CN211133311U - Double-constant-pressure multi-station pulse type cloth bag dust removing equipment - Google Patents
Double-constant-pressure multi-station pulse type cloth bag dust removing equipment Download PDFInfo
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- CN211133311U CN211133311U CN201922032313.6U CN201922032313U CN211133311U CN 211133311 U CN211133311 U CN 211133311U CN 201922032313 U CN201922032313 U CN 201922032313U CN 211133311 U CN211133311 U CN 211133311U
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Abstract
The utility model discloses a two constant voltage multistation pulsed sack dust collecting equipment, including draught fan, discharge line, pulse sack dust collector and dirt trunk line, be provided with wind speed measurement device at the end of dirt trunk line, wind speed measurement device includes wind speed sensor and measures the barrel, is equipped with pressure difference sensor in dust collecting equipment. The utility model discloses a dust collecting equipment can realize that pressure loss is invariable, dust removal pipeline internal pressure is invariable, dust cage wind speed is stable in the pressure loss is invariable in the pulse sack dust collector through reasonable design and parametric control, is favorable to the high-efficient collection purification treatment of dust waste gas, and is energy-concerving and environment-protective, and air velocity transducer and draught fan linkage work, pressure difference sensor and pulse sack dust collector linkage work to reach the purpose that collection dirt effect is best, dust collection efficiency is highest, the operation energy consumption is minimum.
Description
Technical Field
The utility model relates to a large-scale, multistation discharge dust waste gas recovery administers technical field, specifically says so one kind through rationally setting up pressure difference sensor and air velocity transducer on pulsed sack dust collector and dirt pipeline.
Background
Large-scale stone material factories and furniture factories are main industries polluted by dust and waste gas, and have the characteristics of large dust emission amount and multiple emission stations, for example, crushing and screening stations of the stone material factories and working procedures of precision saws, edge banding machines, milling machines, transfer machines and the like of the furniture factories are important control points of dust emission. Aiming at the recovery and treatment technology of the multi-station discharged dust and waste gas, a gas collecting hood or a gas collecting opening is mainly arranged at the discharge position, the waste gas is introduced into a bag-type dust remover through a pipeline under the negative pressure action of a draught fan, and the waste gas is discharged after being filtered and dedusted.
For the dust treatment system with large discharge capacity and multiple stations, due to the complexity of dust discharge time intervals and discharge concentration of each station, the common gas collection system and the treatment system cannot meet the wind collection speed and the pipeline pressure of each gas collection port, so that the long-term, efficient and economic treatment effect cannot be achieved.
The existing dust treatment system with large discharge capacity and multiple stations mainly has the following technical problems:
1. the stations are multiple, the dust emission concentration and air collection quantity requirements of each station are different, and the arrangement requirements of the branch pipeline and the air collection port of each station are strict and difficult to arrange.
2. The working time intervals of all stations are different, sometimes the stations run at full load, sometimes the stations run at low load, and when all the stations run at low load, namely the dust emission concentration is low, the dust remover can not adjust the running load in time, so that the energy waste is caused.
3. The dust emission concentration and the air collection quantity requirement of each station are different, so the air collection speed of each air collection port is different, namely the pipeline pressure of each air collection port is different. Because the stations are multiple and the complexity of each station causes the uneven distribution of the air collecting speed and pressure of each air collecting port of the dust removal system, the air speed and pressure of some air collecting ports are larger, the air speed and pressure of some air collecting ports are smaller and even lower than the minimum air collecting speed and pressure, and the dust removal efficiency is greatly reduced.
4. The pulse time of the common pulse bag-type dust collector is fixed, the common pulse bag-type dust collector has periodicity and poor strain capacity, and has certain limitation when being used under the working condition that the dust discharge concentration and the speed change are large.
SUMMERY OF THE UTILITY MODEL
To the problem among the prior art, the utility model provides a two constant voltage multistation pulsed sack dust collecting equipment.
In order to achieve the purpose, the utility model discloses a following technical scheme realizes:
a double-constant-pressure multi-station pulse type cloth bag dust removing device comprises an induced draft fan, a discharge pipeline, a pulse cloth bag dust removing device and a dust collecting main pipeline, wherein the induced draft fan is arranged on the discharge pipeline, the input end of the discharge pipeline is connected with the output end of the pulse cloth bag dust removing device, the input end of the pulse cloth bag dust removing device is connected with the output end of the dust collecting main pipeline, a plurality of dust collecting branch pipelines distributed at intervals are connected to the bottom of the dust collecting main pipeline in the length direction, a dust collecting cover is arranged at the bottom end of each dust collecting branch pipeline, the induced draft fan comprises a wind speed frequency converter, and;
the wind speed measuring device is arranged at the tail end of the main dust collecting pipeline and comprises a wind speed sensor and a measuring cylinder body, the measuring cylinder body is communicated with the main dust collecting pipeline, a dust separation cover is sleeved at the outer end of the measuring cylinder body in a matched mode, a first filter screen is arranged in the dust separation cover in an isolated mode, the wind speed sensor is arranged at the top of the measuring cylinder body and is electrically connected and linked with a wind speed transducer, the wind speed sensor comprises a wind sensing probe, and the wind sensing probe is inserted into the measuring cylinder body; be equipped with pressure difference sensor among the dust collecting equipment, pressure difference sensor includes the sensor body, is connected to near two pressure probes and the casing of pulse sack dust collector input and output respectively, and the pressure probe is located the casing, and the casing is located on collection dirt trunk line and the discharge line to with collection dirt trunk line and discharge line intercommunication, be equipped with the second filter screen at the casing mesophragma, the pressure probe is inserted and is established between second filter screen and casing blind end, pulse valve and sensor body electric connection and linkage.
Furthermore, the surface of the outer end of the measuring cylinder body is provided with an external thread, the inner surface of the dust hood is provided with an internal thread which is matched and connected with the external thread, and the dust hood is in threaded connection with the measuring cylinder body.
Furthermore, one end of the measuring cylinder is fixedly connected with the tail end of the main dust collecting pipeline through a first bolt; the wind speed sensor is fixedly connected to the tail end of the main dust collecting pipeline through a second bolt; the sensor body is fixedly connected to the side part of the pulse bag type dust removal device through a third bolt; the shell is fixedly connected to the main dust collecting pipe or the discharge pipe through a fourth bolt.
Furthermore, a slot is formed in the side portion of the shell, the second filter screen is inserted into the slot in a matched mode, and the second filter screen comprises a frame which is in abutting connection with the slot in the periphery.
Furthermore, a pneumatic valve is arranged on the dust collecting branch pipeline.
The utility model discloses following beneficial effect has: the utility model discloses a dust collecting equipment can realize through reasonable design and parametric control that pressure loss is invariable, dust removal pipeline internal pressure is invariable, dust cage wind speed is stable in the pressure loss is invariable in the pulse sack dust collector, is favorable to the high-efficient collection purification treatment of dust waste gas, and is energy-concerving and environment-protective, wherein, air velocity transducer and wind speed converter linkage work, pressure difference sensor and pulse valve linkage work to reach the purpose that collection dirt effect is best, dust collection efficiency is highest, the operation energy consumption is minimum, it is concrete:
1. the wind speed sensor is arranged at the tail end of the pipeline instead of the pressure difference sensor, so that the influence of inconstant vortex appearing pressure in the circular spiral pipeline is reasonably avoided, and the control is more accurate;
2. the common wind speed sensor is strict in use environment, is used in an environment with large dust content, not only influences the accuracy of the wind speed sensor, but also reduces the service life of the wind speed sensor, and the design of the wind speed measuring device can improve the use environment of the wind speed sensor, greatly improves the accuracy of wind speed measurement and prolongs the service life of the wind speed sensor;
3. if the tail end of the main dust collecting pipe meets the minimum dust collecting wind speed (namely an initial constant value), the wind speed of each dust collecting cover at the front end is greater than the minimum dust collecting wind speed, so that the waste gas can be effectively collected;
4. the pulse valve in the pulse bag dust collector is controlled by pressure difference to carry out ash removal, and the ash removal is more effective and stronger in strain capacity for dust removal system equipment with large change of discharge concentration and discharge rate, so that the dust collector can be in a high-efficiency filtering operation state for a long time;
5. if directly set up pressure difference sensor on collection dirt trunk line, then the vortex in the collection dirt trunk line influences pressure difference sensor's measured value with the large granule dust great, and through setting up casing and second filter screen, has stabilized the pressure of surveying firstly, has secondly filtered the dust in the waste gas, has improved pressure measurement's accuracy and its life equally greatly.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the apparatus of the present invention;
FIG. 2 is an enlarged view of a portion of the wind speed measurement device of FIG. 1;
FIG. 3 is a side view schematic of the structure of FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 1 at A;
FIG. 5 is an enlarged view of a portion of the pressure differential sensor of FIG. 1;
labeled as: 1. an induced draft fan; 2. a discharge conduit; 3. a pulse bag dust collector; 4. a main dust collecting pipe; 5. a dust collecting branch pipe; 6. a wind speed measuring device; 601. measuring the cylinder; 602. a first bolt; 603. a dust shield; 604. a first filter screen; 605. a wind speed sensor; 606. a second bolt; 607. a wind sensing probe; 7. a pressure difference sensor; 701. a sensor body; 702. a pressure sensing probe; 703. a housing; 704. a third bolt; 705. a slot; 706. a frame; 707. a fourth bolt; 8. a pneumatic valve; 9. a dust collection cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or circuit connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
A double constant pressure multi-station pulse type cloth bag dust removing device is shown in figure 1, and the general structure is as follows:
including draught fan 1, exhaust pipe 2, pulse sack dust collector 3 and collection dirt trunk line 4, wherein, above-mentioned draught fan 1 is installed on exhaust pipe 2, exhaust pipe 2's input is connected with pulse sack dust collector 3's output, pulse sack dust collector 3's input is connected with collection dirt trunk line 4's output, be connected with a plurality of interval distribution's collection dirt small transfer line 5 in the bottom along 4 pipe length directions of collection dirt trunk line, dust cage 9 is all installed to collection dirt small transfer line 5 bottom, the quantity of collection dirt small transfer line 5 and dust cage 9 is related to the station quantity that actually exists.
Referring to fig. 2 and 3, an air speed measuring device 6 is disposed at the end of the main dust collecting pipe 4, the air speed measuring device 6 includes an air speed sensor 605 and a measuring cylinder 601, one end of the measuring cylinder 601 is fixedly connected to the end of the main dust collecting pipe 4 through a first bolt 602, the measuring cylinder 601 is communicated with the main dust collecting pipe 4, a dust-separating cover 603 is fittingly sleeved at the other end of the measuring cylinder 601, and the dust-separating cover 603 includes a first filter screen 604 corresponding to an opening at the outer end of the measuring cylinder 601; furthermore, in order to facilitate the fixing and installation of the dust-proof cover 603, an external thread (not shown) is provided on the surface of the outer end cylinder of the measuring cylinder 601, an internal thread (not shown) matched and connected with the external thread is provided on the inner surface of the dust-proof cover 603, and the dust-proof cover 603 and the measuring cylinder 601 are fixedly connected through the structural thread.
The induced draft fan 1 comprises a wind speed frequency converter (not shown), the wind speed sensor 605 is arranged at the top of the measuring cylinder 601 and is electrically connected with the wind speed frequency converter, the wind speed sensor 605 is fixedly connected to the tail end of the main dust collecting pipe 4 through a second bolt 606, the wind speed sensor 605 comprises a wind sensing probe 607, the wind sensing probe 607 is inserted into the measuring cylinder 601 and is further positioned on the wind direction side of the first filter screen 604.
As shown in fig. 4 and 5, a pressure difference sensor 7 is disposed in the dust removing apparatus, the pressure difference sensor 7 includes a sensor body 701, two pressure probes 702 and a housing 703 that are respectively connected to the vicinity of the input end and the output end of the pulse bag dust removing device 3, the sensor body 701 is fixedly connected to the side portion of the pulse bag dust removing device 3 through a third bolt 704, the pressure probes 702 are located in the housing 703, the housing 703 is fixedly connected to the dust collecting main pipe 4 and the discharge pipe 2 through a fourth bolt 707, and is communicated with the dust collecting main pipe 4 and the discharge pipe 2, a slot 705 is disposed on the side portion of the housing 703, a second filter screen is inserted into the slot 705, the second filter screen includes a frame 706 whose periphery is in abutting connection with the slot 705, and the pressure probes 702 are inserted between the second filter screen and the closed end of the housing 703.
The pulse bag dust collector 3 includes a pulse valve (not shown) electrically connected to the sensor body 701, and the pulse valve is linked to the sensor body 701.
Based on the foregoing, each dust collecting branch pipe 5 is provided with a pneumatic valve 8, and the pneumatic valves 8 are used for controlling the dust hood 9 to open or close the dust absorption work generated at the lower station.
The utility model discloses a dust collecting equipment theory of operation and flow as follows:
(1) under the action of the draught fan 1, negative pressure is generated below each gas-collecting hood, dust-containing waste gas discharged from the workbench is collected, introduced into the pulse bag dust collector 3 through a pipeline, filtered, enters the discharge pipeline 2 and the draught fan 1, and then conveyed to the high altitude of 15m for discharge;
(2) the wind speed measuring device 6 arranged at the tail end of the main dust collecting pipeline 4 is used for communicating the main dust collecting pipeline 4 with the outside air, and the dust isolating cover 603 is used for isolating and filtering the outside dust, so that the interference influence of the dust on the probe of the wind speed sensor 605 is avoided, the service life of the wind speed sensor is prolonged, and meanwhile, the filter screen also has the wind equalizing function, and the wind speed measuring accuracy is improved; when the pressure in the main pipeline is constant, the wind speed in the measuring cylinder 601 is constant, and when the pressure in the main dust collecting pipeline 4 is changed, the wind speed in the measuring cylinder 601 is also changed;
(3) the wind speed sensor 605 is linked with a wind speed frequency converter of the induced draft fan 1 and is used for adjusting and controlling the frequency of the induced draft fan 1;
(4) the pressure difference sensor 7 is arranged in the device, wherein one end of the shell 703 is communicated with the main dust collecting pipeline 4 or the discharge pipeline 2, the other end of the shell is closed, and the second filter screen is arranged for isolating and filtering dust in the main dust collecting pipeline 4 or the discharge pipeline 2, so that the interference influence of the dust on the pressure-sensitive probe 702 is avoided, and the service life of the pressure-sensitive probe is prolonged; meanwhile, the second filter screen also has a pressure stabilizing effect, so that the influence of the eddy in each pipeline on the pressure in the shell 703 is avoided, and the accuracy of pressure measurement is improved; the pressure value in the shell 703 is consistent with the pressure value in each communicated pipeline;
(5) the pressure difference sensor 7 is linked with a pulse valve of the pulse bag dust collector 3 and is used for controlling the pulse valve to blow and clean ash;
(6) the pneumatic valve 8 is arranged on the dust collecting branch pipe 5, when the workbench works normally, the pneumatic valve 8 is opened, and the dust collecting cover 9 starts to collect dust; when the workbench below the dust hood 9 does not work, the pneumatic valve 8 is closed, and the gas collection port stops working;
(7) when the induced draft fan 1 operates at a certain frequency, the wind speed, the wind pressure and the wind speed at the tail end in the dust hood 9 are constant (at the moment, the wind speed value is an initial constant value); when the working number of the working tables is increased, the pneumatic valves 8 are opened more, the dust collection amount is increased, the pressure in the main dust collection pipeline 4 is reduced, and the tail end wind speed is reduced; when the working number of the working tables is reduced, the pneumatic valve 8 is opened and reduced, the dust collection amount is reduced, the pressure in the main dust collecting pipeline 4 is increased, and the tail end wind speed is increased;
(8) when the pulse bag type dust removal device 3 works initially, the data of the pressure difference sensor 7 is initial pressure drop which is marked as a, and the highest pressure drop is a +200Pa which is marked as b; keeping the pressure difference between a and b, and is the best state of the dust removal and filtration effect; when the dust in the pulse bag dust collector 3 is accumulated more, the air permeability of a bag in the device is reduced, the pressure difference data begins to increase, when the dust is increased to b, the pulse valve is opened, the back flushing ash removal is started, the air permeability of the bag after the ash removal is improved, and the pressure difference data is restored;
(9) the wind speed sensor 605 and the wind speed frequency converter work in a linkage way, and the pressure difference sensor 7 and the pulse valve work in a linkage way, so that the aims of optimal dust collection effect, highest dust removal efficiency and lowest operation energy consumption are fulfilled.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a two constant voltage multistation pulsed sack dust collecting equipment, includes draught fan, exhaust pipe, pulse sack dust collector and dirt trunk line, on the exhaust pipe was located to the draught fan, exhaust pipe's input and pulse sack dust collector's output were connected, and pulse sack dust collector's input and the output of collection dirt trunk line are connected, are connected with a plurality of interval distribution's a collection dirt small pipe way in the bottom along collection dirt trunk line pipe length direction, and collection dirt small pipe way bottom is equipped with the dust cage, the draught fan includes the wind speed converter, and pulse sack dust collector includes pulse valve, its characterized in that:
the wind speed measuring device is arranged at the tail end of the main dust collecting pipeline and comprises a wind speed sensor and a measuring cylinder body, the measuring cylinder body is communicated with the main dust collecting pipeline, a dust separation cover is sleeved at the outer end of the measuring cylinder body in a matched mode, a first filter screen is arranged in the dust separation cover in an isolated mode, the wind speed sensor is arranged at the top of the measuring cylinder body and is electrically connected and linked with a wind speed transducer, the wind speed sensor comprises a wind sensing probe, and the wind sensing probe is inserted into the measuring cylinder body; be equipped with pressure difference sensor among the dust collecting equipment, pressure difference sensor includes the sensor body, is connected to near two pressure probes and the casing of pulse sack dust collector input and output respectively, and the pressure probe is located the casing, and the casing is located on collection dirt trunk line and the discharge line to with collection dirt trunk line and discharge line intercommunication, be equipped with the second filter screen at the casing mesophragma, the pressure probe is inserted and is established between second filter screen and casing blind end, pulse valve and sensor body electric connection and linkage.
2. The dual constant-pressure multi-station pulse type cloth bag dust removing device as claimed in claim 1, wherein the outer end of the measuring cylinder is provided with an external thread on the surface of the cylinder, the inner surface of the dust hood is provided with an internal thread which is matched and connected with the external thread, and the dust hood is in threaded connection with the measuring cylinder.
3. The double constant-pressure multi-station pulse type cloth bag dust removing equipment as claimed in claim 1, wherein one end of the measuring cylinder is fixedly connected with the tail end of the main dust collecting pipeline through a first bolt; the wind speed sensor is fixedly connected to the tail end of the main dust collecting pipeline through a second bolt; the sensor body is fixedly connected to the side part of the pulse bag type dust removal device through a third bolt; the shell is fixedly connected to the main dust collecting pipe or the discharge pipe through a fourth bolt.
4. The double constant-pressure multi-station pulse type cloth bag dust removing device as claimed in claim 1, wherein a slot is formed in a side portion of the housing, the second filter screen is fittingly inserted into the slot, and the second filter screen comprises a frame whose periphery abuts against the slot.
5. A double constant pressure multi-station pulse type cloth bag dust removing device according to claim 1, wherein a pneumatic valve is arranged on the dust collecting branch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922032313.6U CN211133311U (en) | 2019-11-22 | 2019-11-22 | Double-constant-pressure multi-station pulse type cloth bag dust removing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922032313.6U CN211133311U (en) | 2019-11-22 | 2019-11-22 | Double-constant-pressure multi-station pulse type cloth bag dust removing equipment |
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| CN211133311U true CN211133311U (en) | 2020-07-31 |
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| CN201922032313.6U Active CN211133311U (en) | 2019-11-22 | 2019-11-22 | Double-constant-pressure multi-station pulse type cloth bag dust removing equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495076A (en) * | 2020-12-10 | 2021-03-16 | 广东长信精密设备有限公司 | Powder product collecting equipment and air speed control method thereof |
| CN112807876A (en) * | 2020-12-30 | 2021-05-18 | 宁夏海盛实业有限公司 | Ferrosilicon stove fire outlet flue gas dust pelletizing system |
-
2019
- 2019-11-22 CN CN201922032313.6U patent/CN211133311U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495076A (en) * | 2020-12-10 | 2021-03-16 | 广东长信精密设备有限公司 | Powder product collecting equipment and air speed control method thereof |
| CN112495076B (en) * | 2020-12-10 | 2022-06-17 | 江苏先导微电子科技有限公司 | Powder product collecting equipment and air speed control method thereof |
| CN112807876A (en) * | 2020-12-30 | 2021-05-18 | 宁夏海盛实业有限公司 | Ferrosilicon stove fire outlet flue gas dust pelletizing system |
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