Air purification device for ward

Abstract

The present application provides an air purification device for wards, which relates to the field of air purification technology. An air purification device for wards includes a casing, a primary power assembly is built into the upper part of the casing, an outer filter is built into the lower part of the casing, a flow equalizing mechanism is provided in the outer filter, the flow equalizing mechanism includes a rotating part and a fixed part, the rotating part of the flow equalizing mechanism uses the airflow to generate rotational power, the rotating part of the flow equalizing mechanism turns the airflow in the axial direction, so that the airflow forms a rotation when it flows downward, overflows from the bottom side of the rotating part of the flow equalizing mechanism and flows upward and toward the outer filter, and uses the dynamic spiral rotation of the airflow flowing from bottom to top during the rotation of the flow equalizing mechanism to guide the airflow and at the same time make the airflow uniform and mixed again, so that the airflow has sufficient contact with the outer filter, avoiding the occurrence of dead angles that cause the outer filter to locally produce a weak filtering effect on the airflow, and fully improving the use effect of the outer filter.

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 air flow to directly impact the filter element for filtering. The degree of contact between the air flow 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 casing, the casing being divided into two connected upper and lower parts, wherein the upper part of the casing is built-in with a primary power assembly for extracting air, and the upper part of the casing is symmetrically provided with two windows for air intake and air outlet; the lower part of the casing is built-in with an outer filter element coaxial with the primary power assembly, and a flow equalizing mechanism is coaxially arranged in the outer filter element, the flow equalizing mechanism includes a coaxially arranged rotating part and a fixed part, the rotating part of the flow equalizing mechanism generates a rotational power by using the air flow formed by the primary power assembly, and rotates inside the fixed part of the flow equalizing mechanism, the fixed part of the flow equalizing 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 equalizing mechanism forms a deflection in the axial direction of the air flow delivered by the primary power assembly, and uses its own rotation to evenly deliver the air flow to the outer filter element, and the filtered air flow returns to the upper part of the casing and is discharged from the window for air outlet on the upper part of the casing.

[0005] Preferably, the lower and upper parts of the casing are respectively the lower shell and the 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 circumferential side of the connecting tube, the two windows for air intake and air exhaust symmetrically arranged in the upper shell are respectively the air inlet and the air outlet, and 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 fixed 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 balancing 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 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 and coaxially fixed to the positioning cylinder; the secondary power assembly is detachably and 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 around 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 includes an upper blocking plate and a lower blocking plate that are coaxially arranged, the upper blocking plate and the lower blocking plate have the same structure and size, and the upper blocking plate and the lower blocking plate are both arranged in an annular shape.

[0010] Preferably, the secondary power assembly includes an upper impeller and a lower impeller that are coaxially arranged, the upper impeller and the lower impeller have the same structure and size, and 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 cylinder.

[0013] Preferably, the fixing portion of the flow balancing mechanism includes an intercepting fence, which 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:

[0015] A primary power assembly is used to draw outside air into the upper portion of the casing and form an airflow that blows toward the lower portion of the casing. The torque generated by the airflow passing through the rotating portion of the flow equalizing mechanism causes the rotating portion of the flow equalizing mechanism to rotate inside the outer filter element, causing the airflow to rotate as it flows downward, thereby achieving a certain uniformity in the airflow. During the downward rotational flow, the airflow is affected by the structure of the rotating portion of the flow equalizing mechanism, resulting in secondary mixing and uniformity. The airflow then overflows from the bottom side of the rotating portion of the flow equalizing mechanism in a circumferential direction and flows upward and toward the outer filter element. During the downward flow, the airflow is secondary mixed and uniformed, and the airflow is uniformed again during the process of transitioning from downward flow to upward and circumferential escape flow. During the rotation of the flow equalizing mechanism, the airflow is guided and uniformed again by forming a spiral and rotating dynamic on the airflow flowing from bottom to top. This allows the airflow to fully contact the outer filter element, avoiding dead corners that may cause the outer filter element to have a weak filtering effect on the airflow locally, fully improving the use effect of the outer filter element, and reducing the frequent replacement of the outer filter element due to insufficient use.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. 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 relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of an air purification device for a ward according to an embodiment of the present application;

[0019] Figure 2 This is an exploded view of the structure of an air purification device for a ward according to an embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the internal structure of an air purification device for a ward according to an embodiment of the present application;

[0021] Figure 4 This is an exploded view of the partial structure of an air purification device for a ward according to an embodiment of the present application;

[0022] Figure 5 is a schematic diagram of the internal structure of the inner filtering mechanism according to an embodiment of the present application;

[0023] Figure 6is a partial structural diagram of the inner filtering mechanism according to an embodiment of the present application;

[0024] Figure 7 is a structural exploded diagram of an elevator cabin according to an embodiment of the present application;

[0025] Figure 8 According to the embodiment of this application Figure 4 A is an enlarged schematic diagram.

[0026] 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 filter mechanism; 41. Carrying 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. Filter 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

[0027] 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.

[0028] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] Example 1, as Figures 1-8 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. Figures 1-4As 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 thereof with a connecting tube 111 for conveying the air drawn from the outside into 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 circumference of the connecting tube 111 for conveying the purified airflow from the lower shell 11 into the upper shell 12, and the two windows for air intake and air exhaust symmetrically arranged on the upper shell 12 are respectively an air inlet 121 and an air outlet 122, wherein an air inlet channel 123 is provided 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.

[0030] 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 .

[0031] 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.

[0032] Specifically, such as 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 connected to the inner side of the outer filter element 14, wherein the bottom end of the positioning cylinder 31 is evenly circumferentially provided with a plurality of air outlet holes 311 to facilitate the airflow to flow out of the positioning cylinder 31 from here and enter 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 the airflow from directly entering or escaping from here.

[0033] The vertical shaft 32 is rotatably connected to the lower portion of the housing 1 , and the vertical shaft 32 and the positioning tube 31 are coaxially arranged.

[0034] In a specific embodiment of the present application, the blocking assembly 33 is detachably and coaxially fixed to the positioning cylinder 31, which facilitates the removal or installation of the blocking assembly 33. Specifically, the blocking assembly 33 includes an upper blocking plate 331 and a lower blocking plate 332 that 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)

[0035] The secondary power assembly 34 is detachably and coaxially fixed to the vertical shaft 32. The secondary power assembly 34 and the blocking assembly 33 correspond one to one and are located at the axis center of the blocking assembly 33. Specifically, the secondary power assembly 34 includes a coaxially arranged upper impeller 341 and a lower impeller 342. The upper impeller 341 and the lower impeller 342 have the same structure and size, and the upper impeller 341 and the lower impeller 342 are installed in the same direction. In this way, when air flows through, the upper impeller 341 and the lower impeller 342 will generate a rotational force in the same direction. 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. It should be noted that the arrangement of the upper impeller 341 and the lower impeller 342 between the upper baffle plate 331 and the lower baffle plate 332 makes the air flow channel smaller, increases the flow rate, and makes the upper impeller 341 and the lower impeller 342 have a stronger rotational force.

[0036] like Figure 3 and Figure 4 As shown, multiple 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 multiple 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 a 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 multiple spiral strips 36 on the outer side of the positioning cylinder 31 to rotate synchronously in the same direction, thereby guiding the airflow therein.

[0037] Furthermore, the fixed portion of the flow equalizing mechanism 3 includes an intercepting 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 intercepting fence 35 are rotatably matched, as shown in FIG. Figure 4 As shown, a plurality of radial through grooves are evenly arranged on the interception fence 35. The interception fence 35 supports the external filter element 14 and also has a certain dispersion and uniformity effect on the radial airflow.

[0038] The following describes the use of an air purification device for a ward according to an embodiment of the present application with reference to the accompanying drawings:

[0039] When the air purifier is used in the ward, the air purifier is placed in the ward. More than one can be placed according to the actual situation. The motor 21 is started to drive the fan blades 22 to rotate, and the outside air is sucked in from the air inlet 121. The air is then transported to the lower shell 11 through the connecting tube 111, and specifically to the upper baffle plate 331. The air flow can and can only pass through the upper impeller 341 here. At this time, the air flow is first accelerated due to the sudden decrease in the channel, forming a strong torque on the upper impeller 341 and driving the upper impeller 341 and the vertical shaft 32 to rotate, and then driving the positioning tube 31 and the lower baffle plate connected together to form a whole. The airflow passes through the upper impeller 341 and flows downward in a rotating manner. The airflow is intercepted by the lower baffle plate 332 and can only pass through the lower impeller 342. At this time, the airflow is accelerated again due to the passage, which further provides the rotating lower impeller 342 with rotational power. This ensures that the positioning cylinder 31, the lower baffle 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 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, which is mixed twice and evenly distributed when passing through the secondary power component 34, and evenly distributed again when passing through the air outlet hole 311. Under the action of the rotating spiral strip 36, the airflow entering the positioning cylinder 31 and the outer filter element 14 is evenly distributed again. In this way, the full contact between the airflow and the outer filter element 14 is improved, and the possible filtering dead angle of the outer filter element 14 is 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 angle of the outer filter element 14, resulting in shortened use time and frequent replacement.

[0040] In the related art, the air purification device for wards relies only on the outer filter element 14 for filtering due to the complex air environment in the ward. The workload of the outer filter element 14 is large, and the single filtering effect on the air in the ward is not ideal.

[0041] Example 2: According to some embodiments of this application, Figure 5-Figure 7As shown, an inner filter mechanism 4 is coaxially arranged inside the positioning cylinder 31. 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 fixed 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.

[0042] 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, and the outer fence 412 is coaxially fixed to the outer side of the bottom plate 411 and fits the positioning tube 31. 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.

[0043] Among them, the guide tube 42 is coaxially fixed to the supporting tube 41, and the top of the guide tube 42 is lower than the top of the supporting tube 41; the guide tube 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 to one to the plurality of independent chambers in the supporting tube 41.

[0044] A plurality of lifting cabins 43 are evenly arranged circumferentially on the supporting tube 41, and the plurality of lifting cabins 43 are axially slidingly arranged in the supporting tube 41; the lifting cabin 43 includes a cabin body 431, a partition 432 and a filter medium 433, the cabin body 431 is open 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 inside of the cabin body 431, and the partition 432 divides the cabin body 431 into two parts, upper and lower parts; the filter medium 433 is embedded in the lower part of the cabin body 431, and 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 pass through the bottom ends of the partition 432 and the cabin body 431 respectively.

[0045] It should be noted that the cabin 431 is located between two adjacent baffles 413, that is, in multiple 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 its 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 end of the cabin body 431 will be connected with the air outlet window 423. It can be seen that when and only when the end of the cabin body 431 above the partition 432 is higher than the top plate 422, the air flow can enter from the end of the cabin body 431 above the partition 432, pass through the upper through groove 434 into 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 body 431.

[0046] It should be further explained that the filter medium 433 may be made of filter cotton with a liquid medicine added thereto to disinfect and sterilize bacteria-containing aerosols in the passing airflow, thereby further improving the purification effect.

[0047] 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.

[0048] 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.

[0049] It should be noted that the two adjacent guide rods 44 are respectively located at the convex and concave parts of the undulating end of the undulating ring 452 .

[0050] Therefore, when in use, 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 and rotate synchronously in the same direction. The guide rod 44 on the bottom side is in contact with the upper end surface of the ups and downs ring 452, so during the rotation process, the ups and downs of the upper end surface of the ups and downs 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 convex and concave parts of the ups and downs ring 452, so that 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 measure firstly utilizes the double-layer design of the filter part to perform double filtration on the airflow, reducing the compliance at the outer filter element 14. Secondly, the staggered entry of the airflow in the multiple lifting cabins 43 further forms an effect of uniform distribution of the airflow. Thirdly, it also makes full use of the filter media 433 in the multiple lifting cabins 43 to avoid the occurrence of filtering dead corners. This design will improve the filtering effect of the entire purification device. Secondly, it will also extend the service life of the entire purification device by using alternating purification.

[0051] In the related art, in this air purification device for wards, when the lift cabin 43 generates a lifting action through 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 lift cabin 43 generates a certain friction between the two adjacent baffles 413 due to the use time, the lift cabin 43 may not be able to descend. At this time, multiple lift cabins 43 will remain raised, and the top plate 422 will extend above the open end. This state will allow the air flow to continue to pass through. However, the air flow cannot be guaranteed to pass evenly through each lift cabin 43 in this state. Therefore, the use efficiency of the filter medium 433 in the local lift cabin 43 will be reduced, and the filter medium 433 in the local lift cabin 43 will generate a larger load, which will affect the actual practical effect and service life of the entire purification device.

[0052] Example 3: According to some embodiments of this application, Figure 2 、 Figure 4 and Figure 8 As shown, a plurality of elastic members are provided between the lower blocking plate 332 and the lower supporting tube 41 .

[0053] 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.

[0054] 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 the guide rod 44 to form a rotational movement on the undulating ring 452, that is, the originally rotatable parts are blocked and cannot rotate due to excessive elastic force.

[0055] Therefore, during actual use, the multiple elevator cabins 43 on the bottom layer will form a compression action on their corresponding springs 5 when they rise, and when the guide rods 44 corresponding to the elevator cabins 43 slide from the convex ends of the undulating rings 452 to the concave parts, the elevator cabins 43 will be forced to descend under the influence of the elastic force of the springs 5, which will drive the two guide rods 44 on the top and bottom sides of the elevator cabin 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 elevator cabins 43 on the bottom layer are fixed between the guide rods 44 on the upper layer and the elevator cabins 43 on the upper layer, so that the elevator 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 elevator cabin 43.

[0056] 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 based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0057] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An air purification device for a ward, characterized in that: include: A casing (1), the casing (1) is divided into two connected upper and lower parts, wherein the upper part of the casing (1) is equipped 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 outlet; An outer filter element (14) coaxial with the primary power assembly (2) is built into the lower portion of the housing (1), and a flow balancing mechanism (3) is coaxially arranged inside the outer filter element (14). The flow balancing mechanism (3) comprises a coaxially arranged rotating portion and a fixed portion. The rotating portion 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 portion of the flow balancing mechanism (3). The fixed portion 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 from 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 housing (1) and is discharged from the air outlet window on the upper part of the housing (1).

2. The air purification device for a ward according to claim 1, characterized in that: The lower and upper parts of the housing (1) are respectively a lower housing (11) and an upper housing (12); a connecting tube (111) is connected at the axis of the lower housing (11) and the upper housing (12); a plurality of air delivery pipes (13) are connected between the lower housing (11) and the upper housing (12) and located on the circumference of the connecting tube (111); two windows for air intake and air outlet are symmetrically arranged on the upper housing (12), respectively, an air intake port (121) and an air outlet port (122); an air intake channel (123) is provided between the air intake port (121) and the connecting tube (111).

3. The air purification device for a ward according to claim 2, characterized in that: The primary power assembly (2) comprises a motor (21) and a fan blade (22), wherein 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).

4. The air purification device for a ward according to 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 portion of the housing (1), the vertical shaft (32) and the positioning cylinder (31) being coaxially arranged; A blocking assembly (33), the blocking assembly (33) being detachably and coaxially fixed to the positioning cylinder (31); A secondary power assembly (34), the secondary power assembly (34) is detachably coaxially fixed to the vertical shaft (32), the secondary power assembly (34) and the blocking assembly (33) are in one-to-one correspondence and are located at the axis of the blocking assembly (33); A plurality of spiral strips (36) are uniformly fixed to the outer side of the positioning cylinder (31) in the circumferential direction.

5. The air purification device for a ward according to 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 in sealed rotational engagement.

6. The air purification device for a ward according to claim 4, characterized in that: The blocking assembly (33) comprises an upper blocking plate (331) and a lower blocking plate (332) that are coaxially arranged. The upper blocking plate (331) and the lower blocking plate (332) have the same structure and size, and both the upper blocking plate (331) and the lower blocking plate (332) are arranged in an annular shape.

7. The air purification device for a ward according to claim 6, characterized in that: The secondary power assembly (34) comprises an upper impeller (341) and a lower impeller (342) that are coaxially arranged. The upper impeller (341) and the lower impeller (342) have the same structure and size, and are installed in the same direction.

8. The air purification device for a ward according to 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 according to 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 according to claim 4, characterized in that: The fixed portion of the flow balancing mechanism (3) comprises an intercepting fence (35), the intercepting 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 intercepting fence (35) are rotatably matched.

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