A filter cage mechanism capable of automatically replacing filter cloth and a filter cloth replacement method thereof

Abstract

The application discloses a filter cage mechanism capable of automatically replacing filter cloth and a filter cloth replacing method thereof. In the application, the distance between the upper cover and the lower cover is fixed on the pipeline, a plurality of hole groups are formed on the pipeline at positions between the upper cover and the lower cover, the two ends of the inner cage are fixed with the upper cover and the lower cover respectively, two roller shafts located at one side of the inner cage form rotary pairs with the inner cage, one of the roller shafts is driven by a motor, the other roller shaft is fixed with a magnetic damper rotary shaft, n slots are formed on the remaining sides of the inner cage, and outer cages are arranged on the slots, the two ends of the outer cages form sliding pairs with the upper cover and the lower cover respectively, n distance rods are fixed on the inner side of the outer cage, each distance rod is arranged opposite to one slot on the corresponding side of the inner cage, and openings are formed on the outer cage between every two distance rods. The application can realize automatic replacement of the filter cloth, and the filter cloth is changed from flat to wavy through the distance rods, the effective area during filtration is increased, and the filtration efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of dryer technology, specifically relating to a filter cage mechanism that can automatically replace filter cloth and a method for replacing filter cloth. Background Technology

[0002] Rotary vacuum dryers offer efficient and precise drying, minimizing material loss. Their internal vacuum allows for effective control of temperature and humidity, preventing oxidation and deterioration of materials, thus leading to their widespread use. However, to achieve better filtration, the filters in rotary vacuum dryers need frequent replacement. Currently, there are no automated filter replacement devices available in China, requiring manual disassembly and replacement, which is costly and reduces drying efficiency. Therefore, the development of a new automated filter replacement device is increasingly necessary to improve production efficiency and ease of use. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a filter cage mechanism and a filter cloth replacement method that can automatically replace the filter cloth.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The present invention discloses a filter cage mechanism for automatic filter cloth replacement, comprising a magnetic damper, a pipe, a roller, a lower cover, an upper cover, an inner cage, an outer cage, and a drive component. The upper and lower covers are fixed to the pipe at a distance, and multiple sets of holes are equidistantly arranged circumferentially at the position between the upper and lower covers on the pipe. The sets of holes consist of multiple holes equidistantly arranged axially. The inner cage is prismatic and fits loosely on the pipe, with both ends fixed to the upper and lower covers respectively. The two rollers are spaced apart and parallel to the pipe, and both form a rotating pair with the inner cage. They are both located on one side of the inner cage. One roller is driven by a motor, and the other roller is fixed to the rotating shaft of a magnetic damper fixed to the inner cage. The remaining sides of the inner cage are provided with n slots spaced apart, n≥2, and each slot is provided with an outer cage. The two ends of the outer cage form sliding pairs radially with the upper and lower covers respectively. Each outer cage is synchronously driven by a driving component. The inner side of the outer cage is fixed with n abutments spaced apart, and each abutment on the outer cage is directly opposite a slot on the corresponding side of the inner cage. An opening is provided between every two abutments on the outer cage.

[0006] Preferably, both ends of the outer cage are provided with integrally formed connecting plates, and multiple guide rails are fixed on the upper cover and the lower cover, which are arranged equidistantly along the circumference. The two connecting plates on each outer cage and the pair of guide rails facing each other on the upper cover and the lower cover respectively form a sliding pair.

[0007] More preferably, the driving component includes a turntable, a linkage group, and a second motor. The two turntables, the upper cover, and the lower cover respectively form a rotating pair. Each of the two turntables is provided with a linkage group, which consists of multiple linkages arranged equidistantly along the circumference. One end of each linkage in each linkage group is hinged to the corresponding turntable. The other ends of the two opposite linkages in the two linkage groups are respectively hinged to the hinge holes opened in the two connecting plates on an outer cage. The second motor drives one of the turntables to rotate.

[0008] Preferably, the inner cage has fixed plates at both ends of the side without the outer cage, and each roller shaft has two fixed plates forming a rotating pair. The housings of motor one and magnetic damper are fixed to one of the fixed plates by frame one and frame two, respectively. The output shaft of motor one is fixed to the corresponding roller shaft by a coupling.

[0009] More preferably, the two ends of the roller are supported on two fixed plates by bearings.

[0010] The present invention discloses a filter cloth replacement method for a filter cage mechanism with automatic filter cloth replacement, as detailed below:

[0011] In the initial state, the outer cages are separated from the inner cages, and the push rods are not inserted into the corresponding slots. The roll is fixed on the roller shaft that is fixed to the magnetic damper shaft. One end of the filter cloth wound on the roll passes through the gap between the inner cage and each outer cage in sequence and is fixed to the roller shaft driven by the motor. Then, the pipe is fixed inside the dryer through the sealing seat and connected to the vacuum pump inlet outside the dryer. Then, the driving component drives each outer cage to move inward, and each push rod presses the filter cloth located at each slot into the corresponding slot until each outer cage and inner cage are in contact. Each push rod extends into the corresponding slot, and the filter cloth covering the inner cage changes from flat to wavy.

[0012] When changing the filter cloth, the drive unit drives each outer cage to move outward until each outer cage separates from the inner cage. Each push rod extends out of the corresponding slot. The controller controls motor one to drive the corresponding roller to rotate. The used filter cloth is wound on the roller driven by motor one. After the filter cloth is tensioned, it drives the drum and the roller fixed to the magnetic damper shaft to rotate. The unused filter cloth is pulled out and covers the inner cage. The controller controls the output shaft of motor one to rotate at a preset angle and then stops working. All the used filter cloth is wound on the roller driven by motor one. Then the drive unit drives each outer cage to move inward. Each push rod presses the unused filter cloth located at each slot into the corresponding slot until each outer cage and inner cage are in contact. Each push rod extends into the corresponding slot, and the unused filter cloth covering the inner cage changes from flat to wavy.

[0013] During the filter cloth replacement process, when the filter cloth is taut and the filter cloth tension measured by the magnetic damper is greater than the preset value, the controller controls the speed of motor one to decrease until the filter cloth tension measured by the magnetic damper is less than the preset value.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention uses a motor to drive corresponding rollers to rotate and wind used filter cloth, thereby tensioning the filter cloth and driving the rollers fixed to the magnetic damper shaft to rotate. This causes unused filter cloth to be pulled out and placed on the inner cage, thus achieving automatic filter cloth replacement. Furthermore, this invention uses a driving mechanism to separate and attach the outer and inner cages. When the driving mechanism attaches the outer and inner cages, the push rods press the unused filter cloth located at each slot into the corresponding slot, causing the unused filter cloth covering the inner cage to change from flat to wavy, increasing the effective area of ​​the filter cloth during operation and improving filtration efficiency. Simultaneously, this invention uses filter cloth instead of filter paper, which is low-cost, has good toughness, and is less likely to be damaged by the dried material inside the rotary vacuum dryer during rotation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure when the outer cage and inner cage are separated in this invention;

[0018] Figure 3 This is a schematic diagram of the structure when the outer cage and the inner cage are attached in this invention;

[0019] Figure 4 This is a schematic diagram of the structure of the present invention after removing the roller shaft and the top cover;

[0020] Figure 5 This is a schematic diagram of the outer cage in this invention. Detailed Implementation

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the present invention discloses an automatic filter cloth replacement filter cage mechanism, comprising a magnetic damper 3, a pipe 6, rollers 7, a lower cover 8, an upper cover 9, an inner cage 10, an outer cage 11, and a driving component 12. The upper cover 9 and the lower cover 8 are fixed to the pipe 6 at a distance, and the pipe 6 has multiple circumferentially equidistant holes located between the upper cover 9 and the lower cover 8. Each hole group consists of multiple axially equidistant holes. The inner cage 10 is prismatic and fits loosely on the pipe 6, with both ends fixed to the upper cover 9 and the lower cover 8 respectively. Two rollers 7 are spaced apart and parallel to the pipe 6, each forming a rotating pair with the inner cage 10, and each located on one side of the inner cage 10. One roller 7 is driven by a motor 1, and the other roller 7 is fixed to the rotating shaft of the magnetic damper 3 fixed to the inner cage 10. Device 3 is used to measure the tension of the filter paper during filter cloth replacement, and then changes the speed of motor 1 through controller to stabilize the filter cloth replacement process; n slots with a spacing of n≥2 are opened on the other sides of the inner cage 10, and each is provided with an outer cage 11; the two ends of the outer cage 11 form a sliding pair in the radial direction with the upper cover 9 and the lower cover 8 respectively, and each outer cage 11 is synchronously driven by the driving component 12; n abutments are fixed on the inner side of the outer cage 11 with a spacing of n, and each abutment on the outer cage 11 is directly opposite to a slot on the corresponding side of the inner cage 10; an opening is opened on the outer cage 11 between every two abutments.

[0023] As a preferred embodiment, such as Figure 5 As shown, both ends of the outer cage 11 are provided with integrally formed connecting plates 11-2. Multiple guide rails are fixed on the upper cover 9 and the lower cover 8, which are equidistantly arranged along the circumference. The two connecting plates 11-2 on each outer cage 11 and the pair of guide rails facing each other on the upper cover 9 and the lower cover 8 respectively form a sliding pair.

[0024] More preferably, the driving component 12 includes a turntable, a linkage group, and a second motor. The two turntables, the upper cover 9, and the lower cover 8 respectively form a rotating pair. Each of the two turntables is provided with a linkage group, which consists of multiple connecting rods 13 arranged equidistantly along the circumference. One end of each connecting rod 13 in each linkage group is hinged to the corresponding turntable. The other end of each pair of connecting rods 13 in the two linkage groups is hinged to the hinge holes 11-1 opened in the two connecting plates 11-2 on an outer cage 11. The second motor drives one of the turntables to rotate.

[0025] In a preferred embodiment, the inner cage 10 has fixed plates at both ends of the side without the outer cage 11. The two ends of each roller shaft 7 form a rotating pair with the two fixed plates. The housings of motor 1 and magnetic damper 3 are fixed to one of the fixed plates by frame 2 and frame 4 respectively. The output shaft of motor 1 is fixed to the corresponding roller shaft 7 by coupling 14.

[0026] More preferably, the two ends of the roller 7 are supported on two fixed plates by bearings 5.

[0027] Among them, motor 1 and motor 2 are both controlled by the controller, and the signal output terminal of magnetic damper 3 is connected to the controller.

[0028] The present invention discloses a filter cloth replacement method for a filter cage mechanism with automatic filter cloth replacement, as detailed below:

[0029] In the initial state, the outer cages are separated from the inner cages, and the push rods are not inserted into the corresponding slots. The roll is fixed on the roller 7, which is fixed to the rotating shaft of the magnetic damper 3. One end of the filter cloth wound on the roll passes through the gap between the inner cage and each outer cage 11 in sequence and is fixed to the roller 7 driven by the motor 1. Then, the pipe 6 is fixed inside the dryer through the sealing seat and connected to the vacuum pump inlet outside the dryer. The vacuum pump is used to extract the moisture inside the dryer. Then, the drive component 12 drives each outer cage 11 to move inward. Each push rod presses the filter cloth located at each slot into the corresponding slot until each outer cage 11 is in contact with the inner cage 10. Each push rod extends into the corresponding slot, and the filter cloth covering the inner cage changes from flat to wavy, which increases the effective area of ​​the filter cloth when working and improves the filtration efficiency.

[0030] When changing the filter cloth, the drive unit 12 drives each outer cage 11 to move outward until each outer cage separates from the inner cage. Each push rod extends out of the corresponding slot. The controller controls the motor 1 to drive the corresponding roller 7 to rotate. The used filter cloth is wound on the roller 7 driven by the motor 1. After the filter cloth is tensioned, it drives the drum and the roller 7 fixed to the rotating shaft of the magnetic damper 3 to rotate. The unused filter cloth is pulled out and covers the inner cage 10. The controller controls the output shaft of the motor 1 to rotate at a preset angle and then stops working. All the used filter cloth is wound on the roller 7 driven by the motor 1. Then the drive unit 12 drives each outer cage 11 to move inward. Each push rod presses the unused filter cloth located at each slot into the corresponding slot until each outer cage 11 is in contact with the inner cage 10. Each push rod extends into the corresponding slot, and the unused filter cloth covering the inner cage changes from flat to wavy.

[0031] During the filter cloth replacement process, when the filter cloth is taut and the filter cloth tension measured by the magnetic damper 3 is greater than the preset value, the controller controls the speed of motor 1 to decrease until the filter cloth tension measured by the magnetic damper is less than the preset value, thereby keeping the filter cloth replacement process stable.

Claims

1. A filter cage mechanism with automatic filter cloth replacement, comprising a pipe and an inner cage, characterized in that: It also includes a magnetic damper, rollers, a lower cover, an upper cover, an outer cage, and a drive component; the upper and lower covers are fixed to the pipe at a distance, and multiple sets of holes are equidistantly arranged circumferentially on the pipe between the upper and lower covers, each set consisting of multiple holes equidistantly arranged axially; the inner cage is prismatic and fits loosely on the pipe, with both ends fixed to the upper and lower covers respectively; the two rollers are spaced apart and parallel to the pipe, each forming a rotating pair with the inner cage, and each located on one side of the inner cage, one of which... One roller shaft is driven by a motor, and the other roller shaft is fixed to the magnetic damper shaft fixed on the inner cage. The remaining sides of the inner cage are provided with n slots arranged at intervals, n≥2, and each is provided with an outer cage. The two ends of the outer cage form sliding pairs in the radial direction with the upper cover and the lower cover respectively, and each outer cage is driven synchronously by a driving component. The inner side of the outer cage is fixed with n abutments arranged at intervals, and each abutment on the outer cage is directly opposite a slot on the corresponding side of the inner cage. An opening is provided on the outer cage between every two abutments.

2. The filter cage mechanism with automatic filter cloth replacement according to claim 1, characterized in that: Both ends of the outer cage are provided with integrally formed connecting plates. Multiple guide rails are fixed on the upper and lower covers and arranged equidistantly along the circumference. The two connecting plates on each outer cage and the pair of guide rails on the upper and lower covers respectively form a sliding pair.

3. The filter cage mechanism with automatic filter cloth replacement according to claim 2, characterized in that: The driving component includes a turntable, a linkage group, and a second motor. The two turntables, the upper cover, and the lower cover respectively form a rotating pair. Each of the two turntables is provided with a linkage group, which consists of multiple linkages arranged equidistantly along the circumference. One end of each linkage in each linkage group is hinged to the corresponding turntable. The other ends of the two opposite linkages in the two linkage groups are respectively hinged to the hinge holes opened in the two connecting plates on an outer cage. The second motor drives one of the turntables to rotate.

4. The filter cage mechanism with automatic filter cloth replacement according to claim 1, characterized in that: The inner cage has fixed plates at both ends of the side without the outer cage. The two ends of each roller shaft and the two fixed plates form a rotating pair. The housings of motor one and magnetic damper are fixed to one of the fixed plates by frame one and frame two, respectively. The output shaft of motor one is fixed to the corresponding roller shaft by a coupling.

5. A filter cage mechanism for automatically replacing filter cloth according to claim 4, characterized in that: The roller shaft is supported on two fixed plates by bearings at both ends.

6. A filter cloth replacement method for a filter cage mechanism with automatic filter cloth replacement according to any one of claims 1 to 5, characterized in that: Specifically as follows: In the initial state, the outer cages are separated from the inner cages, and the push rods are not inserted into the corresponding slots. The roll is fixed on the roller shaft that is fixed to the magnetic damper shaft. One end of the filter cloth wound on the roll passes through the gap between the inner cage and each outer cage in sequence and is fixed to the roller shaft driven by the motor. Then, the pipe is fixed inside the dryer through the sealing seat and connected to the vacuum pump inlet outside the dryer. Then, the driving component drives each outer cage to move inward, and each push rod presses the filter cloth located at each slot into the corresponding slot until each outer cage and the inner cage are in contact. Each push rod extends into the corresponding slot, and the filter cloth covering the inner cage changes from flat to wavy. When changing the filter cloth, the drive unit drives each outer cage to move outward until each outer cage separates from the inner cage. Each push rod extends out of the corresponding slot. The controller controls motor one to drive the corresponding roller to rotate. The used filter cloth is wound on the roller driven by motor one. After the filter cloth is tensioned, it drives the drum and the roller fixed to the magnetic damper shaft to rotate. The unused filter cloth is pulled out and covers the inner cage. The controller controls the output shaft of motor one to rotate at a preset angle and then stops working. All the used filter cloth is wound on the roller driven by motor one. Then the drive unit drives each outer cage to move inward. Each push rod presses the unused filter cloth located at each slot into the corresponding slot until each outer cage and inner cage are in contact. Each push rod extends into the corresponding slot. The unused filter cloth covering the inner cage changes from flat to wavy. During the filter cloth replacement process, when the filter cloth is taut and the filter cloth tension measured by the magnetic damper is greater than the preset value, the controller controls the speed of motor one to decrease until the filter cloth tension measured by the magnetic damper is less than the preset value.

Images