CN219482203U - A spiral feeding device for dry process denitration - Google Patents
A spiral feeding device for dry process denitration Download PDFInfo
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- CN219482203U CN219482203U CN202320514543.XU CN202320514543U CN219482203U CN 219482203 U CN219482203 U CN 219482203U CN 202320514543 U CN202320514543 U CN 202320514543U CN 219482203 U CN219482203 U CN 219482203U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses a spiral feeding device for dry denitration; relates to the field of denitration process feeding devices; comprises a mounting frame body, a feeding hopper, a driving motor component, a spiral feeding component and a sight glass bin component; the feeding hopper is fixedly arranged on the mounting frame body, and a discharge hole of the feeding hopper is connected with a feed hole of the spiral feeding assembly; the discharge port of the spiral feeding assembly is connected with the feed port of the sight glass bin assembly; the output end of the driving motor assembly is tightly connected with the spiral feeding assembly through the set screw, the original key connection structure mode is changed into the mode of tightly connecting through the set screw through the spiral feeding assembly and the driving motor assembly, so that the spiral feeding assembly is effectively prevented from falling off on the driving motor assembly, the normal supply of urea is ensured, and furthermore, the normal supply of the spiral feeding assembly can calculate the urea supply amount in unit time accurately, and the treatment effect of denitration waste gas treatment can be ensured.
Description
Technical Field
The utility model relates to the field of denitration process feeding devices, in particular to a spiral feeding device for dry denitration.
Background
The dry denitration technology is to spray solid powdered denitration agent such as urea into a waste heat boiler flue in a pneumatic conveying mode, decompose the powdered denitration agent to release high-activity amino free radicals through high-temperature air in the boiler flue, and react the amino groups with nitrogen oxides in the flue gas to reduce the nitrogen oxides into N2.
In the dry denitration process, urea is usually conveyed into a sight glass bin by a feed hopper through a screw feeding device under the drive of a driving mechanism, and then is sprayed into a waste heat boiler channel by pneumatic conveying in the sight glass bin, a common mechanism for feeding of the screw feeding device is a screw shaft, the screw shaft has better application in the material conveying direction with larger conveying capacity, and the conveying capacity is usually calculated in tons, but in the dry denitration process, the using amount of the urea is smaller and is calculated in a unit of several kilograms or more than ten kilograms, so even the miniature screw shaft with the smallest model in the industry cannot meet the actual use; therefore, the screw shaft adopts a custom processing mode, but when in use, the screw shaft is separated from the output shaft of the driving device and falls off frequently after operation according to the design that the screw shaft is connected with the output shaft of the driving motor in a traditional key connection mode which is commonly designed in industry; thereby affecting the normal urea supply.
Disclosure of Invention
In order to solve the technical problem that the connection of the spiral shaft in the customized design and the output shaft of the driving mechanism is easy to break away and fall off so as to influence normal urea supply, the utility model provides a spiral feeding device for dry denitration.
The technical problems of the utility model are realized by the following technical scheme: a spiral feeding device for dry denitration comprises a mounting frame body, a feeding hopper, a driving motor assembly, a spiral feeding assembly and a sight glass bin assembly; the feeding hopper is fixedly arranged on the mounting frame body, and a discharge hole of the feeding hopper is connected with a feed hole of the spiral feeding assembly; the discharge port of the spiral feeding assembly is connected with the feed port of the sight glass bin assembly; the output end of the driving motor assembly is tightly propped against the spiral feeding assembly through a set screw.
Through using above technical scheme, the structure mode of spiral feeding subassembly and driving motor subassembly with original key connection changes into the mode of tight connection in top through holding screw to effectively prevent that spiral feeding subassembly from droing on driving motor subassembly, guarantee the normal supply of urea, and then, the normal supply of spiral feeding subassembly, urea supply in unit time can be comparatively accurate calculation, and then the treatment effect of denitration exhaust-gas treatment can be ensured.
Preferably, the spiral feeding assembly comprises a spiral feeding bin and a spiral shaft, one end of the spiral feeding bin is connected with the sight glass bin assembly in a penetrating way, and the other end of the spiral feeding bin is fixedly connected with the driving motor assembly; the screw shaft is arranged in the screw feeding bin and is tightly propped against the output end of the driving motor assembly through the set screw.
Preferably, the screw shaft includes a screw portion and a shaft coupling portion; the shaft coupling part is provided with a shaft coupling hole along the axis of the shaft axis direction, and the shaft coupling part is provided with a set screw hole penetrating through the shaft coupling hole; the set screw is in threaded connection with the set screw hole.
Preferably, the number of the set screw holes is two, and the distance between the two set screw holes is a predetermined standard distance.
Preferably, the set screw is a flat head screw.
Through using above technical scheme, set screw hole has been seted up on the hookup of screw axis, replace the connected mode of key connection, set screw passes through the key hole top tightly to connect the gomphosis on hookup epaxial driving motor assembly's of screw axis epaxial keyway, thereby effectively prevent to drop between output shaft and the screw axis, and then the quantity in set screw hole is two sets of preferably, set up respectively in the both sides position that corresponds output shaft keyway, carry out the both ends top tightly, prevent that its connection from rocking, the flat head screw makes the tight effect of top more firm.
Preferably, the sight glass bin assembly comprises a sight glass bin body, a pneumatic conveying pipe and a sight glass end cover; the upper part of the sight glass bin body is detachably connected with a sight glass end cover; a pneumatic conveying pipe is arranged in the sight glass bin body in a penetrating manner, and an air outlet of the pneumatic conveying pipe is close to a discharge hole of the sight glass bin body; the feed inlet of the sight glass bin body is communicated with the discharge outlet of the spiral feeding component.
Preferably, the mirror cap is plexiglas.
Preferably, the automatic feeding device further comprises a weighing assembly, wherein the upper part of the feeding hopper is fixedly arranged on the mounting frame body through the weighing assembly; the weighing assembly is a weighing sensor.
Through the technical scheme, the weighing sensor is more accurate to record the urea quantity change in the feed hopper in unit time, so that the feed quantity is accurately recorded by combining the feed reference of the screw shaft in unit time to match the denitration effect in the flue gas pipeline, and the better denitration emission effect is achieved.
In summary, the utility model has the following beneficial effects:
1. according to the spiral feeding device for dry denitration, the original key connection structure mode is changed into the tightly-pushing connection mode through the set screw through the spiral feeding component and the driving motor component, so that the spiral feeding component is effectively prevented from falling off from the driving motor component, normal urea supply is guaranteed, the normal urea supply of the spiral feeding component is further guaranteed, the urea supply in unit time can be accurately calculated, and the treatment effect of denitration waste gas treatment can be further guaranteed.
2. Further, set screw holes are formed in the shaft connecting portion of the screw shaft, the connection mode of key connection is replaced, set screws are tightly propped against key grooves on an output shaft of a driving motor assembly which is embedded in the shaft connecting portion through the set screw holes, accordingly, falling between the output shaft and the screw shaft is effectively prevented, the number of the set screw holes is preferably two, the set screw holes are respectively arranged at two side positions corresponding to the key grooves of the output shaft, two ends are tightly propped against, connection shaking of the set screw is prevented, and the flat head screws enable the propping effect to be firmer.
3. And thirdly, setting a weighing sensor, and more accurately recording the urea quantity change in a feed hopper in unit time, so that the feed quantity is accurately recorded by combining the feed reference of a screw shaft in unit time to match the denitration effect in a flue gas pipeline, and the better denitration emission effect is achieved.
Drawings
FIG. 1 is a front view showing the structure of a screw feeder for dry denitration according to the present utility model
FIG. 2 is a structural elevation view of the screw shaft;
FIG. 3 is an enlarged schematic view of the structure of FIG. 1 at A;
FIG. 4 is a schematic view of the internal structure of the mirror housing;
fig. 5 is a front cross-sectional view of the mirror housing assembly.
Reference numerals illustrate:
1. a mounting frame body; 2. a feed hopper; 3. a weighing assembly; 4. a drive motor assembly; 5. a spiral feeding assembly; 51. spiral feeding bin; 52. a screw shaft; 521. a screw portion; 522. a shaft coupling portion; 523. a shaft connecting hole; 524. a set screw hole; 6. a mirror housing assembly; 61. a sight glass bin; 62. a pneumatic conveying pipe; 63. a sight glass end cap; 7. and (5) setting the screw.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
Example 1:
the embodiment discloses a spiral feeding device for dry denitration, as shown in figures 1-5; a spiral feeding device for dry denitration comprises a mounting frame body 1, a feeding hopper 2, a driving motor assembly 4, a spiral feeding assembly 5 and a sight glass bin assembly 6; wherein, the feed hopper 2 is fixedly arranged on the mounting frame body 1, and the feed hopper 2 is used for regularly containing urea with a certain amount; the discharge port of the feed hopper 2 is positioned at the bottom of the feed hopper 2, and the discharge end of the feed hopper is connected with the feed port of the spiral feed assembly 5; for feeding urea raw material to the screw feeding assembly 5 for feeding; the discharge port of the spiral feeding assembly 5 is connected with the feed port of the sight glass bin assembly 6, and is used for conveying urea materials in the spiral feeding assembly 5 to the sight glass bin assembly 6; the driving motor assembly 4 is used as a power mechanism for driving the spiral feeding assembly 5 and comprises a driving motor and a speed reducer, and the driving motor preferably adopts a stepping motor; the fixed mounting of driving motor subassembly 4 is on the mounting bracket body 1, and its output passes through holding screw 7 top tightly and connects spiral feeding subassembly 5.
The spiral feeding assembly 5 comprises a spiral feeding bin 51 and a spiral shaft 52, the spiral feeding bin 51 is of a strip-shaped bin body structure, one end of a bin body of the spiral feeding bin 51 is communicated with an inner cavity of a sight glass bin body 61 in the sight glass bin assembly 6, and the other end of the bin body of the spiral feeding bin 51 is fixedly provided with a driving motor assembly 4; the output end of the driving motor assembly 4 is positioned in the mirror bin 61; the screw shaft 52 is arranged in the screw feed bin 51, and the connecting end of the screw shaft 52 is tightly propped against the output end of the driving motor assembly 4 through the set screw 7.
The method comprises the following specific steps: the screw shaft 52 includes a screw portion 521 and a coupling portion 522; screw 521 is provided with a helical blade; the center of the side part of the coupling part 522 is provided with a coupling hole 523 along the axial direction, and the coupling hole 523 is used for being embedded and connected with an output shaft of a speed reducer of the driving motor assembly 4; meanwhile, a set screw hole 524 is formed in the shaft body of the coupling part 522, and the set screw hole 524 is a threaded hole; the set screw hole 524 penetrates the coupling hole 523; the set screw 7 is screwed through the set screw hole 524, and the threaded end of the set screw 7 extends into the coupling hole 523 to be in contact with a key groove on the output shaft which is connected in a fitting manner in the coupling hole 523.
Further, the number of the set screw holes 524 is preferably two, the axial distance between the two set screw holes 524 is a predetermined standard distance, that is, the maximum distance between the two set screw holes 524 is less than or equal to the length dimension of the key slot on the output shaft of the speed reducer, and the set screw 7 is preferably a flat head screw, so that the set screw 7 can better tightly prop against the output shaft of the speed reducer, and the screw shaft is prevented from falling off.
Wherein the sight glass bin assembly 6 comprises a sight glass bin body 61, a pneumatic conveying pipe 62 and a sight glass end cover 63; the upper part of the sight glass bin body 61 is detachably connected with a sight glass end cover 63 through bolts; the sight glass end cover 63 is made of plexiglas, and the sight glass end cover 63 is used for observing the feeding state in the sight glass bin 61 at any time so as to observe whether the sight glass bin is blocked or not in time; meanwhile, a pneumatic conveying pipe 62 is arranged in the sight glass bin body 61 in a penetrating manner, an air inlet of the pneumatic conveying pipe 62 is arranged outside the sight glass bin body 61 in a penetrating manner, and the air inlet is connected with an air compressor for supplying high-pressure air; the air outlet of the pneumatic conveying pipe 62 is arranged at a position close to the discharge port of the sight glass bin body 61 so as to blow out urea raw materials; the feed inlet of sight glass storehouse body 61 sets up on the lateral wall of sight glass storehouse body 61, communicates the discharge gate of spiral feeding assembly 5.
Example 2: compared with embodiment 1, the further improvement of this embodiment is that: be equipped with weighing module 3, be provided with 3 or 4 weighing module 3 in the upper portion circumference of feed hopper 2, feed hopper 2 is through weighing module 3 fixed connection on mounting bracket body 1, weighing module 3 preferably adopts weighing sensor, from this, weighing module 3 real-time supervision feed hopper 2's weight variation, and then can accurately obtain the urea supply in the unit time, guarantees the best urea supply, is convenient for the control to denitration technology.
The working principle of the spiral feeding device for dry denitration of the utility model is as follows: the urea raw materials are stored in the feed hopper 2 regularly, the discharge end of the feed hopper 2 conveys urea to the feed inlet of the spiral feed bin 51, the driving motor assembly 4 drives the spiral shaft 52 to rotate, the urea in the spiral feed bin 51 is spirally conveyed into the sight glass bin 61, the pneumatic conveying pipe 62 receives high-pressure gas, the urea in the sight glass bin 61 is blown out from the bin discharge outlet in a pneumatic conveying mode, and the urea is conveyed into the reaction pipeline through the conveying pipeline to perform denitration reaction.
The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification and equivalent changes to the above-mentioned embodiments according to the technical substance of the present utility model are still within the protection scope of the technical solution of the present utility model.
Claims (8)
1. A spiral feeding device for dry denitration, its characterized in that: comprises a mounting frame body (1), a feed hopper (2), a driving motor component (4), a spiral feeding component (5) and a sight glass bin component (6); the feeding hopper (2) is fixedly arranged on the mounting frame body (1), and a discharge hole of the feeding hopper (2) is connected with a feed hole of the spiral feeding component (5); the discharge port of the spiral feeding assembly (5) is connected with the feed port of the sight glass bin assembly (6); the output end of the driving motor assembly (4) is tightly propped against the spiral feeding assembly (5) through the set screw (7).
2. A screw feeder for dry denitration according to claim 1, characterized in that: the spiral feeding assembly (5) comprises a spiral feeding bin (51) and a spiral shaft (52), one end of the spiral feeding bin (51) is connected with the sight glass bin assembly (6) in a penetrating mode, and the other end of the spiral feeding bin is fixedly connected with the driving motor assembly (4); the screw shaft (52) is arranged in the screw feeding bin (51), and the screw shaft (52) is tightly propped against the output end of the driving motor assembly (4) through the set screw (7).
3. A screw feeder for dry denitration according to claim 2, characterized in that: the screw shaft (52) comprises a screw part (521) and a shaft coupling part (522); the shaft coupling part (522) is provided with a shaft coupling hole (523) along the axis of the axial direction, and the shaft coupling part (522) is provided with a set screw hole (524) penetrating through the shaft coupling hole (523); the set screw (7) is in threaded connection with the set screw hole (524).
4. A screw feeder for dry denitration according to claim 3, wherein: the number of the set screw holes (524) is two, and the distance between the two set screw holes (524) is a preset standard distance.
5. A screw feeder for dry denitration according to claim 3, wherein: the set screw (7) is a flat head screw.
6. A screw feeder for dry denitration according to claim 1, characterized in that: the sight glass bin assembly (6) comprises a sight glass bin body (61), a pneumatic conveying pipe (62) and a sight glass end cover (63); the upper part of the sight glass bin body (61) is detachably connected with a sight glass end cover (63); a pneumatic conveying pipe (62) is arranged in the sight glass bin body (61) in a penetrating manner, and an air outlet of the pneumatic conveying pipe (62) is close to a discharge hole of the sight glass bin body (61); the feed inlet of the sight glass bin body (61) is communicated with the discharge outlet of the spiral feeding component (5).
7. The spiral feeding device for dry denitration according to claim 6, wherein: the sight glass end cover (63) is made of plexiglass.
8. A screw feeder for dry denitration according to claim 1, characterized in that: the automatic feeding device is characterized by further comprising a weighing assembly (3), wherein the upper part of the feeding hopper (2) is fixedly arranged on the mounting frame body (1) through the weighing assembly (3); the weighing assembly (3) is a weighing sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320514543.XU CN219482203U (en) | 2023-03-16 | 2023-03-16 | A spiral feeding device for dry process denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320514543.XU CN219482203U (en) | 2023-03-16 | 2023-03-16 | A spiral feeding device for dry process denitration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219482203U true CN219482203U (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320514543.XU Active CN219482203U (en) | 2023-03-16 | 2023-03-16 | A spiral feeding device for dry process denitration |
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| Country | Link |
|---|---|
| CN (1) | CN219482203U (en) |
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2023
- 2023-03-16 CN CN202320514543.XU patent/CN219482203U/en active Active
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