Multi-stage filtering device for waste gas treatment

Abstract

The multi-stage filtering device comprises a gas inlet pipe, an electrostatic generator, a treatment tower, a filtering assembly, an adsorption assembly, a gas conveying pipe and a mixing cylinder, one end of the gas inlet cylinder communicates with the bottom end of the treatment tower, the electrostatic generator is arranged on the gas inlet cylinder, the two ends of the gas conveying pipe are connected with the treatment tower and the mixing cylinder correspondingly, and the filtering assembly is arranged on the gas conveying pipe. The filter assembly is arranged in the treatment tower and comprises a supporting plate and filter cartridges, the supporting plate is arranged in the treatment tower, a plurality of mounting openings are formed in the supporting plate, the filter cartridges are arranged in the mounting openings, the adsorption assembly is arranged in the treatment tower and located above the filter assembly, and the adsorption assembly comprises a mounting rod and an adsorption metal plate. The mounting rod is connected into the treatment tower, and the adsorption metal plate is arranged on the mounting rod. The waste gas dust treatment device has the effect of improving the waste gas dust treatment quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to a multi-stage filtering device for waste gas treatment. BACKGROUND

[0002] Waste gas purification mainly refers to the work of treating industrial waste gas such as dust particles, smoke dust, odor gas, toxic and harmful gas generated in industrial places. Common waste gas purification includes factory smoke waste gas purification, workshop dust waste gas purification, organic waste gas purification, waste gas odor purification, acid and alkali waste gas purification, and chemical waste gas purification.

[0003] At present, a filter screen is usually arranged in the waste gas treatment device. In the process of treating waste gas, the filter screen intercepts dust in the waste gas to reduce the content of dust.

[0004] For the above-mentioned related technology, the inventor believes that the pore size of the filter screen is limited in the process of purifying and treating waste gas by the above waste gas treatment device, and the filter screen cannot filter dust with small diameter. If a filter screen with small filter diameter is used, the filter screen is easy to be blocked during filtering, which requires frequent cleaning of the filter screen. Utility model content

[0005] In order to improve the quality of waste gas dust treatment, the present application provides a multi-stage filtering device for waste gas treatment.

[0006] The multi-stage filtering device for waste gas treatment provided by the present application adopts the following technical scheme:

[0007] A multi-stage filtering device for waste gas treatment, comprising an air inlet pipe, an electrostatic generator, a treatment tower, a filtering assembly, an adsorption assembly, a gas conveying pipe and a mixing cylinder, one end of the air inlet pipe is in communication with the bottom end of the treatment tower, the electrostatic generator is arranged on the air inlet pipe, the two ends of the gas conveying pipe are respectively in communication with the top end of the treatment tower and the bottom end of the mixing cylinder, the mixing cylinder is filled with treatment liquid, the filtering assembly is arranged in the treatment tower, the filtering assembly comprises a support plate and a filter cylinder, the support plate is arranged in the treatment tower, a plurality of installation holes are formed in the support plate, and one filter cylinder is arranged in each installation hole, the opening end of the filter cylinder is arranged downward, the adsorption assembly is arranged in the treatment tower and above the filtering assembly, the adsorption assembly comprises a mounting rod and an adsorption metal plate, the mounting rod is horizontally connected in the treatment tower, and a plurality of adsorption metal plates are vertically arranged on the mounting rod.

[0008] Through the above technical scheme, the waste gas enters the treatment tower through the air inlet pipe and the electrostatic generator. Under the action of the filter cylinder, preliminary filtration is performed, and part of the small-diameter dust with static electricity is adsorbed on the adsorption metal plate above the filter cylinder, so that secondary treatment of the waste gas dust is realized. The treated waste gas enters the mixing cylinder through the gas conveying pipe to react with the treatment liquid to remove harmful components therein. Through the cooperation of the air inlet pipe, the electrostatic generator, the treatment tower, the filter assembly, the adsorption assembly, the gas conveying pipe and the mixing cylinder, the effect of improving the waste gas dust treatment quality is achieved.

[0009] Optionally, a plurality of adsorption layers are horizontally arranged in the treatment tower, the adsorption layers are arranged above the adsorption assembly, a reflux pipe is arranged at the top of the treatment tower in communication, the other end of the reflux pipe extends into the treatment tower and is located below the adsorption layer, a reflux valve is arranged on the reflux pipe, and a gas conveying valve is arranged on the gas conveying pipe.

[0010] Through the above technical scheme, the adsorption layer further purifies the waste gas. When the waste gas does not meet the treatment standard, the gas conveying valve is closed and the reflux valve is opened, so that the waste gas reenters the treatment tower through the reflux pipe for repeated treatment. When the treatment meets the standard, the gas conveying valve is opened, and the gas enters the mixing cylinder through the gas conveying pipe.

[0011] Optionally, a cleaning assembly is arranged in the treatment tower, the cleaning assembly comprises a cleaning frame, one cleaning frame is horizontally and slidingly arranged on each adsorption metal plate, and a driving member for driving the cleaning frame to move in the vertical direction is arranged in the treatment tower.

[0012] Through the above technical scheme, when the adsorption metal plate adsorbs a large amount of dust, the cleaning frame moves downward in the vertical direction under the driving action of the driving member to scrape off the dust on the adsorption metal plate, so that the adsorption metal plate is cleaned.

[0013] Optionally, the inside of the cleaning frame is hollow, a communication pipe is connected in communication between two adjacent cleaning frames, a plurality of dust blowing nozzles are arranged in communication at the bottom end of the cleaning frame, the dust blowing nozzles are arranged towards the adsorption metal plate, a connecting hose is connected in communication on one of the cleaning frames, and a cleaning fan is arranged in communication at the other end of the connecting hose.

[0014] Through the above technical scheme, while the dust is scraped off, the cleaning fan is started to blow off the dust on the adsorption metal plate through the connecting hose and the dust blowing nozzles.

[0015] Optionally, a rotating rod is horizontally arranged in the mixing cylinder, a vertical stirring rod is vertically arranged at each end of the rotating rod, a plurality of horizontal stirring rods are horizontally arranged on the vertical stirring rod, and a driving member for driving the rotating rod to rotate is arranged on the mixing cylinder.

[0016] By adopting the technical scheme, the vertical stirring rod and the transverse stirring rod stir the treatment liquid, so that the treatment liquid can be fully mixed with the gas for reaction, and the treatment effect of the device on the waste gas is improved.

[0017] Optionally, an outer ring wall of the open end of the filter cartridge is provided with external threads, the open end of the filter cartridge is threadedly connected to an inner ring wall of the mounting port, and the support plate is detachably connected to the treatment tower.

[0018] By adopting the technical scheme, the support plate and the filter cartridge are detachably connected, so that the operator can conveniently take down the filter cartridge for cleaning.

[0019] Optionally, the treatment tower comprises a first connecting cylinder and a second connecting cylinder which are communicatively arranged, the filter assembly and the adsorption assembly are arranged in the second connecting cylinder, the adsorption layer is arranged in the first connecting cylinder, and the first connecting cylinder and the second connecting cylinder are detachably connected.

[0020] By adopting the technical scheme, since the first connecting cylinder and the second connecting cylinder are detachably connected, the operator can conveniently maintain and clean the structures therein.

[0021] Optionally, the vertical side wall of the first connecting cylinder is provided with a plug-in port, a sliding door plate is slidably arranged on the first connecting cylinder in the vertical direction, and a supporting tray is slidably arranged in the plug-in port, the supporting tray being located between the adsorption assembly and the filter assembly.

[0022] By adopting the technical scheme, the arrangement of the supporting tray avoids dust from falling on the filter cartridge to affect normal filtration.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. By cooperation of the air inlet pipe, the electrostatic generator, the treatment tower, the filter assembly, the adsorption assembly, the gas conveying pipe and the mixing cylinder, the quality of waste gas dust treatment is improved.

[0025] 2. The vertical stirring rod and the transverse stirring rod stir the treatment liquid, so that the treatment liquid can be fully mixed with the gas for reaction, and the treatment effect of the device on the waste gas is improved.

[0026] 3. The arrangement of the supporting tray avoids dust from falling on the filter cartridge to affect normal filtration. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic view of a multi-stage filter device for waste gas treatment according to an embodiment of the present application.

[0028] Figure 2 is a partial sectional view for embodying the internal structure of the processing tower in the embodiment of the present application.

[0029] Figure 3 is Figure 2 is an enlarged view of part A in

[0030] Figure 4 is Figure 2 is an enlarged view of part B in

[0031] BRIEF DESCRIPTION OF DRAWINGS 1, processing tower; 101, first connecting cylinder; 102, second connecting cylinder; 103, bottom cover; 104, insertion port; 105, sliding door plate; 2, filtering assembly; 21, support plate; 22, filtering cylinder; 23, connecting ring; 24, mounting port; 3, adsorbing assembly; 31, mounting rod; 32, mounting block; 33, adsorbing metal plate; 34, insertion slot; 4, cleaning assembly; 41, cleaning frame; 42, dust blowing nozzle; 43, communication pipe; 44, connecting hose; 45, sliding frame; 46, cleaning fan; 5, mixing assembly; 51, mixing cylinder; 52, stirring motor; 53, rotating rod; 54, vertical stirring rod; 55, horizontal stirring rod; 6, air inlet pipe; 7, electrostatic generator; 8, air inlet valve; 9, supporting tray; 10, supporting rod; 11, adsorbing layer; 12, backflow pipe; 13, air conveying pipe; 14, backflow branch pipe; 15, backflow valve; 16, backflow air pump; 17, electrochemical sensor; 18, air conveying valve; 19, liquid inlet pipe; 20, air outlet pipe; 25, liquid inlet valve; 26, air outlet valve; 27, liquid outlet pipe; 28, liquid outlet valve. DETAILED DESCRIPTION

[0032] The following will be described in detail in combination with the accompanying Figures 1-4 The present application is further described in detail. The embodiment of the present application provides a multi-stage filtering device for waste gas treatment, which has the effect of improving the waste gas dust treatment quality.

[0033] Referring to Figure 1 and Figure 2 , a multi-stage filtering device for waste gas treatment includes a processing tower 1, a filtering assembly 2, an adsorbing assembly 3, a cleaning assembly 4, and a mixing assembly 5. The processing tower 1 includes a first connecting cylinder 101 at the upper end and a second connecting cylinder 102 at the lower end, and the first connecting cylinder 101 is detachably connected with the second connecting cylinder 102. The bottom end of the second connecting cylinder 102 is detachably connected with a bottom cover 103. The bottom end of the second connecting cylinder 102 is connected in communication with an air inlet pipe 6, the air inlet pipe 6 is provided with an electrostatic generator 7, the air inlet pipe 6 is provided with an air inlet valve 8, and the air inlet valve 8 is arranged on the pipe section of the air inlet pipe 6 away from the second connecting cylinder 102.

[0034] Referring to Figure 2The filter assembly 2 is arranged in the second connecting cylinder 102, and comprises a support plate 21, filter cylinders 22 and a connecting ring 23. The connecting ring 23 is horizontally fixedly connected to the inner ring wall of the second connecting cylinder 102, the support plate 21 is horizontally arranged in the second connecting cylinder 102 and in contact with the bottom surface of the connecting ring 23, and the connecting ring 23 is detachably connected to the support plate 21 through bolts. A plurality of mounting holes 24 are formed in the support plate 21, and the inner ring wall of each mounting hole 24 is provided with an internal thread. One filter cylinder 22 is arranged in each mounting hole 24, and the bottom end of the filter cylinder 22 is arranged in an open manner. An external thread is arranged on the outer ring wall of the open end of the filter cylinder 22, and the open end of the filter cylinder 22 is threadedly connected to the inner ring wall of the mounting hole 24.

[0035] With reference to Figure 2 and Figure 3 The adsorption assembly 3 is arranged in the second connecting cylinder 102 and above the filter assembly 2, and comprises mounting rods 31, mounting blocks 32 and adsorption metal plates 33. Two mounting rods 31 are parallelly connected between the opposite inner walls of the second connecting cylinder 102, and a plurality of mounting blocks 32 are arranged on the top surface of each mounting rod 31. An insertion slot 34 is arranged on the top surface of each mounting block 32, and a plurality of insertion slots 34 are parallelly arranged. One adsorption metal plate 33 is vertically inserted into each insertion slot 34 of each mounting block 32, and a plurality of adsorption metal plates 33 are connected to an electric power device (not shown in the drawings).

[0036] With reference to Figure 2 and Figure 3 The cleaning assembly 4 is arranged on the second connecting cylinder 102, and comprises cleaning frames 41, dust blowing nozzles 42, communication pipes 43, connecting hoses 44, sliding frames 45 and a cleaning fan 46. One cleaning frame 41 is horizontally slidably arranged on each adsorption metal plate 33, the inside of the cleaning frame 41 is hollow, and two communication pipes 43 are in communication between adjacent two cleaning frames 41. A plurality of dust blowing nozzles 42 are circumferentially arranged in communication on the bottom surface of the cleaning frame 41, and the open end of the dust blowing nozzle 42 faces the adsorption metal plate 33. One end of the connecting hose 44 is in communication with one of the cleaning frames 41, and the other end of the connecting hose 44 extends out of the second connecting cylinder 102 and is in communication with the cleaning fan 46. A sliding ring is connected to one of the cleaning frames 41, and a driving member for driving the sliding frame 45 to move in the vertical direction is arranged in the second connecting cylinder 102. The driving member adopted in the embodiment of the application is a motor and a lead screw.

[0037] With reference to Figure 1 and Figure 2The vertical side wall of the second connecting cylinder 102 is provided with a plug-in port 104, and a sliding door plate 105 for shielding the plug-in port 104 is vertically slidably arranged on the vertical side wall of the second connecting cylinder 102. The plug-in port 104 is located between the filter assembly 2 and the adsorption assembly 3. A supporting tray 9 is horizontally slidably arranged in the plug-in port 104, and a supporting rod 10 for supporting the supporting tray 9 is connected to the vertical inner wall of the second connecting cylinder 102.

[0038] With reference to Figure 2 The first connecting cylinder 101 is provided with a plurality of adsorption layers 11. In this application, the adsorption layers 11 are sequentially arranged from bottom to top as an activated carbon layer, a molecular sieve layer, and a high polymer adsorption resin layer. The top end of the first connecting cylinder 101 is connected with a backflow pipe 12 and a gas conveying pipe 13. The other end of the backflow pipe 12 extends into the first connecting cylinder 101 and is located below the adsorption layers 11 and is provided with a plurality of backflow branch pipes 14. The backflow branch pipes 14 are upwardly arranged, and the backflow pipe 12 is provided with a backflow valve 15 and a backflow air pump 16. An electrochemical sensor 17 is arranged on the first connecting cylinder 101, and a gas conveying valve 18 is arranged on the gas conveying pipe 13.

[0039] With reference to Figure 2 and Figure 4 The mixing assembly 5 includes a mixing cylinder 51, a stirring motor 52, a rotating rod 53, vertical stirring rods 54, and horizontal stirring rods 55. The end of the gas conveying pipe 13 away from the first connecting cylinder 101 is connected with the bottom end of the mixing cylinder 51, and the stirring motor 52 is arranged at the top end of the mixing cylinder 51. The output shaft of the stirring motor 52 extends into the mixing cylinder 51 and is in transmission connection with the rotating rod 53. The rotating rod 53 is horizontally arranged, and two vertical stirring rods 54 are vertically connected to both ends of the rotating rod 53. A plurality of horizontal stirring rods 55 are horizontally connected to the vertical stirring rods 54. The top end of the mixing cylinder 51 is provided with a liquid inlet pipe 19 and a gas outlet pipe 20. The liquid inlet pipe 19 is provided with a liquid inlet valve 25, and the gas outlet pipe 20 is provided with a gas outlet valve 26. The bottom end of the mixing cylinder 51 is provided with a liquid outlet pipe 27, and the liquid outlet pipe 27 is provided with a liquid outlet valve 28.

[0040] With reference to Figure 1 and Figure 2 When the exhaust gas is treated, the exhaust gas enters the treatment tower 1 through the gas inlet pipe 6 and the electrostatic generator 7. The large-diameter dust in the exhaust gas is filtered by the filter cylinder 22. When it needs to be cleaned, the bottom cover 103 is opened and the filter cylinder 22 is removed. The exhaust gas that has been preliminarily filtered passes through the adsorption assembly 3. The small-diameter dust in the exhaust gas that has not been filtered has static electricity and is adsorbed on the adsorption metal plate 33, realizing secondary treatment of the dust in the exhaust gas.

[0041] With reference to Figure 2 and Figure 3When the dust on the adsorption metal plate 33 is too much, the sliding door plate 105 is opened and the supporting tray 9 is pushed into the second connecting cylinder 102. The driving member is used to drive the cleaning frames 41 to move downward to scrape the dust on the adsorption metal plate 33. At the same time, the cleaning fan 46 is started to blow the dust on the adsorption metal plate 33 to the supporting tray 9 through the connecting hose 44 and the dust blowing nozzle 42, so that the adsorption metal plate 33 is cleaned. Since the adsorption metal plate 33 is detachably connected with the mounting block 32, the operator can conveniently dismount and replace the adsorption metal plate 33.

[0042] With reference to Figure 2 The waste gas treated twice is passed through the adsorption layers 11, and the electrochemical sensor 17 at the top end of the treatment tower 1 detects the treatment quality of the waste gas. When the filtering effect is not up to the standard, the backflow pump 16 and the backflow valve 15 are opened, and the gas conveying valve 18 is closed. The waste gas is flowed back to the first connecting cylinder 101 through the backflow pipe 12 for repeated filtering treatment. When the waste gas treatment reaches the standard, the gas conveying valve 18 is opened, and the gas is passed through the gas conveying pipe 13 into the mixing cylinder 51 and mixed with the treatment liquid.

[0043] With reference to Figure 2 and Figure 3 The stirring motor 52 drives the rotating rod 53, the vertical stirring rod 54 and the transverse stirring rod 55 to rotate, so that the treatment liquid is stirred, the gas is fully reacted with the treatment liquid, and finally the gas valve 26 is opened to discharge the treated gas through the gas outlet pipe 20.

[0044] The implementation principle of the multi-stage filtering device for waste gas treatment in the embodiment of the application is as follows: when the waste gas is treated, the waste gas is passed through the gas inlet pipe 6 and the electrostatic generator 7 into the treatment tower 1, and the large-diameter dust in the waste gas is filtered by the filtering cylinder 22. The waste gas passes through the adsorption assembly 3, and the small-diameter dust in the waste gas is adsorbed on the adsorption metal plate 33.

[0045] The waste gas treated twice is passed through the adsorption layers 11, and the electrochemical sensor 17 at the top end of the treatment tower 1 detects the treatment quality of the waste gas. When the filtering effect is not up to the standard, the waste gas is flowed back to the first connecting cylinder 101 through the backflow pipe 12 for repeated filtering treatment. When the waste gas treatment reaches the standard, the gas is passed through the gas conveying pipe 13 into the mixing cylinder 51 and mixed with the treatment liquid.

[0046] The above are the preferred embodiments of the application, which do not limit the protection scope of the application. Any equivalent changes made on the basis of the structure, shape and principle of the application should be covered by the protection scope of the application.

Claims

1. A multi-stage filtration device for waste gas treatment, characterized in that: The system includes an air inlet pipe (6), an electrostatic generator (7), a treatment tower (1), a filter assembly (2), an adsorption assembly (3), a gas delivery pipe (13), and a mixing cylinder (51). One end of the air inlet pipe is connected to the bottom end of the treatment tower (1). The electrostatic generator (7) is mounted on the air inlet pipe. Both ends of the gas delivery pipe (13) are connected to the top end of the treatment tower (1) and the bottom end of the mixing cylinder (51), respectively. The mixing cylinder (51) is filled with treatment liquid. The filter assembly (2) is located in the treatment tower (1). The filter assembly (2) includes a support plate (21) and a filter cylinder (22). The support plate (21) is disposed in the processing tower (1). The support plate (21) has several installation ports (24). Each installation port (24) is provided with a filter cylinder (22). The opening end of the filter cylinder (22) is set downward. The adsorption assembly (3) is disposed in the processing tower (1) and located above the filter assembly (2). The adsorption assembly (3) includes an installation rod (31) and an adsorption metal plate (33). The installation rod (31) is horizontally connected to the processing tower (1). Several adsorption metal plates (33) are vertically arranged on the installation rod (31).

2. The multi-stage filtration device for waste gas treatment according to claim 1, characterized in that: The processing tower (1) has several adsorption layers (11) arranged horizontally. The adsorption layers (11) are arranged above the adsorption assembly (3). The top of the processing tower (1) is connected to a reflux pipe (12). The other end of the reflux pipe (12) extends into the processing tower (1) and is located below the adsorption layers (11). A reflux valve (15) is provided on the reflux pipe (12). A gas supply valve (18) is provided on the gas supply pipe (13).

3. A multi-stage filtration device for waste gas treatment according to claim 1, characterized in that: The processing tower (1) is provided with a cleaning component (4), which includes a cleaning frame (41). Each cleaning frame (41) is horizontally slidably sleeved on each of the adsorption metal plates (33). The processing tower (1) is provided with a driving component for driving the cleaning frame (41) to move in the vertical direction.

4. A multi-stage filtration device for waste gas treatment according to claim 3, characterized in that: The interior of the cleaning frame (41) is hollow. A connecting pipe (43) connects two adjacent cleaning frames (41). Several dust blowing nozzles (42) are connected to the bottom of the cleaning frame (41). The dust blowing nozzles (42) are facing the adsorption metal plate (33). A connecting hose (44) is connected to one of the cleaning frames (41). A cleaning fan (46) is connected to the other end of the connecting hose (44).

5. A multi-stage filtration device for waste gas treatment according to claim 1, characterized in that: A rotating rod (53) is horizontally rotatably arranged in the mixing cylinder (51). A vertical stirring rod (54) is vertically arranged at both ends of the rotating rod (53). Several horizontal stirring rods (55) are horizontally arranged on the vertical stirring rods (54). A driving component for driving the rotating rod (53) to rotate is provided on the mixing cylinder (51).

6. A multi-stage filtration device for waste gas treatment according to claim 1, characterized in that: The filter cylinder (22) has an external thread on the outer ring wall of the opening end, and the opening end of the filter cylinder (22) is threaded to the inner ring wall of the mounting port (24). The support plate (21) is detachably connected to the treatment tower (1).

7. A multi-stage filtration device for waste gas treatment according to claim 2, characterized in that: The processing tower (1) includes a first connecting cylinder (101) and a second connecting cylinder (102) connected in a manner. The filter assembly (2) and the adsorption assembly (3) are both disposed in the second connecting cylinder (102). The adsorption layer (11) is disposed in the first connecting cylinder (101). The first connecting cylinder (101) and the second connecting cylinder (102) are detachably connected.

8. A multi-stage filtration device for waste gas treatment according to claim 7, characterized in that: An insertion port (104) is provided on the vertical side wall of the first connecting cylinder (101), and a sliding door plate (105) is slidably provided on the first connecting cylinder (101) along the vertical direction. A support tray (9) is slidably inserted into the insertion port (104), and the support tray (9) is located between the adsorption component (3) and the filter component (2).

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