CN213942451U - Bag type dust collector and blowing device thereof - Google Patents
Bag type dust collector and blowing device thereof Download PDFInfo
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- CN213942451U CN213942451U CN202022601454.8U CN202022601454U CN213942451U CN 213942451 U CN213942451 U CN 213942451U CN 202022601454 U CN202022601454 U CN 202022601454U CN 213942451 U CN213942451 U CN 213942451U
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Abstract
The utility model discloses a bag type dust collector and a blowing device thereof, the blowing device comprises an air bag and a blowing pipe, the air bag is arranged outside the shell of the bag type dust collector, a heater is arranged on an air pipeline connected with the air bag, the air bag is connected with the blowing pipe so as to spray blowing air into the blowing pipe, and the blowing pipe is positioned inside the shell; the heat exchange component is arranged in the shell and used for carrying out heat exchange between the smoke in the shell and the sweeping air entering the shell. This jetting device is through setting up heat transfer structure in that the dust remover is inside, utilizes the heat of flue gas in the dust remover to rise temperature to jetting gas, can reduce the intensification requirement of external heater block, has effectively reduced the heating energy consumption, and energy-conserving effectual and economic nature is high.
Description
Technical Field
The utility model relates to a bag collector technical field especially relates to a bag collector and jetting device thereof.
Background
The bag type dust collector used in the lead and zinc smelting process is mostly in a high-temperature working condition, namely a working condition with the temperature of more than 250 ℃, the content of oxysulfide in flue gas is high, the acid dew point of the flue gas is also high, and if acid dew is formed in the dust collector, internal equipment can be corroded, and the normal operation of the equipment is influenced.
The blowing devices in the bag type dust collector are provided with external heating parts for heating compressed air for blowing so as to prevent low-temperature gas from being sprayed into the dust collector and reduce local temperature to cause internal acid condensation.
However, the working temperature of the bag type dust collector is usually 320-350 ℃, the acid dew point is 200-220 ℃, the external heating component can avoid forming acid dew by heating the injected compressed air to a temperature higher than the acid dew point by 20 ℃, and the corrosion to structures such as an alloy filter bag in the dust collector can be avoided.
Therefore, how to improve the blowing device of the bag-type dust collector and reduce the temperature rise requirement of the external heating component for blowing gas is a technical problem to be solved by the technical personnel in the field at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bag collector and jetting device thereof, this jetting device utilize the heat of flue gas to gaseous the heaies up of jetting in the dust remover through at the inside heat transfer structure that sets up of dust remover, can reduce the intensification requirement of external heater block, have effectively reduced the heating energy consumption, and energy-conserving effectual and economic nature is high.
In order to solve the technical problem, the utility model provides a jetting device of bag collector, including gas bag and jetting pipe, the gas bag is located the casing outside of bag collector, is equipped with the heater on the air pipeline that is connected with the gas bag, the gas bag with the jetting pipe is connected, in order to spout into to the jetting pipe and sweep the air, the jetting pipe is located inside the casing; the heat exchange component is arranged in the shell and used for carrying out heat exchange between the smoke in the shell and the sweeping air entering the shell.
The utility model provides a jetting device is used for the bag collector that has the high temperature operating mode, this jetting device has add heat transfer part in the casing of bag collector, this heat transfer part can utilize the higher flue gas of casing inside temperature to carry out the heat transfer with the sweep air that the jetting pipe provided, concretely, outside sweep air is heated by external heater before getting into the gas bag earlier, later the gas bag sprays the heated sweep air into the jetting pipe, the sweep air that provides through the jetting pipe carries out the heat transfer with built-in heat transfer part again, because the flue gas temperature of bag collector is far above the acid dew point, can promote the temperature of sweep air to the temperature that is above the acid dew point after the heat transfer, the condition of acid dewfall has been avoided, because of the setting of heat transfer part, compared with the prior art, the heating demand to external heater reduces, can effectively practice thrift external heater's energy consumption, the cost is reduced, and simultaneously, because of the heat transfer part sets up in having the casing, need not extra occupation space, the economic nature is more excellent.
According to the blowing device of the bag type dust collector, the heat exchange part comprises a first heat exchanger made of metal, and the first heat exchanger is arranged between the air bag and the blowing pipe.
According to the blowing device of the bag type dust collector, the first heat exchanger comprises a first heat exchange tube and a first fin structure arranged in the first heat exchange tube, the inlet end of the first heat exchange tube is connected with the air bag, and the outlet end of the first heat exchange tube is connected with the inlet end of the blowing tube.
According to the blowing device of the bag type dust collector, the first fin structure comprises a plurality of first fins in plate-shaped structures, the length direction of each first fin is parallel to the length direction of the first heat exchange tube, the width direction of each first fin is parallel to the radial direction of the first heat exchange tube, and the first fins are arranged at intervals along the circumferential direction of the first heat exchange tube.
According to the blowing device of the bag type dust collector, the first fin structure comprises at least one finned tube with a tubular structure, the finned tube is sleeved in the first heat exchange tube, and an annular circulation channel for blowing air is formed between the finned tube and the first heat exchange tube.
According to the blowing device of the bag type dust collector, the heat exchange part further comprises a second heat exchanger, the second heat exchanger comprises a plurality of heat exchange elements made of metal materials, and the heat exchange elements are arranged between the pattern plate and the filter bag of the bag type dust collector.
According to the blowing device of the bag type dust collector, the heat exchange element comprises a second heat exchange tube and a second fin structure arranged in the second heat exchange tube, the inlet end of the second heat exchange tube is connected with the pattern plate, and the outlet end of the second heat exchange tube is connected with the filter bag.
The blowing device of the bag type dust collector comprises a first fin structure and a second fin structure, wherein the first fin structure comprises a plurality of first fins which are in plate structures, the first fins are arranged at intervals along the circumferential direction of a first heat exchange tube, the first fins are obliquely arranged relative to the axis of the first heat exchange tube, and the oblique directions of the first fins are consistent.
In the blowing device of the bag-type dust collector, the inclination angles of the second fins relative to the axes of the second heat exchange tubes are the same.
The utility model also provides a bag collector, including casing and jetting device, the jetting device be above-mentioned arbitrary one the jetting device.
Since the blowing device has the technical effects, the bag-type dust collector comprising the blowing device also has the same technical effects, and the technical effects are not discussed here.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a blowing device of a bag-type dust collector provided by the present invention;
FIG. 2 is a schematic cross-sectional view of a first heat exchanger in an exemplary embodiment;
FIG. 3 is a schematic cross-sectional view of a first heat exchanger in another embodiment;
FIG. 4 is a schematic cross-sectional view of a heat exchange element according to an embodiment;
fig. 5 illustrates the relative positions of a single second fin and a second heat exchange tube.
Description of reference numerals:
the filter bag comprises a shell 11, a filter bag 12, a pattern plate 13 and an air purifying chamber 14;
an air pipeline 21, a heater 22, an air bag 23 and an injection pipe 24;
a first heat exchanger 30, a first heat exchange tube 31, a first fin 32, a finned tube 33;
a second heat exchanger 40, a heat exchange element 41, a second heat exchange tube 411 and a second fin 412.
Detailed Description
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.
For the sake of understanding and simplicity of description, the following description is made in conjunction with a bag collector and its blowing device, and the advantageous effects will not be repeated.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a blowing device of a bag-type dust collector provided by the present invention.
The bag type dust collector provided by the invention is mainly applied to smelting processes of lead, zinc and the like, and the working temperature of the bag type dust collector is high and is usually higher than 250 ℃. Of course, the bag house and the blowing device provided herein are equally applicable to other applications where the same needs apply. The bag type dust collector can be a bag type dust collector or an electric bag composite dust collector.
In this embodiment, the bag filter includes a housing 11, a pattern plate 13 is disposed inside the housing 11, and a plurality of filter bags 12 are connected below the pattern plate 13.
The blowing device of the bag type dust collector comprises an air bag 23 and a blowing pipe 24, the blowing pipe 24 is arranged in the air purifying chamber 14 of the shell 11, the air bag 23 is connected with an air source and used for blowing air into the blowing pipe 24, and the blowing pipe 24 blows the blowing air to each filter bag 12 so as to perform dust cleaning treatment on the filter bags 12.
Wherein, a heater 22 is arranged on the air pipeline 21 connected with the air bag 23 to heat the purging air entering the air bag 23.
In this embodiment, the blowing device of the bag-type dust collector further comprises a heat exchange component arranged inside the housing 11, and the heat exchange component is used for exchanging heat with the purging air provided by the blowing pipe 24 by using the flue gas in the housing 11.
As above, in practical application, before the outside sweep air enters the air bag 23, the outside heater 22 is heated first, then the air bag sprays the sweep air heated by 23 into the injection pipe 24, the sweep air entering the casing 11 through the air bag 23 exchanges heat with the built-in heat exchange component, because the flue gas temperature of the bag type dust collector is far higher than the acid dew point, the temperature of the sweep air can be raised to a temperature higher than the acid dew point after heat exchange, the acid dewing is avoided, because of the arrangement of the heat exchange component, compared with the existing scheme of only arranging the external heating process, the heating requirement of the external heater 22 is reduced by the scheme, the energy consumption of the external heater 22 can be effectively saved, the cost is reduced, meanwhile, because the heat exchange component is arranged in the existing casing 11, no additional space occupation is needed, and the economy is better.
In a specific scheme, the heat exchange component comprises a first heat exchanger 30 made of a metal material, and the first heat exchanger 30 is specifically arranged between the air bag 23 and the injection pipe 24, that is, purge gas ejected from the air bag 23 enters the first heat exchanger first to be heated and then is blown to each filter bag 12 through the injection pipe 24.
The first heat exchanger 30 is made of a metal material, and can reach the same temperature as the flue gas under the action of the high-temperature flue gas in the shell 11, so that the heat exchange effect with the purging gas is better, that is, the temperature rise of the purging gas can be improved.
Referring to fig. 2, fig. 2 is a schematic cross-sectional view of a first heat exchanger according to an embodiment.
In this specific embodiment, the first heat exchanger 30 includes a first heat exchange tube 31 and a first fin structure disposed in the first heat exchange tube 31, an inlet end of the first heat exchange tube 30 is connected to the air bag 23, and an outlet end of the first heat exchange tube is connected to an inlet end of the blowing tube 24.
The setting of first fin structure can increase the gaseous area of contact with first heat exchanger 30 when passing through of sweeping, effectively improves heat exchange efficiency between them, makes the gaseous temperature that can further promote after passing through the heat transfer of sweeping to further reduce the energy consumption demand to external heater 22.
The first heat exchange tube 31 is a circular tube, the first fin structure includes a plurality of first fins 32 in a plate-shaped structure, a length direction of the first fins 32 is parallel to a length direction of the first heat exchange tube 31, a width direction of the first fins 32 is parallel to a radial direction of the first heat exchange tube 31, and the plurality of first fins 32 are arranged at intervals along a circumferential direction of the first heat exchange tube 31 to form a flow channel for passing the purge gas between two adjacent first fins 32.
Specifically, the plurality of first fins 32 are preferably uniformly distributed along the circumferential direction of the first heat exchange pipe 31 to make the heat exchange of the purge gas uniform.
In the illustrated embodiment, the first fin 32 does not extend to the position of the center line of the first heat exchange tube 31, and in actual installation, a plurality of first fins 32 may meet at the position of the center line of the first heat exchange tube 31.
In the illustrated embodiment, the plurality of first fins 32 have the same width, and may be provided differently when actually provided.
The first fins 32 may have other configurations than the plate-like configuration described above, as long as the contact area between the passing purge gas and the first heat exchanger 30 can be increased.
Referring to fig. 3, fig. 3 is a schematic cross-sectional view of a first heat exchanger in another embodiment.
In this specific embodiment, the first fin structure of the first heat exchanger 30 includes a finned tube 33 having a tubular structure, the finned tube 33 is sleeved in the first heat exchange tube 31, and an annular circulation channel for purging air is formed between the finned tube 33 and the first heat exchange tube 31, obviously, the diameter of the finned tube 33 is smaller than the diameter of the first heat exchange tube 31, and the finned tube 33 can be understood as an annular fin, and this form can also increase the heat exchange area of the purge gas.
In the illustrated embodiment, one finned tube 33 is exemplarily shown, and it is understood that, in practice, more than two finned tubes 33 may be provided, and obviously, the tube diameters of the finned tubes 33 are different to form a circulation passage of the purge gas between two adjacent finned tubes 33.
In this embodiment, the heat exchange component further includes a second heat exchanger 40, the second heat exchanger 40 includes a plurality of heat exchange elements 41 made of metal, and the heat exchange elements 41 are disposed between the card 13 and the filter bag 12 of the bag-type dust collector. That is, the purge gas blown to the corresponding filter bag 12 through each blowing port of the blowing pipe 24 is also blown to the filter bag 12 after being subjected to heat exchange and temperature rise by the heat exchange element 41 at the corresponding position.
After the arrangement, the temperature of the purge gas is increased three times, namely, the purge gas is heated once outside the shell 11, and the purge gas is heated twice by using the high-temperature flue gas in the shell 11, so that the temperature of the purge gas is further increased, and the energy consumption requirement on the external heater 22 is further reduced.
The heat exchange element 41 of metal material is also capable of maintaining a substantially uniform temperature with the flue gas in the housing 11.
In a specific scheme, the heat exchange element 41 comprises a second heat exchange tube 411 and a second fin structure arranged in the second heat exchange tube 411, an inlet end of the second heat exchange tube 411 is connected with the card 13, and an outlet end of the second heat exchange tube is connected with the filter bag 12.
In practice, the second fin structure of the heat exchange element 41 may be similar to that of the first heat exchanger 30 described above.
Of course, other forms are possible, as described in more detail below.
Referring to fig. 4 and 5 together, fig. 4 is a schematic cross-sectional view of a heat exchange element in an embodiment; fig. 5 illustrates the relative positions of a single second fin and a second heat exchange tube.
In this specific scheme, the second fin structure includes a plurality of second fins 412 that are plate-like structures, and a plurality of second fins 412 are arranged along the circumference interval of second heat exchange tube 411, and second fins 412 set up in an inclined manner with respect to the axis of second heat exchange tube 411, and the inclination direction of each second fin 412 is unanimous.
After the arrangement, the purging gas sprayed into the heat exchange element 41 can rotate under the guiding action of the second fins 412, and the pressure of the purging gas on the filter bag 12 can be increased and the throughput can be increased under the action of centrifugal force, so that the ash removal effect is enhanced.
In a specific arrangement, the inclination angles of the second fins 412 relative to the axis of the second heat exchange tube 411 are the same, so as to ensure the swirling effect.
It should be noted that, in actual installation, the inclination angle of the second fin 412 should not be set too large, which would increase pressure loss, and may be set as required in specific applications.
It should be noted that, in the operation process of the bag-type dust collector, the blowing ash removal of the blowing device is periodic, and not always working, after one blowing ash removal, the first heat exchanger 30 and each heat exchange element 41 have a period of time to exchange heat with the high-temperature flue gas in the housing 11, so as to re-heat up to a temperature approximately equal to the temperature of the flue gas, so as to heat exchange temperature rise of the purge gas during the next blowing ash removal, and the problem that the temperature of the heat exchange element is low and fails does not occur.
It is right above that the utility model provides a bag collector and jetting device thereof introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The blowing device of the bag type dust collector comprises an air bag and a blowing pipe, wherein the air bag is arranged outside a shell of the bag type dust collector, a heater is arranged on an air pipeline connected with the air bag, the air bag is connected with the blowing pipe so as to spray blowing air into the blowing pipe, and the blowing pipe is positioned inside the shell; the device is characterized by further comprising a heat exchange component arranged inside the shell, wherein the heat exchange component is used for carrying out heat exchange between the smoke in the shell and the sweeping air entering the shell.
2. The blowing device of a bag-type dust collector as claimed in claim 1, wherein said heat exchange member comprises a first heat exchanger made of a metal material, said first heat exchanger being provided between said air bag and said blowing tube.
3. The blowing device of a bag-type dust collector as claimed in claim 2, wherein said first heat exchanger comprises a first heat exchange tube and a first fin structure provided in said first heat exchange tube, and said first heat exchange tube has an inlet end connected to said air bag and an outlet end connected to an inlet end of said blowing tube.
4. The blowing device of a bag collector as claimed in claim 3, wherein the first fin structure comprises a plurality of first fins in a plate-like structure, a length direction of the first fins is parallel to a length direction of the first heat exchange tubes, a width direction of the first fins is parallel to a radial direction of the first heat exchange tubes, and the plurality of first fins are arranged at intervals in a circumferential direction of the first heat exchange tubes.
5. The blowing device of a bag-type dust collector as claimed in claim 3, wherein the first fin structure comprises at least one finned tube of tubular structure, the finned tube is sleeved inside the first heat exchange tube, and an annular circulation channel for sweeping air is formed between the finned tube and the first heat exchange tube.
6. The blowing device of a bag filter according to any one of claims 2 to 5, wherein the heat exchange unit further comprises a second heat exchanger, the second heat exchanger comprising a plurality of heat exchange elements made of a metal material, the heat exchange elements being provided between a pattern plate and a filter bag of the bag filter.
7. The blowing device of a bag-type dust collector as claimed in claim 6, wherein said heat exchange element comprises a second heat exchange tube and a second fin structure provided in said second heat exchange tube, said second heat exchange tube having an inlet end connected to said card and an outlet end connected to said filter bag.
8. The blowing device of a bag-type dust collector as claimed in claim 7, wherein said second fin structure comprises a plurality of second fins in a plate-like structure, a plurality of said second fins are arranged at intervals along the circumferential direction of said second heat exchange tube, said second fins are arranged obliquely with respect to the axis of said second heat exchange tube, and the inclination direction of each of said second fins is uniform.
9. The blowing device of a bag-type dust collector as claimed in claim 7, wherein each of said second fins is inclined at the same angle with respect to the axis of said second heat exchange tubes.
10. A bag house comprising a housing and a blowing device, wherein the blowing device is the blowing device of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022601454.8U CN213942451U (en) | 2020-11-11 | 2020-11-11 | Bag type dust collector and blowing device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022601454.8U CN213942451U (en) | 2020-11-11 | 2020-11-11 | Bag type dust collector and blowing device thereof |
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| Publication Number | Publication Date |
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| CN213942451U true CN213942451U (en) | 2021-08-13 |
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| CN202022601454.8U Active CN213942451U (en) | 2020-11-11 | 2020-11-11 | Bag type dust collector and blowing device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115006939A (en) * | 2022-06-20 | 2022-09-06 | 成都易态科技有限公司 | Electric heating blowing air bag and filter |
-
2020
- 2020-11-11 CN CN202022601454.8U patent/CN213942451U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115006939A (en) * | 2022-06-20 | 2022-09-06 | 成都易态科技有限公司 | Electric heating blowing air bag and filter |
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