Edible fungus clean factory building equipment foundation bolt mildew-proof sealing joint structure

Abstract

This invention discloses a mold-proof sealing connection structure for anchor bolts of cleanroom equipment for edible fungi, relating to the technical field of sealing connection structures. It includes an equipment foundation pad, anchor bolts, an annular sealing chamber, locking nuts, an antibacterial sealing unit, and a locking grounding unit. The equipment foundation pad is a foundation layer with a steel mesh. The anchor bolts have a frost-heave bottom layer water-stopping structure. A spring vibration energy dissipation structure is connected to the annular sealing chamber. Through the equipment foundation pad and anchor bolts, in conjunction with a floating airtight structure and a wave spring pre-tightening structure, the sealing gap caused by equipment vibration is compensated in real time, extending the service life of the sealing connection structure under vibration conditions. Combined with the frost-heave bottom layer water-stopping structure, it actively seals water seepage channels. A self-triggered antibacterial slow-release unit is used to solve the problem of rapid seal failure and mold / bacterial growth. Furthermore, it allows for the real-time addition of sodium sulfate microcapsules, extending the service life of the antibacterial sealing unit.

Description

Technical Field

[0001] This invention belongs to the field of sealing connection structure technology, specifically a mildew-proof sealing connection structure for anchor bolts of edible fungi cleanroom equipment. Background Technology

[0002] Industrialized edible mushroom cultivation holds significant importance as a core industry. The core production equipment in clean production workshops for edible mushroom cultivation, such as fully automated aseptic inoculation lines, high-pressure steam sterilization chambers, constant-temperature incubation refrigeration units, and AGV logistics transfer systems, all require rigid fixing to the factory floor using anchor bolts. Unlike ordinary cleanrooms in electronics and pharmaceutical industries, edible mushroom production workshops operate under unique and extreme conditions. The workshops must maintain a high relative humidity of 85%-95% year-round, and the floors must be washed daily with disinfectant. The wastewater carries residual mushroom substrate, organic acids, and other corrosive substances. The core equipment operates under continuous high-frequency vibrations, and the sterilization chambers and refrigeration units experience extreme conditions such as temperature fluctuations and low-temperature freeze-thaw cycles. Furthermore, the workshops must meet multiple compliance requirements, including Class 100,000 cleanliness, food-grade safety production, and anti-static and explosion-proof measures. This places far stringent demands on the sealing structure between the equipment anchor bolts and the floor compared to ordinary industrial settings.

[0003] The existing anti-mold sealing structure for anchor bolts in cleanroom equipment for edible fungi is a static, fixed seal with no vibration self-compensation capability. This makes it unsuitable for the high-frequency vibration conditions of the equipment. Prolonged vibration can easily lead to loosening of the sealing surface and fatigue cracking of the rubber strips. Under vibration conditions, the effective lifespan of the seal is less than 3 years, and the leakage rate exceeds 60% after 18 months of use. This easily causes anchor bolt corrosion and equipment instability. Furthermore, the antibacterial solutions are all passive, fixed filler filling, which cannot achieve long-term controllable antibacterial effects. The active ingredients in the filler continuously deplete, becoming completely ineffective within 3-5 years. There is no early warning capability for leakage and bacterial growth, requiring post-incident maintenance. The cost of a single complete shutdown for maintenance is extremely high, causing economic losses and reducing the effectiveness of the sealing structure. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes a mold-proof sealing connection structure for the anchor bolts of edible fungi cleanroom equipment.

[0005] A mildew-proof sealing connection structure for anchor bolts of cleanroom equipment for edible fungi includes an equipment foundation pad, anchor bolts, an annular sealing chamber, locking nuts, antibacterial sealing unit, and locking grounding unit; The equipment foundation layer is provided on the upper end of the equipment foundation pad layer, and the interior of the equipment foundation layer is lined with steel mesh. The anchor bolts are integrally cast with the equipment foundation pad layer through a frost heave bottom waterproofing structure. The locking nut is installed on the upper end of the anchor bolt and is fixed to the equipment by the locking nut; The annular sealed chamber is coaxially mounted on the anchor bolts; The spring vibration energy dissipation structure is mounted on the anchor bolts and connected to the annular sealed chamber. The antibacterial sealing unit is installed on the annular sealing chamber; The locking grounding unit is installed on the anchor bolt and is used in conjunction with the antibacterial sealing chamber unit to form a closed-loop, fully enclosed protection system.

[0006] As a further aspect of the present invention: the frost heave bottom water-stopping structure includes an inner water-stopping ring and an outer water-stopping ring; The inner water-stop ring is coaxially fitted onto the bottom of the anchor bolt; The outer water-stop ring and the inner water-stop ring are coaxially connected; Both the inner and outer water-stop rings are made of food-grade, low-temperature resistant, water-swellable rubber with a volume expansion rate of ≥350%. They can maintain stable elasticity in an environment of -35℃ and show no cracking or leakage after 200 freeze-thaw cycles, completely solving the industry bottleneck of traditional water-stop structures being prone to failure at low temperatures. An elastic compensation gap is reserved between the inner and outer water-stop rings; The elastic compensation gap is filled with a food-grade closed-cell elastic foam pad. The top surfaces of the inner and outer water-stop rings are flush with the top surface of the equipment foundation pad. Both the inner and outer water-stop rings are pre-embedded in the equipment foundation pad layer with a pre-embedding depth of ≥30mm, used to seal the seepage channels and adaptively offset the low-temperature frost heave force.

[0007] As a further embodiment of the present invention: six bidirectional bent anchor bars are uniformly welded around the outer wall of the annular sealed chamber. The anchor bars are inclined outward at 15°. The anchor bars are synchronously welded and fixed to the ground steel reinforcement skeleton and the graphene antistatic conductive network. The annular sealed chamber is a one-piece stretched annular cylindrical structure made of food-grade 316L stainless steel, without any splicing welds.

[0008] As a further aspect of the present invention: the antibacterial sealing unit includes a floating airtight structure, a self-triggered antibacterial slow-release unit, and a built-in sensing module. The floating airtight structure is set at the upper end of the annular sealed chamber, which is used to automatically compensate for the sealing gap as the equipment vibrates, and to form a sealed cavity in the annular sealed chamber. The self-triggering antibacterial slow-release unit is filled in the annular sealed chamber and is used for leakage-triggered release of antibacterial and corrosion-inhibiting components. The built-in sensing module is installed inside the annular sealed chamber and is used to collect humidity data inside the chamber.

[0009] As a further aspect of the present invention: the floating airtight structure includes a wave spring pre-tightening structure, a wear-resistant sealing end face, and an airtight rubber strip; The wave spring preload structure is installed on the upper side of the floating airtight structure and is connected to the locking nut. The wear-resistant sealing end face is connected to both ends of the wave spring preload structure; The airtight rubber strip is set on the wear-resistant sealing end face and connected to the anchor bolts; The floating airtight structure compensates for the axial and radial sealing gaps caused by equipment vibration in real time through the pre-tightening force of the wave spring pre-tightening structure. The spring vibration energy dissipation structure is equipped with a wear-resistant sealing end face and an airtight rubber strip.

[0010] As a further aspect of the present invention: the self-triggered antibacterial sustained-release unit is a food-grade sodium alginate microcapsule structure that is triggered by both water and pH. The microcapsule is loaded with nano-silver antibacterial components and corrosion inhibitors, with a nano-silver loading of ≥2500ppm and an anti-mildew level that meets GB / T 1741-2007 standard level 0. Under normal conditions, the microcapsule remains in a closed state, and automatically releases the nano-silver antibacterial components and corrosion inhibitors when exposed to moisture or organic acids.

[0011] The built-in sensing module is a passive RFID humidity sensing tag, which is IP68 waterproof and sealed, with a humidity measurement range of 0-100%RH and a data acquisition frequency of 5-30H. The built-in sensing module is embedded inside the annular sealed chamber. It can wirelessly read the humidity data inside the chamber and connect to the digital twin operation and maintenance system of the edible fungus plant to realize early warning of leakage.

[0012] As a further aspect of the present invention: the locking grounding unit includes a stainless steel cover, a weather-resistant and antibacterial sealing gasket, and an annular conductive spring. The stainless steel cover is screwed onto the top of the annular sealing chamber by threads, and an annular groove is provided on the bottom end face of the stainless steel cover. The weather-resistant and antibacterial sealing gasket is embedded in the annular groove of the stainless steel cap; The annular conductive spring is positioned between the stainless steel gland and the annular sealed chamber to ensure uninterrupted conductivity throughout the annular sealed chamber, stainless steel gland, anchor bolts, and anti-static conductive network of the floor, thereby stabilizing the surface resistance of the entire area at 10 ohms. 6 -10 9 Ω; The top surface of the stainless steel cap is flush with the antibacterial and wear-resistant surface layer of the floor.

[0013] As a further aspect of the present invention: the annular conductive spring is made of beryllium bronze and is precision stamped; The weather-resistant and antibacterial sealing gasket is made of food-grade mildew-resistant silicone rubber. The stainless steel cap is made of food-grade 316L stainless steel and is CNC machined, with a flatness verification accuracy of ≤±0.03mm / m; The stainless steel cover has a pre-drilled through hole in the center that matches the anchor bolt, and the inner wall of the stainless steel cover is provided with a high-precision internal thread.

[0014] As a further aspect of the present invention, the installation method of the sealed connection structure includes the following steps: S1. Based on the design drawings and equipment technical parameters of the cleanroom for edible fungi, determine the specifications and component parameters of the sealing connection structure, simultaneously complete the detailed design of the connection points between the sealing connection structure and the floor steel reinforcement skeleton and anti-static network, reserve standardized welding and assembly interfaces, and complete the pre-construction work. S2. Fit the frost heave bottom water-stop structure onto the bottom of the anchor bolts and embed it in the equipment foundation pad layer. Then fix the annular sealing chamber onto the anchor bolts and weld it to the ground steel reinforcement skeleton and graphene antistatic conductive network through bi-directional bending anchor bars and make preliminary adjustments to the elevation. S3. Then fix the locking grounding unit to the anchor bolts, perform calibration, and fill the antibacterial sealing unit into the annular sealing chamber to complete the assembly of the floating airtight structure and the annular conductive spring. Then fix the equipment to the anchor bolts to complete the test and verification of sealing performance and antistatic performance. S4. Conduct wireless joint testing between the built-in sensing module and the factory's digital twin operation and maintenance system, calibrate the humidity data acquisition accuracy, set leakage early warning thresholds, and complete the overall testing and trial operation optimization of the sealing structure before acceptance.

[0015] As a further aspect of the present invention: In step S1, based on the design drawings of the edible fungi cleanroom and the technical parameters of the equipment, the sealing and protection objectives and installation boundary conditions are clarified. Collaborative and in-depth design is carried out for the equipment vibration frequency and workshop humidity conditions. The waveform spring parameters of the floating airtight components and the trigger threshold of the microcapsule antibacterial unit are customized. The monitoring range of the passive RFID sensing module is matched. The specifications and parameters of the sealing structure are determined. The connection point design with the steel reinforcement skeleton of the factory floor and the antistatic network is completed simultaneously. Standardized welding and assembly interfaces are reserved. Pre-construction work includes processing the sealed connection structure, simultaneously completing the processing, assembly, verification, and sensor module debugging of each component, ensuring the processing accuracy and functional integrity of each module, and transporting it to the construction site after passing inspection, with clean and protective packaging throughout the process; Clean the floor of the edible fungi cleanroom installation area, verify the floor elevation and the position of the embedded steel bars, complete the construction layout and sealing structure positioning marks, check the on-site construction conditions, and ensure that there is no cross-construction interference, no dust pollution, and that it meets the construction requirements of the cleanroom.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention, through the setting of equipment foundation pad and anchor bolts, in conjunction with floating airtight structure and wave spring pre-tightening structure, can compensate for the axial and radial sealing gap caused by equipment vibration in real time, extend the service life of sealing connection structure under vibration conditions, and, in conjunction with the freeze-swell bottom water-stop structure, can maintain stable elasticity in an environment of -35℃, and can actively block water seepage channels. The use of water-triggering / pH dual-trigger sodium alginate microcapsule antibacterial technology reduces the inoculation contamination rate of miscellaneous bacteria to below 0.1%, fundamentally solving the problem of rapid mold and miscellaneous bacteria growth in sealing failure, and can add sodium alginate microcapsules in real time, extending the service life of antibacterial sealing unit and improving the use effect of sealing connection structure.

[0017] (2) This invention uses a built-in sensing module to monitor the humidity of the sealed cavity in real time and seamlessly connects to the digital twin operation and maintenance system to achieve 100% accurate early warning of leakage and bacterial growth risks. It transforms traditional post-production shutdown maintenance into pre-production intelligent early warning. When used with the locking grounding unit, clean construction can be achieved on site, and the internal structure can be replaced without production stoppage, reducing the later operation and maintenance costs. When used with the ring conductive spring, it can achieve uninterrupted conduction between the sealed connection structure and the anti-static grounding network. It also has the ability to adapt to low temperature freeze-thaw expansion at -35℃, eliminating economic losses and production safety hazards caused by sealing failure and improving the use effect of the sealed connection structure. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the present invention.

[0019] Figure 2 This is a partial structural diagram of the steel mesh and annular sealed chamber in this invention.

[0020] Figure 3 This is a partial structural diagram of the locking grounding unit and the annular sealed chamber in this invention.

[0021] Figure 4 This is a partial exploded view of the sealing connection structure in this invention.

[0022] Figure 5 This is a partial exploded view of the sealing connection structure in this invention.

[0023] Figure 6 This is a partial structural diagram of the annular sealed chamber and the spring vibration energy dissipation structure in this invention.

[0024] Figure 7 This is a partial cross-sectional view of the sealing connection structure in this invention.

[0025] Figure 8 This is a schematic diagram of the construction method for the sealed connection structure in this invention.

[0026] In the diagram: 1. Equipment foundation pad; 2. Equipment foundation layer; 3. Reinforcing mesh; 4. Annular sealed chamber; 5. Anchor bolts; 6. Frost heave bottom water-stopping structure; 7. Spring vibration energy dissipation structure; 8. First expansion water-stopping structure; 9. Second expansion water-stopping structure; 10. Floating airtight structure; 11. Annular groove; 12. Wave spring pre-tightening structure; 13. Locking nut; 14. Weather-resistant antibacterial sealing gasket; 15. Annular conductive spring; 16. Stainless steel pressure cap; 17. Built-in sensing module. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1 Please see Figures 1-7 This application provides a mold-proof sealing connection structure for anchor bolts of cleanroom equipment for edible fungi, including an equipment foundation pad 1, anchor bolts 5, an annular sealing chamber 4, locking nuts 13, antibacterial sealing units, and locking grounding units. An equipment foundation layer 2 is provided on the upper end of the equipment foundation pad 1, and a steel mesh 3 is laid inside the equipment foundation layer 2. The anchor bolts 5 are integrally cast onto the equipment foundation pad 1 through a frost heave bottom water-stopping structure 6. A spring vibration energy dissipation structure 7 is set on the anchor bolts 5 and connected to the annular sealing chamber 4. The locking nuts 13 are installed on the upper end of the anchor bolts 5 and fixed to the equipment through the locking nuts 13. The annular sealing chamber 4 is coaxially installed on the anchor bolts 5. The antibacterial sealing unit is set on the annular sealing chamber 4. The locking grounding unit is set on the anchor bolts 5 and works in conjunction with the antibacterial sealing chamber unit to form a closed-loop, fully enclosed protection system.

[0029] The frost-swelling bottom layer water-stopping structure 6 in this invention includes an inner water-stopping ring and an outer water-stopping ring; the inner water-stopping ring is coaxially fitted onto the bottom of the anchor bolt 5; the outer water-stopping ring is coaxially connected to the inner water-stopping ring; both the inner and outer water-stopping rings are made of food-grade low-temperature resistant water-swelling rubber material with a volume expansion rate ≥350%, which can maintain stable elasticity in an environment of -35℃, and after 200 freeze-thaw cycles, there is no cracking or leakage, completely solving the industry bottleneck of traditional water-stopping structures being prone to failure at low temperatures; an elastic compensation gap is reserved between the inner and outer water-stopping rings; the elastic compensation gap is filled with a food-grade closed-cell elastic foam pad; the top surfaces of the inner and outer water-stopping rings are flush with the top surface of the equipment foundation pad 1; both the inner and outer water-stopping rings are pre-embedded in the equipment foundation pad 1 as a whole, with a pre-embedding depth ≥30mm, used to seal the seepage channels and adaptively offset the low-temperature frost-swelling force.

[0030] In this invention, six bidirectional bent anchor bars are uniformly welded around the outer wall of the annular sealed chamber 4. The anchor bars are inclined outward at 15° and are synchronously welded and fixed to the ground steel reinforcement skeleton and the graphene antistatic conductive network. The annular sealed chamber 4 is an annular cylindrical structure integrally stretched and formed from food-grade 316L stainless steel, without splicing welds. The upper part of the outer wall of the annular sealed chamber 4 is provided with a second expansion water-stop structure 9, and the lower part of the outer wall of the annular sealed chamber 4 is provided with a first expansion water-stop structure 8.

[0031] The antibacterial sealing unit of this invention includes a floating airtight structure 10, a self-triggered antibacterial slow-release unit, and a built-in sensing module 17. The floating airtight structure 10 is disposed at the upper end of the annular sealing chamber 4 and is used to automatically compensate for the sealing gap with equipment vibration and form a sealed cavity within the annular sealing chamber 4. The self-triggered antibacterial slow-release unit is filled within the annular sealing chamber 4 and is used to release antibacterial and corrosion-inhibiting components in a leakage-triggered manner. The built-in sensing module 17 is disposed within the annular sealing chamber 4 and is used to collect humidity data within the cavity.

[0032] In this invention, the floating airtight structure 10 includes a wave spring pre-tightening structure 12, a wear-resistant sealing end face, and an airtight rubber strip. The wave spring pre-tightening structure 12 is disposed on the upper side of the floating airtight structure 10 and is connected to the locking nut 13. The wear-resistant sealing end face is connected to both ends of the wave spring pre-tightening structure 12. The airtight rubber strip is disposed on the wear-resistant sealing end face and is connected to the anchor bolt 5. The floating airtight structure 10 compensates for the axial and radial sealing gaps generated by equipment vibration in real time through the pre-tightening force of the wave spring pre-tightening structure 12. The spring vibration energy dissipation structure 7 is provided with a wear-resistant sealing end face and an airtight rubber strip.

[0033] In this invention, the self-triggered antibacterial sustained-release unit is a food-grade sodium alginate microcapsule structure that is triggered by both water and pH. The microcapsule is loaded with nano-silver antibacterial components and corrosion inhibitors, with a nano-silver loading of ≥2500ppm. The anti-mildew level meets the GB / T 1741-2007 standard level 0. Under normal conditions, the microcapsule remains in a closed state, and automatically releases the nano-silver antibacterial components and corrosion inhibitors when exposed to moisture or organic acids.

[0034] In this invention, the built-in sensing module 17 is a passive RFID humidity sensing tag, which is IP68 waterproof and sealed. The humidity measurement range is 0-100%RH and the data acquisition frequency is 5-30Hz. The built-in sensing module 17 is embedded inside the annular sealed chamber 4. It can wirelessly read the humidity data inside the chamber and connect to the digital twin operation and maintenance system of the edible fungus plant to realize early warning of leakage.

[0035] The grounding locking unit of this invention includes a stainless steel cover 16, a weather-resistant and antibacterial sealing gasket 14, and an annular conductive spring 15. The stainless steel cover 16 is screwed onto the top of the annular sealed chamber 4, and an annular groove 11 is formed on the bottom end face of the stainless steel cover 16. The weather-resistant and antibacterial sealing gasket 14 is embedded in the annular groove 11 of the stainless steel cover 16. The annular conductive spring 15 is disposed between the stainless steel cover 16 and the annular sealed chamber 4 to achieve uninterrupted conduction of the annular sealed chamber 4, the stainless steel cover 16, the anchor bolts 5, and the antistatic conductive network of the floor, so that the surface resistance of the entire area can be stabilized at 10 Ω·cm. 6 -10 9 Ω; The top surface of the stainless steel cap 16 is flush with the antibacterial and wear-resistant surface layer of the floor.

[0036] In this invention, the annular conductive spring 15 is made of beryllium bronze and is precision stamped; the weather-resistant and antibacterial sealing gasket 14 is made of food-grade mildew-proof silicone rubber; the stainless steel cap 16 is made of food-grade 316L stainless steel and is CNC machined, with a flatness verification accuracy of ≤±0.03mm / m; the stainless steel cap 16 has a through hole in the center that matches the anchor bolt 5, and the inner wall of the stainless steel cap 16 is provided with a high-precision internal thread.

[0037] Example 2 Based on Example 1, referring to Figures 1-8 This is the second embodiment of the present invention, wherein the installation method of the sealing connection structure in the present invention includes the following steps: S1. Based on the design drawings and equipment technical parameters of the cleanroom for edible fungi, determine the specifications and component parameters of the sealing connection structure, simultaneously complete the detailed design of the connection points between the sealing connection structure and the floor steel reinforcement skeleton and anti-static network, reserve standardized welding and assembly interfaces, and complete the pre-construction work. S2. Install the frost heave bottom water-stop structure 6 at the bottom of the anchor bolt 5 and embed it in the equipment foundation pad layer 1. Then fix the annular sealing chamber 4 to the anchor bolt 5 and weld it to the ground steel reinforcement skeleton and graphene antistatic conductive network through bi-directional bending anchor bars and make preliminary adjustment of the elevation. S3. Then fix the locking grounding unit to the anchor bolt 5, perform calibration, and fill the antibacterial sealing unit into the annular sealing chamber 4 to complete the assembly of the floating airtight structure 10 and the annular conductive spring 15. Then fix the equipment to the anchor bolt 5 to complete the test and verification of sealing performance and antistatic performance. S4. Conduct wireless joint debugging between the built-in sensing module 17 and the factory digital twin operation and maintenance system, calibrate the humidity data acquisition accuracy, set the leakage early warning threshold, and complete the overall testing and trial operation optimization of the sealing structure before acceptance.

[0038] In step S1 of this invention, based on the design drawings and equipment technical parameters of the edible fungi cleanroom, the sealing and protection objectives and installation boundary conditions are clarified. Collaborative and detailed design is carried out for operating conditions such as equipment vibration frequency and workshop humidity. Waveform spring parameters of the floating airtight components and trigger thresholds of the microcapsule antibacterial units are customized. The monitoring range of the passive RFID sensing module is matched, and the specifications and parameters of the sealing structure are determined. Simultaneously, the detailed design of connection points with the factory floor steel reinforcement frame and anti-static network is completed, reserving standardized welding and assembly interfaces. Pre-construction work includes processing the sealing connection structure, simultaneously completing the processing, assembly, verification, and sensor module debugging of each component to ensure the processing accuracy and functional integrity of each module. After inspection and approval, the modules are transported to the construction site, with clean protective packaging throughout the process. The floor of the edible fungi cleanroom installation area is cleaned, the floor elevation and embedded steel reinforcement positions are verified, construction lines are laid out and sealing structure positioning marks are completed, and on-site construction conditions are checked to ensure no cross-construction interference, no dust pollution, and compliance with cleanroom construction requirements.

[0039] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A mildew-proof sealing connection structure for anchor bolts of cleanroom equipment for edible fungi cultivation, characterized in that, include: Equipment foundation pad, on which a steel mesh is laid; Anchor bolts are integrally cast with the equipment foundation pad layer through a frost heave bottom waterproofing structure. Locking nuts are installed on the upper end of anchor bolts and are used to secure the equipment. An annular sealed chamber, which is coaxially mounted on anchor bolts; The spring vibration energy dissipation structure is sleeved on the anchor bolts and connected to the annular sealed chamber. An antibacterial sealing unit is installed on the annular sealing chamber. The locking grounding unit is mounted on the anchor bolts and is used in conjunction with the antibacterial sealing chamber unit.

2. The anti-mildew sealing connection structure for anchor bolts of cleanroom equipment for edible fungi as described in claim 1, characterized in that, The frost heave bottom waterproofing structure includes: The inner water-stop ring is coaxially fitted onto the bottom of the anchor bolt; The outer water-stop ring is coaxially connected to the inner water-stop ring. Both the inner and outer water-stop rings are made of food-grade, low-temperature resistant, water-swellable rubber. An elastic compensation gap is reserved between the inner and outer water-stop rings; The elastic compensation gap is filled with a food-grade closed-cell elastic foam pad. The top surfaces of the inner and outer water-stop rings are flush with the top surface of the equipment foundation pad. Both the inner and outer water-stop rings are pre-embedded in the foundation pad of the equipment to seal the seepage channels and adaptively offset the low-temperature frost heave force.

3. The anti-mildew sealing connection structure for anchor bolts of edible fungi cleanroom equipment according to claim 1, characterized in that, Several bi-directional bent anchor bars are uniformly welded around the outer wall of the annular sealed chamber. The annular sealed chamber is an annular cylindrical structure integrally stretched from food-grade 316L stainless steel.

4. The anti-mildew sealing connection structure for anchor bolts of cleanroom equipment for edible fungi as described in claim 1, characterized in that, The antibacterial sealing unit includes: A floating airtight structure is set at the upper end of the annular sealed chamber to automatically compensate for the sealing gap as the equipment vibrates and to form a sealed cavity within the annular sealed chamber. The self-triggered antibacterial sustained-release unit is filled in an annular sealed chamber and is used for leakage-triggered release of antibacterial and corrosion-inhibiting components. An internal sensing module is installed inside the annular sealed chamber to collect humidity data within the chamber.

5. The anti-mildew sealing connection structure for anchor bolts of edible fungi cleanroom equipment according to claim 4, characterized in that, The floating airtight structure includes: A wave spring preload structure is installed on the upper side of the floating airtight structure and connected to a lock nut. The wear-resistant sealing end face is connected to both ends of the wave spring preload structure; An airtight sealing strip is installed on the wear-resistant sealing end face and connected to the anchor bolts.

6. The anti-mildew sealing connection structure for anchor bolts of edible fungi cleanroom equipment according to claim 4, characterized in that, The self-triggered antibacterial sustained-release unit is a food-grade sodium alginate microcapsule structure that is triggered by both water and pH. The microcapsules are loaded with nano-silver antibacterial components and corrosion inhibitors, with a nano-silver loading of ≥2500ppm and an anti-mildew level that meets the GB / T 1741-2007 standard grade 0.

7. The anti-mildew sealing connection structure for anchor bolts of edible fungi cleanroom equipment according to claim 4, characterized in that, The built-in sensing module is a passive RFID humidity sensing tag; The built-in sensing module is embedded inside the annular sealed chamber, which can wirelessly read the humidity data inside the chamber and connect to the digital twin operation and maintenance system of the edible fungi plant.

8. The anti-mildew sealing connection structure for anchor bolts of edible fungi cleanroom equipment according to claim 7, characterized in that, The grounding locking unit includes: A stainless steel gland is screwed onto the top of an annular sealing chamber by threads, and an annular groove is provided on its bottom end face. Weather-resistant and antibacterial sealing gasket, which is embedded in an annular groove; The annular conductive spring, positioned between the stainless steel gland and the annular sealed chamber, ensures uninterrupted continuity throughout the annular sealed chamber, stainless steel gland, anchor bolts, and the anti-static conductive network of the floor, maintaining a stable surface resistance of 10 ohms across the entire area. 6 -10 9 Ω; The top surface of the stainless steel cap is flush with the antibacterial and wear-resistant surface layer of the floor.

9. The anti-mildew sealing connection structure for anchor bolts of cleanroom equipment for edible fungi as described in claim 8, characterized in that, The annular conductive spring is made of beryllium bronze and is precision stamped. The weather-resistant and antibacterial sealing gasket is made of food-grade mildew-resistant silicone rubber. The stainless steel cap is made of food-grade 316L stainless steel.

10. The anti-mildew sealing connection structure for anchor bolts of edible fungi cleanroom equipment according to claim 9, characterized in that, The installation method of this sealed connection structure includes the following steps: S1. Based on the design drawings and equipment technical parameters of the cleanroom for edible fungi, determine the specifications and component parameters of the sealing connection structure, simultaneously complete the detailed design of the connection points between the sealing connection structure and the floor steel reinforcement skeleton and anti-static network, reserve standardized welding and assembly interfaces, and complete the pre-construction work. S2. Fit the frost heave bottom water-stop structure onto the bottom of the anchor bolts and embed it in the equipment foundation pad layer. Then fix the annular sealing chamber onto the anchor bolts and weld it to the ground steel reinforcement skeleton and graphene antistatic conductive network through bi-directional bending anchor bars and make preliminary adjustments to the elevation. S3. Then fix the locking grounding unit to the anchor bolts, perform calibration, and fill the antibacterial sealing unit into the annular sealing chamber to complete the assembly of the floating airtight structure and the annular conductive spring. Then fix the equipment to the anchor bolts to complete the test and verification of sealing performance and antistatic performance. S4. Conduct wireless joint testing between the built-in sensing module and the factory's digital twin operation and maintenance system, calibrate the humidity data acquisition accuracy, set leakage early warning thresholds, and complete the overall testing and trial operation optimization of the sealing structure before acceptance.

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