Special exhaust equipment for chemical workshop

Abstract

The utility model relates to the technical field of air purification equipment, in particular to special exhaust equipment for a chemical workshop. The primary air filter, the photolysis unit and the efficient air filter are all arranged in the cavity of the shell and are sequentially arranged in the gas flowing direction. And the vertical primary air filter and the high-efficiency air filter are inserted and assembled with the shell through the connection transition assembly. The connecting transition assembly comprises an upper inserting piece and a lower inserting piece. For the primary air filter, an upper insertion sliding groove and a lower insertion sliding groove which are matched with the width size of the primary air filter are formed in the upper insertion piece and the lower insertion piece respectively. After the detachable panel is detached, the primary air filter, the photolysis unit and the high-efficiency air filter are all exposed to the sight line. On the premise that the design structure complexity and the manufacturing cost of the shell are not obviously increased, only one worker is needed to execute replacement operation, and the replacement operation can be completed without risks by standing on the ground.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification equipment, in particular to a special exhaust device for a chemical workshop. Background Art

[0002] In chemical plants, pharmaceutical plants and other industrial sites, a large amount of polluted waste gas is inevitably generated during production, even including hydrogen sulfide and sulfided alcohols with foul odors. As the country's environmental protection laws and regulations become increasingly stringent, each chemical preparation workshop is required to be closed for production, and each air outlet must be equipped with special exhaust equipment. Before the waste gas is officially discharged into the atmosphere, it must go through stages such as particle filtration and photolysis deodorization to ensure that it meets the waste gas emission acceptance standards.

[0003] Special exhaust equipment usually consists of several parts such as a shell, a primary air filter, a photolysis unit and a high-efficiency air filter. Among them, the primary air filter is used to filter the large particle pollutants contained in the exhaust gas, the photolysis unit uses photocatalytic reaction to decompose the malodorous components contained in the exhaust gas, and the high-efficiency air filter is used to finely filter the exhaust gas after deodorization (particle size below 0.2μm). As far as the current technical status is concerned, along its length, there are a series of vertical grooves in a linear array on the front and rear side walls of the inner cavity of the shell, which are used for the primary air filter, the high-efficiency air filter and the titanium dioxide catalytic plate contained in the photolysis unit to be assembled in a vertical insertion manner. According to feedback from the after-sales technical center, on-site status monitoring and repair and disassembly operations are extremely difficult to implement, time-consuming and labor-intensive, and require the use of a ladder. The reason is that the height of the special exhaust equipment is generally maintained at more than 1m, and the height of the primary air filter, high-efficiency air filter and titanium dioxide catalytic plate that match it is also close to 1m, and its width exceeds 0.6m. When visual inspection of the status of the primary air filter, HEPA filter and titanium dioxide catalyst plate is required, it is necessary to go up to remove the cover. When replacement is required, it is difficult for a single worker to complete the removal and installation without going up. Usually, two workers standing on the dedicated exhaust equipment need to cooperate, or a single worker needs to stand on the top wall of the dedicated exhaust equipment, which poses the risk of falling and the risk of the top wall being crushed and deformed. Therefore, it is urgent for those skilled in the art to solve the above problems. Utility Model Content

[0004] Therefore, in view of the above-mentioned existing problems and defects, the development and design team of the present utility model collected relevant information, conducted multiple evaluations and considerations, and continuously experimented and modified the development and design team, which eventually led to the emergence of a special exhaust equipment for the chemical workshop.

[0005] In order to solve the above technical problems, the utility model relates to a special exhaust equipment for chemical workshops, which is used to purify pollutants such as hydrogen sulfide and sulfide alcohols to meet emission standards. The special exhaust equipment for chemical workshops includes a shell, a primary air filter, a photolysis unit and a high-efficiency air filter. Along the length direction of the shell, an air inlet and an air outlet are respectively opened on its two opposite end faces. The primary air filter, the photolysis unit and the high-efficiency air filter are all built into the cavity of the shell and arranged in sequence along the gas flow direction. The special exhaust equipment for chemical workshops also includes a connecting transition component. The vertical primary air filter and the high-efficiency air filter are both connected to the transition component to achieve plug-in assembly with the shell. The connecting transition component includes an upper plug-in and a lower plug-in respectively fixed to the top wall and the bottom wall of the shell. As for the primary air filter, the upper plug-in and the lower plug-in are respectively formed with an upper plug-in sliding groove and a lower plug-in sliding groove that are adapted to the width size of the primary air filter. The shell includes a shell body and a detachable panel. When the removable panels are removed, the primary air filter, photolysis unit and HEPA filter are exposed to view.

[0006] As a further improvement of the technical solution disclosed in the utility model, the connection transition assembly also includes an upper locking screw and a lower screw. A plurality of upper locking screws are used in conjunction with the upper plug-in component and are arranged in a linear array along the length direction of the upper plug-in component. A plurality of lower locking screws are used in conjunction with the lower plug-in component and are arranged in a linear array along the length direction of the lower plug-in component. When the primary air filter is inserted into place relative to the housing, the upper locking screw and the lower screw are tightened, and the relative position of the primary air filter is locked under the action of the lateral pushing force.

[0007] As a further improvement of the technical solution disclosed in the utility model, the connection transition assembly also includes an upper anti-wear rubber pad and a lower anti-wear rubber pad. The upper anti-wear rubber pad is matched with the upper plug-in component, and is glued and fixed in the upper plug-in sliding groove in an imitation shape. The lower anti-wear rubber pad is matched with the lower plug-in component, and is glued and fixed in the lower plug-in sliding groove in an imitation shape.

[0008] As a further improvement of the technical solution disclosed in the utility model, the photolysis unit includes at least one group of ultraviolet emitting devices and nano-titanium dioxide catalytic plates for matching applications. The nano-titanium dioxide catalytic plate is also connected with the transition component to achieve plug-in assembly with the shell. The ultraviolet emitting device includes a plug-in seat and an ultraviolet emitting tube. The plug-in seat is abutted against and fixed to the bottom wall of the shell. Along its length, the plug-in seat linear array has a plurality of plug-in holes for plugging in the ultraviolet emitting tube. Corresponding to the plug-in holes, a linear array at a set height position below the top wall of the shell has a plurality of through holes adapted to the outer diameter of the ultraviolet emitting tube.

[0009] As a further improvement of the technical solution disclosed by the present utility model, the ultraviolet emission device further includes a rubber conical sleeve. A plurality of rubber conical sleeves are correspondingly embedded in the insertion holes one by one. During the process of inserting the ultraviolet emission tube, its end is guided into the insertion hole under the guiding force from the rubber conical sleeve.

[0010] As a further improvement of the technical solution disclosed by the present utility model, with the aid of a plurality of manual snap components, the detachable panel can be assembled with the shell body.

[0011] As a further improvement of the technical solution disclosed by the present utility model, the manual snap component includes a hinge seat, a locking ring and a locking buckle. The hinge seat and the locking buckle are respectively fixed to the shell body and the detachable panel and are in relative positions. The locking ring is based on the hinge seat for installation, and when it is subjected to the finger force, it performs a yaw movement towards the locking buckle until its outward yaw freedom is limited by the locking buckle.

[0012] As a further improvement of the technical solution disclosed by the present utility model, the locking buckle is composed of a fan-shaped flat section and an arc-shaped bending section. The fan-shaped flat section is in contact with the shell body and is riveted and fixed. At a certain moment during the yaw movement of the locking ring, the arc-shaped bending section undergoes elastic deformation due to the extrusion force from the locking ring to avoid the locking ring, and the locking ring can pass over the arc-shaped bending section.

[0013] In the on-site after-sales repair stage, the worker first needs to remove the detachable panel so that the primary air filter, the high-efficiency air filter and the titanium dioxide catalytic plate are all exposed to sight. Subsequently, the worker can simply draw out the primary air filter, the high-efficiency air filter or / and the titanium dioxide catalytic plate to be replaced along the front-rear direction.

[0014] Compared with the special exhaust equipment for chemical workshops with traditional design structures, in the technical solution disclosed by the present utility model, the disassembly and assembly operations of the primary air filter, the high-efficiency air filter and the titanium dioxide catalytic plate included in the photolysis unit can be achieved by means of a pulling method along the front-rear direction. In this way, on the one hand, without significantly increasing the complexity of the shell design structure and the manufacturing cost, the replacement operation only requires a single worker, and he can safely complete it while standing on the ground without the need for auxiliary equipment such as a stepladder; on the other hand, by removing the detachable panel, the worker can visually inspect the primary air filter, the high-efficiency air filter and the titanium dioxide catalytic plate while standing on the ground, which is conducive to conveniently and quickly grasping the specific operation status of the special exhaust equipment. Brief Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional schematic diagram of the first implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0017] Figure 2 It is a three-dimensional schematic diagram (in the state where the detachable panel is hidden) of the first implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0018] Figure 3 It is a three-dimensional schematic diagram from another perspective (in the state where the detachable panel is hidden) of the first implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0019] Figure 4 It is a three-dimensional schematic diagram (in the state where the cover plate is hidden) of the first implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0020] Figure 5 It is a three-dimensional schematic diagram (in the state where the housing is hidden) of the first implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0021] Figure 6 It is a three-dimensional schematic diagram of the ultraviolet emission device in the first implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0022] Figure 7 It is a three-dimensional schematic diagram of the insertion seat in the first implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0023] Figure 8 It is a three-dimensional schematic diagram of the connection transition component in the first implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0024] Figure 9 is Figure 1 the I partial enlarged view of

[0025] Figure 10 It is a three-dimensional schematic diagram of the buckle in the first implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0026] Figure 11 It is a schematic diagram of the state after the primary air filter is inserted into the connection transition component in the second implementation manner of the special exhaust equipment for chemical workshops in the present invention.

[0027] Figure 12 is Figure 11 the II partial enlarged view of

[0028] Figure 13 is Figure 11 the III partial enlarged view of

[0029] Figure 14 It is the structural schematic diagram of the ultraviolet emission device in the second embodiment of the special exhaust equipment for chemical workshops of the present utility model.

[0030] Figure 15 is Figure 14 the IV partial enlarged view of

[0031] Figure 16 It is the three-dimensional schematic diagram of the rubber conical sleeve in the second embodiment of the special exhaust equipment for chemical workshops of the present utility model.

[0032] 1 - housing; 11 - housing main body; 111 - air inlet; 112 - air outlet; 113 - through hole; 12 - detachable panel; 13 - manual buckle assembly; 131 - hinge seat; 132 - locking ring; 133 - lock catch; 1331 - fan-shaped flat section; 1332 - arc-shaped bending section; 2 - primary air filter; 3 - photolysis unit; 31 - ultraviolet emission device; 311 - insertion seat; 3111 - insertion hole; 312 - ultraviolet emission tube; 313 - rubber conical sleeve; 32 - nano-titanium dioxide catalytic plate; 4 - high-efficiency air filter; 5 - connection transition assembly; 51 - upper insertion part; 511 - upper insertion sliding groove; 52 - lower insertion part; 521 - lower insertion sliding groove; 53 - upper locking screw; 54 - lower screw; 55 - upper anti-abrasion rubber pad; 56 - lower anti-abrasion rubber pad. Specific embodiments

[0033] The special exhaust equipment for chemical workshops disclosed by the present utility model is different from the conventional air supply outlet, and the calibrated area of its working surface exceeds 4m 2 , and it is usually installed as a terminal high-efficiency filtering device at the ceiling of a large factory building.

[0034] The following combines specific embodiments to further elaborate on the content disclosed by the present utility model. Figure 1 , Figure 2 respectively show the three-dimensional schematic diagrams of two different perspectives of the first embodiment of the special exhaust equipment for chemical workshops of the present utility model. It can be seen that it mainly consists of several parts such as a box body 1, a support frame 2, a plate-shaped filter 3, a diffuser plate 4, and an air inlet flange 5. Among them, as Figure 3As shown, the box body 1 is formed by welding together multiple metal plates 11. And for the purpose of anti-corrosion and extending the service life, it is advisable to perform powder coating treatment on the whole after welding and forming. The support frame 2 serves as the installation base for multiple plate-shaped filters 3, and it spans and is fixed in the inner cavity of the box body 1. The air inlet flange 5 is used as the connection transition between the ceiling or the air supply duct and the box body 1. The diffuser plate 4 is used to diffuse the air flow to adjust the air flow distribution and intensity in the pre-air supply area. It takes the box body 1 as the assembly base and completely covers the air outlet of the box body 1. As Figure 4 shown, along its width direction, the support frame 2 is divided into two installation areas, respectively named the first installation area and the second installation area. The first installation area and the second installation area have the same structural form. It is formed by enclosing and welding multiple sections of profiles. According to the actual layout orientation and specific functional areas, it is divided into side beams 21, bottom beams 22 and top beams 23. And the bottom beams 22 and top beams 23 are both detachably connected to the two opposite side beams 21 by means of screws 25 to facilitate the disassembly and assembly operations of the plate-shaped filters 3. Furthermore, in order to achieve the organic combination of the first installation area and the second installation area and the fixed connection with the box body, multiple connecting transition beams 24 are also added. When performing the loading operation of the plate-shaped filter, the installation forms of the first installation area and the second installation area are the same. Taking the first installation area as an example, along the height direction, 4 plate-shaped filters are stacked and inserted into it in sequence (as Figure 6 shown in

[0035] Here, it should be noted that the number of partitions of the installation area is specifically set according to the width dimension of the support frame 2. The present utility model does not make specific limitations, and it is advisable to control the single-zone width value within 50 - 80 cm.

[0036] In the technical solution disclosed by the present utility model, the support frame 2 provided in the inner cavity of the box body 1 is used to load multiple plate-shaped filters 3 at the same time, and the installation area is divided, thereby not only improving the rationality of the utilization of the design space, but also facilitating the regular arrangement of the plate-shaped filters 3, laying a good foundation for the full play of the air purification performance.

[0037] Furthermore, multiple plate-shaped filters 3 are assembled by means of plug-in and gradual stacking, which can effectively reduce the working hours required for workshop assembly and is also conducive to performing maintenance operations on them during actual later use. Taking later maintenance as an example for illustration, specifically: when a period of use has elapsed and the plate-shaped filter 3 needs to be disassembled and cleaned, the operator first releases the connection between the support frame and the box body 1, and removes the whole of it together with multiple plate-shaped filters 3 from the inner cavity of the box body 1. Then, loosen each screw 25 to remove the bottom beam 22 and the top beam 23, which facilitates the extraction of multiple plate-shaped filters 3 from the first installation area and the second installation area in sequence. Subsequently, sequentially push multiple new plate-shaped filters 3 into the first installation area and the second installation area, and ensure that they are pressed tightly against each other. Then, the operator reassembles the bottom beam 22 and the top beam 23 in place and tightens each screw 25 again.

[0038] As Figure 4 shown, the width dimension of the first installation area is determined by the opening L between two mutually opposed side beams 21. The side beam 21 is preferably a U-shaped steel. Along its width direction, at least one sliding member 34 adapted to the size of the U-shaped steel opening groove is provided on both sides of the plate-shaped filter 3. And the sliding member 34 is preferably a bent sheet metal part and is directly welded to the plate-shaped filter 3 as a whole. In this way, on the one hand, on the premise that the support frame 2 meets the design function of bearing the plate-shaped filter 3, it has a minimalist design structure, which is conducive to reducing the manufacturing cost; on the other hand, during the workshop assembly stage, due to the matching of the sliding member 34 and the U-shaped steel opening groove, it is conducive to realizing the regular arrangement of the plate-shaped filters 3 and can also effectively reduce the time required for assembly.

[0039] As Figure 5 shown in, the plate-shaped filter 3 is preferably of a combined structure, which includes an outer frame 31, a honeycomb plate 32 and a filter filler 33. The honeycomb plate 32 is embedded and fixed in the outer frame 31, and a plurality of hexagonal honeycomb cavities 321 for placing the filter filler 33 are uniformly distributed thereon. Compared with traditional activated carbon adsorption devices, the honeycomb-shaped plate-shaped filter 3 disclosed by the present utility model has higher adsorption efficiency and longer service life. According to its structural characteristics, the honeycomb plate 32 has extremely strong structural strength, and when subjected to high-intensity wind force, it is not easily deformed itself to ensure the reliable fixation of the filter filler 33.

[0040] According to the different types of clean workshops and specific clean standards, the filter filler can be selected from one or several of ultra-fine glass fiber filter cotton, activated carbon filter cotton, polyphenylene sulfide chemical fiber Ryton filter material and imide chemical fiber Nomex filter material according to the actual situation.

[0041] It is known that in practical applications, when the air supply intensity of an external fan or an external air conditioner is relatively high, the air outlet will generate a huge noise and vibrate severely. The reason lies in that the air duct path formed inside the box body 1 is extremely long and the thickness of the metal plate constituting the box body 1 is relatively thin. In view of this, as a further optimization of the above technical solution, as Figure 3 shown in the figure, a structural reinforcement member 12 is additionally provided in the inner cavity of the box body 1. The structural reinforcement member 12 spans and is fixed in the inner cavity of the box body 1, and it is preferably formed by welding together metal bearing plates 121 that cross each other in a cross shape. The free ends of the metal bearing plates 121 are all abutted against the inner side wall of the box body 1 without any gap. In this way, without significantly increasing the design structure and manufacturing cost, the structural strength and anti-vibration ability of the box body 1 are effectively improved, and thus it is conducive to a substantial reduction in working noise.

[0042] The present utility model also discloses a second implementation manner of the exhaust equipment dedicated for a chemical workshop. The difference compared with the above first implementation manner lies in that: a plurality of plasma generators 6 are additionally provided inside the box body 1. The plasma generators 6 are applied in a matching manner with the plate-shaped filter 3, fixed as a whole, and insulated from each other (as Figure 7 shown in the figure). During the working process, the air flow is pumped into the inner cavity of the box body 1 under the action of an external fan or an air conditioner. First, it passes through the plate-shaped filter 3 for dust particle filtration. Then, the ion generator 6 uses the negative oxygen ions in the air to remove bacteria, viruses, dust, and harmful substances in the air flow. Specifically, the ion generator 6 uses a high-voltage electric field to decompose oxygen molecules into oxygen ions and free electrons, and then the oxygen ions combine with water molecules in the air to form hydroxyl ions, generating a series of chemical reactions, so that the harmful substances in the air are oxidized into harmless substances, thereby achieving the purpose of improving the air quality in the workshop and making it meet the air quality acceptance standard.

[0043] It is known that according to the conventional design specifications, the plasma generator 6 can adopt various design methods to achieve detachable connection with the plate-shaped filter 3 and complete insulation. However, a design scheme with a simple structure, easy to manufacture and implement, and convenient for later maintenance and repair operations is recommended here. Specifically: a plurality of ceramic insulators 7 are used to achieve the high-voltage insulation of the plasma generator 6 relative to the plate-shaped filter 3. In the installed state, the ceramic insulators 7 are penetrated by fastening long screws and are pressed between the plasma generator 6 and the plate-shaped filter 3.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A special exhaust equipment for chemical workshops, which is used to purify pollutants such as hydrogen sulfide and sulfhydryl alcohols to meet the emission standards; the special exhaust equipment for chemical workshops includes a housing, a primary air filter, a photolysis unit, and a high-efficiency air filter; along the length direction of the housing, an air inlet and an air outlet are respectively provided at its two opposite end faces; the primary air filter, the photolysis unit, and the high-efficiency air filter are all built in the cavity of the housing and are arranged in sequence along the gas flow direction, and it is characterized in that, The special exhaust equipment for the chemical workshop further includes a connection transition component; the vertically placed primary air filter and the high-efficiency air filter are both inserted and assembled with the housing through the connection transition component; the connection transition component includes an upper insertion component and a lower insertion component respectively fixed to the top wall and the bottom wall of the housing; for the primary air filter, the upper insertion component and the lower insertion component are respectively formed with an upper insertion sliding groove and a lower insertion sliding groove adapted to the width dimension of the primary air filter; the housing includes a housing main body and a detachable panel; when the detachable panel is removed, the primary air filter, the photocatalytic unit and the high-efficiency air filter are all exposed to sight.

2. The special exhaust equipment for chemical workshops according to claim 1, characterized in that, The connection transition component further includes upper locking screws and lower locking screws; a plurality of the upper locking screws are applied in a matching manner with the upper insertion component and are linearly arrayed along the length direction of the upper insertion component; a plurality of the lower locking screws are applied in a matching manner with the lower insertion component and are linearly arrayed along the length direction of the lower insertion component; when the primary air filter is inserted in place relative to the housing, the upper locking screws and the lower locking screws are tightened, and the relative position of the primary air filter is locked under the action of the lateral pushing force.

3. The special exhaust equipment for chemical workshops according to claim 1, characterized in that, The connection transition component further includes an upper anti-wear rubber pad and a lower anti-wear rubber pad; the upper anti-wear rubber pad is matched with the upper insertion component and is adhesively fixed in the upper insertion sliding groove in a conforming shape; the lower anti-wear rubber pad is matched with the lower insertion component and is adhesively fixed in the lower insertion sliding groove in a conforming shape.

4. The special exhaust equipment for chemical workshops according to any one of claims 1-3, characterized in that, The photocatalytic unit includes at least one set of ultraviolet emission device and nano-titanium dioxide catalytic plate applied in a matching manner; the nano-titanium dioxide catalytic plate is also inserted and assembled with the housing through the connection transition component; the ultraviolet emission device includes an insertion seat and an ultraviolet emission tube; the insertion seat abuts against and is fixed to the bottom wall of the housing; along its length direction, the insertion seat is linearly arrayed with a plurality of insertion holes for inserting the ultraviolet emission tube; correspondingly, at a set height position below the top wall of the housing, a plurality of through holes adapted to the outer diameter of the ultraviolet emission tube are linearly arrayed.

5. The special exhaust equipment for chemical workshops according to claim 4, characterized in that, The ultraviolet emission device further includes a rubber conical sleeve; a plurality of the rubber conical sleeves are respectively embedded in the insertion holes; during the process of inserting the ultraviolet emission tube, the end of the ultraviolet emission tube is guided into the insertion hole under the guiding force of the rubber conical sleeve.

6. The special exhaust equipment for chemical workshops according to claim 1, characterized in that, At the same time, with the aid of a plurality of manual snap components, the detachable panel is assembled with the housing main body.

7. The special exhaust equipment for chemical workshops according to claim 6, characterized in that, The manual snap component includes a hinge seat, a lock ring and a lock catch; the hinge seat and the lock catch are respectively fixed to the housing main body and the detachable panel and are opposite in position; the lock ring is based on the hinge seat as an installation base, and when it is acted by a finger force, it performs a yawing movement towards the lock catch until its outward yawing degree of freedom is limited by the lock catch.

8. The special exhaust equipment for chemical workshops according to claim 7, characterized in that, The buckle is composed of a fan-shaped flat section and an arc-shaped bent section; the fan-shaped flat section abuts against the shell main body and is fixed by riveting; at a certain moment during the yawing movement process of the lock ring, the arc-shaped bent section undergoes elastic deformation due to the extrusion force from the lock ring to avoid the lock ring, and the lock ring can pass over the arc-shaped bent section.

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