Ventilation device with filter cartridge

Abstract

The utility model discloses a kind of ventilation devices with filter core, it is related to ventilation technical field, the ventilation device includes air pipe;Bearing pipe is connected between two adjacent air pipes, and its inside embeddedly plugs into filter core, for the air that flows through bearing pipe is filtered.The ventilation device with filter core described in the utility model, because it is formed in the passageway of two ends by the through type slide rail through bearing pipe, when replacing, new filter core can be pushed from the side of bearing pipe to its inside, and the filter core in inside is extruded out, so that replacement is completed, and in the whole process of replacement, filter core is always covered on the flow path of air pipe, reduce the leakage of gas in air pipe, so, effectively solve the technical problem that existing air pipe needs to stop when using, replacing, further realize that air pipe filter core is replaced without stopping, to facilitate guaranteeing that air pipe continues and efficiently work, simultaneously can also reduce the complexity of replacement.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology, and in particular to a ventilation device with a filter element. Background Technology

[0002] For places with high air quality requirements, such as libraries and farms, ventilation devices are needed to circulate indoor and outdoor air in order to ensure air cleanliness and maintain a temperature and humidity-sensitive environment. At the same time, they are used to prevent pollutants from entering. This is achieved by using filters installed on the devices to remove dust or impurities from the air. In particular, for farms, livestock excrement produces a lot of irritating odors, and long-term inhalation can easily cause discomfort and respiratory infections. Furthermore, it can easily spread diseases such as epidemics through the air. Therefore, ventilation and filtration of air in such farms are especially important.

[0003] Currently, a duct filter is disclosed in Chinese patent application number CN202111260141.3, relating to the field of ventilation duct dust removal technology. This duct filter includes a frame and a filter assembly. The frame has square filter holes, with connecting flanges at both ends. The filter assembly includes a support member and a filter screen. The support member is annular and fixedly connected to the outer periphery of the filter screen. The support member passes through one first sidewall of the filter hole and is sealed. The support member slides against and seals against two opposite second sidewalls of the filter hole. The support member can slide into the filter hole and abut against and seal against the other first sidewall of the filter hole. Although this duct filter can be installed at the air inlet of equipment and is easy to clean and maintain, it overlooks some common problems caused by replacement, namely, the need to stop the machine during replacement, otherwise air leakage is likely.

[0004] However, during the implementation of the above technical solution, at least the following technical problems were discovered:

[0005] Inability to fully utilize filters and the need for shutdown during replacement: Existing ductwork filters require periodic replacement due to their limited adsorption capacity to ensure stable air filtration. However, existing duct filter replacements are typically scheduled periodically, based on an estimate of the filter's maximum adsorption capacity and air quality. For example, in clean environments, replacements may be needed every two or three months, or even longer; while in polluted environments, replacements may be required every two weeks to a month. However, due to varying environmental conditions and different start times for ductwork, filters often fail to reach their maximum adsorption capacity or have already far exceeded it. The current system requires a certain time limit for replacement, which severely impacts the rational and full utilization of resources. Furthermore, during replacement, the used filter cartridge must be removed from the duct before the new one is inserted. This causes dusty air to spread outwards through the filter cartridge's location. To solve this problem, the system needs to be shut down. However, in certain locations such as underground parking garages and subways, stopping the fan reduces oxygen levels, seriously affecting the safety of these environments. Existing solutions involve installing two parallel ventilation ducts that operate alternately, which wastes energy. Therefore, we propose a ventilation device with a built-in filter cartridge. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a ventilation device with a filter element, solving the technical problems that existing air ducts cannot be fully utilized during use and require shutdown for replacement.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A ventilation device with a filter element, the ventilation device comprising:

[0011] Air ducts;

[0012] The carrier duct connects two adjacent air ducts and has a filter element embedded inside it to filter the air flowing through it.

[0013] The inner walls of both sides of the carrier tube are provided with a slide rail, and the filter element can be inserted into the carrier tube along the slide rail and supported by the retractable support on the slide rail.

[0014] When the filter element is pushed, the support member in contact with the filter element retracts, and the filter element moves outward along the slide rail.

[0015] Preferably, the support includes a sleeve connected to the slide rail, and the front opening of the sleeve corresponds to the through hole on the outer wall of the slide rail. A fitting wheel is embedded inside the sleeve, and the fitting wheel is connected to the inside of the sleeve by a spring.

[0016] The bonding wheel is located on the side of the spring facing the inner wall of the slide rail, and the bonding wheel is located on the movement path of the filter element. When the filter element is squeezed by an external force in the direction of the bonding wheel, the bonding wheel retracts into the sleeve, and the spring connected to the rear end of the bonding wheel is in a stored state.

[0017] Preferably, the rear end of the sleeve is connected to a screw via a thread, and one end of the screw extends out of the sleeve and is connected to a knob; the other end is located inside the sleeve and is connected to a disc-shaped extrusion plate via a bearing.

[0018] The screw is connected to a spring via a compression plate, and when the screw rotates, it can drive the compression plate to extend and retract inside the sleeve.

[0019] Preferably, the support members are symmetrically arranged on the inner wall of the slide rail, and the slide grooves opened on the outer wall of the filter element correspond one-to-one with the support members. The edge of the filter element is chamfered, and the slide grooves extend to the position of the chamfer.

[0020] The bonding wheel rotates in the same direction as the length of the groove. When the filter element is inserted into the carrier tube, the bonding wheel slides along the groove on the outer wall of the filter element.

[0021] Preferably, one end of the slide rail is connected to a connecting rod, and the connecting rod corresponds to the outlet of the slide rail. The outer wall of the filter element is provided with a hook corresponding to the connecting rod. When the filter element slides out along the slide rail, the hook on the filter element can hook onto the connecting rod.

[0022] Preferably, one end of the hook is connected to the central rod on the outer wall of the filter element via a torsion spring, and the hook flips away from the filter element under the torsion of the torsion spring.

[0023] The slide rail has a corresponding interface at both ends, and the edge of the interface is arc-shaped. When the filter element slides along the slide rail, the hook flips towards the side closer to the filter element under the squeezing action of the interface.

[0024] The connecting rod corresponds vertically to the interface. When the hook moves out of the interface, the hook flips away from the filter element under the action of the torsion spring and hooks with the connecting rod at the opening of the interface.

[0025] Preferably, the outer wall of the filter element is provided with an extension block, and the extension block corresponds to the interface on the carrier tube, which can seal the interface; the top of the extension block is provided with a reserved groove, and the center rod is located in the reserved groove.

[0026] Preferably, the filter element includes a rectangular frame-shaped housing, and a filter layer is embedded inside the housing. When the filter element is inserted into the carrier tube, the filter layer corresponds to the channel of the carrier tube.

[0027] (III) Beneficial Effects

[0028] 1. Because a through-type sliding rail passes through the carrier tube, forming channels at both ends, during replacement, the new filter element can be pushed from one side of the carrier tube inwards. This thrust forces the filter element originally inserted inside the carrier tube out, thus completing the replacement. Throughout the replacement process, the filter element always covers the flow path of the air duct. Therefore, it can not only filter the air flowing through the air duct in real time, but also reduce the leakage of gas inside the air duct. Thus, it effectively solves the technical problem that existing air ducts require shutdown for replacement, thereby realizing air duct filter element replacement without shutting down the system. This ensures continuous and efficient operation of the air duct, while also reducing the cumbersomeness of replacement.

[0029] 2. By utilizing a retractable support component to support the filter cartridge, as dust and other impurities accumulate on the cartridge, its weight gradually increases. When this weight exceeds the support component's critical value, the support component retracts, causing the filter cartridge inserted into the carrier tube to fall downwards. This method allows for the pre-placement of a new filter cartridge on top of the one already inserted into the carrier tube. When the inserted filter cartridge slides out, the new cartridge falls into the carrier tube, completing the replacement. This achieves automatic filter cartridge replacement. Furthermore, by incorporating a support force adjustment structure within the support component, the support force on the filter cartridge can be adjusted. This allows for flexible adjustment of the replacement load limit as needed, solving the technical problem of traditional ducts not being able to fully utilize their capacity. Therefore, the filter cartridge can be replaced when it reaches the specified load capacity, laying the foundation for subsequent fully automatic replacement.

[0030] 3. By opening an interface at the edge of the carrier tube, with the end of the interface corresponding to the connecting rod on the carrier tube, and setting a hook at the corresponding position of the filter element, the hook is kept flipped outward under the action of a torsion spring. As the filter element slides along the slide rail, the hook on it slides along the interface. When the hook moves to the interface, it will hook with the connecting rod at the end of the interface, thereby completing the storage of the filter element, so as to facilitate subsequent recycling and replacement, and further improve the implementation of fully automatic replacement. Attached Figure Description

[0031] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0032] Figure 1 This is an overall structural diagram of an embodiment of the present utility model;

[0033] Figure 2 This is an exploded view of the overall structure in an embodiment of this utility model;

[0034] Figure 3 This is a schematic diagram of the connection structure between the filter element and the carrier tube in an embodiment of this utility model;

[0035] Figure 4 This is a schematic diagram of the front and back structures of the bearing tube in an embodiment of this utility model;

[0036] Figure 5 This is a structural diagram of the support member in an embodiment of this utility model;

[0037] Figure 6 This is an exploded structural diagram of the support member in an embodiment of this utility model;

[0038] Figure 7 This is a structural diagram of the filter element in an embodiment of the present invention;

[0039] Figure 8 This is an exploded view of the filter element in an embodiment of the present invention;

[0040] Figure 9 This is an exploded view of the edge retaining strip in an embodiment of this utility model;

[0041] Figure 10 This is one of the filter element insertion state diagrams in the embodiments of this utility model;

[0042] Figure 11 This is the second diagram showing the filter element insertion state in the embodiments of this utility model;

[0043] Figure 12 This is the third diagram showing the filter element insertion state in the embodiments of this utility model;

[0044] Figure 13 This is a schematic diagram of the horizontal air duct in an embodiment of this utility model;

[0045] Figure 14 This is a schematic diagram of the replacement of the transverse filter element in an embodiment of this utility model.

[0046] Legend:

[0047] 1. Air ducts;

[0048] 2. Bearing pipe; 21. Pipe body; 22. Flange; 23. Slide rail; 24. Extension edge; 25. Support component; 251. Sleeve; 252. Sliding block; 253. Screw; 254. Spring; 255. Fitting wheel; 26. Connecting interface; 27. Connecting rod;

[0049] 3. Filter element; 31. Housing; 32. Filter layer; 33. Slide groove; 34. Edge strip; 341. Extension block; 342. Reserved groove; 343. Center rod; 344. Torsion spring; 35. Hook. Detailed Implementation

[0050] This application provides a ventilation device with a filter element, which effectively solves the technical problems of existing air ducts not being fully utilized and requiring shutdown for replacement. In the existing air duct, a through-type slide rail passes through the carrier pipe, forming channels at both ends. During replacement, the new filter element is pushed from one side of the carrier pipe inward, and the original filter element inserted inside the carrier pipe is squeezed out by the thrust, thus completing the replacement. Throughout the replacement process, the filter element always covers the flow path of the air duct. Therefore, it can not only filter the air flowing through the air duct in real time, but also reduce the leakage of gas inside the air duct. This allows for the replacement of the air duct filter element without shutting down the system, so as to ensure the continuous and efficient operation of the air duct and reduce the cumbersomeness of replacement.

[0051] Example 1: The technical solution in this application example effectively solves the technical problem that existing air ducts cannot be fully utilized during use and require downtime for replacement. The overall idea is as follows:

[0052] To address the problems existing in the prior art, this utility model provides a ventilation device with a filter element. This ventilation device mainly falls into two categories: one, such as... Figure 1 As shown, in the horizontal position, the filter element 3 is replaced by inserting it from top to bottom. However, for the duct 1 installed on the ceiling, it is inserted from bottom to top until the filter element 3, originally inserted into the carrier tube 2, is squeezed out. It also needs to be moved above the support member 25 so that the support member 25 can support the filter element 3. Based on this, we subsequently use the gravity of the filter element 3 itself and the dust adsorbed on it as the driving force for replacement. Secondly, there is the vertical position, as shown... Figure 13As shown, in this state, since gravity cannot be used, an external pushing force is required to push out the filter element 3 inserted into the carrier tube 2. As can be seen from the above, whether in a horizontal or vertical state, the filter element 3 is replaced by pushing. Therefore, robots or mechanical equipment can be used to replace manual operation. The overall installation process is simple and can be completed by pushing, which can greatly reduce the difficulty of replacement and installation, making it easier for robots to operate.

[0053] In addition to the above, we have also made two major improvements to the replacement of filter element 3. First, we have set up a support member 25 that can adjust the support force to limit the filter element 3 inserted into the carrier tube 2. Second, for the horizontally positioned duct 1, the weight of the filter element 3 and the impurities it adsorbs can be used to adjust the replacement threshold. That is, when the weight of the filter element 3 and the impurities it adsorbs exceeds the support force of the support member 25, the filter element 3 will separate from the carrier tube 2 under the action of gravity. Furthermore, if automatic replacement is required, the support force threshold of the support member 25 must also include the weight of the filter element 3 placed on it. Figure 1 As shown; of course, to prevent the filter element 3 from coming into contact with the external environment before and after replacement, a protective cover can also be installed on it, as long as it can cover the filter element 3. Since this part is not our focus of improvement, we will not go into details here; secondly, the replaced filter element 3 is temporarily fixed, that is, a place is provided for the replaced filter element 3 to facilitate subsequent recycling, and at the same time to prevent the replaced filter element 3 from falling off during replacement. The specific structure is as follows:

[0054] For example, let's take a square duct 1. Figure 1 As shown, during installation, simply install the same size and shape of the carrier pipe 2 between the air ducts 1, using the flanges 22 on the air ducts 1 and 2 to align them, and finally connect them with bolts. This completes the installation of the carrier pipe 2. Figure 2 As shown, after installation, the carrier pipe 2 is connected to the air duct 1. The filter element 3 inside it is located on the air flow path inside the air duct 1. Therefore, air is transported through the air duct 1 and filtered by the filter element 3 inside the carrier pipe 2, thus completing the basic filtration function. The filter element 3 consists of a rectangular frame (i.e., housing 31) and filter layers 32 closely arranged inside the frame, as shown. Figure 7 and Figure 8 As shown, and to ensure the stability of air filtration, when the frame is inserted into the carrier pipe 2, the inner wall of the frame corresponds to the inner wall of the air duct 1 and has the same shape, as shown. Figure 10 As shown, this allows air to flow steadily through the filter element 3, while also improving the fit between the filter element 3 and the carrier tube 2.

[0055] The carrier pipe 2 (including the pipe body 21) is one of the important improvements in this application. In the use of conventional filter elements 3, we found that although most filter elements 3 are installed using a plug-in method for easy replacement, the plug-in method is a single-sided opening, meaning it's open on one side of the duct 1 and closed on the other. This means that the replacement and removal of the filter element 3 can only be done on one side of the duct 1. Therefore, when replacing it, the used filter element 3 needs to be pulled out of the duct 1. At this time, because the opening on the surface of the duct 1 lacks a seal, air will pass out through the opening, causing dust and other impurities on the inner wall of the duct 1 to fly out. This is because when the filter element 3 filters air, the air needs to pass through it. To remove impurities from the air, the filter element 3 requires a very dense filter screen and multiple layers, thus the filter element 3 acts as a barrier to airflow. When it is removed, the airflow speed increases; and to avoid… To avoid this problem, our common method is to temporarily cut off the power to duct 1, that is, to stop duct 1 from working for a period of time so that workers or robots can replace the filter element 3 on it. However, in some special scenarios, such as subway stations and underground parking garages, where oxygen is supplied by duct 1, if it stops working, the oxygen content in the air will gradually decrease, causing temporary hypoxia for personnel, which seriously affects the normal use of duct 1 and personal safety. The current solution is to install two complementary duct 1 channels. When the filter element 3 of one duct 1 channel needs to be replaced, the channel containing duct 1 is closed and the complementary duct 1 channel is opened, which seriously affects the rational use of resources. Secondly, there is another method, which is to enlarge the adjacent or other duct 1 to make up for the deficiency caused by the duct 1. However, the replacement not only requires frequent opening and closing, but also causes load problems for duct 1.

[0056] Our designed support tube 2 is open at both ends, that is, one opening is made on each side of the support tube 2, and a slide rail 23 is set on the inner wall of the support tube 2, with the slide rail 23 located between the two openings, such as... Figure 3 and Figure 4 As shown, when the filter element 3 is inserted into the support tube 2, it can slide along the slide rail 23, thus sliding in from one opening on one side of the support plate 2 and out from the other opening. This allows for replacement of the filter element 3 inside the support tube 2 by inserting the new filter element 3 from one side of the support tube 2 and squeezing it into place. Figures 10 to 12 As shown, the filter element 3 that needs to be replaced is removed from the carrier tube 2. During this process, the opening on the carrier tube 2 does not need to be blocked by the filter element 3, so there will be no air leakage. At most, it can only flow out from the gap. In this way, the purpose of replacing the filter element 3 without stopping the machine can be achieved, so as to meet the two conditions of replacement and not stopping the machine at the same time.

[0057] The bonding wheel 255 rotates in the same direction as the length of the groove 33. When the filter element 3 is inserted into the carrier tube 2, the bonding wheel 255 slides along the groove 33 on the outer wall of the filter element 3.

[0058] The support member 25, in order to support and limit the filter element 3 inserted into the carrier pipe 2, so as to ensure that the filter screen in the filter element 3 is connected to the air duct 1, has a rectangular extension side 24 near the opening of the carrier pipe 2, and the extension side 24 corresponds to the slide rail 23 on the carrier pipe 2. Figure 4 As shown, it not only provides support and load-bearing capacity for the support member 25, but also facilitates the insertion of the filter element 3 into the support tube 2, as shown. Figures 10 to 12 As shown, the support member 25 mainly consists of a bonding wheel 255 and a sleeve 251 for housing the bonding wheel 255. One side of the bonding wheel 255 is connected to the sleeve 251 via a spring 254. The front opening of the sleeve 251 corresponds to the through hole on the outer wall of the slide rail 23, so that the bonding wheel 255 can enter the movement path of the filter element 3. In this way, the bonding wheel 255 extends outward under the pushing force of the spring 254, that is, it is distributed on the movement path of the filter element 3, thus blocking the movement of the filter element 3. Figure 5 and Figure 6 As shown, the bonding wheel 255 is mounted on the sliding block 252 via a rotating shaft. A notch is provided at the front end of the sliding block 252, and the bonding wheel 255 is installed in the notch. The rotating shaft passing through the bonding wheel 255 is connected to the inner walls of both sides of the notch, allowing the bonding wheel 255 to rotate freely. Taking a horizontally positioned duct 1 as an example... Figure 10 As shown in the enlarged view, the filter element 3 inserted into the carrier tube 2 corresponds to and adheres to the outer surface of the bonding wheel 255. The spring force 254 acting on the bonding wheel 255 supports the filter element 3. As the impurities adsorbed on the filter screen gradually increase, the overall weight of the filter element 3 continuously increases. When the sum of the weight of the filter element 3 itself, the weight of the impurities on it, and the weight of the top filter element 3 exceeds the supporting force that the bonding wheel 255 can exert on the filter element 3, the bonding wheel 255 is squeezed into the sleeve 251 for retraction and expansion. The spring 254 connected to the rear end of the bonding wheel 255 is in a stored state. At this time, the filter element 3 inserted into the carrier tube 2 slides downwards, thus discharging from the other end of the carrier tube 2. Simultaneously, a new filter element 3 placed on top of the original filter element 3 moves into the carrier tube 2. Figure 12 As shown, at this time, the contact wheel 255 on the extension edge 24 extends under the action of the spring 254, thereby blocking the filter element 3, thus completing the automatic replacement of the filter element 3. Afterwards, the robot only needs to remove the replaced filter element 3.

[0059] In addition, in order to ensure that the filter element 3 can be accurately inserted into the carrier tube 2, a groove 33 is opened on the outer wall of the filter element 3, and the groove 33 corresponds one-to-one with the support member 25 on the carrier tube. Furthermore, the edge of the filter element 3 has a chamfer, and the groove 33 extends to the chamfer position. In this way, when the contact wheel 255 is subjected to extrusion pressure, it can retract into the sleeve 251 along the chamfer.

[0060] When duct 1 is in a longitudinal position, such as Figure 13 and Figure 14 As shown, a pushing force that is greater than the resistance that the bonding wheel 255 can apply to the filter element 3 is required. At this time, the filter element 3 inserted inside the carrier tube 2 slides to the other side, so that the other side of the carrier tube 2 is discharged.

[0061] To further adapt to environmental requirements, specifically by adjusting the load-bearing capacity of the support component 25 based on the weight of the filter element 3 and the upper limit of impurities it can adsorb, a screw 253 is threadedly connected to the rear end of the sleeve 251. One end of the screw 253 extends out of the sleeve 251 and is connected to a knob; the other end is located inside the sleeve 251 and is connected to a disc-shaped pressing plate via a bearing. Rotating the knob moves the screw 253 either inward or outward from the sleeve 251, thus adjusting the load. The screw 253 is connected to the spring 254 through the extrusion plate inside the sleeve 251. When the screw 253 rotates, it can drive the extrusion plate to extend and retract inside the sleeve 251, thereby adjusting the thrust of the spring 254 on the contact wheel 255. This indirectly changes the support force of the support member 25 on the filter element 3. That is, the sum of the weight of the filter element 3 itself and the weight of the impurities on it needs to be greater than the support force applied by the contact wheel 255 to the filter element 3 after adjustment. Therefore, the replacement standard of the filter element 3 can be adjusted according to the actual situation.

[0062] In the specific implementation process, taking the horizontally positioned air duct 1 as an example, after the carrier pipe 2 is connected to the air duct 1, the installation and replacement steps of the filter element 3 are as follows:

[0063] The first step is the initial installation of the filter element 3. One end of the filter element 3 to be installed is inserted into the corresponding extension edge 24 on the carrier tube 2. At this time, the outer wall of the filter element 3 is in contact with the slide rails 23 on both sides of the carrier tube 2. Figure 3As shown, the filter element 3 is then pushed towards the location of the carrier tube 2. Under the action of the thrust and the gravity of the filter element 3 itself, it moves along the slide rail 23 into the interior of the carrier tube 2. At the same time, the contact wheel 255 on the extension edge 24 squeezes the spring 254 behind it and enters the sleeve 251. The spring 254 between the sleeve 251 and the contact wheel 255 is squeezed and begins to store force, which can then push the filter element 3 to continue to descend until the filter element 3 is completely inside the carrier tube 2, that is, the contact wheel 255 moves to the top of the filter element 3. At this time, the contact wheel 255 extends outward under the action of the spring 254 behind it, thus being located on the movement path of the filter element 3 and preventing the filter element 3 from moving upward. Moreover, at this time, the bottom of the filter element 3 is in contact with the contact wheel 255 at the bottom of the carrier tube 2, thereby confining the filter element 3 in the carrier tube 2; and corresponding to the air flowing in the air duct 1, so as to filter the impurities in it;

[0064] The second step is to place the new filter element 3. Place the new filter element 3 above the filter element 3 already installed inside the carrier tube 2, and following the method from the first step, retract the uppermost contact wheel 255 of the carrier tube 2 into the sleeve 251, ensuring it fits against the outer wall of the new filter element 3. Figure 10 As shown, the reason for this installation is to prevent the uppermost bonding wheel 255 from blocking the new filter element 3 from descending. Therefore, the weight of the new filter element 3 presses on the filter element 3 that has already been inserted into the carrier tube 2.

[0065] The third step is to adjust the support force. Since the rear end of the sleeve 251 is connected to a screw 253 by a thread, and one end of the screw 253 extends out of the sleeve 251 and is connected to a knob; the other end is located inside the sleeve 251 and is connected to a disc-shaped extrusion plate through a bearing. When the knob is rotated, the screw 253 can be moved into the sleeve 251 or extended, thereby adjusting the position of the extrusion plate inside the sleeve 251. The screw 253 is connected to the spring 254 through the extrusion plate, so when the screw 253 rotates, it can drive the extrusion plate to extend and retract inside the sleeve 251 to adjust the thrust of the spring 254 on the contact wheel 255, thereby indirectly changing the support force of the support member 25 on the filter element 3.

[0066] The fourth step is filter element 3 replacement. As dust and impurities continuously adhere to the filter element 3 inside the carrier tube 2, the weight of the filter element 3 gradually increases. When the weight of the filter element 3 itself + the weight of the impurities on it + the weight of the top filter element 3 in the carrier tube 2 exceeds the supporting force that the bonding wheel 255 can apply to the filter element 3, the bonding wheel 255 is squeezed into the sleeve 251 for retraction and expansion. The spring 254 connected to the rear end of the bonding wheel 255 is in a stored state. At this time, the filter element 3 inserted inside the carrier tube 2 slides downward, so that the other end of the carrier tube 2 is discharged. At the same time, the new filter element 3 placed on top of the filter element 3 moves into the carrier tube 2. Figure 12 As shown, at this time, the contact wheel 255 on the extension edge 24 extends under the action of the spring 254, thereby blocking the filter element 3, thus completing the automatic replacement of the filter element 3. Afterwards, the robot only needs to take away the replaced filter element 3.

[0067] Similarly, for vertical duct 1, such as Figure 13 and Figure 14 As shown, manual pushing is required for replacement. Alternatively, an external device with the same pushing force, such as a telescopic rod, can be used to replace the filter element 3 that needs to be replaced.

[0068] Example 2: Based on Example 1, this application provides a temporary suspension structure to assist in storing the replaced filter element. The overall concept is as follows:

[0069] The temporary fixing structure is another major improvement in this application. Its purpose is to store the replaced filter element 3 and prevent it from falling off during replacement. To this end, we added a temporary fixing structure on the basis of the replacement structure. The improvement is divided into two parts: one is the improvement of the filter element 3; the other is the improvement of the carrier tube 2, so that the two can cooperate with each other to achieve the purpose of temporary fixing.

[0070] Improvement to filter element 3 (edge ​​strip 34): Multiple extension blocks 341 are symmetrically arranged on the outer wall of filter element 3, such as... Figure 7 and Figure 8 As shown, the top of the extension block 341 has a reserved groove 342, in which a central rod 343 is inserted laterally. A hook 35 is connected to this central rod 343 to facilitate hooking with the connecting rod 27 on the extension edge 24. The hook 35 is connected to the central rod 343 by a torsion spring 344. Under the torsion of the torsion spring 344, the hook 35 flips away from the filter element 3 to easily hook the connecting rod 27 located at the end of the extension edge 24. Figure 9 As shown.

[0071] Improvement of the carrier tube 2: Opposite to the filter element 3, our extension edge 24 has an extension block 341 and a corresponding interface 26. This allows the extension block 341 on the edge of the filter element 3 to fit snugly against the interface 26 after the filter element 3 is inserted into the carrier tube 2, sealing the interface 26 and providing space for the extension block 341 to move. Furthermore, the edge of the interface 26 is arc-shaped. When the filter element 3 slides along the slide rail 23, the hook 35 flips towards the side closer to the filter element 3 under the pressure of the interface 26, thus allowing the hook 35 to be extended or retracted. Figure 10 and Figure 11 As shown; in addition, we have connected a connecting rod 27 to one end of the slide rail 23, as follows Figure 4 As shown, the connecting rod 27 corresponds to the outlet of the slide rail 23, and the hook 35 on the filter element 3 corresponds to the connecting rod 27. Therefore, when the filter element 3 slides out along the slide rail 23, the hook 35 on the filter element 3 can hook onto the connecting rod 27, thereby connecting the replaced filter element 3 and achieving the purpose of temporary storage and release.

[0072] In order for the hook 35 to accurately hook the connecting rod 27, the connecting rod 27 is set at the end of the interface 26 and corresponds vertically to the interface 26. When the hook 35 moves out of the interface 26, the hook 35 flips away from the filter element 3 under the action of the torsion spring 344 and hooks with the connecting rod 27 at the opening of the interface 26, thereby completing the temporary storage of the filter element 3.

[0073] In the specific implementation process, the filter element 3 is inserted into the carrier tube 2. During the insertion process, the extension block 341 on the outer wall of the filter element 3 corresponds to the interface 26 opened on the outside of the carrier tube 2, such as... Figure 10 As shown, press the filter element 3 to press it into the carrier tube 2, as shown. Figure 11 As shown, with the movement of the uppermost support tube 2, the hook 35 flips towards the side closer to the filter element 3 under the squeezing action of the interface 26, thus retracting the hook 35. At this time, the torsion spring 344 between the hook 35 and the connecting rod 27 is in a stored state. Since the connecting rod 27 corresponds to the outlet of the interface 26, and the hook 35 on the filter element 3 corresponds to the connecting rod 27, when the filter element 3 slides out along the slide rail 23, the hook 35 on the filter element 3 unfolds under the action of the torsion spring 344 and hooks with the connecting rod 27 at the end of the interface 26, as shown. Figure 12 As shown, this allows for the connection of the replaced filter element 3, serving as a temporary storage and storage mechanism. As the filter element 3 moves, it continues until the end with the hook 35 is moved. Similarly, for the vertical duct 1, only one hook 35 is installed. Figure 14 As shown, when the filter element 3 extends out of the carrier tube 2, the hook 35 on the filter element 3 engages with the connecting rod 27 near the lower position, forming a... Figure 14 The state shown in (d) is as follows.

[0074] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A ventilation device with a filter element, characterized in that, The ventilation device includes: Air duct (1); The carrier pipe (2) is connected between two adjacent air ducts (1), and a filter element (3) is embedded inside it for filtering the air flowing through the carrier pipe (2); The inner walls of both sides of the carrier tube (2) are provided with a slide rail (23), and the filter element (3) can be inserted into the carrier tube (2) along the slide rail (23) and supported by the retractable support member (25) on the slide rail (23); When the filter element (3) is pushed, the support (25) in contact with the filter element (3) retracts, and the filter element (3) moves outward along the slide rail (23).

2. A ventilation device with a filter element as described in claim 1, characterized in that: The support member (25) includes a sleeve (251) connected to the slide rail (23), and the front opening of the sleeve (251) corresponds to the through hole of the outer wall of the slide rail (23). A fitting wheel (255) is embedded in the sleeve (251), and the fitting wheel (255) is connected to the inside of the sleeve (251) through a spring (254). The bonding wheel (255) is located on the side of the spring (254) facing the inner wall of the slide rail (23), and the bonding wheel (255) is located on the movement path of the filter element (3). When the filter element (3) is pressed by an external force in the direction of the bonding wheel (255), the bonding wheel (255) retracts into the sleeve (251), and the spring (254) connected to the rear end of the bonding wheel (255) is in a stored state.

3. A ventilation device with a filter element as described in claim 2, characterized in that: The rear end of the sleeve (251) is connected to a screw (253) by a thread, and one end of the screw (253) extends out of the sleeve (251) and a knob is connected to the end; the other end is located inside the sleeve (251) and a disc-shaped extrusion plate is connected to the end by a bearing. The screw (253) is connected to the spring (254) through the extrusion plate. When the screw (253) rotates, it can drive the extrusion plate to extend and retract inside the sleeve (251).

4. A ventilation device with a filter element as described in claim 2, characterized in that: The support member (25) is symmetrically arranged on the inner wall of the slide rail (23), and the slide groove (33) opened on the outer wall of the filter element (3) corresponds one-to-one with the support member (25). The edge of the filter element (3) is chamfered, and the slide groove (33) extends to the chamfer position. The direction of rotation of the bonding wheel (255) is consistent with the length direction of the groove (33). When the filter element (3) is inserted into the carrier tube (2), the bonding wheel (255) slides along the groove (33) on the outer wall of the filter element (3).

5. A ventilation device with a filter element as described in claim 1, characterized in that: One end of the slide rail (23) is connected to a connecting rod (27), and the connecting rod (27) corresponds to the outlet of the slide rail (23). The outer wall of the filter element (3) is provided with a hook (35) corresponding to the connecting rod (27). When the filter element (3) slides out along the slide rail (23), the hook (35) on the filter element (3) can hook with the connecting rod (27).

6. A ventilation device with a filter element as described in claim 5, characterized in that: One end of the hook (35) is connected to the central rod (343) on the outer wall of the filter element (3) via a torsion spring (344). Under the torsion of the torsion spring (344), the hook (35) flips away from the filter element (3). The slide rail (23) has a corresponding interface (26) at both ends of the slide rail (23), and the edge of the interface (26) is arc-shaped. When the filter element (3) slides along the slide rail (23), the hook (35) flips towards the side closer to the filter element (3) under the squeezing action of the interface (26). The connecting rod (27) corresponds vertically to the interface (26). When the hook (35) moves out of the interface (26), the hook (35) flips away from the filter core (3) under the action of the torsion spring (344) and hooks with the connecting rod (27) at the opening of the interface (26).

7. A ventilation device with a filter element as described in claim 6, characterized in that: An extension block (341) is provided on the outer wall of the filter element (3), and the extension block (341) corresponds to the interface (26) on the carrier tube (2), which can seal the interface (26); a reserved groove (342) is provided on the top of the extension block (341), and the center rod (343) is located in the reserved groove (342).

8. A ventilation device with a filter element as described in claim 1, characterized in that: The filter element (3) includes a rectangular frame-shaped housing (31), and a filter layer (32) is embedded inside the housing (31). When the filter element (3) is inserted into the carrier tube (2), the filter layer (32) corresponds to the channel of the carrier tube (2).

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