WO2022127598A1 - 压滤机滤布脱渣自洁机构 - Google Patents

压滤机滤布脱渣自洁机构 Download PDF

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Publication number
WO2022127598A1
WO2022127598A1 PCT/CN2021/134789 CN2021134789W WO2022127598A1 WO 2022127598 A1 WO2022127598 A1 WO 2022127598A1 CN 2021134789 W CN2021134789 W CN 2021134789W WO 2022127598 A1 WO2022127598 A1 WO 2022127598A1
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WO
WIPO (PCT)
Prior art keywords
rod
filter
filter cloth
cloth
curved
Prior art date
Application number
PCT/CN2021/134789
Other languages
English (en)
French (fr)
Inventor
罗章平
吴威
Original Assignee
第一环保深圳股份有限公司
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 第一环保深圳股份有限公司 filed Critical 第一环保深圳股份有限公司
Priority to PCT/CN2021/137153 priority Critical patent/WO2022127709A1/zh
Publication of WO2022127598A1 publication Critical patent/WO2022127598A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D25/00Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32Removal of the filter cakes
    • B01D25/34Removal of the filter cakes by moving, e.g. rotating, the filter elements
    • B01D25/346Removal of the filter cakes by moving, e.g. rotating, the filter elements by vibration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D25/00Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32Removal of the filter cakes

Definitions

  • the invention relates to the field of filter press equipment, in particular to a slag removal and self-cleaning mechanism for filter cloth of a filter press.
  • the filter press uses a special filter medium to exert a certain pressure on the object to make the liquid dialyze out of a kind of mechanical equipment, which is a commonly used solid-liquid separation equipment. It was used in chemical production in the early 18th century and is still widely used in chemical, pharmaceutical, metallurgy, dyestuff, food, brewing, ceramics and environmental protection industries.
  • the filter plate is the main component.
  • a space for accommodating the filter press object is formed between the two adjacent filter plates—the filter chamber.
  • the through hole, or feeding hole is formed in the filter chamber after the pressure filtration is completed. When this process is complete, the filter cake needs to be separated and the filter cloth made cleaner.
  • the current technology basically relies on the filter cake's own gravity to fall or beating, and some rely on external flushing equipment for flushing, as well as manual mud scraping, cleaning, plus pneumatic, water supply, hitting and other mechanical facilities.
  • the entire filter unit will be impacted, not only the effect is poor, but also the components are easily damaged, and most of them have complex structure, low efficiency, high cost, and short service life of filter cloth and filter plate.
  • the filter press array is based on two adjacent filter plates as a unit, the middle interface is the center, the two sides are symmetrical, and the lower ends of the multi-bending connecting rods are hinged to each other and are hinged to both sides of the filter plate through the side shafts.
  • the rod is hinged by two bent rods through the top rotating shaft, and a push-pull structure is formed in the lateral direction. The structure of one unit is described below.
  • the inner side of the curved rod is provided with a support, and a support rod is connected between the two supports on the same side; the two ends of the filter cloth are respectively fixed on the feeders between the adjacent opposite filter plates and are respectively directed to the feeder. It extends down to the bottom end of the respective filter plates, and the middle section passes through the outer sides of the two adjacent struts on the inner side of the curved connecting rod.
  • the filter cloth section is straight at the turning point and between the turning points of the two poles, and the filter cloth can be pulled and torn by the two poles, that is, the filter cloth section can be pulled to the flat from the fixed place to the turning point and between the two turning points.
  • the middle of the top surface of the filter cloth is fixed with a filter cloth rapping rod in the transverse direction of the filter cloth, and the length is the same as the width of the filter cloth.
  • Inverted U-shaped groove structure In order to push and pull the entire filter press flexibly, the side shaft and the top shaft can be equipped with built-in bearings.
  • the curved connecting rod, support rod and rapping rod are all made of metal materials such as stainless steel.
  • the weight of the rapping rod should be moderate, according to actual needs. Setting, hollow material or tubular structure can be used in it, and the cross-sectional shape can be rectangular, square or oval, etc.
  • the fixing method can be inserted into the cloth pockets of suitable size preset on both sides of the top of the inverted U-shaped groove formed by the filter cloth, or the rapping rod can be fixed on the filter cloth by other methods.
  • the filter plate moves relatively
  • the limit tension it generally refers to its maximum opening angle.
  • the limited opening angle of the curved connecting rod is limited by the positioning pin on the side of the filter plate, or determined by the overall operation of the external machinery.
  • the curved connecting rod reaches the maximum opening angle , because the rapping rod falls under the action of gravity, the filter cloth is pulled out, so that the filter cake or filter residue accumulated in the filter chamber during the filter press process is pulled to the filter chamber together with the filter cloth and falls down.
  • the rapping rod In order to achieve the purpose of separating the filter cake or filter residue from the filter cloth, if the filter plate is pulled apart at a certain speed, the rapping rod will have the continuity of rushing upwards, reaching a certain height, and then falling down under the action of its own gravity. Repeating this for several times can shake off the fine filter residue adhering to the filter cloth, which is suitable for the filter residue with poor viscosity or granular shape.
  • a top rod is provided to be hinged with the two opposing two-bend connecting rod top rotating shafts, the middle of the top rod is provided with a vertically downward guide rod, and the lower end of the guide rod is provided with a hanging hammer.
  • the rapping rods may be in contact with each other.
  • the top rod here is the top end of the curved connecting rod connected to the opposite side of the filter plate, and is connected to two opposite top shafts.
  • the rapping rod is under the action of continuity. Hit the hanging hammer upwards to drive the filter cloth to vibrate strongly, and the filter cake with slightly stronger viscosity, such as mud cake, can be shaken off.
  • the guide rod passes through the opening provided on the top rod and is connected with bolts, and the bolts can fix the guide rod and adjust the length of the guide rod extending downward.
  • the guide rod is fixed on the top rod, and the length of its downward extension can be adjusted, which is more suitable for eliminating errors caused by production, design, installation and site in the actual production process.
  • the support is fixed on the lower end of the reed on the inner side of the curved rod, and the upper end of the reed is fixed on the inner side of the curved rod, so that the support can be rotated under the action of external force.
  • the support is set on the spring plate, and the spring plate can be rotated forward or reversely by a small angle. First of all, it can buffer the force acting on the filter cloth during the collision between the hanging hammer and the rapping rod, and protect the filter cloth. In addition, the filter cloth is more prone to vibration.
  • the curved rod can be composed of two parts, the straight rod and the arc-shaped rod are hinged by the bending shaft, and the inner side of the straight rod and the arc-shaped rod is also provided with an adjustable position stopper to prevent the arc-shaped rod from over-rotating inward. or limit screw.
  • the curved rod is composed of a straight rod and an arc-shaped rod, which is conducive to saving materials, increasing the height of the ejector rod or the opening angle of the curved connecting rod when the overall material size is limited, and eliminating the design problems. error.
  • the side of the plate frame of the filter plate is provided with a bending rod rotation limit pin to limit the maximum opening angle of the bending rod.
  • the limit pin is set at a suitable position at the lower end of the curved connecting rod, and the required size is determined according to the calculation of the production experiment.
  • the hanging hammer is set in a rod shape, the direction is consistent with the filter cloth rapping rod, and the length is corresponding.
  • the hanging hammer is set in the shape of an elongated rod, so that the force of the rapping rod is more uniform when it is struck.
  • a permanent magnet with a vertical polarity is embedded in the lower end of the pendant, and a permanent magnet with an opposite polarity is also embedded in the corresponding position of the rapping rod, and their contact surfaces have the same polarity and repel each other.
  • a repulsive force will be generated.
  • the repulsive force is large enough, the impact and noise caused by the collision between the hanging hammer and the rapping rod can be eliminated, and the filter cloth can be increased as the rapping rod goes up and down.
  • the number of vibrations (equivalent to having a spring).
  • the permanent magnet can be embedded, so that the permanent magnet has a certain recessed distance relative to the lower end surface of the hanging hammer or the upper end surface of the rapping rod, so as to prevent the permanent magnet from being damaged by direct impact.
  • an electromagnet with a polarity along the vertical direction is embedded at the lower end of the hanging hammer, a permanent magnet is embedded at the corresponding position of the rapping rod, and a current of changing direction is passed through the coil of the electromagnet under the control of an external control circuit, It can cause the rapping rod to vibrate or hit the pendant.
  • the pendant and the rapping rod are sometimes attracted and sometimes repelled, so that the pendant and the rapping rod are knocked in a close range, and the filter cloth also vibrates strongly.
  • the vibration frequency is determined by the frequency of the change of the magnetic pole of the electromagnet. In the case of high viscosity of the filter cake, this method is more conducive to its falling off and the filter cloth itself can be cleaned through continuous vibration.
  • the hanging hammer is connected with a U-shaped curved rod, and a U-shaped shape is formed by connecting three sections of the curved rod, one section of the curved rod, two sections of the curved rod, and three sections of the curved rod, with smooth rounded corners at the head and tail in a plane; It is connected with the hanging hammer and is perpendicular to the guide rod, parallel to the support rod and beyond the edge of the filter cloth; the second section of the curved rod is perpendicular to the first section of the curved rod; the third section of the curved rod is perpendicular to the second section of the curved rod, forming a U-shaped structure together.
  • the second section of the curved rod of the U-shaped curved rod should exceed the edge of the filter cloth so as not to affect the flatness of the filter cloth.
  • the length of the second section of the curved rod should be moderate, and the third section of the curved rod should not touch the filter plate.
  • a U-shaped curved rod extends from the hanging hammer, and the first section of the curved rod, the second section of the curved rod, and the third section of the curved rod are centered on the vertical center plane of the vertical direction of the filter plate, and the symmetrical U-shaped on both sides is closed into a ring.
  • the second section of the curved rod of the U-shaped curved rod is a circular arc section.
  • the shape of the U-shaped curved rod can be various, and it is determined according to the needs.
  • the shape of the three sections of the curved rod can be set into a flat fishbone shape, so that the contact surface with the filter cloth is larger. In this way, the force-bearing area of the filter cloth is larger, which is more conducive to the cleaning of the filter cloth.
  • the U-shaped curved rod can rotate around the axis line of a section of the curved rod relative to the hanging hammer, and the hanging hammer is provided with a drive motor connected to a section of the curved rod. Swing, the second section of the curved rod and the third section of the curved rod are driven by the first section of the curved rod to strike the filter cloth on both sides, and the swing angle is within the range limited by the inner side of the curved rod.
  • the driving motor here can be a cam motor, or a swinging motor around the axis, which can swing within the range limited by the inverted U-shaped groove structure that is weaker than the filter cloth, and the filter cloth that hits the two side walls of the U-shaped groove shall prevail. , to avoid hitting the inside of the curved link.
  • the U-shaped curved rod is a hollow pipe structure, the plane is in a vertical direction, the free end of the three sections of the curved rod is a closed end, and the two sides of the pipe wall are provided with micro-pores, which are connected to pressure-resistant hoses and pipes.
  • the cleaning liquid or mist can be sprayed from the micropores on both sides to cover the entire working area of the filter cloth on both sides.
  • the so-called working area is the contact part of the filter cloth used to filter the contact filter residue and filter cake.
  • the filter cloth is pulled out from the filter chamber. After the filter cake or filter residue is removed and after it is vibrated, there may be residues left in the filter. On the cloth, in order to further clean the filter cloth, it is rinsed with high-pressure water, cleaning liquid or a water-air mixture.
  • the U-shaped curved rod is a hollow pipe structure and is vertically oriented.
  • a drive box is provided between the end of the second section of the curved rod and the starting end of the third section of the curved rod, and the middle is hollow and penetrated. That is, the first section of the curved rod, the second section of the curved rod, the drive box and the third section of the curved rod are hollow and connected, and the liquid in the external hose can be connected from the first section of the curved rod and sprayed out from the third section of the curved rod.
  • the discharge holes are closed at the ends, and the motor in the drive box can drive the three sections of the curved rod to rotate within a limited angle, so that the high-pressure cleaning liquid in it scans back and forth and sprays the working areas of the filter cloths on both sides and covers it completely. With only one row of pores, the pressure of the cleaning fluid or water can be more concentrated, and the scanning and flushing effect is better.
  • the working area here refers to the part of the filter cloth that wraps the filter cake when the filter cake is squeezed, that is, the part of the filter cloth on both sides in the filter chamber. The working area referred to in the following description is similar.
  • the rod is a tubular structure with closed ends, and micropores are arranged on the inner side (the side of the filter cloth on the opposite side).
  • the cleaning fluid is sprayed to the working area of the filter cloth on the opposite side, and the micropores designed by the struts of the tubular structure on both sides can be sprayed at the same time or by time-sharing.
  • the entire working area of the filter cloth can also be flushed with high pressure.
  • the guide rod and the hanging hammer are separate bodies, the lower end of the guide rod is provided with a guide rod protruding head, the center of the hanging hammer is provided with a perforation, and a restriction groove is connected with the perforation, and the upper end of the guide rod can be Passing through the hanging hole, the protruding head at the lower end cooperates with the limiting groove to prevent the hanging hammer from falling out of the guide rod, and the hanging hammer can slide in the middle of the guide rod.
  • the shape of the perforation corresponds to the cross-sectional shape of the guide rod.
  • the convex head can be in the shape of a square, a sphere or a cone.
  • the shape of the limiting groove changes according to the shape of the convex head.
  • the guide rod can also be a cuboid or a cylinder.
  • the material of the rod can be made of stainless steel, and the hanging hammer can be made of impact-resistant, non-deformable and plastic materials such as polyoxysulfite-based polymer materials. This material does not produce magnetic shielding and can be insulated, so it is a good choice. Metal materials or other solid materials can be selected.
  • the guide rod and the hanging hammer are separate bodies, the lower end of the hanging hammer is provided with an installation groove, an electromagnet is installed in the installation groove, and the corresponding position of the rapping rod is provided with a permanent magnet, and the electromagnet is connected to the external control circuit.
  • the electric current in the changing direction can interact with the permanent magnet in the rapping rod, which can make the hanging hammer slide up and down along the guide rod, and knock the rapping rod at the same time.
  • the rapping rod drives the filter cloth to shake, and the percussion can quickly shake off the filter cake and large filter residue.
  • the electromagnet is supplied with a current of varying direction and its magnitude is adjusted, the hanging hammer is driven to slide on the guide rod, and the strength of hitting the rapping rod can be controlled.
  • the electromagnet is connected to the frequency of the current with changing direction, so that the hanging hammer can slide on the guide rod, and the frequency of hitting the rapping rod can be controlled.
  • the rapping rod can drive the filter cloth to vibrate, and the vibration can make the fine slag on the filter cloth fall off quickly, and the cleanliness of the filter cloth is further improved.
  • the guide rod is integrated with the hanging hammer, the lower end of the hanging hammer is provided with a motor slot, a vibration motor is installed in it, and the motor shaft protrudes downward to the motor shaft provided at the corresponding position of the rapping rod
  • the vibration motor is energized to drive the rapping rod to vibrate.
  • the rapping rod drives the filter cloth to vibrate, which can make the filter residue on it fall off quickly.
  • the vibration motor is a cam motor.
  • the cam is driven by a common motor, and the cam drives the rapping rod to vibrate.
  • the vibration motor is a high-frequency vibration motor.
  • the high-frequency vibration motor uses a high-speed rotating motor to drive the eccentric blocks at both ends to generate centrifugal distance and centrifugal force, and generate vibration to obtain excitation force.
  • the rapping rod will generate high-frequency resonance, and the filter residue will fall off more quickly. Its frequency is nearly 150HZ/S.
  • the vibration motor is an ultrasonic vibration motor.
  • the ultrasonic vibration motor can convert the electrical energy into the ultrasonic vibration of the elastic body, and the working frequency is above 20kHZ, so the rapping rod can drive the filter cloth to vibrate very quickly at this frequency to achieve the purpose of efficient cleaning.
  • the feeder is located at the center of the filter plate in the middle feeding method (the other feeding methods from the vertical direction of the filter plate are similar), the outer periphery of the filter cloth feeder is connected, and the feeder is in the middle of the feeder.
  • the feeding hole corresponds to and is fixed with the corresponding feeding hole on the diaphragm of the filter plate.
  • annular cloth On the side of the filter cloth around the feeder away from the diaphragm (the side close to the filter chamber), there is an annular cloth whose center is the same as the center of the feeder.
  • the cloth is tightly connected (the connection can be made by sewing method or thermoplastic welding gun method, etc.), the remaining part of the middle of the ring is a non-fitting area, and there are two annular cloth openings along the radial and horizontal direction of the annular cloth.
  • the size of the pull ring seat provided on the collar is suitable, so that the position of the pull ring seat is relatively stable.
  • the sleeve ring is placed in the non-fitting area of the annular cloth, and the two openings of the annular cloth on the sleeve are facing the pull ring seat respectively.
  • the pull wire sleeve hole in the middle part of the filter plate, and the pull wire sleeve holes on the opposite sides of the adjacent filter plates are connected with a pull rope.
  • the pull rope is straightened to drive the sleeve ring to move outward along the annular cloth, which can make The filter cloth is pulled from the filter chamber to the outside of the filter chamber.
  • the feeder In the middle feeding mode (the feeder is in the middle of the filter plate), since the filter cloth is fixed around the feeder, and the feeder is generally fixed on the rigid core plate, the feeder itself cannot be pushed or pulled, and the only What is pulled is the filter cloth around the feeder, so the above design is made.
  • the annular cloth and the filter cloth are made of the same material. In order to prevent the filter cloth from being blocked and affect the filtration, and at the same time to make the edge of the annular cloth fit better with the filter cloth, the same material is a good choice.
  • annular cloth openings There may be two or more uniformly distributed annular cloth openings along multiple radial directions of the annular cloth.
  • the annular cloth openings can also be established in other directions than the horizontal direction.
  • the inner diameter of the collar is the same as the outer diameter of the inner welt of the annular cloth.
  • the collar is basically fixed on the outer periphery of the welt in the annular cloth and is easy to reset.
  • the filter cloth can be slowly laid flat in the filter chamber, and the filter cloth is flattened to drive the annular cloth to be flattened so that the collar is reset.
  • the material of the collar, the pull ring and the pull ring seat is stainless steel. Because the filtrate may contain corrosive liquids, the use of stainless steel is both corrosion-resistant and strong and durable.
  • the shape of the collar is adapted to the shape of the annular cloth, and both are circular.
  • the shape of the collar and the shape of the annular cloth can also be a regular polygonal ring.
  • the cross-sectional shape of the collar is circular.
  • the cross-sectional shape of the collar is oval. Since it is in contact with the filter cloth and moves in the non-adhesive area of the annular cloth, in order to prevent the filter cloth from being scratched or the local force is too large, the collar cannot have sharp corners, and the corners are required to be smooth, so its cross section can be elliptical. Sleek shapes such as shapes or circles.
  • the pull ring is in the shape of a semi-circular arc, and the diameter is larger than the radial dimension of the collar. Since there are two annular cloth openings in the radial and horizontal direction, the pull-ring seat is also arranged in these two openings, so that the pull-ring is in a natural state (that is, in a non-working state, when the pull-ring is not pulled up by the pull-string) ) in a natural falling state, which will not affect the feeding.
  • the pulling rope is a temperature-resistant, corrosion-resistant rope or stainless steel wire.
  • the pull rope needs a material with good temperature resistance and corrosion resistance, because the filter cake needs to be heated in the filter chamber, and the filtrate may contain corrosive substances.
  • the annular radial width of the non-fitting area of the annular cloth is greater than the depth of the filter chamber. Because the pull ring is the same as the outer diameter of the inner welt of the annular cloth before being pulled, it contacts the outer welt of the cloth ring when it is pulled to the maximum extent, and the filter cloth moves to the middle of the sleeve ring. Therefore, if the filter cloth is to be pulled out of the filter chamber, the collar must be pulled out of the filter chamber, and the outward movement distance of the collar should be greater than the depth of the filter chamber. The width is greater than the depth of the filter chamber.
  • the bottom end of the filter cloth is fixed by a card slot provided at the bottom end of the filter plate frame and a matching card strip.
  • the upper and lower ends of the filter cloth can pass through the pre-set card grooves on the upper and lower ends of the filter plate frame, and then the filter cloth can be pressed into the card grooves and fixed by matching card strips. In this case, the filter cloth does not have to go around the strut.
  • the bottom end of the frame of the filter plate is provided with double rotating rods, including the main rotating rod at the bottom end and the secondary rotating rod at the bottom end.
  • the gap between the end secondary rotating rods passes through, and then falls down around the surface of the bottom secondary rotating rod, and its end is fixed on the filter cloth falling rod with the same width. In this way, the filter cloth at the bottom can also be pulled out from the feeder, and the filter residue can be further removed.
  • a ring-shaped cloth is provided on the side of the filter cloth around the feeder away from the diaphragm, the center of which is the same as the center of the feeder, and the inner welt of the annular cloth and the outer welt of the annular cloth are both close to the filter cloth.
  • the remaining part of the middle of the ring is the non-fitting area
  • the magnetic collar is placed in the non-fitting area of the annular cloth
  • the direction of its magnetic polarity is perpendicular to the direction of the filter plate
  • the corresponding position of the diaphragm is embedded in the shape, size and orientation of the corresponding ring. electromagnet.
  • the direction of the coil current in the electromagnet is controlled by the external control circuit so that when the polarity of the contact surface of the annular electromagnet and the magnetic collar is the same, the collar can be forced away from the diaphragm and drive the filter cloth to protrude from the filter chamber.
  • the direction of the coil current in the electromagnet changes periodically under the control of the external control circuit, and the polarity of the ring electromagnet changes accordingly, which can cause the filter cloth to vibrate. Shake off the filter residue further to make the filter cloth clean.
  • FIG. 1 is a schematic front view of one of the units of the filter cloth slag removal and self-cleaning mechanism of a filter press in an open state according to an embodiment.
  • FIG. 2 is an enlarged and transformed view of the structure of the A region in FIG. 1 .
  • FIG. 3 is a schematic diagram of an opening state of one of the units of the filter cloth slag removal and self-cleaning mechanism of a filter press (adding a guide rod and a hanging hammer) according to an embodiment.
  • Fig. 4 is a U-shaped curved rod added on the basis of Fig. 3;
  • Fig. 5 is the three-dimensional schematic diagram of the positional relationship between U-shaped curved rod and filter plate in Fig. 4;
  • Figure 6 is a schematic diagram of the state where the U-shaped curved rod in Figure 4 has a tubular structure and is sprayed with high-pressure cleaning fluid;
  • Fig. 7 is the U-shaped curved rod of Fig. 5 and a drive box is added;
  • Fig. 8 is a schematic diagram of spray cleaning filter cloth in which the support rod is a tubular structure with both ends closed;
  • FIG. 9 is a schematic perspective view of a male guide rod
  • Figure 10 is a schematic diagram of the three-dimensional structure of the hanging hammer matched with Figure 9;
  • Fig. 11 is a three-dimensional schematic diagram of the fitting assembly of the sliding rod and the hanging hammer in Figs. 9 and 10;
  • FIG. 12 is a schematic diagram of a three-dimensional structure of a vibration motor
  • Figure 13 is a schematic perspective view of the structure of the vibration motor assembled into the hanging hammer
  • FIG. 14 is a schematic diagram of the three-dimensional structure of the coordinated assembly of the motor and the rapping rod in the hanging hammer;
  • Figure 15 is a perspective view of the assembly structure of the collar and the pull ring
  • Figure 16 is a schematic front view of the structural relationship between the collar, the pull ring, the annular cloth, the filter cloth and the filter plate;
  • FIG. 17 is an enlarged schematic three-dimensional view of region B in FIG. 16;
  • Figure 18 is a partial enlarged view of the vertical section of the C region in Figure 17;
  • Figure 19 is a schematic diagram of the overall structure of the front of the filter cloth pulled out by a drawstring in the feeding process
  • Figure 20 is a three-dimensional schematic diagram of adjacent two filter plate structures
  • Figure 21 is a schematic three-dimensional schematic diagram of the overall unit structure in which the middle feed adopts the pull rope to pull out the filter cloth and the lower end of the filter cloth is connected with the falling rod;
  • Figure 22 is a schematic perspective view of the filter plate showing the relationship between the main rotating rod at the bottom end of the filter cloth and the secondary rotating rod at the bottom end, as well as the relationship between the collar and the annular electromagnet;
  • Fig. 23 is a three-dimensional schematic diagram of the structure of the filter plate unit acting by the collar and the annular electromagnet.
  • a filter press filter cloth slag removal and self-cleaning mechanism includes a filter press array composed of several unit filter plates 10 (5 units are shown in the figure, and the middle unit is in an open state), with adjacent two Each filter plate 10 is a unit, the middle surface of which is the center, and the two sides are symmetrical. Taking the center plane of the vertical filter plate 10 as the center, the two sides are also symmetrical. The two sides of the filter plate 10 are hinged through the side rotating shafts 11, and each curved link 29 is hinged by two curved rods 26 through the top rotating shaft 24, forming a push-pull structure in the lateral direction. See Figure 21 or 23 for the three-dimensional structure.
  • a support 27 is provided on the inner side of the bent rod 26 , and a support rod 25 is connected between the two supports 27 on the same side.
  • the two ends of the filter cloth 41 are respectively fixed on the feeders 80 of the adjacent opposite filter plates 10 and extend downward to the bottom ends of the respective filter plates 10 respectively. Adjacent to the outside of the struts 25 (the three-dimensional state of the struts 25 can refer to FIG.
  • the filter cloth 41 when the filter plate 10 is relatively moved to a limited tension, the filter cloth 41 can be pulled and torn by the two struts 25, that is, from the fixed place to the The filter cloth section at the turning point and between the two turning points can be pulled to be straight; the middle of the top surface of the filter cloth 41 is fixedly provided with a filter cloth rapping rod 51 in the transverse direction of the filter cloth 41, and the length is consistent with the width of the filter cloth 41, Under the action of its gravity, the filter cloth 41 can be tightened, and the filter cloth 41 forms an inverted U-shaped groove structure as a whole.
  • the order in which the filter cloth 41 is tensioned is from the bottom end of the left filter plate 10 to the outer edge of the left support rod 25, from the outer edge of the left support rod 25 to the bottom surface of the rapping rod 51, and from the rapping
  • the bottom surface of the rod 51 is to the outer edge of the right support rod 25, and then to the bottom end of the right filter plate 10 (for the three-dimensional structure of the unit, please refer to Figure 21), such an inverted U-shaped groove structure makes the filter cake in it. Or the filter residue can fall down due to its own gravity.
  • the filter cloth 41 can cover the entire side of the filter plate 10, including the filtrate holes 13 therein.
  • FIG. 3 One of the examples, as shown in FIG. 3, is provided with a top rod 28 and the opposite two curved connecting rods 29 are hinged to the top rotating shaft 24, the middle of the top rod 28 is provided with a vertically downward guide rod 31, and the lower end of the guide rod 31 is provided.
  • a hanging hammer 32 when the adjacent filter plate 10 is suddenly pulled apart, the filter cloth rapping rod 51 will have the inertia of moving upward, so that the hanging hammer 32 can collide with the filter cloth rapping rod 51, when the filter plate 10 When the relative movement reaches the limited tension, the hanging hammer 32 and the rapping rod 51 can be in contact with each other. It can also be seen from FIG.
  • the guide rod 31 passes through the opening on the ejector rod 28 and is connected with bolts 18.
  • the bolts 18 can fix the guide rod 31 and adjust the length of the guide rod 31 extending downward.
  • the three-dimensional state is shown in Figure 21.
  • the support 27 is fixed on the lower end of the reed inside the curved rod 26, and the upper end of the reed is fixed on the inside of the curved rod 26, so that the support 27 can be rotated under the action of external force.
  • the curved rod 26 can be composed of two parts.
  • the straight rod 21 and the curved rod 22 are hinged through the curved rod rotating shaft 23 .
  • the straight rod 21 and the curved rod 22 are also provided with an anti-arc rod 22 inside. Overturned stop. (The stopper is not shown in the picture)
  • the side of the plate frame of the filter plate 10 is provided with a rotation limit pin 12 of the curved rod 26 to limit the maximum opening angle of the curved rod 29 .
  • the limit pins 12 are arranged on the filter plates on both sides of the curved rod 26 .
  • the hanging hammer 32 is set in the shape of a rod, the direction is the same as that of the filter cloth rapping rod 51, and the length is corresponding (not shown in the figure).
  • the lower end of the pendant 32 is embedded with a permanent magnet with a polarity along the vertical direction, and the corresponding position of the rapping rod 51 is also provided with permanent magnets with opposite polarities, and their contact surfaces have the same polarity and repel each other (Fig. not shown).
  • the lower end of the pendant 32 is provided with an electromagnet whose polarity is in the vertical direction, and the corresponding position of the rapping rod 51 is provided with a permanent magnet, and the coil of the electromagnet is passed under the control of an external control circuit to change the direction of the current,
  • the rapping rod 51 can be vibrated (the electromagnet and the permanent magnet are not shown). Refer to FIG. 3 for the frontal state.
  • the hanging hammer 32 is connected to a U-shaped curved rod 60, which is connected by a smooth rounded corner of the first section 61 of the curved rod, the second section of the curved rod 62, and the third section of the curved rod 63.
  • the first section 61 of the curved rod is connected to the hanging hammer 32 and is perpendicular to the guide rod 31, parallel to the support rod 25, and extends outward beyond the edge of the filter cloth 41; the second section of the curved rod 62 is perpendicular to the first section of the curved rod 61; the curved rod
  • the third section 63 is perpendicular to the second section 62 of the curved rod, forming a U-shaped structure together.
  • 5 is a perspective view of the relative positional relationship between the U-shaped curved rod 60 and the filter plate 10. It can be seen from the figure that the third section 63 of the curved rod is longer than the first section 61 of the curved rod, and its free end is flush with the side close to the filter plate 10 .
  • a curved rod U-shaped curved rod 60 is extended from the hanging hammer 32.
  • the first section of the curved rod 61, the second section of the curved rod 62, and the third section of the curved rod 63 are centered on the vertical center plane of the vertical direction of the filter plate 10.
  • a symmetrical U-shape is closed into a ring. See Figure 5 (closed state not shown).
  • the second segment 62 of the U-shaped curved bar 60 is an arc-shaped segment. (not shown in the picture)
  • the U-shaped curved rod 60 can rotate around the axis line of a section 61 of the curved rod relative to the hanging hammer 32.
  • the hanging hammer 32 is provided with a drive motor connected to the section 61 of the curved rod.
  • the 61 swings back and forth around its axis, and the third section 63 of the curved rod is driven by the first section 61 of the curved rod and knocks the filter cloth 41 on both sides.
  • the U-shaped curved rod 60 is a hollow pipe structure, the free end of the third section 63 of the curved rod is a closed end, and micro-pores are arranged on both sides of the pipe wall to connect external pressure-resistant hoses and pipes.
  • the cleaning liquid 70 mist can be sprayed from the micropores on both sides to the entire working area of the filter cloth 41 on both sides.
  • the U-shaped curved rod 60 is a hollow pipe structure and is vertically oriented, and a drive box 33 is provided between the end of the second section 62 of the curved rod and the starting end of the third section 63 of the curved rod, The middle is hollow through, and the third section 63 of the curved rod is provided with a row of pores, the ends of which are closed.
  • the motor in the drive box 33 can drive the third section of the curved rod 63 to rotate within a limited angle, so that the high-pressure cleaning fluid 70 in it goes back and forth. Scan and spray to the work area of the filter cloth 41 on both sides.
  • the strut 25 is a tubular structure with closed ends, and micro-holes are arranged on the inside.
  • the micro-holes designed by the struts 25 of the tubular structure on both sides can be sprayed at the same time or the cleaning liquid 70 can be sprayed at different times.
  • the guide rod 31 and the hanging hammer 32 are separate bodies, the lower end of the guide rod 31 is provided with a guide rod protrusion 311 , the center of the hanging hammer 32 is provided with a through hole 321 , and the through hole 321
  • the upper end of the guide rod 31 can pass through the hanging hole 321, and the convex head of the lower end cooperates with the restriction groove 322 to prevent the hanging hammer 32 from coming out of the guide rod 31, and the hanging hammer 32 It can slide in the middle of the guide rod 31 .
  • the guide rod 31 and the hanging hammer 32 are separate bodies, the lower end of the hanging hammer 32 is provided with an installation groove 323, an electromagnet is installed in the installation groove 323, and a permanent magnet is installed at the corresponding position of the rapping rod 51, and the electromagnetic field is controlled by an external control circuit.
  • the iron passing through the current of changing direction can make the hanging hammer 32 slide on the guide rod 31 and strike the rapping rod 51 at the same time.
  • the electromagnet under the control of an external control circuit, the electromagnet is supplied with a current of varying direction and its magnitude is adjusted, so that the pendant 32 can slide on the guide rod 31 , and the force of striking the rapping rod 51 can be controlled.
  • the electromagnet under the control of the external control circuit, the electromagnet is supplied with the frequency of the current with changing direction, so that the pendant 32 can slide on the guide rod 31 , and the frequency of hitting the rapping rod 51 can be controlled.
  • the guide rod 31 is connected with the hanging hammer 32 as a whole, and the lower end of the hanging hammer 32 is provided with a motor slot 90, which is provided with a vibration motor 91, and the motor shaft 92 protrudes downward to the vibration level.
  • the vibration motor 91 is electrified to drive the rapping rod 51 to vibrate.
  • the vibration motor 91 is a cam motor, or the vibration motor 91 is a high-frequency vibration motor, or the vibration motor 91 is an ultrasonic vibration motor.
  • the feeder 80 is located at the center of the filter plate 10 in the middle feeding mode, the outer periphery of the feeder 80 is connected, and the feeding hole of the feeder 80 is connected to the filter plate 10.
  • the corresponding feeding holes on the diaphragm 84 are corresponding and fixed.
  • the two filter plates 10 are closed, the two feeders 80 on them are butted against each other, and the feeding groove on the feeder 80 is located in the position where the filter cloth 41 is far from the diaphragm 84.
  • the material can enter the filter chamber 85 formed by the filter cloth 41 and the frame of the filter plate 10 from the groove on the feeder 80 , and the filtrate enters the filtrate port 13 .
  • An annular cloth 86 is provided on the side of the filter cloth 41 at the periphery of the feeder 80 away from the diaphragm 84, and its center is on the axis of the feeder 80. 41 are closely connected, and the remaining part of the middle of the ring is a non-fitting area, and two annular cloth openings 87 are arranged along the radial and horizontal direction of the annular cloth 86; a metal collar 88 is placed in the non-fitting area of the annular cloth 86, and the collar
  • the two openings of the annular cloth 86 on the 88 are respectively provided with a pull ring seat 89, the two ends of the pull ring 82 provided are hinged on the holes of the pull ring seat 89, and the middle part of the pull ring 82 is provided with a pull wire sleeve hole 83, the pull wire sleeve holes 83 on the opposite sides of the adjacent filter plates 10 are connected with the pull rope 81.
  • the pull rope 81 When the filter plate
  • the annular cloth 86 and the filter cloth 41 are made of the same material.
  • more than two annular cloth openings 87 are provided along the radial and horizontal directions of the annular cloth 86 .
  • the inner diameter of the collar 88 is the same as the outer diameter of the inner welt 861 of the annular cloth.
  • the material of the collar 88 , the pull ring 82 and the base of the pull ring 82 is stainless steel.
  • the shape of the collar 88 is adapted to the shape of the annular cloth 86, both being circular.
  • the shape of the collar 88 and the shape of the annular cloth 86 are regular polygonal rings.
  • the cross-sectional shape of the collar 88 is circular.
  • the cross-sectional shape of the collar 88 is oval.
  • the pull ring 82 is in the shape of a semi-circular arc, and its diameter is larger than the radial dimension of the collar 88 .
  • the pull cord 81 is a temperature-resistant and corrosion-resistant elastic cord or stainless steel wire.
  • the annular width of the non-conforming area of the annular cloth 86 is greater than the depth of the filter chamber 85 .
  • the bottom end of the filter cloth 41 is fixed with the matching clip through the clip slot provided at the bottom end of the frame of the filter plate 10 .
  • the bottom end of the frame of the filter plate 10 is provided with double rotating rods, including the main rotating rod 14 at the bottom end, the secondary rotating rod 15 at the bottom end, and the filter cloth 41 rotates from the main rotating rod 14 at the bottom end.
  • the surface bypasses and passes through the gap between the bottom main rotating rod 14 and the bottom secondary rotating rod 15, and then falls down around the surface of the bottom secondary rotating rod 15, and its end is fixed on the filter cloth falling rod with the same width.
  • the filter cloth drop bar 16 allows the filter cloth 41 to be pulled clear.
  • the pull rope 81, the pull ring seat 89 and the pull ring 82 are removed, as shown in FIGS. 22 and 23, and a ring cloth 86 is provided on the side of the filter cloth 41 at the periphery of the feeder 80 away from the diaphragm 84, the center of which is On the axis of the feeder 80 , the inner welt 861 of the annular cloth and the outer welt 862 of the annular cloth are tightly connected with the filter cloth 41 , and the remaining part in the middle of the ring is the non-adhering area, and the magnetic collar 88 is placed on the non-fitting area of the annular cloth 86 .
  • its polarity direction is perpendicular to the direction of the filter plate 10 , and the corresponding position of the diaphragm 84 is embedded in the corresponding annular electromagnet 17 in shape, size and position.
  • the direction of the coil current in the ring electromagnet 17 is controlled by the external control circuit, so that when the polarity of the contact surface of the ring electromagnet 17 and the magnetic collar 88 is the same, the collar 88 can be forced away from the diaphragm 84 and drive the filter cloth 41.
  • the filter chamber 85 protrudes.
  • the direction of the coil current in the electromagnet is periodically changed under the control of the external control circuit, and the polarity of the ring electromagnet 17 changes accordingly, which can cause the filter cloth 41 to vibrate.
  • some of them can be used alone, they can be selected according to actual needs, or they can be used in combination with each other, or a plurality of them can be used in combination.
  • the invention can be widely used in the pressing and filtering industry, and especially plays a very important role in the sludge treatment process in the environmental protection industry.

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

Abstract

一种压滤机滤布脱渣自洁机构,垂直于相邻弯杆(26)铰接面的顶杆(28)的中间处设有垂直向下的导杆(31),导杆的(31)下端设有吊锤(32)。滤布(41)两端分别固定在相邻滤板(10)的底端,当滤板(10)相对移动分开时,滤布(41)可被撑杆拉动扯清。压滤阵列在外力的拉动下,各滤板(10)相互张开,相邻弯杆(26)也由竖直方向逐渐张开,竖直边的夹角变大,滤布(41)上还设有振打杆(51)。

Description

压滤机滤布脱渣自洁机构 技术领域
本发明涉及压滤设备领域,尤其涉及一种压滤机滤布脱渣自洁机构。
背景技术
压滤机利用一种特殊的过滤介质,对对象施加一定的压力,使得液体渗析出来的一种机械设备,是一种常用的固液分离设备。在十八世纪初就应用于化工生产,至今仍广泛应用于化工、制药、冶金、染料、食品、酿造、陶瓷以及环保等行业。其中滤板是其起主要作用的部件,两块相邻滤板之间形成容纳压滤对象的空间——滤室,滤板上还设有通入压滤对象和引出压滤对象内的液体的通孔,或称进料孔,压滤完成后滤室中形成滤饼。当完成这个过程后需要将滤饼从中分离出去并使滤布变得更干净。
技术问题
目前的技术基本靠滤饼自身的重力的坠落或靠敲打等方式,有的靠外接冲水设备来冲洗,还有人工刮泥、清刷,外加气动、供水、击打等多种机械设施,对于现有的击打方式会使得整个过滤单元承受冲击,不仅效果差,容易使其构件损坏,且大部分结构复杂、效率低、成本高,滤布、滤板的使用寿命短。
技术解决方案
为解决现有技术的不足,有必要提供一种压滤机滤布脱渣自洁机构,其应用于压滤机上,一种压滤机滤布脱渣自洁机构,包括若干单元滤板构成的压滤阵列,以相邻两个滤板为一单元,其中间分界面为中心,两侧对称,多幅弯连杆下端相互铰接并与滤板两侧通过侧转轴铰接,每幅弯连杆由两条弯杆通过顶转轴铰接,横向方向形成推拉结构。下面以一个单元的结构来描述。
所述弯杆的内侧设有支座,同一侧的两个支座之间连接有支杆;所述滤布两端分别固定在相邻的相对面滤板间的进料器上并分别向下延伸至各自滤板底端,中间段向上平齐穿过弯连杆内侧的两根相邻支杆的外侧,当滤板相对移动至限定张度时,从进料器固定处至支杆转折处以及两支杆转折处之间滤布段处于平直,滤布可被两根支杆拉动扯清,即从固定处至转折处以及两转折处之间滤布段可以被拉至平直;所述滤布顶面中间处固定设有与滤布横向方向的滤布振打杆,长度与滤布宽度一致,在其重力的作用下,滤布可被拉紧,滤布总体形成倒U形槽结构。为了整个压滤阵列推拉灵活,侧转轴与顶转轴可设内置轴承,弯连杆、支杆及振打杆均采用金属材料如不锈钢等材料,其中振打杆的重量要适中,根据实际需要而设定,其内可采用空心材质,或管状结构,截面形状可以是长方形、方形或椭圆形等。而其固定方式,可以穿进以滤布形成的倒U形槽的顶端两侧预设的大小适中的布兜内,也可以用其它方式固定振打杆在滤布上,当滤板相对移动至限定张度时,一般是指其最大张开角度,弯连杆的限定张开角度由滤板侧面定位销限定,或由外部机械运行总程确定,当弯连杆达到最大张开角度时,由于振打杆在重力的作用下下坠,滤布被拉清,这样,在压滤过程中积聚在滤室中的滤饼或滤渣随着滤布一起被拉至滤室外而往下坠落,从而达到滤饼或滤渣与滤布分离的目的,如果滤板被拉开有一定速度,振打杆会有向上冲的贯性,到达一定高度,而又在其本身的重力作用下往下坠,这样反复来回几次,能使粘附在滤布上余下的细微滤渣被抖落,这适合于粘性不是太好,或成颗粒状的滤渣情形。
进一步地,设有顶杆与所述的相对的两弯连杆顶转轴铰接,所述顶杆的中间处设有垂直向下的导杆,导杆的下端设有吊锤,当相邻滤板突然被拉开时,所述滤布振打杆会有向上移动的惯性,可使所述吊锤与滤布振打杆相撞击,当滤板相对移动至限定张度时,吊锤与振打杆可相互接触。这里的顶杆是连接在滤板相对侧面上的弯连杆的顶端,连接在两个相对的顶转轴,当相邻的两块滤板被拉开时,振打杆在贯性的作用下往上撞击吊锤,带动滤布强烈振动,粘性稍强的滤饼如泥饼可以被振落。
进一步地,所述导杆穿过顶杆上设的开孔并用螺栓连接,螺栓可固定导杆并可以调节导杆下伸的长度。导杆固定在顶杆上,可以调整其下伸的长度,更适合于消除实际生产过程中由于生产、设计、安装和场地等带来的误差。
进一步地,设有两套以上所述导杆与吊锤,均匀分布在顶杆上,并以滤板竖直方向的垂直滤板正面的中心面为中心对称设置,一根顶杆上可以设置多套导杆和吊锤,一般在三套以内,以均匀分摊相互撞击的冲力。
进一步地,所述支座固定在弯杆内侧的簧片下端,簧片上端固定在弯杆内侧,可以使支座在外力作用下产生转动。支座设在弹簧片上,弹簧片可以正向或反向转动一个小的角度,首先它能使得在吊锤与振打杆相撞过程中作用在滤布上的力得到缓冲,保护滤布,另外使滤布更容易产生振动。
进一步地,所述弯杆可由两部分构成,直杆与弧形杆通过弯杆转轴铰接而成,直杆与弧形杆内侧还设有防弧形杆向内侧过度转动的可调位置挡块或限位螺钉。弯杆由直杆和弧形杆构成,这样有利于总体材料尺寸构成受限的情况下,能节约材料,提升顶杆的高度或弯连杆的张开角度,并可消除设计上带来的误差。
所述滤板的板框侧面设有弯杆转动限位销,限定弯连杆的最大张开角度。限位销设置在弯连杆下端合适位置,根据生产实验测算确定所需尺寸。
进一步地,所述吊锤设成杆状,方向与所述滤布振打杆一致,长度相应。吊锤设成长条形杆状,使得振打杆在被击打时受力更为均匀。
进一步地,所述吊锤下端嵌入极性沿垂直方向的永磁体,所述振打杆相应位置处亦嵌入有极性相反的永磁体,它们的接触面的极性相同,互相排斥。当两个同性磁极接近时会产生排斥力,在排斥力足够大时,可以消除吊锤与振打杆相撞所带来的冲击与噪音,同时可以增加滤布随着振打杆上、下抖动的次数(相当于设有弹簧一样)。在制造过程中,永磁体可以采用嵌入方式,使得永磁体相对吊锤下端表面或振打杆上端表面有一定凹陷距离,防止永磁体直接受到撞击而受损。
进一步地,所述吊锤下端嵌入有极性沿垂直方向的电磁铁,所述振打杆相应位置处嵌入有永磁体,在外界控制电路控制下电磁铁的线圈内通以变化方向的电流,可使振打杆产生振动或击打吊锤。随着电磁铁极性的变化,吊锤与振打杆时而吸合时而排斥,使得吊锤与振打杆在近距离范围内敲击,滤布也随之产生强烈振动,敲击的距离范围由滤布的弹性,支座下面的弹簧片的弹性以及吊锤内电磁铁内线圈电流的大小所决定,而振动频率由电磁铁的磁极改变的频率所决定。在滤饼粘性大的情形下,采用这种方式较为有利于其脱落以及通过持续的振动,可以清洁滤布本身。
另一方式,所述吊锤上连接U形曲杆,由曲杆一段 、曲杆二段 、曲杆三段共三段首尾平滑圆角相接在一个平面内构成一个U字形;曲杆一段与吊锤相连并与导杆垂直,与支杆平行,向外超出滤布的边缘;曲杆二段与曲杆一段垂直;曲杆三段与曲杆二段垂直,共同形成U形结构。U型曲杆的曲杆二段应超出滤布的边缘以免影响滤布的平整度。另外曲杆二段的长度应适中,不能使曲杆三段触碰到滤板。
或者,所述吊锤上伸出一根U形曲杆,曲杆一段 、曲杆二段 、曲杆三段以滤板竖直方向的垂直中心面为中心,两边对称的U形闭合成环形。相当于由曲杆一段 、曲杆二段 、曲杆三段、曲杆二段及曲杆一段首尾相接形成口字形的闭合形状,这样有利导杆两边的平衡。
进一步地,所述的U形曲杆的曲杆二段为圆弧形段。U形曲杆的形状可以有多种,根据需要而决定,特别是曲杆三段的形状,可以设成扁平的鱼骨状,以便与滤布接触时接触面更大。这样敲打滤布的受力面积更大,更有利于滤布的清洁。
进一步地,所述U形曲杆相对吊锤可绕曲杆一段轴心线转动,吊锤内设有与曲杆一段相连的驱动电机,驱动电机启动后,可使曲杆一段绕其轴线来回摆动,通过曲杆一段带动曲杆二段及曲杆三段敲击两边的滤布,其摆动角度以弯杆内侧限定的范围内。这里的驱动电机可以是凸轮电机,也可以是绕轴摆动电机,在能完成弱大于滤布的倒U形槽结构限定的范围内摆动,以击打U形槽两侧壁的滤布为准,避免击打到弯连杆的内侧。
另一方式,所述U形曲杆为中空的管道结构,所在平面处于垂直方向,曲杆三段的自由端为封闭端,管壁的两侧布设有微孔隙,外接耐压软管与管道相通,当外接耐压软管内通以清洗液或雾气,该清洗液或雾气可从两侧的微孔隙喷射覆盖到两侧的滤布的整个工作区上。所谓的工作区也就是滤布用来过滤接触滤渣、滤饼的接触部分,滤布从滤室中被拉出,在脱完滤饼或滤渣以及在对其振动后可能还有残渣留在滤布上,为了进一步将滤布清洗干净,通过高压水、清洗液或水气混合物对其冲洗。
另一种方式,所述U形曲杆为中空的管道结构并为垂直处向,曲杆二段的未端与曲杆三段起始端之间设有驱动盒,中间均为中空贯通,也就是曲杆一段、曲杆二段、驱动盒及曲杆三段内部中空并相通,外接软管中的液体可从曲杆一段接入从曲杆三段喷出,曲杆三段上设有一排孔隙,其未端封闭,驱动盒内设电机可带动曲杆三段在限定角度内转动,使其内的高压清洗液来回扫描喷射到两侧滤布的工作区并对其完整覆盖。只设有一排孔隙可使得清洗液或水的压力更集中,扫描冲洗效果更好。这里的工作区指的是挤压滤饼时,包裹滤饼的那部分滤布,也就是两侧在滤室中的滤布部分,下面叙述中所指的工作区类同。
另一种方式,不用U形曲杆来冲洗,所述支杆为两端封闭的管状结构,内侧(相对面的滤布一侧)上布设有微孔,当外接软管输入清洗液可从微孔中将清洗液喷射到相对面的滤布工作区,两边管状结构的支杆设计的微孔可同时穿插喷射或分时喷射清洗液。同样能对滤布整个工作区进行高压冲洗。
另一种方式,所述导杆与吊锤为分离体,导杆的下端设有导杆凸头,吊锤的中心设有穿孔,与穿孔相连的还设有限制槽,导杆的上端可从吊垂的穿孔中穿过,其下端的凸头与限制槽配合,阻止吊锤从导杆上脱出,吊锤可在导杆中部滑动。穿孔的形状与导杆的截面形状相应,所述凸头可以是方形、球形或锥形等形状,限制槽的形状根据凸头形状相应变化,导杆也可为长方体、圆柱体等形状,导杆的材料可以用不锈钢,吊锤可以用耐撞击、不易变形及可塑性材料如聚氧亚钾基等聚合物材料,这种材料还不产生磁屏蔽且能绝缘,是良好的选材,吊锤也可以选用金属材料或其它固体材料。
进一步地,所述导杆与吊锤为分离体,吊锤下端设有安装槽,安装槽内装设电磁铁,所述振打杆相应位置设有永磁体,在外界控制电路控制下电磁铁通以变化方向的电流,其产生的电磁场可与振打杆内永磁体相互作用,可使吊锤沿导杆上、下滑动,同时敲击振打杆。振打杆带动滤布抖动,敲击能使其中的滤饼、大块滤渣快速抖落下来。
进一步地,在外界控制电路控制下所述电磁铁通以变化方向的电流并调节其大小,驱动吊锤在导杆上滑动,并可控制击打振打杆的力度。
进一步地,在外界控制电路控制下所述电磁铁通以变化方向的电流的频率,可使吊锤在导杆上滑动,可控制击打振打杆的频率。能使振打杆带动滤布振动,振动能使滤布上的细渣快速掉落,滤布的清洁度进一步提高。
另一种方式,所述导杆与吊锤连为一体,吊锤下端设有电机槽,其内设有振动电机,电机轴向下凸出至所述振打杆相应位置设有的电机轴适配槽内,在外部电路控制下,振动电机通电带动振打杆振动。振打杆带动滤布振动,能使其上的滤渣快速脱落。
具体地,所述振动电机为凸轮电机。由普通电机带动凸轮,凸轮带动振打杆产生振动。
进一步地,所述振动电机为高频振动电机。高频振动电机是利用高速旋转的电机带动两端偏心块产生离心距离、离心力,产生振动得到激振力。这样振打杆就会产生高频共振,使滤渣更快速脱落。其频率近150HZ/S。
进一步地,所述振动电机为超声波振动电机。超声波振动电机能把电能转换为弹性体的超声振动,工作频率在20kHZ以上,故能使振打杆以此频率带动滤布极快速抖动从而达到高效清洁目的。
另一种方式,所述进料器位于滤板的中央处的中进料方式(其它从滤板垂直面方向进料方式类同),滤布进料器的外周边连接,进料器中进料孔与滤板的隔膜上相应的进料孔对应并固定,当两块滤板合拢,其上的两个进料器相互对接,进料器上的进料槽处于滤布远离隔膜的一面,物料可从进料器上的进料槽进入由滤布及滤板边框所围形成的滤室中。在所述进料器的周边的滤布远离隔膜的一面(靠近滤室的一面)设有一环形布,其中心与进料器中心相同,环形布内贴边与环形布外贴边均与滤布紧密连接(连接可以通缝纫方式或热塑焊枪方式等),环中间剩余部分为非贴合区,沿环形布的径向水平方向设有两个环形布开口,此开口大小与设有的套环上设有的拉环座的尺寸相宜,使得拉环座的位置相对稳定。套环置于环形布非贴合区内,套环上位于环形布的两个开口处分别正对拉环座,设有的拉环的两端铰接在拉环座的孔位上,拉环的中间部位还设有拉线套孔,相邻滤板的相对面的拉线套孔用拉绳相连,在滤板逐渐张开时,拉绳被拉直带动套环沿环形布向外移动,并可使得滤布从滤室中被拉至滤室外。中进料方式(进料器在滤板中间),由于滤布固定在进料器周围,而进料器一般情况下固定在刚性芯板上,进料器本身不能被推动或拉动,唯一能被拉动的是进料器周围的滤布,因此作以上设计。
进一步地,所述环形布与滤布为同一种材料。为了防止滤布被遮挡影响过滤,同时使环形布边缘与滤布更好地贴合,其材料相同为好的选择。
沿所述环形布的径向多个方向可设有两个以上均匀分布的环形布开口。除了水平方向其它方向也可以设立环形布开口。
进一步地,所述套环的内径与环形布内贴边的外径尺寸一致。这样在滤布与隔膜贴合时,套环基本固定在环形布内贴边的外周而易复位,工作过程中由于从进料器中的进料口进入物料也即压滤对象至滤布工作面,在其不断增加冲击情况下,能慢慢使得滤布平铺在滤室之中,滤布被拉平带动环形布被拉平进而使得套环复位。
进一步地,所述套环、拉环及拉环座材料为不锈钢。因为滤液可能含有腐蚀性液体,使用不锈钢材既有耐腐蚀性又很坚固,经久耐用。
进一步地,所述套环的形状与环形布的形状相适配,两者均为圆环形。所述套环的形状与环形布的形状也可以是正多边形环。所述套环的截面形状为圆形。
进一步地,所述套环的截面形状为椭圆形。由于它与滤布接触并在环形布的非粘贴区内运动,为防止滤布被划破或局部受力过大,套环不能有锐角边,要求边角圆滑,因此其横截面可采用椭圆形或圆形等圆滑形状。
进一步地,所述拉环为半圆弧形,直径比套环径向尺寸大。由于径向水平方向设有两个环形布开口,所述拉环座也设置在这两个开口内,使得拉环在自然状态下(即非工作状态下,拉环没被拉绳拉起时)处于自然下坠状态,这样不会影响进料。
进一步地,所述拉绳为耐温、耐腐蚀绳子或不锈钢丝。拉绳需要耐温、耐腐蚀性好的材料,因为滤室中需要对滤饼加热,另外滤液可能含有腐蚀性物质。
进一步地,所述环形布的非贴合区的环形的径向宽度大于滤室的深度。由于拉环在被拉动前与环形布内贴边外径一致,拉到最大限度时与布环外贴边接触,滤布往套环中间移动。因此要使滤布被拉至滤室外,也就要使套环被拉至滤室外,套环向外移动距离应大于滤室的深度,因此要求环形布的非贴合区的环形的径向宽度大于滤室的深度。
一般地,所述滤布的底端通过滤板框底端所设的卡槽与相适配的卡条来固定。滤布的上、下端均可通过在滤板框上、下端预设的卡槽,再通过相适配的卡条将其卡压到卡槽中固定。这种情况下,滤布不必绕过支杆。
进一步地,所述滤板的框底端设有双转杆,包括底端主转杆、底端次转杆,滤布从底端主转杆表面绕过并从底端主转杆与底端次转杆之间的间隙穿过,再绕底端次转杆表面往下坠,其未端固定在与其宽度一致的滤布坠杆上。这样使底端的滤布也能够从进料器处被拉清,进一步使滤渣脱离干净。
另一方式,在所述进料器的周边的滤布远离隔膜的一面设有一环形布,其中心与进料器的中心相同,环形布内贴边与环形布外贴边均与滤布紧密连接,环中间剩余部分为非贴合区,磁性套环置于环形布非贴合区内,其磁极性方向垂直于滤板方向,所述隔膜相应位置嵌入形状、大小及处向相应的环形电磁铁。这种情形下,不需要拉环及拉绳,在电磁力的推动下,即可将滤布内的滤饼或滤渣推出滤室,从而达到滤饼脱离滤布的目的。
所述电磁铁中线圈电流的方向,在外部控制电路控制下,使得环形电磁铁与磁性套环接触面极性相同时,可迫使套环远离隔膜并带动滤布凸出滤室。
进一步地,所述电磁铁中线圈电流的方向,在外部控制电路控制下,发生周期性改变,环形电磁铁的极性跟随改变,可使滤布产生抖动。进一步将滤渣抖落,使滤布清洁。
有益效果
可以使其快速将滤饼分离出去并使得滤布变得更为干净,省去大量不必要的机械或人力,脱渣速度快,效率高。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为一种实施方式的压滤机滤布脱渣自洁机构其中之一单元开启状态正面示意图。
图2为图1中A区域结构放大变换图。
图3为一种实施方式的压滤机滤布脱渣自洁机构(增设导杆与吊锤)其中之一单元开启状态示意图。
图4为图3基础上增设了U形曲杆;
图5为图4中U形曲杆与滤板位置关系的立体示意图;
图6为图4中U形曲杆为管状结构,通以高压清洗液喷出状态示意图;
图7为图5的U型曲杆并增设了驱动盒;
图8为中的支杆为两端封闭的管状结构喷淋清洗滤布示意图;
图9为凸头导杆示立体示意图;
图10与图9相配合吊锤立体结构示意图;
图11为图9与图10中滑杆与吊锤配合装配立体示意图;
图12为振动电机立体结构示意图;
图13为振动电机装配入吊锤中结构立体示意图;
图14为吊锤中的电机与振打杆配合装配立体结构示意图;
图15为套环与拉环装配结构立体示意图;
图16为套环、拉环、环形布、滤布及滤板结构关系正面示意图;
图17为图16中B区域立体放大示意图;
图18为图17中C区域垂直切面局部放大图;
图19为中进料采用拉绳拉出滤布正面总体结构示意图;
图20为相邻两滤板结构立体示意图;
图21为中进料采用拉绳拉出滤布结合坠杆连接滤布下端的总体单元结构立体示意图;
图22为展示滤布底端主转杆与底端次转杆以及套环与环形电磁铁作用关系的滤板立体示意图;
图23为套环与环形电磁铁作用滤板单元结构立体示意图。
图中各部件名称:滤板10、侧转轴11、限位销12、滤液口13、底端主转杆14、底端次转杆15、滤布坠杆16、环形电磁铁17、螺栓18、 直杆21、弧形杆22、弯杆转轴23、顶转轴24、支杆25 、弯杆26、 支座27、顶杆28、弯连杆29、导杆31、导杆凸头311、吊锤32、穿孔321、限制槽322、安装槽323、驱动盒33、 滤布41、  振打杆51、电机轴适配槽52、U形曲杆60、曲杆一段61、曲杆二段62、曲杆三段63、清洗液70、进料器80、拉绳81、拉环82、拉线套孔83、隔膜84、滤室85、环形布86、环形布内贴边861、环形布外贴边862、环形布开口87、套环88、拉环座89、电机槽90、振动电机91、电机轴92。
本发明的最佳实施方式
如图1所示,一种压滤机滤布脱渣自洁机构,包括若干单元滤板10构成的压滤阵列(图中画有5个单元,中间单元为开启状态),以相邻两个滤板10为一单元,其中间面为中心,两侧对称,以竖直方向垂直滤板10的中心面为中心,其两侧也是对称的,多幅弯连杆29下端相互铰接并与滤板10两侧通过侧转轴11铰接,每幅弯连杆29由两条弯杆26通过顶转轴24铰接,横向方向形成推拉结构。立体结构参见图21或23。
见图1或图2,弯杆26的内侧设有支座27,同一侧的两个支座27之间连接有支杆25。滤布41两端分别固定在相邻相对面滤板10的进料器80上并分别向下延伸至各自滤板10底端,中间段向上平齐穿过弯连杆29内侧的两根相邻支杆25的外侧(支杆25的立体状态可以参考图21),当滤板10相对移动至限定张度时,滤布41可被两根支杆25拉动扯清,即从固定处至转折处以及两转折处之间滤布段可以被拉至平直;滤布41顶面中间处固定设有与滤布41横向方向的滤布振打杆51,长度与滤布41宽度一致,在其重力的作用下,滤布41可被拉紧,滤布41总体形成倒U形槽结构。滤布41被拉紧的顺序是从左侧滤板10的底端拉直至左侧支杆25外缘处,从左侧支杆25外缘处拉直至振打杆51底面处,从振打杆51底面处至右侧支杆25外缘处,再至右侧滤板10的底端(单元的立体结构可以参考图21),这样的倒U形槽结构,使得在其内的滤饼或滤渣由于其自身重力的作用可以往下坠落。滤布41可以覆盖滤板10的整个侧面,包括其中的滤液孔13。
本发明的实施方式
为了便于理解本发明,下面将结合具体实施方式对本发明进行描述。除非另有定义,本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本发明。
    实例之一,如图3所示,设有顶杆28与的相对的两弯连杆29顶转轴24铰接,顶杆28的中间处设有垂直向下的导杆31,导杆31的下端设有吊锤32,当相邻滤板10突然被拉开时,滤布振打杆51会有向上移动的惯性,可使吊锤32与滤布振打杆51相撞击,当滤板10相对移动至限定张度时,吊锤32与振打杆51可相互接触。由图3还可以看到,当相邻滤板10处于合拢状态时,振打杆51处于悬吊状态,处于吊垂32下方并分离开,夹在滤布41中间,此时的滤布41也是被扯清拉平的。
实例之一,导杆31穿过顶杆28上设的开孔并用螺栓18连接,螺栓18可固定导杆31并可以调节导杆31下伸的长度,立体状态见图21。
也可以有两套以上导杆31与吊锤32,均匀分布在顶杆28上,并以滤板10竖直方向的垂直滤板10正面的中心面为中心对称设置(图中未画出)。
如图1至2所示,支座27固定在弯杆26内侧的簧片下端,簧片上端固定在弯杆26内侧,可以使支座27在外力作用下产生转动。
如图1所示,弯杆26可由两部分构成,直杆21与弧形杆22通过弯杆转轴23铰接而成,直杆21与弧形杆22内侧还设有防弧形杆22向内侧过度转动的挡块。(挡块在图中未画出)
如图1所示,滤板10的板框侧面设有弯杆26转动限位销12,限定弯连杆29的最大张开角度。限位销12设在弯杆26的两侧滤板上。
实例中,吊锤32设成杆状,方向与滤布振打杆51一致,长度相应(图中未画出)。
实例之一,吊锤32下端内嵌有极性沿垂直方向的永磁体,振打杆51相应位置处亦设有极性相反的永磁体,它们的接触面的极性相同,互相排斥(图中未画出)。
另一实例中,吊锤32下端设有极性沿垂直方向的电磁铁,振打杆51相应位置处设有永磁体,在外界控制电路控制下电磁铁的线圈内通以变化方向的电流,可使振打杆51产生振动(电磁铁与永磁体未画出)正面状态参考图3。
另一实例,如图4及图5所示,吊锤32上连接U形曲杆60,由曲杆一段61 、曲杆二段62 、曲杆三段63共三段首尾平滑圆角相接在一个平面内;曲杆一段61与吊锤32相连并与导杆31垂直,与支杆25平行,向外超出滤布41的边缘;曲杆二段62与曲杆一段61垂直;曲杆三段63与曲杆二段62垂直,共同形成U形结构。图5中是U形曲杆60与滤板10相对位置关系立体图,从图中可以看到曲杆三段63比曲杆一段61更长,其自由端与滤板10接近的一侧平齐。
另一实例,吊锤32上伸出一曲杆U形曲杆60,曲杆一段61 、曲杆二段62 、曲杆三段63以滤板10竖直方向的垂直中心面为中心,两边对称的U形闭合成环形。参见图5(图中未画出闭合状态)。
另一实例,U形曲杆60的曲杆二段62为圆弧形段。(图中未画出)
实例之一,U形曲杆60相对吊锤32可绕曲杆一段61轴心线转动,吊锤32内设有与曲杆一段61相连的驱动电机,驱动电机启动后,可使曲杆一段61绕其轴线来回摆动,通过曲杆一段61带动曲杆三段63并敲击两边的滤布41,其摆动角度以弯杆26内侧限定的范围内。
另一实例,如图6所示,U形曲杆60为中空的管道结构,曲杆三段63的自由端为封闭端,管壁的两侧布设有微孔隙,外接耐压软管与管道相通,当外接耐压软管内通以清洗液70或雾气,该清洗液70雾气可从两侧的微孔隙喷射到两侧的滤布41的整个工作区上。
另一实例 ,如图7所示,U形曲杆60为中空的管道结构并为垂直处向,曲杆二段62的未端与曲杆三段63起始端之间设有驱动盒33,中间均为中空贯通,曲杆三段63上设有一排孔隙,其未端封闭,驱动盒33内设电机可带动曲杆三段63在限定角度内转动,使其内的高压清洗液70来回扫描喷射到两侧滤布41的工作区。
另一实例,见图8所示,支杆25为两端封闭的管状结构,内侧上布设有微孔,当外接软管输入清洗液70可从微孔中将清洗液70喷射到相对面的滤布41工作区,两边管状结构的支杆25设计的微孔可同时穿插喷射或分时喷射清洗液70。
另一实例,见图9至图11所示,导杆31与吊锤32为分离体,导杆31的下端设有导杆凸头311,吊锤32的中心设有穿孔321,与穿孔321相连的还设有限制槽322,导杆31的上端可从吊垂的穿孔321中穿过,其下端的凸头与限制槽322配合,阻止吊锤32从导杆31上脱出,吊锤32可在导杆31中部滑动。
实例中,导杆31与吊锤32为分离体,吊锤32下端设有安装槽323,安装槽323内装设电磁铁,振打杆51相应位置设有永磁体,在外界控制电路控制下电磁铁通以变化方向的电流,可使吊锤32在导杆31上滑动,同时敲击振打杆51。
实例中,在外界控制电路控制下电磁铁通以变化方向的电流并调节其大小,可使吊锤32在导杆31上滑动,可控制击打振打杆51的力度。
实例中,在外界控制电路控制下电磁铁通以变化方向的电流的频率,可使吊锤32在导杆31上滑动,可控制击打振打杆51的频率。
又一实例,见图12至14所示,导杆31与吊锤32连为一体,吊锤32下端设有电机槽90,其内设有振动电机91,电机轴92向下凸出至振打杆51相应位置设有的电机轴适配槽52内,在外部电路控制下,振动电机91通电带动振打杆51振动。
实例中,振动电机91为凸轮电机,或是振动电机91为高频振动电机,也可是振动电机91为超声波振动电机。
另一实例,见图15至20所示,进料器80位于滤板10的中央处的中进料方式,进料器80的外周边连接,进料器80的进料孔与滤板10的隔膜84上相应的进料孔对应并固定,当两块滤板10合拢,其上的两个进料器80相互对接,进料器80上的进料槽处于滤布41远离隔膜84的一面,物料可从进料器80上的凹槽进入由滤布41及滤板10边框所围形成的滤室85中,滤液进入滤液口13内。在进料器80的周边的滤布41远离隔膜84的一面设有一环形布86,其中心在进料器80的轴线上,环形布内贴边861与环形布外贴边862均与滤布41紧密连接,环中间剩余部分为非贴合区,沿环形布86的径向水平方向设有两个环形布开口87;一金属套环88置于环形布86非贴合区内,套环88上位于环形布86的两个开口处分别设有拉环座89,设有的拉环82的两端铰接在拉环座89的孔位上,拉环82的中间部位设有拉线套孔83,相邻滤板10的相对面的拉线套孔83用拉绳81相连,在滤板10逐渐张开时,拉绳81被拉直带动套环88及环形布86向外移动,并可使得滤布41从滤室85中被拉至滤室85外。
实例中,环形布86与滤布41为同一种材料。
实例中,沿环形布86的径向水平方向设有两个以上的环形布开口87。
实例中,套环88的内径与环形布内贴边861的外径尺寸一致。
实例中,套环88、拉环82及拉环82座材料为不锈钢。
实例中,套环88的形状与环形布86的形状相适配,两者均为圆环形。套环88的形状与环形布86的形状为正多边形环。套环88的截面形状为圆形。
实例中,套环88的截面形状为椭圆形。
实例中,拉环82为半圆弧形,直径比套环88径向尺寸大。
实例中,拉绳81为耐温耐腐蚀的弹力绳或不锈钢丝。
实例中, 环形布86的非贴合区的环形宽度大于滤室85的深度。
实例中,滤布41的底端通过滤板10框底端所设的卡槽与相适配的卡条固定。
另一实例,见图21与22所示,滤板10的框底端设有双转杆,包括底端主转杆14、底端次转杆15,滤布41从底端主转杆14表面绕过并从底端主转杆14与底端次转杆15之间的间隙穿过,再绕底端次转杆15表面往下坠,其未端固定在与其宽度一致的滤布坠杆16上,滤布坠杆16使得滤布41被拉清。
另一实例,去掉拉绳81、拉环座89及拉环82,见图22及23所示,在进料器80的周边的滤布41远离隔膜84的一面设有一环形布86,其中心在进料器80的轴线上,环形布内贴边861与环形布外贴边862均与滤布41紧密连接,环中间剩余部分为非贴合区,磁性套环88置于环形布86非贴合区内,其极性方向垂直于滤板10方向,隔膜84相应位置嵌入形状、大小及处向相应的环形电磁铁17。
实例中,环形电磁铁17中线圈电流的方向,在外部控制电路控制下,使得环形电磁铁17与磁性套环88接触面极性相同时,可迫使套环88远离隔膜84并带动滤布41凸出滤室85。
实例中,电磁铁中线圈电流的方向,在外部控制电路控制下,发生周期性改变,环形电磁铁17的极性跟随改变,可使滤布41产生抖动。
工业实用性
以上实例中,一些可以单独使用,可以根据实际需要选用,也可以两俩相互配合使用,或者多个配合使用。本发明在压榨过滤行业可得到广泛的应用,特别在环保行业中的污泥处理过程中有着十分重要的作用。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对申请专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种压滤机滤布脱渣自洁机构,包括若干单元滤板构成的压滤阵列,多幅弯连杆下端相互铰接并与滤板两侧通过侧转轴铰接,每幅弯连杆由两条弯杆通过顶转轴铰接,横向方向形成推拉结构,其特征在于:所述弯杆的内侧设有支座,同一侧的两个支座之间连接有支杆;设有滤布两端分别固定在相邻相对面所述滤板的进料器上并分别向下延伸至各自滤板底端,中间段向上平齐穿过弯连杆内侧的两根相邻支杆的外侧,当滤板相对移动至限定张度时,从进料器固定处至支杆转折处以及两支杆转折处之间滤布段处于平直;所述滤布顶面中间处固定设有与滤布横向方向的滤布振打杆,滤布总体形成倒U形槽结构。
  2. 如权利要求1所述一种压滤机滤布脱渣自洁机构,其特征在于:所述振打杆的长度与滤布宽度一致。
  3. 如权利要求2所述一种压滤机滤布脱渣自洁机构,其特征在于:设有顶杆与所述的相对的两弯连杆顶转轴铰接,所述顶杆的中间处设有垂直向下的导杆,导杆的下端设有吊锤,当相邻滤板被拉开时,所述滤布振打杆可与吊锤相撞击,当滤板相对移动至限定张度时,吊锤与振打杆可相互接触。
  4. 如权利要求3所述一种压滤机滤布脱渣自洁机构,其特征在于:所述导杆穿过顶杆上设的开孔并用螺栓连接,螺栓可固定导杆并可以调节导杆下伸的长度。
  5. 如权利要求3或4所述一种压滤机滤布脱渣自洁机构,其特征在于:设有两套以上所述导杆与吊锤,均匀分布在顶杆上,并以滤板竖直方向的垂直滤板正面的中心面为中心对称设置。
  6. 如权利要求1所述一种压滤机滤布脱渣自洁机构,其特征在于:所述支座固定在弯杆内侧的簧片下端,簧片上端固定在弯杆内侧,可以使支座在外力作用下产生转动。
  7. 如权利要求1所述一种压滤机滤布脱渣自洁机构,其特征在于:所述支座固定在弯杆内侧的簧片下端,簧片上端固定在弯杆内侧,可以使支座在外力作用下产生转动。
  8. 如权利要求1所述一种压滤机滤布脱渣自洁机构,其特征在于:所述滤板的板框侧面设有弯杆转动限位销,限定弯连杆的最大张开角度。
  9. 如权利要求3所述一种压滤机滤布脱渣自洁机构,其特征在于:所述吊锤设成长条杆状,方向与所述振打杆一致,长度相应。
  10. 如权利要求3所述一种压滤机滤布脱渣自洁机构,其特征在于:所述吊锤下端嵌入有极性沿垂直方向的永磁铁,所述振打杆相应位置处亦嵌入有极性相反的永磁铁,它们的接触面的极性相同。
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