WO2013033908A1 - 混凝土泵送设备及其截止换向装置 - Google Patents

混凝土泵送设备及其截止换向装置 Download PDF

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Publication number
WO2013033908A1
WO2013033908A1 PCT/CN2011/079496 CN2011079496W WO2013033908A1 WO 2013033908 A1 WO2013033908 A1 WO 2013033908A1 CN 2011079496 W CN2011079496 W CN 2011079496W WO 2013033908 A1 WO2013033908 A1 WO 2013033908A1
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WO
WIPO (PCT)
Prior art keywords
cut
reversing device
switching
switching unit
disposed
Prior art date
Application number
PCT/CN2011/079496
Other languages
English (en)
French (fr)
Inventor
刘昆吾
朱捷
Original Assignee
长沙中联重工科技发展股份有限公司
湖南中联重科专用车有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 长沙中联重工科技发展股份有限公司, 湖南中联重科专用车有限责任公司 filed Critical 长沙中联重工科技发展股份有限公司
Priority to PCT/CN2011/079496 priority Critical patent/WO2013033908A1/zh
Publication of WO2013033908A1 publication Critical patent/WO2013033908A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04Devices for both conveying and distributing
    • E04G21/0418Devices for both conveying and distributing with distribution hose

Definitions

  • the present invention relates to the field of concrete pumping, and more particularly to a concrete pumping apparatus and a cut-off reversing device thereof.
  • BACKGROUND OF THE INVENTION With the rapid development of the concrete pumping industry, more and more high-rise buildings, sea-crossing bridges, large tunnels, etc. have adopted the use of a tow pump or a vehicle-mounted pump, coupled with a fixed delivery pipeline for pumping and pouring construction. Therefore, higher requirements are also placed on the reliability and efficiency of the matching pumping equipment and piping. For concrete pumping equipment such as a tow pump or a car pump, a shut-off valve is usually required on the conveying line.
  • FIG. 1 shows a perspective view of a prior art shutoff valve. As shown in FIG. 1, the shut-off valve uses the shutter 100 to cut off the conveying pipe (not shown), and does not consider functions other than the cut-off.
  • the conveying pipe needs to be disassembled during cleaning, and multi-way reversing cannot be realized;
  • the joint 101 has a fixed type and has only a cut-off function, so that its versatility is greatly limited.
  • the shut-off valve interrupts the construction for a period of time during use, and requires a lot of manpower and material resources when disassembling the pipeline, and the efficiency is very low, and sometimes even affects the normal project schedule and the concrete pouring quality. Therefore, there is an urgent need in the art for a cut-off reversing device that satisfies the cut-off, cleaning, and reversing requirements, and has high adaptability and high efficiency, which is significant for concrete pumping construction of high-rise buildings and the like.
  • the present invention is directed to a concrete pumping device and a cut-off reversing device thereof, which are capable of solving the prior art shut-off valve device when it is necessary to perform the operations such as dismantling, changing, and cleaning the pipeline.
  • a cut-off reversing device for a concrete pumping apparatus comprising: a body having a first side wall and a first side opposite to the first side wall a second side wall, a first opening is disposed on the first side wall, and a second opening is disposed on the second side wall; and the switching unit is switched
  • the unit has a plurality of switching channels; the body further includes a cavity, the switching unit being removably placed within the cavity, wherein at least one port of the at least one switching channel is operatively exposed outside the body during switching of the switching unit.
  • the cut-off reversing device further includes a driving unit, and the driving unit is drivingly connected to the switching unit for driving the switching unit to perform switching.
  • the first end of the switching unit is provided with a first hinge portion
  • the body is provided with a second hinge portion
  • the first end of the drive unit is connected with the first hinge portion
  • the second end of the drive unit is connected with the second hinge portion .
  • the driving unit is two, and the two driving units are respectively disposed on the upper and lower sides of the cavity.
  • the first hinge portion includes two support plates, and the two support plates are disposed at the first end of the switching unit, and one end of each support plate is respectively provided with a hinge hole.
  • the drive unit is a cylinder or a cylinder.
  • the cavity further includes a bottom wall, at least a portion of the bottom wall being recessed toward the interior of the cavity to form a first space for avoiding the drive unit at least a portion of the bottom wall relative to the outside of the cavity.
  • the inside of the cavity is provided with a first guiding portion, and the switching unit slides along the first guiding portion.
  • the first guiding portion is disposed on an inner surface of the bottom wall.
  • the first guiding portion includes a rib, and the rib is provided with a guiding groove, and the switching unit includes a second guiding portion that cooperates with the guiding groove.
  • first side wall and the second side wall are disposed on two sides of the bottom wall, and the first side wall and the second side wall respectively formed by the concave bottom wall and the bottom wall are respectively formed in the cavity body.
  • the second guiding portion is a guide strip.
  • the cut-off reversing device further includes a first joint and a second joint, and the first joint or the second joint is detachably disposed on the first opening and the second opening, respectively. Further, the first ends of the first joint and the second joint are respectively provided with first flanges connected to the first opening and the second opening.
  • the second end of the first joint and the second joint is provided with a second flange, or a plug, or a first sealing groove disposed on an end surface of the second end, or disposed on a sidewall of the second end The second sealing groove.
  • the first opening and the second opening are in contact with the switching unit, and the elastic sealing unit is further provided.
  • the elastic sealing unit comprises an elastic cushioning element and a sealing element.
  • the elastic cushioning element is disposed on one side of the sealing element, and the sealing element The other side is in contact with the switching unit.
  • the elastic cushioning element and the sealing element are both annular, and the sealing element is made of an anti-wear material, the anti-wear material is cemented carbide, or cermet, or wear-resistant alloy steel, step by step,
  • the elastic cushioning element is a rubber spring step
  • the switching unit includes a frame, and a plurality of switching passages are disposed in the frame. Further, the inside of the cavity is provided with a first guiding portion, and one side of the frame is provided with a grid-shaped supporting portion. A second guide portion that cooperates with the first guide portion is provided on the support portion. Further, a slag opening is disposed on the first side wall and the second side wall.
  • the body includes a mounting portion, the mounting portion is disposed at a bottom of the body, and the mounting portion is provided with a mounting hole.
  • the cut-off reversing device further includes a cleaning ball or a cleaning piston for cleaning the concrete conveying pipe of the concrete pumping device, and exposing at least one port of one switching channel of the switching unit to the outside body when cleaning is required, Thereby the cleaning ball or the cleaning piston is placed in a switching channel that is exposed outside the body.
  • at least one of the switching channels is straight, and at least one of the switching channels is S-shaped.
  • FIG. 4 is a schematic view showing the structure of the switching unit;
  • FIG. 6 is a schematic view showing the structure of the body and its elastic sealing unit;
  • FIG. 7A schematically shows a first embodiment of the joint;
  • FIG. 7B schematically shows the joint of the joint;
  • Fig. 7C schematically shows a third embodiment of the joint;
  • Fig. 7D schematically shows a fourth embodiment of the joint;
  • Fig. 8 schematically shows the cut-off commutation at the first station Apparatus;
  • Figure 9 is a schematic illustration of the cut-off reversing device at the second station;
  • Figure 10 is a schematic illustration of the cut-off reversing device at the third station.
  • the cut-off reversing device of the concrete pumping apparatus of the present invention includes: a body 1 and a switching unit 2.
  • FIG. 3 shows a body 1 having a first side wall 3 and a second side wall 4 opposite to the first side wall, and a first opening 5 is provided on the first side wall 3,
  • the second side wall 4 is provided with a second opening 6.
  • the number of the first opening 5 and the second opening 6 is at least two.
  • the body 1 further comprises a cavity 9 in which the switching unit 2 is releasably placed, during which the at least one port 8 of the at least one switching channel 7 is operatively exposed outside the body 1.
  • the body 1 is square; preferably, in order to realize the installation of the cut-off reversing device, the body 1 further comprises a mounting portion 33, the mounting portion 33 is disposed at the bottom of the body 1, and the mounting portion 33 is provided with a mounting hole 34, At this time, the cut-off reversing device can be fixed to the ground through the mounting hole 34 using the expansion bolt to ensure that the cut-off reversing device does not shift or deflect when in use.
  • the cut-off reversing device of the present invention can be connected at the same time Multiple input pipes and multiple output pipes are connected, and the effect of real-time switching between the two pumps and the two pipes can be realized through the switching unit, thereby ensuring the continuity of the pumping, and eliminating the need to disassemble the pipes, saving manpower and material resources. , improve construction efficiency.
  • the cut-off reversing device further comprises a driving unit 10, which is drivingly connected to the switching unit 2, preferably the first end of the driving unit 10 is provided with a first hinge portion 11, which is arranged on the body 1.
  • the first hinge portion 11 includes two support plates 13 disposed at the first end of the switching unit 2, and each of the support plates 13 is respectively provided with a hinge hole 14 at the two ends thereof.
  • the support plate 13 may be integrally formed with the switching unit 2, or may be fixed to the switching unit 2 by welding or the like.
  • the drive unit 10 is a cylinder or cylinder.
  • the driving unit 10 is two, and the two driving units 10 are respectively disposed on the upper and lower sides of the cavity 9, so that the switching unit 2 can be uniformly stressed during the switching process, so as to improve the reliability of the cut-off reversing device. Sex, and can prevent the phenomenon of seizure and wear caused by uneven force.
  • the cavity 9 further includes a bottom wall 15 at least a portion of the bottom wall 15 recessed toward the inside of the cavity 9 to form a portion for avoiding the drive unit 10 on the outer side of at least a portion of the bottom wall 15 with respect to the cavity 9.
  • the drive unit 10 is not affected by the installation, thereby providing convenience for installation.
  • the first side wall and the second side wall are disposed on both sides of the bottom wall, and since at least a part of the bottom wall 15 is recessed toward the inside of the cavity 9, the concave bottom wall is formed inside the cavity 9.
  • the second space 32 defined by the first side wall 3 and the second side wall 4 adjacent to the bottom wall respectively can enter or temporarily exist in the second space 32 during the switching of the switching unit 2 In case of clearing or discharging.
  • a first guiding portion is provided inside the cavity 9, and the switching unit 2 is along the first guiding portion. slide.
  • the first guiding portion is provided on an inner surface of the bottom wall.
  • the first guiding portion is disposed on an inner surface of at least a portion of the bottom wall 15 of the cavity 9.
  • the first guiding portion includes a rib 17 and the rib 17 is provided with a guiding groove 18.
  • the switching unit 2 further includes a second guiding portion 20 that cooperates with the guiding groove 18.
  • the second guiding portion 20 is a guiding strip which is disposed at the bottom of the switching unit 2 and is in sliding contact with the guiding groove 18, and adopts a guiding strip. It is advantageous to eliminate the concrete falling off on the guiding groove 18 during the switching, and at the same time, the adverse effect of the falling concrete on the second guiding portion 20 can be avoided, so that the switching unit 2 can always slide normally in the cavity 9, thereby improving The reliability of the cut-off device is cut off.
  • the sliding method described above is stable, reliable, and not easily damaged.
  • a proper amount of lubricating oil may be added at a contact surface of the first guiding portion and the second guiding portion to make the relative of the two The slide stays smooth.
  • the sliding manner between the switching unit and the cavity is not limited to the above preferred manner, and the present invention may also adopt any other sliding manner.
  • the first guiding portion and the second guiding portion may also respectively By adopting the combination of the pulley and the slide rail, the use of the pulley will make the resistance smaller, the required thrust is smaller, and the energy consumption can be saved; or the first guide portion and the second guide portion can also adopt the double guide rail manner, respectively. Since the first guide portion and the second guide portion both have two guide rails, the sliding is more stable.
  • the cut-off reversing device further includes a first joint 21 and a second joint 22, and the first joint 21 or the second joint 22 are detachably disposed on the first opening 5 and the second opening 6, respectively.
  • first joint 21 and the second joint 22 are detachably disposed on the first opening 5 and the second opening 6, respectively.
  • the first ends of the first joint 21 and the second joint 22 are respectively provided with the first opening 5 and the first
  • the first flange 23, to which the two openings 6 are connected, is fixed to the body by bolts for easy disassembly and replacement.
  • the present invention provides various forms of the first joint 21 and the second joint 22, for example, except that the first end of the first joint 21 and the second joint 22 are provided at the first end.
  • the second sealing groove 24, or the second flange 27, or the plug 26, thus, it is convenient to realize the connection with different concrete conveying pipes by replacing the first joint and the second joint of different forms.
  • the versatility of the cut-off reversing device is enhanced.
  • first joint and the second joint are not limited to the forms listed in the above embodiments. In practice, during the process of switching the switching unit 2 from one station to another, a certain amount of concrete is leaked out. Therefore, the switching process of the first opening and the second opening and the switching unit needs to be sealed.
  • the method adopted in the present invention is that an elastic sealing unit is disposed on a side where the first opening and the second opening are in contact with the switching unit, and since the elastic sealing unit has a certain elasticity, it can always be in the process of switching The surfaces of the switching unit are in contact with each other to function as a seal. Further, the leaked concrete contains sand and the like, which causes great wear to the elastic sealing unit, so that the elastic sealing unit quickly fails, so that the elastic sealing unit needs to be frequently replaced.
  • the present invention provides an elastic sealing unit comprising an elastic cushioning member 28 and a sealing member 29, the elastic cushioning member 28 being disposed on one side of the sealing member 29, and the other side of the sealing member 29 being switched The unit 2 is in contact with each other.
  • the elastic cushioning member 28 and the sealing member 29 are both annular.
  • the sealing member 29 is made of an anti-wear material, which may be a wear-resistant metal material (such as a hard An alloy, or a wear resistant alloy steel) or a wear resistant non-metallic material (such as a cermet); preferably, the elastic cushioning member 28 is a rubber spring.
  • the elastic force of the elastic cushioning member 28 is utilized to keep the sealing member 29 in constant contact with the surface of the switching unit 2, and at the same time, the anti-wear property of the sealing member 29 is utilized, so that it is not necessary to replace it frequently. , thus improving the reliability and work efficiency.
  • the present invention further provides a slag opening 19 on the first side wall and the second side wall.
  • the slag opening 19 is disposed below the first opening and the second opening for the discharge of concrete.
  • the leaked concrete during the switching process may also be partially stored in the second space 32 and further discharged through the tap hole 19.
  • the switching unit 2 comprises a frame 30 in which the plurality of switching channels 7 are arranged. Since the switching unit 2 is in the form of a frame, material is saved, weight and cost are reduced.
  • a mesh-shaped support portion 31 is provided on one side of the frame 30, and the second guide portion 20 is engaged with the first guide portion on the support portion 31, and the grid-shaped support portion can be used for The second guide 20 provides sufficient support, which reduces weight and reduces cost.
  • the cut-off reversing device of the present invention can also be used for cleaning a concrete conveying pipe.
  • the cut-off reversing device further comprises a cleaning ball or a cleaning piston (not shown) for cleaning the concrete conveying pipe of the concrete pumping device.
  • the invention can conveniently and quickly add the cleaning ball or the cleaning piston to the switching passage of the cut-off reversing device, so as to perform the cleaning work, and no need to disassemble the pipeline, thereby saving manpower and material resources and improving Construction efficiency.
  • the cut-off reversing device can have multiple stations to achieve different cut-off and commutation functions.
  • the cut-off reversing device has three stations. Next, the operation of the cut-off reversing device having three stations will be described with reference to FIGS.
  • FIG. 8 shows the first switching in the switching unit. When the channel A is connected, the switching unit is in the first station, that is, the normal pumping state, and the concrete is conveyed through the first switching channel A;
  • FIG. 9 shows the state when the switching unit is in the second station. When the driving unit pushes the switching unit to the left to the middle position, the two switching channels are not connected, and the state is the off state at this time;
  • FIG. 10 shows the state when the switching unit is in the third station, when the driving unit pushes the switching unit When the end of the stroke is reached, the second switching passage B is connected, and at this time is the reversing state (for example, switching the main pump to the standby pump), the concrete is conveyed through the second switching passage B; if the pipeline needs to be cleaned, as shown in FIG.
  • the driving unit pushes the switching unit to the end of the stroke
  • the cleaning ball or the cleaning piston is placed in the first switching channel A on the left side, and then the switching unit is pushed to the right to make the switching unit work.
  • the present invention also provides a concrete pumping device, and the cut-off reversing device according to each of the above embodiments is disposed on the concrete conveying pipe of the concrete pumping device. Due to the concrete pump The cut-off reversing device is used in the sending device, so the effect of real-time switching of the double pump/dual pipe can be achieved, thereby ensuring the continuity of the pumping, and eliminating the need to disassemble the pipeline, thereby saving manpower and material resources and improving Construction efficiency.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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

Abstract

一种混凝土泵送设备的截止换向装置,包括:本体(1),其具有第一侧壁(3)、与第一侧壁(3)相对设置的第二侧壁(4),在第一侧壁(3)上设置有第一开口(5),在第二侧壁(4)设置有第二开口(6);和切换单元(2),切换单元(2)具有多个切换通道(7)。本体(1)还包括腔体(9),切换单元(2)可抽出地置于腔体(9)内,在切换单元(2)切换的过程中,至少一个切换通道(7)的至少一个端口(8)可操作地暴露于本体(1)之外。设置有该截止换向装置的混凝土泵送设备可通过切换单元(2)实现双泵/双管路实时切换的效果,从而保证了泵送的连续性,且不再需要拆装管路,提高了施工效率。

Description

混凝土泵送设备及其截止换向装置 技术领域 本发明涉及混凝土泵送领域, 更具体地, 涉及一种混凝土泵送设备及其截止换向 装置。 背景技术 随着混凝土泵送行业的飞速发展, 越来越多的高层建筑、 跨海大桥、 大型隧道等 采用了拖泵或车载泵, 再加上配套固定输送管路的方式进行泵送浇注施工, 于是对于 配套泵送设备及管路的可靠性和效率也提出了更高的要求。 对于拖泵或车载泵等混凝土泵送设备来说, 其输送管路上通常需要设置一个截止 阀, 当需要对输送管路进行拆管、 换管及清洗管路等操作时, 需要先利用截止阀将输 送管路截止, 然后再对输送管路进行拆装。 当存在多条输送管路需要切换时, 也需要 先利用截止阀将主输送管路截止, 再通过拆装弯管来切换到旁路的输送管路。 图 1示 出了现有技术中的截止阀的立体图。 如图 1所示, 该截止阀采用闸板 100来切断输送 管路(未示出), 并未考虑除截止以外的功能, 因此, 清洗时需拆卸输送管路, 不能实 现多路换向; 另外, 其接头 101采用固定型式, 仅仅具有截止功能, 使得其通用性受 到很大限制。 进一步, 现有技术中的截止阀在使用过程中, 会使施工中断一段时间, 并且拆装管道时需要耗费大量人力和物力, 效率很低, 有时甚至会影响到正常工程进 度和混凝土浇注质量。 因此, 本领域急需一种既满足截止、 清洗、 换向要求, 又具有高适应性和高效率 的截止换向装置, 这对于高层建筑等的混凝土泵送施工是很有意义的。 发明内容 本发明旨在提供一种混凝土泵送设备及其截止换向装置, 以解决现有技术的截止 阀装置当需要对输送管路进行拆管、 换管及清洗管路等操作时, 不能实现换向且需要 拆管的问题。 为解决上述技术问题, 根据本发明的一个方面, 提供了一种混凝土泵送设备的截 止换向装置, 包括; 本体, 本体具有第一侧壁、 和与所述第一侧壁相对设置的第二侧 壁, 在第一侧壁上设置有第一开口, 在第二侧壁设置有第二开口; 和切换单元, 切换 单元具有多个切换通道; 本体还包括腔体, 切换单元可抽出地置于腔体内, 在切换单 元切换的过程中, 至少一个切换通道的至少一个端口可操作地暴露于本体之外。 进一步地, 截止换向装置还包括驱动单元, 驱动单元与切换单元驱动连接, 用于 驱动切换单元进行切换。 进一步地, 切换单元的第一端设置有第一铰接部, 本体上设置有第二铰接部, 驱 动单元的第一端与第一铰接部连接, 驱动单元的第二端与第二铰接部连接。 进一步地, 驱动单元为两个, 两个驱动单元分别设置在腔体的上下两侧。 进一步地, 第一铰接部包括两个支撑板, 两个支撑板设置在切换单元的第一端, 每个支撑板的两端分别设置有一个铰接孔。 进一步地, 驱动单元是油缸或气缸。 进一步地, 腔体还包括底壁, 至少一部分底壁向腔体的内部凹入, 以在至少一部 分底壁相对于所述腔体的外侧形成用于避让驱动单元的第一空间。 进一步地, 腔体的内部设置有第一导向部, 切换单元沿第一导向部滑动。 进一步地, 第一导向部设置在底壁的内表面上。 进一步地, 第一导向部包括凸条, 在凸条上设置有导向槽, 切换单元包括与导向 槽配合的第二导向部。 进一步地, 第一侧壁和第二侧壁设置在底壁的两侧, 在腔体的内部形成由凹入的 底壁分别同与底壁相邻的第一侧壁、 第二侧壁所共同限定的第二空间。 进一步地, 第二导向部是导向条。 进一步地, 截止换向装置还包括第一接头和第二接头, 第一接头或第二接头分别 可拆卸地设置在第一开口和第二开口上。 进一步地, 第一接头和第二接头的第一端分别设置有与第一开口和第二开口连接 的第一法兰。 进一步地, 第一接头和第二接头的第二端设置有第二法兰、 或堵头、 或设置在该 第二端的端面上的第一密封槽、 或设置在该第二端的侧壁上的第二密封槽。 步地, 第一开口和第二开口与切换单元相接触的一侧设置有弹性密封单元 进一步地, 弹性密封单元包括弹性缓冲元件和密封元件, 弹性缓冲元件设置在密 封元件的一侧, 密封元件的另一侧与切换单元相接触。 步地, 弹性缓冲元件和密封元件都是环状的,密封元件是由抗磨材料制成的- 步地, 抗磨材料是硬质合金、 或金属陶瓷、 或耐磨合金钢, 步地, 弹性缓冲元件是橡胶弹簧 步地, 切换单元包括框架, 在框架内设置有多个切换通道 进一步地, 腔体的内部设置有第一导向部, 框架的一侧设置有网格状的支撑部, 在支撑部上设置有与第一导向部配合的第二导向部。 进一步地, 第一侧壁和第二侧壁上设置有出渣口。 进一步地, 本体包括安装部, 安装部设置在本体的底部, 安装部上设置有安装孔。 进一步地, 截止换向装置还包括用于清洗混凝土泵送设备的混凝土输送管路的清 洗球或清洗活塞, 在需要清洗时, 将切换单元的一个切换通道的至少一个端口暴露于 本体之外, 从而将清洗球或清洗活塞置于暴露于本体之外的切换通道中。 进一步地, 至少其中一个切换通道是直的, 至少其中一个切换通道是 S形的。 根据本发明的一个方面, 提供了一种混凝土泵送设备, 在混凝土泵送设备的混凝 土输送管路上设置有上述的截止换向装置。 本发明中的混凝土泵送设备及其截止换向装置同时连接多个输入管道和多个输出 管道, 并可通过其切换单元实现双泵 /双管路实时切换的效果, 从而保证了泵送的连续 性, 且不再需要拆装管路, 因而节约了人力物力, 提高了施工效率。 附图说明 构成本申请的一部分的附图用来提供对本发明的进一步理解, 本发明的示意性实 施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图中: 图 1示意性示出了现有技术中的截止阀的立体图; 图 2示意性示出了本发明中的截止换向装置的立体图; 图 3示意性示出了本体的结构示意图; 图 4示意性示出了切换单元的结构示意图; 图 5示意性示出了另一视角的切换单元的结构示意图; 图 6示意性示出了本体及其弹性密封单元的结构示意图; 图 7A示意性示出了接头的第一实施例; 图 7B示意性示出了接头的第二实施例; 图 7C示意性示出了接头的第三实施例; 图 7D示意性示出了接头的第四实施例; 图 8示意性示出了处于第一工位时的截止换向装置; 图 9示意性示出了处于第二工位时的截止换向装置; 以及 图 10示意性示出了处于第三工位时的截止换向装置。 具体实施方式 以下结合附图对本发明的实施例进行详细说明, 但是本发明可以由权利要求限定 和覆盖的多种不同方式实施。 如图 2-6所示, 本发明中的混凝土泵送设备的截止换向装置包括; 本体 1和切换 单元 2。 其中, 图 3示出了本体 1, 本体 1具有第一侧壁 3、 和与所述第一侧壁相对设 置的第二侧壁 4,在第一侧壁 3上设置有第一开口 5,在第二侧壁 4设置有第二开口 6, 优选地, 所述第一开口 5和第二开口 6的个数均为至少两个。 图 4-5示出了切换单元, 切换单元 2具有多个切换通道 7, 优选地, 至少其中一个切换通道 7是直的, 至少其 中一个切换通道 7是 S形的。 本体 1还包括腔体 9, 切换单元 2可抽出地置于腔体 9 内, 在切换单元 2切换的过程中, 至少一个切换通道 7的至少一个端口 8可操作地暴 露于本体 1之外。 优选地, 本体 1是方形的; 优选地, 为了实现截止换向装置的安装, 本体 1还包括安装部 33, 安装部 33设置在本体 1的底部, 安装部 33上设置有安装孔 34, 使用时, 可以使用膨胀螺栓通过安装孔 34将截止换向装置固定在地面上, 以保证 截止换向装置在使用时不发生位移或偏转。 因此, 本发明中的截止换向装置可同时连 接多个输入管道和多个输出管道, 并可通过切换单元实现双泵 /双管路实时切换的效 果, 从而保证了泵送的连续性, 且不再需要拆装管路, 节约了人力物力, 提高了施工 效率。 为了实现对切换单元 2的切换, 该截止换向装置还包括驱动单元 10, 其与切换单 元 2驱动连接, 优选地, 驱动单元 10的第一端设置有第一铰接部 11, 本体 1上设置 有第二铰接部 12, 驱动单元 10的第一端与第一铰接部 11连接, 驱动单元 10的第二 端与第二铰接部 12连接。 优选地, 第一铰接部 11包括两个支撑板 13, 该两个支撑板 13设置在切换单元 2的第一端, 每个支撑板 13的两端分别设置有一个铰接孔 14, 该 两个支撑板 13可与切换单元 2—体成型, 也可以是通过焊接等方式固定在切换单元 2 上。 优选地, 驱动单元 10是油缸或气缸。 优选地, 驱动单元 10为两个, 两个驱动单 元 10分别设置在腔体 9的上下两侧, 因此,可以使切换单元 2在切换的过程中受力均 匀, 以提高截止换向装置的可靠性, 并可防止由于受力不匀引起的卡死现象及磨损现 象。 优选地, 腔体 9还包括底壁 15, 至少一部分底壁 15向腔体 9的内部凹入, 以在 至少一部分底壁 15的相对于腔体 9的外侧形成用于避让驱动单元 10的第一空间 16, 通过该第一空间 16, 驱动单元 10被收置起来, 因此, 当安装截止换向装置的时候, 由于驱动单元 10处于该第一空间 16内而不是突出于本体之外,以使驱动单元 10不会 对安装造成影响, 从而为安装提供了方便。 进一步, 第一侧壁和第二侧壁设置在底壁 的两侧, 由于至少一部分底壁 15向腔体 9的内部凹入, 因此, 在腔体 9的内部形成由 该凹入的底壁分别同与底壁相邻的第一侧壁 3、 第二侧壁 4共同限定的第二空间 32, 在切换单元 2切换的过程中泄露出来的混凝土可以进入或暂存在该第二空间 32内,以 备清除或排出。 由于切换单元 2可以相对于腔体 9发生运动, 因此, 为了便于切换单元 2的滑动 并对该滑动进行导向, 在腔体 9的内部设置有第一导向部, 切换单元 2沿第一导向部 滑动。 优选地, 第一导向部设置在底壁的内表面上。 第一导向部设置在腔体 9的至少 一部分底壁 15的内表面。 优选地, 第一导向部包括凸条 17, 在凸条 17上设置有导向 槽 18。 切换单元 2还包括与导向槽 18配合的第二导向部 20, 优选地, 第二导向部 20 是导向条, 其设置在切换单元 2的底部, 与导向槽 18滑动接触, 采用导向条的方式利 于排除切换时脱落在导向槽 18上的混凝土, 同时, 也能避免这些脱落的混凝土对第二 导向部 20产生的不利影响, 从而使得切换单元 2始终能在腔体 9内正常滑动, 从而提 高了截止换向装置的可靠性。 采用上述的滑动方式具有稳定可靠、 不易损坏的特点。 特别地, 可在第一导向部与第二导向部的接触面处适量添加润滑油, 以使两者的相对 滑动保持顺畅。 需要指出的是, 切换单元与腔体之间的滑动方式不局限于上述优选地 的方式, 本发明还可采用其它任意的滑动方式, 例如, 第一导向部和第二导向部还还 可分别采用滑轮和滑轨相配合的方式, 采用滑轮会使阻力更小, 需要的推力也更小, 可以节约能耗; 或者第一导向部和第二导向部还还可分别采用双导轨的方式, 由于第 一导向部和第二导向部都具有两个导轨, 因此滑动更为稳定。 优选地, 截止换向装置还包括第一接头 21和第二接头 22, 第一接头 21或第二接 头 22分别可拆卸地设置在第一开口 5和第二开口 6上。 为了实现方便地将第一接头 21、 第二接头 22安装在第一开口 5、 第二开口 6上, 第一接头 21和第二接头 22的第 一端分别设置有与第一开口 5和第二开口 6连接的第一法兰 23, 第一法兰 23通过螺 栓固定到本体上, 以便于拆卸和更换。 如图 7A, 7B, 7C, 7D所示, 本发明提供了多 种形式的第一接头 21和第二接头 22, 例如, 除了在第一接头 21和第二接头 22的第 一端处设置第一法兰 23夕卜,还可在第一接头 21和第二接头 22的第二端设置有设置在 该第二端的端面上的第一密封槽 25、或设置在该第二端的侧壁上的第二密封槽 24、或 第二法兰 27、或堵头 26, 因而, 可以方便地通过换用不同形式的第一接头和第二接头 实现与不同的混凝土输送管路之间的连接, 从而增强了截止换向装置的通用性。 特别 地,图 7A中的第一接头或第二接头可以是混凝土泵送领域中的 B型接头或低压接头, 图 7B中的第一接头或第二接头可以是混凝土泵送领域中的 A型接头或中压接头。 当 然, 第一接头和第二接头并不局限于上述实施例中所列举的形式。 在实践中, 切换单元 2从一个工位切换到另一个工位的过程中, 会有一定量的混 凝土泄露出来, 因此, 需要对第一开口与第二开口与切换单元的切换过程进行密封处 理, 本发明中采用的方法是在第一开口和第二开口与切换单元相接触的一侧设置有弹 性密封单元, 由于该弹性密封单元具有一定的弹性, 因此, 可在切换的过程中, 始终 与切换单元的表面相接触, 从而起到密封的作用。 进一步, 泄露出的混凝土中含有砂 石等成分, 会对弹性密封单元造成很大的磨损, 从而使弹性密封单元很快失效, 以致 需要频繁地更换弹性密封单元。 为此, 本发明提供了一种弹性密封单元, 该单性密封 单元包括弹性缓冲元件 28和密封元件 29, 弹性缓冲元件 28设置在密封元件 29的一 侧, 密封元件 29的另一侧与切换单元 2相接触, 优选地, 弹性缓冲元件 28和密封元 件 29都是环状的, 优选地, 密封元件 29是由抗磨材料制成的, 该抗磨材料可以是耐 磨金属材料(如硬质合金、或耐磨合金钢)或耐磨非金属材料(如金属陶瓷); 优选地, 弹性缓冲元件 28是橡胶弹簧。通过这种形式的弹性密封单元, 既利用了弹性缓冲元件 28的弹性力使密封元件 29始终与切换单元 2的表面保持接触, 同时, 又利用了密封 元件 29的抗磨性能, 使得不必经常更换, 从而起到了提高可靠性和工作效率的目的。 进一步, 为了避免泄露的混凝土留在腔体与切换单元之间, 从而导致切换单元卡 死在腔体内, 本发明还在第一侧壁和第二侧壁上设置有出渣口 19, 因此, 在切换的过 程中, 当从第一开口或第二开口中有混凝土泄露时, 泄露出的混凝土会通过出渣口 19 而排出本体, 另外, 操作人员也可以通过该出渣口 19清除泄露出的混凝土, 以保证切 换单元的正常工作。优选地, 出渣口 19设置在第一开口和第二开口的下方, 以便混凝 土的排出。 此外, 切换过程中泄露的混凝土, 还可以部分在暂存在第二空间 32内, 并 进一步通过出渣口 19排出。 优选地, 切换单元 2包括框架 30, 在框架 30内设置有上述多个切换通道 7, 由于 切换单元 2采用框架的形式, 因此, 既节省了材料、 又降低了重量和成本。 优选地, 在框架 30的一侧设置有网格状的支撑部 31, 在支撑部 31上设置有与第一导向部配合 的上述第二导向部 20, 采用网格状的支撑部既能为第二导向部 20提供足够的支撑, 又减轻了重量、 降低了成本。 本发明中的截止换向装置还可用于清洗混凝土输送管路, 为此, 截止换向装置还 包括用于清洗混凝土泵送设备的混凝土输送管的清洗球或清洗活塞(未示出),在需要 清洗混凝土输送管路时, 可将切换单元的一个切换通道的至少一个端口暴露于本体之 夕卜, 从而将清洗球或清洗活塞置于暴露于本体之外的切换通道中, 以便进行清洗作业, 通过上述结构, 本发明可以方便、 快速将清洗球或清洗活塞添加到截止换向装置的切 换通道中去, 以进行清洗工作, 不再需要拆装管路, 从而节约了人力物力, 并提高了 施工效率。 本发明中截止换向装置可具有多个工位, 以实现不同的截止及换向功能。优选地, 截止换向装置具有三个工位, 下面, 结合图 8, 9, 10来说明具有三个工位的截止换向 装置的工作过程: 图 8示出了切换单元中的第一切换通道 A连通时的示意图, 此时, 切换单元处于第一工位, 即正常泵送状态, 混凝土经过第一切换通道 A输送; 图 9示 出了切换单元处于第二工位时的状态, 当驱动单元将切换单元向左推到中位时, 两个 切换通道均不连通, 此时为截止状态; 图 10示出了切换单元处于第三工位时的状态, 当驱动单元将切换单元推到行程的末端时,第二切换通道 B连通,此时为换向状态(如 将主泵切换到备用泵), 混凝土经过第二切换通道 B输送; 若需要清洗管路时, 如图 10所示, 可在驱动单元将切换单元推到行程的末端时, 将清洗球或清洗活塞放入左边 的第一切换通道 A内, 然后将切换单元向右推动, 使切换单元工作在图 8所示的工作 状态下, 即可对管路进行清洗。 在上述实施例的基础上, 本发明还提供一种混凝土泵送设备, 在该混凝土泵送设 备的混凝土输送管路上设置有上述各实施例所述的截止换向装置。 由于在该混凝土泵 送设备中使用了截止换向装置, 因此, 可达到双泵 /双管路实时切换的效果, 从而保证 了泵送的连续性, 且不再需要拆装管路, 因而节约了人力物力, 提高了施工效率。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种混凝土泵送设备的截止换向装置, 其特征在于, 包括;
本体, 所述本体具有第一侧壁、 和与所述第一侧壁相对设置的第二侧壁, 在所述第一侧壁上设置有第一开口, 在所述第二侧壁设置有第二开口; 和 切换单元, 所述切换单元具有多个切换通道;
所述本体还包括腔体, 所述切换单元可抽出地置于所述腔体内, 在所述切 换单元切换的过程中, 至少一个所述切换通道的至少一个端口可操作地暴露于 所述本体之外。
2. 根据权利要求 1所述的截止换向装置, 其特征在于, 所述截止换向装置还包括 驱动单元, 所述驱动单元与所述切换单元驱动连接, 用于驱动所述切换单元进 行切换。
3. 根据权利要求 2所述的截止换向装置, 其特征在于, 所述切换单元的第一端设 置有第一铰接部, 所述本体上设置有第二铰接部, 所述驱动单元的第一端与所 述第一铰接部连接, 所述驱动单元的第二端与所述第二铰接部连接。
4. 根据权利要求 3所述的截止换向装置, 其特征在于, 所述驱动单元为两个, 所 述两个驱动单元分别设置在所述腔体的上下两侧。
5. 根据权利要求 4所述的截止换向装置, 其特征在于, 所述第一铰接部包括两个 支撑板, 所述两个支撑板设置在所述切换单元的所述第一端, 每个所述支撑板 的两端分别设置有一个铰接孔。
6. 根据权利要求 2-5中任一项所述的截止换向装置, 其特征在于, 所述驱动单元 是油缸或气缸。
7. 根据权利要求 2-5中任一项所述的截止换向装置, 其特征在于, 所述腔体还包 括底壁, 至少一部分所述底壁向所述腔体的内部凹入, 以在所述至少一部分底 壁的相对于所述腔体的外侧形成用于避让所述驱动单元的第一空间。
8. 根据权利要求 7所述的截止换向装置, 其特征在于, 所述腔体的内部设置有第 一导向部, 所述切换单元沿所述第一导向部滑动。
9. 根据权利要求 8所述的截止换向装置, 其特征在于, 所述第一导向部设置在所 述底壁的内表面上。
10. 根据权利要求 8所述的截止换向装置,其特征在于,所述第一导向部包括凸条, 在所述凸条上设置有导向槽, 所述切换单元包括与所述导向槽配合的第二导向 部。
11. 根据权利要求 10所述的截止换向装置,其特征在于,所述第二导向部是导向条。
12. 根据权利要求 7所述的截止换向装置, 其特征在于, 所述第一侧壁和第二侧壁 设置在所述底壁的两侧, 在所述腔体的内部形成由凹入的所述底壁分别同与所 述底壁相邻的所述第一侧壁、 第二侧壁所共同限定的第二空间。
13. 根据权利要求 1所述的截止换向装置, 其特征在于, 所述截止换向装置还包括 第一接头和第二接头, 所述第一接头或第二接头分别可拆卸地设置在所述第一 开口和第二开口上。
14. 根据权利要求 13所述的截止换向装置,其特征在于,所述第一接头和第二接头 的第一端分别设置有与所述第一开口和第二开口连接的第一法兰。
15. 根据权利要求 14所述的截止换向装置,其特征在于,所述第一接头和第二接头 的第二端设置有第二法兰、或堵头、或设置在该第二端的端面上的第一密封槽、 或设置在该第二端的侧壁上的第二密封槽。
16. 根据权利要求 1所述的截止换向装置, 其特征在于, 所述第一开口和第二开口 与所述切换单元相接触的一侧设置有弹性密封单元。
17. 根据权利要求 16所述的截止换向装置,其特征在于,所述弹性密封单元包括弹 性缓冲元件和密封元件, 所述弹性缓冲元件设置在所述密封元件的一侧, 所述 密封元件的另一侧与所述切换单元相接触。
18. 根据权利要求 17所述的截止换向装置,其特征在于,所述弹性缓冲元件和密封 元件都是环状的, 所述密封元件是由抗磨材料制成的。
19. 根据权利要求 18所述的截止换向装置,其特征在于,所述抗磨材料是硬质合金、 或金属陶瓷、 或耐磨合金钢。
20. 根据权利要求 17-19中任一项所述的截止换向装置, 其特征在于, 所述弹性缓 冲元件是橡胶弹簧。
21. 根据权利要求 1所述的截止换向装置, 其特征在于, 所述切换单元包括框架, 在所述框架内设置有所述多个切换通道。
22. 根据权利要求 21所述的截止换向装置,其特征在于,所述腔体的内部设置有第 一导向部, 所述框架的一侧设置有网格状的支撑部, 在所述支撑部上设置有与 所述第一导向部配合的第二导向部。
23. 根据权利要求 1所述的截止换向装置, 其特征在于, 所述第一侧壁和第二侧壁 上设置有出渣口。
24. 根据权利要求 1所述的截止换向装置, 其特征在于, 所述本体包括安装部, 所 述安装部设置在所述本体的底部, 所述安装部上设置有安装孔。
25. 根据权利要求 1所述的截止换向装置, 其特征在于, 所述截止换向装置还包括 用于清洗所述混凝土泵送设备的混凝土输送管路的清洗球或清洗活塞, 在需要 清洗时, 将所述切换单元的一个所述切换通道的至少一个端口暴露于所述本体 之外, 从而将所述清洗球或清洗活塞置于所述暴露于所述本体之外的切换通道 中。
26. 根据权利要求 1-4中任一项所述的截止换向装置, 其特征在于, 至少其中一个 所述切换通道是直的, 至少其中一个所述切换通道是 S形的。
27. 一种混凝土泵送设备, 其特征在于, 在所述混凝土泵送设备的混凝土输送管路 上设置有权利要求 1-26中任一项所述的截止换向装置。
PCT/CN2011/079496 2011-09-09 2011-09-09 混凝土泵送设备及其截止换向装置 WO2013033908A1 (zh)

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