CN112407990A - Urea conveying system for producing automobile exhaust treatment liquid - Google Patents
Urea conveying system for producing automobile exhaust treatment liquid Download PDFInfo
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- CN112407990A CN112407990A CN202110093037.3A CN202110093037A CN112407990A CN 112407990 A CN112407990 A CN 112407990A CN 202110093037 A CN202110093037 A CN 202110093037A CN 112407990 A CN112407990 A CN 112407990A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/80—After-treatment of the mixture
- B01F23/808—Filtering the mixture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
- B01F33/813—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles mixing simultaneously in two or more mixing receptacles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G29/00—Rotary conveyors, e.g. rotating discs, arms, star-wheels or cones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
- B65G2203/042—Sensors
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to the field of urea delivery, in particular to a urea delivery system for producing automobile exhaust treatment liquid, which comprises a pressure sensor, a weighing cylinder and a dividing shaft, wherein the dividing shaft is arranged inside the weighing cylinder, four dividing plates are arranged outside the dividing shaft, a feeding cavity is formed between every two adjacent dividing plates and the inner wall of the weighing cylinder, a gap is arranged outside the weighing cylinder, a weighing block is arranged in the gap, a groove is arranged at the front end of the weighing block, a partition plate is arranged in the groove, the partition plate divides the groove into an upper groove and a lower groove, the pressure sensor is arranged in the lower groove through a first spring, a pressure probe is arranged in the upper groove, the lower end of the pressure probe penetrates through the partition plate and is opposite to the pressure sensor, the top end of, and the ball head is arranged, the ball head is elastically connected with the partition plate through a second spring, a backspacing cylinder is arranged outside the weighing cylinder, and a backspacing cylinder piston is connected with the weighing block. The urea quantitative conveying device can convey urea quantitatively and effectively remove other impurities in the urea.
Description
Technical Field
The invention relates to the field of urea conveying, in particular to a urea conveying system for producing an automobile exhaust treatment liquid.
Background
The automobile exhaust treating fluid is used for purifying automobile exhaust; ingredient in the tail gas treatment liquid includes urea, the quantitative weighing function that does not possess urea among the current urea conveyor, urea and deionized water have strict ratio requirement, and production automobile exhaust treatment liquid needs a large amount of urea, traditional mode need be stored urea in the storage room, adopt spiral delivery equipment to get through to the blending tank, urea arrives the factory after, need broken bag blowing, traditional mode manual operation, efficiency is very slow, high in labor strength, adopt traditional cutting device to cut at present, but the cutting saw bit is when rotatory, can break up the wrapping bag of urea wrapping bag cutting opening department, in sneaking into urea, follow-up influence urea mixes with the deionized water.
Disclosure of Invention
The invention aims to provide a urea conveying system for producing automobile exhaust treatment liquid, and mainly solves the problem that the existing urea conveying system does not have a weighing function.
In order to achieve the purpose, the invention adopts the following technical scheme:
the urea conveying system for producing the automobile exhaust treatment liquid comprises a spiral feeder, a controller, a pressure sensor, a weighing cylinder and a dividing shaft, wherein the dividing shaft can be arranged inside the weighing cylinder in a rotating mode around the axis of the weighing cylinder, four dividing plates which are arranged at equal included angles around the circumference of the dividing shaft are arranged outside the dividing shaft, a feeding cavity is formed between every two adjacent dividing plates and the inner wall of the weighing cylinder, a notch is formed in the outer side of the weighing cylinder, a weighing block is arranged in the notch, a groove is formed in the front end of the weighing block, a partition plate is arranged in the groove, the partition plate divides the groove into an upper groove and a lower groove, the pressure sensor is arranged in the lower groove through a first spring, a pressure probe is arranged in the upper groove, the lower end of the pressure probe penetrates through the partition plate and is opposite to the sensing end of the pressure sensor, the top end of the pressure probe extends to the outer side of the upper groove and is provided with a, the outside of a weighing cylinder is equipped with and returns the cylinder, and the stroke piston that returns the cylinder is connected with the piece of weighing, it is used for ordering about the front end of weighing the pouring weight and removes to the feed intracavity to return the cylinder, the bulb can contact the bottom that is in an graduated disk of breach position in all graduated disks, and the outside of a weighing cylinder is equipped with feed inlet and the discharge gate that corresponds from top to bottom, and the piece of weighing is in between discharge gate and the feed inlet, pressure sensor and controller electric connection, the blowing end and the feed inlet intercommunication of screw feeder.
Further, a first drainage cylinder is arranged below the weighing cylinder, a flow distribution plate is arranged in the first drainage cylinder and used for dividing an inner cavity of the first drainage cylinder into an upper cavity and a lower cavity which are arranged at an upper layer and a lower layer, the upper cavity is always communicated with the discharge hole, a drainage opening is formed in the flow distribution plate, the upper cavity is communicated with the lower cavity through the drainage opening, a second drainage cylinder communicated with the first drainage cylinder is arranged at the lower end of the first drainage cylinder, a flow distribution support is arranged in the second drainage cylinder and is flush with the end face of the second drainage cylinder, the flow distribution support is used for dividing the inner cavity of the second drainage cylinder into a plurality of flow distribution cavities which are arranged at equal intervals around the circumference of the second drainage cylinder, all the flow distribution cavities are communicated with the lower cavity, a drainage motor is arranged outside the first drainage cylinder, a vertical rotating shaft is arranged at the center of the flow distribution plate, and the top end of the rotating shaft, the drainage motor is in transmission connection with the splitter plate through a belt transmission mechanism and used for driving the splitter plate to rotate around the axis of the first drainage cylinder, the lower end of the first drainage cylinder is further provided with a plurality of pre-conveying tanks distributed at equal intervals around the circumference of the first drainage cylinder, all the pre-conveying tanks are in one-to-one up-and-down correspondence with all the splitting cavities, the upper end of each pre-conveying tank is communicated with the splitting cavities at the corresponding positions through a first conveying pipe, the lower end of each pre-conveying tank is provided with a second conveying pipe extending downwards, a filter screen is arranged in the lower end of each second conveying pipe, the lower end of each second conveying pipe is further provided with a purifying material pipe, the second conveying pipes are connected with the purifying material pipes through electromagnetic valves, the upper parts of the pre-conveying tanks are provided with injection ports, and the lower parts of the pre-conveying.
Furthermore, a plurality of first material shifting plates which are arranged around the circumferential direction of the first drainage cylinder at equal intervals are arranged at the bottom of the flow distribution plate, and the top and the bottom of each first material shifting plate are respectively in contact with the bottom of the flow distribution plate and the top of the flow distribution support.
Further, go up the fixed second switch-plate that is provided with in one side that keeps away from the discharge gate all the time of intracavity, the bottom of second switch-plate is equipped with the scrubbing brush, the scrubbing brush contacts the top of flow distribution plate all the time, and the one end and the pivot contact of second switch-plate to the pivot can rotate around the axis of first drainage tube and second switch-plate phase-match.
Further, go up the intracavity and still be provided with the probe plate that can follow the axis activity of first drainage tube, the probe plate is in the top of second switch plate all the time, the hole of dodging has been seted up at the center of probe plate, the probe plate is established in the pivot through dodging the pot head to leave the clearance with the pivot surface, through surveying spring elastic connection between the top of probe plate and the roof of epicoele, leave the punishment in advance interval between second switch plate and the probe plate, the roof of epicoele be equipped with be invert and with controller electric connection's infrared distance measuring sensor.
Further, the second feeding pipe is a spiral pipe.
Further, the second drainage tube is in a long tube shape, an opening air bag is arranged at the center of the lower end of the second drainage tube, a plurality of matching blocks are arranged on the edge of the bottom of the second drainage tube respectively, all the matching blocks correspond to all the shunting cavities one to one, each matching block is located beside one shunting cavity respectively, and the outer surface of the opening air bag can expand to be in contact with all the matching blocks.
The invention has the beneficial effects that: the automatic urea dosing device adopts the autorotation indexing shaft and the backspacing cylinder controlled by the controller, and can realize quantitative dosing after weighing, so that the dosing amount of urea is controllable, the proportion of urea to deionized water is controllable, and the production quality is effectively guaranteed;
the flow distribution plates capable of rotating automatically are adopted, so that the weighed urea can be uniformly distributed to all flow distribution cavities, the urea amount in each pre-conveying tank is uniform, and the urea and the deionized water in each pre-conveying tank can be mixed conveniently;
the first material shifting plate and the second material shifting plate can prevent urea from being accumulated and can be discharged into the shunting cavity immediately;
the detection plate and the detection spring are adopted, when the feeding distance can enable the feeding amount of urea in the upper cavity to be larger, the infrared distance measuring sensor returns the detected value to the controller, the controller controls the rollback cylinder, the urea amount in the upper cavity cannot be continuously accumulated too much until the blockage of the flow distribution plate is caused, the working frequency of the rollback cylinder is controlled, and the release of the urea environment in the upper cavity is achieved;
the second drainage tube adopts a long tube structure, can realize the quantitative urea of buffer memory, and when next batch of operation, can directly discharge through the second drainage tube, need not pass through a flow distribution cavity and a first drainage tube, greatly save time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a plan sectional view of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
FIG. 4 is an enlarged view at C of FIG. 1;
FIG. 5 is a schematic partial perspective view of the present invention;
FIG. 6 is a schematic structural view showing a state where the bottom opening of the flow dividing chamber is closed by the open bladder in the present invention;
FIG. 7 is a schematic view of the bottom opening of the flow dividing chamber in the present invention.
In the figure: 0. a pressure sensor; 1. a first spring; 2. a weighing cylinder; 3. a notch; 4. a feed inlet; 5. a discharge port; 6. weighing a weight block; 7. a partition plate; 8. a pressure probe; 9. a ball head; 10. a second spring; 11. a retraction cylinder; 12. an index shaft; 13. an index plate; 14. a feeding chamber; 15. a first drainage cylinder; 16. a flow distribution plate; 17. a drainage opening; 18. a drainage motor; 19. a rotating shaft; 20. a first kickoff plate; 21. a second kickoff plate; 22. a detection plate; 23. detecting a spring; 24. the material passing distance; 25. an infrared ranging sensor; 26. a second drainage cylinder; 27. a shunt bracket; 28. a shunting cavity; 29. an open air bag; 30. a matching block; 31. a pre-conveying tank; 32. a second feed tube; 33. a purifying material pipe; 34. an electromagnetic valve; 35. an injection port; 36. a reverse drainage port; 37. and (4) filtering the sieve.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the patent, and the specific meanings of the terms may be understood according to specific situations by those skilled in the art.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 7, a urea delivery system for producing an automobile exhaust treatment fluid comprises a screw feeder, a controller, a pressure sensor 0, a weighing cylinder 2 and a dividing shaft 12, wherein the dividing shaft 12 can be rotatably arranged inside the weighing cylinder 2 around the axis of the weighing cylinder 2, four dividing disks 13 are arranged outside the dividing shaft 12 and are arranged at equal included angles around the circumference of the dividing shaft, a feeding cavity 14 is formed between two adjacent dividing disks 13 and the inner wall of the weighing cylinder 2, a notch 3 is formed in the outer side of the weighing cylinder 2, a weighing block 6 is arranged in the notch 3, a groove is formed in the front end of the weighing block 6, a partition plate 7 is arranged in the groove, the groove is divided into an upper groove and a lower groove by the partition plate 7, the pressure sensor 0 is arranged in the lower groove through a first spring 1, a pressure probe 8 is arranged in the upper groove, the lower end of the pressure probe 8 penetrates through the partition plate 7 and is opposite to the sensing end of, the top end of the pressure probe 8 extends to the outside of the upper groove and is provided with a ball head 9, the ball head 9 is elastically connected with the partition plate 7 through a second spring 10, a backspacing cylinder 11 is arranged outside the weighing cylinder 2, a stroke piston of the backspacing cylinder 11 is connected with the weighing block 6, the backspacing cylinder 11 is used for driving the front end of the weighing block 6 to move into the feeding cavity 14, the ball head 9 can contact the bottom of one dividing disc 13 positioned at the notch 3 in all the dividing discs 13, the outer side of the weighing cylinder 2 is provided with a feeding port 4 and a discharging port 5 which correspond up and down, the weighing block 6 is positioned between the discharging port 5 and the feeding port 4, the pressure sensor 0 is electrically connected with the controller, and the discharging end of the screw feeder is communicated with the feeding port 4.
The weighing device is characterized in that a first drainage tube 15 is arranged below the weighing tube 2, a flow distribution plate 16 is arranged in the first drainage tube 15, the flow distribution plate 16 is used for dividing an inner cavity of the first drainage tube 15 into an upper cavity and a lower cavity which are arranged in an upper layer and a lower layer, the upper cavity is always communicated with the discharge hole 5, a drainage opening 17 is formed in the flow distribution plate 16, the upper cavity is communicated with the lower cavity through the drainage opening 17, a second drainage tube 26 communicated with the lower end of the first drainage tube 15 is arranged at the lower end of the first drainage tube 15, a flow distribution support 27 is arranged in the second drainage tube 26 and is flush with the end face of the second drainage tube 26, the flow distribution support 27 is used for dividing the inner cavity of the second drainage tube 26 into a plurality of flow distribution cavities 28 which are arranged at equal intervals around the circumference of the second drainage tube 26, all the flow distribution cavities 28 are communicated with the lower cavity, a drainage motor 18 is, the top end of the rotating shaft 19 is hinged with the top wall in the first drainage cylinder 15, the top wall and the top wall are coaxial, the drainage motor 18 is in transmission connection with the flow distribution plate 16 through a belt transmission mechanism and is used for driving the flow distribution plate 16 to rotate around the axis of the first drainage cylinder 15, the lower end of the first drainage cylinder 15 is further provided with a plurality of pre-conveying tanks 31 distributed at equal intervals around the circumference of the first drainage cylinder, all the pre-conveying tanks 31 respectively correspond to all the flow distribution cavities 28 up and down one by one, the upper end of each pre-conveying tank 31 is communicated with the flow distribution cavity 28 at the corresponding position through a first conveying pipe, the lower end of each pre-conveying tank 31 is provided with a second conveying pipe 32 extending downwards, the lower end of the second conveying pipe 32 is provided with a filter screen 37, the lower end of the second conveying pipe 32 is further provided with a purification material pipe 33, the second conveying pipe 32 is connected with the purification material pipe 33 through an electromagnetic valve 34, and the, the lower portion of the preliminary conveyance tank 31 is provided with a reverse drain port 36.
The bottom of the flow distribution plate 16 is provided with a plurality of first material shifting plates 20 which are arranged around the circumference of the first drainage cylinder 15 at equal intervals, and the top and the bottom of each first material shifting plate 20 are respectively contacted with the bottom of the flow distribution plate 16 and the top of the flow distribution bracket 27.
One side of the upper cavity which is always far away from the discharge hole 5 is fixedly provided with a second material shifting plate 21, the bottom of the second material shifting plate 21 is provided with a scrubbing brush, the scrubbing brush is always in contact with the top of the flow distribution plate 16, one end of the second material shifting plate 21 is in contact with a rotating shaft 19, and the rotating shaft 19 can rotate around the axis of the first drainage cylinder 15 and is matched with the second material shifting plate 21.
Go up the intracavity and still be provided with the probe plate 22 that can follow the axis activity of first drainage tube 15, probe plate 22 is in the top of second switch board 21 all the time, the hole of dodging has been seted up at probe plate 22's center, probe plate 22 establishes in pivot 19 through dodging the hole cover to leave the clearance with pivot 19 surface, through detecting spring 23 elastic connection between the top of probe plate 22 and the roof of epicoele, leave punishment in advance interval 24 between second switch board 21 and the probe plate 22, the roof of epicoele be equipped with be invert and with controller electric connection's infrared ranging sensor 25.
The second feeding pipe 32 is a spiral pipe.
The second drainage tube 26 is in a long tube shape, an opening air bag 29 is arranged in the center of the lower end of the second drainage tube 26, a plurality of matching blocks 30 are arranged on the edge of the bottom of the second drainage tube 26 respectively, all the matching blocks 30 correspond to all the diversion cavities 28 one to one, each matching block 30 is located on the side of one diversion cavity 28, and the outer surface of the opening air bag 29 can be expanded to be in contact with all the matching blocks 30.
The working principle of the invention is as follows: the indexing shaft 12 rotates, the feeding end of the screw feeder is communicated with the feeding hole 4, and the screw feeder is used for feeding urea into the feeding cavity 14; because the number of the index plates 13 is four, the included angle between each index plate 13 is 90 °, urea is accumulated on the index plate 13 in the feeding cavity 14 after entering the feeding cavity 14 corresponding to the feeding port 4 through the feeding port 4, because the index shaft 12 rotates, the accumulated gravity of urea presses the index plate 13, but the front end of the weighing block 6 is driven to move into the feeding cavity 14 under the action of the retraction cylinder 11, the ball head 9 can contact the bottom of one index plate 13 in the position of the notch 3 in all the index plates 13, namely the bottom of the index plate 13 containing the urea at the moment, so that the index plate 13 cannot rotate at the moment, urea is continuously dosed, the pressure applied to the index plate 13 is increased, the ball head 9 presses the second spring 10, the pressure probe 8 contacts the pressure sensor 0, the pressure sensor 0 contracts through the first spring 1 of the pressure sensor 0, and the pressure sensor 0 transmits the detected pressure signal value to the controller, the controller instructs the rollback cylinder 11 to work according to the information recorded in advance; when a set pressure value is reached, namely the controller instructs the stroke piston of the backspacing cylinder 11 to reset, the bearing block is drawn out from the feeding cavity 14, so that one dividing disc 13 at the notch 3 is rotated to the discharge port 5 under the support of no ball head 9 due to gravity, and the discharge port 5 releases the urea on the part of the urea on the dividing plate 16 on the first drainage cylinder 15;
the drainage motor 18 works to drive the rotating shaft 19 to carry the flow distribution plate 16 to rotate around the axis of the first drainage cylinder 15, and in the rotation process, the flow distribution plate 16 except the drainage opening 17 can also continuously rotate and corresponds to the discharge hole 5, so that material receiving is realized;
the first material shifting plate 20 is used for shifting the part beside the diversion cavity 28, namely the urea on the top part of the diversion bracket 27, and shifting the urea into the diversion cavity 28 after the urea enters the lower cavity through the diversion opening 17, so that the urea which is put in each diversion cavity 28 in real time is distributed uniformly;
the second material shifting plate 21 is used for preventing excessive accumulation of the part after only one drainage opening 17 is formed in the diversion plate 16 and the other part is solid, so that after the diversion plate 16 receives urea discharged from the discharge port 5 in rotation, the second material shifting plate 21 is fixed, and under the rotation of the diversion plate 16 carrying urea, the second material shifting plate 21 can realize a pushing action on the urea in a direction opposite to the direction of the diversion plate 16, the urea rotates on the diversion plate 16, the diversion plate 16 rotates counterclockwise towards the second material shifting plate 21, referring to fig. 3, at this time, the urea is accumulated on the diversion plate 16, and under the rotation direction of the diversion plate 16, the accumulated urea on the plate tends to contact with the second material shifting plate 21, so that the pushing action is formed, so that the urea can enter the drainage opening 17, does not build up on the diverter plate 16;
because there is only one drainage opening 17, when the urea is fed into the discharge port 5 more frequently, the leakage flow from the drainage opening 17 is prevented from being too slow, which results in the accumulation caused by the mismatch of the inlet and outlet, therefore, a detection plate 22 and a material passing space 24 are required to be arranged, the material passing space 24 causes the throughput of urea to be too large, the second material shifting plate 21 is shifted to cause the single-point accumulation of urea to be too high, the urea is on the diversion plate 16, the diversion plate 16 rotates towards the counterclockwise direction of the second material shifting plate 21, referring to fig. 3, at this time, the urea is in the accumulation state on the diversion plate 16, under the rotation direction of the diversion plate 16, the accumulated urea on the plate tends to contact with the second material shifting plate 21, thus forming the pushing action, but the urea amount on the diversion plate 16 is prevented from being too large, the pushing action of the second material shifting plate 21 on the accumulated urea is not in time, so, excessive urea is prevented from being excessively accumulated through the material passing interval 24, reaction force is generated on the rotation of the flow distribution plate 16, and at the moment, the urea which is excessively accumulated in a single point mode flows into the other side face of the second material distribution plate 21 through the material passing interval 24, so that the problem that the urea is excessively accumulated in a single point mode on one side, corresponding to the rotation direction of the flow distribution plate 16, of the second material distribution plate 21 is prevented from being excessively increased, and the problem that the urea is excessively accumulated in a local mode cannot be caused;
meanwhile, if the urea amount is too large and the urea accumulation on the flow distribution plate 16 is relatively high, the detection plate 22 is squeezed to press the detection spring 23 to move upwards, the infrared distance measuring sensor 25 measures the height of the detection plate 22 in real time and transmits the height to the controller, the controller judges that the urea accumulation in the upper cavity is too high according to a signal value transmitted by the infrared distance measuring sensor 25 and analyzes the signal value in a certain time range, if a set value is continuously kept, the reset of the retraction cylinder 11 is controlled, and the rotation frequency of the indexing disc 13 is lengthened, so that the urea amount in the upper cavity is relieved;
the urea is weighed by the feeding cavity 14, reaches the first drainage cylinder 15 from the discharge hole 5, and is uniformly distributed to all the diversion cavities 28 under the action of the diversion plate 16 and the drainage openings 17, so that the urea in each diversion cavity 28 can be thrown into the pre-conveying tank 31 corresponding to each diversion cavity 28;
deionized water at the upper part of the pre-conveying tank 31 flows into the pre-conveying tank 31 through the injection port 35, is primarily mixed with urea discharged from the lower row of the diversion cavity 28 in each pre-conveying tank 31, is then discharged through the second feeding pipe 32, and is finally pumped into the final mixing tank through the pump body;
as the urea is primarily mixed, some impurities and packaging bag fragments in the urea are filtered by the filter sieve 37; the filtering aperture of the filtering screen 37 is smaller than the normal urea specification, so that the filtering effect of impurities and packaging bag fragments is enhanced; because of the preliminary mixing, the urea specification becomes smaller and can pass through the filter sieve 37;
the second feeding pipe 32 is a spiral pipe, so that the flowing time of the urea in the shop is prolonged, the mixing time of the urea and the deionized water is prolonged, and a certain auxiliary effect on reducing the specification of the urea is achieved;
because the urea is scattered and conveyed by the plurality of pre-conveying tanks 31, the urea is mixed with the deionized water, reacts quickly, easily and quickly sinks through the filter sieve 37, and is pumped into the mixing tank; if urea is directly mixed with deionized water without being scattered and conveyed, a certain time is needed for reaction, and the time for passing through the filter sieve 37 is prolonged, which is not beneficial to production;
the second drainage cylinder 26 adopts a long cylinder structure, so that quantitative urea can be cached, and can be directly discharged through the second drainage cylinder 26 during next batch operation without passing through the diversion cavity 28 and the first drainage cylinder 15, so that the time is saved;
the opening air bag 29 is provided with an air inlet which is externally connected with an air pump, the opening air bag 29 expands under the action of the air pump, a limiting plate is arranged below the opening air bag 29, the limiting plate prevents the opening air bag 29 from expanding downwards and can only expand along the radial direction of the second drainage tube 26, the outer surface of the opening air bag 29 can expand to be in contact with all matching blocks 30, the opening and closing action on the opening at the bottom of the drainage cavity 28 is realized, and finally the basic condition that the second drainage tube 26 is used as a cache tube is realized;
the function of the solenoid valve 34 and the back-drain 36 is to flush the non-urea impurities on the sieve 37 out of the second feeding pipe 32 and the pre-delivery tank 31 by back-flushing water when they are too high.
It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.
Claims (7)
1. A urea conveying system for producing automobile exhaust treatment liquid comprises a spiral feeder and is characterized by further comprising a controller, a pressure sensor (0), a weighing cylinder (2) and a dividing shaft (12), wherein the dividing shaft (12) can be arranged inside the weighing cylinder (2) in a manner of rotating around the axis of the weighing cylinder (2), four dividing discs (13) which are arranged at equal included angles in the circumferential direction of the dividing shaft (12) are arranged outside the dividing shaft (12), a feeding cavity (14) is formed between every two adjacent dividing discs (13) and the inner wall of the weighing cylinder (2), a notch (3) is formed in the outer side of the weighing cylinder (2), weighing blocks (6) are arranged in the notches (3), a groove is formed in the front end of each weighing block (6), a partition plate (7) is arranged in each groove, each groove is divided into an upper groove and a lower groove by the partition plate (7), the pressure sensor (0) is arranged in the lower groove through a first spring (1), a pressure probe (8) is arranged in the upper groove, the lower end of the pressure probe (8) penetrates through the partition plate (7) and is opposite to the sensing end of the pressure sensor (0), the top end of the pressure probe (8) extends to the outside of the upper groove and is provided with a ball head (9), the ball head (9) is elastically connected with the partition plate (7) through a second spring (10), a backspacing cylinder (11) is arranged outside the weighing cylinder (2), a stroke piston of the backspacing cylinder (11) is connected with the weighing block (6), the backspacing cylinder (11) is used for driving the front end of the weighing block (6) to move into a feeding cavity (14), the ball head (9) can contact the bottom of one dividing disc (13) in the position of the notch (3) in all the dividing discs (13), a feeding port (4) and a discharging port (5) which correspond up and down are arranged on the outer side of the weighing cylinder (2), and the weighing block (6) is arranged between the discharging port (5, the pressure sensor (0) is electrically connected with the controller, and the discharging end of the screw feeder is communicated with the feeding hole (4).
2. The urea conveying system for producing the automobile exhaust treatment fluid according to claim 1, wherein a first drainage cylinder (15) is arranged below the weighing cylinder (2), a splitter plate (16) is arranged in the first drainage cylinder (15), the splitter plate (16) is used for dividing an inner cavity of the first drainage cylinder (15) into an upper cavity and a lower cavity which are arranged in an upper layer and a lower layer, the upper cavity is always communicated with the discharge hole (5), a drainage opening (17) is formed in the splitter plate (16), the upper cavity and the lower cavity are communicated through the drainage opening (17), a second drainage cylinder (26) communicated with the first drainage cylinder (15) is arranged at the lower end of the first drainage cylinder (15), a shunt bracket (27) is arranged in the second drainage cylinder (26), the shunt bracket (27) is flush with the end face of the second drainage cylinder (26), the shunt bracket (27) is used for dividing the inner cavity of the second drainage cylinder (26) into a plurality of shunt cavities (28) which are arranged at equal intervals in the circumferential direction around the second drainage cylinder (26), all the diversion cavities (28) are communicated with the lower cavity, a drainage motor (18) is arranged outside the first drainage cylinder (15), a vertical rotating shaft (19) is arranged at the center of the diversion plate (16), the top end of the rotating shaft (19) is hinged with the top wall in the first drainage cylinder (15) and is coaxial with the diversion plate (16), the drainage motor (18) is in transmission connection with the diversion plate (16) through a belt transmission mechanism and is used for driving the diversion plate (16) to rotate around the axis of the first drainage cylinder (15), a plurality of pre-conveying tanks (31) which are distributed at equal intervals around the circumference of the first drainage cylinder (15) are further arranged at the lower end of the first drainage cylinder (15), all the pre-conveying tanks (31) are respectively in up-and-down correspondence with all the diversion cavities (28) one by one, the upper end of each pre-conveying tank (31) is communicated with the diversion cavity (28) at the corresponding position through one first conveying pipe, and second conveying pipes (32) which extend downwards are arranged at the lower end of each pre-conveying tank (, a filter screen (37) is arranged in the lower end of the second feeding pipe (32), a purifying pipe (33) is further arranged at the lower end of the second feeding pipe (32), the second feeding pipe (32) is connected with the purifying pipe (33) through an electromagnetic valve (34), an injection port (35) is arranged at the upper part of the pre-conveying tank (31), and a reverse drainage port (36) is arranged at the lower part of the pre-conveying tank (31).
3. The urea conveying system for producing the automobile exhaust gas treatment liquid according to claim 2, wherein the bottom of the diversion plate (16) is provided with a plurality of first material shifting plates (20) which are arranged around the circumference of the first drainage cylinder (15) at equal intervals, and the top and the bottom of the first material shifting plates (20) are respectively in contact with the bottom of the diversion plate (16) and the top of the diversion bracket (27).
4. The urea conveying system for producing the automobile exhaust treatment fluid according to claim 2, wherein a second material shifting plate (21) is fixedly arranged on one side of the upper cavity which is always far away from the discharge hole (5), a hard brush is arranged at the bottom of the second material shifting plate (21), the hard brush is always in contact with the top of the flow distribution plate (16), one end of the second material shifting plate (21) is in contact with the rotating shaft (19), and the rotating shaft (19) can rotate around the axis of the first drainage cylinder (15) to be matched with the second material shifting plate (21).
5. The urea conveying system for producing the automobile exhaust treatment liquid according to claim 4, wherein a detection plate (22) capable of moving along an axis of the first drainage cylinder (15) is further arranged in the upper cavity, the detection plate (22) is always located above the second material shifting plate (21), an avoiding hole is formed in the center of the detection plate (22), the detection plate (22) is sleeved on the rotating shaft (19) through the avoiding hole, a gap is reserved between the detection plate (22) and the outer surface of the rotating shaft (19), the top of the detection plate (22) is elastically connected with the top wall of the upper cavity through a detection spring (23), a material passing interval (24) is reserved between the second material shifting plate (21) and the detection plate (22), and the top wall of the upper cavity is provided with an infrared distance measuring sensor (25) which is inverted and is electrically connected with the controller.
6. The urea delivery system for producing an automotive exhaust fluid according to claim 2, wherein the second feed pipe (32) is a helical pipe.
7. The urea delivery system for producing an automobile exhaust gas treatment liquid according to any one of claims 2 to 6, wherein the second drainage cylinder (26) is in a long cylinder shape, an open air bag (29) is arranged at the center of the lower end of the second drainage cylinder, a plurality of matching blocks (30) are respectively arranged on the bottom edge of the second drainage cylinder (26), all the matching blocks (30) respectively correspond to all the branch cavities (28) in a one-to-one mode, each matching block (30) is respectively arranged at the side of one branch cavity (28), and the outer surface of the open air bag (29) can be expanded to be in contact with all the matching blocks (30).
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| CN202110093037.3A CN112407990B (en) | 2021-01-25 | 2021-01-25 | Urea conveying system for producing automobile exhaust treatment liquid |
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| CN202110093037.3A CN112407990B (en) | 2021-01-25 | 2021-01-25 | Urea conveying system for producing automobile exhaust treatment liquid |
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| CN112407990B (en) | 2021-04-06 |
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Denomination of invention: Urea conveying system for producing automobile exhaust treatment liquid Effective date of registration: 20220328 Granted publication date: 20210406 Pledgee: Yantai Rural Commercial Bank Co.,Ltd. Zhifu District Hongkou sub branch Pledgor: YANTAI YINGDE PRECISION MACHINERY CO.,LTD. Registration number: Y2022980003329 |
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Date of cancellation: 20230306 Granted publication date: 20210406 Pledgee: Yantai Rural Commercial Bank Co.,Ltd. Zhifu District Hongkou sub branch Pledgor: YANTAI YINGDE PRECISION MACHINERY CO.,LTD. Registration number: Y2022980003329 |
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Denomination of invention: Urea conveying system for producing automotive exhaust gas treatment liquid Effective date of registration: 20230309 Granted publication date: 20210406 Pledgee: Yantai Rural Commercial Bank Co.,Ltd. Zhifu District Hongkou sub branch Pledgor: YANTAI YINGDE PRECISION MACHINERY CO.,LTD. Registration number: Y2023980034420 |