CN201001989Y - Filter Cloth Regeneration and Deviation Correction Device for Rotary Drum Vacuum Filter - Google Patents

Abstract

The utility model discloses a filter cloth regeneration and deviation correction device for a rotary drum vacuum filter, wherein the automatic deviation correction device comprises: a filter cloth automatic tensioning device, a bow-shaped tensioning rod and a movable tensioning roller, and these three parts are successively horizontal Arranged on the filter cloth washing tank, the position of the bow-shaped tensioning rod is higher than that of the filter cloth automatic tensioning device. The filter cloth automatic washing and regeneration device includes a discharge roller, a discharge air blowing pipe, a cleaning pipe for the reverse side of the filter cloth and a cleaning pipe for the front side of the filter cloth. It is located at the bottom right of the discharge air blowing pipe and below the bow-shaped tension rod. Two sets of filter cloth front cleaning pipes are located in the middle of the two filter cloth reverse cleaning pipes and below the movable tension roller. The utility model realizes solid-liquid separation and filter media regeneration simultaneously during the filtration process, automatic deviation correction of filter cloth and automatic control of equipment operation, simple and reasonable structure, efficient and stable performance, and convenient operation.

Description

Filter Cloth Regeneration and Deviation Correction Device for Rotary Drum Vacuum Filter

technical field

The utility model relates to a device in the field of mechanical technology, in particular to a filter cloth regeneration and deviation correction device for a drum vacuum filter.

Background technique

With the development of society and the diversity of products, there are a large number of solid-liquid separation problems that need our attention, and at the same time promote the improvement of solid-liquid separation equipment. Filtration is the main means of solid-liquid separation and has an extremely wide range of applications. Vacuum filters have been in production and application in my country since the 1960s, but the form has always followed the structure of the former Soviet Union with bulky, high power consumption, and low filtration efficiency, without major changes. From the late 1980s to the 1990s, large domestic pharmaceutical companies in my country began to introduce advanced vacuum drum filters from American DORR and Western European countries, and the performance advantages of imported equipment emerged.

The current vacuum drum filter mainly includes folding belt type and scraper type drum filter. The working principle is that under the action of pressure difference, when the liquid-solid two-phase mixture is forced to pass through the filter medium, the solid particles are trapped to achieve the purpose of solid-liquid separation. The unloading method of the folding belt drum filter is to use three rollers. The filter cloth is wound on the filter drum and the rollers in a certain way. With the sudden change of the running direction of the filter cloth, the filter cake will fall off from the filter cloth and fall into the filter cloth. in the pan. The shedding of the filter cake in the scraper drum filter depends on the scraper on the side of the drum.

The current vacuum drum filter has the following problems: (1) The solid-liquid separation and the regeneration of the filter medium cannot be carried out at the same time during the filtration process; (2) The filter cloth correction device needs to be adjusted manually, which is difficult to operate, and the filter cloth runs off and runs off. The creases generated when the bias is pushed back cause the filter cloth to wear; (3) The filtration performance is greatly fluctuated by the characteristics of the material; the scope of application is narrow, and it is mostly used in the papermaking and starch industries; Unaffordable and expensive to run.

Contents of the invention

In order to solve the deficiencies in the above-mentioned prior art, the utility model provides a drum vacuum filter cloth regeneration and correction device, through the solid-liquid separation and regeneration of the filter medium in the filtration process at the same time, the filter cloth automatically corrects the deviation And the automatic control of equipment operation, simple and reasonable structure, efficient and stable performance, and convenient operation.

The utility model is realized through the following technical solutions, and the utility model includes: an automatic deviation correcting device, and a filter cloth automatic washing and regenerating device. The two devices are installed on the side plates on both sides of the filter cloth washing tank, and are located on the discharge side of the filter liquid storage tank.

The automatic correction device includes: filter cloth automatic tensioning device, bow-shaped tensioning rod and movable tensioning roller, these three components are arranged horizontally on the filter cloth washing tank in turn, and the position of the bow-shaped tensioning rod is higher than Tensioner.

The movable tensioning roller includes: a horizontal adjustment screw, a vertical adjustment screw, a movable bearing, a movable roller guide bracket, and a movable tensioning roller; movable bearings are arranged at both ends of the movable tensioning roller, and a vertical adjusting screw is arranged on the upper part of the movable bearing. The bearings move vertically in the chute on both sides of the movable roller guide bracket, and one side of the movable roller guide bracket is provided with a horizontal adjustment screw.

The filter cloth automatic washing and regenerating device includes a discharge roller, a discharge air blowing pipe, a cleaning pipe on the reverse side of the filter cloth and a cleaning pipe on the front side of the filter cloth. The cleaning pipe is located at the bottom right of the discharge air blowing pipe and below the bow-shaped tension rod, and the two sets of filter cloth front cleaning pipes are located in the middle of the cleaning pipes on the back of the two filter cloths and below the movable tension roller.

There are protruding spiral steel wires on the surface of the discharge roller, nozzles of different specifications are installed on the filter cloth reverse cleaning pipe and positive cleaning pipe, the parameters of the nozzles are selected through the test of the material, and the position of the cleaning pipe can be selected according to the requirements Combination arrangement.

The filter cloth automatic rectification device of the utility model keeps the tension force of the filter cloth equal, and the rectification of the filter cloth can be carried out automatically at any time; the filter cloth automatically washes and regenerates the device, the filter cloth enters the automatic cleaning after passing through the unloading area, and the high-pressure cleaning water passes through The nozzles clean the front and back sides of the filter cloth at different positions, and the pressure and spray volume of the cleaning water can be adjusted according to the vacuum degree of the filter.

The utility model adopts an automatic rectification device for filter cloth to compensate and adjust the stretching force of the permeable medium (filter cloth) during operation to prevent the filter cloth from running off, and at the same time, the filter cloth retains solid particles to realize the process of regeneration. The filter cake retained by the filter cloth passes through suction filtration, drying, washing, and re-drying area, and then runs to the unloading area with the filter cloth. The fine particle residues in the pores of the filter cloth are washed away to complete the regeneration of the filter cloth. The regenerated filter cloth is rewound to the drum through the mop roller, and enters the suspension with the drum to start a new cycle.

Compared with the prior art, the utility model adopts the technology of automatic filter cloth regeneration and deviation correction device, the filter machine continuously feeds and discharges materials under the action of vacuum, automatically cleans the filter cloth during operation, and operates automatically and continuously; The filter cloth is convenient to load and unload, and the filter cloth is automatically rectified during operation, so that no one can operate; after adopting the technology of automatic filter cloth regeneration and rectifying device technology, the components have reasonable structure, stable transmission, and no noise. Maintenance: The material is completely unloaded, the filter cloth is fully washed, and the material filtration efficiency is high, reaching 95-97%. The utility model can be applied to the fields of pharmacy, chemical industry, food, metallurgy, papermaking, environmental protection and the like, and can obtain good economic and environmental benefits.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model automatic correction device

Fig. 2 is a structural schematic diagram of the utility model filter cloth automatic washing regeneration device

Fig. 3 is a working principle diagram of the utility model

In Fig. 1, unloading roller 1, filter cloth automatic tensioning device 2, spring 3, guide sleeve 4, bracket 5, guide rod 6, guide roller 7, D-shaped guide bar 8, bow-shaped tension rod 9, tension Rod support 10, horizontal adjustment screw rod 11, vertical adjustment screw rod 12, movable bearing 13, movable roller guide bracket 14, movable tension roller 15, photoelectric induction device 16.

Among Fig. 2, filter cloth washing tank 17, discharge air blowing pipe 18, filter cloth reverse cleaning pipe 19, filter cloth front cleaning pipe 20, nozzle 21, liquid storage tank 22, washing water filter 23.

Detailed ways

Below in conjunction with accompanying drawing, the embodiment of the present utility model is described in detail, present embodiment is carried out under the premise of technical scheme of the present utility model, has provided detailed implementation mode and process, but the protection scope of the present utility model is not limited to the following the described embodiment.

This embodiment includes: an automatic deviation correction device, and a filter cloth automatic washing and regenerating device. Two devices are installed on the side plates on both sides of the filter cloth washing tank 17, located at the discharge side of the filter liquid storage tank.

As shown in Fig. 1, the automatic deviation correction device includes: filter cloth automatic tensioning device 2, bow-shaped tensioning rod 9 and movable tensioning roller. These three components are arranged horizontally on the filter cloth washing tank 17 successively, and the position of the bow-shaped tensioning rod 9 is higher than that of the filter cloth automatic tensioning device 2 .

The filter cloth automatic tensioning device 2 is located above the unloading roller 1 and has two sets, which are symmetrically arranged on the horizontal fixing plates on both sides of the filter cloth washing tank 17 through angle steel brackets.

The bow-shaped tensioning rod 9 is installed behind the filter cloth automatic tensioning device 2, and the bow-shaped pipe is fixed on the horizontal fixing plates on both sides of the filter cloth washing tank 17 by two angle steel fixing brackets;

The arc-shaped tension rod 9 is a sinusoidal arc-shaped elbow with a raised middle, and is installed on the tension rod bracket 10 with a fixed clip. The cloth is flat and wrinkle-free.

The filter cloth automatic tensioning device 2 includes: a spring 3 , a guide sleeve 4 , a bracket 5 , a guide rod 6 , a guide roller 7 and a D-shaped guide bar 8 . The two guide rollers 7 are located at the front end of the D-shaped guide bar 8, which is in the shape of a splayed. The D-shaped guide bar 8 is made of two pieces of high wear-resistant materials. After the two pieces are synthesized, they form a D-shaped channel. Connected by a pin shaft, slide in the guide sleeve 4, the guide sleeve 4 is fixed with the bracket 5 by two nuts, the whole filter cloth automatic tensioning device 2 is fixed on the horizontal fixing plate of the filter cloth washing tank 17 through the bracket 5, the tail of the guide rod 6 Spring 3 is housed, and the compression force of spring 3 can be adjusted arbitrarily.

The movable tension roller is composed of a horizontal adjustment screw rod 11, a vertical adjustment screw rod 12, a movable bearing 13, a movable roller guide bracket 14, and a movable tension roller 15. Movable bearings 13 are installed at both ends of the movable tension roller 15, and a vertical adjustment screw 12 is arranged on the upper part of the movable bearing 13. Horizontal adjustment screw 11, by adjusting the handle of vertical adjustment screw 12, the movable tension roller 15 moves vertically in the movable roller guide bracket 14, and adjusting the handle of the horizontal adjustment screw 11 makes the movable roller guide bracket 14 swing horizontally along the lower fulcrum. The position of the tension roller 15 is adjusted arbitrarily in the vertical and horizontal directions.

The movable roller guide bracket 14 is fixed with the filter cloth washing tank 17 side plates by round pins, and the movable bearings on both sides of the movable tension roller 15 are connected with the chute of the movable roller guide bracket 14 .

As shown in FIG. 2 , the filter cloth automatic washing and regenerating device includes a discharge roller 1 , a discharge air blowing pipe 18 , a filter cloth reverse cleaning pipe 19 and a filter cloth front cleaning pipe 20 . The discharge air blowing pipe 18 is located at the bottom right of the discharge drum 1, and the direction of the air injection port is at right angles to the discharge direction of the filter cloth and filter cake. Below the tension rod 9, two sets of filter cloth front cleaning pipes 20 are located in the middle of the two filter cloth back cleaning pipes 19 and below the movable tension roller 15, and the cleaning port and the filter cloth travel are arranged at an acute angle.

The surface of the discharge roller 1 has a raised spiral steel wire, which is located outside the discharge side of the drum filter, and the linear speed of rotation and the linear speed of the drum maintain a constant speed in a certain ratio.

The nozzles 21 of different specifications and types are housed on the filter cloth reverse cleaning pipe 19 and the filter cloth front cleaning pipe 20. The location can be arranged according to the characteristics of the filter material.

As shown in Figure 3, the utility model adopts an automatic rectification device for filter cloth to compensate and adjust the tensile force during the operation of the permeable medium (filter cloth) to prevent the filter cloth from running off, and at the same time the filter cloth retains solid phase particles Afterwards, the regeneration process is realized. The filter cake retained by the filter cloth passes through suction filtration, drying, washing, and re-drying area, and then runs to the unloading area with the filter cloth. The front and back sides of the cloth are fully washed, and the fine particle residues filled in the pores of the filter cloth are washed away to complete the regeneration of the filter cloth. The regenerated filter cloth is rewound to the drum through the support roller, and enters the suspension with the drum to start a new cycle.

The bow-shaped tension rod 9 expands the filter cloth to both sides along the bow-shaped tension rod 9 during operation, so as to flatten the filter cloth and eliminate filter cloth wrinkles. In order to meet the needs of different materials and different filter cloths, the bow-shaped tensioning rod 9 is fixed on the tensioning rod bracket 10 with a hoop. Minimize the friction between the filter cloth and the tension rod to increase the service life of the filter cloth. At the same time, the bow-shaped tension rod 9 lifts the filter cake, and the filter cake is broken and separated from the filter cloth, so that the discharge is more complete.

The filter cloth automatic tensioning and rectifying device is used for automatically adjusting the tension force in the width direction of the filter cloth and automatically correcting the deviation of the filter cloth. There are D-shaped guide blocks 8 on both sides of the width of the filter cloth, and guide rollers are provided to guide the filter cloth into the guide device. When the filter cloth is running normally, the force on the D-shaped guide blocks 8 on both sides of the filter cloth automatic tensioning device 2 is equal. Block 8 detects the offset of the filter cloth, and at the same time, the force of the spring 3 is unbalanced. With the increase of the offset, the force of the spring 3 that is offset to the middle of the drum gradually increases, and the filter cloth is automatically tensioned. The device 2 automatically returns the filter cloth to its original position, and finally balances the force on the D-shaped guide blocks 8 on both sides, so that the filter cloth can walk on the correct working position. The filter cloth automatic tensioning device 2 is also equipped with a photoelectric sensing device 16, which is installed above the filter cloth automatic tensioning device 2, one on each side of the left and right sides, once the offset of the D-shaped guide block 8 exceeds the automatic deviation correction range, after the photoelectric sensing device 16 receives a signal, it sends out an instruction to adjust the movable tension roller 15, and adjusts to avoid damage to the filter cloth due to excessive force.

The movable tension roller 15 is used to adjust the tension force in the length direction of the filter cloth and to adjust the deviation caused by uneven force during the operation of the filter cloth. The position of the movable tension roller 15 can be adjusted arbitrarily in the vertical and horizontal directions, even if the force on both sides of the width of the filter cloth is unequal due to various reasons, it can be easily adjusted to the normal working state.

The filter cloth automatic washing and regenerating device includes a discharge roller, a discharge air injection, a filter cloth reverse cleaning pipe and a positive cleaning pipe. After the filter cloth is unloaded by the discharge drum 1, first blow the compressed air from the reverse side of the filter cloth to make the remaining filter cake separate from the filter cloth, and at the same time dredge the filter cloth, and then clean the filter cloth back and The positive, negative and forward cleaning are repeated four times to fully regenerate the filter cloth.

The utility model features: the filter cloth automatic rectification device keeps the tension force of the filter cloth equal, and the rectification of the filter cloth can be carried out automatically at any time; the filter cloth automatic washing regeneration device, the filter cloth enters the automatic cleaning after passing through the discharge area, and the high-pressure cleaning water passes through The nozzle cleans the front and back sides of the filter cloth at different positions, so that the filter cloth intercepts solid particles and realizes the regeneration process. The filter cloth water spraying point and back blowing point can be combined flexibly, so that the filter cake can be completely unloaded, and the filter cloth can be fully regenerated with less washing water. And the repeated recycling of washing water, the amount and repeated use of washing water are important ways to control water pollution, save water resources and reduce production costs.

Claims (10)

1. A drum vacuum filter cloth regeneration and deviation correction device, characterized in that it comprises: an automatic deviation correction device, a filter cloth automatic washing regeneration device, and the automatic deviation correction device comprises: an automatic tensioning device for filter cloth (2), Bow-shaped tensioning rod (9) and movable tensioning roller, these three components are arranged horizontally on the filter cloth washing tank (17) successively, and the position of the bow-shaped tensioning rod (9) is higher than that of the filter cloth automatic tensioning device (2 ); the filter cloth automatic washing and regenerating device comprises a discharge roller (1), a discharge air blowing pipe (18), a filter cloth reverse side cleaning pipe (19) and a filter cloth front cleaning pipe (20), and the discharge air blowing pipe (20) The blowpipe (18) is located at the bottom right of the discharge drum (1), and the two sets of cleaning pipes (19) for the reverse side of the filter cloth are located at the bottom right of the discharge air blowing pipe (18) and below the bow-shaped tension rod (9). The cloth front cleaning pipe (20) is positioned at the middle part of the two filter cloth reverse cleaning pipes (19) and below the movable tension roller (15). 2. The filter cloth regeneration and deviation correction device for drum vacuum filter according to claim 1, characterized in that, the bow-shaped tensioning rod (9) is arranged behind the filter cloth automatic tensioning device (2), and is composed of two An angled steel fixing bracket is fixed on the horizontal fixing plates on both sides of the filter cloth washing tank (17); on the bracket (10). 3. The device for regenerating and rectifying the filter cloth of the drum vacuum filter according to claim 1, characterized in that the automatic tensioning device for filter cloth (2) is located above the discharge roller (1), and there are two sets, The horizontal fixing plates on both sides of the filter cloth washing tank (17) are symmetrically arranged on the left and right through the angle steel bracket. 4. The filter cloth regeneration and deviation correction device for drum vacuum filter according to claim 1 or 3, characterized in that the filter cloth automatic tensioning device (2) includes: a spring (3), a guide sleeve (4) , bracket (5), guide rod (6), guide roller (7) and D-shaped guide bar (8); two guide rollers (7) are located at the front end of D-shaped guide bar (8), in a figure-eight shape, D-shaped guide The bar (8) is connected with the guide rod (6) through a pin shaft, the D-shaped guide bar (8) is arranged in the guide sleeve (4), the guide sleeve (4) is fixedly connected with the bracket (5), and the tail of the guide rod (6) There are springs (3). 5. The filter cloth regeneration and deviation correction device for drum vacuum filter according to claim 1 or 3, characterized in that the filter cloth automatic tensioning device (2) is also provided with a photoelectric sensor device (16), the photoelectric sensor Device (16) is located at the filter cloth automatic tensioning device (2) top, each one on the left and right sides. 6. The filter cloth regeneration and deviation correction device for drum vacuum filter according to claim 1, characterized in that, the active tensioning roller comprises: a horizontal adjustment screw (11), a vertical adjustment screw (12), a movable bearing (13), movable roller guide bracket (14), movable tension roller (15); movable tension roller (15) is provided with movable bearings (13) at both ends, and the upper part of movable bearing (13) has vertical adjustment screw rod (12) , the movable bearing (13) moves vertically in the chute on both sides of the movable roller guide bracket (14), and one side of the movable roller guide bracket (14) is provided with a horizontal adjustment screw rod (11). 7. The filter cloth regeneration and deviation correction device for drum vacuum filter according to claim 6, characterized in that, the movable roller guide bracket (14) is fixed to the side plate of the filter cloth washing tank (17) by a round pin, and the movable roller The movable bearings on both sides of the tension roller (15) are connected with the chute of the movable roller guide bracket (14). 8. The filter cloth regeneration and deviation correction device for drum vacuum filter according to claim 1, characterized in that, the surface of the discharge roller (1) has protruding spiral steel wires, and is located at the drum filter discharge drum. Material side outside. 9. The device for regenerating and rectifying the filter cloth of the drum vacuum filter according to claim 1, characterized in that, the direction of the air injection pipe (18) of the discharge air is aligned with the discharge direction of the filter cloth and cake. Right angle; the cleaning pipe (20) on the front side of the filter cloth is arranged at an acute angle with the cleaning port of the filter cloth. 10. The filter cloth regeneration and deviation correction device for drum vacuum filter according to claim 1, characterized in that, the cleaning pipe (19) on the back side of the filter cloth and the cleaning pipe (20) on the front side of the filter cloth are provided with nozzles (21 ).

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