CN105664556B - A kind of helixseal continuous pulp discharge filter for supercritical water treatment technique - Google Patents
A kind of helixseal continuous pulp discharge filter for supercritical water treatment technique Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
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Abstract
本发明公开了一种用于超临界水处理工艺的螺旋密封连续排料过滤器，包括过滤器腔体及设置在过滤器腔体顶部的电动机，在过滤器腔体壁上端设有进料口，在过滤器腔体内部设有过滤网，过滤网外侧设有清液出口，在过滤器腔体底部设有竖直排料管；过滤器腔体中轴线位置设有由电动机带动旋转的驱动杆，驱动杆上设有若干电动刮刷，在驱动杆底部还设有两级螺旋叶片。由于在过滤器腔体底部设有竖直排料管，使得排料管中的滤渣比水平布置的排料管中的滤渣因为重力和压力的原因更加容易排出；在驱动杆底部设有两级螺旋叶片，可以防止由于滤渣太多造成的挤压团聚现象，同时通过起密封、推动滤渣作用的螺旋叶片来推动滤渣排出。
The invention discloses a spiral-sealed continuous discharge filter for supercritical water treatment process, which comprises a filter cavity and a motor arranged on the top of the filter cavity, and a feed inlet is arranged at the upper end of the filter cavity wall , there is a filter screen inside the filter chamber, a clear liquid outlet is provided outside the filter screen, and a vertical discharge pipe is provided at the bottom of the filter chamber; the central axis of the filter chamber is provided with a drive driven by a motor There are several electric scrapers on the driving rod, and two-stage helical blades are also arranged at the bottom of the driving rod. Since there is a vertical discharge pipe at the bottom of the filter cavity, the filter residue in the discharge pipe is easier to discharge than the filter residue in the horizontal discharge pipe due to gravity and pressure; there are two stages at the bottom of the drive rod The helical blade can prevent the phenomenon of extrusion and agglomeration caused by too much filter residue, and at the same time, the helical blade that acts as a seal and pushes the filter residue to promote the discharge of the filter residue.
Description
技术领域technical field
本发明属于过滤分离技术领域，具体涉及一种用于超临界水处理工艺的螺旋密封连续排料过滤器。The invention belongs to the technical field of filtration and separation, and in particular relates to a spiral-sealed continuous discharge filter used in a supercritical water treatment process.
背景技术Background technique
目前连续过滤器在化工生产中应用十分广泛，具有结构简单、过滤精度高、可以自动清洗滤网以及PLC智能控制排料等诸多优点。由于电磁阀反应灵敏、使用安全、价格较低，所以常规的连续过滤器的排料装置都是使用电磁阀作为排料管道开关，而电磁阀在竖直排料管中的可靠性很差，使用寿命大大受限，因此常规连续过滤器的排料管都是水平安装。连续过滤器正常排料过程为：被滤液通过进液口进入过滤网内部，以内向外通过过滤网，滤后的清液通过清液出口进入后续工艺，滤渣由于过滤网的拦截作用积累在滤网内壁，当滤网内壁积累到一定量滤渣的时候，监测系统监测到压差到达清洗压差或根据用户设定时间判断清洗时间已到，则PLC发出指令启动电动刮刷，电动刮刷开始旋转，清洗滤网内壁滤渣，滤渣由于重力沉降作用积累到排料电磁阀进口，同时，PLC给电磁阀发出指令，打开电磁阀，利用过滤器内的压力和电磁阀出口的压差进行排料。但是，用于超临界水处理工艺的废液或污泥含料量一般较高，经处理后含料量仍然较高，如果此时滤网内壁会在短时间内积累很多滤渣，被电动刮刷清洗下来的滤渣会在排料管内和排料电磁阀进口端堆积，形成较为致密的滤渣层，可能团聚成块，这时候即使打开排料电磁阀开关，通过过滤器内外的压差也很难实现顺畅排料，而过滤器内的滤渣则会越积越多，影响过滤器的正常工作运行，此时必须要进行人工疏通排料管道，辅助排料，这种办法费时费力，效率极低。另外，即使能顺利排料，这种依靠压差或时间自动控制排料的间歇式排料方式有个最大的缺点：排料时过滤器腔体内部会有压力波动，进而影响过滤器进口管道压力，造成整个系统的压力波动。因为排料时过滤器的腔体通过排料管、排料电磁阀与大气连通，随着排料过程的进行，过滤器的腔体压力会逐渐下降，当排料过程结束，排料电磁阀关闭，过滤器的腔体压力又会逐渐上升，就这样排料阀不断的开启和关闭，压力一直不能保持稳定，必然会影响系统安全。At present, continuous filters are widely used in chemical production, and have many advantages such as simple structure, high filtration accuracy, automatic cleaning of filter screens, and PLC intelligent control of discharge. Due to the sensitive response, safe use and low price of the solenoid valve, the discharge device of the conventional continuous filter uses the solenoid valve as the switch of the discharge pipe, and the reliability of the solenoid valve in the vertical discharge pipe is very poor. The service life is greatly limited, so the discharge pipes of conventional continuous filters are installed horizontally. The normal discharge process of the continuous filter is: the filtrate enters the filter screen through the liquid inlet, passes through the filter screen from the inside to the outside, and the filtered clear liquid enters the subsequent process through the clear liquid outlet. When the inner wall of the filter screen accumulates a certain amount of filter residue, the monitoring system detects that the pressure difference reaches the cleaning pressure difference or judges that the cleaning time has come according to the time set by the user, then the PLC sends an instruction to start the electric scraper, and the electric scraper starts Rotate to clean the filter residue on the inner wall of the filter screen. The filter residue accumulates to the inlet of the discharge solenoid valve due to gravity sedimentation. At the same time, the PLC sends instructions to the solenoid valve to open the solenoid valve, and the pressure difference between the pressure inside the filter and the outlet of the solenoid valve is used for discharge. . However, the waste liquid or sludge used in the supercritical water treatment process generally has a high material content, and the material content after treatment is still high. The filter residue cleaned by the brush will accumulate in the discharge pipe and the inlet of the discharge solenoid valve, forming a relatively dense filter residue layer, which may agglomerate into blocks. At this time, even if the switch of the discharge solenoid valve is turned on, the pressure difference inside and outside the filter will be very It is difficult to achieve smooth discharge, and the filter residue in the filter will accumulate more and more, which will affect the normal operation of the filter. At this time, it is necessary to manually dredge the discharge pipe to assist the discharge. This method is time-consuming and laborious, and the efficiency is extremely high. Low. In addition, even if the material can be discharged smoothly, this intermittent discharge method that relies on pressure difference or time to automatically control the discharge has the biggest disadvantage: there will be pressure fluctuations inside the filter cavity during discharge, which will affect the pressure of the filter inlet pipeline , causing pressure fluctuations throughout the system. Because the cavity of the filter is connected to the atmosphere through the discharge pipe and the discharge solenoid valve during discharge, as the discharge process progresses, the pressure of the filter cavity will gradually decrease. When the discharge process ends, the discharge solenoid valve will Closed, the cavity pressure of the filter will gradually rise again, so the discharge valve is continuously opened and closed, the pressure cannot be kept stable, which will inevitably affect the safety of the system.
发明内容Contents of the invention
为了克服上述现有技术存在的缺陷，本发明的目的在于提供一种用于超临界水处理工艺的螺旋密封连续排料过滤器，该过滤器结构设计合理，易操作，能够实现连续无堵塞排料，且排料时过滤腔体内部压力稳定。In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide a spiral-sealed continuous discharge filter for supercritical water treatment process. material, and the internal pressure of the filter cavity is stable when discharging.
本发明是通过以下技术方案来实现：The present invention is achieved through the following technical solutions:
一种用于超临界水处理工艺的螺旋密封连续排料过滤器，包括过滤器腔体及设置在过滤器腔体顶部的电动机，在过滤器腔体壁上端设有进料口，在过滤器腔体内部设有过滤网，过滤网外侧设有清液出口，在过滤器腔体底部设有竖直排料管；过滤器腔体中轴线位置设有由电动机带动旋转的驱动杆，驱动杆上设有若干电动刮刷，在驱动杆底部还设有两级螺旋叶片。A spiral-sealed continuous discharge filter for supercritical water treatment process, including a filter cavity and a motor arranged on the top of the filter cavity, a feed inlet is arranged at the upper end of the filter cavity wall, and a There is a filter screen inside the cavity, a clear liquid outlet is provided on the outside of the filter screen, and a vertical discharge pipe is provided at the bottom of the filter cavity; the central axis of the filter cavity is provided with a drive rod driven by a motor, and the drive rod There are several electric scrapers on the top, and there are two-stage helical blades at the bottom of the drive rod.
所述两级螺旋叶片由上到下依次包括用于搅动滤渣的搅拌叶片和用于密封及推动滤渣的螺旋叶片。The two-stage helical blades sequentially include a stirring blade for stirring the filter residue and a helical blade for sealing and pushing the filter residue from top to bottom.
用于搅动滤渣的搅拌叶片设置在过滤器腔体底部的锥形腔内；用于密封及推动滤渣的螺旋叶片设置在竖直排料管内。Stirring blades for stirring the filter residue are arranged in the conical cavity at the bottom of the filter cavity; spiral blades for sealing and pushing the filter residue are arranged in the vertical discharge pipe.
用于密封及推动滤渣的螺旋叶片距离竖直排料管内壁的距离为0.15～1mm。The distance between the helical blade for sealing and pushing the filter residue and the inner wall of the vertical discharge pipe is 0.15-1 mm.
用于搅动滤渣的搅拌叶片的直径大于用于密封及推动滤渣的螺旋叶片的直径。The diameter of the stirring blade used for stirring the filter residue is larger than the diameter of the helical blade used for sealing and pushing the filter residue.
用于搅动滤渣的搅拌叶片的数量为2～8片。The number of stirring blades for stirring the filter residue is 2 to 8 pieces.
用于密封及推动滤渣的螺旋叶片的数量为2～10片。The number of spiral blades used for sealing and pushing the filter residue is 2-10.
在竖直排料管底部焊接有排料口。A discharge opening is welded at the bottom of the vertical discharge pipe.
与现有技术相比，本发明具有以下有益的技术效果：Compared with the prior art, the present invention has the following beneficial technical effects:
本发明公开了一种用于超临界水处理工艺的螺旋密封连续排料过滤器，在过滤腔的底部布置了竖直方向的竖直排料管，使得排料管中的滤渣比水平布置的排料管中的滤渣因为重力和压力的原因更加容易排出，有效解决了过滤高含料液体的连续过滤器排料易堵塞的问题。同时，在驱动杆底部还设有两级螺旋叶片，是为了搅动和密封、推动滤渣层，两级螺旋叶片在排料下落的不同位置起到了相应的作用，保证物料有效排出的同时能够稳定过滤器腔内部压力。本发明设计的螺旋密封连续排料过滤器取消了排料电磁阀的设置，能够保证更顺畅的排料，且压力稳定，系统安全。因此，本发明的螺旋密封连续排料过滤器能够广泛应用于超临界水处理工艺的废液或污泥处理。The invention discloses a spiral-sealed continuous discharge filter used in a supercritical water treatment process. A vertical discharge pipe in a vertical direction is arranged at the bottom of a filter cavity, so that the filter residue in the discharge pipe is larger than that of a horizontally arranged filter. The filter residue in the discharge pipe is easier to discharge due to gravity and pressure, which effectively solves the problem of easy blockage of the continuous filter for filtering high-content liquid. At the same time, there are two-stage helical blades at the bottom of the drive rod to stir, seal, and push the filter residue layer. The two-stage helical blades play a corresponding role in different positions where the material falls, ensuring effective material discharge and stable filtration. pressure inside the cavity. The spiral-sealed continuous discharge filter designed by the present invention cancels the setting of the discharge solenoid valve, which can ensure smoother discharge, and the pressure is stable and the system is safe. Therefore, the spiral sealing continuous discharge filter of the present invention can be widely used in waste liquid or sludge treatment of supercritical water treatment process.
进一步地，两级螺旋叶片由上到下依次包括用于搅动滤渣的搅拌叶片和用于密封及推动滤渣的螺旋叶片，用于搅动滤渣的搅拌叶片是为了防止由于滤渣层的过度积累挤压导致的团聚成块而难以往下移动的问题，起密封及推动滤渣的螺旋叶片是为了通过对滤渣进行密封来实现排料过程时过滤器腔体内的压力稳定和推动滤渣排出。Further, the two-stage spiral blades include a stirring blade for stirring the filter residue and a spiral blade for sealing and pushing the filter residue from top to bottom. The stirring blade for stirring the filter residue is to prevent excessive accumulation and extrusion of the filter residue layer. The problem of agglomeration into blocks and difficult to move down, the helical blade that seals and pushes the filter residue is to seal the filter residue to stabilize the pressure in the filter cavity and push the filter residue to discharge during the discharge process.
附图说明Description of drawings
图1为本发明的用于超临界水处理工艺的螺旋密封连续排料过滤器的结构示意图。Fig. 1 is a structural schematic diagram of a spiral-sealed continuous discharge filter used in a supercritical water treatment process of the present invention.
其中，1.电动机；2.进液口；3.过滤网；4.电动刮刷；5.清液出口；6.用于搅动滤渣的搅拌叶片；7.用于密封及推动滤渣的螺旋叶片；8.竖直排料管；9.排料口。Among them, 1. Motor; 2. Liquid inlet; 3. Filter screen; 4. Electric scraper; 5. Clear liquid outlet; 6. Stirring blade for stirring filter residue; 7. Spiral blade for sealing and pushing filter residue ; 8. Vertical discharge pipe; 9. Discharge port.
具体实施方式Detailed ways
下面结合具体的实施例对本发明做进一步的详细说明，所述是对本发明的解释而不是限定。The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
参见图1，本发明的一种用于超临界水处理工艺的螺旋密封连续排料过滤器，包括过滤器腔及设置在过滤器腔体顶部的电动机1，在过滤器腔体壁上端设有进料口2，在过滤器腔体内部设有过滤网3，过滤网3外侧设有清液出口5，过滤器腔体是圆筒型的，过滤网也是圆筒型的，在圆筒型滤网的外面是清液出口，是当滤液通过过滤网过滤之后，滤液中的固体被滤网截留在滤网内壁，过滤后的清液通过清液出口排出；在过滤器腔体底部设有竖直排料管8；过滤器腔体中轴线位置设有由电动机1带动旋转的驱动杆，驱动杆上设有若干电动刮刷4，在驱动杆底部还设有两级螺旋叶片。Referring to Fig. 1, a kind of spiral seal continuous discharge filter that is used for supercritical water treatment process of the present invention, comprises filter cavity and is arranged on the motor 1 of filter cavity top, is provided with on filter cavity wall upper end The feed port 2 is provided with a filter screen 3 inside the filter cavity, and a clear liquid outlet 5 is provided outside the filter screen 3. The filter cavity is cylindrical, and the filter screen is also cylindrical. The outside of the filter screen is the clear liquid outlet. After the filtrate is filtered through the filter screen, the solids in the filtrate are trapped on the inner wall of the filter screen by the filter screen, and the filtered clear liquid is discharged through the clear liquid outlet; Vertical discharge pipe 8; a driving rod driven by a motor 1 is provided at the central axis of the filter cavity, and a plurality of electric scrapers 4 are arranged on the driving rod, and two-stage helical blades are also provided at the bottom of the driving rod.
所述两级螺旋叶片由上到下依次包括用于搅动滤渣的搅拌叶片6和用于密封及推动滤渣的螺旋叶片7。用于搅动滤渣的搅拌叶片6设置在过滤器腔体底部的锥形腔内；用于密封及推动滤渣的螺旋叶片7设置在竖直排料管8内，在竖直排料管8底部焊接有排料口9。The two-stage helical blades sequentially include a stirring blade 6 for stirring the filter residue and a helical blade 7 for sealing and pushing the filter residue from top to bottom. The stirring blade 6 for stirring the filter residue is set in the conical cavity at the bottom of the filter cavity; the spiral blade 7 for sealing and pushing the filter residue is set in the vertical discharge pipe 8 and welded at the bottom of the vertical discharge pipe 8 There is a discharge port 9.
实施例1Example 1
本实施例用于超临界水处理工艺的螺旋密封连续排料过滤器，包括常规的连续过滤器，由电动机1带动的驱动杆安装在过滤器腔体中心，驱动杆上设有电动刮刷4。在过滤器腔体底部设有竖直排料管8，由电动机1带动带有电动刮刷4的驱动杆下端从上到下依次装有2片用于搅动滤渣的搅拌叶片6和4片用于密封及推动滤渣的螺旋叶片7，用于搅动滤渣的搅拌叶片6的叶片直径比用于密封及推动滤渣的螺旋叶片7的叶片直径更大，用于密封及推动滤渣的螺旋叶片7的叶片边缘与竖直排料管内壁间距为0.15～1mm。在竖直排料管8底部焊接有排料口9。在过滤和排料过程中，进口压力维持0.4MPa，过滤器内部腔体压力始终保持在0.2MPa左右，波动值不超过5％。The screw seal continuous discharge filter used in the supercritical water treatment process in this embodiment includes a conventional continuous filter, the driving rod driven by the motor 1 is installed in the center of the filter cavity, and the driving rod is provided with an electric scraper 4 . There is a vertical discharge pipe 8 at the bottom of the filter cavity, and the lower end of the driving rod with the electric scraper 4 driven by the motor 1 is sequentially equipped with 2 stirring blades 6 and 4 stirring blades for stirring the filter residue from top to bottom. For sealing and pushing the helical blade 7 of the filter residue, the blade diameter of the stirring blade 6 for stirring the filter residue is larger than that of the blade diameter of the helical blade 7 for sealing and pushing the filter residue, and the blade of the helical blade 7 for sealing and pushing the filter residue The distance between the edge and the inner wall of the vertical discharge pipe is 0.15-1mm. A discharge opening 9 is welded at the bottom of the vertical discharge pipe 8 . In the process of filtering and discharging, the inlet pressure is maintained at 0.4MPa, and the pressure in the inner cavity of the filter is always maintained at about 0.2MPa, and the fluctuation value does not exceed 5%.
实施例2Example 2
本实施例用于超临界水处理工艺的螺旋密封连续排料过滤器，包括常规的连续过滤器，由电动机1带动的驱动杆安装在过滤器腔体中心，驱动杆上设有电动刮刷4。在过滤器腔体底部设有竖直排料管8，由电动机1带动带有电动刮刷4的驱动杆下端从上到下依次装有4片用于搅动滤渣的搅拌叶片6和4片用于密封及推动滤渣的螺旋叶片7，用于搅动滤渣的搅拌叶片6的叶片直径比用于密封及推动滤渣的螺旋叶片7的叶片直径更大，用于密封及推动滤渣的螺旋叶片7的叶片边缘与竖直排料管内壁间距为0.15～1mm。在竖直排料管8底部焊接有排料口9。在过滤和排料过程中，进口压力维持0.4MPa，过滤器内部腔体压力始终保持在0.2MPa左右，波动值不超过5％。The screw seal continuous discharge filter used in the supercritical water treatment process in this embodiment includes a conventional continuous filter, the driving rod driven by the motor 1 is installed in the center of the filter cavity, and the driving rod is provided with an electric scraper 4 . There is a vertical discharge pipe 8 at the bottom of the filter cavity, and the lower end of the driving rod with the electric scraper 4 driven by the motor 1 is sequentially equipped with 4 stirring blades 6 and 4 stirring blades for stirring the filter residue from top to bottom. For sealing and pushing the helical blade 7 of the filter residue, the blade diameter of the stirring blade 6 for stirring the filter residue is larger than that of the blade diameter of the helical blade 7 for sealing and pushing the filter residue, and the blade of the helical blade 7 for sealing and pushing the filter residue The distance between the edge and the inner wall of the vertical discharge pipe is 0.15-1mm. A discharge opening 9 is welded at the bottom of the vertical discharge pipe 8 . In the process of filtering and discharging, the inlet pressure is maintained at 0.4MPa, and the pressure in the inner cavity of the filter is always maintained at about 0.2MPa, and the fluctuation value does not exceed 5%.
实施例3Example 3
本实施例用于超临界水处理工艺的螺旋密封连续排料过滤器，包括常规的连续过滤器，由电动机1带动的驱动杆安装在过滤器腔体中心，驱动杆上设有电动刮刷4。在过滤器腔体底部设有竖直排料管8，由电动机1带动带有电动刮刷4的驱动杆下端从上到下依次装有4片用于搅动滤渣的搅拌叶片6和6片用于密封及推动滤渣的螺旋叶片7，用于搅动滤渣的搅拌叶片6的叶片直径比用于密封及推动滤渣的螺旋叶片7的叶片直径更大，用于密封及推动滤渣的螺旋叶片7的叶片边缘与竖直排料管内壁间距为0.15～1mm。在竖直排料管8底部焊接有排料口9。在过滤和排料过程中，进口压力维持0.4MPa，过滤器内部腔体压力始终保持在0.2MPa左右，波动值不超过5％。The screw seal continuous discharge filter used in the supercritical water treatment process in this embodiment includes a conventional continuous filter, the driving rod driven by the motor 1 is installed in the center of the filter cavity, and the driving rod is provided with an electric scraper 4 . There is a vertical discharge pipe 8 at the bottom of the filter cavity, and the lower end of the driving rod with the electric scraper 4 driven by the motor 1 is sequentially equipped with 4 stirring blades 6 and 6 for stirring the filter residue from top to bottom. For sealing and pushing the helical blade 7 of the filter residue, the blade diameter of the stirring blade 6 for stirring the filter residue is larger than that of the blade diameter of the helical blade 7 for sealing and pushing the filter residue, and the blade of the helical blade 7 for sealing and pushing the filter residue The distance between the edge and the inner wall of the vertical discharge pipe is 0.15-1mm. A discharge opening 9 is welded at the bottom of the vertical discharge pipe 8 . In the process of filtering and discharging, the inlet pressure is maintained at 0.4MPa, and the pressure in the inner cavity of the filter is always maintained at about 0.2MPa, and the fluctuation value does not exceed 5%.
由于在连续过滤器的排料口下竖直放置了竖直排料管8，使得排料管中的滤渣比水平布置的排料管中的滤渣因为重力和压力的原因更加容易排出；在由电机带动的设有电动刮刷4的驱动杆下端装有用于搅动滤渣的搅拌叶片6和用于密封及推动滤渣的螺旋叶片7，可以防止由于滤渣太多造成的挤压团聚现象，同时通过起密封、推动滤渣作用的螺旋叶片来推动滤渣排出。Since the vertical discharge pipe 8 is vertically placed under the discharge port of the continuous filter, the filter residue in the discharge pipe is more easily discharged than the filter residue in the horizontally arranged discharge pipe because of gravity and pressure; The lower end of the driving rod driven by the motor and provided with the electric scraper 4 is equipped with a stirring blade 6 for stirring the filter residue and a helical blade 7 for sealing and pushing the filter residue, which can prevent the phenomenon of extrusion and agglomeration caused by too much filter residue, and at the same time pass through Seal and push the helical blade of the filter residue to push the filter residue out.
以上对本发明的三个实施例进行了详细说明，但所述内容仅为本发明的较佳实施例，不能被认为用于限定本发明的实施范围。凡依本发明申请范围所作的均等变化与改进等，均应仍归属于本发明的专利涵盖范围之内。The three embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.
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