CN113101758A - Supersonic blowing device for online self-cleaning of air filtering system - Google Patents
Supersonic blowing device for online self-cleaning of air filtering system Download PDFInfo
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- CN113101758A CN113101758A CN202110354637.0A CN202110354637A CN113101758A CN 113101758 A CN113101758 A CN 113101758A CN 202110354637 A CN202110354637 A CN 202110354637A CN 113101758 A CN113101758 A CN 113101758A
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- blowing
- drainage
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- cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
- B01D46/715—Using pressurized gas at supersonic velocities
Abstract
The utility model provides an online supersonic speed jetting device of usefulness of automatically cleaning of air filtration system, includes threaded connector body, jetting structure, the threaded connector body includes the unthreaded hole section of one end fixed connection on the jetting pipeline, and the other end of unthreaded hole section is connected with the screw thread section, is equipped with the glue injection hole on the lateral wall of screw thread section, the jetting structure is fixed with inside shuttle type body through connecting the rib piece in the runner casing, the runner casing includes the threaded connection section of being connected with the screw thread section, and the one end of threaded connection section is connected with the arc expansion section, and the one end of arc expansion section is connected with the drainage section, a plurality of drainage holes have been seted up along the circumferencial direction slope on the face of cylinder of drainage section, and the one end of drainage section. The device can effectively weaken the oscillation fluctuation that the high-speed jetting of pulse air current probably arouses, avoids the secondary raise dust problem that filter element arouses because of the jetting pressure fluctuation, reduces the jetting energy consumption simultaneously, guarantees filtration system pulse deashing effect and filter core performance.
Description
Technical Field
The invention relates to a supersonic blowing device for online self-cleaning of an air filtering system.
Background
Air is an indispensable resource in industrial production and social life, on one hand, the air is used as an important production material and widely applied to energy power generation (combustion), specific gas (such as nitrogen and oxygen) preparation, pneumatic working medium (compressed air) and the like, and the cleanliness of the air directly influences the service performance and the service life of gas equipment; on the other hand, air directly affects human health as a necessary environmental factor for human survival.
In recent years, under the guidance of the national green development concept, the air quality problem is more and more emphasized, and the air filtering equipment is widely applied to the field of industrial production. The construction and maintenance costs of air filtration equipment also represent a significant expense to industrial manufacturing facilities. As the core of the filtering device, the filtering resistance of the filtering element is gradually increased along with the continuous accumulation of the filtered impurities in the using process, and the filtering element needs to be replaced when reaching the rated resistance. Replacement of filter elements increases maintenance costs for the enterprise, and thus filter element life is an important performance indicator of concern for the enterprise.
The self-cleaning filtering equipment can effectively prolong the service life of the filtering element and reduce the maintenance cost, and is widely applied to the industrial field. The pulse-jet self-cleaning filter equipment adopts a compressed air reverse pulse ash removal principle, has a good ash removal effect, is provided with a cylindrical dense-pleat filter element (large filter area per unit volume, low operation resistance and long service life), and becomes mainstream equipment for industrial air purification.
The pulse blowing self-cleaning type filtering equipment is provided with a set of pulse back blowing ash removal system which mainly comprises an air bag, an electromagnetic pulse valve, a blowing pipe, a nozzle and a control system. When the resistance of the filter element rises to a certain value, the control system starts the electromagnetic pulse valve, compressed air with certain pressure in the air bag enters the injection pipe through the valve and is injected from the nozzle, the filter element is injected from inside to outside, and impurities such as dust and the like accumulated on the outer surface of the filter material fall off, so that the filter material is recycled. The nozzle is a key functional component for realizing effective injection of compressed air flow to the filter element, is used for controlling the speed, direction, strength and injection range of the back-blowing air flow and directly determines the injection and ash removal effects of the back-blowing ash removal system on the filter element.
At present, the widely used nozzle structure focuses more on the realization of supersonic jet, and lacks the targeted design for the problems of oscillation, kinetic energy loss and the like which may occur in the pulsed high-speed airflow.
Disclosure of Invention
The invention aims to provide a supersonic blowing device for online self-cleaning of an air filtering system, which solves the problem of oscillation fluctuation possibly caused by high-speed blowing of pulse airflow, avoids the problem of secondary dust raising of a filter element caused by blowing pressure fluctuation, and reduces blowing energy consumption.
The technical scheme adopted for achieving the purpose is that the supersonic blowing device for online self-cleaning of the air filtering system comprises a threaded connector body and a blowing structure body, wherein the threaded connector body comprises a smooth hole section, one end of the smooth hole section is fixedly connected to a blowing pipeline, the other end of the smooth hole section is connected with a threaded section, glue injection holes are formed in the side wall of the threaded section, the blowing structure body comprises a flow channel shell, an internal shuttle-shaped body is fixed in the flow channel shell through a connecting rib, the flow channel shell comprises a threaded connecting section connected with the threaded section, one end of the threaded connecting section is connected with an arc-shaped expansion section, one end of the arc-shaped expansion section is connected with a drainage section, a plurality of drainage holes are formed in the cylindrical surface of the drainage section in an inclined mode along the circumferential direction.
Furthermore, the unthreaded hole section and the blowing pipeline are fixed by inserting welding or external fitting welding.
Furthermore, the inside of the light hole section is connected with the thread section in a stepped structure, the end face of the connecting end of the light hole section and the blowing pipeline is in an arc structure, the light hole section and the blowing pipeline are fixed by welding, and the light hole section and the blowing hole in the blowing pipeline are concentrically connected during welding.
Further, the threaded connection section is connected with the threaded section through a thread pair structure, and the inner diameter of the threaded connection section is equal to that of the unthreaded hole section.
Furthermore, the inner shuttle-shaped body is fixed at the center of the flow channel in the flow channel shell through the connecting ribs, the inner shuttle-shaped body comprises a middle cylinder, one end of the middle cylinder, which is positioned at the threaded connection section, is provided with an upper cone, the other end of the middle cylinder is provided with a lower cone, the height of the upper cone is smaller than that of the lower cone, and the middle cylinder is connected with the inner wall of the flow channel shell through the connecting ribs; the connecting rib piece is of a rectangular thin sheet structure and is uniformly arranged along the circumferential direction, the upper windward side and the lower leeward side of the connecting rib piece are both of arc structures so as to reduce resistance to airflow, and the connecting rib piece uniformly separates a plurality of drainage holes of the drainage section.
Furthermore, the drainage hole is obliquely arranged on the cylindrical surface of the drainage section along the circumferential direction, and the central line of the drainage hole points to the inner central line of the flow passage shell and deviates to the downstream.
Furthermore, the flow channel shell, the connecting rib and the internal shuttle-shaped body in the blowing structure body are connected into an integral structure.
Advantageous effects
Compared with the prior art, the invention has the following advantages.
1. Through the functional structure of kinetic energy buffering, accelerated drainage and cone diversion, the supersonic speed injection is realized, the oscillation fluctuation of high-speed airflow can be effectively weakened, and the injection energy consumption is reduced;
2. the invention adopts a welding type screwed joint installation mode, is simple and convenient, is provided with the glue injection hole, and can effectively prevent loosening in the use process through glue injection fixation.
Drawings
The invention is further described in detail below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall construction of the present invention;
figure 3 is a front view of the structure of the blowing structure of the present invention;
FIG. 4 is a side sectional view of the structure of the blowing structure of the present invention;
FIG. 5 is a plan view showing the structure of the blowing structure of the present invention;
FIG. 6 is a schematic view of the threaded joint body of the present invention;
FIG. 7 is a cross-sectional view of the construction of the threaded joint body of the present invention;
fig. 8 is a diagram illustrating an exemplary application of the structure of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention is further described with reference to the following examples and the accompanying drawings.
An ultrasonic blowing device for online self-cleaning of an air filtering system comprises a threaded connector body 1 and a blowing structural body 2, as shown in fig. 1-8, the threaded connector body 1 comprises a smooth hole section 11 with one end fixedly connected to a blowing pipeline 3, the other end of the smooth hole section 11 is connected with a threaded section 12, glue injection holes 13 are formed in the side wall of the threaded section 12, the blowing structural body 2 comprises a flow channel shell 21, an internal shuttle-shaped body 23 is fixed in the flow channel shell 21 through a connecting rib 22, the flow channel shell 21 comprises a threaded connecting section 211 connected with the threaded section 12, one end of the threaded connecting section 211 is connected with an arc-shaped expansion section 212, one end of the arc-shaped expansion section 212 is connected with a flow guiding section 213, a plurality of flow guiding holes 215 are obliquely formed in the cylindrical surface of the flow guiding section 213 along the circumferential direction, and one end of the flow guiding.
The smooth hole section 11 and the blowing pipeline 3 are fixed by inserting welding or external fitting welding.
The unthreaded hole section 11 and the threaded section 12 are connected in an integral type internal stepped structure, the end face of the connecting end of the unthreaded hole section 11 and the blowing pipeline 3 is in an arc structure, the unthreaded hole section 11 and the blowing pipeline 3 are fixed by welding, and the unthreaded hole section 11 and the blowing hole 31 on the blowing pipeline 3 are concentrically connected during welding.
The threaded connection section 211 is connected with the threaded section 12 through a thread pair structure, and the inner diameter of the threaded connection section 211 is equal to that of the unthreaded hole section 11.
The inner shuttle-shaped body 23 is fixed at the center of the runner in the runner shell 21 through the connecting ribs 22, the inner shuttle-shaped body 23 comprises a middle cylinder 231, one end of the middle cylinder 231, which is positioned at the threaded connection section 211, is provided with an upper cone 232, the other end of the middle cylinder 231 is provided with a lower cone 233, the height of the upper cone 232 is smaller than that of the lower cone 233, and the middle cylinder 231 is connected with the inner wall of the runner shell 21 through the plurality of connecting ribs 22; the connecting rib pieces 22 are of rectangular thin sheet structures and are uniformly arranged along the circumferential direction, the upper windward side and the lower leeward side of each connecting rib piece 22 are of arc-shaped structures so as to reduce resistance to airflow, and the connecting rib pieces 22 are used for uniformly separating the drainage holes 215 of the drainage section 213.
The drainage hole 215 is obliquely arranged on the cylindrical surface of the drainage section 213 along the circumferential direction, and the center line of the drainage hole 215 points to the inner center line of the runner housing 21 and is deviated to the downstream.
The flow channel shell 21, the connecting rib 22 and the inner shuttle-shaped body 23 in the blowing structural body 2 are connected into an integral structure.
In the invention, the threaded connector body 1 is of an integral structure, the interior of the threaded connector body is divided into a threaded section 12 and an unthreaded hole section 11 through a stepped structure, the welding end of the unthreaded hole section 11 is of an arc structure and is welded and fixed with a blowing pipeline 3, the unthreaded hole section 11 and a blowing hole 31 on the blowing pipeline 3 are ensured to be concentric during welding, and a glue injection hole 13 is processed on the side surface of the threaded section 12; the blowing structural part 2 is used as a functional main body and structurally comprises a flow channel shell 21, an internal fusiform body 23 and a connecting rib piece 22, wherein the flow channel shell 21 comprises a threaded connection section 211, an arc-shaped expansion section 212, a flow guide section 213 and a conical expansion section 214, a plurality of flow guide holes 215 are obliquely formed in the cylindrical surface of the flow guide section 213 along the circumferential direction, and the central lines of the flow guide holes 215 point to the internal central line of the flow channel shell 21 and are deviated to the downstream; the upper end and the lower end of the inner shuttle-shaped body 23 are in cone structures, the height of the upper cone 232 is smaller than that of the lower cone 233, and the middle cylinder 231 is connected with the inner wall surface of the runner housing 21 through the connecting rib 22; the connecting rib pieces 22 are of a rectangular thin sheet structure, the connecting rib pieces 22 are uniformly arranged along the circumferential direction, the windward side and the leeward side of the connecting rib pieces are both in arc-shaped design so as to reduce resistance to airflow, and the connecting rib pieces 22 uniformly separate drainage holes in the flow passage shell 21.
The unthreaded hole section 11 of the threaded connector body 1 and the blowing pipeline 3 are fixedly welded in an inserting mode (inner fit) or outer fit mode, the inner diameter of the unthreaded hole section 11 is equal to that of the threaded connection section 211, and the length of an internal thread of the threaded section 12 is not larger than that of an external thread of the threaded connection section 211 on the blowing structural member 2; and glue injection holes 13 are formed in the side faces of the threaded sections 12, and when the adhesive is installed, adhesives such as hot melt adhesive can be used for adhesion and looseness prevention.
According to the invention, a threaded mounting structure is adopted between the threaded connector body 1 and the blowing structural body 2, the contact surfaces of the interiors of the threaded connector body 1 and the blowing structural body 2 with air flow are smooth, the interior of the blowing structural body 2 is functionalized, and an internal shuttle-shaped body 23 arranged in the center of a flow channel is matched with an arc-shaped expansion section 212, a flow guide section 213 and a conical expansion section 214 of a flow channel shell 21 to construct corresponding functional structures such as a transition buffer section, an acceleration flow guide section, a flow guide injection section and the like; the transition buffer section is used for caching the potential energy of the air flow (pressure), the inlet of the transition buffer section is of a smooth curve gradually-expanding structure, and the outlet of the transition buffer section is of a lantern ring type gradually-changed section contraction structure; the accelerating drainage section is of an annular through-flow structure, the through-flow section of the accelerating drainage section is of a structure which is contracted firstly and then expanded, and an inclined drainage hole 215 is formed in the throat part, so that introduced air flow is enabled to flow into the main air flow in the same direction; the diversion injection section is of a horn-type expansion structure, the cone diversion design is adopted in the middle, functions of oscillation compensation, supersonic injection, increase of injection flow, diversion injection and the like during air injection can be realized, and meanwhile, the energy loss of air injection is reduced through the cone diversion structure,
the integration of the blowing structure 2 in the present invention is a functional expression, and the structure can be realized by using an integrated molding, or a molding method of segmented processing and recombination, and the application of a single function based on the structural features of the present invention also belongs to the claims of the present invention.
When the invention is applied specifically, the threaded joint body 1 is welded on the blowing pipeline 3 which is provided with the blowing holes 31 and processed in the pulse blowing system, the threaded joint body 1 and the corresponding blowing holes 31 are ensured to be fixed concentrically, and then the threaded joint body 1 and the blowing structural body 2 are screwed and connected and fixed by injecting glue from the glue injection holes 13. When the pulse spraying and blowing device is used, once the upstream pulse spraying and blowing valve is opened, compressed air reaches the spraying and blowing hole 31 through the air pipeline, then sequentially passes through the threaded connection section 211, the transition buffer section, the accelerated drainage section and the flow guide spraying section, and finally is sprayed out from the spraying and blowing structure. In the process, the compressed air flow is accelerated to the supersonic speed, the flow of the blowing air flow is increased through drainage, the target filter element can be efficiently blown, and the filter element can be recycled.
Claims (7)
1. A supersonic blowing device for online self-cleaning of an air filtering system comprises a threaded connector body (1) and a blowing structural body (2), and is characterized in that the threaded connector body (1) comprises a smooth hole section (11) with one end fixedly connected to a blowing pipeline (3), the other end of the smooth hole section (11) is connected with a threaded section (12), a glue injection hole (13) is formed in the side wall of the threaded section (12), the blowing structural body (2) comprises a flow channel shell (21), an internal shuttle-shaped body (23) is fixed in the flow channel shell (21) through a connecting rib piece (22), the flow channel shell (21) comprises a threaded connecting section (211) connected with the threaded section (12), one end of the threaded connecting section (211) is connected with an arc-shaped expansion section (212), one end of the arc-shaped expansion section (212) is connected with a drainage section (213), and a plurality of drainage holes (215) are obliquely formed in the cylindrical surface of the drainage section (213), one end of the drainage section (213) is connected with a conical expansion section (214).
2. The supersonic blowing device for on-line self-cleaning of air filtration system of claim 1, wherein the light hole section (11) and the blowing pipeline (3) are fixed by insert welding or external joint welding.
3. The supersonic blowing device for on-line self-cleaning of an air filtering system according to claim 1, wherein the smooth hole section (11) is connected with the screw thread section (12) in an integral type and has a ladder structure inside, the end surface of the connection end of the smooth hole section (11) and the blowing pipeline (3) is in an arc structure, the smooth hole section (11) and the blowing pipeline (3) are fixed by welding, and the smooth hole section (11) is concentrically connected with the blowing hole (31) on the blowing pipeline (3) during welding.
4. An on-line self-cleaning supersonic blowing device for air filtering system according to claim 1, characterized in that said screw connection section (211) is connected with screw thread section (12) through screw thread pair structure, the inner diameter of screw connection section (211) is equal to the inner diameter of smooth hole section (11).
5. The supersonic blowing device for on-line self-cleaning of an air filtering system according to claim 1, wherein the inner shuttle (23) is fixed at the center of the flow channel in the flow channel housing (21) through the connection rib (22), the inner shuttle (23) comprises a middle cylinder (231), one end of the middle cylinder (231) at the threaded connection section (211) is provided with an upper cone (232), the other end of the middle cylinder (231) is provided with a lower cone (233), the height of the upper cone (232) is less than that of the lower cone (233), and the middle cylinder (231) is connected with the inner wall of the flow channel housing (21) through the plurality of connection ribs (22); the connecting rib pieces (22) are of rectangular thin sheet structures and are uniformly arranged along the circumferential direction, the upper windward side and the lower leeward side of each connecting rib piece (22) are of arc-shaped structures so as to reduce resistance to airflow, and the connecting rib pieces (22) are used for uniformly separating the drainage holes (215) of the drainage sections (213).
6. The supersonic blowing device for on-line self-cleaning of air filtration system of claim 1, wherein the drainage hole (215) is formed on the cylindrical surface of the drainage segment (213) in a circumferential direction with an inclination, and the centerline of the drainage hole (215) points to the inner centerline of the runner housing (21) and is biased downstream.
7. An on-line self-cleaning supersonic blowing device for air filtering system according to claim 1, characterized in that the flow channel housing (21), the connecting rib (22) and the inner shuttle-shaped body (23) in the blowing structure (2) are connected as a monolithic structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110354637.0A CN113101758B (en) | 2021-04-01 | 2021-04-01 | Supersonic speed jetting device for online self-cleaning of air filtering system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110354637.0A CN113101758B (en) | 2021-04-01 | 2021-04-01 | Supersonic speed jetting device for online self-cleaning of air filtering system |
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| CN113101758A true CN113101758A (en) | 2021-07-13 |
| CN113101758B CN113101758B (en) | 2023-05-09 |
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| CN202110354637.0A Active CN113101758B (en) | 2021-04-01 | 2021-04-01 | Supersonic speed jetting device for online self-cleaning of air filtering system |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1339313A (en) * | 1971-02-18 | 1973-12-05 | S & C Electric Co | Directional nozzle for use with a high voltage circuit interrupter |
| CN102961934A (en) * | 2012-11-22 | 2013-03-13 | 中国石油大学(北京) | Self-oscillation nozzle and filter pulse jet cleaning ash-removing device with same |
| CN105169835A (en) * | 2015-10-24 | 2015-12-23 | 西南科技大学 | Flow guiding dispersion nozzle for bag type dust collector |
| CN206487494U (en) * | 2017-02-24 | 2017-09-12 | 江苏建筑职业技术学院 | A kind of tunnel pre support refractory gunning equipment |
| CN109184863A (en) * | 2018-09-30 | 2019-01-11 | 潍柴动力股份有限公司 | A kind of SCR hybrid system and its SCR mixer |
| CN109225694A (en) * | 2018-09-30 | 2019-01-18 | 南昌大学 | Adjustable melange effect deashing device for pulse blow filter |
| CN109550328A (en) * | 2018-12-28 | 2019-04-02 | 南京工业大学 | A kind of pulse jet system of sack cleaner |
| CN111420207A (en) * | 2020-05-11 | 2020-07-17 | 郑州大学第一附属医院 | Bidirectional intubation tracheotomy expansion device with intubation channel |
-
2021
- 2021-04-01 CN CN202110354637.0A patent/CN113101758B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1339313A (en) * | 1971-02-18 | 1973-12-05 | S & C Electric Co | Directional nozzle for use with a high voltage circuit interrupter |
| CN102961934A (en) * | 2012-11-22 | 2013-03-13 | 中国石油大学(北京) | Self-oscillation nozzle and filter pulse jet cleaning ash-removing device with same |
| CN105169835A (en) * | 2015-10-24 | 2015-12-23 | 西南科技大学 | Flow guiding dispersion nozzle for bag type dust collector |
| CN206487494U (en) * | 2017-02-24 | 2017-09-12 | 江苏建筑职业技术学院 | A kind of tunnel pre support refractory gunning equipment |
| CN109184863A (en) * | 2018-09-30 | 2019-01-11 | 潍柴动力股份有限公司 | A kind of SCR hybrid system and its SCR mixer |
| CN109225694A (en) * | 2018-09-30 | 2019-01-18 | 南昌大学 | Adjustable melange effect deashing device for pulse blow filter |
| CN109550328A (en) * | 2018-12-28 | 2019-04-02 | 南京工业大学 | A kind of pulse jet system of sack cleaner |
| CN111420207A (en) * | 2020-05-11 | 2020-07-17 | 郑州大学第一附属医院 | Bidirectional intubation tracheotomy expansion device with intubation channel |
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