Quick-release access door structure and unit filter section

Abstract

The utility model provides a quick release type access door structure and a unit filter section, which comprises a door body, the door body comprises an outer cover plate, an inner cover plate, a damping spring and a sealing washer, the outer cover plate is rotatably connected to a mounting surface at an access port around a rotating center line and is provided with a connecting plate, the connecting plate is provided with an avoiding through hole, the damping spring is connected to the outer cover plate and the inner cover plate, and the sealing washer is arranged on the damping spring. The plurality of sealing washers are respectively connected to the outer cover plate and the inner cover plate; and the quick release mechanism comprises at least one bolt assembly, the bolt assembly comprises two insertion blocks and a pin body, the two insertion blocks are arranged on the mounting surface, one insertion block can be arranged in the avoiding through hole in a penetrating mode, insertion holes are formed in the two insertion blocks, and the pin body can be arranged in the two insertion holes in a penetrating mode so as to be connected with the door body and the mounting surface. The sealing structure can be quickly disassembled and assembled and has double sealing performance. Compared with a conventional access door structure, the access door structure has the advantages of being flexible to use, convenient to operate, good in sealing performance, stable in structure, capable of improving the overhaul efficiency and the like.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, specifically to a quick-release inspection door structure and a unit filtration section. Background Technology

[0002] In the industrial production sector, air handling equipment is widely used for its functions such as regulating air parameters and removing harmful substances. To meet the requirements of its efficient operation, the air outlets of the equipment are often equipped with filtration devices and other functional components that require maintenance, and thus maintenance ports are set up.

[0003] Traditional access door devices for filtration-equipped air vent flanges typically employ a single-layer plate structure, securing the access door to the access opening with multiple bolts around its perimeter. However, this traditional design reveals numerous drawbacks during actual maintenance. The reliance on numerous bolts for fixation not only makes disassembly and assembly time-consuming and labor-intensive, requiring specialized tools, but also results in severe bolt wear. Bolt breakage within the bolt holes is a frequent occurrence during maintenance, directly preventing the access door from being properly installed.

[0004] In addition, regarding sealing, the aging of the gaskets is a prominent issue. Replacement requires the complete disassembly of the access door, which significantly increases maintenance costs and results in poor sealing performance. Furthermore, the flange access port itself is quite heavy, making it inconvenient to place after removal. It is extremely difficult to operate when working at heights or in confined spaces. During installation, maintenance personnel must simultaneously ensure the stability of the access door and tighten the bolts, making the operation extremely inconvenient.

[0005] In summary, traditional maintenance door devices are cumbersome to disassemble and install, time-consuming, and prone to wear on flange sealing surfaces and bolt breakage due to frequent maintenance, which seriously affects sealing performance. They can no longer meet the needs of modern industrial production for efficient maintenance of air handling equipment. Therefore, there is an urgent need to develop a new type of maintenance door device that is simple in structure, has excellent sealing performance, and is easy to operate. Summary of the Invention

[0006] Therefore, the technical problem to be solved by this utility model is to overcome the problems of cumbersome disassembly and installation and unstable sealing of the existing maintenance door device, and to provide a quick-release maintenance door structure and unit filter section.

[0007] To solve the above-mentioned technical problems, this utility model provides a quick-release inspection door structure, which includes: a door body, which includes an outer cover plate, an inner cover plate, multiple shock-absorbing springs, and multiple sealing gaskets. The outer cover plate is arranged around the inner cover plate, with one side rotatably connected to the mounting surface at the inspection port around the rotation center line, and a connecting plate on the other side. The connecting plate has a clearance through hole. The two ends of the multiple shock-absorbing springs are respectively connected to the outer cover plate and the inner cover plate, and the multiple sealing gaskets are respectively connected to the outer cover plate and the inner cover plate, and can be respectively fitted to the mounting surface; a quick-release mechanism, which is arranged on the mounting surface and includes at least one pin assembly. The pin assembly includes two insertion blocks and a pin body. Both insertion blocks are arranged on the mounting surface, and one of the insertion blocks can pass through the clearance through hole. Both insertion blocks have insertion holes, and the pin body can pass through the two insertion holes to connect the door body and the mounting surface.

[0008] In one embodiment of the present invention, the pin assembly further includes a pin plate and three hanging plates. The three hanging plates are spaced apart above the plug block along the height direction of the door body, and a hook space is formed between two adjacent hanging plates. At least part of the pin body can be inserted and hooked in the hook space.

[0009] In one embodiment of the present invention, the pin includes a stop portion and an extension portion, the stop portion and the extension portion being arranged perpendicularly to each other, wherein the extension portion can be inserted into the insertion hole, and the stop portion can be hooked in the hooking space.

[0010] In one embodiment of the present invention, the quick-release assembly further includes a hinge assembly, the hinge assembly and the pin assembly are respectively disposed on both sides in the width direction of the door body, and the outer cover plate is connected to the hinge assembly to rotate relative to the mounting surface.

[0011] In one embodiment of the present invention, the hinge assembly includes a fixed plate and a disassembly rod. The fixed plate is disposed on the mounting surface, and the disassembly rod is connected to the fixed plate and coincides with the rotation center line. The outer cover plate is provided with a disassembly component, and the disassembly component is provided with a groove. The disassembly rod can be rotatably inserted into the groove.

[0012] In one embodiment of the present invention, the quick-release inspection door structure includes a plurality of pin assemblies and a plurality of hinge assemblies arranged on the same side, wherein the pin assemblies and the hinge assemblies are arranged one-to-one on both sides of the door width direction.

[0013] In one embodiment of the present invention, the outer cover plate includes a first body and a first sidewall, the inner cover plate is disposed inside the outer cover plate and includes a second body and a second sidewall, the first sidewall extends from the edge of the first body toward the second body, the second sidewall extends from the edge of the second body toward the first body, and the shock-absorbing spring is connected between the first body and the second body.

[0014] In one embodiment of the present invention, the outer cover plate further includes a bent portion, which is bent from the extended end of the first sidewall toward the inner cover plate, at least a portion of the sealing gasket is connected to the bent portion, and the remaining sealing gasket is connected to the second body.

[0015] This utility model also provides a unit filter section, which includes the above-mentioned quick-release maintenance door structure.

[0016] In one embodiment of this utility model, the unit's filter section further includes a housing and multiple filter chambers. The housing has a mounting surface on one side, and an inspection port is provided on the mounting surface. The quick-release inspection door structure is rotatably connected to the mounting surface at the inspection port.

[0017] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0018] The quick-release inspection door structure and unit filter section described in this utility model have a quick-release structure installed on the mounting surface. This allows for flexible assembly of the door body and the inspection port on the mounting surface via the quick-release mechanism, enabling rapid disassembly and easy opening. Simultaneously, sealing gaskets are respectively installed on the outer and inner cover plates of the door body, thus providing dual sealing performance. Compared to conventional inspection door structures currently available, this application offers advantages such as flexibility, ease of operation, good sealing, structural stability, and improved maintenance efficiency. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the quick-release inspection door structure in a preferred embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A schematic diagram of the quick-release mechanism in the quick-release access door structure shown.

[0022] Figure 3 yes Figure 1 The diagram shows the structure of the quick-release access door.

[0023] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure at the CC section;

[0024] Figure 5 yes Figure 1 Schematic diagram of the cross-sectional structure at point DD;

[0025] Figure 6 yes Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 yes Figure 1 Enlarged structural diagram at point B;

[0027] Figure 8 This is a schematic diagram of the unit's filter section in another embodiment of the present invention;

[0028] Figure 9 yes Figure 8 The diagram shows the internal structure of the filter section of the unit.

[0029] Explanation of reference numerals in the accompanying drawings: 100, mounting surface; 110, inspection port; 200, door body; 210, outer cover plate; 211, first body; 212, first side wall; 213, bending part; 214, handle; 215, connecting plate; 2151, clearance through hole; 216, disassembly / assembly part; 220, inner cover plate; 221, second body; 222, second side wall; 230, sealing gasket; 240, shock-absorbing spring; 300, quick-release mechanism; 310, hinge assembly; 311, fixing plate; 312, disassembly / assembly rod; 320, pin assembly; 321, pin body; 3211, stop part; 3212, extension part; 322, pin plate; 323, hanging plate; 324, plug block; 400, housing; 410, filter element; 1001, rotation center line. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0031] Example 1:

[0032] See Figures 1 to 3 As shown, this embodiment provides a quick-release inspection door structure, which includes:

[0033] The door body 200 includes an outer cover plate 210, an inner cover plate 220, multiple shock-absorbing springs 240, and multiple sealing washers 230. The outer cover plate 210 is arranged around the inner cover plate 220, with one side rotatably connected to the mounting surface 100 at the access port 110 about a rotation center line 1001. A connecting plate 215 is provided on the other side, with a clearance through hole 2151. The two ends of the multiple shock-absorbing springs 240 are respectively connected to the outer cover plate 210 and the inner cover plate 220. The multiple sealing washers 230 are respectively connected to the outer cover plate 210 and the inner cover plate 220. 20, and can be respectively attached to the mounting surface 100; quick-release mechanism 300, the quick-release mechanism 300 is disposed on the mounting surface 100, which includes at least one pin assembly 320, the pin assembly 320 includes two plug blocks 324 and a pin body 321, both plug blocks 324 are disposed on the mounting surface 100, and one of the plug blocks 324 can pass through the clearance through hole 2151, both plug blocks 324 are provided with plug holes, and the pin body 321 can pass through the two plug holes to connect the door body 200 and the mounting surface 100.

[0034] The quick-release access door structure described in this embodiment has a quick-release mechanism mounted on the mounting surface 100. This allows for flexible assembly of the door body 200 and the access port 110 on the mounting surface 100 via the quick-release mechanism 300, enabling rapid disassembly and easy opening. Simultaneously, sealing gaskets 230 are respectively disposed on the outer cover plate 210 and the inner cover plate 220 of the door body 200, thus providing dual sealing performance. Compared to conventional access door structures currently available, this application offers advantages such as flexible use, ease of operation, good sealing, structural stability, and improved maintenance efficiency.

[0035] In this embodiment, the door 200 is preferably a structure that matches the shape of the access panel 110, and its area can completely cover the access panel 110. The outer cover plate 210 is arranged around the inner cover plate 220. This double-layer structure can effectively improve the overall structural strength and stability of the door 200. In actual use, the access door may be subjected to external forces such as collisions and compressions. The double-layer structure can better disperse these external forces, preventing the door 200 from being damaged due to excessive local stress and extending the service life of the door 200. On the other hand, it can also improve the sealing performance of its overall structure.

[0036] See Figure 4 and Figure 5As shown, in this embodiment, the outer cover plate 210 includes a first body 211 and a first sidewall 212. The inner cover plate 220 is disposed inside the outer cover plate 210 and includes a second body 221 and a second sidewall 222. The first sidewall 212 extends from the edge of the first body 211 toward the second body 221, and the second sidewall 222 extends from the edge of the second body 221 toward the first body 211. The shock-absorbing spring 240 is connected between the first body 211 and the second body 221. The first body 211 is the main body of the outer cover plate 210, providing stable structural support for the entire outer cover plate 210 and serving as a connection base for connecting and installing other components or structures. The first sidewall 212 extends from the edge of the first body 211 toward the second body 221, forming a surrounding structure. This structure increases the overall strength and rigidity of the outer cover plate 210, making it more resistant to external forces. When the door 200 is subjected to lateral impact, the first sidewall 212 can effectively disperse the stress, preventing the outer cover plate 210 from deforming or being damaged. Simultaneously, the first sidewall 212 can provide some protection for the inner cover plate 220 located inside the outer cover plate 210, reducing direct impact and damage from external objects. Furthermore, it can prevent dust, moisture, and other impurities from entering the space between the outer cover plate 210 and the inner cover plate 220, protecting the normal operation of the internal structure.

[0037] Furthermore, the outer cover plate 210 in this embodiment also includes a bending portion 213. The bending portion 213 is bent from the extended end of the first sidewall 212 toward the inner cover plate 220. The bending structure increases the rigidity of the edge of the outer cover plate 210. When the door body 200 is subjected to external impact or compression, the bending portion 213 can effectively disperse the stress and prevent the outer cover plate 210 from deforming. At the same time, the bending portion 213 can also reduce the gap between the inner cover plate 220 and the outer cover plate 210 to achieve a better sealing structure.

[0038] The second body 221 cooperates with the first body 211 of the outer cover plate 210 to jointly constitute the main structure of the door 200. It can share some of the external pressure and, together with the first body 211, bear various forces acting on the door 200, further improving the overall strength and stability of the door 200. The second sidewall 222 extends from the edge of the second body 221 towards the first body 211, cooperating with the first sidewall 212 to form a relatively enclosed space. This structure can effectively prevent air, dust, and other substances from leaking out from the gap between the outer cover plate 210 and the inner cover plate 220, improving the sealing performance of the door 200. Furthermore, the second sidewall 222 can interact with the first sidewall 212 to further strengthen the connection between the outer cover plate 210 and the inner cover plate 220. Through reasonable design, the second sidewall 222 and the first sidewall 212 can form a certain snap-fit ​​or nested structure, so that the outer cover plate 210 and the inner cover plate 220 are tightly connected together. This not only forms a highly sealed and stable connection structure, but also reduces the overall thickness and volume of the door 200, making it suitable for more scenarios.

[0039] The shock-absorbing spring 240 is connected between the first body 211 and the second body 221, effectively buffering the impact force generated when the door 200 closes. When the door 200 closes quickly, the shock-absorbing spring 240 absorbs and disperses this energy, reducing collision noise between the door 200 and the mounting surface 100, and also preventing damage to the door 200 and the mounting surface 100 due to excessive impact force. Meanwhile, with the use of the door 200 and changes in the environment, the gap between the outer cover plate 210 and the inner cover plate 220 may change. The shock-absorbing spring 240 has an adaptive adjustment function; it can automatically expand and contract according to the change in gap, always maintaining support for the outer cover plate 210 and the inner cover plate 220, ensuring that the sealing performance of the door 200 is not affected.

[0040] In this embodiment, at least a portion of the sealing gaskets 230 are connected to the bend 213, while the remaining sealing gaskets 230 are connected to the second body 221. This distribution achieves an all-around seal between the door 200 and the mounting surface 100. The sealing gaskets 230 of the bend 213 can seal the gap between the edge of the outer cover plate 210 and the mounting surface 100, while the sealing gaskets 230 on the second body 221 can seal the contact portion between the inner cover plate 220 and the mounting surface 100. The two work together to form a complete double sealing system, effectively preventing air, liquid, or dust from leaking from various parts of the door 200 and the mounting surface 100.

[0041] Furthermore, in this embodiment, the sealing gasket 230 is preferably made of fluororubber, which has chemical corrosion resistance. When the sealing gasket 230 ages or is damaged, its distribution in different locations facilitates individual maintenance and replacement. Only the damaged sealing gasket 230 needs to be addressed, eliminating the need for large-scale disassembly and repair of the entire door body 200, thus reducing maintenance difficulty and cost and improving maintenance efficiency. In different embodiments, the sealing gaskets 230 in different locations can be selected from different materials and specifications according to actual needs. This utility model does not impose specific limitations in this regard.

[0042] See Figure 6 As shown, the quick-release assembly in this embodiment further includes a hinge assembly 310. The hinge assembly 310 and the latch assembly 320 are respectively disposed on both sides of the door body 200 in the width direction. The outer cover plate 210 is connected to the hinge assembly 310 to rotate relative to the mounting surface 100, and the outer cover plate 210 is provided with a handle 214 for easy operation by the operator. Specifically, the quick-release maintenance door structure includes multiple latch assemblies 320 and multiple hinge assemblies 310 disposed on the same side. The latch assemblies 320 and the hinge assemblies 310 are disposed one-to-one on both sides of the door body 200 in the width direction. In this embodiment, the hinge assembly 310 and the latch assembly 320 are respectively disposed on both sides of the door body 200 in the width direction. This layout makes the force on the door body 200 more even. When the door 200 is closed, the latch assembly 320 provides a fixing function, while the hinge assembly 310 provides support and rotation functions on the other side. The two work together to ensure the stability and sealing of the door 200. Specifically, the hinge assembly 310 ensures the stability of the door 200 during rotation. It can withstand the weight of the door 200 itself and the impact forces generated during opening and closing, preventing the door 200 from shaking, jamming, or shifting, making the rotation of the door 200 smoother and more stable.

[0043] Furthermore, the hinge assembly 310 includes a fixing plate 311 and a disassembly rod 312. The fixing plate 311 is disposed on the mounting surface 100, and the disassembly rod 312 is connected to the fixing plate 311 and coincides with the rotation center line 1001. The outer cover plate 210 is provided with a disassembly component 216, which has a groove. The disassembly rod 312 can be rotatably inserted into the groove. It should be noted that the rotation center line 1001 extends along the height direction of the door body 200 and is located on one side of the width direction of the door body 200. The groove design allows the disassembly rod 312 to be quickly inserted and removed, realizing the quick disassembly and assembly of the door body 200. When emergency repair or replacement of the door body 200 is required, this quick disassembly and assembly function can save a lot of time and effort and improve work efficiency.

[0044] See Figure 7 As shown, the latch assembly 320 also includes a latch plate 322 and three hanging plates 323. The three hanging plates 323 are spaced apart above the plug block 324 along the height direction of the door body 200, and a hooking space is formed between two adjacent hanging plates 323. At least part of the pin 321 can pass through and hook into the hooking space. Specifically, when the door body 200 is rotating, the pin 321 can hook into the upper hooking space, thereby allowing the plug block 324 to be embedded in the clearance through hole 2151 of the connecting plate 215; when it is necessary to lock the door body 200, the pin 321 can hook into the lower hooking space, thereby allowing the pin 321 to pass through two plug blocks 324 at the same time to lock and limit the door body 200.

[0045] Specifically, in this embodiment, the pin 321 includes a stop portion 3211 and an extension portion 3212, which are perpendicularly arranged to each other. The extension portion 3212 can pass through the insertion hole, and the stop portion 3211 can hook into the hooking space. Compared with the traditional bolt and nut fixing method, the design of this application makes the installation and disassembly of the door 200 simpler and faster. During installation, simply insert the insertion block 324 into the connecting plate 215, insert the extension portion 3212 into the insertion hole, and then rotate the pin 321 to hook the stop portion 3211 into the corresponding position. Disassembly is performed in reverse, without the need for complicated tightening or loosening operations using tools, greatly improving maintenance efficiency, especially suitable for scenarios where the door 200 needs to be opened and closed frequently. Furthermore, based on the above structural design, the pin 321 is easier to identify and handle during operation. Maintenance personnel can visually observe the position of the stop 3211 and quickly determine whether the pin 321 is installed correctly, improving the accuracy and efficiency of the operation. At the same time, this unique structural design also allows maintenance personnel to operate directly by hand, completing the installation and removal of the pin 321 without the need for tools.

[0046] Example 2:

[0047] See Figure 8 and Figure 9 As shown, this embodiment provides a unit filter section, which includes the quick-release maintenance door structure described in Embodiment 1. Further, the unit filter section also includes a housing 400 and a plurality of filter elements 410. A mounting surface 100 is provided on one side of the housing 400, and an inspection port 110 is provided on the mounting surface 100. The quick-release maintenance door structure is rotatably connected to the mounting surface 100 at the inspection port 110. Specifically, the filter element 410 in this embodiment can be configured as one or more of a physical filtration structure or a chemical adsorption filtration material.

[0048] In summary, the quick-release maintenance door structure and unit filter section described in this utility model have a quick-release structure installed on the mounting surface 100. This allows for flexible assembly of the door body 200 and the maintenance port 110 on the mounting surface 100 via the quick-release mechanism 300, enabling rapid disassembly and easy opening. Simultaneously, sealing gaskets 230 are respectively installed on the outer cover plate 210 and the inner cover plate 220 of the door body 200, thus providing dual sealing performance. Compared to conventional maintenance door structures at present, this application offers advantages such as flexible use, ease of operation, good sealing, structural stability, and improved maintenance efficiency.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made 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 quick-release inspection door structure, characterized in that: include: The door body includes an outer cover plate, an inner cover plate, multiple shock-absorbing springs, and multiple sealing gaskets. The outer cover plate is arranged around the inner cover plate, with one side rotatably connected to the mounting surface at the inspection port around the rotation center line, and a connecting plate on the other side. The connecting plate has a clearance through hole. The two ends of the multiple shock-absorbing springs are respectively connected to the outer cover plate and the inner cover plate, and the multiple sealing gaskets are respectively connected to the outer cover plate and the inner cover plate, and can be respectively fitted to the mounting surface. A quick-release mechanism is provided on the mounting surface and includes at least one pin assembly. The pin assembly includes two plug blocks and a pin body. Both plug blocks are provided on the mounting surface, and one of the plug blocks can pass through the clearance through hole. Both plug blocks are provided with plug holes, and the pin body can pass through the two plug holes to connect the door body and the mounting surface.

2. The quick-release inspection door structure according to claim 1, characterized in that: The latch assembly also includes a latch plate and three hanging plates. The three hanging plates are spaced apart above the latch block along the height direction of the door body, and a hook space is formed between two adjacent hanging plates. At least part of the pin can be inserted and hooked in the hook space.

3. The quick-release inspection door structure according to claim 1, characterized in that: The pin includes a stop portion and an extension portion, which are arranged perpendicularly to each other. The extension portion can pass through the insertion hole, and the stop portion can be hooked in the hooking space.

4. The quick-release inspection door structure according to claim 1, characterized in that: The quick-release assembly also includes a hinge assembly, which and the pin assembly are respectively disposed on both sides of the door width direction. The outer cover plate is connected to the hinge assembly to rotate relative to the mounting surface.

5. The quick-release inspection door structure according to claim 4, characterized in that: The hinge assembly includes a fixed plate and a disassembly rod. The fixed plate is disposed on the mounting surface, and the disassembly rod is connected to the fixed plate and coincides with the rotation center line. The outer cover plate is provided with a disassembly component, and the disassembly component is provided with a groove. The disassembly rod can be rotatably inserted into the groove.

6. The quick-release inspection door structure according to claim 4, characterized in that: The quick-release inspection door structure includes multiple bolt assemblies and multiple hinge assemblies arranged on the same side, with the bolt assemblies and hinge assemblies being arranged one-to-one on both sides of the door width direction.

7. The quick-release inspection door structure according to claim 1, characterized in that: The outer cover plate includes a first body and a first sidewall. The inner cover plate is disposed inside the outer cover plate and includes a second body and a second sidewall. The first sidewall extends from the edge of the first body toward the second body, and the second sidewall extends from the edge of the second body toward the first body. The shock-absorbing spring is connected between the first body and the second body.

8. The quick-release inspection door structure according to claim 7, characterized in that: The outer cover plate also includes a bent portion, which is bent from the extended end of the first sidewall toward the inner cover plate. At least a portion of the sealing gaskets are connected to the bent portion, and the remaining sealing gaskets are connected to the second body.

9. A filter section for a generator set, characterized in that: Includes the quick-release access door structure as described in any one of claims 1 to 8.

10. The unit filter section according to claim 9, characterized in that: The unit's filtration section also includes a housing and multiple filtration chambers. The housing has a mounting surface on one side, and an inspection port is provided on the mounting surface. The quick-release inspection door structure is rotatably connected to the mounting surface at the inspection port.

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