CN214106156U

CN214106156U - Blowback filter nozzle and filter

Info

Publication number: CN214106156U
Application number: CN202022775436.1U
Authority: CN
Inventors: 倪国强
Original assignee: Cci Thermal Nanjing Co ltd
Current assignee: Cci Thermal Nanjing Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-09-03
Anticipated expiration: 2030-11-26

Abstract

The utility model provides a blowback filter nozzle and filter, wherein the nozzle includes the nozzle body and runs through the nozzle pipeline of nozzle main part, the nozzle pipeline forms the restricted aperture in blowback gas outlet department, the internal diameter of restricted aperture is from keeping away from the position of blowback gas outlet diminishes to blowback gas outlet department gradually. The utility model discloses a pulse blowback nozzle adopts the restricted aperture, simple structure, has increased the blowing area in the blowback process, can all-round evenly give vent to anger moreover, when having reduced pulse blowback nozzle and having arranged quantity, improves the reliability of filter core blowback regeneration; along with the reduction of the number of the pulse back-blowing nozzles, the number of the arranged pipelines is correspondingly reduced, so that the cost is reduced, and the later-stage operation and maintenance cost is reduced.

Description

Blowback filter nozzle and filter

Technical Field

The utility model relates to a gas-solid separation technical field, especially a blowback filter nozzle and filter.

Background

At present, the main body of the back-blowing filter for industrial use is composed of a pressure vessel, a back-blowing nozzle, a filter element and the like. Waste gas intercepts dust and solid particles through the filter, clean gas is discharged, and when a pressure difference alarm value is reached, the filter element of the filter needs to be subjected to back flushing cleaning, so that the aim of recycling the filter element is fulfilled. The back-flushing regeneration process of the filter element has high requirements on a back-flushing nozzle of equipment, the nozzle structure commonly used at present is simple, the nozzle purging area of a single pipeline in the back-flushing process is small, air outlet is uneven, back-flushing regeneration of the filter element is not thorough, and the commonly used solution is to increase the number of the back-flushing nozzles and the back-flushing pipelines to solve or perform multiple purging, so that materials are wasted, and the later-stage operation and maintenance cost is increased.

Disclosure of Invention

In order to overcome the inhomogeneous problem of current blowback filter blowback nozzle jet-blast, the utility model provides an adopt blowback filter nozzle and filter, this pulse blowback nozzle with restricted aperture structure can not only increase the area of sweeping at the blowback process, can all-round evenly give vent to anger moreover, improves the reliability of filter core blowback regeneration and reduces the pipeline arrangement reduce cost and reduce later stage fortune dimension cost.

The utility model provides a blowback filter nozzle, include nozzle body and the nozzle pipeline who runs through the nozzle main part, the nozzle pipeline forms the restricted aperture in blowback gas outlet department, the internal diameter of restricted aperture is from keeping away from blowback gas outlet's position diminishes to blowback gas outlet department gradually.

Furthermore, the included angle between the inclined edge of the section of the flow limiting hole and the vertical line is 15-45 degrees.

The utility model also provides a gaseous blowback filter, including pressure vessel, be equipped with orifice plate, filter core in the pressure vessel, the orifice plate will pressure vessel's inner space divide into clean gas cavity and dusty gas cavity, at dusty gas cavity room side be equipped with at least one filter core on the orifice plate, its characterized in that, at clean gas cavity room side the orifice plate top be equipped with among the above-mentioned technical scheme the nozzle.

Further, the number of the nozzles is at least one.

Furthermore, the nozzle is connected with a back-blowing pipeline, and the other end of the back-blowing pipeline is connected with a back-blowing tank.

Further, be equipped with gas diffuser above the orifice plate, gas diffuser is for leaking hopper-shaped, and the area of going up the cross-section is greater than the area of lower cross-section.

The utility model discloses following beneficial effect has: the pulse back-blowing nozzle adopts the flow-limiting hole, has simple structure, increases the back-blowing area in the back-blowing process, can uniformly exhaust air in all directions, reduces the arrangement quantity of the pulse back-blowing nozzle, and improves the back-blowing regeneration reliability of the filter element; along with the reduction of the number of the pulse back-blowing nozzles, the number of the arranged pipelines is correspondingly reduced, so that the cost is reduced, and the later-stage operation and maintenance cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a back-flushing filter nozzle according to an embodiment of the present invention;

FIG. 2 is a schematic view of a blowback filter according to another embodiment;

description of reference numerals:

1-blowback nozzle, 11-restricted orifice, 2-orifice plate, 3-filter core, 4-gas diffuser, 5-blowback pipeline, 6-blowback pipeline solenoid valve, 7-air inlet, 8-gas outlet, 9-blowback jar, 10-pressure vessel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The pulse back-blowing nozzle 1 provided by the embodiment comprises a nozzle body and a nozzle pipeline penetrating through the nozzle body, wherein the nozzle pipeline forms a flow limiting hole 11 at a back-blowing gas outlet, and the inner diameter of the flow limiting hole 11 is gradually reduced from a position far away from the back-blowing gas outlet to the back-blowing gas outlet as shown in fig. 1. Thus, when the gas passes through the flow limiting hole 11, the gas beam can be thinned or contracted, the flow speed is increased, the static pressure is reduced, and the pressure difference is generated in front of and behind the flow limiting hole 11, so that the purging area is increased, and the gas is uniformly sprayed.

As a preferred embodiment, the included angle between the inclined edge of the section of the flow limiting hole 11 and the vertical line is 15-45 degrees, so that the energy loss of high-pressure blowback gas can be reduced. The structural size of the back-blowing nozzle 1 is determined by the size of a back-blowing gas outlet and the mass flow of high-pressure back-blowing gas required.

The utility model provides an embodiment of gaseous blowback filter, as shown in FIG. 2, including pressure vessel 10, be equipped with orifice plate 2, filter core 3 in the pressure vessel 10, orifice plate 2 divide into the clean gas cavity on upper portion and the dusty gas cavity of lower part with the inner space of pressure vessel 10, is equipped with air inlet 7 in dusty gas cavity, is equipped with gas outlet 8 in clean gas cavity. At least one filter element 3 is arranged on the pore plate 2 of the dust-containing gas chamber side, and the back-blowing nozzle 1 in the technical scheme is arranged above the pore plate 2 of the clean gas chamber side.

In a preferred embodiment, there is at least one blow-back nozzle 1, and three blow-back nozzles 1 are shown in fig. 2, but the number of blow-back nozzles 1 can be set according to actual needs.

Specifically, the back-blowing nozzle 1 is connected with a back-blowing pipeline 5, and the other end of the back-blowing pipeline 5 is connected with a back-blowing tank 9.

Waste gas passes through the filter interception dust and solid particle, and the clean gas of discharge when the filter reaches the pressure differential alarm value, carries out the blowback to filter element 3 of filter and washs, and outside clean air supply sweeps dust and the solid particle who washs filter element 3 surface through arranging pulse blowback nozzle 1 above filter element 3 to reach the regeneration use purpose of filter element.

Specifically, during operation, dust-containing gas enters the dust-containing gas chamber from the gas inlet 1 and reaches the filter element 3 under the action of gas thrust, dust particles in gas flow are intercepted on the outer surface of the filter element 3 and form a powder cake layer, and the gas is filtered by the filter element 3 and then enters the clean gas chamber and is discharged through the gas outlet 5 to enter a subsequent process. Along with the filtering operation, the powder cake layer on the outer surface of the filter element 3 is gradually thickened, so that the pressure drop of the filtering device is increased, and the performance of the filter tube needs to be regenerated by adopting a pulse back blowing mode. The piezoelectric transmitter transmits a pressure signal to a Programmable Logic Controller (PLC), and when a set back-blowing pressure difference is reached, the PLC transmits a back-blowing signal to a pulse controller so as to control the back-blowing pipeline electromagnetic valve 6 to be opened. High-pressure blowback deashing gas is by blowback jar 9, through blowback pipeline 5, reachs blowback nozzle 1, and a large amount of "secondary efflux" of entrainment gets into gas diffuser 4 in blowback nozzle 1 department, forms inferior high-pressure gas at gas diffuser 4 inside misce bene, and inferior high-pressure gas further expands and blowback filter core 3's outer wall face after getting into filter core 3, falls the dust of filter core 3 outer wall face in blowing down the ash bucket, reaches the purpose of blowback deashing.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features.

Claims

1. The utility model provides a blowback filter nozzle, includes nozzle body and the nozzle pipeline who runs through the nozzle main part, its characterized in that, the nozzle pipeline forms the restricted aperture in blowback gas outlet department, the internal diameter of restricted aperture is from keeping away from the position of blowback gas outlet diminishes to blowback gas outlet department gradually.

2. A blow back filter nozzle according to claim 1 wherein the angle between the oblique side of the flow restriction orifice cross-section and the vertical is between 15 ° and 45 °.

3. A gas blowback filter, includes pressure vessel, be equipped with orifice plate, filter core in the pressure vessel, the orifice plate will pressure vessel's inner space divide into clean gas cavity and dirty gas cavity, at dirty gas cavity room side be equipped with at least one filter core on the orifice plate, its characterized in that, in clean gas cavity room side the orifice plate top be equipped with claim 1 or 2 blowback filter nozzle.

4. A blow back filter according to claim 3, wherein there is at least one nozzle.

5. The blowback filter of claim 3, wherein the nozzle is connected to a blowback line, and the other end of the blowback line is connected to a blowback tank.

6. A blowback filter according to claim 3, wherein a gas diffuser is provided above the perforated plate, the gas diffuser being funnel-shaped with an upper cross-sectional area greater than a lower cross-sectional area.