WO2011003271A1 - 压滤机滤板分组振打装置 - Google Patents

压滤机滤板分组振打装置 Download PDF

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Publication number
WO2011003271A1
WO2011003271A1 PCT/CN2010/000819 CN2010000819W WO2011003271A1 WO 2011003271 A1 WO2011003271 A1 WO 2011003271A1 CN 2010000819 W CN2010000819 W CN 2010000819W WO 2011003271 A1 WO2011003271 A1 WO 2011003271A1
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WO
WIPO (PCT)
Prior art keywords
filter
sleeve
moving frame
vibration
gas source
Prior art date
Application number
PCT/CN2010/000819
Other languages
English (en)
French (fr)
Inventor
姜桂廷
柳宝昌
Original Assignee
Jiang Guiting
Liu Baochang
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 Jiang Guiting, Liu Baochang filed Critical Jiang Guiting
Priority to EP10796648.3A priority Critical patent/EP2452736B1/en
Priority to RU2012103940/05A priority patent/RU2526386C2/ru
Publication of WO2011003271A1 publication Critical patent/WO2011003271A1/zh
Priority to US13/345,668 priority patent/US8206582B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/164—Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32—Removal of the filter cakes
    • B01D25/322—Removal of the filter cakes specially for chamber filter presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/172—Plate spreading means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32—Removal of the filter cakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32—Removal of the filter cakes
    • B01D25/34—Removal of the filter cakes by moving, e.g. rotating, the filter elements
    • B01D25/346—Removal of the filter cakes by moving, e.g. rotating, the filter elements by vibration

Definitions

  • the invention belongs to the technical field of a fluctuating device of a filter press, and in particular to a grouping rapping device for a filter press filter plate, which is a rapping device for separating and removing a filter cake by a filter plate of a filter press.
  • the filter press is the main filtration equipment in the solid-liquid separation industry. After the material is filtered, the filter cake is left in the filter chamber of the filter plate.
  • the automatic filter device of the filter press pulls the filter plate off and removes the filter cake to achieve the purpose of filtration. .
  • the filter plates are separated by a plurality of filter plates to remove the filter cake to improve the production efficiency.
  • the shortcomings are that, due to the complex composition of different filter cakes in the filtration industry, some contain tiny particles, and some filter cakes are also sticky, so that the filter cake cannot fall automatically after the filter plates are grouped apart, if artificially eradicated
  • the work efficiency is low, the cleaning speed is slow, and the labor intensity is increased, and the filter cloth is easily damaged, the production cost is increased, and the filtration efficiency is also affected, so that the production is affected, thereby causing the filter plate to be unpacked and unloading the filter cake.
  • An object of the present invention is to provide a filter press filter group grouping rapping device in view of the above problems.
  • a filter press filter group group rapping device comprising a fixed bracket and a moving frame, wherein the fixing bracket comprises a bracket main beam and a bracket beam, and is characterized in that the sleeve spring device is further included
  • the sleeve spring device is connected to the moving frame beam at one end and the oscillating rod at the other end;
  • a moving frame is mounted on the bracket beam, the moving frame is composed of a moving frame beam and a vertical beam, the movement The frame is driven by a deceleration brake motor, and a symmetrical drive shaft is mounted in the reduction gear box of the deceleration brake motor, and the movable frame is mounted to mount the limiter;
  • the side of the main beam of the bracket is provided with a tow frame body,
  • a drag chain is mounted on the drag chain body;
  • a gas source main pipe is installed on the drag chain, one end of the gas source main pipe is connected with the gas source, and the other end is connected with the gas source diverter valve, and the gas source
  • the other end of the drive shaft is provided with a pulley and a gear for moving the frame, and the gear cooperates with a rack mounted on the upper end surface of the main beam of the bracket.
  • the sleeve spring device comprises a sleeve body, a sleeve spring and a sleeve mandrel.
  • the lower end of the sleeve body is fixed with a sleeve bottom plate, and the sleeve bottom plate is fixedly connected with the swaying rod;
  • the lower end of the sleeve core shaft a flange is connected to the sleeve spring, and the other end of the flange is connected with the slamming rod;
  • the upper end of the sleeve core is fixed on the lower bottom plate of the sleeve hanging plate, the sleeve hanging plate and the moving frame Beam connection.
  • the cylinder assembly is mounted below the moving frame rail.
  • the gas source triplex is mounted on the vertical beam of the moving frame; the pulley is mounted on the upper end of the moving frame, and the moving axle wheel is mounted on the lower end of the moving frame beam.
  • the filter plate grouping and pulling rapping device provided by the invention is installed at the upper end of the filter press main body, and the group rapping device is controlled by the PLC program.
  • the beneficial effects of the invention are as follows: after the first set of filter plates are pulled apart, the moving frame is driven by the deceleration brake motor to the rapping position, and is automatically stopped by the proximity switch controlled by the electric appliance installed on the filter plate, and the air source is controlled. The diverter valve is opened, and the cylinder starts to hammer the vibrating rod through the gas source triple piece to control the number of times the cylinder is vibrated. After the rapping is completed, the vibrating rod is automatically retracted by the sleeve spring device, and the filter cloth rod is vibrated by the vibrating rod. The filter cake automatically falls off. After the first group of rapping is completed, the second group of filter plates is opened, and the rapping is completed in turn.
  • the most terminal is provided with an electronically controlled stopper to return the moving frame to the original position.
  • the PLC program performs control operation, and the number of times of rapping, stroke, etc. can be controlled by the program, which is simple, accurate, fast and convenient.
  • the invention has the advantages of simple and easy operation, effective removal of the filter cake, and sufficient air permeability of the filter cloth to realize fully automatic control, and solves the problem that the filter plate of the filter press is not dropped when the filter plate is grouped, and the filter plate is reached.
  • the grouping pulls off the ideal effect of removing the filter cake, thereby improving the production efficiency; in addition, the manual erasing method is omitted, the labor intensity of the worker is reduced, the damage of the filter cloth is avoided, and the cost is saved and the filtering purpose is achieved.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a side elevational view of Figure 1.
  • Figure 3 is a top plan view of Figure 1.
  • Figure 4 is a schematic view of the structure of the sleeve spring device.
  • Figure 5 is a schematic view showing the installation structure of the filter cloth filter cloth.
  • Fig. 6 is an enlarged side view showing the installation structure of the filter cloth filter cloth.
  • the filter press grouping rapping device of the present invention comprises a fixing bracket and a moving frame
  • the fixing bracket comprises a bracket main beam 1 and a bracket beam 24 .
  • the material used for the frame beam 24 and the bracket main beam 1 is a rectangular pipe material, which is made of Q235 welded.
  • a sleeve spring device 5 is further included, the sleeve spring device is connected at one end to the moving frame beam 16 and at the other end to the oscillating rod 11; a moving frame is mounted on the bracket beam 24, and the moving frame is moved
  • the frame beam 16 and the vertical beam 15 are composed.
  • the material used for moving the frame beam 16 and the vertical beam 15 is channel steel, and the material is welded by Q235, and the moving frame is installed and installed with a limiter.
  • the moving frame is driven by a retarding brake motor 9 and mounted on the vertical beam 15 of the moving frame.
  • a symmetrical drive shaft 14 is mounted in the reduction gear of the retarding brake motor, and the drive shaft 14 is mounted on the retarding brake motor 9
  • the other end of the drive shaft is provided with a pulley 12 and a gear 8 for moving the frame, and the gear is engaged with the rack 2 mounted on the upper end surface of the bracket main beam 1.
  • the pulley 12 is mounted on the upper end of the moving frame, and the moving axle wheel 7 is mounted on the lower end of the moving frame beam 16 to play the role of "positioning" when moving the frame to and from the movement.
  • the holding wheel 7 is provided with a wheel. frame.
  • the side of the main beam 1 of the bracket is provided with a drag chain frame, and the drag chain 17 is mounted on the drag chain frame body, and the drag chain is a support frame of the air source pipeline, and the air source pipeline is installed on the drag chain with the moving frame motion.
  • a gas source main pipe 20 is installed on the towline, and one end of the gas source main pipe is connected to the gas source port 22, and the other end is connected to the gas source diverting valve 19, and the base welding bracket of the gas source diverting valve 19 and the moving frame beam are connected. 16 is connected, the gas source diverter valve 19 is sequentially connected to the cylinder assembly 6 and the gas source triple piece 13 through the gas source sub-pipe 21, and the gas source triple piece 13 is mounted on the vertical beam 15 of the moving frame; The cylinder assembly 6 is mounted below the moving frame rail.
  • the gas C assembly 6 is coaxially mounted with the sleeve spring device 5 and the oscillating rod 11; the fixed bracket is mounted on the upper end of the filter press through the support leg, and the front support leg 10 is connected to the filter press thrust plate 18, The rear support leg 37 is coupled to the cylinder block 38.
  • the sleeve spring device 5 includes a sleeve body 30, a sleeve spring 34 and a sleeve mandrel 31.
  • the lower end of the sleeve body 30 is fixed with a sleeve bottom plate 33.
  • the upper end of the sleeve mandrel 31 is provided with a flange 35 connected to the sleeve spring 34, and the other end of the flange 35 is connected to the rapping rod 11; the upper end of the sleeve mandrel 31 is fixed On the lower bottom plate of the sleeve hanger 32, specifically, the upper end of the sleeve mandrel 31 is provided with a thread and a flange 35, and is fastened to the lower base plate of the sleeve hanger 32 by a nut 36.
  • the sleeve hanger 32 is connected to the moving frame cross member 16 and can be connected by bolts.
  • the oscillating rod is connected with the sleeve spring, the cylinder piston rod impacts the oscillating rod, and a plurality of filter cloth rack rods on the filter plate which are separated by the oscillating rod vibration grouping, and the filter plate grouping the vibrating filter cloth rod rod causes the filter cake to fall , to achieve the purpose of filter cake removal.
  • the filter plate 4 is mounted on the main beam of the filter press, the filter cloth spring bracket 25 is mounted on both sides of the upper end of the filter plate 4, and the filter cloth spring mandrel 28 is provided with a filter cloth spring.
  • the filter cloth spring bracket 25 is connected with the filter cloth spring bracket 25, and the lower end of the filter cloth spring mandrel 28 is connected with the threaded nut spring bracket 25, and the upper end of the filter cloth spring mandrel 28 is a square filter cloth frame rod sleeve 29 is provided with two holes, the filter cloth frame
  • the rod 27 is installed in the hole of the square filter cloth rod sleeve 29, and the two ends are fixed by a circlip, and the filter cloth 3 is made into a sleeve type and is inserted into the filter cloth rack rod 27, and the filter cloth clip of the center feeding hole of the filter cloth 3 is used.
  • the cloth is fastened to the feed hole of the filter plate 4.
  • the filter plate grouping and pulling rapping device provided by the invention is installed at the upper end of the filter press main body, and the group rapping device is controlled by the PLC program.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Cleaning In General (AREA)

Description

压滤机滤板分组振打装置
技术领域：
本发明属于压滤机振打装置的技术领域， 具体地说， 涉及一种压滤机滤 板分组振打装置， 是用于压滤机滤板分组拉开卸除滤饼的振打装置。
背景技术：
压滤机是固液分离行业中的主要过滤设备， 物料经过滤后滤饼留在滤板的 滤室中， 压滤机自动拉板装置把滤板拉开卸除滤饼， 达到过滤的目的。 在现有 技术中， 由于压滤机过滤面积大滤板数量多， 逐块拉板时间长， 采用把数块滤 板分组拉开卸除滤饼来提高生产效率。
目前， 所存在的不足之处为， 由于过滤行业不同滤饼成分复杂， 有的含有 微小颗粒， 有的滤饼还有粘性， 使滤板分组拉开后滤饼不能自动坠落， 如果采 用人工铲除工作效率低， 清除速度慢， 并且使工人增加劳动强度， 同时很容易 损坏滤布， 增加生产成本， 而且也影响过滤效率， 使生产受到影响， 从而使得 滤板分组拉开卸除滤饼出现难题。
发明内容：
本发明的目的在于针对上述存在的问题而提供一种压滤机滤板分组振打装 置。
本发明的技术方案为： 一种压滤机滤板分组振打装置， 包括固定支架、 移 动车架， 所述的固定支架包括支架主梁和支架横梁， 其特征在于， 还包括套筒 弹簧装置， 该套筒弹簧装置一端连接移动车架横梁， 另一端连接振打杆； 在所 述的支架横梁上安装移动车架， 所述的移动车架由移动车架横梁和竖梁组成， 该移动车架由减速制动电机驱动， 在减速制动电机的减速箱内安装有对称的驱 动轴， 移动车架运行安装有限位器； 所述的支架主梁的侧面设有拖链架体， 在 拖链架体上安装有拖链； 在所述的拖链上安装气源主管道， 气源主管道一端与 气源接口连接， 另一端与气源分流阀连接， 该气源分流阀通过气源分管道依次 连接气缸总成、气源三联件； 气缸总成与套筒弹簧装置、振打杆同轴直线安装； 所述的固定支架通过支撑腿安装在压滤机上端，前支撑腿与压滤机止推板连接， 后支撑腿与油缸座连接。
所述的驱动轴另一端安装滑轮和移动车架运行的齿轮， 所述的齿轮与支架 主梁上端面安装的齿条相配合。
所述的套筒弹簧装置包括套筒体、 套筒弹簧和套筒芯轴， 所述的套筒体下 端固定有套筒底板， 该套筒底板与振打杆固定连接； 套筒芯轴下端设有法兰盘 与套筒弹簧连接， 该法兰盘另一端与振打杆连接； 所述的套筒芯轴上端固定在 套筒吊板的下底板上， 套筒吊板与移动车架横梁连接。
气缸总成安装于移动车架横梁下面。
所述的气源三联件安装在移动车架的竖梁上面； 所述的滑轮安装于移动车 架的上端， 该移动车架横梁下端安装移动抱道轮。
本发明提供的滤板分组拉开振打装置安装在压滤机主体上端， 分组振打装 置由 PLC程序控制运行。
本发明的有益效果为： 第一组滤板拉开后， 移动车架由减速制动电机驱动 齿轮传动到振打位置， 通过安装在滤板上的电器控制的接近开关自动停止， 控 制气源分流阀打开， 通过气源三联件使气缸开始锤击振打杆， 控制气缸振打的 次数， 振打完毕， 振打杆由套筒弹簧装置自动缩回， 滤布架杆受到振打杆振动 滤饼自动脱落， 完成第一组振打后， 开始拉开第二组滤板， 依次分组振打完成， 最终端设有电器控制的限位器使移动车架复回原位， 该程序由 PLC程序进行控 制运行， 振打次数、 行程等都可以实现程序控制， 简单准确， 快捷方便。 总之， 本发明结构简单容易操作， 有效地卸除了滤饼， 并使滤布保持足够的透气量， 实现全自动化的控制， 解决了压滤机滤板分组拉开滤饼不坠落的问题， 达到滤 板分组拉开卸除滤饼的理想效果， 从而提高生产效率； 另外， 省去了人工的铲 除方式， 减少工人劳动强度， 避免了滤布的损坏， 既节省了成本又达到很好的 过滤目的。
附图说明：
图 1 为本发明的结构示意图。
图 2为图 1的侧视示意图。
图 3为图 1的俯视示意图。
图 4为套筒弹簧装置结构示意图。
图 5为滤板滤布安装结构示意图。
图 6为滤板滤布安装结构侧面放大示意图。
1.支架主梁, 2.齿条， 3.滤布， 4.滤板， 5.套筒弹簧装置， 6.气缸总成， 7. 抱道轮， 8.齿轮， 9.减速制动电机， 10.前支撑腿， 11.振打杆， 12.滑轮， 13.气源三 联件， 14.驱动轴， 15.竖梁， 16.移动车架横梁， 17.拖链， 18.止推板， 19.气源分流 阀， 20.气源主管道， 21.气源分管道, 22.气源接口， 23.支架腿， 24.支架横梁， 25. 弹簧支架， 26.滤布弹簧， 27.滤布架杆， 28.弹簧芯轴， 29.滤布架杆套， 30.套筒 体， 31.套筒芯轴， 32.套筒吊板， 33.套筒底板， 34.套筒弹簧， 35.法兰盘， 36.螺 母， 37为后支撑腿， 38为油缸座。
具体实施方式：
下面结合附图 本实用新型的技术方案进行详细的说明。
从图 1、 图 2、 图 3可以看出， 本发明的压滤机滤板分组振打装置， 包括固 定支架、移动车架， 所述的固定支架包括支架主梁 1和支架横梁 24， 所述的支 架横梁 24和支架主梁 1使用的材料为长方形管材， 材质为 Q235焊接而成。 还 包括套筒弹簧装置 5， 该套筒弹簧装置一端连接移动车架横梁 16， 另一端连接 振打杆 11 ; 在所述的支架横梁 24上安装移动车架， 所述的移动车架由移动车 架横梁 16和竖梁 15组成， 移动车架横梁 16和竖梁 15使用的材料为槽钢， 材 质为 Q235焊接而成， 移动车架运行安装有限位器。
该移动车架由减速制动电机驱动 9， 安装在移动车架的竖梁 15上面， 在减 速制动电机的减速箱内安装有对称的驱动轴 14， 驱动轴 14安装在减速制动电 机 9的孔内， 驱动轴另一端安装滑轮 12和移动车架运行的齿轮 8， 所述的齿轮 与与支架主梁 1上端面安装的齿条 2相配合。所述的滑轮 12安装于移动车架的 上端， 该移动车架横梁 16下端安装移动抱道轮 7， 起到移动车架往返运动时的 "定位"的作用， 该抱道轮 7设有轮架。
所述的支架主梁 1的侧面设有拖链架体， 在拖链架体上安装有拖链 17， 拖 链为气源管道的支撑架， 气源管道安装在拖链上随移动车架运动。
在所述的拖链上安装气源主管道 20，气源主管道一端与气源接口 22连接， 另一端与气源分流阀 19连接， 气源分流阀 19的底座焊接支架与移动车架横梁 16连接， 该气源分流阀 19通过气源分管道 21依次连接气缸总成 6、 气源三联 件 13， 所述的气源三联件 13安装在移动车架的竖梁 15上面； 所述的气缸总成 6安装于移动车架横梁下面。
气 C总成 6与套筒弹簧装置 5、振打杆 11同轴直线安装； 所述的固定支架 通过支撑腿安装在压滤机上端， 前支撑腿 10与压滤机止推板 18连接， 后支撑 腿 37与油缸座 38连接。
从图 4中可以看出， 所述的套筒弹簧装置 5包括套筒体 30、 套筒弹簧 34 和套筒芯轴 31;所述的套筒体 30下端固定有套筒底板 33，该套筒底板 33焊接 在振打杆 11上面； 套筒芯轴 31下端设有法兰盘 35与套筒弹簧 34连接， 该法 兰盘 35另一端与振打杆 11连接； 所述的套筒芯轴 31上端固定在套筒吊板 32 的下底板上， 具体为套筒芯轴 31上端设有螺纹和法兰盘 35， 用螺母 36紧固在 套筒吊板 32的下底板上。套筒吊板 32与移动车架横梁 16连接，可以通过螺栓 连接。 振打杆与套筒弹簧连接， 气缸活塞杆冲击振打杆， 由振打杆震动分组拉 开的滤板上的多个滤布架杆， 滤板分组振打滤布架杆使滤饼坠落， 达到滤饼卸 除的目的。
从图 5、 图 6可以看出， 该滤板 4安装在压滤机的主梁上， 滤布弹簧支架 25安装在滤板 4的上端两侧，滤布弹簧芯轴 28中间装滤布弹簧 26与滤布弹簧 支架 25连接，滤布弹簧芯轴 28下端为螺紋螺母与滤布弹簧支架 25连接，滤布 弹簧芯轴 28上端为方形滤布架杆套 29设有两孔，滤布架杆 27安装在方形滤布 架杆套 29的孔内， 两端用卡簧固定， 滤布 3制作成套筒式进入滤布架杆 27固 定， 滤布 3的中心进料孔用滤布夹布器紧固在滤板 4的进料孔上。
本发明提供的滤板分组拉开振打装置安装在压滤机主体上端， 分组振打装 置由 PLC程序控制运行。

Claims

权利要求
1.一种压滤机滤板分组振打装置， 包括固定支架、 移动车架， 所述的固定 支架包括支架主梁和支架横梁， 其特征在于， 还包括套筒弹簧装置， 该套筒弹 簧装置一端连接移动车架横梁， 另一端连接振打杆； 在所述的支架横梁上安装 移动车架， 所述的移动车架由移动车架横梁和竖梁组成， 该移动车架由减速制 动电机驱动， 在减速制动电机的减速箱内安装有对称的驱动轴， 移动车架运行 安装有限位器； 所述的支架主梁的侧面设有拖链架体， 在拖链架体上安装有拖 链； 在所述的拖链上安装气源主管道， 气源主管道一端与气源接口连接， 另一 端与气源分流阀连接， 该气源分流阀通过气源分管道依次连接气缸总成、 气源 三联件； 气缸总成与套筒弹簧装置、 振打杆同轴直线安装； 所述的固定支架通 过支撑腿安装在压滤机上端， 前支撑腿与压滤机止推板连接， 后支撑腿与油缸 座连接。
2.根据权利要求 1所述的压滤机滤板分组振打装置， 其特征在于， 所述的 驱动轴另一端安装滑轮和移动车架运行的齿轮， 所述的齿轮与支架主梁上端面 安装的齿条相配合。
3. 根据权利要求 1所述的压滤机滤板分组振打装置， 其特征在于， 所述的 套筒弹簧装置包括套筒体、 套筒弹簧和套筒芯轴， 所述的套筒体下端固定有套 筒底板， 该套筒底板与振打杆固定连接； 套筒芯轴下端设有法兰盘与套筒弹簧 连接， 该法兰盘另一端与振打杆连接； 所述的套筒芯轴上端固定在套筒吊板的 下底板， 套筒吊板与移动车架横梁连接。
4.根据权利要求 1所述的压滤机滤板分组振打装置， 其特征在于， 气缸总 成安装于移动车架横梁下面。
5.根据权利要求 1所述的压滤机滤板分组振打装置， 其特征在于， 所述的 气源三联件安装在移动车架的竖梁上面； 所述的滑轮安装于移动车架的上端， 该移动车架横梁下端 ¾装移动抱道轮。
PCT/CN2010/000819 2009-07-07 2010-06-10 压滤机滤板分组振打装置 WO2011003271A1 (zh)

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