CN111514710A

CN111514710A - Purification unit capable of improving purification efficiency

Info

Publication number: CN111514710A
Application number: CN202010319401.9A
Authority: CN
Inventors: 张峰; 孙旭东; 刘智; 吴风民; 郑慧慧
Original assignee: Shandong Kanglailai Purification Engineering Co ltd
Current assignee: Shandong Kanglailai Purification Engineering Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-08-11
Anticipated expiration: 2040-04-21
Also published as: CN111514710B

Abstract

The invention discloses a purification unit for improving purification efficiency, and relates to the technical field of purification units. The technical scheme is that the purifier comprises a machine shell and a purifying assembly positioned in the machine shell, wherein an air inlet and an air outlet are respectively formed in two ends of the machine shell in the length direction, an installation groove is formed in the outer side wall of the machine shell in a penetrating mode, a positioning frame is arranged in an inner cavity of the machine shell, a settling tank is arranged on the inner side wall of the machine shell, and a bearing plate is slidably arranged in the settling tank; the casing lateral wall is provided with the step groove around the mounting groove periphery, and the step inslot is provided with the sealing door, and the casing lateral wall just is located mounting groove length direction's one end and rotates and be provided with two retainer plates, and each retainer plate wherein one end is provided with the plane of stepping down, has reached the purification unit and has been convenient for at casing inner chamber installation and dismantlement, has effectively improved the effect of purification unit to poisonous and harmful gas's purification efficiency.

Description

Purification unit capable of improving purification efficiency

Technical Field

The invention relates to the technical field of purification units, in particular to a purification unit capable of improving purification efficiency.

Background

At present, workers in a pathology laboratory can contact and use chemical reagents such as formaldehyde, xylene and the like in a large amount in daily work, and the formaldehyde and the xylene reagents have the characteristics of high volatility, easy adhesion and toxic and harmful volatile gas; after the formaldehyde and the dimethylbenzene reagent are volatilized, the air in a pathological laboratory is extremely easy to be in a state that the concentration of harmful substances exceeds the standard, and the health of workers is greatly threatened; the purification unit, especially the purification unit who has gas exchange and harmful substance dissociation device simultaneously can effectively discharge the harmful gas in the pathology laboratory to the open air to the healthy of guarantee staff in the course of the work, so this equipment has become the equipment of loading in the pathology laboratory, using very extensively at present.

The chinese patent with the current application number CN108662675A provides an ion air purification device and an air purification system, which includes the ion air purification device. Ion air purification device is by the casing with be located casing inner chamber's new trend atomizing device, plasma purification device and heat exchange device, and casing length direction's both ends are provided with the new trend export respectively and the export of airing exhaust, and new trend export below is provided with the entry of airing exhaust, and the export below of airing exhaust is provided with the new trend entry, and casing inner chamber just is located the exit of airing exhaust and is provided with first fan, and casing inner chamber just is located the new trend entry and is provided with the second fan. When the equipment is operated, gas in a pathology laboratory is pumped by the first fan and the second fan to enter the inner cavity of the shell, and the plasma purification device generates a high-voltage electric field to enable a large number of energy-carrying electrons to bombard pollutant molecular particles and degrade harmful substances in the pollutant molecular particles, so that a clean and safe working environment is provided for workers; the fresh air atomization device can generate a large amount of water mist to dissolve peculiar smell gas in the harmful gas, so that the pollution of the harmful gas after being discharged outwards is reduced; the heat exchange device can exchange heat for the air in the inner cavity of the machine shell, so that the air in the pathology laboratory is always kept at a proper temperature.

The above prior art solutions have the following drawbacks: after fresh air atomizing device and plasma purifier operated for a certain time, need the maintainer to overhaul, change its inside purification subassembly and clean its and the spot of casing installation department, and the most embedded installation inside the casing of fresh air atomizing device and plasma purifier of ordinary purification unit, it is extremely inconvenient maintainer clean, overhaul, and then easily make the inside adhesive substance that remains poisonous and harmful gas of casing, and influence equipment to poisonous and harmful gas's purification efficiency, so remain to improve.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a purification unit for improving the purification efficiency, which has the advantage of effectively improving the purification efficiency of the purification unit on toxic and harmful gases.

In order to achieve the purpose, the invention provides the following technical scheme:

a purification unit for improving purification efficiency comprises a casing and a purification assembly positioned in the casing, wherein an air inlet and an air outlet are respectively formed in two ends of the casing in the length direction, an installation groove convenient for installation of the purification assembly is formed in the outer side wall of the casing in a penetrating mode along the thickness direction of the outer side wall of the casing, a positioning frame used for limiting the position of the purification assembly is arranged in the inner cavity of the casing, a settling tank is arranged on the inner side wall of the casing and positioned below the positioning frame, a bearing plate is slidably arranged in the settling tank, and the top wall of the bearing plate is fixedly connected with the; the casing lateral wall is provided with the step groove around the mounting groove periphery, the step inslot is provided with the airtight door that is used for airtight mounting groove, the casing lateral wall just is located mounting groove length direction's one end and rotates and be provided with two retaining ring boards, each retaining ring board wherein one end is provided with the plane of stepping down.

By adopting the technical scheme, after the purification assembly is fixed on the top wall of the bearing plate, the purification assembly can slide in the sedimentation tank along with the bearing plate so as to be propped into the inner cavity of the machine shell, and the positioning frame can be propped against the outer side wall of the purification assembly, so that the position stability of the purification assembly in the inner cavity of the machine shell is ensured; the closed door can plug the opening of the mounting groove by abutting of the fixed ring plate, so that the position stability of the bearing plate and the purification assembly in the inner cavity of the shell is guaranteed; when the maintainer need clean purification subassembly, the maintainer can snatch the one end of accepting the board and with its outside pull, and at this moment, the purification subassembly can be taken out and break away from the casing from the mounting groove to the maintainer is clean and overhauls. The maintainer also can be through detergent clean positioning frame and casing inside wall to reduce and purify the remaining poisonous and harmful spot of subassembly installation department, and then can effectively reduce poisonous and harmful spot and purify the follow-up gaseous influence of subassembly purification, and the guarantee purifies the purification efficiency of subassembly to gas.

Further, accept the board diapire and be provided with two support bars along its width direction, the diapire is provided with the groove that slides that two support bars of being convenient for support into in the subsider.

Through adopting above-mentioned technical scheme, the support bar can be in the inslot cunning that slides, and then is fixed in when the purification subassembly and accepts behind the board roof, can greatly improve the speed and the efficiency that the purification subassembly supports into and breaks away from the casing inner chamber.

Furthermore, the bottom of the supporting bar is rotatably provided with a plurality of guide wheels, and the bottom wall in the sliding groove is provided with a position-aligning groove for limiting the positions of the guide wheels.

By adopting the technical scheme, the guide wheel converts the sliding friction of the support bar in the sliding groove into rolling friction, thereby greatly improving the sliding efficiency of the bearing plate in the settling tank; the position of the guide wheel in the sliding groove can be effectively limited by the position adjusting groove, and the phenomenon that the position of the bearing plate is deviated in the sliding process can be effectively reduced.

Furthermore, the two ends of the bearing plate in the length direction are respectively provided with a directional strip, and the inner side wall of the settling tank and the longitudinal side wall of the settling tank are provided with clamping grooves matched with the directional strips.

Through adopting above-mentioned technical scheme, the orientation strip supports to go into the block inslot and can further inject the position stability of accepting the board when sliding in the subsider, and then has ensured the position stability when purifying component supports and breaks away from the casing inner chamber more effectively.

Further, the longitudinal section of the orientation strip is in a dovetail groove shape.

Through adopting above-mentioned technical scheme, the directional strip of forked tail cell type is kept away from the width that accepts the lateral wall of board direction and is greater than the width of the lateral wall of its other end, and is degressive trend between the two, and it compares in right-angle side, has the advantage that more difficult pine is shaken in the cell body with it adaptation, and then can effectively ensure the stability of directional strip when the block inslot slides.

Furthermore, the inner cavity of the settling tank and the end, far away from the mounting groove, of the settling tank are provided with limiting plates, and the limiting plates and the bearing plates are magnetically attracted.

Through adopting above-mentioned technical scheme, the limiting plate with accept the board magnetism and inhale the back mutually, can effectively inject and accept the position of board in the subsider, and then effectively reduced and accepted the board and freely slided in the subsider, even the outward roll-off phenomenon of opening part from the mounting groove.

Further, the end wall of the bearing plate far away from the limiting plate direction is provided with a placing groove, and a lifting handle is rotationally arranged in the placing groove.

Through adopting above-mentioned technical scheme, carry and pull up the handle and can hang down freely under the action of gravity to guarantee the leakproofness of airtight door in the step groove, when the maintainer need pull out purification assembly, it can snatch can free rotation carry and pull the handle and pull, and then outwards pull out with the board of accepting.

Furthermore, the outer side wall of the sealed door is provided with a preset groove, and an interference ring is arranged in the preset groove.

By adopting the technical scheme, the interference ring can be tightly propped between the sealed door and the step groove, so that the air tightness of the sealed door is improved, and the phenomenon that the air in the shell escapes outwards is reduced.

Furthermore, the inner cavity of the machine shell is vertically provided with a separation plate, and the outer side wall of the separation plate is provided with a positioning groove for limiting the position of the positioning frame.

Through adopting above-mentioned technical scheme, the division board is used for separating two sets of purification subassemblies, and the constant head tank is convenient for location frame to support into to and then make location frame's position tentatively be located the casing inner chamber, its positional stability that can effectively ensure after the purification unit supports into the casing inner chamber.

Furthermore, the positioning frame lateral wall is provided with a plurality of attaching plates perpendicularly, the attaching plates respectively with division board and casing between be provided with the locking piece jointly.

Through adopting above-mentioned technical scheme, the lock piece can run through rigging board and screw thread and screw up in the inside of division board and casing, and it makes positioning frame's lateral wall fixed with the division board, and positioning frame's diapire and the interior diapire of casing fixed, and then has effectively improved positioning frame at the position stability of casing inner chamber to further ensured the position stability of purification subassembly at the casing inner chamber.

In conclusion, the invention has the following beneficial effects:

1. the purification component is abutted into the inner cavity of the casing by the sliding of the bearing plate in the settling tank through the fixation of the purification component and the bearing plate, and the position stability and the operation stability of the purification component in the inner cavity of the casing are ensured through the abutting limit of the positioning frame and the purification component; when the maintainer need clean purification subassembly, the maintainer can snatch the one end of accepting the board and with its outside pull, and then clean and overhaul purification subassembly in order to be quick.

2. The support bar with the guide wheel slides in the sliding groove with the normal groove, so that the sliding efficiency of the bearing plate in the settling tank is improved; the dovetail groove-shaped directional strip slides in the clamping groove to improve the position stability of the bearing plate during displacement; through division board and the laminating board that has the locking piece to effectively ensure the positional stability of positioning frame at the casing inner chamber, and then guarantee purification assembly's operating stability.

Drawings

FIG. 1 is a schematic structural diagram of a purification unit for improving purification efficiency in an embodiment;

FIG. 2 is an exploded view of an embodiment of the present invention showing the positional relationship between the cleaning units and the housing;

FIG. 3 is an exploded view of the embodiment for showing the positional relationship of the bearing plate, the limiting plate and the case;

FIG. 4 is a schematic longitudinal sectional view showing the positional relationship between the receiving plate and the housing in the embodiment;

FIG. 5 is an enlarged view of portion A of FIG. 4 in the example embodiment;

fig. 6 is a schematic longitudinal sectional view showing the positional relationship between the interference ring and the airtight door in the embodiment.

In the figure: 1. a housing; 101. a purification assembly; 102. an air inlet; 103. an air outlet; 104. mounting grooves; 105. a step groove; 106. a settling tank; 107. a sliding groove; 108. a positive position groove; 109. a clamping groove; 110. a limiting plate; 2. a positioning frame; 201. attaching a plate; 202. a locking member; 3. a separator plate; 301. positioning a groove; 4. a bearing plate; 401. a supporting strip; 402. a guide wheel; 403. an orientation bar; 404. a placement groove; 405. lifting the handle; 5. a sealing door; 501. presetting a groove; 502. interference ring rings; 6. a stationary ring plate; 601. and (4) yielding planes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

a purification unit for improving purification efficiency, referring to fig. 1 and 2, comprises a casing 1 and two groups of purification components 101 positioned in the inner cavity of the casing 1. The two ends of the machine shell 1 in the length direction are respectively provided with an air inlet 102 and an air outlet 103, the machine shell 1 sucks air in a pathology laboratory through an air blower (not shown in the figure) arranged in an inner cavity of the machine shell and located at the air inlet 102, and the air is purified by the purifying assembly 101 and then discharged to the outside through the air outlet 103. The purification assembly 101 comprises a plasma purification device and a gas atomization device which are fixed into a whole through bolts, so that harmful substances in gas can be degraded, and peculiar smell gas in the harmful gas can be dissolved.

Referring to fig. 2 and 3, a mounting groove 104 is formed on the outer side wall of the casing 1 along the thickness direction of the casing, and the mounting groove 104 is convenient for a maintenance worker to mount and dismount the purification assembly 101 in the casing 1. The inner cavity of the machine shell 1 is provided with a positioning frame 2, the positioning frame 2 is a rectangular frame formed by spot welding a plurality of strip-shaped aluminum plates, and the side edge of the positioning frame can be abutted against the outer side wall of the purification component 101, so that the position of the purification component 101 in the inner cavity of the machine shell 1 is limited, and the operation stability of the purification component 101 is guaranteed.

Referring to fig. 2, 3 and 4, a partition plate 3 is vertically welded to the inner bottom wall of the casing 1, the partition plate 3 is an iron plate and is located between the two purification units, and a positioning groove 301 for the positioning frame 2 to abut into is formed in the outer side wall of the partition plate. The lateral wall of the positioning frame 2 is perpendicularly welded with a plurality of attaching plates 201, the attaching plates 201 can be attached to the inner bottom walls of the isolation plate 3 and the casing 1 respectively, and the attaching plates 201 are provided with locking pieces 202 between the inner bottom walls of the isolation plate 3 and the casing 1 respectively. The locking member 202 is a bolt that penetrates the attachment plate 201 and is screwed into the partition plate 3 and the interior of the casing 1, so that the positioning frame 2 is stably fixed to the inner cavity of the casing 1.

Referring to fig. 2, 3 and 5, a settling tank 106 is disposed on the inner side wall of the casing 1 and below the positioning frame 2, an inner cavity of the settling tank 106 is communicated with an inner cavity of the casing 1, and a bearing plate 4 is slidably disposed in the inner cavity. The purification assembly 101 is fixed on the top wall of the bearing plate 4 through bolts, and the top wall of the bearing plate 4 is higher than the top of the sedimentation tank 106, so that the convenience is brought to a maintainer to slide the bearing plate 4 in the sedimentation tank 106, so that the purification assembly 101 is pushed into and pulled out of the inner cavity of the machine shell 1 as soon as possible, and the purification assembly is clean and overhauled.

Referring to fig. 3, 4 and 5, two support bars 401 are integrally formed on the bottom wall of the receiving plate 4, and a plurality of guide wheels 402 are rotatably arranged on the bottom wall of each support bar 401, and each guide wheel 402 is a roller. Two sliding grooves 107 are formed in the bottom wall of the settling tank 106, the supporting bars 401 can be abutted to the inner cavity of the sliding grooves 107, and the supporting bars can be quickly displaced by means of the guide wheels 402, so that the speed and the efficiency of the maintenance personnel for abutting and extracting the purifying assembly 101 into and out of the inner cavity of the machine shell 1 are improved.

Referring to fig. 3, 4 and 5, the inner bottom wall of the sliding groove 107 is provided with a positioning groove 108 along the length direction thereof, and the inner width of the positioning groove 108 is slightly larger than the outer width of the guide wheel 402, so that the guide wheel 402 can be conveniently abutted, and the guide wheel 402 is limited to be inclined left and right during the rolling process, thereby improving the position stability of the bearing plate 4 during the sliding process in the inner cavity of the casing 1.

Referring to fig. 3 and 4, the two ends of the bearing plate 4 in the length direction are welded with the orientation strips 403, and the longitudinal section of each orientation strip 403 is in a dovetail groove shape. The inside wall of the settling tank 106 and the longitudinal side wall thereof are provided with a clamping groove 109, the inner diameter of the clamping groove 109 is matched with the outer circumference of the orientation strip 403, so that the orientation strip 403 can be pushed into the inner cavity of the clamping groove 109, and the position stability of the bearing plate 4 during sliding is further improved.

Referring to fig. 3, a limiting plate 110 is adhered to an inner cavity of the settling tank 106 and at an end thereof away from the mounting groove 104, the limiting plate 110 is made of a magnet, and the magnet can magnetically attract the receiving plate 4 made of iron, so as to limit the position of the receiving plate 4 after the receiving plate 4 completely abuts against the inner cavity of the settling tank 106, and reduce the phenomenon that the receiving plate 4 slides out from the opening of the mounting groove 104.

Referring to fig. 3, a rectangular placement groove 404 is opened in an end wall of the receiving plate 4 in a direction away from the stopper plate 110, and a lifting handle 405 is rotatably provided in the placement groove 404 by a pin. The lifting handle 405 freely hangs from the inner cavity of the placing groove 404 under the action of gravity, when the maintenance personnel need to draw the purifying assembly 101 out of the inner cavity of the machine shell 1 for cleaning and maintenance, the maintenance personnel can grab the lifting handle 405 by hands to pull the bearing plate 4, and then the purifying assembly 101 is separated from the inner cavity of the machine shell 1.

Referring to fig. 1, 2 and 3, the outer side wall of the housing 1 is provided with a step groove 105 around the periphery of the mounting groove 104, a sealing door 5 is arranged in the step groove 105, the sealing door 5 is used for sealing the mounting groove 104, the phenomenon that the bearing plate 4 slides out of the mounting groove 104 can be reduced, and the phenomenon that the normal operation of the purification assembly 101 is influenced by external factors can be effectively reduced. A plurality of hinges (not marked in the figure) are arranged between the side wall of the closed door 5 far away from the mounting groove 104 and the outer side wall of the machine shell 1, so that the closed door 5 can be turned by the maintainer conveniently.

Referring to fig. 1 and 2, two fixing ring plates 6 are rotatably disposed at one end of the outer side wall of the casing 1 in the length direction of the mounting groove 104 by means of a pin, and the outer side wall of the fixing ring plate 6 can abut against the outer side wall of the airtight door 5, so as to relatively stably fix the airtight door 5 in the step groove 105. Wherein one end of the fixed ring plate 6 is provided with a yielding plane 601, and an inspector can rotate the fixed ring plate 6 and make the yielding plane 601 face the mounting groove 104, at the moment, the fixed ring plate 6 is separated from the airtight door 5, and the inspector can freely rotate the airtight door 5.

Referring to fig. 6, the outer sidewall of the airtight door 5 is provided with a predetermined groove 501 around the outer periphery thereof, and an interference ring 502 is adhered to the predetermined groove 501. The interference ring 502 is a rubber ring with flexible texture and large static friction coefficient on the outer surface, and is tightly pressed between the airtight door 5 and the step groove 105 through self deformation, so as to improve the air tightness of the airtight door 5 at the installation groove 104 and effectively reduce the phenomenon that the completely purified gas escapes outwards in the casing 1.

The working principle is as follows:

when the maintenance personnel install the purification assembly 101 in the inner cavity of the cabinet 1, the purification assembly 101 can be fixed on the upper surface of the receiving plate 4 by bolts, and then the orientation bar 403 is aligned with and abutted against the engaging groove 109. At this time, the support bar 401 with the guide wheel 402 is pushed into the inner cavity of the slide groove 107 with the alignment groove 108, and the receiving plate 4 is slowly slid in the width direction of the settling tank 106 by the rolling of the guide wheel 402 in the alignment groove 108. When the receiving plate 4 abuts against the limiting plate 110 and is magnetically attracted, the receiving plate 4 is fixed in the inner cavity of the settling tank 106, and the outer side wall of the purifying assembly 101 can abut against the positioning frame 2 and is primarily positioned in the inner cavity of the housing 1.

The airtight door 5 is rotated to completely abut into the step groove 105, and then the fixed ring plate 6 is rotated to make the plane 601 back to the installation groove 104. At this time, the position of the airtight door 5 is fixed in the stepped groove 105, which can effectively reduce the phenomenon that the bearing plate 4 slides out from the opening of the installation groove 104, further effectively limit the position of the purification assembly 101 in the inner cavity of the casing 1, and ensure the stability of the purification assembly 101 during operation.

When the cleaning assembly 101 needs cleaning and maintenance, the maintenance personnel can rotate the fixing ring plate 6 and make the plane 601 face the installation groove 104, and then pull the handle on the airtight door 5 to turn the airtight door 5. The service person can grab the lifting handle 405 and apply a force outward to pull the receiving plate 4 outward, at which time the cleaning assembly 101 can be pulled out of the mounting groove 104 and separated from the cabinet 1, thereby facilitating the cleaning and maintenance of the service person. The maintainer accessible detergent cleans locating frame 2 and casing 1 inside wall to reduce the remaining poisonous and harmful spot of purification subassembly 101 installation department, and then can reduce its influence to purifying subassembly 101 and purifying follow-up gaseous, and the guarantee purifies subassembly 101 to gaseous purification efficiency. The maintainer can also make the attaching plate 201 break away from the inner side wall of the casing 1 by screwing the locking piece 202, and then can take the positioning frame 2 out of the inner cavity of the casing 1, so as to further improve the cleanliness of the inner cavity of the casing 1.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides an improve purification efficiency's purification unit, includes casing (1) and purification subassembly (101) that are located casing (1), casing (1) length direction's both ends are provided with air intake (102) and air outlet (103) respectively, its characterized in that: the outer side wall of the machine shell (1) is provided with a mounting groove (104) convenient for mounting the purification assembly (101) in a penetrating manner along the thickness direction of the outer side wall, a positioning frame (2) used for limiting the position of the purification assembly (101) is arranged in the inner cavity of the machine shell (1), a settling tank (106) is arranged on the inner side wall of the machine shell (1) and below the positioning frame (2), a bearing plate (4) is slidably arranged in the settling tank (106), and the top wall of the bearing plate (4) is fixedly connected with the purification assembly (101); casing (1) lateral wall is provided with step groove (105) around mounting groove (104) periphery, be provided with airtight door (5) that are used for airtight mounting groove (104) in step groove (105), casing (1) lateral wall just is located mounting groove (104) length direction's one end and rotates and is provided with two retainer plate (6), each retainer plate (6) wherein one end is provided with lets plane (601).

2. The purification unit for improving purification efficiency according to claim 1, wherein: accept board (4) diapire and be provided with two support bars (401) along its width direction, the diapire is provided with two slide groove (107) that are convenient for support bar (401) to go into in subsider (106).

3. The purification unit for improving purification efficiency according to claim 2, wherein: the bottom of the support bar (401) is rotatably provided with a plurality of guide wheels (402), and the bottom wall in the sliding groove (107) is provided with a position aligning groove (108) for limiting the positions of the guide wheels (402).

4. The purification unit for improving purification efficiency according to claim 2, wherein: the two ends of the bearing plate (4) in the length direction are respectively provided with an orientation strip (403), and the inner side wall of the settling tank (106) and the longitudinal side wall thereof are provided with a clamping groove (109) matched with the orientation strip (403).

5. The purification unit for improving purification efficiency according to claim 4, wherein: the longitudinal section of the orientation bar (403) is in a dovetail groove shape.

6. The purification unit for improving purification efficiency according to claim 5, wherein: and a limiting plate (110) is arranged at one end of the inner cavity of the settling tank (106) and positioned in the direction away from the mounting groove (104), and the limiting plate (110) and the bearing plate (4) are attracted magnetically.

7. The purification unit for improving purification efficiency according to claim 6, wherein: the end wall of the bearing plate (4) far away from the limiting plate (110) is provided with a placing groove (404), and a lifting handle (405) is rotationally arranged in the placing groove (404).

8. The purification unit for improving purification efficiency according to claim 1, wherein: the outer side wall of the closed door (5) is provided with a preset groove (501), and an interference ring (502) is arranged in the preset groove (501).

9. The purification unit for improving purification efficiency according to claim 1, wherein: the inner cavity of the machine shell (1) is vertically provided with a partition board (3), and the outer side wall of the partition board (3) is provided with a positioning groove (301) used for limiting the position of the positioning frame (2).

10. The purification unit for improving purification efficiency according to claim 9, wherein: the outer side wall of the positioning frame (2) is vertically provided with a plurality of attaching plates (201), and locking pieces (202) are arranged between the attaching plates (201) and the isolation plates (3) and between the attaching plates and the machine shell (1) respectively.