CN113101758B - Supersonic speed jetting device for online self-cleaning of air filtering system - Google Patents
Supersonic speed jetting device for online self-cleaning of air filtering system Download PDFInfo
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- CN113101758B CN113101758B CN202110354637.0A CN202110354637A CN113101758B CN 113101758 B CN113101758 B CN 113101758B CN 202110354637 A CN202110354637 A CN 202110354637A CN 113101758 B CN113101758 B CN 113101758B
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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
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Abstract
The utility model provides an online self-cleaning supersonic speed jetting device that uses of air filtration system, includes the screwed joint body, jetting structure body, the screwed joint body includes one end fixed connection unthreaded hole section on the jetting pipeline, and the other end of unthreaded hole section is connected with the screw thread section, is equipped with the injecting glue hole on the lateral wall of screw thread section, the jetting structure body is including the runner casing, is fixed with inside shuttle body through the connection muscle 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 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 is connected with the toper expansion section. The device can effectively weaken the vibration fluctuation that probably causes of pulse air current high-speed jetting, avoids filter element to blow the secondary raise dust problem that the pressure fluctuation caused because of the jetting, 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
On one hand, the air is taken as important production data and is 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 service life of gas utilization equipment; on the other hand, air is taken as an essential environmental factor for human survival, and directly affects human health.
In recent years, under the guidance of national green development concepts, air quality problems are increasingly emphasized, and air filtering devices are widely applied to the field of industrial production. The construction and maintenance costs of air filtration equipment are also important expenditures for industrial manufacturing facilities. As the core of the filter device, the filter element gradually increases in filtration resistance as the filtered impurities accumulate during use, and needs to be replaced when the rated resistance is reached. 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 filter equipment can effectively prolong the service life of the filter element, reduce the maintenance cost and is widely applied to the industrial field. The pulse blowing self-cleaning type filtering equipment adopts the principle of reverse pulse ash removal of compressed air, has good ash removal effect, is provided with a cylindrical close-pleated type filtering element (large filtering area per unit volume, low running resistance and long service life), and becomes main stream equipment for industrial air purification.
The pulse jetting self-cleaning filter equipment is provided with a pulse back-blowing ash removing system which mainly comprises an air bag, an electromagnetic pulse valve, a jetting 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 sprayed out from the nozzle, the filter element is injected from inside to outside, and impurities such as dust accumulated on the outer surface of the filter material are dropped off, so that the filter material is regenerated. The nozzle is a key functional component for realizing effective blowing of compressed air flow to the filter element and is used for controlling the speed, direction, strength and blowing range of back blowing air flow, and the blowing and dust removing effect of the back blowing dust removing system to the filter element is directly determined.
At present, the widely used nozzle structure is more focused on the realization of supersonic jet, and the targeted design for the problems of oscillation, kinetic energy loss and the like possibly occurring in the pulsed high-speed airflow is lacking.
Disclosure of Invention
The invention aims to provide a supersonic blowing device for online self-cleaning of an air filtering system, which solves the oscillation fluctuation possibly caused by high-speed blowing of pulse air flow, avoids the secondary dust raising problem of a filtering element caused by blowing pressure fluctuation, and reduces blowing energy consumption.
The technical scheme who adopts for realizing above-mentioned purpose is, an online self-cleaning supersonic speed jetting device of air filtration system, including screwed joint body, jetting structure body, screwed joint body includes that one end fixed connection is at the unthreaded hole section on the jetting pipeline, and the other end of unthreaded hole section is connected with the screw thread section, is equipped with the injecting glue hole on the lateral wall of screw thread section, the jetting structure body is including the runner casing, is fixed with inside shuttle body through connecting the fin 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 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 circumferencial direction slope on the face of cylinder of drainage section, the one end of drainage section is connected with toper expansion section.
Furthermore, the unthreaded hole section and the jetting pipeline are fixed by plug-in welding or external fitting welding.
Further, the integral type inner part is connected with the thread section in a stepped structure, the end face of the connecting end of the unthreaded hole section and the injection pipeline is of an arc structure, the unthreaded hole section and the injection pipeline are fixed by welding, and the unthreaded hole section and the injection hole on the injection pipeline are concentrically connected during welding.
Further, the threaded connection section is connected with the threaded section through a threaded pair structure, and the inner diameter of the threaded connection section is equal to the inner diameter of the unthreaded hole section.
Further, the inner shuttle body is fixed at the center of the runner in the runner shell through the connecting ribs, the inner shuttle body comprises a middle cylinder, an upper cone is arranged at one end of the middle cylinder, which is positioned at the threaded connecting section, a lower cone is arranged at the other end of the middle cylinder, 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 runner shell through a plurality of connecting ribs; the connecting rib sheets are of rectangular sheet structures and are uniformly arranged along the circumferential direction, the upper windward side and the lower leeward side of the connecting rib sheets are of arc structures so as to reduce resistance to air flow, and the connecting rib sheets uniformly separate a plurality of drainage holes of the drainage section.
Further, 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 runner shell and deviates downstream.
Further, the runner shell, the connecting ribs and the inner shuttle 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, accelerating drainage and cone diversion, the ultrasonic blowing is realized, the oscillation fluctuation of high-speed airflow can be effectively weakened, and the blowing energy consumption is reduced;
2. the invention adopts a welding type threaded joint installation mode, is simple and convenient, is provided with the glue injection holes, and can effectively prevent loosening in the use process by glue injection fixation.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall structure of the present invention;
FIG. 3 is a front view of the blowing structure of the present invention;
FIG. 4 is a side cross-sectional view of a blowing structure of the present invention;
FIG. 5 is a top view of a blowing structure according to the present invention;
FIG. 6 is a schematic view of a threaded joint body according to the present invention;
FIG. 7 is a cross-sectional view of a threaded joint body according to the present invention;
fig. 8 is a diagram showing an exemplary application of the structure of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention is further described below with reference to examples and figures.
The utility model provides an online self-cleaning supersonic speed jetting device that uses of air filtration system, includes screwed joint body 1, jetting structure body 2, as shown in fig. 1-8, screwed joint body 1 includes that one end fixed connection is at the unthreaded hole section 11 on jetting pipeline 3, and the other end of unthreaded hole section 11 is connected with screw thread section 12, is equipped with injecting glue hole 13 on the lateral wall of screw thread section 12, jetting structure body 2 is including runner casing 21, is fixed with inside shuttle type 23 through connecting the fin 22 in the runner casing 21, runner casing 21 includes the threaded connection section 211 that is connected with screw thread section 12, and the one end of threaded connection section 211 is connected with arc expansion section 212, and the one end of arc expansion section 212 is connected with drainage section 213, a plurality of drainage holes 215 have been seted up along the circumferencial direction slope on the face of drainage section 213, and the one end of drainage section 213 is connected with toper expansion section 214.
The unthreaded hole section 11 and the injection pipeline 3 are fixed by insert welding or external fitting welding.
The integral type inner part is connected with the threaded section 12 in a stepped structure, the end face of the connecting end of the unthreaded hole section 11 and the injection pipeline 3 is of an arc structure, the unthreaded hole section 11 and the injection pipeline 3 are fixed by welding, and the unthreaded hole section 11 and the injection hole 31 on the injection pipeline 3 are concentrically connected during welding.
The threaded connection section 211 is connected with the threaded section 12 through a threaded pair structure, and the inner diameter of the threaded connection section 211 is equal to the inner diameter of the unthreaded hole section 11.
The inner shuttle body 23 is fixed at the center of the runner in the runner housing 21 through the connecting ribs 22, the inner shuttle body 23 comprises a middle cylinder 231, one end of the middle cylinder 231, which is positioned at the threaded connecting 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 housing 21 through a plurality of connecting ribs 22; the connecting ribs 22 are rectangular thin structures and are uniformly arranged along the circumferential direction, the upper windward side and the lower leeward side of the connecting ribs 22 are arc structures so as to reduce resistance to air flow, and the plurality of connecting ribs 22 uniformly separate the plurality of drainage holes 215 of the drainage section 213.
The drainage hole 215 is formed on the cylindrical surface of the drainage section 213 in a manner of being inclined along the circumferential direction, and the center line of the drainage hole 215 is directed to the inner center line of the flow channel shell 21 and is biased to the downstream.
The runner housing 21, the connecting ribs 22 and the inner shuttle 23 in the blowing structure 2 are connected into a monolithic structure.
In the invention, the threaded connector body 1 is of an integral structure, the inside of the threaded connector body is divided into a threaded section 12 and a 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 the injection pipeline 3, the unthreaded hole section 11 and an injection hole 31 on the injection 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 member 2 is used as a functional main body, and the structure of the blowing structural member comprises a runner shell 21, an inner shuttle-shaped body 23 and a connecting rib piece 22, wherein the runner shell 21 comprises a threaded connecting section 211, an arc-shaped expanding section 212, a drainage section 213 and a conical expanding section 214, a plurality of drainage holes 215 are obliquely formed in the cylindrical surface of the drainage section 213 along the circumferential direction, and the central line of the drainage holes 215 points to the inner central line of the runner shell 21 and deviates to the downstream; the upper end and the lower end of the inner shuttle 23 are 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 shell 21 through the connecting rib 22; the connecting ribs 22 are rectangular sheet structures, and a plurality of the connecting ribs 22 are uniformly arranged along the circumferential direction, and the windward side and the leeward side of the connecting ribs are arc-shaped to reduce resistance to air flow, and the connecting ribs 22 uniformly separate drainage holes in the runner shell 21.
The unthreaded hole section 11 of the threaded joint body 1 and the injection pipeline 3 are fixed by plug-in welding (internal bonding) or external bonding welding, the inner diameter of the unthreaded hole section 11 is equal to the inner diameter of the threaded connecting section 211, and the length of the internal thread of the threaded section 12 is not greater than the length of the external thread of the threaded connecting section 211 on the injection structural member 2; the side surface of the thread section 12 is provided with a glue injection hole 13, and when the thread section is installed, adhesive such as hot melt adhesive can be used for adhesion and looseness prevention.
In the invention, a threaded installation structure is adopted between a threaded connector body 1 and a blowing structure body 2, the contact surfaces between the interior of the threaded connector body 1 and the interior of the blowing structure body 2 and air flow are smooth, the interior of the blowing structure body 2 is in a functional configuration, an inner shuttle body 23 arranged in the center of a runner is matched with an arc-shaped expansion section 212, a drainage section 213 and a conical expansion section 214 of a runner shell 21, and corresponding functional structures such as a transition buffer section, an acceleration drainage section, a diversion injection section and the like are constructed; the transition buffer section is used for buffering potential energy of air flow (pressure), the inlet of the transition buffer section is of a smooth curve gradual expansion structure, and the outlet of the transition buffer section is of a lantern ring type gradual change cross-section contraction structure; the accelerating drainage section is of an annular flow-through structure, the flow-through section of the accelerating drainage section is of a first-shrinking-then-expanding structure, and the throat part is provided with an inclined drainage hole 215, so that the introduced air flow is converged into the main air flow in the same direction; the flow guiding injection section is of a horn-shaped expansion structure, the middle adopts a cone flow guiding design, the functions of vibration compensation, supersonic speed injection, flow increase of the injected air, flow guiding injection and the like during air flow injection can be realized, meanwhile, the energy loss of the air flow injection is reduced through the cone flow guiding structure,
the blowing structure 2 according to the present invention is functionally expressed, and the structure can be implemented by integral molding, or by molding by sectional processing and recombination, and the application of the individual functions based on the structural features of the present invention is also claimed.
In the specific application, the threaded connector body 1 is welded to the injection pipeline 3 with the injection holes 31 processed in the pulse injection system, so that the threaded connector body 1 and the corresponding injection holes 31 are ensured to be concentrically fixed, and then the threaded connector body 1 and the injection structure body 2 are screwed and connected and fixed through glue injection from the glue injection holes 13. When the air-jet type air-jet valve is used, once the upstream pulse air-jet valve is opened, compressed air reaches the air-jet hole 31 through the air pipeline, and then sequentially passes through the threaded connection section 211, the transition buffer section, the accelerating drainage section and the diversion jet section, and finally is jetted out from the air-jet structure. In the process, the compressed air flow is accelerated to supersonic speed, and the blowing air flow is increased through drainage, so that the target filter element can be efficiently blown, and the filter element can be regenerated.
Claims (5)
1. The utility model provides a supersonic speed jetting device that air filtration system was used on line self-cleaning, includes screwed joint body (1), jetting structure body (2), its characterized in that, screwed joint body (1) includes one end fixed connection unthreaded hole section (11) on jetting pipeline (3), and threaded section (12) are connected to the other end of unthreaded hole section (11), are equipped with injecting glue hole (13) on the lateral wall of threaded section (12), jetting structure body (2) are including runner casing (21), are fixed with inside shuttle body (23) through connecting rib piece (22) in runner casing (21), runner casing (21) include threaded connection section (211) that are connected with threaded section (12), and one end of threaded connection section (211) is connected with arc expansion section (212), and one end of arc expansion section (212) is connected with drainage section (213), a plurality of drainage holes (215) have been seted up along the circumferencial direction slope on the face of drainage section (213), and one end of drainage section (213) is connected with conical expansion section (214); the inner shuttle body (23) is fixed at the center of the runner in the runner shell (21) through the connecting ribs (22), the inner shuttle body (23) comprises a middle cylinder (231), one end of the middle cylinder (231) positioned at the threaded connecting 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 a plurality of connecting ribs (22); the connecting ribs (22) are of rectangular sheet structures and are uniformly arranged along the circumferential direction, the upper windward side and the lower leeward side of the connecting ribs (22) are of arc structures so as to reduce resistance to air flow, and the plurality of connecting ribs (22) uniformly separate a plurality of 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 central line of the drainage hole (215) points to the inner central line of the runner shell (21) and deviates downstream.
2. The ultrasonic blowing device for on-line self-cleaning of an air filtration system according to claim 1, wherein the light hole section (11) and the blowing pipeline (3) are fixed by insert welding or external bonding welding.
3. The ultrasonic blowing device for online self-cleaning of an air filtering system according to claim 1, wherein the unthreaded hole section (11) and the threaded section (12) are connected in a monolithic structure, the connecting end face 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.
4. The ultrasonic jetting device for online self-cleaning of an air filtering system according to claim 1, wherein the threaded connection section (211) is connected with the threaded section (12) through a threaded pair structure, and the inner diameter of the threaded connection section (211) is equal to the inner diameter of the unthreaded hole section (11).
5. An on-line self-cleaning supersonic blowing device for air filtration system according to claim 1, characterized in that the runner housing (21), the connecting ribs (22), the inner shuttle (23) in the blowing structure (2) are connected as a unitary 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN113101758A CN113101758A (en) | 2021-07-13 |
| CN113101758B true 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169835A (en) * | 2015-10-24 | 2015-12-23 | 西南科技大学 | Flow guiding dispersion nozzle for bag type dust collector |
| 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU433219B2 (en) * | 1971-02-18 | 1973-03-22 | S & C Electric Company | Directional nozzle for use with a high voltage circuit interrupter |
| CN102961934B (en) * | 2012-11-22 | 2014-08-06 | 中国石油大学(北京) | Self-oscillation nozzle and filter pulse jet cleaning ash-removing device with same |
| 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 |
| CN109225694A (en) * | 2018-09-30 | 2019-01-18 | 南昌大学 | Adjustable melange effect deashing device for pulse blow filter |
| CN109184863B (en) * | 2018-09-30 | 2020-11-20 | 潍柴动力股份有限公司 | SCR mixing system and SCR mixer thereof |
| CN109550328B (en) * | 2018-12-28 | 2023-08-25 | 南京工业大学 | Pulse jetting system of bag collector |
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2021
- 2021-04-01 CN CN202110354637.0A patent/CN113101758B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169835A (en) * | 2015-10-24 | 2015-12-23 | 西南科技大学 | Flow guiding dispersion nozzle for bag type dust collector |
| 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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