CN213558981U - Ammonia water injection device for thermoelectric boiler - Google Patents
Ammonia water injection device for thermoelectric boiler Download PDFInfo
- Publication number
- CN213558981U CN213558981U CN202021698603.0U CN202021698603U CN213558981U CN 213558981 U CN213558981 U CN 213558981U CN 202021698603 U CN202021698603 U CN 202021698603U CN 213558981 U CN213558981 U CN 213558981U
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- water
- water tank
- pipe
- fixedly connected
- rotating
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- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000002347 injection Methods 0.000 title claims abstract description 57
- 239000007924 injection Substances 0.000 title claims abstract description 57
- 235000011114 ammonium hydroxide Nutrition 0.000 title claims description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 200
- 239000007921 spray Substances 0.000 claims abstract description 26
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims description 38
- 238000004140 cleaning Methods 0.000 claims description 13
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 2
- 238000001802 infusion Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 244000309464 bull Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a thermoelectric boiler aqueous ammonia injection apparatus, including circulation wiper mechanism, storage mechanism and injection mechanism, circulation wiper mechanism fixed connection is on storing the mechanism, and injection mechanism rotates to be connected on storing the mechanism. Add water in the water tank is washd in the circulation, water flows in water tank and circulation washing water tank can be for the aqueous ammonia cooling in the water tank, prevent that the aqueous ammonia from volatilizing, can with the inside intercommunication of injection water tank when the change pipe rotates, the change pipe rotates the switch that can also open the water pump simultaneously, make the aqueous ammonia flow in from the water tank and spray the water tank, the volume that the water yield inductor can control the entering aqueous ammonia, when reaching the setting value, let motor III reversal round, stop the inflow of aqueous ammonia, spray the water pump with the aqueous ammonia spout from injection water pipe and atomising head, it can drive injection water pipe and atomising head rotation still to rotate the motor, it is more comprehensive to make the aqueous ammonia spray, a water that is used for carrying out the refrigerated to the aqueous ammonia can also wash the water tank, can.
Description
Technical Field
The utility model relates to an spray technical field, more specifically the thermoelectric boiler aqueous ammonia injection apparatus that says so.
Background
The utility model with the publication number of CN207546203U discloses a thermoelectric boiler ammonia water injection device, which comprises a body, wherein the body comprises a liquid storage tank, a purification bin and a return tank, supporting legs are arranged at the bottoms of the liquid storage tank, the purification bin and the return tank, a first infusion pump is arranged at the top of the liquid storage tank, a first infusion pipe is arranged at the inlet of the first infusion pump, a second infusion pipe is arranged at the outlet of the first infusion pump, a rotor flow meter is arranged in the second infusion pipe, a liquid spraying pipe is arranged at one end of the second infusion pipe, which extends to the upper part of the purification bin, an annular to-be-mixed bin is arranged at the top of the purification bin, a smoke inlet is arranged at one side of the annular to-be-mixed bin, a plurality of nozzles are arranged at the bottom of the purification bin, a liquid collecting bin is; the disadvantage is that the storage mechanism cannot be cleaned.
Disclosure of Invention
The utility model provides a thermoelectric boiler aqueous ammonia injection apparatus, its beneficial effect is for can wasing storage mechanism.
The utility model provides a thermoelectric boiler aqueous ammonia injection apparatus, includes circulation wiper mechanism, stores mechanism and injection mechanism, circulation wiper mechanism fixed connection is on storing the mechanism, and injection mechanism rotates to be connected on storing the mechanism, circulation wiper mechanism include circulation tank, oral siphon, circulating motor, circulating gear, the outlet pipe, the rotating tube, shower nozzle and ring gear, oral siphon fixed connection is on circulation tank, circulation motor fixed connection is in circulation tank's upper end, gear fixed connection is on circulation motor's output shaft, another gear fixed connection is on the rotating tube, gear and ring gear meshing transmission, outlet pipe fixed connection is in circulation tank's upper end, the rotating tube rotates to be connected on the outlet pipe, shower nozzle fixed connection is on the rotating tube, ring gear fixed connection is on the rotating tube.
As this technical scheme's further optimization, the utility model relates to a thermoelectric boiler aqueous ammonia injection apparatus storage mechanism include water tank, circulating pipe, outlet, water pump, bull stick, ring gear II and water pump switch, II fixed connections of ring gear are on the bull stick, circulating pipe fixed connection is equipped with the outlet on the water tank in the water tank, oral siphon fixed connection is on the water tank, water pump fixed connection is in the water tank, the bull stick rotates to be connected on the outlet pipe of water pump, the left end of water tank is equipped with water pump switch.
As a further optimization of the technical scheme, the utility model relates to a thermoelectric boiler ammonia water injection device the injection mechanism comprises a water injection tank, a motor III, a rotating gear, an injection pipe, an atomizing head, a rotating motor, a rotating gear, an injection water pump, a water quantity sensor, a water pipe and a semicircular water inlet, two rotating gears are arranged, one of the rotating gears is fixedly connected on an output shaft of the motor III, the other rotating gear is fixedly connected on an output shaft of the rotating motor, the motor III is fixedly connected on the right end of the water injection tank, the rotating gear is rotatably connected on the upper end of the water pipe, the two injection pipes are both fixedly connected on the upper end of the rotating gear, the two atomizing heads are respectively fixedly connected on the upper ends of the two injection pipes, the rotating motor is fixedly connected on the water injection tank, the injection water pump is fixedly connected on the bottom end of the, water pipe fixed connection is on spraying the water pump, and water yield inductor fixed connection is equipped with the semicircle water inlet at spraying water tank's bottom on the spraying water tank, and the rotary pipe rotates to be connected on spraying water tank.
As a further optimization of the technical proposal, the utility model relates to a thermoelectric boiler ammonia water injection device, all parts of the device all adopt corrosion resistant materials.
As a further optimization of the technical scheme, the utility model relates to a thermoelectric boiler aqueous ammonia injection apparatus, the outlet on be equipped with the valve.
As a further optimization of this technical scheme, the utility model relates to a thermoelectric boiler aqueous ammonia injection apparatus, circulating water tank in be equipped with two water pumps fixed connection respectively on outlet pipe and circulating pipe.
The utility model relates to a thermoelectric boiler aqueous ammonia injection apparatus's beneficial effect does:
an ammonia water jet device of a thermoelectric boiler can eliminate nitrogen oxide for the ammonia water sprayed by the thermoelectric boiler, dilute ammonia water is added into a water tank, the device is transported to a working place, water is added into a circulating cleaning water tank, the water flows in the water tank and the circulating cleaning water tank to cool the ammonia water in the water tank and prevent the ammonia water from volatilizing, a motor III rotates to drive a rotating pipe to rotate, the rotating pipe is communicated with the inside of the spraying water tank, a switch of a water pump can be turned on when the rotating pipe rotates, the ammonia water flows into the spraying water tank from the water tank, a water quantity sensor can control the amount of the entering ammonia water, the motor III rotates in a circle when a set value is reached, the communication between the spraying water tank and the rotating pipe is closed, the switch of the water pump can be touched again, the water pump is closed, when the ammonia water is sprayed to the thermoelectric boiler, the ammonia water is sprayed from the spraying pipe and a spray head by, make more comprehensive that the aqueous ammonia sprayed, more even, let neutralization effect better for carrying out refrigerated water to the aqueous ammonia and can also wasing the water tank, water from the shower nozzle blowout, from the outlet inflow, can circulate the washing to the water tank, make full use of water resource.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of an ammonia water injection device of a thermoelectric boiler of the present invention.
Fig. 2 is a schematic structural view of the circulation cleaning mechanism.
Fig. 3 is a schematic structural diagram of the storage mechanism.
Fig. 4 is a partially enlarged view of the storage mechanism.
Fig. 5 is a schematic structural view of the ejection mechanism.
Fig. 6 is a schematic sectional structure view of the ejection mechanism.
In the figure: a circulating cleaning mechanism 1; 1-1 of a water tank; 1-2 of a water inlet pipe; 1-3 of a circulating motor; 1-4 of a circulating gear; a water outlet pipe 1-5; rotating the tube 1-6; 1-7 of a spray head; 1-8 parts of a gear ring; a storage mechanism 2; 2-1 of a water tank; a circulation pipe 2-2; 2-3 of a water outlet; 2-4 of a water pump; rotating the tube 2-5; 2-6 of a gear ring; 2-7 of a water pump switch; an injection mechanism 3; a spray water tank 3-1; 3-2 of a motor; rotating a gear 3-3; 3-4 parts of an injection pipe; 3-5 parts of a spray head; rotating the motor 3-6; 3-7 of a rotating gear; 3-8 parts of an injection water pump; 3-9 parts of a water quantity sensor; 3-10 parts of a water pipe; 3-11 parts of a semicircular water inlet.
Detailed Description
The first embodiment is as follows:
the following describes the present embodiment with reference to fig. 1, 2, 3, 4, 5, and 6, the present invention relates to the technical field of injection, and more specifically to an ammonia water injection device for a thermoelectric boiler, which comprises a circulating cleaning mechanism 1, a storage mechanism 2, and an injection mechanism 3, wherein the circulating cleaning mechanism 1 is fixedly connected to the storage mechanism 2, the injection mechanism 3 is rotatably connected to the storage mechanism 2, the circulating cleaning mechanism 1 comprises a circulating water tank 1-1, an inlet pipe 1-2, a circulating motor 1-3, a circulating gear 1-4, an outlet pipe 1-5, a rotating pipe 1-6, a spray head 1-7, and a toothed ring 1-8, the inlet pipe 1-2 is fixedly connected to the circulating water tank 1-1, the circulating motor 1-3 is fixedly connected to the upper end of the circulating water tank 1-1, the gear 1-4 is fixedly connected to an output shaft of the circulating motor 1-3, the other gear 1-4 is fixedly connected to a rotating pipe 1-6, the gear 1-4 is in meshing transmission with a gear ring 1-8, a water outlet pipe 1-5 is fixedly connected to the upper end of the circulating water tank 1-1, the rotating pipe 1-6 is rotatably connected to the water outlet pipe 1-5, a spray head 1-7 is fixedly connected to the rotating pipe 1-6, and the gear ring 1-8 is fixedly connected to the rotating pipe 1-6; water is added into a circulating water tank 1-1, the water flows into a spray head 1-7 and a small spray head 1-8 from a water outlet pipe 1-5 to be sprayed out, a storage device 2 is cleaned, an output shaft of a motor 1-3 rotates to drive a gear 1-4 and a toothed ring 1-8 to rotate, and a rotating pipe 1-6 rotates along with the rotation of the toothed ring 1-8, so that the water in the spray head 1-7 is sprayed out in a rotating mode, and the cleaning is more comprehensive.
The second embodiment is as follows:
the present embodiment will be described with reference to fig. 1, 2, 3, 4, 5 and 6, and the present embodiment will further describe the first embodiment, the storage mechanism 2 comprises a water tank 2-1, a circulating pipe 2-2, a water outlet 2-3, a water pump 2-4, a rotating pipe 2-5, a gear ring II 2-6 and a water pump switch 2-7, wherein the gear ring II 2-6 is fixedly connected to the rotating pipe 2-5, the circulating pipe 2-2 is fixedly connected to the inside of the water tank 2-1, the water outlet 2-3 is arranged on the water tank 2-1, a water inlet pipe 1-2 is fixedly connected to the inside of the water tank 2-1, the water pump 2-4 is fixedly connected to the inside of the water tank 2-1, the rotating pipe 2-5 is rotatably connected to a water outlet pipe of the water pump 2-4, and the water pump switch 2-7 is arranged at the left; the water in the circulating pipe 2-2 flows circularly to achieve the effect of cooling the ammonia water, the ammonia water is prevented from volatilizing, the gear ring II 2-6 drives the rotating pipe 2-5 to rotate, the water pump switch 2-7 is touched, the water pump 2-4 is turned on, the ammonia water is guided into the injection mechanism 1, the gear II 2-6 rotates reversely to drive the rotating pipe 2-5 to rotate reversely, the water pump switch 2-7 is touched, and the water pump 2-4 is turned off.
The third concrete implementation mode:
the second embodiment is further described with reference to fig. 1, 2, 3, 4, 5 and 6. the second embodiment is further described, where the spray mechanism 3 includes a spray water tank 3-1, a motor iii 3-2, a rotary gear 3-3, a spray pipe 3-4, a spray head 3-5, a rotary motor 3-6, a rotary gear 3-7, a spray water pump 3-8, a water quantity sensor 3-9, a water pipe 3-10 and a semicircular water inlet 3-11, and is provided with two rotary gears 3-7, one of the rotary gears 3-7 is fixedly connected to an output shaft of the motor iii 3-2, the other rotary gear 3-7 is fixedly connected to an output shaft of the rotary motor 3-6, the motor iii 3-2 is fixedly connected to the right end of the spray water tank 3-1, a rotating gear 3-3 is rotatably connected to the upper end of a water pipe 3-10, two spraying pipes 3-4 are fixedly connected to the upper end of the rotating gear 3-3, two spraying heads 3-5 are respectively and fixedly connected to the upper ends of the two spraying pipes 3-4, a rotating motor 3-6 is fixedly connected to a spraying water tank 3-1, a spraying water pump 3-8 is fixedly connected to the bottom end of the spraying water tank 3-1, the water pipe 3-10 is fixedly connected into the spraying water tank 3-1, the water pipe 3-10 is fixedly connected to the spraying water pump 3-8, a water quantity sensor 3-9 is fixedly connected to the bottom end of the spraying water tank 3-1, a semicircular water inlet 3-11 is formed in the spraying water tank, and a rotating pipe 2-5 is rotatably connected to the spraying water tank 3; an output shaft of the motor III 3-2 rotates to drive the gear II 2-6 to rotate, ammonia water enters the injection water tank 3-1 from the water tank 2-1, when the ammonia water amount reaches a set value, the water amount sensor 3-9 controls the motor III 3-2 to be closed, the inflow of the ammonia water is stopped, the ammonia water flows from the injection water pump 3-8 to the water pipe 3-10 and is finally sprayed out from the injection pipe 3-4 and the spray head 3-5, the output shaft of the rotating motor 3-6 rotates to drive the rotating gear 3-7 and the rotating teeth 3-3 to rotate, and the injection pipe 3-4 fixedly connected to the rotating teeth 3-3 is driven to rotate, so that the coverage area of the ammonia water sprayed out by the spray head 3-5 is larger, the spraying is more comprehensive and uniform, and the neutralizing effect is better.
The fourth concrete implementation mode:
in the following, the present embodiment will be described with reference to fig. 1, 2, 3, 4, 5 and 6, and the third embodiment will be further described, in which all parts of the apparatus are made of corrosion-resistant materials, because ammonia water is corrosive, and the apparatus is prevented from being out of service due to the corrosion of the materials by ammonia water.
The fifth concrete implementation mode: the third embodiment is further described with reference to fig. 1, 2, 3, 4, 5, and 6, wherein a valve is disposed on the drain port 2-3, and is opened during cleaning and closed during operation to prevent the ammonia water and water from flowing through each other.
The sixth specific implementation mode:
in the third embodiment, two water pumps are respectively and fixedly connected to the water outlet pipe 1-5 and the circulating pipe 2-2 in the circulating water tank to provide power for cleaning and provide power for circulating water in the circulating pipe 2-2.
The utility model relates to a thermoelectric boiler aqueous ammonia injection apparatus's theory of operation: an output shaft of the motor III 3-2 rotates to drive the gear II 2-6 to rotate, the gear II 2-6 drives the rotating pipe 2-5 to rotate, a water pump switch 2-7 is touched, the water pump 2-4 is turned on, the rotating pipe 2-5 is communicated with the inside of the injection water tank 3-1 after rotating, ammonia water is led into the injection mechanism 1, when the ammonia water amount reaches a set value, the water amount sensor 3-9 controls the output shaft of the motor III 3-2 to rotate for a half cycle in a reverse direction, the rotating pipe 2-5 is driven to rotate for a half cycle in a reverse direction, the communication between the rotating pipe 2-5 and the inside of the injection water tank is closed, the water pump 2-7 is touched, the water pump 2-4 is closed, the inflow of the ammonia water is stopped, the ammonia water is sprayed from the injection water pump 3-8 to the water pipe 3-10, the output shaft of the rotating motor 3-6 rotates to drive the rotating gear 3-7 and the rotating gear 3-3 to rotate, and drive the injection pipe 3-4 fixedly connected to the rotating gear 3-3 to rotate, so that the coverage area of the ammonia water sprayed by the spray head 3-5 is larger, the spraying is more comprehensive and uniform, the neutralization effect is better, the water in the circulating pipe 2-2 circularly flows to achieve the effect of cooling the ammonia water, the volatilization of the ammonia water is prevented, the water flows into the spray head 1-7 from the water outlet pipe 1-5 to be sprayed out, the cleaning of the storage device 2 is completed, the output shaft of the motor 1-3 rotates to drive the two gears 1-4 to rotate, the rotating pipe 1-6 rotates along with the rotation of the gears 1-4, so that the water in the spray head 1-7 is rotatably sprayed out, the cleaning can be more comprehensive, and the water is, but also can clean the water tank 2-1, effectively utilizes water resources in the circulating process, and prevents the waste of the water resources.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions and substitutions which can be made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a thermoelectric boiler aqueous ammonia injection apparatus, includes circulation wiper mechanism (1), stores mechanism (2) and injection mechanism (3), and circulation wiper mechanism (1) fixed connection is on storing mechanism (2), and injection mechanism (3) rotate to be connected on storing mechanism (2), its characterized in that: the circulating cleaning mechanism (1) comprises a circulating water tank (1-1), a water inlet pipe (1-2), a circulating motor (1-3), a circulating gear (1-4), a water outlet pipe (1-5), a rotating pipe (1-6), a spray head (1-7) and a gear ring (1-8), wherein the water inlet pipe (1-2) is fixedly connected to the circulating water tank (1-1), the circulating motor (1-3) is fixedly connected to the upper end of the circulating water tank (1-1), the gear (1-4) is fixedly connected to an output shaft of the circulating motor (1-3), the other gear (1-4) is fixedly connected to the rotating pipe (1-6), the gear (1-4) is in meshing transmission with the gear ring (1-8), the water outlet pipe (1-5) is fixedly connected to the upper end of the circulating water tank (1-1), the rotating pipes (1-6) are rotatably connected to the water outlet pipes (1-5), the spray heads (1-7) are fixedly connected to the rotating pipes (1-6), and the gear rings (1-8) are fixedly connected to the rotating pipes (1-6).
2. The ammonia water injection device of the thermoelectric boiler as claimed in claim 1, wherein: the storage mechanism (2) comprises a water tank (2-1), a circulating pipe (2-2), a water outlet (2-3), a water pump (2-4), a rotating pipe (2-5), a gear ring II (2-6) and a water pump switch (2-7), the gear ring II (2-6) is fixedly connected to the rotating pipe (2-5), the circulating pipe (2-2) is fixedly connected to the inside of the water tank (2-1), a water outlet (2-3) is formed in the water tank (2-1), the water inlet pipe (1-2) is fixedly connected to the water tank (2-1), the water pump (2-4) is fixedly connected to the inside of the water tank (2-1), the rotating pipe (2-5) is rotatably connected to a water outlet pipe of the water pump (2-4), and a water pump switch (2-7) is arranged at the left end of the water tank (2-1).
3. The ammonia water injection device of the thermoelectric boiler as claimed in claim 2, wherein: the spraying mechanism (3) comprises a spraying water tank (3-1), a motor III (3-2), rotating gears (3-3), a spraying pipe (3-4), a spraying head (3-5), a rotating motor (3-6), rotating gears (3-7), a spraying water pump (3-8), a water quantity sensor (3-9), a water pipe (3-10) and a semicircular water inlet (3-11), and is provided with two rotating gears (3-7), wherein one rotating gear (3-7) is fixedly connected to an output shaft of the motor III (3-2), the other rotating gear (3-7) is fixedly connected to an output shaft of the rotating motor (3-6), and the motor III (3-2) is fixedly connected to the right end of the spraying water tank (3-1), the rotary gear (3-3) is rotatably connected to the upper end of the water pipe (3-10), the two spraying pipes (3-4) are fixedly connected to the upper end of the rotary gear (3-3), the two spraying heads (3-5) are respectively fixedly connected to the upper ends of the two spraying pipes (3-4), the rotary motor (3-6) is fixedly connected to the spraying water tank (3-1), the spraying water pump (3-8) is fixedly connected to the bottom end of the spraying water tank (3-1), the water pipe (3-10) is fixedly connected into the spraying water tank (3-1), the water pipe (3-10) is fixedly connected to the spraying water pump (3-8), the water quantity sensor (3-9) is fixedly connected to the bottom end of the spraying water tank (3-1), and the spraying water tank is provided with a semicircular water inlet (3-11), the rotating pipe (2-5) is rotationally connected with the injection water tank (3-1).
4. The ammonia water injection device of the thermoelectric boiler as claimed in claim 3, wherein: all parts of the device are made of corrosion-resistant materials.
5. The ammonia water injection device of the thermoelectric boiler as claimed in claim 3, wherein: a valve is arranged on the water outlet (2-3).
6. The ammonia water injection device of the thermoelectric boiler as claimed in claim 3, wherein: two water pumps are arranged in the circulating water tank and are respectively and fixedly connected to the water outlet pipes (1-5) and the circulating pipe (2-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021698603.0U CN213558981U (en) | 2020-08-14 | 2020-08-14 | Ammonia water injection device for thermoelectric boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021698603.0U CN213558981U (en) | 2020-08-14 | 2020-08-14 | Ammonia water injection device for thermoelectric boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213558981U true CN213558981U (en) | 2021-06-29 |
Family
ID=76554978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021698603.0U Expired - Fee Related CN213558981U (en) | 2020-08-14 | 2020-08-14 | Ammonia water injection device for thermoelectric boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213558981U (en) |
-
2020
- 2020-08-14 CN CN202021698603.0U patent/CN213558981U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210629 |
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| CF01 | Termination of patent right due to non-payment of annual fee |