CN217139960U - Dynamic vertical double-shaft rotating disc ceramic membrane device - Google Patents
Dynamic vertical double-shaft rotating disc ceramic membrane device Download PDFInfo
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- CN217139960U CN217139960U CN202123295510.0U CN202123295510U CN217139960U CN 217139960 U CN217139960 U CN 217139960U CN 202123295510 U CN202123295510 U CN 202123295510U CN 217139960 U CN217139960 U CN 217139960U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model discloses a rotatory disc ceramic membrane device of vertical biax of developments, including a vertical rotatory disc ceramic membrane unit, a pneumatic conveying pump, a backwash tank and a control assembly. The utility model discloses be equipped with the biax system, the diaphragm is crisscross mutually, and crisscross diaphragm can effectively slow down the diaphragm pollution of nearly centre of a circle department, and the biax revolves to the same, can improve relative shearing linear velocity, reduces the rotational speed to a certain extent (reaches unipolar shear line speed), also can slow down the unbalanced problem of diaphragm pollution. The utility model discloses a rotatory hollow shaft passes through synchronizing wheel and hold-in range and speed reducer transmission, and the synchronizing wheel is located same horizontal plane with the speed reducer synchronizing wheel, and because of the synchronizing wheel is small light in weight, can effectively reduce the equipment fixing and dismantle the degree of difficulty.
Description
Technical Field
The utility model particularly relates to a rotatory disc ceramic membrane device of vertical biax of developments.
Background
The dynamic membrane filtration technology mainly depends on the rotation of a mechanical impeller or the relative rotation between paired staggered filtration membranes to realize the application of tangential force on a filtration surface so as to limit or prevent the formation of a filter cake on the filtration surface. The rotary disk membrane is made of an inorganic ceramic membrane material, and has the advantages of long service life, back flushing capability, high medicament concentration tolerance and the like. Compared with the tubular ceramic membrane, the tubular ceramic membrane scours the membrane surface at a flow speed of 2-5m/s (the flow speed is provided for the pumped flow) in the operation process, the shear rate of the membrane surface of the rotary disk membrane (the shear rate is provided for the rotating speed of the motor) reaches the same speed or higher flow speed, the energy consumption is only one third of that of the tubular membrane, and the energy consumption is greatly reduced.
Because the rotary disk membrane has the advantages, a great deal of research is carried out in domestic and foreign universities and enterprises and public institutions, and the research is mainly carried out on the contents of different pore diameters, performances, pollution principles, application and exploration of the rotary disk membrane and the like. However, compared with other types of membrane devices, the rotary disk membrane device and the diaphragm are relatively complex to manufacture, and have high industrialization difficulty and high access threshold. Therefore, a dynamic filtration rotating disc membrane experiment testing device which is clear in structure and convenient to mount and dismount is needed, and the testing device is provided for subsequent scientific research and industrial application.
CN107213800A discloses a novel cross-flow rotating ceramic membrane system, in which the ceramic membrane set is vertically upward, and if the tank body is disassembled for cleaning, the residues in the tank body easily contaminate the components below. And the space of the upper layer and the lower layer is smaller, and certain difficulty exists in the connection of the parts between the upper layer and the lower layer and the installation of the joint. The direct drive of the reducer directly determines the complexity of the connection and sealing between the shaft and the equipment casing, and presents great installation difficulties and the possibility of leakage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art defect, provide a rotatory disc ceramic membrane device of vertical biax of developments.
The utility model discloses a concrete technical scheme as follows:
a dynamic vertical double-shaft rotating disc ceramic membrane device comprises a vertical rotating disc ceramic membrane unit, a pneumatic material conveying pump, a backwashing tank I and a control assembly,
the vertical rotary disc ceramic membrane unit comprises a membrane unit cavity, two rotary hollow shafts, a plurality of rotary disc ceramic membranes, a driving motor and a speed reducer; the upper part of the membrane unit cavity is provided with a concentrated solution outlet, and the lower part of the membrane unit cavity is provided with a feeding hole; the two rotary hollow shafts are vertically arranged in the cavity of the membrane unit, the upper part of each rotary hollow shaft is parallelly and hermetically sleeved with a plurality of rotary disc ceramic membranes, the inner cavity of each rotary hollow shaft is communicated with the inner flow channels of the rotary disc ceramic membranes, the rotary disc ceramic membranes on the two adjacent rotary hollow shafts are staggered and parallel with each other, the lower part of each rotary hollow shaft penetrates through the lower end of the cavity of the membrane unit through a mechanical sealing element and a bearing, a driven wheel is arranged on each rotary hollow shaft, and the bearing is in interference fit with the lower part of the rotary hollow shaft; the driving motor is connected with a driving wheel through a speed reducer in a transmission way, the driving wheel and the driven wheel are positioned on the same plane, and the driving wheel and the driven wheel are connected through a synchronous belt in a transmission way, so that the two hollow rotating shafts rotate in the same direction, and the driving motor, the speed reducer and the driving wheel are staggered with the vertical projection of the cavity of the membrane unit;
the pneumatic conveying pump is communicated with a feed inlet of the cavity of the membrane unit through a feed regulating valve, the feed inlet is also communicated with a discharge valve, and a concentrated solution outlet of the cavity of the membrane unit is provided with a concentrated solution discharge valve; the inner cavities of the two rotary hollow shafts are communicated with a pneumatic dialysate valve through two rotary joints; the backwashing tank is provided with a tank body and a pneumatic piston rod which is arranged in the tank body in a sliding manner, and the tank body of the backwashing tank is communicated with the inner cavities of the two rotary hollow shafts through the two rotary joints;
the control assembly comprises a control unit, an air compressor, a pneumatic triple piece, a two-position three-way electromagnetic valve and a three-position five-way reversing electromagnetic valve, the air compressor is communicated with the two-position three-way electromagnetic valve and the three-position five-way reversing electromagnetic valve through the pneumatic triple piece, the control unit is electrically connected with the speed reducer, the air compressor, the two-position three-way electromagnetic valve and the three-position five-way reversing electromagnetic valve, the air compressor is pneumatically connected with the pneumatic material conveying pump and the pneumatic dialysate valve through the pneumatic triple piece and the two-position three-way electromagnetic valve, and is pneumatically connected with a pneumatic piston rod of the backwashing tank through the pneumatic triple piece and the three-position five-way reversing electromagnetic valve.
In a preferred embodiment of the present invention, an intermediate sealing member is disposed between the plurality of rotating disk ceramic membranes on the same rotating hollow shaft, and a tip sealing member is disposed at the upper end of the rotating hollow shaft, so that the intermediate sealing member and the tip sealing member enable the plurality of rotating disk ceramic membrane parallel sealing sleeves to be disposed on the rotating hollow shaft.
Further preferably, the spacing between the ceramic membranes of the staggered adjacent rotating discs is greater than or equal to 1.0mm and less than 4.0 mm.
Further preferably, the horizontal distance between the rotary disk ceramic membrane on one rotary hollow shaft and the middle sealing piece and the end sealing piece on the other rotary hollow shaft is greater than or equal to 2.0mm and less than 5.0 mm.
In a preferred embodiment of the present invention, the lower end of the cavity of the membrane unit is sealed by a lower cover, and the lower part of each rotary hollow shaft penetrates through the lower cover through a mechanical sealing element and a bearing.
Further preferably, the feed inlet is formed in the lower cover.
The utility model has the advantages that:
1. the utility model discloses be equipped with the biax system, the diaphragm is crisscross mutually, and crisscross diaphragm can effectively slow down the diaphragm pollution of nearly centre of a circle department, and the biax revolves to the same, can improve relative shearing linear velocity, reduces the rotational speed to a certain extent (reaches unipolar shear line speed), also can slow down the unbalanced problem of diaphragm pollution.
2. The utility model discloses a rotatory hollow shaft passes through synchronizing wheel and hold-in range and speed reducer transmission, and rotatory hollow shaft synchronizing wheel is located same horizontal plane with the speed reducer synchronizing wheel, and because of the synchronizing wheel is small light in weight, can effectively reduce the equipment fixing and dismantle the degree of difficulty.
3. The utility model discloses a bearing pair rotation hollow shaft is fixed, and both adopt interference fit, have reduced the oscillating quantity of rotation hollow shaft, have prevented to cause the damage of rotating disc ceramic membrane because of the oscillating quantity is too big.
4. The utility model discloses a driving motor, speed reducer and action wheel all stagger with the vertical projection of membrane unit cavity for rotating disc ceramic membrane and speed reducer are not in on the same vertical plane, in the middle of dismantling, abluent process, because the speed reducer is not in under the membrane unit cavity, and the retentate is difficult for polluting or corroding the motor in rotating disc ceramic membrane and the membrane unit cavity, and can ensure the power consumption safety at to a great extent.
5. The utility model discloses a cylinder backwashing tank carries out the backwash, stretches out the liquid ejecting backwash that carries out in the piston rod will backwash tank through the cylinder.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention will be further illustrated and described below with reference to the accompanying drawings by means of specific embodiments.
As shown in figure 1, the dynamic vertical double-shaft rotating disc ceramic membrane device comprises a vertical rotating disc ceramic membrane unit 1, a pneumatic conveying pump 2, a backwashing tank 3 and a control component 4,
the vertical rotary disc ceramic membrane unit 1 comprises a membrane unit cavity 10, two rotary hollow shafts 11, a plurality of rotary disc ceramic membranes 12, a driving motor 13 and a speed reducer 14; the upper part of the membrane unit cavity 10 is provided with a concentrated solution outlet, and the lower part is provided with a feeding hole; two rotary hollow shafts 11 are vertically arranged in the membrane unit cavity 10, the upper part of each rotary hollow shaft 11 is parallelly and hermetically sleeved with a plurality of rotary disc ceramic membranes 12, the inner cavity of each rotary hollow shaft 11 is communicated with the internal flow channels of the plurality of rotary disc ceramic membranes 12, the rotary disc ceramic membranes 12 on two adjacent rotary hollow shafts 11 are staggered and parallel with each other, the lower part of each rotary hollow shaft 11 penetrates through the lower end of the membrane unit cavity 10 through a mechanical sealing element 18 and a bearing 19, and a driven wheel 15 is arranged, and the bearing 19 is in interference fit with the lower part of the rotary hollow shaft 11 (the swinging amount of the rotary hollow shaft 11 is reduced, and the damage of the rotary disc ceramic membranes 12 caused by overlarge swinging amount is prevented); the driving motor 13 is in transmission connection with a driving wheel 16 through a speed reducer 14, the driving wheel 16 and the driven wheel 15 are positioned on the same plane, and are in transmission connection with the driven wheel 15 through a synchronous belt 17, so that the two rotary hollow shafts 11 rotate in the same direction, and the driving motor 13, the speed reducer 14 and the driving wheel 16 are staggered with the vertical projection of the film unit cavity 10; the speed reducer 14 is a four-stage motor, the rotating speed range of the motor is controlled to be 0-1500RPM through a frequency converter, the speed ratio is 3.0, and therefore the output rotating speed of the rotating speed machine 7 is 0-500 RPM. The driving wheel 16 and the driven wheel 15 have the same number of teeth, and need to be more than 17.
A middle sealing piece 111 is arranged between the plurality of rotary disk ceramic membranes 12 on the same rotary hollow shaft 11, an end sealing piece 112 is arranged at the upper end of the rotary hollow shaft 11, and the middle sealing piece 111 and the end sealing piece 112 enable the plurality of rotary disk ceramic membranes 12 to be arranged on the rotary hollow shaft 11 in a sealing and sealing manner in parallel; the distance between the staggered adjacent rotary disk ceramic membranes 12 is larger than or equal to 1.0mm and smaller than 4.0mm, the horizontal distance between the rotary disk ceramic membrane 12 on one rotary hollow shaft 11 and the horizontal distance between the middle sealing piece 111 and the end sealing piece 112 on the other rotary hollow shaft 11 is larger than or equal to 2.0mm and smaller than 5.0mm, and mainly because the two rotary hollow shafts 11 swing to a certain extent in the rotating process, if the horizontal distances between the diaphragms of the rotary disk ceramic membranes 12 and between the diaphragms and between the middle sealing piece 111 and the end sealing piece 112 are too small, the diaphragms are easily damaged, and if the distances are too large, the double-shaft anti-pollution effect is weakened.
Preferably, the lower end of the membrane unit cavity 10 is provided with a lower cover 101 through a fast-assembling clamp and a sealing ring sealing cover, the lower part of each rotary hollow shaft 11 penetrates through the lower cover 101 through a mechanical sealing element 18 and a bearing 19, and the feed inlet is arranged on the lower cover 101.
The pneumatic material conveying pump 2 (the suction range is 4-6m, the working pressure can reach 7bar) is communicated with a feeding hole of the membrane unit cavity 10 through a feeding adjusting valve 21, and the feeding hole is also communicated with a discharge valve 102; the pneumatic material conveying pump 2 can convey material liquid into the membrane unit cavity 10, and can adjust the feeding flow rate by adjusting the opening degrees of the feeding adjusting valve 21 and the discharging valve 102. And after the experiment is finished, the feed liquid in the membrane unit cavity 10 can be drained through the drain valve 102.
The concentrate outlet of the membrane unit chamber 10 is provided with a concentrate discharge valve 103. In the filtering process, the membrane inlet pressure in the membrane unit cavity 10 can be controlled by adjusting the opening degree of the concentrated solution discharge valve 103, and meanwhile, the cross flow rate can also be adjusted. During filtration, the concentrate discharge valve 103 opening cannot be completely closed because during backwashing, the unit is also the feed discharge outlet for backwashing. If the membrane unit is completely closed, the pressure inside the membrane unit cavity 10 is suppressed, which will weaken the backwashing effect
The inner cavities of the two rotary hollow shafts 11 are communicated with a pneumatic dialysate valve 114 through two rotary joints 113; the backwashing tank 3 is provided with a tank body 30 and a pneumatic piston rod 31 which is arranged in the tank body 30 in a sliding way, and the tank body 30 of the backwashing tank 3 is communicated with the inner cavities of the two rotary hollow shafts 11 through the two rotary joints 113; the permeate enters the rotary hollow shaft 11 from the rotary disk ceramic membrane 12 and is finally produced from the rotary joint 113, is stored in the backwash tank 3, overflows from the backwash tank 3 after being fully stored, and finally flows out from the dialysate outlet. During filtering, the pneumatic piston rod 31 of the backwashing tank 3 contracts, the backwashing tank 3 can store water, the volume of the tank body 30 of the backwashing tank 3 is 1% -10% of the total amount of the permeating liquid in a single filtering period, and the recovery rate can be ensured to be more than 90%. The rotary joint 113 rotates for 360 degrees, can resist pressure of 10bar, and has the rotating speed lower than 1000 RPM. During backwashing, the pneumatic piston rod 31 extends out to quickly push out the stored water in the backwashing tank 3, and the stored water quickly flows into the rotary joint 113 and the rotary hollow shaft 11 to backwash the rotary disc ceramic membrane 12.
The control component 4 comprises a control unit (not shown in the figure), an air compressor 41, a pneumatic triplet 42, a two-position three-way electromagnetic valve 44 and a three-position five-way reversing electromagnetic valve 43, wherein the air compressor 41 is communicated with the two-position three-way electromagnetic valve 44 and the three-position five-way reversing electromagnetic valve 43 through the pneumatic triplet 42, the control unit is electrically connected with the driving motor 13, the speed reducer 14, the air compressor 41, the two-position three-way electromagnetic valve 44 and the three-position five-way reversing electromagnetic valve 43, the air compressor 41 is pneumatically connected with the pneumatic material conveying pump 2 and the pneumatic dialysate valve 114 through the pneumatic triplet 42 and the two-position three-way electromagnetic valve 44, and is pneumatically connected with the pneumatic piston rod 31 of the backwashing tank 3 through the pneumatic triplet 42 and the three-position five-way reversing electromagnetic valve 43. During filtration, the two-position three-way solenoid valve 44 is energized, and the pneumatic feed pump 2 and the pneumatic dialysate valve are driven by gas. The expansion and contraction of the pneumatic piston rod 31 in the backwash tank 3 is controlled by a three-position five-way reversing solenoid valve 43. Wherein the rotational speed output of the speed reducer 14 can be controlled by adjusting the frequency of the frequency converter, and meanwhile, the control unit is provided with a rotational speed indicating function, automatic and manual control functions and the like, and is also provided with an indicator lamp for respectively indicating the filtering state and the backwashing state. Preferably, the speed reducer 14 and the air compressor 41 adopt a 220V power supply, the two-position three-way electromagnetic valve 44 and the three-position five-way reversing electromagnetic valve 43 adopt a 24V power supply for control, wherein the air compressor 41 can be an external device or can be directly connected with an external air supply instead, so that the risks of electric shock, electric leakage and the like are greatly reduced, and the electricity utilization safety is further ensured.
The utility model discloses a working process as follows:
and (3) filtering: the speed reducer 14 and the air compressor 41 are powered on, the rotation and air supply state is kept, and the air compressor 41 can be directly connected to a factory air source to supply air without adopting the air compressor 41. The three-position five-way reversing electromagnetic valve 43 is powered off, the pneumatic piston rod 31 is contracted, and the tank body 30 of the backwashing tank 3 stores water. The two-position three-way electromagnetic valve 44 is electrified to be connected with the air source, the pneumatic material conveying pump 2 is driven to start, and the pneumatic dialysate valve 114 is opened.
Backwashing: the speed reducer 14 and the air compressor 41 are powered on, and the rotation and air supply states are kept. First, the two-position three-way solenoid valve 44 is de-energized, the pneumatic feed pump 2 stops operating, and the pneumatic dialysate valve 114 is closed. After delaying for 5s, the three-position five-way reversing electromagnetic valve 43 is electrified, and the pneumatic piston rod 31 ejects the stored water in the tank body 30 of the backwashing tank 3 for backwashing.
After a batch experiment is completed, if cleaning is to be performed, the discharge valve 102 can be opened to drain the materials in the membrane unit cavity 10, then the feed liquid sucked by the feed port is replaced by cleaning water, and the surface of the rotary disk ceramic membrane 12, the rotary hollow shaft 11, the backwashing tank 3 and the associated valves and pipelines are washed until the dialysate outlet and the concentrate outlet are consistent with the cleaning water. After the initial cleaning, chemical agents NaOH, citric acid and sodium hypochlorite can be respectively added for cleaning.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (6)
1. The utility model provides a rotatory disc ceramic membrane device of vertical biax of developments which characterized in that: comprises a vertical rotary disc ceramic membrane unit, a pneumatic material conveying pump, a backwashing tank I and a control component,
the vertical rotary disc ceramic membrane unit comprises a membrane unit cavity, two rotary hollow shafts, a plurality of rotary disc ceramic membranes, a driving motor and a speed reducer; the upper part of the membrane unit cavity is provided with a concentrated solution outlet, and the lower part of the membrane unit cavity is provided with a feeding hole; the two rotary hollow shafts are vertically arranged in the cavity of the membrane unit, the upper part of each rotary hollow shaft is parallelly and hermetically sleeved with a plurality of rotary disc ceramic membranes, the inner cavity of each rotary hollow shaft is communicated with the inner flow channels of the rotary disc ceramic membranes, the rotary disc ceramic membranes on the two adjacent rotary hollow shafts are staggered and parallel with each other, the lower part of each rotary hollow shaft penetrates through the lower end of the cavity of the membrane unit through a mechanical sealing element and a bearing, a driven wheel is arranged on each rotary hollow shaft, and the bearing is in interference fit with the lower part of the rotary hollow shaft; the driving motor is in transmission connection with a driving wheel through a speed reducer, the driving wheel and the driven wheel are positioned on the same plane, and the driving wheel is in transmission connection with the driven wheel through a synchronous belt, so that the two rotary hollow shafts rotate in the same direction, and the driving motor, the speed reducer and the driving wheel are staggered with the vertical projection of the cavity of the membrane unit;
the pneumatic material conveying pump is communicated with a feed inlet of the cavity of the membrane unit through a feed regulating valve, the feed inlet is also communicated with a discharge valve, and a concentrated solution outlet of the cavity of the membrane unit is provided with a concentrated solution discharge valve; the inner cavities of the two rotary hollow shafts are communicated with a pneumatic dialysate valve through two rotary joints; the backwashing tank is provided with a tank body and a pneumatic piston rod which is arranged in the tank body in a sliding manner, and the tank body of the backwashing tank is communicated with the inner cavities of the two rotary hollow shafts through the two rotary joints;
the control assembly comprises a control unit, an air compressor, a pneumatic triple piece, a two-position three-way electromagnetic valve and a three-position five-way reversing electromagnetic valve, the air compressor is communicated with the two-position three-way electromagnetic valve and the three-position five-way reversing electromagnetic valve through the pneumatic triple piece, the control unit is electrically connected with the speed reducer, the air compressor, the two-position three-way electromagnetic valve and the three-position five-way reversing electromagnetic valve, the air compressor is pneumatically connected with the pneumatic material conveying pump and the pneumatic dialysate valve through the pneumatic triple piece and the two-position three-way electromagnetic valve, and is pneumatically connected with a pneumatic piston rod of the backwashing tank through the pneumatic triple piece and the three-position five-way reversing electromagnetic valve.
2. A dynamic vertical biaxial rotary disk ceramic membrane apparatus as claimed in claim 1, wherein: and intermediate sealing elements are arranged among the plurality of rotary disk ceramic membranes on the same rotary hollow shaft, the upper end of the rotary hollow shaft is provided with an end sealing element, and the intermediate sealing elements and the end sealing element enable the plurality of rotary disk ceramic membranes to be arranged on the rotary hollow shaft in a parallel sealing manner.
3. A dynamic vertical biaxial rotation disc ceramic membrane apparatus as claimed in claim 2, wherein: the spacing between the ceramic membranes of the staggered adjacent rotating discs is more than or equal to 1.0mm and less than 4.0 mm.
4. A dynamic vertical biaxial rotation disc ceramic membrane apparatus as claimed in claim 2, wherein: the horizontal distance between the rotary disc ceramic membrane on one rotary hollow shaft and the middle sealing piece and the end sealing piece on the other rotary hollow shaft is more than or equal to 2.0mm and less than 5.0 mm.
5. A dynamic vertical biaxial rotary disk ceramic membrane apparatus as claimed in claim 1, wherein: the lower end of the membrane unit cavity is sealed and provided with a lower cover, and the lower part of each rotary hollow shaft penetrates through the lower cover through a mechanical sealing element and a bearing.
6. The dynamic vertical biaxial rotary disk ceramic membrane apparatus as claimed in claim 5, wherein: the feed inlet is arranged on the lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123295510.0U CN217139960U (en) | 2021-12-24 | 2021-12-24 | Dynamic vertical double-shaft rotating disc ceramic membrane device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123295510.0U CN217139960U (en) | 2021-12-24 | 2021-12-24 | Dynamic vertical double-shaft rotating disc ceramic membrane device |
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| Publication Number | Publication Date |
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| CN217139960U true CN217139960U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123295510.0U Active CN217139960U (en) | 2021-12-24 | 2021-12-24 | Dynamic vertical double-shaft rotating disc ceramic membrane device |
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| CN (1) | CN217139960U (en) |
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- 2021-12-24 CN CN202123295510.0U patent/CN217139960U/en active Active
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