CN106693488B - Unloading device of precision filter - Google Patents
Unloading device of precision filter Download PDFInfo
- Publication number
- CN106693488B CN106693488B CN201611259630.6A CN201611259630A CN106693488B CN 106693488 B CN106693488 B CN 106693488B CN 201611259630 A CN201611259630 A CN 201611259630A CN 106693488 B CN106693488 B CN 106693488B
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- Prior art keywords
- door
- door body
- buoyancy tank
- water inlet
- pull rod
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 11
- 229920002379 silicone rubber Polymers 0.000 claims description 8
- 230000007306 turnover Effects 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims 2
- 230000005484 gravity Effects 0.000 abstract description 8
- 230000000630 rising effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 210000000476 body water Anatomy 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/92—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate
Abstract
The invention discloses an unloading device of a precision filter, which comprises a water inlet and outlet cavity partition board arranged in the filter, wherein a door frame is fixedly arranged on the water inlet and outlet cavity partition board in a sealing way, a door body which is arranged in the door frame and can be overturned is arranged on the door body, a door shaft is fixedly arranged on the door body, and two ends of the door shaft are arranged on the water inlet and outlet cavity partition board through bearings; a buoyancy tank is further arranged in the water inlet cavity of the filter, a connecting assembly is arranged between the buoyancy tank and the door shaft, and the buoyancy tank floats up and down to drive the door shaft to rotate through the connecting assembly, so that the door body is opened and closed. The invention only installs unloading door at the water inlet and outlet cavity baffle, does not need other bypass valve and electric component, realizes automatic unloading by only water level force of the overload rising of the filter cylinder, and automatically resets and closes the buoyancy tank gravity when the water level falls to normal. The device has good operation effect, high reliability and low cost, and solves the problems that the existing precise filter has large occupied area and high equipment cost, and an unloading electric valve can not be opened when power is cut off.
Description
Technical Field
The invention relates to the field of sewage treatment equipment, in particular to an automatic unloading device in a precision filter.
Background
In the fields of domestic sewage treatment, industrial wastewater treatment and the like, in order to enable the effluent to reach the first-level A standard, the most economical and effective method is to filter the effluent of a secondary sedimentation tank or a high-efficiency sedimentation tank by adopting a precise filter. However, because the filter screen wires of the precision filter are fine, when the water inlet water quality is poor and other unexpected reasons cause the water level of the water inlet side of the filter screen to rise, the water inlet and outlet water level difference of the filter screen is increased, so that the filter screen is subjected to the action of excessive water pressure, and the filter screen breakage accident tends to occur. In order to prevent accident sending, when the water inlet end of the precision filter reaches a set high water level, the water at the water inlet end is quickly discharged to enable the water level to drop to a safer state.
Currently, the known unloading device mainly controls the switch of a large-caliber electric butterfly valve through a liquid level meter and is provided with an independent unloading bypass. When the water level of the water inlet side of the filter cylinder of the precision filter is higher than the set high water level, the ultrasonic liquid level meter feeds back a signal to the field control box, sends out an overload alarm signal, and simultaneously controls the electric butterfly valve to be opened to drain water. When the water level is restored to the set safety value, the liquid level meter feeds back a signal to the field control box to control the electric butterfly valve to be closed. The existing unloading device has the following defects:
1) The device has the advantages of multiple components and higher cost, and not only has various electric control elements and large-caliber electric butterfly valves, but also has independent pipelines, liquid level meters and the like.
2) The reliability is poor, the device completely depends on an electric component, and when the power failure or the conditions of a liquid level meter, an electric valve fault, the failure of the electric component, poor line contact and the like occur, the unloading device cannot unload, so that the accident of damage caused by overload of the filter screen can be caused.
3) The floor area is large, and the unloading bypass increases the external dimension of the equipment, so that the precise filter needs more installation area.
Disclosure of Invention
The invention aims to provide an unloading device of a precision filter, which solves the problems of large volume, high cost and poor reliability of the existing unloading device of the precision filter.
The technical scheme adopted for solving the technical problems is as follows: the unloading device of the precise filter comprises a water inlet and outlet cavity partition board arranged in the filter, wherein a door frame is fixedly arranged on the water inlet and outlet cavity partition board in a sealing manner, a door body which is arranged in the door frame and can be overturned is arranged on the door body, a door shaft is fixedly arranged on the door body, and two ends of the door shaft are arranged on the water inlet and outlet cavity partition board through bearings; a buoyancy tank is further arranged in the water inlet cavity of the filter, a connecting assembly is arranged between the buoyancy tank and the door shaft, and the buoyancy tank floats up and down to drive the door shaft to rotate through the connecting assembly, so that the door body is opened and closed.
Further, the connecting component comprises a pull rod hinged with the buoyancy tank, a deflector rod fixedly connected with the door shaft, and a fixed sleeve arranged between the pull rod and the deflector rod, wherein the fixed sleeve is fixedly connected with one of the pull rod and the deflector rod and hinged with the other one of the pull rod and the deflector rod.
In order to ensure that the pull rod has a section of idle stroke, the pull rod comprises an upper pull rod hinged and fixed at the bottom of the buoyancy tank, a sleeve fixedly connected with the upper pull rod, a sliding block arranged in the sleeve, a lower pull rod fixedly connected with the sliding block, and a fixed sleeve connected with the lower pull rod; the sleeve top is sealed, and the bottom is provided with the baffle, is provided with the centre bore that supplies the pull rod to pass on the baffle.
In order to strengthen the overturning strength of the door body, a counterweight structure is arranged on the door shaft along the vertical direction of the door shaft, and comprises a counterweight tube fixed on the door shaft and a group of counterweight balls arranged in the counterweight tube, wherein the counterweight balls can roll back and forth in the counterweight tube.
In order to ensure that certain pre-pressure exists when the door body is closed and the tightness is improved, the counterweight structure is obliquely arranged relative to the door body, and one end of the counterweight structure, which is close to the water inlet chamber, is low, and one end of the counterweight structure, which is close to the water outlet chamber, is high; the central line of the door shaft is lower than the central line of the door body, and the door shaft is fixedly arranged at the water inlet chamber side of the door body.
And a circle of sealing silicon rubber is further arranged between the door body and the door frame, the part, above the central line of the door shaft, of the sealing silicon rubber is fixedly arranged on the door frame, and the part, below the central line of the door shaft, of the sealing silicon rubber is fixedly arranged on the door body.
Preferably, a limiting rod for limiting the downward stroke of the buoyancy tank and preventing the buoyancy tank from shaking left and right is fixedly arranged in the water inlet chamber.
Preferably, a proximity switch is arranged above the buoyancy tank, and a water level signal rod matched with the proximity switch is arranged on the buoyancy tank.
When the water level in the water inlet chamber of the precision filter rises to the upper limit, an overload alarm indication is sent by a proximity switch action signal through an electric cabinet, and meanwhile, after an upper pull rod pulled by a buoyancy tank freely ascends for a certain distance, the upper pull rod and a lower pull rod ascend together to drive one end of a deflector rod to ascend, the deflector rod drives a door body and a counterweight tube to synchronously rotate anticlockwise by a small angle through a door shaft at the other end, a counterweight ball in the counterweight tube rolls from one end of the water inlet chamber to one end of the water outlet chamber, the door body is quickly fully opened by torque generated by the counterweight ball, and water flows out of an unloading door directly to the water outlet side to realize unloading.
When the water level in the water inlet cavity is lowered after unloading, the buoyancy tank loses buoyancy and descends under the action of self weight, the buoyancy tank presses the upper pull rod and the sleeve to descend, the upper pull rod and the sleeve descend for a small section of idle stroke and then press the sliding block, the sliding block drives the lower pull rod to move downwards together, the lower pull rod presses down the pulling rod end, the door body and the weight tube are pried to synchronously rotate clockwise through the other end of the pulling rod, the door body is closed, the weight tube inclines towards the water inlet cavity, the weight ball rolls towards the water inlet cavity, and the force moment of the weight ball assists in enabling the door body to be closed rapidly and sealed reliably. And meanwhile, the proximity switch acts, and the alarm is released. And the precise filter resumes normal operation.
The invention has the beneficial effects that: according to the invention, the door body is arranged on the water inlet and outlet cavity partition plate, and the door body is opened and closed through the buoyancy tank, so that the unloading of the water inlet cavity is realized. The device completely depends on the buoyancy of water to realize door opening unloading and depends on the gravity of the buoyancy tank to realize door closing reset, and the buoyancy and the gravity are very reliable basic forces, so that the reliability is ensured by a simple mechanical structure. The turnover unloading door can provide a large enough unloading channel, can enable the water level to drop instantly without electric power, can protect the filter cartridge from overload even in power failure, and has stable operation and high reliability. The hydraulic unloading device is arranged in the equipment, the volume of the precise filter is not required to be increased, the appearance of the precise filter is not influenced, an electric butterfly valve and control components are not required, and a process unloading bypass and a pipeline accessory are not required to be configured, so that the manufacturing cost and the running cost are greatly reduced. Can operate without faults for a long time.
The invention will be described in more detail below with reference to the drawings and examples.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a schematic view of the door body in a closed state.
Fig. 3 is a schematic view of the door body in an opened state.
Description of the embodiments
An embodiment, as shown in fig. 1 to 3, is an unloading device of a precision filter, comprising a water inlet cavity baffle plate 1 arranged in the filter, a water inlet cavity 101 and a water outlet cavity 102 respectively arranged at two sides of the water inlet cavity baffle plate 1. The door is characterized in that a door frame 2 is fixedly arranged on the water inlet and outlet cavity partition board 1 in a sealing manner, a door body 3 capable of being overturned is arranged in the door frame 2, a door shaft 4 is fixedly arranged on the door body 3, two ends of the door shaft 4 are arranged on the water inlet and outlet cavity partition board 1 through bearings, and the bearings adopt self-lubricating ceramic rolling bearings. The door shaft 4 drives the door body 3 to rotate, so that the door body 3 is opened and closed.
The water inlet chamber 101 of the filter is internally provided with a buoyancy tank 5, a connecting component is arranged between the buoyancy tank 5 and the door shaft 4, and 1 connecting component is respectively arranged at the left side and the right side of the door frame 2. The buoyancy tank 5 floats up and down, and drives the door shaft 4 to rotate through the connecting component, so that the door body 3 is opened and closed. The connecting component comprises a pull rod 6 hinged with the buoyancy tank 5, a deflector rod 8 fixedly connected with the door shaft 4, and a fixed sleeve 7 arranged between the pull rod 6 and the deflector rod 8, wherein the fixed sleeve 7 is fixedly connected with one of the pull rod 6 and the deflector rod 8 and hinged with the other one. In this embodiment, the fixing sleeve 7 is preferably fixedly connected with the deflector rod 8 and hinged with the pull rod 6. The pull rod 6 comprises an upper pull rod 601 which is hinged and fixed at the bottom of the buoyancy tank 5, a sleeve 602 which is fixedly connected with the upper pull rod 601, a sliding block 603 which is arranged in the sleeve 602, a lower pull rod 604 which is fixedly connected with the sliding block 603, and a lower pull rod 604 which is connected with the fixed sleeve 7; the sleeve 602 is sealed at the top and a baffle 605 is arranged at the bottom, and a central hole for the pull-down rod 604 to pass through is arranged on the baffle 605. The sliding block 603 is matched with the sleeve 602 to ensure that the unloading door starts to act when the buoyancy tank rises or falls for a certain idle stroke along with the water level and reaches a certain set water level; and a water through hole is arranged in the sleeve, so that the sleeve can flexibly stretch out and draw back under water, and negative pressure interference is not generated.
The door shaft 4 is provided with a weight structure 9 along the vertical direction of the door shaft, the weight structure 9 comprises a weight tube 901 fixed on the door shaft 4 and a group of weight balls 902 arranged in the weight tube 901, and the inner end surface of the weight tube 901 is lined with annular sponge rubber. The middle part of the counterweight pipe 901 is fixed with a connecting sleeve sleeved on the door shaft 4. The counterweight structure 9 is obliquely arranged opposite to the door body 3, one end close to the water inlet chamber 101 is low, one end close to the water outlet chamber 102 is high, and an included angle between the counterweight structure 9 and the vertical plane of the door body 3 is 2-5 degrees. When the door body is closed, the weight ball in the weight tube is piled up at one side of the water inlet cavity, and the moment generated by the weight ball enables the door body to be closed and sealed reliably. The center line of the door shaft 4 is lower than the center line of the door body 3, and the door shaft 4 is fixedly arranged on the water inlet chamber side of the door body 3, so that the center of gravity of the door body 3 is positioned below the center line of the door body 3 and is close to one side of the water inlet chamber 101.
A circle of sealing silicon rubber 10 is further arranged between the door body 3 and the door frame 2, the sealing silicon rubber 10 is fixedly arranged on the door frame 2 at the part above the central line of the door shaft, and the part below the central line of the door shaft is fixedly arranged on the door body 3. The door body, the sealing silicon rubber and the door frame form a pre-tightening and water pressure self-tightening sealing structure.
And a limiting rod 11 for limiting the downward stroke of the buoyancy tank 5 and preventing the buoyancy tank 5 from shaking left and right is fixedly arranged in the water inlet chamber. A proximity switch 12 is arranged above the buoyancy tank 5, and a water level signal rod 501 matched with the proximity switch 12 is arranged on the buoyancy tank 5.
In this example, under the anhydrous state in the equipment, the door body is in the closed condition, and the buoyancy tank gravity is exerted and is transmitted the driving lever on the door axle for rotatory door body pretension closing force, and proximity switch sends out at this moment and instructs normal condition, and the counter weight structure is inclined towards the cavity direction of intaking, and counter weight ball moment also provides door body pretension closing force.
Because the door body is clockwise the door, when the precision filter begins to advance water for the first time, namely door lower part water pressure provides the moment of closing the door, advance water cavity water depth when the precision filter normally works and be higher than the door body, advance water and get into the section of thick bamboo from the water cavity top that advances, go out water cavity water level and be not lower than the door, all submergence and water are in the door around promptly, but advance water cavity water level is higher than out water cavity water level, the upper door body water pressure of decurrent door axle center top is slightly greater than door body water pressure below the door axle center, the moment that this pressure differential produced is less than the aforesaid pretension moment of closing the door body, the door body is in the totally closed state also to be favorable to the door by the rolling friction moment that the door axle receives water pressure to produce. The rubber seal of the door body is good under the action of hydraulic self-tightening. However, because the upper area of the door is slightly larger than the lower area, the buoyancy tank is in a floating state in the continuous water level rising process, the door closing pretightening force of the door is gradually reduced, but the rolling friction moment generated by the water pressure of the door shaft is correspondingly increased, and the door is kept closed by adding the counterweight ball moment. In combination, before approaching the set unloading water level, the door closing moment of the door body is slightly larger than the door opening moment.
The normal water level is not higher than 300mm below the filter cylinder, and the overload water level is 500-550 mm above the lower side of the filter cylinder. When the water level before the filter cartridge is 300mm higher than the normal working water level, the buoyancy tank floats along with the water level along with the continuous rising of the water level, and before the unloading water level is reached, the upper pull rod moves upwards relative to the lower pull rod to be in an idle stroke state, the lower pull rod is not moved, and the door body is in a closed state.
When the water level approaches the set unloading water level, and the buoyancy tank has pulled the pull rod through the idle stroke and provided a certain amount of door opening moment, the door opening moment provided by each component is balanced with the door closing moment. When the water level rises again, the water pressure and the door opening moment of the buoyancy tank and the like are larger than the door closing moment, and the door is opened. At this time, the proximity switch sends out an overload alarm signal.
When the buoyancy tank pulling force makes the unloading door rotate anticlockwise by a small angle and then is opened by a slit, the weight tube synchronously rotates by a small angle, the water outlet cavity end of the weight tube is lower than the water inlet cavity end, the weight ball in the weight tube rolls from the water inlet cavity end to the water outlet cavity end, and the closing moment provided by the weight ball is converted into the opening moment by disappearance and equivalent. Because the force balance is quickly broken, the door body is completely opened, the water pressure has no moment on the door as the door body rotates to be close to the horizontal, and at the moment, only the counterweight device has door opening moment on the door body, almost no door moment exists, and the door keeps a fully opened rotating state. The water source of the water inlet chamber continuously flows out to the water outlet chamber through the upper and lower channels of the door body, and the filter cylinder of the precision filter is completely unloaded.
When the water level is slightly higher than the set normal safe water level by 300mm, the buoyancy tank completely leaks out of the water surface, the upper pull rod is pressed down after the upper pull rod is lowered by the dead weight of the buoyancy tank and the pull rod is pressed down after the upper pull rod is in idle stroke, the gravity of the buoyancy tank and the pull rod acts on the deflector rod of the door shaft to provide enough door closing moment, and the moment is far greater than the door opening moment maintained by the counterweight ball and the moment resisted by the small rolling friction force of the rotating door shaft, so that the door is clockwise rotated and closed. When the door is close to closing, the water inlet chamber end of the counter weight pipe which rotates synchronously is lower than the water outlet chamber end, the counter weight ball rolls from the water outlet chamber end to the water inlet chamber end, and the auxiliary door body is closed rapidly. At the moment, the counterweight tube is restored to the original position to provide durable door closing moment for the door body, and the proximity switch sends an indication to restore to a normal state, so that the whole equipment is returned to the original state, and one cycle is completed.
The embodiment of the invention has the following advantages compared with the prior art:
1) The device completely depends on hydraulic power to realize door opening unloading and gravity to realize door closing reset, so that excessive electric appliances, valves and control components are avoided. Thereby greatly reducing the manufacturing cost and the running cost.
2) Because the buoyancy and the gravity are very reliable basic forces, the unloading is timely and the action is durable and reliable.
3) The turnover unloading door can provide a large enough unloading channel, and the water level can be instantaneously lowered.
4) The fully built-in structure does not occupy extra sites, and the whole occupied area of the equipment is greatly reduced.
5) The power is not needed, the energy is saved, and the overload protection function can be realized under the condition of power failure. Ensuring the long-term overload-free operation of the precise filter.
Claims (4)
1. The utility model provides a precision filter unloading device, includes business turn over water cavity baffle (1) that set up in the filter, its characterized in that: the door is characterized in that a door frame (2) is fixedly arranged on the water inlet and outlet cavity partition board (1) in a sealing manner, a door body (3) which is arranged in the door frame (2) and can be turned over is arranged on the door body (3), a door shaft (4) is fixedly arranged on the door body (3), and two ends of the door shaft (4) are arranged on the water inlet and outlet cavity partition board (1) through bearings;
a buoyancy tank (5) is also arranged in the water inlet cavity of the filter, a connecting component is arranged between the buoyancy tank (5) and the door shaft (4), and the buoyancy tank (5) floats up and down to drive the door shaft (4) to rotate through the connecting component, so that the door body (3) is opened and closed;
a counterweight structure (9) is arranged on the door shaft (4) along the vertical direction of the door shaft, the counterweight structure (9) comprises a counterweight pipe (901) fixed on the door shaft (4) and a group of counterweight balls (902) arranged in the counterweight pipe (901), and the counterweight balls (902) can roll back and forth in the counterweight pipe (901);
the counterweight structure (9) is obliquely arranged relative to the door body, and when the door body (3) is closed, one end, close to the water inlet chamber, is low, and the other end, close to the water outlet chamber, is high; the central line of the door shaft (4) is lower than the central line of the door body (3), and the door shaft (4) is fixedly arranged at the water inlet chamber side of the door body (3);
the connecting component comprises a pull rod (6) hinged with the buoyancy tank (5) and a deflector rod (8) fixedly connected with the door shaft (4), and a fixed sleeve (7) arranged between the pull rod (6) and the deflector rod (8), wherein the fixed sleeve (7) is fixedly connected with one of the pull rod (6) and the deflector rod (8) and hinged with the other one;
the pull rod (6) comprises an upper pull rod (601) hinged and fixed at the bottom of the buoyancy tank (5), a sleeve (602) fixedly connected with the upper pull rod (601), a sliding block (603) arranged in the sleeve (602), a lower pull rod (604) fixedly connected with the sliding block (603), and the lower pull rod (604) is connected with the fixed sleeve (7); the top of the sleeve (602) is sealed, a baffle (605) is arranged at the bottom of the sleeve, and a central hole for the lower pull rod (604) to pass through is arranged on the baffle (605).
2. The precision filter unloading device of claim 1, wherein: a circle of sealing silicone rubber (10) is further arranged between the door body (3) and the door frame (2), the part above the central line of the door shaft of the sealing silicone rubber (10) is fixedly arranged on the door frame (2), and the part below the central line of the door shaft is fixedly arranged on the door body (3).
3. The precision filter unloading device of claim 1, wherein: and a limiting rod (11) for limiting the downward stroke of the buoyancy tank (5) and preventing the buoyancy tank (5) from shaking left and right is fixedly arranged in the water inlet chamber.
4. The precision filter unloading device of claim 1, wherein: the water level control device is characterized in that a proximity switch (12) is arranged above the buoyancy tank (5), and a water level signal rod (501) matched with the proximity switch (12) is arranged on the buoyancy tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611259630.6A CN106693488B (en) | 2016-12-30 | 2016-12-30 | Unloading device of precision filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611259630.6A CN106693488B (en) | 2016-12-30 | 2016-12-30 | Unloading device of precision filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106693488A CN106693488A (en) | 2017-05-24 |
| CN106693488B true CN106693488B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611259630.6A Active CN106693488B (en) | 2016-12-30 | 2016-12-30 | Unloading device of precision filter |
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| Country | Link |
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| CN (1) | CN106693488B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109865333B (en) * | 2017-12-01 | 2021-07-30 | 山东科泰环境监测有限公司 | Phosphoric acid slurry treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863253B (en) * | 2015-05-13 | 2016-07-20 | 武汉圣禹排水系统有限公司 | The axis Hydro-automatic gate that sensing water level automatically turns on |
| CN205399574U (en) * | 2016-02-24 | 2016-07-27 | 王欣怡 | For kitchen use contaminated water filtration apparatus |
| CN206587468U (en) * | 2016-12-30 | 2017-10-27 | 广东新环环保产业集团有限公司 | A kind of microfroc filter relief arrangement |
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| CN106693488A (en) | 2017-05-24 |
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