Buffer type partition-free filter

Abstract

The utility model provides a buffer type partition-free filter which comprises a shell, a filter element is arranged in the shell, the cross section of the filter element is in a wave shape, an opening is formed in the shell, a cover plate fixedly covers the opening, a sliding groove is formed in the inner side of the shell, a support is fixedly connected to each wave crest of the filter element, and shaft rods and fixing columns are arranged at the two ends of each support. A roller is movably installed on the shaft rod and movably connected with the sliding groove, a buffer spring is fixedly installed on the fixing column, and the other end of the buffer spring is fixedly connected with the fixing column of the adjacent support. The other end of the buffer spring is fixedly connected with the fixing column of the adjacent support, namely, the buffer spring is arranged between the wave crests of the filter element, when the filter is impacted, the buffer spring buffers the impact and restores the wave crest position of the filter element, the filter element is prevented from being deformed, and the service life of the filter element is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of filter technology, specifically relating to a buffer-type plateless filter. Background Technology

[0002] In high-temperature industrial environments and cleanrooms, stringent requirements govern air cleanliness, necessitating the use of medium-efficiency air filters with high-temperature resistance. Currently, commonly used cartridge-type medium-efficiency high-temperature resistant air filters primarily consist of two core components: an outer frame and an internal filter element. The filter element is made of high-temperature resistant medium-efficiency glass fiber filter paper folded into a corrugated structure using a special process. To ensure the structural strength of the filter element, maintain uniform pleat spacing, and guarantee smooth airflow, corrugated aluminum baffles are typically embedded between the filter paper pleats. Given the low resistance of medium-efficiency filter paper, air easily permeates through it; therefore, the sealing performance between the filter element and the outer frame becomes a key indicator for evaluating the quality of this type of filter.

[0003] Existing diaphragmless filters lack a buffer design, which makes the internal filter element prone to deformation or displacement when subjected to external impacts or vibrations, thus affecting filtration performance and even shortening its service life.

[0004] Chinese utility model patent CN215311028U discloses a buffer-type plateless filter, relating to the field of plateless filters. It aims to solve the problem that existing plateless filters lack a buffer device, resulting in the inability to effectively buffer the impact force generated by external impacts, leading to deformation of the filter element and affecting normal filter operation. The new filter includes a filter housing, a filter element, a buffer mechanism, and a cover. The filter element is movably connected within the filter housing, the buffer mechanism is installed between the filter element and the filter housing, and the cover is movably connected above the filter housing. Compared to conventional filter housing designs, the buffer mechanism significantly improves the overall structural stability of the filter housing. The buffer mechanism itself is simple and compact, and can be directly installed within the filter housing, facilitating installation and maintenance. In contrast, the filter element in this device is fixed integrally to the buffer mechanism, resulting in poor buffering effect and inadequate filter protection. Utility Model Content

[0005] The purpose of this invention is to provide a buffer-type diaphragmless filter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a buffer-type plateless filter, comprising a housing, a filter element disposed within the housing, the filter element having a wavy cross-section, an opening in the housing, a cover plate fixedly covering the opening, a sliding groove on the inner side of the housing, a bracket fixedly connected to each crest of the filter element, a shaft and a fixed post at both ends of the bracket, a roller movably mounted on the shaft, the roller being movably connected to the sliding groove, a buffer spring fixedly mounted on the fixed post, and the other end of the buffer spring being fixedly connected to the fixed post of the adjacent bracket.

[0007] Preferably, the support frame is provided with an air guide slit.

[0008] Preferably, the bracket is fixedly mounted with a soft rubber sheet.

[0009] Preferably, the opening of the housing is provided with a notch, and the periphery of the cover plate is provided with a protrusion, the protrusion being fixedly fitted into the notch.

[0010] Preferably, the shaft is provided with a plug hole, and a plug is fixedly installed in the plug hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The filter element of this utility model has a wave-shaped cross-section. A bracket is fixedly connected to each wave crest of the filter element. Both ends of the bracket are provided with shafts and fixed columns. Rollers are movably installed on the shafts. A sliding groove is provided on the inner side of the housing. The rollers are movably connected to the sliding groove. A buffer spring is fixedly installed on the fixed column. The other end of the buffer spring is fixedly connected to the fixed column of the adjacent bracket. That is, the buffer spring is set between the wave crests of the filter element. When the filter is impacted, the buffer spring buffers the impact and restores the wave crest position of the filter element, preventing the filter element from deforming and improving the service life of the filter element.

[0013] The bracket of this utility model is provided with shafts and fixed columns at both ends. Rollers are movably mounted on the shafts. A sliding groove is provided on the inner side of the housing. The rollers are movably connected to the sliding groove. This design improves the buffering effect of the filter element. Attached Figure Description

[0014] Figure 1 This is a structural view of the present invention.

[0015] Figure 2 This is an exploded structural view of the present invention.

[0016] Figure 3 This is a structural view of the casing of this utility model.

[0017] Figure 4 This is a structural view of the filter element of this utility model.

[0018] Figure 5 This is a structural view of the bracket of this utility model.

[0019] Figure 6 This is an enlarged structural view of the bracket of this utility model.

[0020] The diagram is labeled as follows: 1. Housing; 2. Filter element; 3. Cover plate; 4. Slide groove; 5. Bracket; 6. Shaft; 7. Fixing column; 8. Roller; 9. Buffer spring; 10. Air guide slit; 11. Soft rubber sheet; 12. Notch; 13. Protrusion; 14. Insertion hole; 15. Insertion piece. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] like Figures 1-6 As shown, this utility model provides a buffer-type plateless filter, including a housing 1, in which a filter element 2 is disposed. The filter element 2 has a corrugated cross-section. The housing 1 has an opening, which is fixedly covered by a cover plate 3. A groove 4 is provided on the inner side of the housing 1. A bracket 5 is fixedly connected to each crest of the filter element 2. Both ends of the bracket 5 are provided with a shaft 6 and a fixing post 7. A roller 8 is movably mounted on the shaft 6 and is movably connected to the groove 4. A buffer spring 9 is fixedly mounted on the fixing post 7, and the other end of the buffer spring 9 is fixedly connected to the fixing post 7 of the adjacent bracket 5. The bracket 5 has an air guide slit 10. A soft rubber sheet 11 is fixedly mounted on the bracket 5. The opening of the housing 1 has a notch 12, and the periphery of the cover plate 3 has a protrusion 13, which is fixedly fitted into the notch 12. The shaft 6 has a insertion hole 14, and a connector 15 is fixedly mounted in the insertion hole 14.

[0024] Through the above technical solution, the cross-section of the filter element 2 of this utility model is wavy. A bracket 5 is fixedly connected at each crest of the filter element 2. Both ends of the bracket 5 are provided with shafts 6 and fixed posts 7. Rollers 8 are movably installed on the shafts 6. A sliding groove 4 is provided on the inner side of the housing 1. The rollers 8 are movably connected to the sliding groove 4. A buffer spring 9 is fixedly installed on the fixed post 7. The other end of the buffer spring 9 is fixedly connected to the fixed post 7 of the adjacent bracket 5. That is, the buffer spring 9 is set between the crests of the filter element 2. When the filter is impacted, the buffer spring 9 buffers the impact and restores the crest position of the filter element 2, preventing the filter element 2 from deforming and improving the service life of the filter element 2.

[0025] The bracket 5 of this utility model is provided with shafts 6 and fixed columns 7 at both ends. Rollers 8 are movably installed on the shafts 6. The inner side of the housing 1 is provided with a sliding groove 4. The rollers 8 are movably connected to the sliding groove 4. This design improves the buffering effect of the filter element 2.

[0026] Example 2:

[0027] like Figures 1-6 As shown, this embodiment provides a buffer-type plateless filter. The filter includes a housing 1, and a filter element 2 is disposed inside the housing 1. The cross-section of the filter element 2 is corrugated, increasing the filtration area. The housing 1 has an opening, which is fixedly covered by a cover plate 3 for easy replacement and maintenance of the filter element 2. A groove 4 is provided on the inner side of the housing 1, extending circumferentially along the inner wall of the housing 1. A bracket 5 is fixedly connected to each crest of the filter element 2. Both ends of the bracket 5 are provided with a shaft 6 and a fixing post 7. The shaft 6 is perpendicular to the surface of the bracket 5, and the fixing post 7 is parallel to the surface of the bracket 5. A roller 8 is movably mounted on the shaft 6. The roller 8 is made of wear-resistant material, and its outer diameter is slightly smaller than the width of the groove 4. The roller 8 is movably connected to the groove 4, so that the filter element 2 can generate buffer displacement when subjected to external force. A buffer spring 9 is fixedly mounted on the fixing post 7. The buffer spring 9 is helical, with one end fixed to the fixing post 7 and the other end fixedly connected to the fixing post 7 of the adjacent bracket 5. The buffer spring 9 can extend and deform when the filter element 2 is impacted, absorbing part of the impact energy. When the external force disappears, the buffer spring 9 returns to its original shape, allowing the filter element 2 to return to its initial position. The filter element 2 is composed of multiple layers of filter material, effectively filtering particulate matter in the air. The support 5 is made of metal, possessing good strength and rigidity. The roller 8 experiences low friction when sliding in the groove 4, ensuring it does not affect the buffering effect of the filter element 2. The filter element 2, support 5, roller 8, and buffer spring 9 together form a buffer system, effectively reducing the impact of external impacts on the filter element 2 and extending the filter's service life. A sealing ring is used between the cover plate 3 and the housing 1 to prevent air leakage. This filter has a simple structure, is easy to manufacture and maintain, and is suitable for various applications requiring dust prevention and air purification.

[0028] Example 3:

[0029] like Figures 1-6As shown, this embodiment improves upon Embodiment 1 by modifying the support 5. The support 5 has an air guide slit 10, which is elongated and extends along the length of the support 5. The width of the air guide slit 10 is smaller than the pore size of the filter material to ensure that the filtration effect is not affected. When the airflow velocity is high, some airflow will pass through the air guide slit 10 into the next stage filter, thereby reducing the overall air resistance of the filter. The number and size of the air guide slits 10 are optimized to minimize air resistance while ensuring filtration effectiveness. The support 5 is manufactured using injection molding, and the air guide slit 10 is formed in one step during the molding process, requiring no additional processing. The presence of the air guide slit 10 not only reduces the air resistance of the filter but also prevents the filter element 2 from deforming or being damaged under strong airflow. When the wind force is too high, some airflow passes through the air guide slit 10 into the next stage filter, reducing the pressure on individual filter elements. This design allows the filter to adapt to a wider range of working conditions, enhancing its applicability and durability. The placement of the air guide slit 10 does not affect the strength and rigidity of the support frame 5, which still provides good support for the filter element 2. In actual use, the presence of the air guide slit 10 significantly reduces the pressure loss of the filter, thereby reducing the energy consumption of the fan. At the same time, the filtration effect is also optimized due to the more uniform airflow distribution.

[0030] Example 4:

[0031] like Figures 1-6 As shown, this embodiment further improves the bracket 5 based on Embodiment 1. A soft rubber sheet 11 is fixedly installed on the bracket 5. The soft rubber sheet 11 is made of elastic material and has good sealing and wear resistance. The soft rubber sheet 11 is set along the edge of the bracket 5, forming a continuous sealing strip. The soft rubber sheet 11 fits tightly against the inner wall of the housing 1, filling the gap between the bracket 5 and the housing 1. The soft rubber sheet 11 is integrally formed with the bracket 5 using a molding process, ensuring a strong connection. When the filter is working, the soft rubber sheet 11 can adapt to the slight displacement of the filter element 2, always maintaining a good sealing effect. The material of the soft rubber sheet 11 has a certain degree of chemical stability and can withstand various common air pollutants. The presence of the soft rubber sheet 11 not only seals the gap between the filter and the housing 1, but also plays a role in shock absorption and noise reduction. When the filter is impacted, the soft rubber sheet 11 can absorb some of the impact energy, further protecting the filter element 2. The use of the soft rubber sheet 11 significantly improves the sealing performance of the filter, preventing unfiltered air from bypassing the filter element 2.

[0032] Example 5:

[0033] like Figures 1-6As shown, this embodiment provides a buffer-type non-segmented filter, including a housing 1 and a cover plate 3. The housing 1 has a cylindrical structure with an opening at the top, and multiple recesses 12 are evenly distributed circumferentially at the opening. These recesses 12 are semi-circular, and their depth is approximately half the wall thickness of the housing 1. The cover plate 3 has a circular flat plate structure with a diameter matching the opening diameter of the housing 1. The periphery of the cover plate 3 has protrusions 13 corresponding to the number and position of the recesses 12 in the opening of the housing 1. The shape and size of these protrusions 13 match the recesses 12, and they are semi-cylindrical. When the cover plate 3 is placed on the housing 1, the protrusions 13 are precisely embedded in the recesses 12. This structural design ensures the accurate positioning of the cover plate 3 in the horizontal direction and prevents the cover plate 3 from rotating or shifting relative to the housing 1. At the same time, the tight fit between the protrusions 13 and the recesses 12 increases the contact area and improves the sealing effect. To further enhance the sealing performance, a layer of silicone sealant is applied between the recesses 12 and the protrusions 13. A corrugated filter element 2 is installed inside the housing 1, and the filter element 2 is fixed on both sides by brackets 5. A shaft 6 is connected to the bracket 5, and rollers 8 are mounted on the shaft 6. The rollers 8 slide in grooves 4 on the inner wall of the housing 1, providing cushioning for the filter element 2. The cover plate 3 has an air inlet and an air outlet; the air inlet connects to one side of the filter element 2, and the air outlet connects to the other side. During use, air enters through the air inlet, is filtered by the filter element 2, and exits through the air outlet. When the filter is subjected to external impact, the filter element 2 moves in the grooves 4 via the rollers 8, reducing direct impact. The protrusion 13-recess 12 structure of the cover plate 3 and the housing 1 ensures the airtightness of the entire system, preventing unfiltered air leakage. This design not only improves the filter's impact resistance and extends the life of the filter element 2, but also ensures the stability of the filtration effect. The protrusion 13-recess 12 structure simplifies the installation process of the cover plate 3. The operator only needs to align the protrusion 13 of the cover plate 3 with the recess 12 of the housing 1 and press gently to complete the installation. This design also facilitates daily maintenance and filter element 2 replacement, as the internal structure can be easily accessed simply by removing the cover plate 3.

[0034] Example 6:

[0035] like Figures 1-6As shown, this embodiment describes the connection structure of a buffer-type plateless filter, specifically a shaft 6 and a roller 8. The filter includes a housing 1, a filter element 2, a bracket 5, a shaft 6, and a roller 8. Each end of the shaft 6 has a cylindrical insertion hole 14. A cylindrical connector 15 is also provided, with a diameter matching the insertion hole 14. One end of the connector 15 is threaded and can be screwed into the insertion hole 14. The other end of the connector 15 is a smooth cylindrical surface with a diameter slightly smaller than the diameter of the shaft 6, used to support the roller 8. The roller 8 is a hollow cylinder with an inner diameter slightly larger than the diameter of the shaft 6, allowing it to rotate freely on the shaft 6. The length of the roller 8 is less than the distance between the two connectors 15, ensuring the free rotation of the roller 8. During installation, the shaft 6 is first fixed to the bracket 5. Then, the roller 8 is fitted onto the shaft 6, and finally, the connectors 15 are screwed into the insertion holes 14 at both ends of the shaft 6. The smooth end of the connector 15 extends out of the connector hole 14, forming an axial limit to prevent the roller 8 from detaching from the shaft 6. This design allows the roller 8 to rotate stably on the shaft 6 while facilitating installation and disassembly. When the roller 8 needs to be replaced, simply unscrew one end of the connector 15 to remove the roller 8 for replacement or maintenance. During filter operation, the filter element 2 moves the shaft 6 and roller 8 via the bracket 5. The roller 8 rolls in the groove 4 on the inner wall of the housing 1, reducing the direct impact on the filter element 2. The design of the connector 15 ensures that the roller 8 will not detach from the shaft 6 during high-speed movement or impact, guaranteeing the reliability of the entire buffer system.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A buffer-type plateless filter, comprising a housing, wherein a filter element is disposed within the housing, the filter element having a corrugated cross-section, the housing having an opening, and a cover plate is fixedly fitted over the opening, characterized in that, The inner side of the housing is provided with a sliding groove, and a bracket is fixedly connected to each crest of the filter element. Both ends of the bracket are provided with a shaft and a fixed column. A roller is movably installed on the shaft and the roller is movably connected to the sliding groove. A buffer spring is fixedly installed on the fixed column, and the other end of the buffer spring is fixedly connected to the fixed column of the adjacent bracket.

2. A buffer-type plateless filter according to claim 1, characterized in that, The support frame is equipped with air guide slots.

3. A buffer-type plateless filter according to claim 1, characterized in that, The bracket is fixedly installed with a soft rubber sheet.

4. A buffer-type plateless filter according to claim 1, characterized in that, The opening of the housing is provided with a notch, and the periphery of the cover plate is provided with a protrusion, which is fixedly fitted into the notch.

5. A buffer-type plateless filter according to claim 1, characterized in that, The shaft is provided with a plug hole, and a plug is fixedly installed in the plug hole.

Images