Waste gas filtering mechanism for die casting machine

Abstract

The utility model discloses a waste gas filtering mechanism for a die-casting machine, which is characterized in that a partition screen plate is provided with a sieve pore structure, a water-liquid separation filtering part filled with cobblestones is arranged above the partition screen plate, the bottom of a gas-liquid separation part is provided with a guide inclined eave, and the guide inclined eave protrudes towards the center direction of the gas-liquid separation part; the waste gas filtering device is connected to the gas-liquid separation part through a pipeline, the water-liquid filtering structure comprises a filtering water connector formed in the bottom of a filtering shell, a drawer type water-liquid filtering element assembly is arranged in the filtering shell, and the water-liquid filtering element assembly comprises a filtering element barrel; a honeycomb ceramic core material, a filter cotton core material and an activated carbon core material are sequentially arranged at the middle upper part in the filter element barrel and form a water filter element structure, the water filter element structure is taken as a boundary, a water receiving space is formed at the top of the filter element barrel, a water storage space is formed at the bottom of the filter element barrel, the water receiving space is communicated with the gas-liquid separation part, and the water storage space is connected with the filter water interface. Rapid water-liquid separation and collection are realized, the air quality of a workshop is improved, and the humidity of the workshop is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment equipment, in particular to a waste gas filtering mechanism for a die-casting machine. Background Art

[0002] After the die casting mold is opened, the mold needs to be sprayed with cooling water to cool it down. However, due to the high temperature of the mold, water vaporizes to form a large amount of water vapor, which is also mixed with some waste gas generated by release agents and other substances. Water vapor will make the workshop too humid, which will cause the equipment to rust easily, pollute the workshop environment, and affect the health of the staff.

[0003] In order to ensure the environmental safety of the workshop, there are also exhaust gas filtering devices in the die-casting machine in the prior art, such as the Chinese utility model patent with application number "CN202221144090.8" and patent name "A water mist collection and purification device for a die-casting machine", which includes a collecting hood with a collecting chamber, and the collecting hood has a lower opening. The water mist collection and purification device for the die-casting machine also includes a filter unit for separating water mist in the airflow at least. The area on one side of the filter unit in the collecting chamber of the collecting hood is an airflow buffer area, and the area on the other side is a collection area; a connecting port is provided on the side wall of the airflow buffer area.

[0004] However, the above-mentioned die-casting machine water mist collection and purification device has the disadvantages of poor purification effect and lack of water liquid filtration. Therefore, it is necessary to improve it. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an exhaust gas filtration mechanism for a die-casting machine, so as to improve the exhaust gas purification effect and the water filtration quality, further improve the air quality of the workshop and avoid excessive humidity in the workshop.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an exhaust gas filtering mechanism for a die-casting machine, including an air collecting hood, a machine tool space is provided inside the air collecting hood for surrounding the die-casting machine, a water-liquid separation device is provided at the bottom of the air collecting hood, and an exhaust gas filtering device is provided at the side, wherein the water-liquid separation device includes a funnel portion, a gas-liquid separation portion and a water-liquid filtering structure which are sequentially connected from top to bottom, a partition mesh plate is provided inside the funnel portion, the partition mesh plate is provided with a sieve hole structure, a water-liquid separation filtering portion is provided above the partition mesh plate which is filled with pebbles, and a guiding inclined eaves is provided at the bottom of the gas-liquid separation portion, and the guiding inclined eaves are directed toward The gas-liquid separation part protrudes in the central direction and is arranged to be inclined downward. The exhaust gas filtering device is connected to the gas-liquid separation part through a pipeline. The water-liquid filtering structure includes: a filtered water interface is provided at the bottom of the filter shell, and a drawer-type water-liquid filter core assembly is provided inside the filter shell. The water-liquid filter core assembly includes a filter barrel. The middle and upper parts of the filter barrel are successively provided with honeycomb ceramic core materials, filter cotton core materials and activated carbon core materials to form a water filter core structure. The filter water core structure is used as the boundary. The top of the filter barrel forms a water receiving space, and the bottom of the filter barrel forms a water storage space. The water receiving space is connected to the gas-liquid separation part, and the water storage space is connected to the filtered water interface.

[0007] In a further technical solution, the exhaust gas filtering device includes an exhaust gas filtering housing, a filter cavity is provided inside the exhaust gas filtering housing, a plurality of partitions are provided inside the filter cavity along the height direction, and ultraviolet disinfection space, primary filtration space, diversion space and secondary filtration space are formed in sequence from bottom to top, and a stainless steel mesh cover is provided on the top of the exhaust gas filtering housing, and the stainless steel mesh cover covers the secondary filtration space, wherein a turbocharger pump is provided in the ultraviolet disinfection space or the primary filtration space, and the air outlet direction of the turbocharger pump is connected upward.

[0008] In a further technical solution, the turbocharger pump is arranged in the primary filter space, and a primary air filter structure is arranged at the bottom of the primary filter space. The primary air filter structure includes a supporting protective layer, an adsorption decomposition layer and an electrostatic adsorption layer arranged in sequence from bottom to top, wherein the supporting protective layer is made of non-woven fabric material, the supporting protective layer is impregnated with nanosilver, and the thickness of the supporting protective layer is 0.3mm-0.7mm; the adsorption decomposition layer is a mixture of potassium permanganate and activated carbon, and the particle size of potassium permanganate and activated carbon is 10-100 mesh; the electrostatic adsorption layer is made of electrostatic filter cotton material, and the thickness of the electrostatic adsorption layer is 0.1mm-0.5mm.

[0009] In a further technical solution, a secondary air filtration structure is provided at the top of the secondary filtration space. The secondary air filtration structure includes a stainless steel support layer, a carbon fiber layer and a HEPA high-efficiency filter mesh arranged from bottom to top. The filtration grade of the HEPA high-efficiency filter mesh is H10, H11, H12 or H13.

[0010] In a further technical solution, an ultraviolet lamp is provided in the ultraviolet disinfection space; a first air inlet is provided on one side of the ultraviolet disinfection space close to the air collecting hood, and a filter inlet is provided at the bottom; a first diverter plug is rotatably installed between the first air inlet and the filter inlet; the cross-sectional shape of the first diverter plug is fan-shaped, and the first diverter plug is selectively sealed at the first air inlet or the filter inlet.

[0011] In a further technical solution, the exhaust gas filtering device is provided with an airflow cleaning mode, and a reflux turbine pump is provided on the outside of the ultraviolet disinfection space. The reflux turbine pump blows air toward the ultraviolet disinfection space. When the exhaust gas filtering device is in the airflow cleaning mode, the turbocharger pump is in a closed state, the reflux turbine pump is in an open state, the first diverter plug is sealed at the filter inlet, and the first air inlet is in an open state.

[0012] In a further technical solution, a second air inlet is provided on one side of the diversion space close to the air collecting hood, and a secondary filter inlet is provided on the top. A second diversion plug is rotatably installed between the second air inlet and the secondary filter inlet. The cross-sectional shape of the second diversion plug is fan-shaped, and the second diversion plug is selectively sealed at the secondary filter inlet or the partition opening.

[0013] In a further technical solution, the exhaust gas filtering device is provided with a reflux mode. When the exhaust gas filtering device is in the reflux mode, the reflux turbine pump is in a closed state, and the first diverter plug is sealed at the secondary filter inlet.

[0014] In a further technical solution, four supporting feet are provided at the bottom of the air collecting hood, and rollers are provided at the bottom of the supporting feet.

[0015] After adopting the above structure, the advantages of the utility model compared with the prior art are: the utility model provides an exhaust gas filtering mechanism for a die-casting machine, which can quickly separate and filter the water and exhaust gas generated when the die-casting machine opens the mold and cools down, and the filtered exhaust gas can be directly discharged into the workshop, with good purification effect, improving the air quality and humidity control of the workshop, and improving the safety of workshop operations; filtering the die-casting exhaust gas through the secondary exhaust gas filtering structure can further improve the exhaust gas filtration quality, so that the exhaust gas is directly discharged indoors after filtration, and the exhaust gas humidity is reduced; the exhaust gas filtering device is provided with an airflow cleaning mode, which can blow air to cool down the equipment in the air collecting hood and shorten its cooling time; the exhaust gas filtering device is provided with a reflux mode, which can reflux the exhaust gas that has passed the first-level filtration into the air collecting hood to control its exhaust gas humidity, and further improve the humidity control quality of the workshop environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a cross-sectional view of the exhaust gas filtering device in the present utility model.

[0019] Figure 3 It is a cross-sectional view of the gas-liquid separation device in the utility model. DETAILED DESCRIPTION

[0020] The following are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention.

[0021] like Figures 1 to 3 As shown, an exhaust gas filtering mechanism for a die-casting machine includes an air collecting hood 1, wherein a machine tool space 10 is provided inside the air collecting hood 1 for surrounding the die-casting machine, a water-liquid separation device 2 is provided at the bottom of the air collecting hood 1, and an exhaust gas filtering device 4 is provided at the side, wherein the water-liquid separation device 2 includes a funnel portion, a gas-liquid separation portion 23 and a water-liquid filtering structure 3 which are sequentially connected from top to bottom, a partition mesh plate 21 is provided inside the funnel portion, the partition mesh plate 21 is provided with a sieve hole structure, a water-liquid separation filtering portion 22 is provided above the partition mesh plate 21 which is filled with pebbles, and a guiding inclined eaves 231 is provided at the bottom of the gas-liquid separation portion 23, the guiding inclined eaves 231 protrudes toward the center direction of the gas-liquid separation portion 23 and is downward The exhaust gas filtering device 4 is arranged at an angle, and is connected to the gas-liquid separation part 23 through a pipe 040. The water-liquid filtering structure 3 includes: a filtered water interface 30 is provided at the bottom of the filter shell, and a drawer-type water-liquid filter element assembly is provided inside the filter shell. The water-liquid filter element assembly includes a filter barrel 31, and a honeycomb ceramic core material 032, a filter cotton core material 033 and an activated carbon core material 034 are provided in sequence in the middle and upper parts of the filter barrel 31 to form a water filter core structure. With the filter water core structure as the boundary, a water receiving space 031 is formed at the top of the filter barrel 31, and a water storage space 035 is formed at the bottom of the filter barrel 31. The water receiving space 031 is connected to the gas-liquid separation part 23, and the water storage space 035 is connected to the filtered water interface 30.

[0022] It can quickly separate and filter the water and waste gas generated when the die-casting machine opens the mold and cools down. The filtered waste gas can be directly discharged into the workshop with good purification effect, improving the air quality and humidity control of the workshop and improving the safety of workshop operations.

[0023] When the steam generated after the mold is opened and cooled is sucked into the funnel part, it passes through the water-liquid separation filter part 22 filled with pebbles, condenses water on the surface of the pebbles, and drips to the bottom, completing the water-liquid separation.

[0024] Specifically, the exhaust gas filter device 4 includes an exhaust gas filter housing, a filter chamber is provided inside the exhaust gas filter housing, a plurality of partitions 4001 are arranged at intervals along the height direction inside the filter chamber, and ultraviolet disinfection space 401, primary filter space 402, diversion space 403 and secondary filter space 404 are formed from bottom to top, and a stainless steel mesh cover is provided on the top of the exhaust gas filter housing, which covers the secondary filter space 404, wherein a turbocharger pump 4024 is provided in the ultraviolet disinfection space 401 or the primary filter space 402, and the air outlet direction of the turbocharger pump 4024 is connected upward.

[0025] Specifically, the turbocharger pump 4024 is arranged in the primary filter space 402, and a primary air filter structure is arranged at the bottom of the primary filter space 402. The primary air filter structure includes a supporting protective layer 4021, an adsorption and decomposition layer 2022 and an electrostatic adsorption layer 4023 arranged in sequence from bottom to top, wherein the supporting protective layer 4021 is made of non-woven fabric material, the supporting protective layer 4021 is impregnated with nanosilver, and the thickness of the supporting protective layer 4021 is 0.3mm-0.7mm; the adsorption and decomposition layer 2022 is a mixture of potassium permanganate and activated carbon, and the particle size of potassium permanganate and activated carbon is 10-100 mesh; the electrostatic adsorption layer 4023 is made of electrostatic filter cotton material, and the thickness of the electrostatic adsorption layer 4023 is 0.1mm-0.5mm.

[0026] Specifically, a secondary air filtration structure is provided at the top of the secondary filtration space 404, and the secondary air filtration structure includes a stainless steel support layer 4041, a carbon fiber layer 4042 and a HEPA high-efficiency filter 4043 arranged from bottom to top. The filtration grade of the HEPA high-efficiency filter 4043 is H10, H11, H12 or H13.

[0027] Filtering the die-casting waste gas through a secondary waste gas filtration structure can further improve the waste gas filtration quality, so that the waste gas is directly discharged indoors after filtration, and the humidity of the waste gas is reduced.

[0028] Specifically, an ultraviolet lamp 4013 is provided in the ultraviolet disinfection space 401; a first air inlet 101 is provided on one side of the ultraviolet disinfection space 401 close to the air collecting hood 1, and a filter inlet is provided at the bottom, and a first diverter plug 4011 is rotatably installed between the first air inlet 101 and the filter inlet. The cross-sectional shape of the first diverter plug 4011 is fan-shaped, and the first diverter plug 4011 is selectively sealed at the first air inlet 101 or the filter inlet.

[0029] Specifically, the exhaust gas filter device 4 is provided with an airflow cleaning mode, and a reflux turbine pump 4012 is provided on the outside of the ultraviolet disinfection space 401. The reflux turbine pump 4012 blows air toward the ultraviolet disinfection space 401. When the exhaust gas filter device 4 is in the airflow cleaning mode, the turbocharger pump 4024 is in a closed state, the reflux turbine pump 4012 is in an open state, the first diversion plug 4011 is blocked at the filter inlet, and the first air inlet 101 is in an open state.

[0030] The exhaust gas filter device is equipped with an airflow cleaning mode, which can blow air to cool down the equipment in the air hood and shorten its cooling time.

[0031] Specifically, the second air inlet 102 is provided on one side of the diversion space 403 close to the air collecting hood 1, and a secondary filter inlet is provided on the top. A second diversion plug 4031 is rotatably installed between the second air inlet 102 and the secondary filter inlet. The cross-sectional shape of the second diversion plug 4031 is fan-shaped, and the second diversion plug 4031 is selectively blocked at the secondary filter inlet or the opening of the partition 4001. The exhaust gas filter device 4 is provided with a reflux mode. When the exhaust gas filter device 4 is in the reflux mode, the reflux turbine pump 4012 is in a closed state, and the first diversion plug 4011 is blocked at the secondary filter inlet.

[0032] The exhaust gas filtration device is equipped with a reflow mode, which can return the exhaust gas that has passed the first-level filtration to the gas collecting hood to control its exhaust gas humidity and further improve the humidity control quality of the workshop environment.

[0033] Specifically, four supporting legs 11 are provided at the bottom of the gas collecting hood 1, and rollers 12 are provided at the bottom of the supporting legs 11. The equipment is moved and the die casting machine is maintained.

[0034] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. An exhaust gas filtering mechanism for a die-casting machine, comprising an air collecting hood (1), wherein a machine tool space (10) is provided inside the air collecting hood (1) for surrounding the die-casting machine, characterized in that: The bottom of the gas collecting hood (1) is provided with a water-liquid separation device (2), and the side thereof is provided with an exhaust gas filtering device (4). The water-liquid separation device (2) comprises a funnel portion, a gas-liquid separation portion (23) and a water-liquid filtering structure (3) which are sequentially connected from top to bottom, a partitioning mesh plate (21) is provided inside the funnel portion, the partitioning mesh plate (21) is provided with a sieve hole structure, and a water-liquid separation filtering portion (22) is provided above the partitioning mesh plate (21) which is filled with pebbles. A guide sloping eave (231) is provided at the bottom of the gas-liquid separation part (23), the guide sloping eave (231) protrudes toward the center of the gas-liquid separation part (23) and is arranged to be inclined downward. The exhaust gas filtering device (4) is connected to the gas-liquid separation part (23) through a pipeline (040). The water-liquid filtering structure (3) comprises: a filtering water interface (30) is provided at the bottom of the filtering shell; a drawer-type water-liquid filtering core assembly is provided inside the filtering shell; the water-liquid filtering core assembly comprises a filter cartridge barrel (31); a honeycomb ceramic core material (032), a filter cotton core material (033) and an activated carbon core material (034) are provided in sequence in the middle and upper part of the filter cartridge barrel (31), and form a water filtering core structure; with the filter cartridge water core structure as the boundary, a water receiving space (031) is formed at the top of the filter cartridge barrel (31); a water storage space (035) is formed at the bottom of the filter cartridge barrel (31); the water receiving space (031) is connected to the gas-liquid separation part (23); and the water storage space (035) is connected to the filtering water interface (30).

2. The exhaust gas filtering mechanism for a die casting machine according to claim 1, characterized in that: The exhaust gas filtering device (4) comprises an exhaust gas filtering housing, a filtering chamber is provided inside the exhaust gas filtering housing, a plurality of partitions (4001) are provided inside the filtering chamber at intervals along the height direction, and an ultraviolet disinfection space (401), a primary filtering space (402), a diversion space (403) and a secondary filtering space (404) are formed in sequence from bottom to top, a stainless steel mesh cover is provided on the top of the exhaust gas filtering housing, and the stainless steel mesh cover covers the secondary filtering space (404), wherein a turbocharger pump (4024) is provided in the ultraviolet disinfection space (401) or the primary filtering space (402), and the air outlet direction of the turbocharger pump (4024) is connected and arranged upward.

3. The exhaust gas filtering mechanism for a die casting machine according to claim 2, characterized in that: The turbocharger pump (4024) is arranged in the primary filter space (402), and a primary air filter structure is arranged at the bottom of the primary filter space (402), and the primary air filter structure includes a support protection layer (4021), an adsorption and decomposition layer (2022) and an electrostatic adsorption layer (4023) arranged in sequence from bottom to top, wherein the support protection layer (4021) is made of non-woven fabric material, the support protection layer (4021) is impregnated with nanosilver, and the thickness of the support protection layer (4021) is 0.3mm-0.7mm; the adsorption and decomposition layer (2022) is a mixture of potassium permanganate and activated carbon, and the particle size of potassium permanganate and activated carbon is 10-100 mesh; the electrostatic adsorption layer (4023) is made of electrostatic filter cotton material, and the thickness of the electrostatic adsorption layer (4023) is 0.1mm-0.5mm.

4. The exhaust gas filtering mechanism for a die casting machine according to claim 3, characterized in that: A secondary air filtration structure is provided at the top of the secondary filtration space (404), and the secondary air filtration structure comprises a stainless steel support layer (4041), a carbon fiber layer (4042) and a HEPA high-efficiency filter (4043) arranged in sequence from bottom to top, and the filtration grade of the HEPA high-efficiency filter (4043) is H10, H11, H12 or H13.

5. The exhaust gas filtering mechanism for a die casting machine according to claim 4, characterized in that: An ultraviolet lamp (4013) is provided in the ultraviolet disinfection space (401); a first air inlet (101) is provided on one side of the ultraviolet disinfection space (401) close to the air collecting hood (1), and a filter inlet is provided at the bottom; a first diversion plug (4011) is rotatably installed between the first air inlet (101) and the filter inlet; the cross-sectional shape of the first diversion plug (4011) is fan-shaped, and the first diversion plug (4011) is selectively sealed at the first air inlet (101) or the filter inlet.

6. The exhaust gas filtering mechanism for a die casting machine according to claim 5, characterized in that: The exhaust gas filter device (4) is provided with an airflow cleaning mode. A reflux turbine pump (4012) is provided on the outside of the ultraviolet disinfection space (401). The reflux turbine pump (4012) blows air toward the ultraviolet disinfection space (401). When the exhaust gas filter device (4) is in the airflow cleaning mode, the turbocharger pump (4024) is in a closed state, the reflux turbine pump (4012) is in an open state, the first diversion plug (4011) is blocked at the filter inlet, and the first air inlet (101) is in an open state.

7. The exhaust gas filtering mechanism for a die casting machine according to claim 6, characterized in that: The diversion space (403) is provided with a second air inlet (102) on one side close to the air collecting hood (1) and a secondary filter inlet on the top. A second diversion plug (4031) is rotatably installed between the second air inlet (102) and the secondary filter inlet. The cross-sectional shape of the second diversion plug (4031) is fan-shaped. The second diversion plug (4031) is selectively sealed at the secondary filter inlet or the opening of the partition (4001).

8. The exhaust gas filtering mechanism for a die casting machine according to claim 7, characterized in that: The exhaust gas filtering device (4) is provided with a reflux mode. When the exhaust gas filtering device (4) is in the reflux mode, the reflux turbine pump (4012) is in a closed state, and the first diversion plug (4011) is sealed at the secondary filter inlet.

9. The exhaust gas filtering mechanism for a die casting machine according to claim 1, characterized in that: Four supporting legs (11) are provided at the bottom of the air collecting hood (1), and rollers (12) are provided at the bottom of the supporting legs (11).

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