Dustproof sealing bearing seat with negative pressure dust collection structure

Abstract

The dustproof sealing bearing seat with negative pressure dust collection structure provided by the embodiment of the application relates to the technical field. The dustproof sealing bearing seat with negative pressure dust collection structure comprises a seat cabin, an air suction pipeline connected with an external vacuum pump is communicated on the outer side of the seat cabin, and a transparent dust shell connected with the outer surface of the mounting body is fixedly communicated on the top. A control mechanism, a dust pushing mechanism and a guide mechanism with a filter plate are arranged in the seat cabin, the guide mechanism guides and conveys the dust adsorbed by negative pressure to the output side of the dust pushing mechanism. When the dust accumulates to a target amount, the electrode block two on the sliding sleeve of the dust pushing mechanism contacts the electrode block one on the moving sleeve to trigger the controller, the electric telescopic cylinder drives the moving sleeve to move, the closed seat opens the balance hole at the bottom surface of the seat cabin to balance the pressure difference, at the same time, the electromagnetic door is opened, and the dust is pushed out by the pushing plate. The application actively carries out negative pressure dust collection and automatically links dust discharge, avoids dust from invading the bearing, does not need to be frequently disassembled and maintained, is reliable in sealing, and prolongs the service life of the bearing seat in a harsh environment.

Description

Technical Field

[0001] This invention relates to the field of technology, and in particular to a dustproof and sealed bearing housing with a negative pressure dust collection structure. Background Technology

[0002] Bearing housings, as the core basic component that supports bearings in mechanical equipment, are widely used in the support systems of various rotating machinery. Where there is a bearing, there needs to be a support point; the inner support point of the bearing is the shaft, and the outer support is what is commonly referred to as the bearing housing.

[0003] In numerous industrial sectors such as mining machinery, building materials production, photovoltaic manufacturing, and agricultural machinery, bearings often face harsh environments characterized by high dust levels, heavy workloads, and challenging maintenance conditions. For example, in wire cutting sections and online slurry recycling devices in the solar photovoltaic industry, silicon carbide cutting slurry and large amounts of dust permeate the working environment. Whether the bearing housing can effectively prevent abrasive slurry from entering the bearing directly determines the degree of bearing wear and its service life. When dust enters the bearing housing, it not only exacerbates the abrasive wear of the bearing raceways and rolling elements but may also cause the bearing to seize or even lead to equipment shutdown accidents.

[0004] Currently, bearing sealing technology is mainly divided into two categories: self-sealing and external sealing. Self-sealing involves adding dust covers, sealing rings, and other components to the bearing itself to improve sealing performance; external sealing involves improving the structure of the bearing housing. Existing dustproof solutions for bearing housings are mostly passive sealing methods. Common techniques include installing multiple layers of rubber sealing rings, dustproof felt, and skeleton oil seals between the bearing housing and the shaft. However, these passive sealing methods have significant limitations in practical use: on the one hand, the sealing rings will wear down under long-term high-speed operation and friction, resulting in gaps between the sealing rings and the shaft, and a decrease in sealing performance; on the other hand, the sealing rings need to be replaced after wear, and replacement often requires the complete disassembly of components such as dust covers, which is cumbersome and inconvenient.

[0005] Therefore, in order to solve the above problems, the applicant needs to design a dustproof and sealed bearing housing with a negative pressure dust collection structure. Summary of the Invention

[0006] This application provides a dustproof and sealed bearing housing with a negative pressure dust collection structure, including a bearing housing and an installation body supported on the inner side of the bearing housing. The bearing housing includes a housing, and an air intake pipe connected to an external vacuum pump is connected to the outer side of the housing. A dust-permeable shell is fixedly connected to the top surface of the housing, and the dust-permeable shell is connected to the outer surface of the installation body. A control mechanism and a dust-pushing mechanism are provided on the inner side of the housing. The control mechanism and the dust-pushing mechanism cooperate to push the dust that has been negatively adsorbed into the housing out of the housing. A guide mechanism is also provided on the inner side of the housing, and the guide mechanism guides the dust to the output side of the dust-pushing mechanism. When the amount of dust on the output side of the dust-pushing mechanism accumulates to a target amount, the dust-pushing mechanism will move towards the control mechanism and drive the control mechanism to start.

[0007] Preferably, the control mechanism includes a base, and an electric telescopic cylinder is fixedly mounted on the top surface of the base. A scissor arm is mounted on the outer side of the electric telescopic cylinder, and an extension rod is hinged to the end of the scissor arm away from the electric telescopic cylinder. A moving rod is fixedly mounted on one end of the extension rod, and a moving sleeve is mounted on the end of the moving rod away from the extension rod. A sliding rod is slidably mounted on the inner side of the moving sleeve, and the sliding rod is fixedly connected to the base. The electric telescopic cylinder, guided by the scissor arm and the sliding rod, drives the moving rod and the moving sleeve, so that the control mechanism obtains a stable and repeatable linear motion path, ensuring the accurate triggering of the ash pushing action.

[0008] Preferably, the dust pushing mechanism includes a sliding sleeve slidably disposed on the outside of the sliding rod, and a slider is fixedly disposed on the bottom surface of the sliding sleeve. A push rod is fixedly disposed on the slider, and a push plate is fixedly disposed at the end of the push rod away from the slider. The sliding dust pushing assembly composed of the sliding sleeve, the slider, the push rod and the push plate actively pushes the dust out of the cabin when the dust accumulates to the target amount, realizing intermittent automatic dust cleaning and avoiding long-term dust retention.

[0009] Preferably, the movable sleeve is provided with an electrode block one, and the sliding sleeve is provided with an electrode block two. The contact and cooperation between the electrode block one and the electrode block two will activate the external controller, which will activate the electric telescopic cylinder. The contact and cooperation between the electrode block one on the movable sleeve and the electrode block two on the sliding sleeve will activate the external controller, thereby realizing the automatic activation of the electric telescopic cylinder after the ash is pushed into place, and improving the automation level of the ash cleaning process.

[0010] Preferably, the bottom surface of the cabin is provided with a through-hole for balancing, and a sealing seat is fixedly provided below the movable sleeve. The sealing seat is used to close or open the balancing hole. When the electric telescopic cylinder is in the initial state, it blocks the balancing hole. When the electric telescopic cylinder is in the compressed state, the sealing seat moves away from the balancing hole to balance the internal and external pressure difference. The cooperation between the sealing seat and the balancing hole ensures that the sealing seat blocks the balancing hole before pushing the dust to maintain the negative pressure dust collection effect, and opens the balancing hole during dust pushing to balance the internal and external pressure difference, ensuring smooth dust pushing and not affecting the stability of the negative pressure system.

[0011] Preferably, the guiding mechanism includes a guide plate fixedly connected to the inner wall of the cabin, and the guide plate has a vent hole for connecting the dust chamber and the negative pressure chamber. A filter plate is provided in the vent hole and is used to block dust. The guide plate with the vent hole and the filter plate guides the dust to the output side of the dust pushing mechanism, while the filter plate prevents the dust from entering the negative pressure chamber, thus avoiding dust clogging the suction pipe or damaging the vacuum pump.

[0012] Preferably, a protective mechanism is also provided above the cockpit, and the protective mechanism penetrates the cockpit to connect the inside and outside of the cockpit. The protective mechanism includes a fixed block, and a hollow cylinder that is slidably disposed with the cockpit is fixedly disposed on one side of the fixed block. A limit plate is fixedly disposed at the end of the hollow cylinder away from the fixed block, and a venting groove communicating with the hollow cylinder is opened on the limit plate. A vent is opened on the side of the hollow cylinder near the fixed block. The protective mechanism that penetrates the cockpit and has a hollow cylinder and a vent allows for pressure relief through the venting groove and the vent when the pressure difference between the inside and outside of the cockpit is too large, preventing excessive negative pressure from damaging the bearing seat structure.

[0013] Preferably, a spring is fixedly installed at the connection between the limiting plate and the hollow cylinder, and the end of the spring away from the limiting plate is fixedly connected to the inner wall of the cabin. The spring is installed between the limiting plate and the inner wall of the cabin so that the protective mechanism can automatically reset after depressurization and maintain the normal sealing and negative pressure working state.

[0014] Preferably, the cockpit is hinged with an electromagnetic door, and the electromagnetic door is compatible with an external controller. When the enclosed seat moves away from the balancing hole to balance the internal and external pressure difference, the controller controls the electromagnetic door to open. The hinged electromagnetic door cooperates with the external controller to automatically open the electromagnetic door after the enclosed seat opens the balancing hole, which facilitates the directional discharge of accumulated dust and improves the dust removal efficiency.

[0015] Preferably, the mounting body includes an outer bearing connected to the dust-permeable shell, and a bearing ring is rolled on the inner side of the outer bearing. An inner bearing is rolled on the inner side of the bearing ring, and the inner side of the inner bearing is connected to the outer bearing body. The mounting body is configured as a layered rolling structure of outer bearing, bearing ring and inner bearing, which makes the connection between the bearing seat and the rotating shaft more reliable, and at the same time ensures the effective connection between the negative pressure dust suction channel and the bearing installation position.

[0016] The dustproof and sealed bearing housing with a negative pressure dust collection structure provided in this embodiment of the invention has the following advantages compared with the prior art:

[0017] 1. This dustproof and sealed bearing housing with a negative pressure dust collection structure uses an external vacuum pump to form an active negative pressure dust collection channel in conjunction with the housing and dust-permeable shell, solving the problem of dust intrusion into the bearing and reducing the risk of abrasive wear on the bearing raceway and rolling elements. Simultaneously, guide plates and filter plates guide the dust to the output side of the dust-pushing mechanism. When the dust accumulates to the target amount, it pushes the sliding sleeve to move, causing electrode block one and electrode block two to contact and trigger the controller, achieving automatic detection of dust accumulation and precise judgment of the dust-cleaning timing. The electric telescopic cylinder then links the closed seat to open the balance hole to balance the internal and external pressure difference. Combined with the automatic opening of the electromagnetic door, the dust-pushing mechanism can smoothly push the accumulated dust out of the housing. The entire dust-cleaning process requires no manual intervention, avoiding the tedious operation of frequently disassembling dust covers and other components, and ensuring the long-term stable operation of the bearing housing under harsh working conditions, effectively extending the overall service life of the bearing and bearing housing.

[0018] 2. The dustproof and sealed bearing housing with negative pressure dust collection structure has an added protective mechanism above the cabin. When the filter plate is blocked or the negative pressure rises abnormally, the hollow cylinder and the limiting plate automatically slide to open the ventilation channel to release pressure, preventing excessive negative pressure from causing cabin deformation or sealing failure. After the negative pressure returns to normal, the spring will automatically reset the protective mechanism. No additional maintenance is required, which greatly improves the safety and reliability of the system operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional front view of the overall structure of the device of the present invention;

[0021] Figure 2 This is a three-dimensional bottom view of the overall structure of the device of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure between the bearing housing and the mounting body of the present invention;

[0023] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A;

[0024] Figure 5 This is a schematic diagram of the control mechanism structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the ash-pushing mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure of the ash pushing mechanism, control mechanism, and guiding mechanism of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B;

[0028] Figure 9 This is a schematic diagram of the protective mechanism structure of the present invention.

[0029] icon:

[0030] 1. Mounting body; 2. Bearing housing; 3. Suction pipe; 11. Inner bearing; 12. Bearing ring; 13. Outer bearing; 14. Balancing hole; 21. Cabin; 22. Ash-transmitting shell; 23. Control mechanism; 24. Ash-pushing mechanism; 25. Protective mechanism; 26. Guide mechanism; 27. Electromagnetic door; 231. Base; 232. Electric telescopic cylinder; 233. Scissor arm; 234. Extension rod; 235. Moving part 236. Rod; 237. Moving sleeve; 238. Slide rod; 239. Sealing seat; 241. Electrode block one; 242. Slide sleeve; 243. Sliding block; 244. Push rod; 245. Push plate; 246. Electrode block two; 251. Fixing block; 252. Hollow cylinder; 253. Limiting plate; 254. Ventilation groove; 255. Air hole; 256. Spring; 261. Guide plate; 262. Ventilation hole; 263. Filter plate. Detailed Implementation

[0031] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] Please refer to Figures 1-9 This invention provides a dustproof and sealed bearing housing with a negative pressure dust collection structure, including a bearing housing 2, with a mounting body 1 supported on the inner side of the bearing housing 2. The bearing housing 2 includes a chamber 21, and an air intake pipe 3 connected to an external vacuum pump is connected to the outer side of the chamber 21. A dust-permeable shell 22 is fixedly connected to the top surface of the chamber 21, and the dust-permeable shell 22 is connected to the outer surface of the mounting body 1. By connecting the external vacuum pump to the air intake pipe 3, a negative pressure environment can be formed inside the chamber 21, thereby actively sucking in dust and abrasive particles that have seeped into the dust-permeable shell 22, effectively preventing dust from entering the core area of ​​the bearing and achieving an active sealing effect of negative pressure dust collection.

[0033] The inner side of the cabin 21 is equipped with a control mechanism 23 and a dust-pushing mechanism 24. The control mechanism 23 and the dust-pushing mechanism 24 cooperate to push out the dust that has been negatively adsorbed into the cabin 21. The inner side of the cabin 21 is also equipped with a guide mechanism 26, which guides the dust to the output side of the dust-pushing mechanism 24. When the amount of dust accumulated on the output side of the dust-pushing mechanism 24 reaches the target amount, the dust-pushing mechanism 24 moves towards the control mechanism 23, activating the control mechanism 23. This achieves automatic dust accumulation detection and intermittent dust removal, avoiding frequent manual cleaning and reducing maintenance costs.

[0034] Specifically, the control mechanism 23 includes a base 231, on the top surface of which an electric telescopic cylinder 232 is fixedly mounted. A scissor arm 233 is mounted on the outer side of the electric telescopic cylinder 232, and an extension rod 234 is hinged to the end of the scissor arm 233 away from the electric telescopic cylinder 232. A movable rod 235 is fixedly mounted to one end of the extension rod 234, and a movable sleeve 236 is mounted to the end of the movable rod 235 away from the extension rod 234. A sliding rod 237 is slidably mounted on the inner side of the movable sleeve 236, and the sliding rod 237 is fixedly connected to the base 231. Through the guiding action of the scissor arm 233 and the sliding rod 237, the telescopic movement of the electric telescopic cylinder 232 can be stably converted into the linear reciprocating movement of the movable sleeve 236 along the sliding rod 237, ensuring the accuracy and repeatability of the control action.

[0035] The dust pushing mechanism 24 includes a sliding sleeve 241 slidably disposed outside the slide rod 237, with a slider 242 fixedly disposed on the bottom surface of the sliding sleeve 241. A push rod 243 is fixedly disposed on the slider 242, and a push plate 244 is fixedly disposed at the end of the push rod 243 away from the slider 242. The push plate 244 is located on the dust discharge side of the guide mechanism 26 and is used to push the accumulated dust towards the dust discharge port of the cabin 21. The sliding sleeve 241 can slide freely along the slide rod 237. When the dust accumulates to a certain amount, the dust exerts a pushing force on the push plate 244, causing the sliding sleeve 241 to move towards the control mechanism 23.

[0036] Electrode block 239 is provided on the movable sleeve 236, and electrode block 245 is provided on the sliding sleeve 241. When the amount of dust accumulation at the push plate 244 reaches the target amount, the sliding sleeve 241 is pushed by the dust towards the movable sleeve 236 until electrode block 239 and electrode block 245 come into contact and engage, thereby activating the external controller, which controls the electric telescopic cylinder 232 to move.

[0037] The bottom surface of the cabin 21 has a through-hole balancing hole 14, and a sealing seat 238 is fixedly installed below the movable sleeve 236. The sealing seat 238 is used to close or open the balancing hole 14. When the electric telescopic cylinder 232 is in its initial state and has not started pushing dust, the sealing seat 238 blocks the balancing hole 14, ensuring that the negative pressure environment inside the cabin 21 does not leak and maintaining normal dust collection efficiency. When the electric telescopic cylinder 232 receives a trigger signal, it starts a compression action, driving the movable sleeve 236 to slide along the slide rod 237, causing the sealing seat 238 to move away from the balancing hole 14, thereby opening the balancing hole 14 to balance the internal and external pressure difference. At this time, the negative pressure inside the cabin 21 decreases, making it easier for the subsequent dust pushing mechanism 24 to smoothly push out the dust, avoiding the negative pressure suction from hindering dust discharge. This design cleverly links pressure difference balance with dust pushing action, ensuring both efficient negative pressure during the dust collection stage and smooth dust discharge during the dust discharge stage.

[0038] The guiding mechanism 26 includes a guide plate 261 fixedly connected to the inner wall of the cabin 21, with a vent 262 formed on the guide plate 261. The vent 262 connects the space below the dust chamber (i.e., the dust-permeable shell 22) with the space containing the negative pressure chamber (i.e., the suction pipe 3). A filter plate 263 is installed inside the vent 262 to block dust. After the negative pressure airflow enters from the dust-permeable shell 22, it carries the dust through the vent 262 into the negative pressure chamber. The dust is intercepted by the filter plate 263 and deposited on the side of the guide plate 261 near the push plate 244, while clean air is discharged through the suction pipe 3. The inclined arrangement of the guide plate 261 is not shown in the figure, but it can be inferred from conventional design that the dust naturally slides to the front of the push plate 244, achieving directional collection and guidance of dust, and improving dust pushing efficiency.

[0039] A protective mechanism 25 is also installed above the cockpit 21. The protective mechanism 25 penetrates the cockpit 21, connecting the inside and outside of the cockpit 21 to prevent damage to the cockpit 21 due to excessive negative pressure. The protective mechanism 25 includes a fixing block 251, on one side of which a hollow cylinder 252 is fixedly mounted and slidably disposed with the cockpit 21. A limit plate 253 is fixedly mounted at the end of the hollow cylinder 252 away from the fixing block 251, and a venting groove 254 communicating with the hollow cylinder 252 is provided on the limit plate 253. A vent 255 is provided on the side of the hollow cylinder 252 closest to the fixing block 251. When the negative pressure inside the cockpit 21 exceeds a set value, outside air is drawn into the cockpit 21 through the venting groove 254, the hollow cylinder 252, and the vent 255, automatically depressurizing and preventing excessive negative pressure from causing deformation or sealing failure of the cockpit 21, thus providing safety protection.

[0040] A spring 256 is fixedly installed at the connection between the limiting plate 253 and the hollow cylinder 252. The end of the spring 256 away from the limiting plate 253 is fixedly connected to the inner wall of the cabin 21. Within the normal negative pressure range, the elastic force of the spring 256 keeps the limiting plate 253 tightly against the outer wall of the cabin 21, maintaining a seal. When the negative pressure is too high, the external air pressure pushes the limiting plate 253 to compress the spring 256, causing the hollow cylinder 252 to slide inward and open the ventilation channel. When the negative pressure returns to normal, the spring 256 pushes the limiting plate 253 to reset and reseal. This structure achieves automatic reset after pressure relief without manual intervention, ensuring high reliability.

[0041] An electromagnetic door 27 is hinged to the cabin 21 and is compatible with an external controller. When the sealing seat 238 moves away from the balancing hole 14 to balance the internal and external pressure difference, the controller opens the electromagnetic door 27, and the dust-pushing mechanism 24 pushes the dust out of the cabin 21 through the electromagnetic door 27. The opening of the electromagnetic door 27 and the pressure balancing action are sequentially linked, ensuring that the internal and external pressure difference is balanced and the dust outlet is open during dust discharge, allowing for smooth dust removal. After dust discharge is complete, the controller controls the electric telescopic cylinder 232 to return to its initial state, the sealing seat 238 re-seals the balancing hole 14, the electromagnetic door 27 closes, and the cabin 21 returns to negative pressure dust collection mode.

[0042] Mounting body 1 includes an outer bearing 13 connected to a dust-permeable shell 22. A bearing ring 12 is rolled inside the outer bearing 13, and an inner bearing 11 is rolled inside the bearing ring 12. The inner side of the inner bearing 11 is connected to the outer bearing body, such as a rotating shaft. Through the multi-layer rolling bearing structure, the stability and load-bearing capacity of the rotational support are ensured. At the same time, the dust-permeable shell 22 is tightly connected to the outer surface of the outer bearing 13, so that the bearing housing as a whole forms a closed dust-collecting channel, further improving the sealing performance.

[0043] The specific usage process and working principle are as follows:

[0044] In the initial state, the external vacuum pump operates continuously, maintaining negative pressure inside the cabin 21 through the suction pipe 3. The electric telescopic cylinder 232 is in the initial extended state, the sealing seat 238 blocks the balance hole 14, the electromagnetic door 27 is closed, and the protective mechanism 25 remains sealed under the action of the spring 256. The mounting body 1 rotates with the external shaft, and dust and abrasive particles flying in the working environment are sucked into the cabin 21 through the dust-permeable shell 22 under the action of negative pressure. The dust-laden airflow passes through the vent 262 on the guide plate 261 and through the filter plate 263. The dust is intercepted by the filter plate 263 and deposited on the dust outlet side of the guide plate 261, that is, in front of the push plate 244, while the clean air is discharged through the suction pipe 3.

[0045] As working time increases, the dust deposited in front of the push plate 244 gradually increases. When the dust accumulation reaches the target amount, the dust generates sufficient thrust on the push plate 244, pushing the push rod 243, slider 242, and sliding sleeve 241 to slide along the sliding rod 237 towards the control mechanism 23. When the electrode block 245 on the sliding sleeve 241 contacts the electrode block 239 on the moving sleeve 236, the external controller is triggered. The controller first activates the electric telescopic cylinder 232 to retract, which drives the moving sleeve 236 and the moving rod 235 to move towards the base 231 via the scissor arm 233 and the extension rod 234. When the moving sleeve 236 moves, the closed seat 238 below it moves synchronously, gradually moving away from the balance hole 14, causing the balance hole 14 to open, allowing outside air to enter the cabin 21 to balance the internal and external pressure difference.

[0046] Subsequently, the controller controls the electromagnetic door 27 to open. Since the negative pressure inside the cabin 21 is now balanced, the dust in front of the push plate 244 is no longer restrained by the negative pressure suction. The retraction action of the electric telescopic cylinder 232 is transmitted to the moving sleeve 236 via the scissor arm 233. However, it should be noted that the pushing action of the dust-pushing mechanism 24 is not directly driven by the electric telescopic cylinder 232. Instead, it is triggered by the dust's pushing force, causing the electric telescopic cylinder 232 to retract, which in turn causes the moving sleeve 236 to drive the sealing seat 238 to open the balance hole 14. Simultaneously, the controller can control external auxiliary pushing components such as cylinders or electric push rods. In this embodiment, preferably, a return spring can be added to the back of the push plate 244. When the electromagnetic door 27 opens, the return spring releases energy to assist the push plate 244 in pushing the dust out of the electromagnetic door 27. After the dust is discharged, the resistance in front of the push plate 244 disappears, and the sliding sleeve 241 returns to its original position under the action of the return spring or its own gravity. Electrode block 1 239 separates from electrode block 245. After the controller receives the disconnection signal, it controls the electric telescopic cylinder 232 to extend again. The moving sleeve 236 resets so that the sealing seat 238 re-seals the balance hole 14. At the same time, the electromagnetic door 27 closes, and the cabin 21 establishes negative pressure again to continue the dust collection operation.

[0047] During operation, if the negative pressure inside the cabin 21 rises abnormally due to blockage of the filter plate 263 or other reasons, the protective mechanism 25 will automatically open to release pressure, ensuring the safety of the cabin 21. When the negative pressure returns to normal, the spring 256 will reset the protective mechanism 25 to maintain a sealed state.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dustproof and sealed bearing housing with a negative pressure dust collection structure, characterized in that: The device includes a bearing housing (2), and the bearing housing (2) carries an installation body (1) on its inner side. The bearing housing (2) includes a cabin (21), and the outer side of the cabin (21) is connected to an air intake pipe (3) connected to an external vacuum pump. The top surface of the cabin (21) is fixedly connected to a dust-permeable shell (22), and the dust-permeable shell (22) is connected to the outer surface of the installation body (1). The inner side of the cabin (21) is provided with a control mechanism (23) and a dust-pushing mechanism (24). The control mechanism (23) and the dust-pushing mechanism (24) cooperate to push the dust adsorbed into the cabin (21) by negative pressure out of the cabin (21). The inner side of the cabin (21) is also provided with a guide mechanism (26), and the guide mechanism (26) guides the dust to the output side of the dust-pushing mechanism (24). When the amount of dust on the output side of the dust-pushing mechanism (24) accumulates to the target amount, the dust-pushing mechanism (24) will move towards the control mechanism (23) and drive the control mechanism (23) to start.

2. The dustproof and sealed bearing housing with a negative pressure dust collection structure according to claim 1, characterized in that: The control mechanism (23) includes a base (231), and an electric telescopic cylinder (232) is fixedly installed on the top surface of the base (231). A scissor arm (233) is provided on the outside of the electric telescopic cylinder (232), and an extension rod (234) is hinged to the end of the scissor arm (233) away from the electric telescopic cylinder (232). A moving rod (235) is fixedly installed at one end of the extension rod (234), and a moving sleeve (236) is provided at the end of the moving rod (235) away from the extension rod (234). A sliding rod (237) is slidably installed on the inner side of the moving sleeve (236), and the sliding rod (237) is fixedly connected to the base (231).

3. A dustproof and sealed bearing housing with a negative pressure dust collection structure according to claim 2, characterized in that: The ash pushing mechanism (24) includes a sliding sleeve (241) slidably disposed on the outside of the sliding rod (237), and a slider (242) is fixedly disposed on the bottom surface of the sliding sleeve (241). A push rod (243) is fixedly disposed on the slider (242), and a push plate (244) is fixedly disposed at the end of the push rod (243) away from the slider (242).

4. A dustproof and sealed bearing housing with a negative pressure dust collection structure according to claim 3, characterized in that: The movable sleeve (236) is provided with electrode block one (239), and the sliding sleeve (241) is provided with electrode block two (245). When electrode block one (239) and electrode block two (245) come into contact and cooperate, the external controller will be activated, and the controller will activate the electric telescopic cylinder (232).

5. A dustproof and sealed bearing housing with a negative pressure dust collection structure according to claim 2, characterized in that: The bottom surface of the cabin (21) is provided with a through balance hole (14), and a sealing seat (238) is fixedly provided below the movable sleeve (236). The sealing seat (238) is used to close or open the balance hole (14). When the electric telescopic cylinder (232) is in the initial state, the balance hole (14) is blocked. When the electric telescopic cylinder (232) is in the compressed state, the sealing seat (238) moves away from the balance hole (14) to balance the internal and external pressure difference.

6. A dustproof and sealed bearing housing with a negative pressure dust collection structure according to claim 1, characterized in that: The guiding mechanism (26) includes a guide plate (261) fixedly connected to the inner wall of the cabin (21), and the guide plate (261) is provided with a vent hole (262). The vent hole (262) is used to connect the dust chamber and the negative pressure chamber. A filter plate (263) is provided in the vent hole (262), and the filter plate (263) is used to block dust.

7. A dustproof and sealed bearing housing with a negative pressure dust collection structure according to claim 1, characterized in that: A protective mechanism (25) is also provided above the cabin (21), and the protective mechanism (25) penetrates the cabin (21) to connect the inside and outside of the cabin (21). The protective mechanism (25) includes a fixing block (251), and a hollow cylinder (252) that is slidably disposed with the cabin (21) is fixedly provided on one side of the fixing block (251). A limiting plate (253) is fixedly provided at one end of the hollow cylinder (252) away from the fixing block (251), and a ventilation groove (254) communicating with the hollow cylinder (252) is opened on the limiting plate (253). A vent (255) is opened on the side of the hollow cylinder (252) close to the fixing block (251).

8. A dustproof and sealed bearing housing with a negative pressure dust collection structure according to claim 7, characterized in that: A spring (256) is fixedly installed at the connection between the limiting plate (253) and the hollow cylinder (252), and the end of the spring (256) away from the limiting plate (253) is fixedly connected to the inner wall of the cabin (21).

9. A dustproof and sealed bearing housing with a negative pressure dust collection structure according to claim 5, characterized in that: The cockpit (21) is hinged with an electromagnetic door (27), and the electromagnetic door (27) is compatible with an external controller. When the closed seat (238) moves away from the balance hole (14) to balance the internal and external pressure difference, the controller controls the electromagnetic door (27) to open.

10. A dustproof and sealed bearing housing with a negative pressure dust collection structure according to claim 1, characterized in that: The mounting body (1) includes an outer bearing (13) connected to a transparent shell (22), and a bearing ring (12) is rolled on the inner side of the outer bearing (13). An inner bearing (11) is rolled on the inner side of the bearing ring (12), and the inner side of the inner bearing (11) is connected to the outer bearing body.

Images