Laser cutting waste gas treatment system and process based on electric energy metering box production

Abstract

The invention relates to the technical field of waste gas treatment, and discloses a laser cutting waste gas treatment system and process based on electric energy metering box production, and the laser cutting waste gas treatment system based on electric energy metering box production comprises a filter cartridge dust remover main body and a treatment box communicated with the top surface of the filter cartridge dust remover main body, a bottom plate is fixedly connected to the lower end in the treatment box, an annular filter part is rotationally connected between the top surface of the bottom plate and the treatment box, a conical cover is fixedly connected in the annular filter part, and a cleaning assembly is fixedly connected to the top surface of the bottom plate. After waste gas enters the treatment box, large-particle metal chippings can be preliminarily intercepted through the cooperation of the conical cover and the annular filter part, and the intercepted large-particle metal chippings are directly discharged to a dust stacking area of the filter cartridge dust remover main body through the cooperation of the dust collection barrel and the cleaning assembly; therefore, the filter material is prevented from being damaged and blocked by metal scraps, the service life of the filter material is prolonged, and the equipment shutdown frequency and the filter material cleaning frequency are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, and particularly relates to a laser cutting waste gas treatment system and process based on electric energy metering box production. BACKGROUND

[0002] In the production of electric energy metering boxes, laser cutting is the core process for realizing high-precision processing of metal plates, but the processing process is accompanied by waste gas emission. That is, when cutting metal, high temperature causes local melting and oxidation of the material, generating dust particles containing metal oxides. If the waste gas is directly discharged, it not only pollutes the atmospheric environment, but also endangers the health of workshop operators.

[0003] The laser cutting waste gas treatment system is a whole-process management from source pollution control to end purification, which achieves the dual goals of environmental protection and occupational health while ensuring production precision. The waste gas treatment system mainly includes waste gas capture, waste gas purification and gas purification. Among them, the filter cartridge dust collector is the preferred and standard configuration in the current waste gas purification link. Dust-containing waste gas enters the dust collector and passes through the folded filter cartridge made of high-efficiency filter material (such as polyester non-woven fabric). Particulate matter is blocked on the surface of the filter cartridge, and clean air passes through and is discharged.

[0004] However, different sizes of metal particles are generated during the laser cutting process of metal plates. Larger particles directly impact the filter material surface with airflow, which will continuously rub with the filter material. On the one hand, it is easy to damage the PTFE film on the surface of the filter material. Once the film is worn out, the high-efficiency filtering characteristics will be lost, resulting in a sharp decline in filtering efficiency. On the other hand, a large amount of static electricity is easily generated, and the electrostatic force will attract dust, accelerating the clogging speed of the filter material, increasing the downtime maintenance market, and making it more difficult to clean the dust afterwards. SUMMARY

[0005] In view of the problems of existing technologies that large particle metal debris damages the PTFE film of the filter material and accelerates the clogging of the filter material, a laser cutting waste gas treatment system based on electric energy metering box production is proposed.

[0006] The purpose is to set an interception mechanism at the air inlet of the filter cartridge dust collector, to preferentially intercept and filter large particle metal debris, and to directly discharge it to the dust storage area of the filter cartridge dust collector, thereby reducing the filtering pressure of the filter material and reducing the damage to the filter material.

[0007] The technical scheme of the present application is a kind of laser cutting waste gas treatment system based on electric energy metering box production, including filter cartridge dust collector main body, the top surface of filter cartridge dust collector main body is open, still including the processing box being communicated with the top surface of filter cartridge dust collector main body, the top surface of processing box is communicated with inlet pipe, the bottom plate is fixedly connected in processing box lower end, the top surface of bottom plate and processing box are rotatably connected with annular filter element, the conical cover is fixedly connected in annular filter element, the bottom surface of conical cover is rotatably connected with bottom plate, the top surface of bottom plate is fixedly connected with cleaning assembly, and the cleaning assembly is used to clean the inner wall of annular filter element, the surface of conical cover;

[0008] The cleaning assembly is provided with a dust suction cylinder rotatably connected with the bottom plate below, a plurality of dust suction holes are formed in the top surface of the dust suction cylinder and the position corresponding to the top surface of the bottom plate, a motor is fixedly installed on the outer wall of the processing box, the motor is in transmission connection with the dust suction cylinder, a transmission member is jointly connected between the dust suction cylinder and the annular filter element, and the lower end of the dust suction cylinder extends into the filter cartridge dust collector main body and is fixedly connected with a negative pressure pipe, a negative pressure hole is formed in the side wall of the negative pressure pipe, and the lower end of the negative pressure pipe is fixedly connected with a dust discharge pipe, and the lower end of the dust discharge pipe extends above the dust stacking area of the filter cartridge dust collector main body.

[0009] Further, the annular filter element includes a filter ring sintered from metal powder, and the upper and lower ends of the filter ring are fixedly connected with fixing rings, the upper fixing ring is rotatably connected with the processing box, and the lower fixing ring is rotatably connected with the bottom plate.

[0010] Further, the cleaning assembly includes a protective cover fixedly connected with the bottom plate, the opening side of the protective cover is arranged towards the inner wall of the filter ring, a first cleaning brush is fixedly connected in the protective cover, the first cleaning brush is in frictional contact with the inner side of the annular filter element, a second cleaning brush is fixedly connected on the side of the protective cover facing the conical cover, and the second cleaning brush is in frictional contact with the conical cover.

[0011] Further, an arc-shaped plate is arranged on the outer side of the annular filter element, the arc-shaped plate is fixedly connected with the bottom plate, and the arc-shaped plate is arranged corresponding to the protective cover.

[0012] Further, the transmission member includes an outer gear ring fixedly sleeved on the outer wall of the dust suction cylinder, and an inner gear ring fixedly connected on the inner wall of the lower fixing ring, and the outer gear ring is in meshing connection with the inner gear ring.

[0013] Further, a supporting ring is rotatably sleeved on the outer wall of the negative pressure pipe, the supporting ring is fixedly connected with the inner wall of the filter cartridge dust collector main body, and a through hole is formed in the supporting ring and matched with the negative pressure hole.

[0014] The diameter of the negative pressure pipe is greater than the diameters of the dust suction cylinder and the dust discharge pipe.

[0015] Further, the lower end of the protective cover is provided with an opening, and the lower end of the protective cover is fixedly connected with a triangular block on one side of the inner wall of the annular filter, and the lower end of the protective cover is hingedly connected with a baffle, and the baffle is in abutting engagement with the inclined surface of the triangular block and the inner wall of the protective cover at both ends, respectively.

[0016] The upper end of the dust suction cylinder is vertically and slidingly connected with a top rod, the top rod is arranged on the lower side of the baffle, and an annular plate is fixedly connected to the top rod, an arc-shaped strip is fixedly connected to the inner side of the fixed ring on the lower side, and an inclined surface is formed at one end of the arc-shaped strip.

[0017] Further, a scraper is slidingly sleeved on the top rod, and the scraper is in frictional contact with the top surface of the bottom plate.

[0018] Another object of the present application is to provide a laser cutting waste gas treatment process based on electric energy metering box production, which aims to preferentially filter large particle metal debris in waste gas, avoid accelerated wear and blockage of subsequent filter materials, and improve filtering effect and efficiency.

[0019] To achieve the above object, the present application provides the following technical scheme: a laser cutting waste gas treatment process based on electric energy metering box production, comprising the following steps:

[0020] S1, waste gas trapping: when the metal plate of the laser cutting electric energy metering box is cut, the negative pressure equipment generates negative pressure in the trapping cover, and the metal dust waste gas generated during cutting is transported to the treatment box, and an airflow stabilizer is arranged in the pipeline to adjust the airflow speed to keep stable;

[0021] S2, waste gas purification: large particle hot metal debris is intercepted by the annular filter, and the large particle hot metal debris intercepted by the cleaning assembly is directly transported to the dust stacking area of the filter cartridge dust collector main body through the dust suction cylinder, and the fine dust passes through the annular filter and enters the filter cartridge dust collector main body, and the non-woven fabric filter bag filters the fine dust, and then the exhaust gas is discharged;

[0022] S3, deep purification: the waste gas after filtering dust passes through the adsorption bed filled with a large amount of activated carbon, adsorbs organic molecules and part of ozone in the waste gas, and then further decomposes the organic waste gas through photo-oxidation catalysis or catalytic combustion equipment;

[0023] S4, the clean gas is transported to the online monitoring device through the pipeline, the particle concentration is detected in real time, and after the monitoring is qualified, the gas is discharged into the atmosphere.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] 1. After the exhaust gas enters the treatment box, the large particle metal debris can be preliminarily intercepted through the cooperation of the conical cover and the annular filter, and the intercepted large particle metal debris is directly discharged to the dust stacking area of the filter cartridge dust collector body through the cooperation of the dust collection cylinder and the cleaning assembly, so that the damage and blockage of the filter material caused by the metal debris are avoided, the service life of the filter material is prolonged, and the equipment downtime frequency and the filter material cleaning frequency are reduced.

[0026] 2. The baffle cooperates with the triangular block to close the lower port of the protective cover, so that the interior of the protective cover is not affected by the airflow, the cleaning effect of the cleaning brush and the pair of filter rings is improved, and the arc-shaped strip cooperates with the annular plate to realize timed and quantitative release of the debris, so that the debris can accurately fall near the bottom plate dust suction hole, and the subsequent dust suction efficiency is improved.

[0027] 3. The scraper rotates synchronously with the top rod to realize active collection of the debris on the surface of the bottom plate, which solves the problem of dust suction omission caused by scattered debris and improves the coverage range and suction efficiency of the dust collection cylinder in single dust suction operation. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic view of the overall structure of the laser cutting exhaust gas treatment system based on the electric energy metering box production of the application;

[0029] Figure 2 It is a schematic view of the bottom structure of the treatment box of the laser cutting exhaust gas treatment system based on the electric energy metering box production of the application;

[0030] Figure 3 It is a schematic view of the internal structure of the treatment box of the laser cutting exhaust gas treatment system based on the electric energy metering box production of the application;

[0031] Figure 4 It is a schematic view of the bottom plate, annular filter and conical cover structure of the laser cutting exhaust gas treatment system based on the electric energy metering box production of the application;

[0032] Figure 5 It is a schematic view of the cleaning assembly and annular filter structure of the laser cutting exhaust gas treatment system based on the electric energy metering box production of the application;

[0033] Figure 6 It is a schematic view of the support ring and negative pressure pipe structure of the laser cutting exhaust gas treatment system based on the electric energy metering box production of the application;

[0034] Figure 7 It is a schematic view of the dust collection cylinder and top rod structure of the laser cutting exhaust gas treatment system based on the electric energy metering box production of the application;

[0035] Figure 8 It is a schematic view of the motor and dust collection cylinder structure of the laser cutting exhaust gas treatment system based on the electric energy metering box production of the application.

[0036] In the drawings:

[0037] 1, filter cartridge dust collector main body; 2, processing box; 3, air inlet pipe; 4, bottom plate; 5, annular filter; 51, filter ring; 52, fixed ring; 6, conical cover; 7, cleaning assembly; 71, protective cover; 72, cleaning brush one; 73, cleaning brush two; 8, arc plate; 9, motor; 10, dust suction cylinder; 11, outer gear ring; 12, inner gear ring; 13, negative pressure pipe; 14, support ring; 15, dust discharge pipe; 16, triangular block; 17, baffle; 18, top rod; 19, annular plate; 20, arc strip; 21, scraper. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0039] Example 1

[0040] Reference Figures 1-6 For the first embodiment of the present application, a laser cutting waste gas treatment system based on an electric energy metering box is provided, which comprises a filter cartridge dust collector main body 1, the top surface of the filter cartridge dust collector main body 1 is provided with an opening, and further comprises a processing box 2 in communication with the top surface of the filter cartridge dust collector main body 1, the top surface of the processing box 2 is communicated with an air inlet pipe 3, the inner lower end of the processing box 2 is fixedly connected with a bottom plate 4, the top surface of the bottom plate 4 is rotatably connected with an annular filter 5 together with the processing box 2, the annular filter 5 is fixedly connected with a conical cover 6, the bottom surface of the conical cover 6 is rotatably connected with the bottom plate 4, the top surface of the bottom plate 4 is fixedly connected with a cleaning assembly 7, the cleaning assembly 7 is used for cleaning the inner wall of the annular filter 5 and the surface of the conical cover 6; a dust suction cylinder 10 is arranged below the cleaning assembly 7 and rotatably connected with the bottom plate 4, a plurality of dust suction holes are formed in the top surface of the dust suction cylinder 10 and the position corresponding to the top surface of the dust suction cylinder 10 on the bottom plate 4, a motor 9 is fixedly installed on the outer wall of the processing box 2, the motor 9 is in transmission connection with the dust suction cylinder 10, a transmission member is connected between the dust suction cylinder 10 and the annular filter 5, the lower end of the dust suction cylinder 10 extends into the filter cartridge dust collector main body 1 and is fixedly connected with a negative pressure pipe 13, a negative pressure hole is formed in the side wall of the negative pressure pipe 13, the lower end of the negative pressure pipe 13 is fixedly connected with a dust discharge pipe 15, and the lower end of the dust discharge pipe 15 extends above the dust storage area of the filter cartridge dust collector main body 1.

[0041] Specifically, the exhaust gas generated during laser cutting is captured and enters the processing box 2 through the air inlet pipe 3. Under the action of the conical cover 6, the exhaust gas is diffused in a ring shape. A part of the large particle debris directly falls on the conical cover 6, and the other part is intercepted by the inner side of the annular filter 5. The fine particles pass through to the outside of the annular filter 5 and then enter the filter cartridge dust collector main body 1. The filter material in the filter cartridge dust collector main body 1 further filters the fine dust. When the motor 9 drives the dust suction cylinder 10 to rotate, the dust suction cylinder 10 drives the annular filter 5 and the conical cover 6 to rotate synchronously through the transmission member. The cleaning assembly 7 sweeps the particle debris on the inner wall of the annular filter 5 and the particle debris on the conical cover 6. Then, the negative pressure generated in the filter cartridge dust collector main body 1 acts on the inside of the dust suction cylinder 10 through the negative pressure pipe 13. When the dust suction hole of the dust suction cylinder 10 coincides with the dust suction hole of the bottom plate 4, the suction force transports the debris into the dust suction cylinder 10 and then to the dust storage area at the bottom of the filter cartridge dust collector main body 1 through the dust discharge pipe 15. The system is designed with multi-stage filtration and synchronous cleaning and dust discharge. It not only improves the filtration efficiency of particles of different sizes in the exhaust gas, reduces damage and blockage of the filter material, prolongs the service life of the filter material, and reduces the downtime of the equipment, but also avoids the influence of debris accumulation on the ventilation and filtration effect of the annular filter 5 and the conical cover 6. At the same time, it realizes centralized collection and treatment of debris, reduces the frequency of equipment maintenance, and ensures long-term stable operation of the system.

[0042] Understandably, since the internal cross-sectional area of the annular filter 5 is larger than the cross-sectional area of the air inlet pipe 3, the flow rate of the gas flow decreases after entering the annular filter 5, thereby reducing the drag force of the gas flow on the metal particle debris. The metal particle debris falls on the surface of the conical cover 6 under the action of gravity.

[0043] Referring to Figure 4 The annular filter 5 includes a filter ring 51 sintered from metal powder. The upper and lower ends of the filter ring 51 are fixedly connected with fixed rings 52. The upper fixed ring 52 is rotatably connected with the processing box 2, and the lower fixed ring 52 is rotatably connected with the bottom plate 4.

[0044] Specifically, the filter holes of the filter ring 51 are larger than those of the filter material. Fine dust can follow the gas flow through the filter holes of the filter ring 51, while large particle debris is intercepted on the inner side of the filter ring 51. The filter ring 51 is sintered from metal powder and is smoothly treated on the inner and outer sides, has high mechanical strength, high hardness, and sharp edges. The metal debris and the cleaning assembly 7 are difficult to cause damage to it.

[0045] Understandably, the sintered metal filter material performs surface filtration through its precisely controlled micropores. Dust particles are mainly intercepted on the surface of the filter material rather than entering the inside, which enables the cooperation with the cleaning assembly 7 to effectively clean the intercepted debris. At the same time, the filter ring 51 itself is metal, which means that it is completely non-combustible and can directly withstand the high-temperature sparks and hot particles sucked in during the laser cutting process, fundamentally eliminating the risk of ignition of the filter core itself.

[0046] Referring to Figure 3 , Figure 5 , the cleaning assembly 7 comprises a protective cover 71 fixedly connected with the bottom plate 4, the opening side of the protective cover 71 is arranged towards the inner wall of the filter ring 51, a cleaning brush I 72 is fixedly connected in the protective cover 71, the cleaning brush I 72 is in frictional contact with the inner side of the annular filter 5, and a cleaning brush II 73 is fixedly connected on the side of the protective cover 71 towards the conical cover 6, and the cleaning brush II 73 is in frictional contact with the conical cover 6.

[0047] Specifically, the protective cover 71 can effectively shield the working area of the cleaning brush I 72, and by reducing the airflow speed in this area, it can avoid the formation of firm adsorption of particles and debris on the inner wall of the annular filter 5, and when the annular filter 5 and the conical cover 6 rotate synchronously under the driving of the transmission member, the cleaning brush I 72 can smoothly sweep the debris attached to the inner wall of the annular filter 5 to the inner bottom of the protective cover 71, and the cleaning brush II 73 can sweep the debris settled on the surface of the conical cover 6 to the lower side of the protective cover 71. This design not only improves the cleaning efficiency of the cleaning brush I 72 and the cleaning brush II 73 on the debris through the shielding and speed reduction effect of the protective cover 71, but also temporarily receives and guides the swept debris, avoiding the secondary pollution of the filtering area by the debris, further ensuring the filtering permeability of the annular filter 5 and the flow guiding effect of the conical cover 6, and reducing the dust suction burden of the subsequent dust collection cylinder 10.

[0048] Specifically, the cleaning brush II 73 is arranged towards the lower side of the protective cover 71, the top of the conical cover 6 is connected with the upper fixed ring 52 through a connecting frame, and when the conical cover 6 rotates, the debris on the surface of the conical cover 6 falls around the dust suction hole of the bottom plate 4 under the interception of the cleaning brush II 73.

[0049] Referring to Figure 3 , Figure 5 , the outer side of the annular filter 5 is provided with an arc-shaped plate 8, the arc-shaped plate 8 is fixedly connected with the bottom plate 4, and the arc-shaped plate 8 is arranged corresponding to the protective cover 71.

[0050] Specifically, the side of the arc-shaped plate 8 towards the annular filter 5 is provided with an arc-shaped groove matched with the outer arc surface shape of the annular filter 5, and the arc-shaped groove and the outer wall of the annular filter 5 maintain a small gap. The core function of the arc-shaped plate 8 is to further reduce the suction effect in the area, and through this design, the suction force on the part of the annular filter 5 between the arc-shaped plate 8 and the protective cover 71 is greatly reduced, effectively avoiding the interference of the suction force on the cleaning action of the cleaning brush I 72, so that the cleaning brush I 72 can more fully contact and scrape off the debris on the inner wall of the annular filter 5, significantly improving the cleaning effect of the cleaning brush I 72 on the annular filter 5. At the same time, the setting of the small gap does not affect the normal rotation of the annular filter 5, and can accurately control the range of suction force reduction, ensuring the stability of the filtering and dust suction functions in other areas of the system.

[0051] Referring to Figure 4 , Figure 8 The transmission member comprises an outer tooth ring 11 fixedly sleeved on the outer wall of the dust suction cylinder 10 at the upper end, and an inner tooth ring 12 fixedly connected to the inner wall of the fixed ring 52 at the lower side, and the outer tooth ring 11 is in meshing connection with the inner tooth ring 12.

[0052] Specifically, when the motor 9 drives the dust suction cylinder 10 to rotate, the outer tooth ring 11 cooperates with the inner tooth ring 12 to drive the fixed ring 52 at the lower side, so that the annular filter member 5 and the conical cover 6 rotate.

[0053] The output end of the motor 9 and the outer wall of the dust suction cylinder 10 are fixedly connected with belt pulleys, and a belt is connected between the two belt pulleys and is movably penetrated through the processing box 2.

[0054] Embodiment 2

[0055] Referring to Figure 6 , Figure 7 The second embodiment of the application is different from the first embodiment in that the outer wall of the negative pressure pipe 13 is rotatably sleeved with a supporting ring 14, the supporting ring 14 is fixedly connected with the inner wall of the filter cartridge dust collector main body 1, and a through hole is formed in the supporting ring 14 and matched with the negative pressure hole; the diameter of the negative pressure pipe 13 is greater than that of the dust suction cylinder 10 and the dust discharge pipe 15.

[0056] Specifically, when the negative pressure pipe 13 rotates with the dust suction cylinder 10, the through hole formed in the supporting ring 14 coincides with the negative pressure hole in the side wall of the negative pressure pipe 13, the suction force in the filter cartridge dust collector main body 1 acts on the inside of the dust suction cylinder 10 through the through hole of the supporting ring 14 and the negative pressure hole of the negative pressure pipe 13, so that a negative pressure is formed in the inside of the dust suction cylinder 10; at this time, if the dust suction hole on the top surface of the dust suction cylinder 10 coincides with the dust suction hole on the bottom plate 4, the negative pressure can quickly adsorb the debris cleaned by the cleaning assembly 7 around the dust suction hole of the bottom plate 4, and after the debris is sucked into the dust suction cylinder 10, the supporting ring 14 and the negative pressure pipe 13 continue to rotate, the through hole of the supporting ring 14 and the negative pressure hole of the negative pressure pipe 13 gradually misalign, and the suction force stops.

[0057] The cooperation of the support ring 14 and the negative pressure pipe 13 generates intermittent suction in this way. When the suction is generated, the debris at the upper end of the dust collection cylinder 10 can be efficiently adsorbed. When the suction stops, the debris entering the dust collection cylinder 10 can move downward in a stable environment without suction interference, relying on its own gravity and the push of subsequent debris, through the dust discharge pipe 15 with a smaller diameter than the negative pressure pipe 13, and finally to the dust storage area of the filter cartridge dust collector main body 1. This design precisely controls the intermittent suction, avoids the accumulation of debris in the dust collection cylinder 10 caused by continuous suction, ensures the suction strength when the debris is adsorbed, improves the adsorption efficiency, and ensures the stable downward movement of the debris during transportation, reduces the jamming phenomenon, further optimizes the whole process from adsorption to centralized collection, and ensures the stable and reliable dust removal function of the system. The rest of the structure is the same as that of example 1.

[0058] Example 3

[0059] Referring to Figure 5 、 Figure 7 、 Figure 8 , the lower end of the protective cover 71 is provided with a triangular block 16 fixedly connected to one side of the inner wall of the annular filter 5, and a baffle 17 is hingedly connected to the lower end of the protective cover 71. The two ends of the baffle 17 are respectively in abutting cooperation with the inclined surface of the triangular block 16 and the inner wall of the protective cover 71. The upper end of the dust collection cylinder 10 is vertically and slidingly connected with a top rod 18, the top rod 18 is arranged on the lower side of the baffle 17, and the top rod 18 is fixedly connected with an annular plate 19. The inner side of the lower side fixed ring 52 is fixedly connected with an arc-shaped strip 20, and one end of the arc-shaped strip 20 is provided with an inclined surface.

[0060] Specifically, the baffle 17 cooperates with the triangular block 16 to block the lower end of the protective cover 71, effectively blocking the external airflow from entering the inside of the protective cover 71, avoiding the interference of the airflow with the cleaning work, so that the debris cleaned by the cleaning brush 72 can stably fall and temporarily store in the groove formed by the baffle 17 and the triangular block 16. When the arc-shaped strip 20 rotates to contact the annular plate 19 while following the fixed ring 52, it drives the top rod 18 to rise, and the top rod 18 drives the baffle 17 to rotate, and the left end of the baffle 17 rotates downward and separates from the triangular block 16. The debris accumulated in the protective cover 71 falls onto the bottom plate 4.

[0061] The linkage of the arc-shaped strip 20, the annular plate 19 and the top rod 18 realizes the timed and quantitative release of the debris, ensures that the debris can accurately fall near the dust suction hole of the bottom plate 4, improves the subsequent dust collection efficiency, further optimizes the coherent process of cleaning-temporarily storing-releasing-collecting, and ensures the efficient processing of the system on the debris.

[0062] Among them, referring to Figure 5The baffle 17 is in a bent structure, the baffle 17 is fixedly connected with a connecting shaft at the bent position, the connecting shaft is rotationally connected with the protective cover 71, and the distance from the connecting shaft to the left end of the baffle 17 is less than the distance from the connecting shaft to the right end of the baffle 17, the gravity of the right part of the baffle 17 is greater than that of the left part, when the baffle 17 is not subjected to external force, the right end of the baffle 17 abuts against the inner wall of the protective cover 71, and the left end is in contact with the inclined surface of the triangular block 16, the top rod 18 is lifted to be in contact with the right part of the baffle 17 to make the baffle 17 rotate clockwise, and the left end of the baffle 17 is rotated downward to form a gap with the triangular block 16.

[0063] With reference to Figure 7 The top rod 18 is slidingly sleeved with a scraper 21, and the scraper 21 is in frictional contact with the top surface of the bottom plate 4.

[0064] Specifically, when the top rod 18 rotates synchronously with the dust collection cylinder 10, the scraper 21 is driven to rotate together, the scraper 21 is designed in an arc structure, and in the rotating process, the arc surface can concentrate and scrape the debris scattered on the bottom plate 4 (especially the debris around the dust collection hole of the dust collection cylinder 10) to the direction of the top rod 18, so that the debris originally scattered on the surface of the bottom plate 4 is gathered to the area near the dust collection hole of the dust collection cylinder 10, so that when the dust collection hole of the dust collection cylinder 10 coincides with the dust collection hole of the bottom plate 4 and the negative pressure is generated, the concentrated debris can be more efficiently sucked and removed, avoiding the residual of part of the debris due to the dispersion of the debris.

[0065] Through the arc scraping and synchronous rotation of the scraper 21, the active collection of the debris on the surface of the bottom plate 4 is realized, which not only solves the problem of dust collection omission caused by the dispersion of the debris, but also improves the coverage range and the suction efficiency of the dust collection cylinder 10 in a single dust collection operation, further guarantees the debris cleaning effect of the bottom plate 4 area, and reduces the interference of dust residue on the subsequent filtering operation.

[0066] With reference to Figure 7 A plurality of grooves are formed in the surface of the top rod 18 in the axial direction, and the scraper 21 and the upper part of the dust collection cylinder 10 are slidingly matched with the grooves. The remaining structures are the same as those of the structure of the second embodiment.

[0067] In combination with Embodiment 1-3, the working principle of the present application is as follows: the laser cutting exhaust gas enters the processing box 2 through the inlet pipe 3 and is diffused in a ring shape under the guidance of the conical cover 6. Due to the airflow deceleration in the ring-shaped filter 5, large-particle debris falls to the conical cover 6, part of which is intercepted by the inner side of the filter ring 51, and fine dust passes through the filter ring 51 into the filter cartridge dust collector main body 1 and is deeply filtered by the internal filter material. The motor 9 drives the dust suction cylinder 10 to rotate, the outer gear ring 11 engages the inner gear ring 12, so that the ring-shaped filter 5 and the conical cover 6 rotate synchronously, and the cleaning brush one 72 and the cleaning brush two 73 clean the inner wall of the filter ring 51 and the conical cover 6 debris respectively. The debris in the protective cover 71 is temporarily stored in the groove of the baffle 17 and the triangular block 16, the arc strip 20 pushes the ejector rod 18 to open the baffle 17 to release the debris, and the scraper 21 rotates with the ejector rod 18 to collect the debris on the bottom plate 4. The intermittent negative pressure is generated by the cooperation of the negative pressure pipe 13 and the support ring 14, the dust suction hole of the dust suction cylinder 10 sucks the debris when the holes coincide, and the dust is discharged to the dust storage area through the dust discharge pipe 15, realizing efficient filtering and cleaning dust discharge.

[0068] Embodiment 4

[0069] Reference Figures 1-8 As the fourth embodiment of the present application, there is provided: a laser cutting exhaust gas treatment process based on an electric energy metering box production, comprising the following steps:

[0070] S1, waste gas collection: when the metal plate of the electric energy metering box is laser cut, the negative pressure equipment generates negative pressure in the collection cover, and the metal dust exhaust gas generated during cutting is transported to the processing box 2. A flow stabilizer is arranged in the pipeline to adjust the airflow speed to keep stable;

[0071] S2, waste gas purification: large-particle hot metal debris is intercepted by the ring-shaped filter 5, and the cleaning assembly 7 directly transports the intercepted large-particle hot metal debris to the dust storage area of the filter cartridge dust collector main body 1 through the dust suction cylinder 10. After the fine dust passes through the ring-shaped filter 5, it enters the filter cartridge dust collector main body 1, and the non-woven fabric filter bag filters the fine dust, and then discharges the exhaust gas;

[0072] S3, deep purification: the exhaust gas after filtering the dust passes through the adsorption bed filled with a large amount of activated carbon to adsorb organic molecules and part of ozone in the exhaust gas, and then further decomposes the organic exhaust gas through photo-oxidation catalysis or catalytic combustion equipment;

[0073] S4, clean gas is transported to the online monitoring device through the pipeline to detect the particulate matter concentration in real time. After the monitoring is qualified, the gas is discharged to the atmosphere.

[0074] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A laser cutting exhaust gas treatment system based on an electricity metering box, comprising a cartridge dust collector body (1), wherein the top surface of the cartridge dust collector body (1) is open, characterized in that, It also includes a processing box (2) that communicates with the top surface of the filter cartridge dust collector body (1). The top surface of the processing box (2) is connected to an air inlet pipe (3). A base plate (4) is fixedly connected to the lower end of the processing box (2). An annular filter element (5) is rotatably connected between the top surface of the base plate (4) and the processing box (2). A conical cover (6) is fixedly connected inside the annular filter element (5). The bottom surface of the conical cover (6) is rotatably connected to the base plate (4). A cleaning component (7) is fixedly connected to the top surface of the base plate (4). The cleaning component (7) is used to clean the inner wall of the annular filter element (5) and the surface of the conical cover (6). The annular filter element (5) includes a filter ring (51) sintered from metal powder. The filter ring (51) is fixedly connected to both the upper and lower ends with fixing rings (52). The upper fixing ring (52) is rotatably connected to the processing box (2), and the lower fixing ring (52) is rotatably connected to the base plate (4).

2. The laser cutting exhaust gas treatment system based on an electricity metering box as described in claim 1, characterized in that, The cleaning assembly (7) includes a protective cover (71) that is fixedly connected to the base plate (4). The opening side of the protective cover (71) is set facing the inner wall of the filter ring (51). A first cleaning brush (72) is fixedly connected inside the protective cover (71). The first cleaning brush (72) is in frictional contact with the inner wall of the filter ring (51). A second cleaning brush (73) is fixedly connected to the side of the protective cover (71) facing the conical cover (6). The second cleaning brush (73) is in frictional contact with the conical cover (6).

3. The laser cutting exhaust gas treatment system based on an electricity metering box as described in claim 2, characterized in that, Below the protective cover (71) is a dust collection cylinder (10) rotatably connected to the base plate (4). Multiple dust collection holes are provided on the top surface of the dust collection cylinder (10) and on the base plate (4) at the position corresponding to the top surface of the dust collection cylinder (10). A motor (9) is fixedly installed on the outer wall of the processing box (2). The motor (9) is connected to the dust collection cylinder (10) in a transmission. A transmission component is connected between the dust collection cylinder (10) and the annular filter element (5). The lower end of the dust collection cylinder (10) extends into the body of the cartridge dust collector (1) and is fixedly connected to a negative pressure pipe (13). A negative pressure hole is provided on the side wall of the negative pressure pipe (13). A dust discharge pipe (15) is fixedly connected to the lower end of the negative pressure pipe (13). The lower end of the dust discharge pipe (15) extends to the dust storage area above the body of the cartridge dust collector (1).

4. The laser cutting exhaust gas treatment system based on an electricity metering box as described in claim 1, characterized in that, An arc-shaped plate (8) is provided on the outer side of the annular filter element (5). The arc-shaped plate (8) is connected and fixed to the base plate (4), and the arc-shaped plate (8) is provided corresponding to the protective cover (71).

5. The laser cutting exhaust gas treatment system based on an electricity metering box as described in claim 3, characterized in that, The transmission component includes an external toothed ring (11) fixedly sleeved on the upper end of the outer wall of the dust collection cylinder (10), and an internal toothed ring (12) fixedly connected to the inner wall of the fixing ring (52) on the lower side, wherein the external toothed ring (11) and the internal toothed ring (12) are meshed together.

6. The laser cutting exhaust gas treatment system based on an electricity metering box as described in claim 3, characterized in that, The outer wall of the negative pressure pipe (13) is rotatably sleeved with a support ring (14), the support ring (14) is connected and fixed to the inner wall of the filter cartridge dust collector body (1), and the support ring (14) is provided with a through hole that matches the negative pressure hole; The diameter of the negative pressure pipe (13) is larger than the diameter of the dust collection cylinder (10) and the dust discharge pipe (15).

7. The laser cutting exhaust gas treatment system based on an electricity metering box as described in claim 3, characterized in that, The lower end of the protective cover (71) is open. A triangular block (16) is fixedly connected to the side of the lower end of the protective cover (71) facing the inner wall of the annular filter (5). A baffle (17) is hinged to the lower end of the protective cover (71). The two ends of the baffle (17) abut against the inclined surface of the triangular block (16) and the inner wall of the protective cover (71), respectively. The upper end of the vacuum cleaner (10) is vertically slidably connected to a top rod (18), the top rod (18) is located on the lower side of the baffle (17), and an annular plate (19) is fixedly connected to the top rod (18). An arc-shaped strip (20) is fixedly connected to the inner side of the lower fixed ring (52), and one end of the arc-shaped strip (20) has an inclined surface.

8. The laser cutting exhaust gas treatment system based on an electricity metering box as described in claim 7, characterized in that, A scraper (21) is slidably sleeved on the top rod (18), and the scraper (21) is in frictional contact with the top surface of the bottom plate (4).

9. A laser cutting exhaust gas treatment process based on an energy metering box, applied to the laser cutting exhaust gas treatment system based on an energy metering box as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Waste gas collection: When the metal plate of the power metering box is cut by laser, the negative pressure device creates a negative pressure inside the collection hood, and transports the metal dust waste gas generated during the cutting to the treatment box (2). An airflow stabilizer is installed in the middle of the pipeline to adjust the airflow speed and keep it stable. S2, exhaust gas purification: large particles of hot metal debris are intercepted by the annular filter element (5), and the cleaning component (7) directly transports the intercepted large particles of hot metal debris to the dust storage area of ​​the cartridge dust collector body (1) through the dust collection cylinder (10). Fine dust passes through the annular filter element (5) and enters the cartridge dust collector body (1). The non-woven filter bag filters the fine dust and then exhausts the exhaust gas. S3, Deep Purification: The waste gas after dust filtration passes through an adsorption bed filled with a large amount of activated carbon, which adsorbs organic molecules and some ozone in the waste gas, and then further decomposes the organic waste gas through photo-oxidation catalysis or catalytic combustion equipment. S4. Clean gas is transported through pipelines to an online monitoring device to detect particulate matter concentration in real time. Once the concentration is within acceptable limits, the gas is discharged into the atmosphere.

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