CN211141571U - One-machine multi-stage filtering pore plate grid - Google Patents
One-machine multi-stage filtering pore plate grid Download PDFInfo
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- CN211141571U CN211141571U CN201922073707.6U CN201922073707U CN211141571U CN 211141571 U CN211141571 U CN 211141571U CN 201922073707 U CN201922073707 U CN 201922073707U CN 211141571 U CN211141571 U CN 211141571U
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- 238000001914 filtration Methods 0.000 title claims abstract description 63
- 239000011148 porous material Substances 0.000 title claims abstract description 62
- 239000002893 slag Substances 0.000 claims abstract description 53
- 239000010865 sewage Substances 0.000 claims abstract description 28
- 238000011001 backwashing Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 208000032369 Primary transmission Diseases 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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Abstract
The utility model relates to a multi-stage filtering pore plate grid of a machine, which comprises a frame, a filtering net plate component, a driving component, a grid slag squeezing spiral component and a back washing component; the frame is provided with a sewage inlet, a sewage outlet and a grid slag outlet; the filter screen plate assembly comprises at least three stages of filter screen plates with different filter precisions, and each stage of filter screen plate is a group of annular multi-row chain structures connected end to end; the grid slag squeezing screw assembly comprises a transmission chain, a driven chain wheel, a screw shaft, a squeezing pipe, a U-shaped filter screen plate and a collecting tank; the main shaft of the driving assembly is also provided with a driving chain wheel and an electromagnetic clutch which drive the screw shaft. The device has the characteristics of reasonable structural design, space and floor area saving, convenient operation and use, low operation and maintenance cost and relatively high automation degree, can effectively improve the pretreatment efficiency in sewage treatment, and meets the use requirements of sewage treatment plants in various scales.
Description
Technical Field
The utility model relates to a sewage treatment technical field especially relates to a quick-witted multistage filtration orifice plate grid.
Background
The pore plate grating is one of key filtering devices in a pretreatment area of a sewage treatment plant, and along with the improvement of the sewage treatment process level and the improvement of the discharged water quality index, the filtering effect of the sewage treatment plant of the new era on the pretreatment area is more emphasized and the requirement is more strict. The pretreatment area is matched with conventional coarse grids, medium grids, lifting water pumps, fine grids and other equipment, the structural requirement and the filtering precision requirement of the fine grids are gradually improved, and the fine grids are classified and added with superfine grids. Therefore, in the design of the sewage treatment plant in the new era, two fine gratings need to be designed, and when the efficient water treatment processes such as MBR and the like are adopted, the superfine gratings need to be added, namely three fine gratings are required in common, and the inner inflow type pore plate gratings are required to be used. The 2 ~ 3 grades of fine grids of installation can improve the filter effect to sewage greatly through the design, guarantee follow-up process equipment operating stability, reduce equipment fault rate, improve sewage treatment efficiency and play water quality of water, consequently improve preliminary treatment fine grid filtration efficiency, increase the filtration progression and be the prerequisite of guarantee sewage treatment plant high efficiency steady operation, be the trend of great tendency. However, the number of equipment, the civil engineering scale and the occupied area need to be increased by installing 2-3 levels of fine grids according to conventional equipment and a conventional design idea, so that the investment cost is obviously increased, and the method is a key factor for hindering the popularization of a new technology. The utility model discloses just provide based on above-mentioned research background, aim at providing a quick-witted multistage filtration orifice plate grid in order to overcome above-mentioned defect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the multi-stage filtration pore plate grid has the characteristics of reasonable structural design, low equipment investment cost, small occupied area, convenience in operation and use, low operation and maintenance cost and relatively high automation degree, can effectively improve the pretreatment efficiency in sewage treatment, and meets the use requirements of sewage treatment plants in various scales.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a one-machine multi-stage filter orifice plate grid comprises a frame, a filter screen plate assembly, a driving assembly and a grid slag squeezing spiral assembly; wherein the frame is provided with a sewage inlet, a sewage outlet and a grid slag outlet; the sewage inlet is arranged on the upstream surface of the rack; the grid slag discharge port is arranged at a slag discharge port of the grid slag pressing spiral assembly; the filter screen plate assembly, the driving assembly and the grid slag squeezing spiral assembly are all arranged on the frame; the driving assembly is arranged at the middle upper part of the rack and comprises a speed reducing motor and a main shaft, and an output shaft of the speed reducing motor is in key connection with the main shaft; the main shaft penetrates through the front part and the rear part of the frame, and main shaft supporting bearings are arranged at the front part and the rear part of the frame; the filter screen plate assembly comprises at least three stages of filter screen plates with different filter precisions, each stage of filter screen plate is a group of annular multi-row chain structures connected end to end, the first stage of filter screen plate is arranged at the innermost part of the frame, the second stage of filter screen plate is arranged at the outer part of the first stage of filter screen plate, the third stage of filter screen plate is arranged at the outer part of the second stage of filter screen plate, and the rest is done in sequence; the upper part of the ring-shaped multi-row chain structure of the first-stage filter screen plate is hung on two first driving chain wheels arranged at different positions on the main shaft, and the rotating radius of the first-stage filter screen plate is the smallest; the annular upper parts of the annular multi-row chain structures of the secondary filter screen plates are also hung on two second driving chain wheels arranged on the main shaft in the same way, the annular upper parts of the annular multi-row chain structures of the tertiary filter screen plates are also hung on two third driving chain wheels arranged on the main shaft in the same way, the two second chain wheels are respectively and correspondingly arranged at the outer sides of the two first chain wheels, the radius of the second chain wheels is larger than that of the first chain wheels, the two third chain wheels are respectively and correspondingly arranged at the outer sides of the two second chain wheels, the radius of the third chain wheels is larger than that of the second chain wheels, and so on; the annular multi-row chain structure of each stage of filter screen plate is only hung on two driving chain wheels arranged on a main shaft at the upper part, no rotating chain wheel is arranged at the lower part, and the screen plate realizes steering rotation at the lower part by virtue of guide rail grooves fixed on a front panel and a rear panel of a frame; the grid slag squeezing spiral component is positioned in the frame and is arranged at the middle-upper position in the primary filter screen plate; the grid slag squeezing screw assembly comprises a transmission chain, a primary transmission chain wheel, a screw shaft, squeezing pipes, U-shaped filter screen plates and collecting tanks, wherein the collecting tanks are respectively arranged inside each group of filter screen plates; the U-shaped filter screen plate is arranged at the lower part of the slag collecting plate of the innermost filter screen plate, namely the inner central grid slag collecting tank; the spiral shaft is arranged on the inner surface of the innermost central grid slag collecting tank; the squeezing pipe is arranged at the slag discharge port; and a screen plate transmission chain wheel and an electromagnetic clutch are further arranged on a main shaft of the driving assembly, the transmission chain is respectively connected with a screw shaft transmission driving chain wheel and a screw shaft driven chain wheel, and the electromagnetic clutch is respectively arranged on each screen plate transmission chain wheel and the driving chain wheel of the grid slag squeezing screw assembly.
As a further optimization of the scheme, the multi-stage filtering pore plate grille of the single machine also comprises a backwashing component, wherein the backwashing component is arranged at the upper part of each annular pore plate component and is connected with a backwashing water pump through a water pipe; the back washing component comprises a back washing water pipe and fan-shaped washing nozzles uniformly arranged on the pipe wall.
As a further optimization of the scheme, the one-machine multi-stage filter orifice plate grid further comprises an automatic control system, wherein the automatic control system comprises a controller, a timer and/or liquid level sensors arranged on two sides of each stage of filter orifice plate, and the controller is respectively connected with the timer and the liquid level sensors on two sides of each stage of filter orifice plate and is also connected with a transmission chain wheel of each stage of filter orifice plate and an electromagnetic clutch on a spiral shaft of a grid slag squeezing spiral assembly; the liquid level sensors on the two sides of each stage of filtering pore plate respectively detect liquid level signals on the two sides in real time, and send the liquid level signals on the two sides of the stage of filtering pore plate to the controller, the controller compares the received liquid level signals on the two sides with a preset liquid level threshold value after data conversion, and controls the combination and separation of the electromagnetic clutch on the driving chain wheel of the stage of filtering pore plate according to the comparison result; when the liquid level difference of the two sidesWhen the value is higher than the preset liquid level height difference threshold value, the controller controls the electromagnetic clutch on the driving chain wheel of the stage of filtering pore plate to be combined, and the stage of filtering pore plate is driven by the driving shaft to rotate; when the liquid level height difference value of the two sides is lower than a preset liquid level height difference threshold value, the controller controls the electromagnetic clutch on the driving chain wheel of the filter pore plate to separate, and then the filter pore plate stops rotating; the timer is in different preset time ranges, the controller controls the combination and the separation of the electromagnetic clutches on the driving chain wheels of different filter orifice plates, and the time T is1In a time interval, the controller controls the electromagnetic clutch of the two driving chain wheels of the primary filter orifice plate to be combined, and the primary filter orifice plate is driven by the driving shaft to rotate; at time T2In the time interval, the electromagnetic clutch of two drive sprocket of controller control second grade filtration orifice plate combines, makes this grade filtration orifice plate rotatory under the drive of drive shaft, analogizes in proper order, at TnIn the time interval, the controller controls the electromagnetic clutch of the two driving chain wheels of the nth stage filter orifice plate to be combined, and the nth stage filter orifice plate is driven by the driving shaft to rotate; at Tn+1In the time period, the electromagnetic clutch of the drive sprocket of all filtration pore plates of controller control combines, makes all filtration pore plates rotatory under the drive of drive shaft, and wherein the value of n is the same with the filter fineness quantity of filtration pore plate subassembly.
As a further optimization of the above scheme, the automatic control system further comprises an alarm and a display connected with the controller, and a current sensor, a voltage sensor or a rotation speed sensor connected with the controller is arranged on an output shaft of the motor; the controller is a Siemens S7-200 series controller or an S7-300 series controller; the current sensor, the voltage sensor or the rotating speed sensor is a Hall sensor; the alarm is a light flasher or a loudspeaker; the liquid level sensor is one of a float-type liquid level sensor, a static pressure type liquid level sensor, an ultrasonic liquid level sensor and an optical fiber liquid level sensor.
Adopt the utility model discloses a multistage filtration orifice plate grid of a tractor has following beneficial effect:
(1) the structure design is reasonable, through setting up a plurality of pore grids, and can realize 2 ~ 3 grades (also can be multistage, can specifically carry out reasonable selection its quantity according to actual design and use needs) filtration in an equipment, this grid adopts the interior inflow formula, and the grid filters the aperture and contains ten kinds of filter fineness of 1 ~ 10mm, can adopt the multiple configuration scheme of two-stage or tertiary filter fineness such as 10 (-6) - (-3), 8 (-4) - (-2), 6 (-3) - (-1), 10 (-4), 8 (-3), 6 (-2), can satisfy the demand of multiple use occasion.
(2) Utilize electrical components such as level sensor, time-recorder, current sensor, voltage sensor, rotational speed sensor, can effectively improve its work efficiency, reduce staff's working strength, the setting of cooperation back flush subassembly can effectively be washed the pore grid, improves its filtration efficiency and life.
Drawings
Fig. 1 is the utility model discloses a quick-witted multistage filtration orifice plate grid structure sketch map.
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1.
FIG. 3 is a schematic cross-sectional view B-B of FIG. 1.
Detailed Description
The multi-stage perforated plate grating of the present invention will be described in detail with reference to the attached drawings 1-3.
A one-machine multi-stage filter orifice plate grid comprises a frame 1, a filter screen plate assembly, a driving assembly and a grid slag squeezing spiral assembly; wherein the frame is provided with a sewage inlet, a sewage outlet and a grid slag outlet; the sewage inlet is arranged on the upstream surface of the rack; the sewage discharge port is positioned at two sides of the frame, and the grid slag discharge port is arranged at a slag discharge port 2 of the grid slag pressing spiral assembly; the filter screen plate assembly, the driving assembly and the grid slag squeezing spiral assembly are all arranged on the frame; the driving assembly is arranged at the middle upper part of the rack and comprises a speed reducing motor 3 and a main shaft, and an output shaft of the speed reducing motor is in key connection with the main shaft; the main shaft penetrates through the front part and the rear part of the frame, and main shaft supporting bearings are arranged at the front part and the rear part of the frame; the filter screen plate assembly comprises at least three stages of filter screen plates 4, 5 and 6 with different filter precisions, each stage of filter screen plate is a group of annular multi-row chain structures connected end to end, the first stage of filter screen plate 4 is arranged at the innermost part of the frame, the second stage of filter screen plate 5 is arranged at the outer part of the first stage of filter screen plate, the third stage of filter screen plate 6 is arranged at the outer part of the second stage of filter screen plate, and the rest is done in turn; wherein, the annular upper part of the annular multi-row chain structure of the first-stage filter screen plate is hung on two first driving chain wheels 7 arranged at different positions on the main shaft, and the rotating radius of the first-stage filter screen plate is the minimum; the annular upper parts of the annular multi-row chain structures of the secondary filter screen plates are also hung on two second driving chain wheels 8 arranged on the main shaft in the same way, the annular upper parts of the annular multi-row chain structures of the tertiary filter screen plates are also hung on two third driving chain wheels 9 arranged on the main shaft in the same way, the two second chain wheels are respectively and correspondingly arranged at the outer sides of the two first chain wheels, the radius of the second chain wheel is larger than that of the first chain wheel, the two third chain wheels are respectively and correspondingly arranged at the outer sides of the two second chain wheels, the radius of the third chain wheel is larger than that of the second chain wheel, and so on; the annular multi-row chain structure of each stage of filter screen plate is only hung on two driving chain wheels arranged on a main shaft at the upper part, no rotating chain wheel is arranged at the lower part, and the screen plate realizes steering rotation at the lower part by virtue of guide rail grooves fixed on a front panel and a rear panel of a frame; the grid slag squeezing spiral component is positioned in the frame and is arranged at the middle-upper position in the primary filter screen plate; the grid slag squeezing screw assembly comprises a transmission chain, a primary transmission chain wheel, a screw shaft 11, a squeezing pipe 12, U-shaped filter screen plates and collecting tanks 13, wherein the collecting tanks are respectively arranged inside each group of filter screen plates; the U-shaped filter screen plate is arranged at the lower part of the slag collecting plate of the innermost filter screen plate, namely the inner central grid slag collecting tank; the spiral shaft is arranged on the inner surface of the innermost central grid slag collecting tank; the squeezing pipe is arranged at the slag discharge port; the main shaft of the driving assembly is also provided with a screen plate driving chain wheel and an electromagnetic clutch 14, the driving chain is respectively connected with a screw shaft driving chain wheel and a screw shaft driven chain wheel, and the electromagnetic clutch is respectively arranged on each screen plate driving chain wheel and the driving chain wheel of the grid slag squeezing screw assembly.
The multi-stage filtering pore plate grille of the machine also comprises a back washing component, wherein the back washing component 10 is arranged at the upper part of each annular pore plate component and is connected with a back washing water pump through a water pipe; the back washing component comprises a back washing water pipe and fan-shaped washing nozzles uniformly arranged on the pipe wall.
The automatic control system comprises a controller, a timer and/or liquid level sensors arranged on two sides of each stage of filtering pore plate, the controller is respectively connected with the timer and the liquid level sensors on two sides of each stage of filtering pore plate, and is also connected with a transmission chain wheel of each stage of filtering pore plate and an electromagnetic clutch on a spiral shaft of the grid slag squeezing spiral assembly; the liquid level sensors on the two sides of each stage of filtering pore plate respectively detect liquid level signals on the two sides in real time, and send the liquid level signals on the two sides of the stage of filtering pore plate to the controller, the controller compares the received liquid level signals on the two sides with a preset liquid level threshold value after data conversion, and controls the combination and separation of the electromagnetic clutch on the driving chain wheel of the stage of filtering pore plate according to the comparison result; when the liquid level height difference value of the two sides is higher than a preset liquid level height difference threshold value, the controller controls the electromagnetic clutch on the driving chain wheel of the stage of filtering pore plate to be combined, and the stage of filtering pore plate is driven by the driving shaft to rotate; when the liquid level height difference value of the two sides is lower than a preset liquid level height difference threshold value, the controller controls the electromagnetic clutch on the driving chain wheel of the filter pore plate to separate, and then the filter pore plate stops rotating; the timer is in different preset time ranges, the controller controls the combination and the separation of the electromagnetic clutches on the driving chain wheels of different filter orifice plates, and the time T is1In a time interval, the controller controls the electromagnetic clutch of the two driving chain wheels of the primary filter orifice plate to be combined, and the primary filter orifice plate is driven by the driving shaft to rotate; at time T2In the time interval, the electromagnetic clutch of two drive sprocket of controller control second grade filtration orifice plate combines, makes this grade filtration orifice plate rotatory under the drive of drive shaft, analogizes in proper order, at TnIn the time interval, the controller controls the electromagnetic clutch of the two driving chain wheels of the nth stage filter orifice plate to be combined, and the nth stage filter orifice plate is driven by the driving shaft to rotate; at Tn+1Time periodIn, the electromagnetic clutch of the drive sprocket of all filtration orifice plates of controller control combines, makes all filtration orifice plates rotatory under the drive of drive shaft, and wherein the value of n is the same with the filter fineness quantity of filtration orifice plate subassembly.
The automatic control system also comprises an alarm and a display which are connected with the controller, wherein a current sensor, a voltage sensor or a rotating speed sensor which is connected with the controller is arranged on an output shaft of the motor, the current sensor, the voltage sensor or the rotating speed sensor sends motor current, voltage and rotating speed signals which are detected in real time to the controller, the controller compares the received real-time motor current, voltage and rotating speed signals with preset motor current threshold values, voltage threshold values and rotating speed threshold values after data conversion, and the alarm is controlled to send alarm prompt signals according to the comparison result; when the current, voltage and rotating speed values of the real-time motor are higher than the preset current threshold value, voltage threshold value and rotating speed threshold value of the motor, the controller controls the alarm to send out an alarm prompt signal; otherwise, the message is not sent out; the display is a liquid crystal display and is used for displaying the liquid level value, the real-time motor current, the voltage and the rotating speed value of the two sides of each fine-hole grid filtering hole. The controller is a Siemens S7-200 series controller or an S7-300 series controller; the current sensor, the voltage sensor or the rotating speed sensor is a Hall sensor; the alarm is a light flasher or a loudspeaker; the liquid level sensor is one of a float-type liquid level sensor, a static pressure type liquid level sensor, an ultrasonic liquid level sensor and an optical fiber liquid level sensor.
The utility model discloses the theory of operation of above-mentioned a quick-witted multistage filtration orifice plate grid as follows:
1) sewage to be treated enters the filtering pore plate grid assembly through the sewage inlet, is filtered by each fine pore grid and then is discharged from the sewage outlet;
2) the slag is intercepted by the pore plates of the fine-pore grids, and when the liquid level height difference value detected in real time by the liquid level sensors on the two sides of each precision filter pore plate component is higher than a preset liquid level height difference threshold value or the timer is positioned in different preset time periods, the controller controls the driving groupThe motor of the filter element is started to operate, the electromagnetic clutches on the two driving chain wheels of the filter orifice plate component are controlled to be combined, the filter orifice plate component is driven by the driving shaft to rotate, and slag is brought to the upper part of the equipment by the orifice plate; otherwise, the filtering pore plate of the stage does not rotate; when the liquid level height difference value of the two sides is higher than a preset liquid level height difference threshold value, the controller controls the electromagnetic clutch on the driving chain wheel of the stage of filtering pore plate to be combined, and the stage of filtering pore plate is driven by the driving shaft to rotate; when the liquid level height difference value of the two sides is lower than a preset liquid level height difference threshold value, the controller controls the electromagnetic clutch on the driving chain wheel of the filter pore plate to separate, and then the filter pore plate stops rotating; the timer is in different preset time ranges, the controller controls the combination and the separation of the electromagnetic clutches on the driving chain wheels of different filter orifice plates, and the time T is1In a time interval, the controller controls the electromagnetic clutch of the two driving chain wheels of the primary filter orifice plate to be combined, and the primary filter orifice plate is driven by the driving shaft to rotate; at time T2In the time interval, the electromagnetic clutch of two drive sprocket of controller control second grade filtration orifice plate combines, makes this grade filtration orifice plate rotatory under the drive of drive shaft, analogizes in proper order, at TnIn the time interval, the controller controls the electromagnetic clutch of the two driving chain wheels of the nth stage filter orifice plate to be combined, and the nth stage filter orifice plate is driven by the driving shaft to rotate; at Tn+1In the time interval, the controller controls the electromagnetic clutches of the driving chain wheels of all the filter orifice plates to be combined, and all the filter orifice plates are driven to rotate by the driving shaft;
3) the back washing assembly arranged on each stage of filter pore plate assembly is utilized to control a back washing water pump of the back washing assembly to supply water, back washing water is vertically sprayed on the outer surface of each stage of filter pore plate assembly and penetrates through meshes, grid slag intercepted on the inner surface of a corresponding filter pore plate falls into a collecting tank along with washing water and is guided to a slag collecting tank with a U-shaped filter pore plate and a spiral shaft arranged at the innermost part by a slag guide plate, the grid slag is conveyed to a grid slag outlet by the spiral shaft, and a squeezing pipe is used for squeezing and dehydrating the grid slag, and water flows to the interior of a grid through the filter pore plate.
The embodiments described above are intended to facilitate one of ordinary skill in the art to understand and practice the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments herein, and those skilled in the art should understand that modifications and alterations made without departing from the scope of the present invention are within the protection scope of the present invention.
Claims (4)
1. The utility model provides a multistage filtration orifice plate grid of a tractor which characterized in that: the multi-stage filter orifice plate grating of the machine comprises a frame (1), a filter screen plate component, a driving component and a grating slag pressing spiral component; the frame is provided with a sewage inlet, a sewage outlet and a grid slag outlet; the sewage inlet is arranged on the upstream surface of the rack; the sewage discharge port is positioned at two sides of the frame, and the grid slag discharge port is arranged at a slag discharge port (2) of the grid slag pressing spiral assembly; the filter screen plate assembly, the driving assembly and the grid slag squeezing spiral assembly are all arranged on the frame; the driving assembly is arranged at the middle upper part of the rack and comprises a speed reducing motor (3) and a main shaft, and an output shaft of the speed reducing motor is in key connection with the main shaft; the main shaft penetrates through the front part and the rear part of the frame, and main shaft supporting bearings are arranged at the front part and the rear part of the frame; the filter screen plate assembly comprises at least three stages of filter screen plates (4, 5, 6) with different filter precisions, each stage of filter screen plate is a group of annular multi-row chain structures connected end to end, the first stage of filter screen plate (4) is arranged at the innermost part of the frame, the second stage of filter screen plate (5) is arranged at the outer part of the first stage of filter screen plate, the third stage of filter screen plate (6) is arranged at the outer part of the second stage of filter screen plate, and the rest is done in sequence; wherein, the annular upper part of the annular multi-row chain structure of the first-stage filter screen plate is hung on two first driving chain wheels (7) arranged at different positions on the main shaft, and the rotating radius of the first-stage filter screen plate is the minimum; the annular upper parts of the annular multi-row chain structures of the secondary filter screen plates are also hung on two second driving chain wheels (8) arranged on the main shaft in the same way, the annular upper parts of the annular multi-row chain structures of the tertiary filter screen plates are also hung on two third driving chain wheels (9) arranged on the main shaft in the same way, the two second chain wheels are respectively and correspondingly arranged at the outer sides of the two first chain wheels, the radius of each second chain wheel is larger than that of each first chain wheel, the two third chain wheels are respectively and correspondingly arranged at the outer sides of the two second chain wheels, the radius of each third chain wheel is larger than that of each second chain wheel, and so on; the annular multi-row chain structure of each stage of filter screen plate is only hung on two driving chain wheels arranged on a main shaft at the upper part, no rotating chain wheel is arranged at the lower part, and the screen plate realizes steering rotation at the lower part by virtue of guide rail grooves fixed on a front panel and a rear panel of a frame; the grid slag squeezing spiral component is positioned in the frame and is arranged at the middle-upper position in the primary filter screen plate; the grid slag squeezing screw assembly comprises a transmission chain, a primary transmission chain wheel, a screw shaft (11), a squeezing pipe (12), U-shaped filter screen plates and collecting tanks (13), wherein the collecting tanks are respectively arranged in each group of filter screen plates; the U-shaped filter screen plate is arranged at the lower part of the slag collecting plate of the innermost filter screen plate, namely the inner central grid slag collecting tank; the spiral shaft is arranged on the inner surface of the innermost central grid slag collecting tank; the squeezing pipe is arranged at the slag discharge port; and a screen plate transmission chain wheel and an electromagnetic clutch (14) are further arranged on a main shaft of the driving assembly, the transmission chain is respectively connected with a screw shaft transmission driving chain wheel and a screw shaft driven chain wheel, and the electromagnetic clutch is respectively arranged on each screen plate transmission chain wheel and the driving chain wheel of the grid slag squeezing screw assembly.
2. A multiple stage screen aperture plate grid as claimed in claim 1, wherein: the multi-stage filtering pore plate grille of the machine also comprises a back washing component, and the back washing component (10) is arranged at the upper part of each annular pore plate component and is connected with a back washing water pump through a water pipe; the back washing component comprises a back washing water pipe and fan-shaped washing nozzles uniformly arranged on the pipe wall.
3. A multiple stage screen aperture plate grid as claimed in claim 2, wherein: the multi-stage filter pore plate grid of the machine also comprises an automatic control system, wherein the automatic control system comprises a controller, a timer andthe controller is respectively connected with the timer and the liquid level sensors on the two sides of each stage of filtering pore plate, and is also connected with a transmission chain wheel of each stage of filtering pore plate and an electromagnetic clutch on a spiral shaft of the grid slag squeezing spiral assembly; the liquid level sensors on the two sides of each stage of filtering pore plate respectively detect liquid level signals on the two sides in real time, and send the liquid level signals on the two sides of the stage of filtering pore plate to the controller, the controller compares the received liquid level signals on the two sides with a preset liquid level threshold value after data conversion, and controls the combination and separation of the electromagnetic clutch on the driving chain wheel of the stage of filtering pore plate according to the comparison result; when the liquid level height difference value of the two sides is higher than a preset liquid level height difference threshold value, the controller controls the electromagnetic clutch on the driving chain wheel of the stage of filtering pore plate to be combined, and the stage of filtering pore plate is driven by the driving shaft to rotate; when the liquid level height difference value of the two sides is lower than a preset liquid level height difference threshold value, the controller controls the electromagnetic clutch on the driving chain wheel of the filter pore plate to separate, and then the filter pore plate stops rotating; the timer is in different preset time ranges, the controller controls the combination and the separation of the electromagnetic clutches on the driving chain wheels of different filter orifice plates, and the time T is1In a time interval, the controller controls the electromagnetic clutch of the two driving chain wheels of the primary filter orifice plate to be combined, and the primary filter orifice plate is driven by the driving shaft to rotate; at time T2In the time interval, the electromagnetic clutch of two drive sprocket of controller control second grade filtration orifice plate combines, makes this grade filtration orifice plate rotatory under the drive of drive shaft, analogizes in proper order, at TnIn the time interval, the controller controls the electromagnetic clutch of the two driving chain wheels of the nth stage filter orifice plate to be combined, and the nth stage filter orifice plate is driven by the driving shaft to rotate; at Tn+1In the time period, the electromagnetic clutch of the drive sprocket of all filtration pore plates of controller control combines, makes all filtration pore plates rotatory under the drive of drive shaft, and wherein the value of n is the same with the filter fineness quantity of filtration pore plate subassembly.
4. A multiple stage screen aperture plate grid as claimed in claim 3, wherein: the automatic control system also comprises an alarm and a display which are connected with the controller, and a current sensor, a voltage sensor or a rotating speed sensor which is connected with the controller is arranged on an output shaft of the motor; the controller is a Siemens S7-200 series controller or an S7-300 series controller; the current sensor, the voltage sensor or the rotating speed sensor is a Hall sensor; the alarm is a light flasher or a loudspeaker; the liquid level sensor is one of a float-type liquid level sensor, a static pressure type liquid level sensor, an ultrasonic liquid level sensor and an optical fiber liquid level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922073707.6U CN211141571U (en) | 2019-11-26 | 2019-11-26 | One-machine multi-stage filtering pore plate grid |
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| CN201922073707.6U CN211141571U (en) | 2019-11-26 | 2019-11-26 | One-machine multi-stage filtering pore plate grid |
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| CN211141571U true CN211141571U (en) | 2020-07-31 |
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| CN201922073707.6U Withdrawn - After Issue CN211141571U (en) | 2019-11-26 | 2019-11-26 | One-machine multi-stage filtering pore plate grid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110950392A (en) * | 2019-11-26 | 2020-04-03 | 北京北排装备产业有限公司 | One-machine multi-stage filtering pore plate grid and use method thereof |
| CN112426791A (en) * | 2020-11-06 | 2021-03-02 | 广东首汇蓝天工程科技有限公司 | Influent stream grid dirt separator and sewage pretreatment system in bilayer |
-
2019
- 2019-11-26 CN CN201922073707.6U patent/CN211141571U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110950392A (en) * | 2019-11-26 | 2020-04-03 | 北京北排装备产业有限公司 | One-machine multi-stage filtering pore plate grid and use method thereof |
| CN110950392B (en) * | 2019-11-26 | 2024-05-07 | 北京北排装备产业有限公司 | Multi-stage filtering orifice plate grid and application method thereof |
| CN112426791A (en) * | 2020-11-06 | 2021-03-02 | 广东首汇蓝天工程科技有限公司 | Influent stream grid dirt separator and sewage pretreatment system in bilayer |
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