CN117303544A - 2-chloronicotinic acid waste water treatment device - Google Patents
2-chloronicotinic acid waste water treatment device Download PDFInfo
- Publication number
- CN117303544A CN117303544A CN202311363023.4A CN202311363023A CN117303544A CN 117303544 A CN117303544 A CN 117303544A CN 202311363023 A CN202311363023 A CN 202311363023A CN 117303544 A CN117303544 A CN 117303544A
- Authority
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- China
- Prior art keywords
- box body
- rod
- fixing frame
- driving
- filter membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- IBRSSZOHCGUTHI-UHFFFAOYSA-N 2-chloropyridine-3-carboxylic acid Chemical compound OC(=O)C1=CC=CN=C1Cl IBRSSZOHCGUTHI-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 26
- 239000002351 wastewater Substances 0.000 claims abstract description 80
- 239000012528 membrane Substances 0.000 claims abstract description 72
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 239000002245 particle Substances 0.000 claims abstract description 45
- 239000007787 solid Substances 0.000 claims abstract description 37
- 238000001179 sorption measurement Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 239000002985 plastic film Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 15
- 238000004075 wastewater filtration Methods 0.000 description 8
- 230000005484 gravity Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application discloses a 2-chloronicotinic acid production wastewater treatment device, which comprises a rack, wherein a wastewater filtering mechanism and a wastewater neutralization mechanism are sequentially arranged on the rack; the waste water filtering mechanism comprises a box body, a water inlet pipe arranged at the top of the box body, a filter membrane for filtering solid particles, a cleaning component for cleaning the filter membrane, and a detection component for detecting whether the filter membrane is blocked by the solid particles, wherein a liquid level control mechanism is further arranged in the box body; the box body is provided with a water outlet and is connected with the wastewater neutralization mechanism; the cleaning component comprises a fixing frame for fixing the filter membrane, a fixing piece for fixing the fixing frame at the top of the box body, a reciprocating part for realizing reciprocating motion of the fixing frame, an elastic part for realizing elastic connection of the fixing frame and the box body, and an adsorption part for adsorbing solid particles. This application has the effect of the solid particle on the clearance filter membrane of being convenient for.
Description
Technical Field
The application relates to the technical field of 2-chloronicotinic acid production equipment, in particular to a 2-chloronicotinic acid production wastewater treatment device.
Background
At present, 2-chloronicotinic acid is widely applied, 2-chloronicotinic acid is used in the preparation of medicines and pesticides, a large amount of wastewater is generated when 2-chloronicotinic acid is produced, and 2-chloronicotinic acid is mixed into the wastewater, so that a wastewater treatment device is required to separate 2-chloronicotinic acid from wastewater, and in the process of separating 2-chloronicotinic acid from wastewater, solid particles of 2-chloronicotinic acid easily block a filter screen, thereby influencing the solid-liquid separation efficiency; in addition, these wastewater contains high acid concentration and phosphorus, and the untreated wastewater has an environmental impact.
The utility model provides a chinese patent of application number CN202121409543.0 in the related art, a 2-chloronicotinic acid waste water treatment facilities is proposed, which comprises a supporting rack, waste water neutralization mechanism, the exhaust pipe, the protective cover, waste water filtration subassembly and self-vibration drive subassembly, waste water neutralization mechanism lower extreme is equipped with the exhaust pipe, it is equipped with the fixed station to erect bracing piece inboard upper portion, be equipped with the fixed slot in the fixed station, all be equipped with buffer spring on fixed slot roof and the diapire, waste water filtration subassembly both ends are located buffer spring and are located the fixed slot, be equipped with fixed subassembly on the protective cover, the protective cover passes through fixed subassembly and waste water filtration subassembly links to each other, self-vibration drive subassembly locates to erect bracing piece inboard, self-vibration drive subassembly is located waste water filtration subassembly below. The technical scheme is convenient for replacing the wastewater filtering membrane, and can generate self-vibration in the wastewater treatment and filtering process so as to effectively avoid the blockage of the filter screen by the 2-chloronicotinic acid solid particles.
With respect to the related art in the above, the inventors consider that there are the following drawbacks: utilize from vibration drive assembly to beat the wastewater filtration case, but at first the filter membrane is inside the waste water, and though the wastewater filtration case can take place the vibration but the vibration amplitude of filter membrane is limited to be insufficient for guaranteeing that the solid particle drops on the filter membrane, and beat the wastewater filtration case, also influence the life of wastewater filtration case.
Disclosure of Invention
In order to solve the problem that solid particles on a filter membrane are inconvenient to clean, the application provides a 2-chloronicotinic acid production wastewater treatment device.
The application provides a 2-chloronicotinic acid waste water treatment device adopts following technical scheme:
the 2-chloronicotinic acid production wastewater treatment device comprises a rack, wherein a wastewater filtering mechanism and a wastewater neutralizing mechanism are sequentially arranged on the rack;
the waste water filtering mechanism comprises a box body, a water inlet pipe arranged at the top of the box body, a filter membrane for filtering solid particles, a cleaning component for cleaning the filter membrane, and a detection component for detecting whether the filter membrane is blocked by the solid particles, wherein a liquid level control mechanism is further arranged in the box body; the box body is provided with a water outlet and is connected with the wastewater neutralization mechanism;
the cleaning component comprises a fixing frame for fixing the filter membrane, a fixing piece for fixing the fixing frame at the top of the box body, a reciprocating part for realizing reciprocating motion of the fixing frame, an elastic part for realizing elastic connection of the fixing frame and the box body, and an adsorption part for adsorbing solid particles.
Optionally, the reciprocating part comprises a balancing weight, a pull rope and a positioning piece for fixing the balancing weight at the designated position; one end of the pull rope is fixedly connected with the fixing frame, the other end of the pull rope penetrates out of the box body and then is fixedly connected with the balancing weight, the positioning piece is arranged on the balancing weight, the weight of the balancing weight is larger than the sum of the weights of the fixing frame and the filter membrane, and the positioning piece is fixedly adsorbed to the outer wall of the box body.
Optionally, the elastic part includes first spring, disc and slide bar, the slide bar is fixed the lateral wall of box just the mount cover is established to slide outside the slide bar, the mount with the gliding position of slide bar is the level setting, the disc is fixed on the slide bar just the disc is located the top of mount, first spring cover is established outside the slide bar just the both ends of first spring respectively with mount and disc tip fixed connection.
Optionally, the box outer wall lift is provided with and is used for promoting the elevating platform of balancing weight, the box is provided with and is used for responding to the first proximity switch of elevating platform, first proximity switch with mounting electric connection.
Optionally, the adsorption part comprises a supporting rod, a lifting rod, an electromagnet and an adsorption column filled with activated carbon; the supporting rod is rotatably arranged at the top of the box body, the lifting rod slides in the supporting rod, the electromagnet is used for connecting the fixing frame with the lifting rod, a clamping assembly is arranged between the lifting rod and the supporting rod, and the adsorption column is fixedly connected with the outer wall of the lifting rod.
Optionally, the adsorption part comprises a supporting rod, a lifting rod, an electromagnet and an adsorption column filled with activated carbon; the supporting rod is rotatably arranged at the top of the box body, the lifting rod slides in the supporting rod, the electromagnet is used for connecting the fixing frame with the lifting rod, a clamping assembly is arranged between the lifting rod and the supporting rod, and the adsorption column is fixedly connected with the outer wall of the lifting rod.
Optionally, the rotating assembly includes rotation motor and dwang, the dwang with the top of box rotates to be connected, the bottom of dwang with bracing piece top fixed connection, rotation motor is used for the drive the dwang rotates and with install in box top outer wall.
Optionally, the liquid level control mechanism comprises two flowmeters and a monitoring assembly for monitoring the liquid level position, wherein the two flowmeters are respectively arranged on the water inlet pipe and the water outlet.
Optionally, the monitoring component includes plastic sheet, two magnet pieces, is used for driving and is located the box is outside magnet piece reciprocating motion's drive division and level sensor, the plastic sheet sets up the outer wall of box, two magnet pieces are located respectively the inside and outside both sides of plastic sheet, two magnet pieces adsorb each other, level sensor installs in being located on the magnet piece of box inner wall, level sensor electric connection has bee calling organ.
Optionally, the drive portion includes driving disk, transfer line, slider, actuating lever and driving motor, the driving disk with the box outer wall rotates to be connected, the actuating lever vertically install in the box outer wall, the slider cover is established to slide outside the actuating lever, driving motor is used for the drive the driving disk rotates, the slider with be located the magnet piece fixed connection of box outer wall.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the positioning piece is powered off and demagnetized, the positioning piece is separated from the box body, the fixing frame is pulled out of the waste water rapidly under the action of gravity of the counterweight, at the moment of pulling out the liquid level of the waste water, the waste water and solid particles on the filter membrane are impacted, fixed particles on the filter membrane are loosened, subsequent cleaning is facilitated, the fixing piece and the fixing frame are adsorbed and fixed, the fixing frame is stabilized at the top of the box body and is positioned on the liquid level, and the first spring is compressed and deformed; when the filter membrane and the fixing frame are required to impact downwards and enter the wastewater, the balancing weight is lifted to an initial position by the lifting disc, the first proximity switch senses the lifting disc, and then the fixing piece is controlled to be powered off and demagnetized;
2. when the fixing frame moves downwards, the fixing piece is powered off, adsorption between the fixing piece and the top of the box body is released, the electromagnet is powered on and then connects the fixing frame with the lifting rod, the lifting rod slides in the supporting rod and the adsorption column moves into waste water along with the downward movement process of the fixing frame, the clamping block is positioned in the sliding groove in the movement process of the lifting rod, the second spring is extruded and deformed, when the clamping block moves to the opening of the clamping hole, the clamping block is driven to move into the clamping hole, the driving block is pushed out from the clamping hole, after the driving block moves to the second proximity switch position, the second proximity switch triggers the rotary motor to start working, and the adsorption column adsorbs fixed particles in waste water above the filter membrane in the rotation process, so that the adsorption effect of activated carbon in the adsorption column on the cleaned fixed particles is realized;
3. when the driving motor controls the driving disc to rotate for one circle, the frequency of the rotation of the driving motor can be set in the embodiment, so that the time required by the rotation of the driving motor for one circle is ensured, whether the liquid level changes or not is observed, whether the liquid level in the box body changes or not is converted into the state that the liquid level sensor moves to a corresponding position in the set time, and whether the liquid level in the box body rises to the position where the liquid level sensor moves or not at the moment; if not, the filter membrane cleaning work is proved to be finished, and the wastewater treatment process is normally carried out; if the liquid level in the box body rises to the position of the liquid level sensor and even exceeds the position of the liquid level sensor, the filter membrane is proved to be in a blocking state at the moment, the buzzer is triggered to make a sound, and solid particles on the filter membrane need to be cleaned again.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
fig. 3 is an enlarged schematic view of a portion B in fig. 1.
Reference numerals: 1. a frame; 2. a waste water neutralization mechanism; 3. a case; 4. a water inlet pipe; 5. a filter membrane; 6. a fixing frame; 7. a fixing member; 8. balancing weight; 9. a pull rope; 10. a positioning piece; 11. a first spring; 12. a disc; 13. a slide bar; 14. a lifting disc; 15. a first proximity switch; 16. a support rod; 17. a lifting rod; 18. an electromagnet; 19. an adsorption column; 20. a clamping block; 21. a second spring; 22. a driving block; 23. a second proximity switch; 24. a rotating motor; 25. a rotating lever; 26. a chute; 27. a clamping hole; 28. a flow meter; 29. a plastic sheet; 30. a magnet block; 31. a buzzer; 32. a liquid level sensor; 33. a drive plate; 34. a transmission rod; 35. a slide block; 36. a driving rod; 37 drive the motor.
Description of the embodiments
The present application is described in further detail below in conjunction with figures 1-3.
The embodiment of the application discloses a 2-chloronicotinic acid waste water treatment device. Referring to fig. 1, a 2-chloronicotinic acid waste water treatment device includes frame 1, set gradually waste water filtering mechanism and waste water neutralization mechanism 2 on frame 1, waste water filtering mechanism is used for filtering 2-chloronicotinic acid solid particle, and waste water neutralization mechanism 2 is used for handling waste water pH valve and organic matter, waste water filtering mechanism includes box 3, set up in inlet tube 4 at box 3 top, be used for filtering the filter membrane 5 of solid particle, be used for clearing up filter membrane 5's clearance subassembly, be used for detecting the solid casing whether or not block up filter membrane 5's detection component, the clearance subassembly is used for clearing up filter membrane 5, wait to clear up after the work is accomplished, need utilize detection component to detect the liquid level of waste water, if filter membrane 5 still is blocked up that the liquid level can rise gradually, need continue to clear up filter membrane 5.
Referring to fig. 1, the tank 3 is further provided with a water outlet and connected with the wastewater neutralization mechanism 2, and wastewater flows from the water outlet to the wastewater neutralization mechanism 2 after the filtration of the 2-chloronicotinic acid solid particles is completed; the cleaning component comprises a fixing frame 6 for fixing the filter membrane 5, a fixing piece 7 for fixing the fixing frame 6 at the top of the box body 3, a reciprocating part for realizing reciprocating motion of the fixing frame 6, an elastic part for realizing elastic connection of the fixing frame 6 and the box body 3 and an adsorption part for adsorbing solid particles; when the reciprocating part is utilized to rapidly pull the fixing frame 6 from the wastewater, the fixing frame also impacts the wastewater under the action of the elastic part, in the impact process, solid particles on the filter membrane 5 and the wastewater are subjected to violent expansion, the wastewater also floods waves, the solid particles on the filter membrane 5 are further impacted, and the effect of cleaning the solid particles on the filter membrane 5 is realized.
The tank 3 is internally provided with a liquid level control mechanism for controlling the liquid level of the wastewater in the tank 3, the liquid level control mechanism comprises two flow meters 28 and a monitoring component for monitoring the liquid level position of the wastewater, the two flow meters 28 are respectively arranged on the water inlet pipe 4 and the water outlet, the flow meters 28 can be selected from the coriolis force flow meters 28 or the electromagnetic flow meters 28 in the embodiment, when the wastewater is normally filtered, the liquid level is required to be kept close to the top of the tank 3, when the filter membrane 5 is required to be cleaned, the flow rate of the water outlet is firstly controlled to be increased, after the liquid level of the wastewater in the tank 3 is reduced, the two flow meters 28 are adjusted to the same value at the moment, and because the inlet amount of the wastewater in the tank 3 is equal to the water yield of the wastewater, the liquid level of the wastewater in the tank 3 is unchanged at the moment, the wastewater in the tank 3 is dynamically balanced, and the liquid level in the tank 3 is reduced, so that the impact of the filter membrane 5 and the wastewater generation and the fluctuation of the wastewater enhancement are conveniently realized.
Referring to fig. 1, the fixing member 7 is configured as an electromagnet, and in this embodiment, is used to fix the fixing frame 6 on the top of the tank 3 after the fixing frame 6 is straightened above the wastewater level; the reciprocating part comprises a balancing weight 8, a pull rope 9 and a positioning piece 10 for fixing the balancing weight at a specified position, one end of the pull rope 9 is fixedly connected with the fixing frame 6, the other end of the pull rope 9 penetrates out of the top of the box body 3 and is fixedly connected with the balancing weight 8, in the embodiment, in order to facilitate the pull rope 9 to pull out the box body 3, the top of the box body 3 is rotationally connected with a fixed pulley, the fixed pulley is used for guiding the pull rope 9, the fixing frame 6 is conveniently pulled up by the pull rope 9, the weight of the balancing weight 8 is greater than the sum of the weights of the fixing frame 6 and the filter membrane 5, and in the embodiment, the weight of the balancing weight 8 is twice or three times as large as the sum of the weights of the fixing frame 6 and the filter membrane 5, so that the balancing weight 8 can rapidly pull up the fixing frame 6; the positioning piece 10 is also arranged as an electromagnet, and the positioning piece 10 is fixed on the side wall of the balancing weight 8, and the positioning piece 10 is adsorbed on the outer side wall of the box body 3.
The elastic part comprises a first spring 11, a disc 12 and a sliding rod 13, wherein the sliding rod 13 is fixed on the side wall of the box body 3, the fixed frame 6 is sleeved and slides outside the sliding rod 13, the filter screen and the fixed frame 6 are both obliquely arranged in the embodiment, the sliding rod 13 is positioned at one end with the high height of the fixed frame 6, the sliding positions of the fixed frame 6 and the sliding rod 13 are horizontally arranged, the disc 12 is fixed on the outer wall of the sliding rod 13 and is positioned above the fixed frame 6, the first spring 11 is sleeved outside the sliding rod 13, the two ends of the first spring 11 are fixedly connected with the upper surface of the fixed frame 6 and the end part of the disc 12 respectively, and the sliding rod 13 is used for limiting the position of the fixed frame 6; when the fixing frame 6 is positioned at the bottom end of the sliding rod 13 in an initial state, the first spring 11 is in an original state, the position of the balancing weight 8 keeps the stay rope 9 in a straightened state, when the fixing frame 6 needs to be lifted, the positioning piece 10 is powered off and demagnetized, the positioning piece 10 is separated from the box body 3, the fixing frame 6 is rapidly pulled out from the waste water under the action of gravity of the balancing weight, at the moment of pulling out the liquid level of the waste water, the waste water and solid particles on the filter membrane 5 are impacted, the fixed particles on the filter membrane 5 are loosened, the subsequent cleaning is convenient, the fixing piece 7 and the fixing frame 6 are adsorbed and fixed, the fixing frame 6 is stabilized at the top of the box body 3 and positioned on the liquid level, and the first spring 11 is compressed and deformed.
The outer wall of the box body 3 is also provided with a lifting disc 14 for lifting the balancing weight 8 in a lifting manner, an electric push rod or an air cylinder is used for driving the lifting disc 14, the box body 3 is provided with a first proximity switch 15 for sensing the lifting disc 14, the box body 3 is also provided with a proximity hole for installing the first proximity switch 15, the first proximity switch 15 is electrically connected with the fixing piece 7, and the first proximity switch 15 is in control connection with the fixing piece 7 through a PLC controller; when the filter membrane 5 and the fixing frame 6 need to impact downwards and enter the wastewater, the balancing weight 8 is lifted to an initial position by the lifting disc 14, the lifting disc 14 is sensed by the first proximity switch 15, and then the fixed piece 7 is controlled to be powered off and demagnetized, and under the action of the gravity of the fixing frame 6 and the filter membrane 5 and the elasticity of the first spring 11, the fixing frame 6 and the filter membrane 5 have impact force moving towards the wastewater; when the filter membrane 5 is impacted with the wastewater, solid particles on the filter membrane 5 are flushed away, lifting and impacting are carried out for a plurality of times according to the steps, and the probability of flushing away the solid particles on the filter membrane 5 is increased.
The adsorption part comprises a support, a lifting rod 17, an electromagnet 18 and an adsorption column 19 filled with active carbon, wherein the adsorption column 19 is a porous cylinder, the active carbon has the effect of adsorbing solid particles, when the filter membrane 5 just impacts into the wastewater, the solid particles just fall off from the filter membrane 5 into the wastewater above the filter membrane 5, and the adsorption column 19 can greatly improve the adsorption efficiency of the solid particles.
Referring to fig. 1 and 2, a supporting rod 16 is rotatably connected to the top of the box 3, a lifting rod 17 slides in the supporting rod 16, an electromagnet 18 is used for connecting a fixing frame 6 and the lifting rod 17, a limiting block can be further installed on the outer wall of the lifting rod 17, a limiting groove is formed in the inner wall of the supporting rod 16, the limiting block slides in the limiting groove, one end, close to the opening of the supporting rod 16, of the limiting groove is also provided with an opening, and under the cooperation of the limiting block and the limiting groove, the relative rotation movement between the supporting rod 16 and the lifting rod 17 is limited; be provided with joint subassembly between lifter 17 and the bracing piece 16, the one end of bracing piece 16 is the opening setting, and bracing piece 16 and lifter 17 slip adaptation, adsorption column 19 and lifter 17 outer wall fixed connection, the length direction of adsorption column 19 sets up along the radial direction of lifter 17 cross-section circle, along with the rotation of bracing piece 16 and lifter 17, and adsorption column 19 is driven and takes place to rotate, promotes the efficiency that adsorption column 19 adsorbed solid particle.
The clamping assembly comprises a second spring 21, a clamping block 20 and a second proximity switch 23 which is driven to open, the box body 3 is provided with a rotating assembly which drives the supporting rod 16 to rotate, the rotating assembly comprises a rotating motor 24 and a rotating rod 25, the rotating rod 25 is rotationally connected with the top of the box body 3, the bottom of the rotating rod 25 is fixedly connected with the top of the supporting rod 16, the top of the box body 3 is provided with a rotating hole, the rotating rod 25 is rotationally connected with the inner wall of the rotating hole through a bearing, and the rotating motor 24 is used for driving the rotating rod 25 to rotate and is arranged on the outer wall of the top of the box body 3; the lifting rod 17 is provided with a chute 26, the length direction of the chute 26 is along the radial direction of the cross-section circle of the lifting rod 17, the chute 26 is arranged towards the inner wall of the supporting rod 16, a second spring 21 is fixed between the clamping block 20 and the inner wall of the end part of the chute 26, the clamping block 20 is slidably matched in the chute 26, the outer wall of the supporting rod 16 is provided with a clamping hole 27 for the insertion of the clamping block 20, the clamping hole 27 is arranged in a penetrating way, the driving block 22 is slidably arranged in the clamping hole 27, the length dimension of the driving block 22 is larger than the depth dimension of the clamping hole 27, after the clamping block 20 is inserted in the clamping hole 27, the other end of the driving block 22 is pushed out of the clamping hole 27, a second proximity switch 23 is fixed on the outer wall of the supporting rod 16 and is close to the position of the clamping hole 27, the second proximity switch 23 is used for sensing the driving block 22 and triggering the rotation assembly to work, the second proximity switch 23 is vertically arranged with the rotation motor 24 through the PLC, and after the clamping block 20 moves into the clamping hole 27 and the second spring 21 is in an original state, the second proximity switch 23 is moved to the position of the second proximity switch 23; in this embodiment, an electric push rod or an air cylinder is further installed on the outer wall of the support rod 16, and the output end of the electric push rod or the air cylinder is used for pushing the driving rod 36 into the clamping hole 27, so that the clamping between the lifting rod 17 and the support rod 16 is released.
Referring to fig. 1 and 2, when the fixing frame 6 moves downward, the fixing piece 7 is powered off, the adsorption between the fixing piece 7 and the top of the box body 3 is released, the fixing frame 6 is connected with the lifting rod 17 after the electromagnet 18 is powered on, the lifting rod 17 slides in the supporting rod 16 and the adsorption column 19 moves into the waste water along with the downward movement process of the fixing frame 6, the clamping block 20 is positioned in the sliding groove 26 in the movement process of the lifting rod 17, the second spring 21 is extruded and deformed, when the clamping block 20 moves to the opening of the clamping hole 27, the clamping block 20 is driven to move into the clamping hole 27, the driving block 22 is pushed out from the clamping hole 27, the second proximity switch 23 triggers the rotating motor 24 to start working after the driving block 22 moves to the second proximity switch 23, the adsorption column 19 adsorbs the fixed particles in the waste water above the filter membrane 5 in the rotation process, and the effect of adsorbing the cleaned fixed particles by the activated carbon in the adsorption column 19 is realized.
When the clearance is accomplished the back and is utilized monitoring assembly to monitor the liquid level, monitoring assembly includes plastic sheet 29, two magnet pieces 30, be used for driving the drive division of the outside magnet piece 30 reciprocating motion of box 3, and level sensor 32, plastic sheet 29 sets up the outer wall at box 3, two magnet pieces 30 are located the inside and outside both sides of plastic sheet 29 respectively, two magnet pieces 30 adsorb each other, box 3 is provided with the breach, the fixed seal is carried out with plastic sheet 29 in the position of breach, plastic sheet 29 is used for realizing the adsorption effect of two magnet pieces 30, the thickness of plastic sheet 29 and the equal according to actual conditions selection of magnet pieces 30, place two magnet pieces 30 in the inside and outside both sides of plastic sheet 29 the same position, ensure that two magnet pieces 30 adsorb each other.
Referring to fig. 1 and 3, the liquid level sensor 32 is electrically connected with the buzzer 31, the liquid level sensor 32 is also connected with the buzzer 31 through the control of the PLC controller, the liquid level sensor 32 is installed on the magnet block 30 inside the box 3, and the liquid level monitoring mode is adopted in the embodiment as follows: whether the liquid level in the box body 3 changes within a set time is converted into whether the liquid level sensor 32 moves to a corresponding position within the set time, and whether the liquid level in the box body 3 rises to the position where the liquid level sensor 32 moves at the moment; if not, the filter membrane 5 cleaning work is proved to be finished, and the wastewater treatment process is normally carried out; if the liquid level in the tank 3 rises to the position of the liquid level sensor 32 and even exceeds the position of the liquid level sensor 32, the filter membrane 5 is proved to be in a blocking state at this time, the buzzer 31 is triggered to make a sound, and solid particles on the filter membrane 5 need to be cleaned again.
The driving part comprises a driving disc 33, a transmission rod 34, a sliding block 35, a driving rod 36 and a driving motor, one end of the transmission rod 34 is hinged with the sliding block 35, the other end of the transmission rod 34 is hinged with the end face of the driving disc 33, the driving motor and the transmission rod 34 are positioned on two opposite sides of the driving disc 33, the driving disc 33 is rotationally connected with the outer wall of the box body 3, the axial direction of the driving disc 33 is horizontally arranged, the driving rod 36 is vertically arranged on the outer wall of the box body 3, the sliding block 35 is sleeved and slipped outside the driving rod 36, the length dimension of the driving rod 36 is not smaller than the diameter dimension of the end face circle of the driving disc 33, the driving motor is arranged on the outer wall of the box body 3 and used for controlling the driving disc 33 to rotate, and the sliding block 35 is fixedly connected with a magnet block 30 positioned on the outer wall of the box body 3; when the driving motor controls the driving disc 33 to rotate for one circle, and in this embodiment, the rotation frequency of the driving motor can be set, so that the time required for the driving motor to rotate for one circle is ensured, whether the liquid level changes for a set time is also observed, the rotation of the sliding block 35 is limited by the driving rod 36, at this time, the sliding block 35 moves along the driving rod 36, the distance that the sliding block 35 drives the magnet block 30 to move is equal to the size of the diameter of the end face circle of the driving disc 33, and the control effect on the liquid level sensor 32 is completed.
The implementation principle of the 2-chloronicotinic acid production wastewater treatment device provided by the embodiment of the application is as follows: when the waste water is filtered normally, the liquid level needs to be kept close to the top of the box body 3, when the filter membrane 5 needs to be cleaned, the flow of the water outlet is controlled to be increased at first, after the liquid level of the waste water in the box body 3 is lowered, the two flow meters 28 are adjusted to the same value, and the liquid level of the waste water in the box body 3 is kept unchanged because the inlet amount of the waste water in the box body 3 is equal to the water yield of the waste water, the waste water in the box body 3 is dynamically balanced, the liquid level in the box body 3 is lowered, so that the impact between the filter membrane 5 and the waste water and the fluctuation of the waste water are conveniently realized.
The positioning piece 10 is powered off and demagnetized, the positioning piece 10 is separated from the box body 3, the fixing frame 6 is quickly pulled out of the waste water under the action of the gravity of the counterweight, at the moment of pulling out the liquid level of the waste water, the waste water and solid particles on the filter membrane 5 are impacted, fixed particles on the filter membrane 5 are loosened, the subsequent cleaning is convenient, the fixing piece 7 and the fixing frame 6 are adsorbed and fixed, the fixing frame 6 is stabilized at the top of the box body 3 and positioned on the liquid level, and the first spring 11 is compressed and deformed; when the filter membrane 5 and the fixing frame 6 are required to impact downwards and enter the wastewater, the balancing weight 8 is lifted to the initial position by the lifting disc 14, the lifting disc 14 is sensed by the first proximity switch 15, the fixed part 7 is controlled to be powered off and demagnetized, the fixing frame 6 and the filter membrane 5 have impact force moving inwards towards the wastewater under the action of the gravity of the fixing frame 6 and the filter membrane 5 and the elasticity of the first spring 11, and when the filter membrane 5 and the wastewater impact, solid particles on the filter membrane 5 are flushed, the solid particles on the filter membrane 5 are lifted and impacted repeatedly according to the steps, and the probability that the solid particles on the filter membrane 5 are flushed is increased.
When the fixing frame 6 moves downwards, the fixing piece 7 is powered off, the adsorption between the fixing piece 7 and the top of the box body 3 is released, the electromagnet 18 is connected with the lifting rod 17 after being electrified, the lifting rod 17 slides in the supporting rod 16 and the adsorption column 19 moves into waste water along with the downward movement process of the fixing frame 6, the clamping block 20 is positioned in the sliding groove 26 in the movement process of the lifting rod 17, the second spring 21 is extruded and deformed, when the clamping block 20 moves to the opening of the clamping hole 27, the clamping block 20 is driven to move into the clamping hole 27, the driving block 22 is pushed out from the clamping hole 27, the second proximity switch 23 triggers the rotating motor 24 to start working after the driving block 22 moves to the position of the second proximity switch 23, the electromagnet 18 is separated from the lifting rod 17, the adsorption column 19 adsorbs fixed particles in waste water above the filter membrane 5 in the rotation process, and the effect of adsorbing the cleaned fixed particles in the adsorption column 19 is realized.
When the driving motor controls the driving disc 33 to rotate for one circle, and the frequency of the rotation of the driving motor can be set in the embodiment, so that the time required by the rotation of the driving motor for one circle is ensured, whether the liquid level changes or not is observed, whether the liquid level in the box body 3 changes or not is converted into the state that the liquid level sensor 32 moves to a corresponding position in the set time, and whether the liquid level in the box body 3 rises to the position where the liquid level sensor 32 moves or not is ensured; if not, the filter membrane 5 cleaning work is proved to be finished, and the wastewater treatment process is normally carried out; if the liquid level in the tank 3 rises to the position of the liquid level sensor 32 and even exceeds the position of the liquid level sensor 32, the filter membrane 5 is proved to be in a blocking state at this time, the buzzer 31 is triggered to make a sound, and solid particles on the filter membrane 5 need to be cleaned again.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The utility model provides a 2-chloronicotinic acid waste water treatment device which characterized in that: the device comprises a frame (1), wherein a wastewater filtering mechanism and a wastewater neutralizing mechanism (2) are sequentially arranged on the frame (1);
the waste water filtering mechanism comprises a box body (3), a water inlet pipe (4) arranged at the top of the box body (3), a filter membrane (5) for filtering solid particles, a cleaning component for cleaning the filter membrane (5) and a detection component for detecting whether the filter membrane (5) is blocked by the solid particles, and a liquid level control mechanism is further arranged in the box body (3); the box body (3) is provided with a water outlet and is connected with the wastewater neutralization mechanism (2);
the cleaning assembly comprises a fixing frame (6) for fixing the filter membrane (5), a fixing piece (7) for fixing the fixing frame (6) at the top of the box body (3), a reciprocating part for realizing reciprocating motion of the fixing frame (6), an elastic part for realizing elastic connection of the fixing frame (6) and the box body (3) and an adsorption part for adsorbing solid particles.
2. The 2-chloronicotinic acid production wastewater treatment device according to claim 1, wherein: the reciprocating part comprises a balancing weight (8), a pull rope (9) and a positioning piece (10) for fixing the balancing weight (8) at a specified position; one end of the pull rope (9) is fixedly connected with the fixing frame (6), the other end of the pull rope penetrates out of the box body (3) and then is fixedly connected with the balancing weight (8), the positioning piece (10) is arranged on the balancing weight (8), the weight of the balancing weight (8) is larger than the sum of the weights of the fixing frame (6) and the filter membrane (5), and the positioning piece (10) is fixedly adsorbed on the outer wall of the box body (3).
3. The 2-chloronicotinic acid production wastewater treatment device according to claim 2, wherein: the elastic part comprises a first spring (11), a disc (12) and a sliding rod (13), wherein the sliding rod (13) is fixed on the side wall of the box body (3) and the fixing frame (6) is sleeved with the sliding rod (13), the sliding position of the fixing frame (6) and the sliding rod (13) is horizontally arranged, the disc (12) is fixed on the sliding rod (13) and is located above the fixing frame (6), the first spring (11) is sleeved with the sliding rod (13) and the two ends of the first spring (11) are fixedly connected with the fixing frame (6) and the end part of the disc (12) respectively.
4. A 2-chloronicotinic acid production wastewater treatment device according to claim 3, which is characterized in that: lifting disks (14) for lifting the balancing weights (8) are arranged on the outer wall of the box body (3) in a lifting mode, first proximity switches (15) for sensing the lifting disks (14) are arranged on the box body (3), and the first proximity switches (15) are electrically connected with the fixing pieces (7).
5. The 2-chloronicotinic acid production wastewater treatment device according to claim 2, wherein: the adsorption part comprises a support rod (16), a lifting rod (17), an electromagnet (18) and an adsorption column (19) filled with active carbon; the supporting rod (16) is rotatably arranged at the top of the box body (3), the lifting rod (17) slides in the supporting rod (16), the electromagnet (18) is used for connecting the fixing frame (6) with the lifting rod (17), a clamping assembly is arranged between the lifting rod (17) and the supporting rod (16), and the adsorption column (19) is fixedly connected with the outer wall of the lifting rod (17).
6. The 2-chloronicotinic acid production wastewater treatment device according to claim 5, wherein: the clamping piece comprises a second spring (21), a clamping block (20), a driving block (22) and a second proximity switch (23); the box body (3) is provided with a rotating assembly for driving the supporting rod (16) to rotate; lifting rod (17) are provided with spout (26), and second spring (21) are fixed joint piece (20) with between spout (26) tip inner wall, bracing piece (16) outer wall is provided with and is used for joint piece (20) grafting joint hole (27), drive piece (22) slide in joint hole (27), second proximity switch (23) are fixed bracing piece (16) outer wall is close to the position of joint hole (27), second proximity switch (23) are used for the response drive piece (22) and trigger rotate the subassembly work.
7. The 2-chloronicotinic acid production wastewater treatment device according to claim 6, wherein: the rotating assembly comprises a rotating motor (24) and a rotating rod (25), the rotating rod (25) is rotationally connected with the top of the box body (3), the bottom of the rotating rod (25) is fixedly connected with the top end of the supporting rod (16), and the rotating motor (24) is used for driving the rotating rod (25) to rotate and is arranged on the outer wall of the top of the box body (3).
8. The 2-chloronicotinic acid production wastewater treatment device according to claim 2, wherein: the liquid level control mechanism comprises two flow meters (28) and a monitoring assembly for monitoring the liquid level position, and the two flow meters (28) are respectively arranged on the water inlet pipe (4) and the water outlet.
9. The 2-chloronicotinic acid production wastewater treatment device according to claim 8, wherein: the monitoring assembly comprises a plastic sheet (29), two magnet blocks (30), a driving part and a liquid level sensor (32), wherein the driving part is used for driving the magnet blocks (30) to reciprocate outside the box body (3), the plastic sheet (29) is arranged on the outer wall of the box body (3), the two magnet blocks (30) are respectively arranged on the inner side and the outer side of the plastic sheet (29), the two magnet blocks (30) are mutually adsorbed, the liquid level sensor (32) is arranged on the magnet blocks (30) arranged on the inner wall of the box body (3), and the liquid level sensor (32) is electrically connected with a buzzer (31).
10. The 2-chloronicotinic acid production wastewater treatment device according to claim 9, wherein: the driving part comprises a driving disc (33), a transmission rod (34), a sliding block (35), a driving rod (36) and a driving motor, wherein the driving disc (33) is rotationally connected with the outer wall of the box body (3), the driving rod (36) is vertically arranged on the outer wall of the box body (3), the sliding block (35) is sleeved and slipped outside the driving rod (36), the driving motor is used for driving the driving disc (33) to rotate, and the sliding block (35) is fixedly connected with a magnet block (30) positioned on the outer wall of the box body (3).
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103140041A (en) * | 2011-11-28 | 2013-06-05 | 天津普林电路股份有限公司 | Membrane stripping section wire body with liquid-level alarm for high-density interconnection circuit board |
| US20140151294A1 (en) * | 2012-11-30 | 2014-06-05 | Tangent Company Llc | Method and Apparatus for Residential Water Recycling |
| CN206563467U (en) * | 2017-01-12 | 2017-10-17 | 云南经济管理学院 | A kind of heavy duty detergent graininess traditional Chinese medicine drying and screening installation |
| CN208545231U (en) * | 2018-07-13 | 2019-02-26 | 天津罗孚科技股份有限公司 | A kind of sanitary sewage recycling water consumption device |
| JP6670415B1 (en) * | 2019-03-01 | 2020-03-18 | 肇▲慶▼学院 | Intelligent purification equipment for nickel plating wastewater |
| AU2020102288A4 (en) * | 2020-06-30 | 2020-10-29 | Jiangsu Yongyi Environmental Protection Technology Co., Ltd. | Novel industrial sewage treatment facility |
| CN212476339U (en) * | 2020-06-28 | 2021-02-05 | 保定中宇环保设备有限公司 | High-precision filter |
| KR102221571B1 (en) * | 2020-09-23 | 2021-03-02 | 주식회사 케이디 | Filtering device for water treatment with improved backwash efficiency |
| CN213375430U (en) * | 2020-09-24 | 2021-06-08 | 新疆同济生态科技工程股份有限公司 | Pressure type coagulation reaction filter special for water plant |
| CN113620508A (en) * | 2021-07-22 | 2021-11-09 | 徐州宏巨机械制造有限公司 | Sewage treatment plant is used in mine |
| CN114887542A (en) * | 2022-03-30 | 2022-08-12 | 中国计量大学 | Method for conveying proportioned oil product and recovering waste liquid for green manufacturing factory |
| CN217377522U (en) * | 2021-06-24 | 2022-09-06 | 重庆增程科技有限公司 | 2-chlorine nicotinic acid waste water treatment device |
| CN217854802U (en) * | 2022-07-01 | 2022-11-22 | 安徽楚沣环境科技有限公司 | Wastewater treatment device for pig farm |
| CN116081899A (en) * | 2023-03-16 | 2023-05-09 | 中国水产科学研究院渔业工程研究所 | Seawater culture tail water treatment device and method |
-
2023
- 2023-10-20 CN CN202311363023.4A patent/CN117303544B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103140041A (en) * | 2011-11-28 | 2013-06-05 | 天津普林电路股份有限公司 | Membrane stripping section wire body with liquid-level alarm for high-density interconnection circuit board |
| US20140151294A1 (en) * | 2012-11-30 | 2014-06-05 | Tangent Company Llc | Method and Apparatus for Residential Water Recycling |
| CN206563467U (en) * | 2017-01-12 | 2017-10-17 | 云南经济管理学院 | A kind of heavy duty detergent graininess traditional Chinese medicine drying and screening installation |
| CN208545231U (en) * | 2018-07-13 | 2019-02-26 | 天津罗孚科技股份有限公司 | A kind of sanitary sewage recycling water consumption device |
| JP6670415B1 (en) * | 2019-03-01 | 2020-03-18 | 肇▲慶▼学院 | Intelligent purification equipment for nickel plating wastewater |
| CN212476339U (en) * | 2020-06-28 | 2021-02-05 | 保定中宇环保设备有限公司 | High-precision filter |
| AU2020102288A4 (en) * | 2020-06-30 | 2020-10-29 | Jiangsu Yongyi Environmental Protection Technology Co., Ltd. | Novel industrial sewage treatment facility |
| KR102221571B1 (en) * | 2020-09-23 | 2021-03-02 | 주식회사 케이디 | Filtering device for water treatment with improved backwash efficiency |
| CN213375430U (en) * | 2020-09-24 | 2021-06-08 | 新疆同济生态科技工程股份有限公司 | Pressure type coagulation reaction filter special for water plant |
| CN217377522U (en) * | 2021-06-24 | 2022-09-06 | 重庆增程科技有限公司 | 2-chlorine nicotinic acid waste water treatment device |
| CN113620508A (en) * | 2021-07-22 | 2021-11-09 | 徐州宏巨机械制造有限公司 | Sewage treatment plant is used in mine |
| CN114887542A (en) * | 2022-03-30 | 2022-08-12 | 中国计量大学 | Method for conveying proportioned oil product and recovering waste liquid for green manufacturing factory |
| CN217854802U (en) * | 2022-07-01 | 2022-11-22 | 安徽楚沣环境科技有限公司 | Wastewater treatment device for pig farm |
| CN116081899A (en) * | 2023-03-16 | 2023-05-09 | 中国水产科学研究院渔业工程研究所 | Seawater culture tail water treatment device and method |
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|---|---|
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