valve is located in the working state of the present invention
  • Figure 5 is a schematic structural view of a left rotary valve of the present invention.
  • Figure 6 is a schematic view of the installation of the present invention.
  • a distribution valve for a concrete pump of the present invention as shown in Figs. 1, 2 and 6, which comprises a valve body 5, a rocker arm 1, an end cover 2, a left rotary valve 4 and a right rotary valve 9, and an end cover 2 Mounted at both ends of the valve body 5, divided into a left valve chamber 51 and a right valve chamber 52 in the cavity of the cylindrical valve body 5, the left valve chamber 51 and the right valve chamber 52 in the valve body 5 pass through the spacer 8 or Separated by partitions, an oil filling passage is formed in the partition sleeve 8, and high-pressure lubricating oil is injected to facilitate lubrication of the valve body 5 and prevent concrete slurry.
  • a spacer is mounted on the spacer 8 to prevent the two chambers from collapsing; the left-turn valve 4 and the right-turn valve 9 which are flexibly rotatable are respectively disposed in the left valve chamber 51 and the right valve chamber 52, and the left-turn valve 4 and the right-turn valve
  • the outer bushing 3 and the inner bushing 7 are installed between the valve 9 and the valve body 5 via the key 6, so that the left turn valve 4 and the right turn valve 9 can be prevented from being directly worn away to reduce the service life and wear.
  • the outer bushing 3 and the inner bushing 7 are.
  • the valve body 5 is provided with a feed port, a suction port and a discharge port at respective positions of the left valve chamber 51 and the right valve chamber 52; the left rotary valve 4 and the right rotary valve 9 are respectively passed through the rotary shaft 14 and the spline
  • the rocker arms 1 located outside the two ends of the valve body 5 are connected, and the rocker arm 1 is connected to the shaft heads of the left-turn valve 4 and the right-turn valve 9 by splines, and is fixed by the lock nut 13, and the cylinder telescopically moves the rocker arm 1 to rotate.
  • the spline drives the left rotary valve 4 and the right rotary valve 9 to complete the reversing, wherein the rotating shaft 14 is fixed on the bearing housing 11 and the bearing 12 on the end cover 2, and a sealing ring 10 is disposed between the rotating shaft 14 and the end cover 2.
  • the left rotary valve 4 and the right rotary valve 9 are cylindrical, and the cylindrical surfaces thereof are respectively provided with through holes for communicating the feed port with the suction port or the suction port and the discharge port. The diameters of the two ends of the hole are not equal, and the diameter of the side communicating with the suction port is larger than the diameter of the side communicating with the feed port or the discharge port. As shown in FIG. 3 and FIG.
  • the distribution valve for a concrete pump of the present invention is installed in a pumping system of a concrete pump, and the pumping system includes a hopper, a Y-shaped pipe, a new distribution valve, a conveying cylinder, a main cylinder, a swinging mechanism, and the like. Referring to FIG.
  • the crank cylinder 1 pushes the rocker arm 1 to rotate the left rotary valve 4 through the cylinder of the left swinging mechanism, so that the left through hole 15 on the left rotary valve 4 communicates with the left feed port 16 and the left suction port 17, and then the left main
  • the cylinder moves backward, and the concrete in the hopper is sucked into the left conveying cylinder through the left through hole 15 of the distribution valve to complete the suction process; after the left main cylinder is moved backward, the cylinder of the swinging mechanism acts to push the rocker arm 1
  • the left rotary valve 4 is driven to rotate in the reverse direction, so that the left through hole 15 on the left rotary valve 4 communicates with the left suction port 17 and the left discharge port 18, and the left feed port 16 is closed, and then the left main cylinder moves forward.
  • the swing mechanism moves, pushing the rocker arm 1 to drive the right rotary valve 9 to rotate in the reverse direction, so that the right through hole 19 on the right rotary valve 9 communicates with the right suction port 21 and the right discharge port 22, and simultaneously closes the right feed port 20, and then
  • the left main cylinder moves forward, pumping the concrete in the hopper through the right through hole 19 of the distribution valve into the gamma tube and the delivery tube.
  • the suction operation is performed on the left side
  • the pumping action is performed on the right side.
  • the pumping action is performed on the left side
  • the suction operation is performed on the right side
  • the left and right sides are alternately operated to complete the entire pumping process.

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

Description

用于混凝土泵的分配阀
技术领域
本发明主要涉及到建筑机械领域， 特指一种用于混凝土泵的分配阀。
背景技术
随着国民经济加速发展， 极大地推动了我国建筑业的迅猛发展， 高层式大型化的钢 混结构的建筑物如雨后春笋，特别是近年来，随着商品混凝土的迅速发展与日益规范化， 更大地显示了混凝土泵其高效率、高质量以及低消耗等优势， 迅速取代传统落后的混凝 土浇灌方法， 引起了国内外建筑业的高度重视。
目前， 在国内外市场上， 混凝土泵分配阀的主要方式有两种： 闸板阀和 S阀。 闸板 阀的优点在于吸料口大， 且由于料斗内只有搅拌叶片， 没有象 s阀那样的工作装置， 既 影响工作容积，又影响吸料性能，所以闸板阀的吸料性能好，尤其对于粗骨料的混凝土， 优势更明显；但闸板阀由于其闸板的工作特点，无法承受较大的工作压力（一般在 8Mpa 左右）， 对于高压泵送， 无法满足要求， 而 S阀的优点在于， 系统的髙压主要作用圆管 内壁上， 工作时整个管壁均匀受拉力作用， 可承受较大的压力， 工作压力可达 16Mpa甚 至更大， 但由于 S阀的 S管置于料斗内， 占据了一定的料斗容积， 同时又影响到输送缸 的吸料。
发明内容
本发明要解决的技术问题就在于： 针对现有技术存在的技术问题， 本发明提供一种 既具备良好的吸料性能又可以满足高压泵送的用于混凝土泵的分配阀。
为了解决上述技术问题， 本发明提出的技术方案为： 一种用于混凝土泵的分配阀， 其特征在于： 它包括阀体、摇臂、端盖、左转阀和右转阀，所述端盖装设于阀体的两端， 阀体内分隔成左阀腔和右阓腔， 左转阀和右转阀分别设于左阀腔和右阀腔内； 阀体上在 左阀腔和右阀腔的相应位置处均开设有进料口、吸料口和出料口； 左转阀和右转阀分别 通过转轴与位于阀体两端外侧的摇臂相连； 所述左转阔和右转阀为圆柱状， 其柱面上开 设有用来使进料口与吸料口连通或吸料口与出料口连通的通孔。
所述通孔两端的口径不相等，与吸料口连通一侧的口径大于与进料口或出料口连通 一侧的口径。
所述左阀腔的左进料口和左吸料口通过左通孔保持连通时，右阀腔的右吸料口和右 出料口通过右通孔保持连通； 所述左阀腔的左吸料口和左出料口通过左通孔保持连通 时， 右阀腔的右进料口和右吸料口保持连通。 所述阓体内的左阀腔和右阀腔通过隔套或隔板分隔而成。
所述左转阀和右转阀与阀体之间设有外衬套和内衬套。
所述转轴固定于端盖上的轴承座和轴承上， 该转轴与端盖之间设有密封圈。
与现有技术相比， 本发明的优点就在于： 本发明用于混凝土泵的分配阀由于将分配 阀与料斗分开配置，使料斗的使用容积增大，料斗叶片搅动更充分，进料口向斜下布置， 更利于进料， 特别是对粗骨料的泵送， 吸料性能更佳； 同时， 在泵送过程中， 由于分配 阀的通孔为一类似圆柱形， 泵送压力可以均勾的作用在孔壁上， 孔壁均匀受拉， 可以承 受较大的载荷， 在吸料过程中， 转阀封闭出料口， 要承受来自输送管的背压， 此时封闭 出料口的转阀部分为一圆柱面， 可以将背压均匀传递到圆柱体上， 通过转阀传递到阀体 上， 避免转阀局部受力， 导致转阀上孔壁最薄弱处出现开裂或破损。
附图说明
图 1是本发明结构的主视示意图；
图 2是图 1中 A- A的剖视示意图；
图 3是本发明工作状态时左转阀所在腔体的结构示意图；
图 4是本发明工作状态时右转阀所在腔体的结构示意图；
图 5是本发明左转阀的结构示意图；
图 6是本发明的安装示意图。
图例说明
1、 摇臂 2、 盖 3、 外衬套 4、 左转阀
5、 阔体 6、 键 '7、 内衬套 8、 隔套
9、 右转阀 10、 密封圈 11、 轴承座 12、 轴承
13、 锁紧螺母 14、 转轴 15、 左通孑 L 16、 左进料口
17、 左吸料口 18、 左出料口 19、 右通孔 20、 右进料口
21、 右吸料口 22、 右出料口 51、 左阀腔 52、 右阀腔
具体实施方式
以下将结合附图和具体实施例对本发明做进一步详细说明。
如图 1、图 2和图 6所示的本发明的用于混凝土泵的分配阀，它包括阀体 5、摇臂 1、 端盖 2、 左转阀 4和右转阀 9， 端盖 2装设于阀体 5的两端， 在圆柱形的阀体 5腔内分 隔成左阀腔 51和右阀腔 52， 阀体 5内的左阀腔 51和右阀腔 52通过隔套 8或隔板分隔 而成， 隔套 8上开设注油通道， 注入高压润滑油， 便于阀体 5的润滑和防止混凝土浆的 渗入， 隔套 8上安装有密封件， 防止两腔串通； 可灵活转动的左转阀 4和右转阀 9分别 设于左阀腔 51和右阀腔 52内 ,左转阀 4和右转阀 9与阀体 5之间通过键 6装设有外衬 套 3和内衬套 7， 这样的话， 可以防止左转阀 4和右转阀 9直接遭到磨损而减少使用寿 命， 遭到磨损的是外衬套 3和内衬套 7。 阀体 5上在左阀腔 51和右阀腔 52的相应位置 处均开设有进料口、 吸料口和出料口； 左转阀 4和右转阀 9分别通过转轴 14和花键与 位于阀体 5两端外侧的摇臂 1相连，摇臂 1与左转阀 4和右转阀 9的轴头通过花键相连， 通过锁紧螺母 13固定， 油缸伸缩带动摇臂 1转动， 通过花键带动左转阀 4和右转阀 9 动作， 完成换向， 其中转轴 14固定于端盖 2上的轴承座 11和轴承 12上， 该转轴 14与 端盖 2之间设有密封圈 10。参见图 5所示，左转阀 4和右转阀 9为圆柱状，其柱面上分 别开设有用来使进料口与吸料口连通或吸料口与出料口连通的通孔，通孔两端的口径不 相等， 与吸料口连通一侧的口径大于与进料口或出料口连通一侧的口径。 如图 3和图 4 所示，本发明在某一个工作状态时，左阀腔 51上的左进料口 16和左吸料口 17通过左通 孔 15保持连通时， 右阀腔 52的右吸料口 21和右出料口 22通过右通孔 19保持连通； 同理,当在另一个工作状态时,左阀腔 51的左吸料口 17和左出料口 18通过左通孔 15保 持连通时， 右阀腔 52的右进料口 20和右吸料口 21保持连通。
工作原理： 本发明的用于混凝土泵的分配阀安装在混凝土泵的泵送系统中， 泵送系 统包括料斗、 Y字管、 新型分配阀、 输送缸、 主油缸、 摆摇机构等。 参见图 6， 通过左 侧摆摇机构的油缸推动摇臂 1带动左转阀 4转动， 使左转阀 4上的左通孔 15连通左进 料口 16、 左吸料口 17， 然后左主油缸向后动作， 将料斗中的混凝土通过分配阀的左通 孔 15吸入左输送缸内， 完成吸料过程； 在左主油缸向后动作到位后， 摆摇机构的油缸 动作， 推动摇臂 1带动左转阀 4反向转动， 使左转阀 4上的左通孔 15连通左吸料口 17 和左出料口 18, 同时关闭了左进料口 16, 然后左主油缸向前动作， 将料斗中的混凝土 通过分配阀的左通孔 15压入 Y字管和输送管内； 同理， 通过右侧的摆摇机构的油缸推 动摇臂 1带动右转阀 9转动，使右转阀 9上的右通孔 19连通右进料口 20、右吸料口 21， 然后右主油缸向后动作， 将料斗中的混凝土通过分配阀的右通孔 19吸入右输送缸内， 完成吸料过程； 在右主油缸向后动作到位后， 摆摇机构的油缸动作， 推动摇臂 1带动右 转阀 9反向转动，使右转阀 9上的右通孔 19连通右吸料口 21和右出料口 22， 同时关闭 了右进料口 20, 然后左主油缸向前动作， 将料斗中的混凝土通过分配阀的右通孔 19泵 送至 γ字管和输送管内。 当左侧进行吸料动作时， 右侧进行泵送动作， 然后， 左侧进行 泵送动作， 右侧进行吸料动作， 左右两侧交替动作， 完成整个泵送过程。

Claims

权 利 要 求
1、 一种用于混凝土泵的分配阀， 其特征在于： 它包括阀体 （5)、 摇臂 （1 )、 端盖 (2)、 左转阀 （4)和右转阀 （9)， 所述端盖（2)装设于阀体（5) 的两端， 阀体 （5) 内分隔成左阀腔（51 )和右阀腔（52)，左转阀（4)和右转阀（9)分别设于左阀腔（51 ) 和右阀腔（52) 内； 阀体 （5) 上在左阀腔（51 )和右阀腔（52) 的相应位置处均开设 有进料口、 吸料口和出料口； 左转阀 （4)和右转阀 （9)分别通过转轴（14)与位于阀 体（5)两端外侧的摇臂 （1 )相连； 所述左转阀 （4)和右转阀 （9) 为圆柱状， 其柱面 上开设有用来使进料口与吸料口连通或吸料口与出料口连通的通孔。
2、 根据权利要求 1所述的用于混凝土泵的分配阀， 其特征在于： 所述通孔两端的 口径不相等， 与吸料口连通一侧的口径大于与进料口或出料口连通一侧的口径。
3、 根据权利要求 1或 2所述的用于混凝土泵的分配阀， 其特征在于： 所述左阀腔 (51 )的左进料口 （16)和左吸料口 （17)通过左通孔（15)保持连通时， 右阀腔（52) 的右吸料口 （21 )和右出料口 （22)通过右通孔（19)保持连通； 所述左阀腔（51 ) 的 左吸料口 （17)和左出料口 （18)通过左通孔（15)保持连通时， 右阀腔（52) 的右进 料口 （20)和右吸料口 （21 )保持连通。
4、根据权利要求 1或 2所述的用于混凝土泵的分配阀，其特征在于：所述阀体（5) 内的左阀腔（51 )和右阀腔（52)通过隔套（8)或隔板分隔而成。
5、 根据权利要求 3所述的用于混凝土泵的分配阀， 其特征在于： 所述阀体（5) 内 的左阀腔（51 )和右阔腔 （52)通过隔套（8)或隔板分隔而成。
6、 根据权利要求 1或 2所述的用于混凝土泵的分配阀， 其特征在于： 所述左转阔
(4)和右转阀 （9) 与阀体（5) 之间设有外衬套（3)和内衬套 （7)。
7、 根据权利要求 3所述的用于混凝土泵的分配阀， 其特征在于： 所述左转阀 （4) 和右转阀 （9) 与阀体（5)之间设有外衬套（3)和内衬套（7)。
8、 根据权利要求 5所述的用于混凝土泵的分配阀， 其特征在于： 所述左转阀 （4) 和右转阀 （9) 与阀体（5) 之间设有外衬套（3)和内衬套（7)。
9、根据权利要求 1或 2所述的用于混凝土泵的分配阀，其特征在于：所述转轴（14) 固定于端盖（2)上的轴承座（11 )和轴承（12)上， 该转轴（14) 与端盖（2)之间设 有密封圈 （10)。
10、 根据权利要求 8所述的用于混凝土泵的分配阀， 其特征在于： 所述转轴 （14) 固定于端盖（2)上的轴承座（11 )和轴承（12)上， 该转轴（14) 与端盖（2)之间设 有密封圈 （10)。
PCT/CN2006/001706 2006-01-23 2006-07-17 Soupape de distribution pour une pompe de transport de béton WO2007082421A1 (fr)

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EP1978249A1 (en) 2008-10-08

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