Air purification device for ward

Abstract

The invention provides an air purification device for a ward, and relates to the technical field of air purification. The air purification device for the ward comprises a machine shell, a primary power assembly is arranged in the upper portion of the machine shell, an outer filter element is arranged in the lower portion of the machine shell, a flow equalizing mechanism is arranged in the outer filter element, the flow equalizing mechanism comprises a rotating part and a fixed part, the rotating part of the flow equalizing mechanism generates rotating power through airflow, and the fixed part of the flow equalizing mechanism is fixed to the machine shell. The rotating part of the flow equalizing mechanism turns the airflow in the axial direction, so that the airflow rotates when flowing downwards, overflows from the bottom side of the rotating part of the flow equalizing mechanism and flows upwards and towards the direction of the outer filter element, and the airflow flowing from bottom to top in the rotating process of the flow equalizing mechanism forms a spiral rotating dynamic state; the airflow is guided and uniformly mixed again, so that the airflow is in full contact with the outer filter element, the situation that the local part of the outer filter element generates a weak filtering effect on the airflow due to dead angles is avoided, and the use effect of the outer filter element is fully improved.

Description

Technical Field

[0001] The present application relates to the technical field of air purification, and in particular to an air purification device for a ward. Background Art

[0002] In the hospital ward environment, due to the relatively low immunity of patients and the frequent flow of people in the ward, a large number of pollutants such as germs, dust, harmful gases and odors are easily generated, so the air in the ward needs to be purified.

[0003] However, when facing the complex air environment in the ward, the filter elements in the existing air purification equipment need to be replaced frequently, which brings a large workload to medical staff. In addition, when the filter element purifies the air, it mostly uses the airflow to directly impact the filter element for filtering. In this way, the degree of contact between the airflow and the filter element and the contact range will seriously affect the service life and efficiency of the filter element. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an air purification device for a ward, comprising a housing, the housing being divided into two connected upper and lower parts, wherein the upper part of the housing is built-in with a primary power assembly for air extraction, and the upper part of the housing is symmetrically provided with two windows for air intake and air outlet; the lower part of the housing is built-in with an outer filter element coaxial with the primary power assembly, and a flow equalization mechanism is coaxially arranged in the outer filter element, and the flow equalization mechanism includes a coaxially arranged rotating part and a fixed part, the rotating part of the flow equalization mechanism generates a rotating power by using the airflow formed by the primary power assembly, and rotates inside the fixed part of the flow equalization mechanism, and the fixed part of the flow equalization mechanism is coaxially arranged on the inner side of the outer filter element and supports the outer filter element; the rotating part of the flow equalization mechanism turns the airflow delivered by the primary power assembly in the axial direction, and uses its own rotation to evenly deliver the airflow to the outer filter element, and the filtered airflow returns to the upper part of the housing and is discharged from the window for air outlet on the upper part of the housing.

[0005] Preferably, the lower and upper parts of the casing are respectively a lower shell and an upper shell, the lower shell and the upper shell are connected at the axis with a connecting tube, a plurality of air pipes are connected between the lower shell and the upper shell and located on the peripheral side of the connecting tube, the two windows symmetrically arranged on the upper shell for air intake and air exhaust are respectively an air inlet and an air outlet, wherein an air intake channel is arranged between the air inlet and the connecting tube.

[0006] Preferably, the primary power assembly includes a motor and fan blades, the motor is fixedly connected to the upper shell, and the fan blades are coaxially arranged on the connecting tube and key-connected to the output shaft of the motor.

[0007] Preferably, the rotating part of the flow equalizing mechanism includes a positioning cylinder, a vertical shaft, a blocking assembly, a secondary power assembly and a plurality of spiral strips, the positioning cylinder is coaxially rotatably connected to the inner side of the outer filter element; the vertical shaft is rotatably connected to the lower part of the casing, and the vertical shaft and the positioning cylinder are coaxially arranged; the blocking assembly is detachably coaxially fixed to the positioning cylinder; the secondary power assembly is detachably coaxially fixed to the vertical shaft, the secondary power assembly and the blocking assembly correspond one to one and are located at the axis of the blocking assembly; a plurality of spiral strips are circumferentially and evenly fixed to the outer side of the positioning cylinder.

[0008] Preferably, a plurality of air outlet holes are evenly arranged in the circumferential direction at the bottom end of the positioning cylinder, and the top end of the positioning cylinder and the top end of the outer filter element are sealed and rotatably matched.

[0009] Preferably, the blocking assembly comprises an upper blocking plate and a lower blocking plate which are coaxially arranged, the upper blocking plate and the lower blocking plate have the same structural size, and the upper blocking plate and the lower blocking plate are both arranged in an annular shape.

[0010] Preferably, the secondary power assembly comprises an upper impeller and a lower impeller which are coaxially arranged, the upper impeller and the lower impeller have the same structural size, and the upper impeller and the lower impeller are installed in the same direction.

[0011] Preferably, the upper impeller is coaxially arranged on the upper baffle plate, and the lower impeller is coaxially arranged on the lower baffle plate.

[0012] Preferably, the spiral directions of the plurality of spiral strips are arranged along the axial direction of the positioning tube.

[0013] Preferably, the fixing portion of the flow balancing mechanism comprises an intercepting fence, the intercepting fence is coaxially fixed to the inner wall of the outer filter element, and the spiral strip and the inner wall of the intercepting fence are rotationally matched.

[0014] The beneficial effects of the present invention are: A primary power assembly is used to draw outside air into the upper part of the casing and form an airflow to blow toward the lower part of the casing. The torque formed by the airflow passing through the rotating part of the flow equalizing mechanism is used to rotate the rotating part of the flow equalizing mechanism inside the outer filter element, so that the airflow forms a rotation when it flows downward, which has a certain uniform effect on the airflow; In the process of downward rotation and flow, the airflow is affected by the structure of the rotating part of the flow equalizing mechanism, resulting in secondary mixing and uniformity, and then overflows from the bottom side of the rotating part of the flow equalizing mechanism and flows upward and toward the outer filter element. In the process of downward flow, the airflow is secondary mixed and uniform, and the airflow is uniform again in the process of changing from downward flow to upward and circumferential escape flow; In the process of the flow equalizing mechanism rotating, the airflow flowing from bottom to top is spirally and rotated, and the airflow is guided and the airflow is uniformed and mixed again at the same time. This can make the airflow fully contact the outer filter element, avoid dead angles that cause the outer filter element to locally produce a weak filtering effect on the airflow, fully improve the use effect of the outer filter element, and reduce the frequent replacement of the outer filter element due to insufficient use.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic diagram of the overall structure of an air purification device for a ward according to an embodiment of the present application; Figure 2 is a structural explosion diagram of an air purification device for a ward according to an embodiment of the present application; Figure 3 is a schematic diagram of the internal structure of an air purification device for a ward according to an embodiment of the present application; Figure 4 It is a partial structural explosion diagram of an air purification device for a ward according to an embodiment of the present application; Figure 5 is a schematic diagram of the internal structure of the inner filtering mechanism according to an embodiment of the present application; Figure 6 is a partial structural schematic diagram of the inner filtering mechanism according to an embodiment of the present application; Figure 7 is a structural exploded diagram of an elevator cabin according to an embodiment of the present application; Figure 8 According to the embodiment of the present application Figure 4 A is an enlarged schematic diagram.

[0018] Icons: 1. Casing; 11. Lower casing; 111. Connecting tube; 12. Upper casing; 121. Air inlet; 122. Air outlet; 123. Air inlet channel; 13. Air pipe; 14. External filter element; 2. Primary power assembly; 21. Motor; 22. Fan blades; 3. Flow equalization mechanism; 31. Positioning tube; 311. Air outlet hole; 32. Vertical shaft; 33. Blocking assembly; 331. Upper blocking plate; 332. Lower blocking plate; 34. Secondary power assembly; 341. Upper impeller; 342. Lower impeller Wheel; 35, intercepting fence; 36, spiral strip; 4, inner filtering mechanism; 41, supporting cylinder; 411, bottom plate; 412, outer fence; 413, baffle; 42, guide cylinder; 421, inner fence; 422, top plate; 423, air outlet window; 43, lifting cabin; 431, cabin body; 432, partition; 433, filtering medium; 434, upper through groove; 435, lower through groove; 44, guide rod; 45, up-and-down assembly; 451, positioning ring; 452, up-and-down ring; 5, spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0020] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Embodiment 1, as Figure 1-Figure 8 As shown, an air purification device for a ward according to an embodiment of the present application includes a housing 1, which is divided into two connected upper and lower parts, wherein the upper part of the housing 1 is equipped with a primary power assembly 2 for extracting air, and the upper part of the housing 1 is symmetrically provided with two windows for air intake and air outlet; the lower part of the housing 1 is equipped with an outer filter element 14 coaxial with the primary power assembly 2, specifically, as shown in FIG. Figure 1-Figure 4As shown, the lower and upper parts of the casing 1 are respectively a lower shell 11 and an upper shell 12, and the lower shell 11 and the upper shell 12 are connected at the axis with a connecting tube 111 for conveying the air drawn from the outside to the lower shell 11, and a plurality of air pipes 13 are connected between the lower shell 11 and the upper shell 12 and located on the peripheral side of the connecting tube 111 for conveying the purified airflow from the lower shell 11 to the upper shell 12, and the two windows for air intake and air exhaust symmetrically arranged in the upper shell 12 are respectively an air inlet 121 and an air outlet 122, wherein an air inlet channel 123 is arranged between the air inlet 121 and the connecting tube 111, thereby forming two independent channels for unfiltered air and purified air to avoid contamination of the purified air in the device.

[0022] like Figure 2-Figure 4 As shown, the primary power assembly 2 includes a motor 21 and a fan blade 22 . The motor 21 is fixed to the upper shell 12 , and the fan blade 22 is coaxially arranged on the connecting tube 111 and key-connected to the output shaft of the motor 21 .

[0023] Among them, a flow balancing mechanism 3 is coaxially arranged inside the outer filter element 14, and the flow balancing mechanism 3 includes a coaxially arranged rotating part and a fixed part. The rotating part of the flow balancing mechanism 3 uses the airflow formed by the primary power component 2 to generate rotational power, and rotates inside the fixed part of the flow balancing mechanism 3. The fixed part of the flow balancing mechanism 3 is coaxially arranged on the inner side of the outer filter element 14 and supports the outer filter element 14; the rotating part of the flow balancing mechanism 3 turns the airflow delivered by the primary power component 2 in the axial direction, and uses its own rotation to evenly deliver the airflow to the outer filter element 14. The filtered airflow returns to the upper part of the casing 1 and is discharged from the window for air outlet on the upper part of the casing 1.

[0024] Specifically, Figure 3 and Figure 4 As shown, the rotating part of the flow equalizing mechanism 3 includes a positioning cylinder 31, a vertical shaft 32, a blocking assembly 33, a secondary power assembly 34 and a plurality of spiral strips 36. The positioning cylinder 31 is coaxially rotatably connected to the inner side of the outer filter element 14, wherein a plurality of air outlet holes 311 are evenly arranged circumferentially at the bottom end of the positioning cylinder 31 to facilitate airflow out of the positioning cylinder 31 and into between the positioning cylinder 31 and the outer filter element 14. The top end of the positioning cylinder 31 and the top end of the outer filter element 14 are sealed and rotated to prevent airflow from directly entering or escaping from here.

[0025] The vertical shaft 32 is rotatably connected to the lower part of the housing 1 , and the vertical shaft 32 and the positioning tube 31 are coaxially arranged.

[0026] In a specific embodiment of the present application, the blocking assembly 33 is detachably and coaxially fixed to the positioning cylinder 31, which is convenient for disassembly or installation of the blocking assembly 33. Specifically, the blocking assembly 33 includes an upper blocking plate 331 and a lower blocking plate 332 which are coaxially arranged. The upper blocking plate 331 and the lower blocking plate 332 have the same structure and size. The upper blocking plate 331 and the lower blocking plate 332 are both annularly arranged (such as Figure 3 and Figure 4 shown) Among them, the secondary power component 34 is detachably and coaxially fixed to the vertical shaft 32, and the secondary power component 34 and the blocking component 33 correspond one to one and are located at the axis of the blocking component 33. Specifically, the secondary power component 34 includes an upper impeller 341 and a lower impeller 342 which are coaxially arranged. The upper impeller 341 and the lower impeller 342 have the same structural size, and the upper impeller 341 and the lower impeller 342 are installed in the same direction. In this way, when the airflow passes through, the upper impeller 341 and the lower impeller 342 will generate the same direction of rotational force, wherein the upper impeller 341 is coaxially arranged on the upper blocking plate 331, and the lower impeller 342 is coaxially arranged on the lower blocking plate 332. It should be noted that the arrangement of the upper impeller 341 and the lower impeller 342 between the upper blocking plate 331 and the lower blocking plate 332 makes the channel for the airflow smaller, increases the flow rate, and makes the upper impeller 341 and the lower impeller 342 have stronger rotational force.

[0027] like Figure 3 and Figure 4 As shown, a plurality of spiral strips 36 are evenly fixed to the outer side of the positioning cylinder 31 in the circumferential direction, and the spiral direction of the plurality of spiral strips 36 is arranged along the axial direction of the positioning cylinder 31. It can be seen that when the positioning cylinder 31, the vertical shaft 32, the upper baffle plate 331, and the lower baffle plate 332 that form an integral whole are driven by the upper impeller 341 and the lower impeller 342 to rotate under the power of the airflow, they will rotate synchronously as a whole, which will drive the plurality of spiral strips 36 on the outer side of the positioning cylinder 31 to rotate synchronously in the same direction, thereby guiding the airflow therebetween.

[0028] Furthermore, the fixed part of the flow equalizing mechanism 3 includes an interception fence 35, which is coaxially fixed to the inner wall of the outer filter element 14, and the spiral strip 36 and the inner wall of the interception fence 35 are rotatably matched, such as Figure 4 As shown, a plurality of radial through grooves are evenly arranged on the interception fence 35. The interception fence 35 not only supports the external filter element 14 but also has a certain dispersion and uniformity effect on the radially passing airflow.

[0029] The following describes the use process of an air purification device for a ward according to an embodiment of the present application with reference to the accompanying drawings: When the air purifier is used in the ward, the air purifier is placed in the ward. More than one air purifier can be placed according to the actual situation. The motor 21 is started to drive the fan blades 22 to rotate, so that the outside air is sucked in from the air inlet 121, and the air is transported to the lower shell 11 through the connecting tube 111, and specifically to the upper baffle plate 331. The airflow can and can only pass through the upper impeller 341 here. At this time, the airflow is first accelerated due to the sudden decrease in the channel, and a strong torque is formed on the upper impeller 341, which drives the upper impeller 341 and the vertical shaft 32 to rotate, and then drives the positioning tube 31 and the lower baffle plate connected together to form a whole. 332, the lower impeller 342 and the spiral strips 36 on the outer side of the positioning cylinder 31 rotate synchronously in the same direction. After the airflow passes through the upper impeller 341, it rotates and flows downward. Due to the interception effect of the lower blocking plate 332, the airflow can only pass through the lower impeller 342. At this time, the airflow is accelerated again due to the passage first, and the rotating lower impeller 342 is further provided with rotational power. In this way, the positioning cylinder 31, the lower blocking plate 332, the lower impeller 342 and the spiral strips 36 on the outer side of the positioning cylinder 31 can smoothly form a rotation action. After passing through the lower impeller 342, the airflow rushes to the bottom end of the positioning cylinder 31 and can and can only pass through the air outlet through hole 31 1 forms a circumferential escape and enters the outside of the positioning cylinder 31. Part of the airflow rushes toward the outer filter element 14, and part of the airflow is blocked and will form an upward and rotating axial flow along the rotating spiral strip 36 until it flows to the top between the outer filter element 14 and the positioning cylinder 31. After the airflow cannot continue to flow upward, it can only escape from the outer filter element 14 radially. After being filtered by the outer filter element 14, the airflow enters the cavity of the lower shell 11 outside the outer filter element 14, and enters the upper shell 12 from the air supply pipe 13, and finally returns to the ward from the air outlet 122. During the whole process, the airflow is blocked in the positioning cylinder 31 The obstruction of the component 33 forms a certain mixing, and when passing through the secondary power component 34, it forms two mixing and uniform distribution, and when passing through the air outlet hole 311, it forms a uniform distribution again. Under the action of the rotating spiral bar 36, the airflow entering between the positioning cylinder 31 and the outer filter element 14 forms a uniform distribution again. In this way, the full contact between the airflow and the outer filter element 14 is improved, and the possible filtering dead corners of the outer filter element 14 are reduced, thereby improving the filtering effect of the outer filter element 14, so that the outer filter element 14 can be fully used, avoiding the filtering dead corners of the outer filter element 14, resulting in shortened use time and frequent replacement.

[0030] In the related art, the air purification device for the ward relies only on the outer filter element 14 for filtering because the air environment in the ward is complex. The workload of the outer filter element 14 is large, and the single filtering effect on the air in the ward is not ideal.

[0031] Embodiment 2, according to some embodiments of the present application, such as Figure 5-Figure 7As shown, an inner filter mechanism 4 is coaxially arranged inside the positioning cylinder 31, and the inner filter mechanism 4 includes two groups of filter parts with the same structure and size and an undulating component 45 arranged on the bottom side of the filter part. The two groups of filter parts are coaxially arranged and are respectively located on the lower side of the upper blocking plate 331 and the lower blocking plate 332. The undulating component 45 is fixedly connected to the lower part of the casing 1. The two groups of filter parts rotate with the positioning cylinder 31 and use the undulating component 45 to make the inside of the filter part perform an alternating cyclic lifting action.

[0032] Specifically, the filtering part of the inner filtering mechanism 4 includes a supporting tube 41, a guide tube 42, a plurality of lifting cabins 43 and a plurality of guide rods 44. The supporting tube 41 is detachably fixed in the positioning tube 31 to facilitate the installation and disassembly of the supporting tube 41; specifically, the supporting tube 41 includes a bottom plate 411, an outer fence 412 and a plurality of baffles 413. The bottom plate 411 is arranged in a ring shape, the outer fence 412 is coaxially fixed to the outer side of the bottom plate 411 and fits the positioning tube 31, and the plurality of baffles 413 are evenly fixed circumferentially between the bottom plate 411 and the outer fence 412. The plurality of baffles 413 divide the cavity formed by the bottom plate 411 and the outer fence 412 into a plurality of independent chambers.

[0033] Among them, the guide cylinder 42 is coaxially fixed to the supporting cylinder 41, and the top of the guide cylinder 42 is lower than the top of the supporting cylinder 41; the guide cylinder 42 includes an inner fence 421 and a top plate 422, the inner fence 421 is coaxially fixed to the inner side of the bottom plate 411, and the top plate 422 is coaxially fixed to the top of the inner fence 421, and the height of the top plate 422 is lower than the height of the top of the outer fence 412, and a plurality of air outlet windows 423 are evenly opened on the circumference of the inner fence 421; the plurality of air outlet windows 423 correspond one by one to the plurality of independent chambers in the supporting cylinder 41.

[0034] A plurality of lifting cabins 43 are evenly arranged on the supporting tube 41 in the circumferential direction, and the plurality of lifting cabins 43 are axially slidably arranged in the supporting tube 41; the lifting cabin 43 comprises a cabin body 431, a partition 432 and a filter medium 433, the cabin body 431 is openly arranged on one side facing the inner fence 421, and the cabin body 431 is axially slidably inserted between two adjacent baffles 413; the partition 432 is transversely fixed to the interior of the cabin body 431, and the partition 432 divides the cabin body 431 into two upper and lower parts; the filter medium 433 is embedded in the lower part of the cabin body 431, upper through grooves 434 are evenly arranged on the partition 432, and lower through grooves 435 are evenly arranged at the bottom end of the cabin body 431, and the upper through grooves 434 and the lower through grooves 435 respectively penetrate the bottom ends of the partition 432 and the cabin body 431.

[0035] It should be noted that the cabin 431 is located between two adjacent baffles 413, that is, in a plurality of independent chambers. When the cabin 431 is located at the bottom of the independent chamber, its open end will be connected to the air outlet window 423, and the top of the cabin 431 is not higher than the top plate 422. When the cabin 431 moves upward, the end of the open end located above the partition 432 will be higher than the top plate 422, and the side of the open end located below the partition 432 will be sealed by the inner fence 421. However, the lower through groove 435 at the bottom of the cabin 431 will be connected with the air outlet window 423. It can be seen that when and only when the end of the cabin 431 located above the partition 432 is higher than the top plate 422, the air flow can enter from the end of the cabin 431 located above the partition 432, pass through the upper through groove 434, enter the filter medium 433, and then escape from the lower through groove 435, and be discharged to the inner side of the inner fence 421 from the air outlet window 423 corresponding to the cabin 431.

[0036] It should be further explained that the filter medium 433 can be made of filter cotton with added liquid medicine to disinfect and sterilize bacteria-containing aerosols in the passing airflow, thereby further improving the purification effect.

[0037] Furthermore, one end of the multiple guide rods 44 is respectively fixed to the bottom end of the multiple lifting cabins 43, and the other end of the multiple guide rods 44 passes through the supporting tube 41. It should be noted that, in the two groups of filtering parts, the guide rods 44 located on the top layer extend one end of the supporting tube 41 and abut against the top end of the lifting cabin 43 on the lower layer, and the guide rods 44 located on the lower layer extend one end of the supporting tube 41 and abut against the undulating component 45.

[0038] The undulating assembly 45 includes a positioning ring 451 fixed to the lower part of the casing 1 and an undulating ring 452 coaxially fixed to the positioning ring 451. The upper end surface of the undulating ring 452 is uniformly arranged to undulate up and down in a wave-like shape. The upper end surface of the undulating ring 452 abuts against the guide rod 44 of the lower layer.

[0039] It should be noted that two adjacent guide rods 44 are respectively located at the protrusion and depression of the undulating end of the undulating ring 452 .

[0040] Therefore, when it is used, the rotation of the positioning cylinder 31 will synchronously drive the upper and lower groups of filter parts to rotate synchronously in the same direction, that is, the upper and lower supporting cylinders 41 will rotate synchronously in the same direction, so that the remaining two groups of guide rods 44 will follow the synchronous rotation in the same direction. The guide rod 44 on the bottom side is in contact with the upper end surface of the heave ring 452, so during the rotation process, the heave of the upper end surface of the heave ring 452 will cause the guide rod 44 to rise and fall. As a result, the lifting cabin 43 corresponding to the guide rod 44 will undergo a reciprocating lifting action in the process of following the rotation of the supporting cylinder 41, and the two adjacent guide rods 44 are respectively located at the protrusion and depression of the heave ring 452, so the two adjacent lifting cabins 43 will be lifted and lowered. 3 forms a relative lifting action, so that the multiple lifting cabins 43 in the entire carrier tube 41 will form a staggered lifting during the rotation process, so the airflow will staggeredly enter the multiple lifting cabins 43. This first uses the double-layer design of the filter part to double filter the airflow to reduce the compliance at the outer filter element 14. Secondly, the staggered entry of the airflow in the multiple lifting cabins 43 further forms a uniform distribution effect on the airflow. Thirdly, the filter media 433 in the multiple lifting cabins 43 are fully utilized to avoid filtering dead corners. This design will improve the filtering effect of the entire purification device. Secondly, it will also use alternating purification to extend the service life of the entire purification device.

[0041] In the related art, in this air purification device for wards, when the lifting cabin 43 is lifted and lowered by the ups and downs between the guide rod 44 and the ups and downs ring 452, its descending action can only be achieved by gravity. Once the lifting cabin 43 generates a certain friction between two adjacent baffles 413 due to the use time, the lifting cabin 43 may not be able to descend. At this time, multiple lifting cabins 43 will remain raised, and the top plate 422 will extend above the open end. This state will allow the airflow to continue to pass through, but the airflow cannot be guaranteed to pass evenly through each lifting cabin 43 in this state, so the use efficiency of the filter medium 433 in the local lifting cabin 43 will be reduced, and the filter medium 433 in the local lifting cabin 43 will produce a larger load, which will then affect the actual practical effect and use cycle of the entire purification device.

[0042] Embodiment 3, according to some embodiments of the present application, such as Figure 2 , Figure 4 and Figure 8 As shown, a plurality of elastic members are arranged between the lower blocking plate 332 and the lower supporting tube 41 .

[0043] The multiple elastic members are springs 5, which are respectively sleeved on the multiple guide rods 44 of the upper layer, one end of the spring 5 abuts against the bottom plate 411 of the upper layer, and the other end of the spring 5 abuts against the cabin body 431 of the lower layer.

[0044] It should be noted that the elastic force value of the multiple springs 5 ​​is smaller than the torque value of the secondary power component 34 that causes the rotating part of the current equalizing mechanism 3 to rotate, so as to avoid the torque of the guide rod 44 rotating due to excessive elastic force, which makes it impossible for itself to form a rotation action on the undulating ring 452, that is, the originally rotatable parts are blocked and cannot rotate due to excessive elastic force.

[0045] Therefore, during specific use, when the multiple lift cabins 43 on the bottom layer are rising, they will form a compression action on the corresponding springs 5. When the guide rods 44 corresponding to the lift cabins 43 slide from the raised ends of the undulating rings 452 to the recessed parts, the lift cabins 43 will be forced to descend under the influence of the elastic force of the springs 5, thereby driving the two guide rods 44 on the top and bottom sides of the lift cabins 43 to descend, so that the guide rods 44 on the bottom side can slide smoothly on the upper end surface of the undulating ring 452. At the same time, the lift cabins 43 on the bottom layer are fixed between the guide rods 44 on the upper layer and the lift cabins 43 on the upper layer, so that the lift cabins 43 on the two layers will all complete the staggered lifting action, so as to ensure that the airflow can form a uniform circulation in the staggered lifting cabins 43, and ensure the full utilization of the filter medium 433 in each lift cabin 43.

[0046] It should be noted that the specific models and specifications of the outer filter element 14, motor 21, fan blades 22, upper impeller 341, lower impeller 342, filter medium 433 and spring 5 need to be selected and determined according to the actual specifications of the device, etc. The specific selection and calculation method adopts the existing technology in the field, so it will not be described in detail.

[0047] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An air purification device for a ward, characterized in that: include: A casing (1), the casing (1) being divided into two connected upper and lower parts, wherein the upper part of the casing (1) is internally provided with a primary power assembly (2) for extracting air, and the upper part of the casing (1) is symmetrically provided with two windows for air intake and air exhaust; An outer filter element (14) coaxial with the primary power assembly (2) is built into the lower part of the casing (1); a flow balancing mechanism (3) is coaxially arranged inside the outer filter element (14); the flow balancing mechanism (3) comprises a coaxially arranged rotating part and a fixed part; the rotating part of the flow balancing mechanism (3) generates rotational power by utilizing the airflow formed by the primary power assembly (2) and rotates inside the fixed part of the flow balancing mechanism (3); the fixed part of the flow balancing mechanism (3) is coaxially arranged inside the outer filter element (14) and supports the outer filter element (14); The rotating part of the flow equalizing mechanism (3) deflects the airflow delivered by the primary power assembly (2) in the axial direction, and utilizes its own rotation to evenly deliver the airflow to the outer filter element (14); the filtered airflow returns to the upper part of the casing (1) and is discharged from the air outlet window at the upper part of the casing (1).

2. An air purification device for a ward as claimed in claim 1, characterized in that: The lower part and the upper part of the casing (1) are respectively a lower casing (11) and an upper casing (12); a connecting tube (111) is connected at the axis of the lower casing (11) and the upper casing (12); a plurality of air delivery pipes (13) are connected between the lower casing (11) and the upper casing (12) and are located on the peripheral side of the connecting tube (111); two windows for air intake and air outlet that are symmetrically arranged on the upper casing (12) are respectively an air intake port (121) and an air outlet port (122); an air intake passage (123) is arranged between the air intake port (121) and the connecting tube (111).

3. An air purification device for a ward as claimed in claim 2, characterized in that: The primary power assembly (2) comprises a motor (21) and a fan blade (22); the motor (21) is fixedly connected to the upper shell (12); the fan blade (22) is coaxially arranged on the connecting tube (111) and key-connected to the output shaft of the motor (21).

4. The air purification device for a ward as claimed in claim 1, characterized in that: The rotating part of the current balancing mechanism (3) comprises: A positioning cylinder (31), the positioning cylinder (31) being coaxially rotatably connected to the inner side of the outer filter element (14); A vertical shaft (32), the vertical shaft (32) being rotatably connected to the lower part of the housing (1), the vertical shaft (32) and the positioning cylinder (31) being coaxially arranged; A blocking component (33), the blocking component (33) being detachably coaxially fixed to the positioning cylinder (31); A secondary power assembly (34), the secondary power assembly (34) being detachably coaxially fixed to the vertical shaft (32), the secondary power assembly (34) corresponding to the blocking assembly (33) one by one and being located at the axis of the blocking assembly (33); A plurality of spiral strips (36), wherein the plurality of spiral strips (36) are evenly fixed to the outer side of the positioning tube (31) in the circumferential direction.

5. An air purification device for a ward as claimed in claim 4, characterized in that: The bottom end of the positioning cylinder (31) is evenly provided with a plurality of air outlet holes (311) in a circumferential direction, and the top end of the positioning cylinder (31) and the top end of the outer filter element (14) are sealingly rotatably matched.

6. The air purification device for a ward as claimed in claim 4, characterized in that: The blocking assembly (33) comprises an upper blocking plate (331) and a lower blocking plate (332) which are coaxially arranged, the upper blocking plate (331) and the lower blocking plate (332) having the same structural size, and both the upper blocking plate (331) and the lower blocking plate (332) being arranged in an annular shape.

7. An air purification device for a ward as claimed in claim 6, characterized in that: The secondary power assembly (34) comprises an upper impeller (341) and a lower impeller (342) which are coaxially arranged, the upper impeller (341) and the lower impeller (342) having the same structural size, and the upper impeller (341) and the lower impeller (342) having the same installation direction.

8. An air purification device for a ward as claimed in claim 7, characterized in that: The upper impeller (341) is coaxially arranged on the upper baffle plate (331), and the lower impeller (342) is coaxially arranged on the lower baffle plate (332).

9. The air purification device for a ward as claimed in claim 4, characterized in that: The spiral directions of the plurality of spiral strips (36) are arranged along the axial direction of the positioning cylinder (31).

10. The air purification device for a ward as claimed in claim 4, characterized in that: The fixed portion of the flow equalizing mechanism (3) comprises an interception fence (35), the interception fence (35) is coaxially fixed to the inner wall of the outer filter element (14), and the spiral strip (36) and the inner wall of the interception fence (35) are rotationally matched.

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