CN111228949A

CN111228949A - Pre-filtering device of gas purifier

Info

Publication number: CN111228949A
Application number: CN202010095739.0A
Authority: CN
Inventors: 焦琮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-06-05

Abstract

The invention relates to the technical field of environment-friendly equipment, and discloses a pre-filtering device of a gas purifier, which comprises a pre-processing box, wherein the inner cavity of the pre-processing box is divided into a gas inlet cavity and a gas outlet cavity which are bilaterally symmetrical by a partition plate, a gas outlet cavity positioned at the top end of the inner cavity of the pre-processing box, and a filtering cavity positioned below the gas outlet cavity, a filtering pipeline is arranged inside the filtering cavity, the filtering pipeline is a continuous S-shaped coil pipe, the left end and the right end of the filtering pipeline are respectively communicated with the inner cavities of the gas inlet cavity and the gas outlet cavity, the inner cavity of a bent pipe in the middle of the filtering pipeline is communicated with the inner cavity of the. The filter cavity is internally provided with the filter pipeline, gas particles transmitted from the connecting pipe are attached to the inner wall of the centrifugal plate to flow and be blocked and retained by utilizing the centrifugal action of the centrifugal plate, meanwhile, the filter screen plate is arranged above the centrifugal plate, and the gas after the centrifugal treatment of the centrifugal plate is filtered and then is discharged from the gas guide pipe, so that the gas prefiltering is finished at the filter pipeline.

Description

Pre-filtering device of gas purifier

Technical Field

The invention relates to the technical field of environment-friendly equipment, in particular to a pre-filtering device of a gas purifier.

Background

At present, the equipment for gas purification treatment uses a filtering mode at different stages or degrees to separate mixtures of gas, solid, gas and liquid, the size of a filter hole of a filter screen or a filter membrane directly influences the realization of the filtering effect, the filter hole is large, the filtering effect is poor, the filter hole is small, and the filter screen or the filter hole is easily blocked by particles to influence the flux of the filter screen or the filter hole. The best use effect of the conventional filter screen is that the solid particles in the gas have a slightly larger size than the mesh size and easily fall off the filter screen. Therefore, before gas purification treatment, gas needs to be subjected to pre-filtration treatment, so that the purification treatment efficiency is improved on one hand, and long-term operation of purification equipment is ensured on the other hand.

Disclosure of Invention

Aiming at the defects of the prior gas purifier in the use process, the invention provides the pre-filtering device of the gas purifier, which has the advantages of synchronous pre-filtering and filtering, good pre-filtering effect and convenience in cleaning, and solves the problems in the prior art.

The invention provides the following technical scheme: the utility model provides a prefiltering device of gas purifier, includes the preliminary treatment case, the inner chamber of preliminary treatment case is decorated the air inlet chamber and the exhaust chamber of bilateral symmetry by the baffle branch, is located the exhaust chamber of preliminary treatment case inner chamber top and is located the filter chamber of exhaust chamber below, the inside of filter chamber is equipped with filtering conduit, filtering conduit is continuous S type coil pipe, filtering conduit 'S the inner chamber that admits air the chamber and exhaust chamber is communicate respectively at the left and right sides, filtering conduit' S middle part return bend inner chamber communicates the inner chamber of exhaust chamber, the air inlet intracavity insole is equipped with the air inlet, the inner bottom of exhaust chamber is equipped with the gas vent, the inner top of exhaust chamber is equipped with the extraction opening, filtering conduit comprises connecting pipe, centrifugal plate, filter screen board and air duct, the connecting pipe is flat straight tube section, the centrifugal plate is the semicircle section that is located the connecting pipe outward flange, filter screen board is the semicircle section that is located the connecting pipe inward, the centrifugal plate and the concentric circular arc section of the filter screen plate, and the filter screen plate is a steel wire filter screen the top on the inner edge of the connecting pipe and above the filter screen plate are provided with air ducts, the top of the air duct is communicated with the inner cavity of the exhaust cavity, and the filter pipelines are sequentially connected into a whole.

Preferably, an accelerating tube is arranged at the end of the connecting tube entering the centrifugal plate, and the accelerating tube is a variable-section with a gradually-reduced section.

Preferably, the inlet cross section of the accelerating tube is the same as the outlet cross section of the last adjacent accelerating tube.

Preferably, the edge butt-joint surface of the centrifugal plate and the connecting pipe is connected in a mode that a convex frame is matched with the notch groove.

Preferably, the port of the air pumping port extending into the exhaust cavity is respectively arranged between the two air guide pipes, and the port of the air pumping port is lower than the port of the air guide pipe in relative height.

The invention has the following beneficial effects:

1. the filter cavity is internally provided with the filter pipeline, gas particles transmitted from the connecting pipe are attached to the inner wall of the centrifugal plate to flow and be blocked and retained by utilizing the centrifugal action of the centrifugal plate, meanwhile, the filter screen plate is arranged above the centrifugal plate, the gas after centrifugal treatment at the centrifugal plate is filtered and then is discharged by the gas guide pipe, so that gas prefiltering is finished at the filter pipeline, the retained particles at the filter screen plate can be combined with vibration brought by high-speed gas flow to fall off under the action of self weight, and the gas guide pipe is only arranged at the filter screen plate, so that the gas flow in the filter cavity is stable, no turbulent flow is generated, and the filter cavity is favorable for filtering.

2. According to the invention, the centrifugal plate and the connecting pipe are correspondingly arranged in a clamping manner, so that particles in the centrifugal plate can be conveniently and regularly extracted and cleaned, and meanwhile, the filter screen plate can be conveniently cleaned.

3. According to the centrifugal plate, the inner cavity of the connecting pipe is designed to be the variable cross section, so that gas entering the centrifugal plate from the connecting pipe can be accelerated for a short time and then enters the centrifugal plate, the centrifugal retention effect of particles in the centrifugal plate can be improved, and the accelerated gas flow can contribute to providing vibration at the filter screen plate, so that the particles separated at the filter screen plate can fall down.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the filter tube of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of an accelerator tube according to the present invention.

In the figure: 1. a pretreatment tank; 11. an air inlet cavity; 12. an exhaust chamber; 13. a filter chamber; 14. an exhaust chamber; 2. a filtration pipeline; 21. a connecting pipe; 21a, an accelerating tube; 22. a centrifugal plate; 23. a filter screen plate; 24. an air duct; 3. an air inlet; 4. an exhaust port; 5. an air exhaust port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a pre-filtering device of a gas purifier comprises a pre-processing box 1, the inner cavity of the pre-processing box 1 is divided into an air inlet cavity 11 and an air outlet cavity 12 which are bilaterally symmetrical by a partition board, an air outlet cavity 14 positioned at the top end of the inner cavity of the pre-processing box 1 and a filter cavity 13 positioned below the air outlet cavity 14, a filter pipeline 2 is arranged inside the filter cavity 13, the filter pipeline 2 is a continuous S-shaped coil pipe, the left end and the right end of the filter pipeline 2 are respectively communicated with the inner cavities of the air inlet cavity 11 and the air outlet cavity 12, the middle bent pipe inner cavity of the filter pipeline 2 is communicated with the inner cavity of the air outlet cavity 14, an air inlet 3 is arranged at the inner bottom of the air inlet cavity 11, the air inlet 3 is filled with gas to be purified, an air outlet 4 is arranged at the inner bottom of the air outlet cavity 12, the air outlet 4 is used for discharging the untreated gas to the source of the air inlet, the extraction opening 5 is used for discharging the pre-filtered gas in the filter pipe 2. Wherein, refer to fig. 2 and show, filtering duct 2 comprises connecting pipe 21, centrifugal plate 22, filter plate 23 and air duct 24, connecting pipe 21 is flat straight tube section, the cross-section of connecting pipe 21 is the rectangle, centrifugal plate 22 is for being located the semicircle section of connecting pipe 21 outward flange, filter plate 23 is for being located the semicircle section of connecting pipe 21 inward flange, centrifugal plate 22 and filter plate 23's concentric circular arc section, and filter plate 23 is the steel wire filter screen, top and the top that is located filter plate 23 are equipped with air duct 24 on connecting pipe 21's inward flange, air duct 24's top lets in the inner chamber of exhaust chamber 14, multiunit filtering duct 2 connects gradually and is a whole.

Therefore, in the pre-filtering device, the gas to be treated is introduced from the gas inlet 3, and is pressed into the connecting pipe 21 through the gas inlet cavity 11, when the gas reaches the centrifugal plate 22, due to the turning centrifugal action, larger solid particles are retained on the inner wall of the centrifugal plate 22 by the centrifugal action, and the gas which is positioned at the centrifugal plate 22 and is eccentric to the center of circle (namely, is close to the filter screen plate 23) enters the gas guide pipe 24 through the filter screen plate 23, and is finally discharged from the gas suction opening 5, and the residual gas in the filter pipeline 2 continues to enter the exhaust cavity 12 through the next filter pipeline 2 and is discharged from the exhaust opening 4. In order to ensure that gas in the equipment smoothly passes through and improve the pre-filtering efficiency, an air blower and an air exhauster can be respectively arranged at the end parts of the air inlet 3 and the air exhaust opening 5, the two machine types run by adopting a differential speed, and the air blast amount at the air inlet 3 is higher than the air exhaust amount at the air exhaust opening 5.

In order to improve the pre-filtering effect of the centrifugal retention of the solid particles, an accelerating tube 21a is arranged at the end of the connecting tube 21 entering the centrifugal plate 22, and the accelerating tube 21a is a variable section with a gradually reduced section. Accomplish the gas acceleration effect to getting into in the centrifugal plate 22 by accelerating tube 21a for the gas that gets into in the centrifugal plate 22 can obtain short-term acceleration effect, improves the centrifugal force of granule, and its collision is detained the effect better, and simultaneously, short-term acceleration gas can arouse the vibrations of filter plate 23 department when filter plate 23 department switching-over, helps dropping the granule of piling up of separation on filter plate 23.

In order to ensure the pre-filtering effect of the whole section of the filtering pipeline 2 in the filtering cavity 13, the initial inner diameter of each accelerating tube 21a gradually decreases from left to right, and the initial inner diameter decreases gradually and is designed according to the following mode: the inlet cross-section of the acceleration tube 21a is the same as the outlet cross-section of the immediately preceding adjacent acceleration tube 21 a. Therefore, the airflow is gradually decreased due to the influence of the resistance in the pipe, and the corresponding small-caliber accelerating effect is arranged at the accelerating pipe 21a of each stage, so that the fluid accelerating effect of each stage can be improved, and the centrifugal retention effect of the fluid can be guaranteed.

The present invention also needs to clean the device periodically, the abutting surface of the edge of the centrifugal plate 22 and the connecting pipe 21 is connected by adopting a mode of matching the convex frame and the concave groove, and the centrifugal plate 22 can be drawn up and down, so that the particles accumulated in the centrifugal plate 22 can be cleaned, and simultaneously, after the centrifugal plate 22 is drawn out, the filter screen plate 23 can be cleaned.

In order to prevent the air flow in the pretreatment tank 1 from generating turbulence, the ports of the air suction ports 5 extending into the exhaust cavity 14 are respectively arranged between the two air guide pipes 24, and the relative height of the ports of the air suction ports 5 is lower than that of the ports of the air guide pipes 24. The arrangement can prevent the gas from the air duct 24 from being directly sucked by the air suction opening 5, and prevent the air suction opening 5 from generating strong negative pressure in the air duct 24 to influence the filtering effect of the filter screen plate 23.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pre-filtering device of a gas purifier, comprising a pre-treatment tank (1), characterized in that: the inner chamber of preliminary treatment case (1) is decorated into bilateral symmetry' S air inlet chamber (11) and exhaust chamber (12), is located exhaust chamber (14) on preliminary treatment case (1) inner chamber top and is located filter chamber (13) of exhaust chamber (14) below by the baffle the inside of filter chamber (13) is equipped with filtering duct (2), filtering duct (2) are continuous S type coil pipe, both ends communicate respectively the inner chamber of air inlet chamber (11) and exhaust chamber (12) about filtering duct (2), the inner chamber of middle part return bend inner chamber intercommunication exhaust chamber (14) of filtering duct (2), air inlet chamber (11) inner bottom is equipped with air inlet (3), the inner bottom of exhaust chamber (12) is equipped with gas vent (4), the interior top of exhaust chamber (14) is equipped with extraction opening (5), filtering duct (2) are by connecting pipe (21), centrifugal plate (22), Filter screen board (23) and air duct (24) constitute, connecting pipe (21) are flat straight tube section, centrifuge plate (22) are the semicircle section that is located connecting pipe (21) outward flange, filter screen board (23) are the semicircle section that is located connecting pipe (21) inward flange, centrifuge plate (22) and the concentric circular arc section of filter screen board (23), and filter screen board (23) are the steel wire filter screen top just is located the top of filter screen board (23) on the inward flange of connecting pipe (21) is equipped with air duct (24), the inner chamber of exhaust chamber (14), the multiunit is let in on the top of air duct (24) filter duct (2) connect gradually as a whole.

2. The prefilter unit of a gas purifier as defined in claim 1, wherein: an accelerating tube (21a) is arranged at the tail end of the connecting tube (21) entering the centrifugal plate (22), and the accelerating tube (21a) is a variable section with the gradually-reduced section.

3. The prefilter unit of a gas purifier as defined in claim 2, wherein: the inlet section of the accelerating tube (21a) is the same as the outlet section of the last adjacent accelerating tube (21 a).

4. The prefilter unit of a gas purifier as defined in claim 1, wherein: the edge butt joint surfaces of the centrifugal plate (22) and the connecting pipe (21) are connected in a mode that a convex frame is matched with the notch groove.

5. The prefilter unit of a gas purifier as defined in claim 1, wherein: the port of the air pumping port (5) extending into the exhaust cavity (14) is respectively arranged between the two air guide pipes (24), and the relative height of the port of the air pumping port (5) is lower than that of the port of the air guide pipe (24).