Sealing structure and waterproof motor

Abstract

The utility model discloses a sealing structure which comprises a shell, a cover body and a rotating shaft, a containing cavity is formed in the shell, a mounting opening is formed in the shell, the mounting opening is communicated with the containing cavity, and the shell is provided with a sealing part around the mounting opening; the rotating shaft penetrates through the mounting opening; the cover body covers the mounting opening and is connected to the rotating shaft, and a gap exists between the sealing part and the cover body and is provided with an air outlet communicated with the outside; the shell is further provided with a first mounting cavity and an air inlet channel, the first mounting cavity communicates with the containing cavity and the gap, and the air inlet channel communicates with the gap and is suitable for introducing compressed air; the cover body comprises a second mounting cavity and communicates with the gap; wherein the sealing part is provided with a first tooth part; and / or the cover body is provided with a second tooth part; and the gap is formed between the first tooth part and the second tooth part. The sealing structure is simple in component, good in sealing effect and high in reliability, and the service life of rotating body equipment can be prolonged. The waterproof motor with the sealing structure also has the above advantages.

Description

Technical Field

[0001] The utility model relates to the technical field of driving device sealing, in particular to a sealing structure and a waterproof motor. Background Art

[0002] In industrial production, it is often necessary to drive the processing equipment to contact the workpiece through the rotating equipment to process the workpiece. In order to avoid the high temperature generated at the contact point between the high-speed rotating processing equipment and the workpiece, which affects the quality of the workpiece, or the overheating of the processing equipment, which causes equipment damage, it is often necessary to pour cooling water at the contact point between the processing equipment and the workpiece. Therefore, it is necessary to seal the rotating equipment without interfering with the operation of the rotating equipment to prevent splashing cooling water or waste generated during processing from entering the rotating equipment and affecting performance.

[0003] The above-mentioned rotating body equipment can be a motor, and the processing equipment is connected to the rotating shaft of the motor. The rotating shaft of the motor drives the processing equipment to process the workpiece through high-speed rotation. In the prior art, in order to extend the service life of the processing equipment and avoid long-term high-speed operation of the motor, which leads to accelerated wear of the seals at the contact point and affects the sealing effect, the connection between the static sealing structure and the dynamic sealing structure of the motor is generally a non-contact connection, and there is a gap between the two. At the same time, in order to prevent the splashing cooling water from entering the inside of the motor through the gap when pouring cooling water, an additional sealing cover will be provided on the outside, or a drainage hole will be designed inside. However, this method still has the hidden danger of water vapor entering the inside of the motor. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a sealing structure, which can improve the problem of poor sealing performance of rotating body equipment and extend the service life of the rotating body equipment.

[0005] The utility model also provides a waterproof motor with the sealing structure.

[0006] The sealing structure of the embodiment of the utility model comprises a shell, a cover body and a rotating shaft, wherein a containing cavity is arranged inside the shell, a mounting opening is arranged on the shell, the mounting opening is connected to the containing cavity, and a sealing portion is arranged around the mounting opening on the shell; the rotating shaft passes through the mounting opening; the cover body covers the mounting opening and is connected to the rotating shaft, a gap exists between the sealing portion and the cover body, and the gap has an air outlet connected to the outside; the shell is further provided with a first mounting cavity and an air inlet channel, the first mounting cavity can partially accommodate the rotating shaft, the first mounting cavity is connected to the containing cavity and the gap, the air inlet channel is connected to the gap, and the air inlet channel is suitable for introducing compressed gas; the cover body comprises a second mounting cavity, the second mounting cavity can partially accommodate the rotating shaft and is connected to the gap;

[0007] Wherein, the sealing portion is provided with a plurality of protruding first teeth toward the cover body; and / or the cover body is provided with a plurality of protruding second teeth toward the sealing portion; the gap is formed between the first teeth and the second teeth.

[0008] According to the sealing structure of the embodiment of the utility model, at least the following beneficial effects are achieved: the rotating body device is accommodated in the accommodating cavity of the shell, and at the same time, the rotating shaft of the rotating body device can be installed through the first installation cavity and the installation port in sequence, the cover body covers the installation port along the axis direction of the rotating shaft and is connected to the rotating shaft, the rotating shaft is accommodated in the first installation cavity and the second installation cavity, and rotates and outputs through the installation port, so that the shell and the cover body can prevent splashing liquid or processing waste from entering the interior of the rotating body device and affecting the operation of the device. It should be noted that there is still a gap between the cover body and the sealing part. When the rotating shaft drives the cover body to rotate relative to the sealing part, the wear caused by the mutual contact and friction between the two during the rotation process can be reduced, and the service life of the sealing structure and the rotating body device can be extended. In addition, in order to prevent splashing liquid or processing waste from entering the rotating body device from the gap, compressed gas is introduced into the air inlet channel, so that the gap connected to the air inlet channel is filled with compressed gas. As the rotating shaft runs, the compressed gas continuously overflows from the air outlet, so that the splashing liquid or processing waste cannot enter the gap from the opening, and then cannot enter the interior of the rotating body device, affecting the performance of the device.

[0009] Among them, a gap is formed between the first tooth portion of the sealing part and the second tooth portion of the cover body, and the gap is at least partially tortuous, so that when external water vapor enters the gap, the movement path in the gap is extended, which can reduce its speed after entering the gap. Therefore, the compressed gas in the gap can slowly bring the water vapor out from the air outlet, thereby ensuring the reliability of the sealing structure.

[0010] This method has simple sealing structural components and good sealing effect, can reduce the maintenance cycle of the rotating equipment, extend the service life of the rotating equipment, complement each other, and has high reliability.

[0011] According to some embodiments of the present invention, the first tooth portion and the second tooth portion are rectangular teeth, or the first tooth portion and the second tooth portion are conical teeth.

[0012] According to some embodiments of the utility model, the housing comprises a first housing and a second housing that are detachably connected, the second housing is provided with the accommodating cavity inside, the first housing is provided with the first installation cavity inside, and the sealing portion is provided on the first housing.

[0013] According to some embodiments of the present invention, the sealing structure further includes a waterproof component, which is connected to the first shell, and an opening is provided on a side of the waterproof component facing the cover body, and the opening gradually expands in a direction toward the cover body.

[0014] According to some embodiments of the utility model, the first shell has a supporting surface on the side facing the second shell, and the supporting surface is used to support the surface of the second shell on the side facing the first shell; the first shell has an avoidance portion on the side facing the second shell, and the avoidance portion is recessed from the supporting surface in a direction away from the second shell.

[0015] The waterproof motor of the second embodiment of the utility model includes the sealing structure of the first embodiment of the utility model, and the waterproof motor also includes a driving body and a bearing, the rotating shaft is connected to the driving body, the bearing abuts against the rotating shaft, the rotating shaft can rotate for output, and the sealing structure is used to seal the motor; the accommodating cavity is used to accommodate the driving body and the bearing, the rotating shaft passes through the mounting port and the bearing; the first mounting cavity and the second mounting cavity can both partially accommodate the rotating shaft.

[0016] The waterproof motor according to the second embodiment of the utility model has at least the following beneficial effects: when the waterproof motor is running, the shaft rotates, driving the processing equipment to rotate to process the workpiece, and at the same time, cooling water is poured on the processing part, and the shell can prevent splashing cooling water or grinding waste from entering the waterproof motor driving body and affecting the motor operation. During the processing, the shaft drives the cover body in the sealing structure to rotate relative to the shell, and because there is a gap between the cover body and the sealing part of the shell, the wear caused by the mutual contact friction during the rotation process is reduced, the sealing reliability is improved, and thus the service life of the waterproof motor is extended. In order to prevent splashing liquid or grinding waste from entering the waterproof motor from the gap, compressed gas is introduced into the air inlet channel, so that the gap connected to the air inlet channel is filled with compressed gas, and as the shaft rotates, the compressed gas continuously overflows from the air outlet, so that the splashing liquid or grinding waste cannot enter the gap from the opening, and then cannot enter the waterproof motor, affecting the performance.

[0017] According to some embodiments of the present invention, the waterproof motor further includes a seal, at least one of which is accommodated in the second installation cavity, and the seal is located between the cover body and the rotating shaft.

[0018] According to some embodiments of the present invention, the sealing member is connected to the rotating shaft and abuts against the cover body; or, the sealing member is connected to the cover body and abuts against the rotating shaft.

[0019] According to some embodiments of the utility model, the rotating shaft includes a rotating body and a limiting portion, at least two of the limiting portions are axially protrudingly arranged on the rotating body, and the limiting portions are suitable for resisting the cover body.

[0020] According to some embodiments of the present invention, the cover body includes a clamping portion, and the clamping portion is recessed relative to the limiting portion so that the limiting portion can be partially accommodated in the clamping portion.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the sealing mechanism structure of an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the waterproof motor structure of an embodiment of the utility model;

[0025] Figure 3 for Figure 2 A local enlarged schematic diagram of point A is shown;

[0026] Figure 4 for Figure 2 A schematic diagram showing the positional relationship among the shell, cover and rotating shaft.

[0027] Reference numerals:

[0028] Waterproof motor 100; driving body 110; rotating shaft 120; rotating body 121; limiting part 122; bearing 130;

[0029] Sealing structure 200;

[0030] Shell 210; accommodating cavity 211; mounting opening 212; third mounting cavity 213; sealing portion 214; first tooth portion 2141; first housing 215; first mounting cavity 2151; air inlet passage 2152; abutting surface 2153; avoidance portion 2154; second housing 216;

[0031] Cover body 220; second installation cavity 221; second tooth portion 222; clamping portion 223; air outlet 224;

[0032] Seal 230;

[0033] Waterproof member 240; opening 241;

[0034] Gap 250. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Reference Figures 1 to 3 ,in Figure 1 and Figure 2The sealing structure 200 of the embodiment of the utility model comprises a shell 210, a cover 220 and a rotating shaft 120. The shell 210 is provided with a receiving cavity 211 inside, and a mounting opening 212 is provided on the shell 210. The mounting opening 212 communicates with the receiving cavity 211. The shell 210 is provided with a sealing portion 214 around the mounting opening 212. The rotating shaft 120 passes through the mounting opening 212. The cover 220 covers the mounting opening 212 and is connected to the rotating shaft 120. There is a gap 250 between the sealing portion 214 and the cover 220. 250 has an air outlet 224 communicating with the outside; the housing 210 is further provided with a first installation cavity 2151 and an air inlet passage 2152, the first installation cavity 2151 can partially accommodate the rotating shaft 120, the first installation cavity 2151 communicates with the accommodating cavity 211 and the gap 250, the air inlet passage 2152 communicates with the gap 250, and the air inlet passage 2152 is suitable for passing compressed gas; the cover body 220 includes a second installation cavity 221, the second installation cavity 221 can partially accommodate the rotating shaft 120, and communicates with the gap 250;

[0041] The sealing portion 214 is provided with a plurality of protruding first teeth 2141 toward the cover 220 ; and / or the cover 220 is provided with a plurality of protruding second teeth 222 toward the sealing portion 214 ; a gap 250 is formed between the first teeth 2141 and the second teeth 222 .

[0042] When the sealing structure 200 is applied to a rotating body device, the rotating body device is accommodated in the accommodating cavity 211 of the shell 210, the rotating shaft 120 is accommodated in the first mounting cavity 2151 and the second mounting cavity 221, and rotates and outputs through the mounting port 212, and the cover body 220 is connected to the rotating shaft 120 and covers the mounting port 212 along the axial direction of the rotating shaft 120 to seal the mounting port 212, so that, without interfering with the rotational output of the rotating shaft 120, the shell 210 and the cover body 220 can prevent processing waste and splashing liquid from entering the accommodating cavity 211 from the mounting port 212 and contacting the rotating body device.

[0043] At the same time, there is a gap 250 between the cover 220 and the sealing part 214 of the shell 210. When the rotating shaft 120 drives the cover 220 to rotate relative to the sealing part 214, the two do not contact each other, which can avoid the wear caused by the mutual contact and friction between the two during the rotation process, and extend the service life of the sealing structure 200 and the rotating body equipment. In order to prevent splashing liquid or processing waste from entering the rotating body equipment from the gap 250, compressed gas is introduced into the air inlet channel 2152, so that the gap 250 connected to the air inlet channel 2152 is filled with compressed gas. As the rotating shaft 120 runs, the compressed gas continuously overflows from the air outlet 224, so that the splashing liquid or processing waste cannot enter the gap 250 from the opening 241, and then cannot enter the interior of the rotating body equipment, affecting the performance of the equipment.

[0044] It should be noted that a gap 250 is formed between the first tooth portion 2141 of the sealing portion 214 and the second tooth portion 222 of the cover body 220. The gap 250 is tortuous along the tooth portion, so that when external water vapor enters the gap 250, the movement path in the gap 250 is longer and more tortuous, which can reduce its speed after entering the gap 250. Therefore, the compressed gas in the gap 250 can slowly bring the water vapor out from the air outlet 224, thereby ensuring the reliability of the sealing structure 200.

[0045] The first tooth portion 2141 and the second tooth portion 222 may constitute a labyrinth seal structure 200 , which has a throttling effect on the fluid, can reduce the velocity and temperature of the liquid entering the gap 250 , and improve the reliability of the seal structure 200 .

[0046] The sealing structure 200 of this type has simple components and good sealing effect, which can reduce the maintenance cycle of the rotating body equipment and extend the service life of the rotating body equipment. The two are complementary and have high reliability.

[0047] The gap 250 is formed between the first tooth portion 2141 of the sealing portion 214 and the second tooth portion 222 of the cover body 220, and there are various forms. In the first embodiment, the sealing portion 214 is provided with a plurality of protruding first tooth portions 2141 toward the cover body 220, and the cover body 220 is provided with a first plane toward the sealing portion 214, and the gap 250 is formed between the first plane and the first tooth portion 2141; in the second embodiment, the sealing portion 214 is provided with a second plane toward the cover body 220, and the cover body 220 is provided with a plurality of protruding second tooth portions 222 toward the sealing portion 214, and the gap 250 is formed between the second plane and the second tooth portion 222. The above-mentioned gap 250 is tortuous along the tooth portion, so that when external water vapor enters the gap 250, the movement path in the gap 250 is long and tortuous, which can reduce its speed after entering the gap 250, so that the compressed gas in the gap 250 can slowly bring the water vapor out from the gas outlet 224, thereby ensuring the reliability of the sealing structure 200.

[0048] Reference Figures 1 to 3In the sealing structure 200 of the embodiment of the utility model, the first tooth portion 2141 and the second tooth portion 222 are rectangular teeth, and the first tooth portion 2141 and the second tooth portion 222 are arranged alternately, so that a tortuous gap 250 is formed between the first tooth portion 2141 and the second tooth portion 222. When the rotating body equipment is running, when the rotating shaft 120 drives the cover body 220 to rotate relative to the sealing portion 214, the compressed gas is introduced into the air inlet channel 2152, so that the gap 250 connected to the air inlet channel 2152 is filled with compressed gas. As the rotating shaft 120 runs, the compressed gas is driven by the cover body 220 and moves along the gap 250 to the air outlet 224, so that the air outlet 224 overflows continuously. In addition, the splashing liquid or processing waste cannot enter the accommodating chamber 211 from the gap 250 and contact the inside of the rotating body equipment, affecting the performance of the equipment. In some other embodiments, the first tooth portion 2141 and the second tooth portion 222 are conical teeth, which also have the above-mentioned beneficial effects.

[0049] Reference Figures 1 to 3 In the sealing structure 200 of the embodiment of the utility model, the housing 210 includes a first shell 215 and a second shell 216 which are detachably connected. The second shell 216 is provided with a receiving cavity 211, the first shell 215 is provided with a first installation cavity 2151, and the sealing portion 214 is provided on the first shell 215. When installing the sealing structure 200 on the rotating body equipment, firstly, the first shell 215 and the second shell 216 can be disassembled and separated, and the rotating body equipment is partially placed in the receiving cavity 211, and the rotating shaft 120 on the rotating device faces the direction of the installation port 212. Secondly, the first shell 215 and the cover body 220 are placed in sequence along the axial direction of the rotating shaft 120, and the first installation cavity 2151 of the first shell 215 and the second installation cavity 221 of the cover body 220 can allow the rotating shaft 120 to pass through, so that the rotating shaft 120 can be partially outside the sealing structure 200 for rotation output. It should be noted that sequentially installing the first housing 210 and the cover 220 helps to coordinate the first tooth portion 2141 and the second tooth portion 222, thereby improving the accuracy of the installation position. The installation method is simple and reasonable, the components are tightly connected, it is easy to observe whether they are installed in place, and the reliability after installation is high.

[0050] Reference Figures 1 to 3The sealing structure 200 of the embodiment of the utility model further includes a waterproof member 240, which is connected to the first shell 215. The waterproof member 240 is provided with an opening 241 on the side facing the cover body 220, and the opening 241 gradually expands in the direction toward the cover body 220, so that when the rotating shaft 120 of the rotating body equipment rotates to drive the processing equipment to rotate, the splashed liquid and processing waste during processing are splashed on the inner wall of the waterproof member 240, and can flow away or fall along the expansion direction of the opening 241, thereby reducing the water vapor content at the processing location and preventing water vapor from entering the accommodating cavity 211 inside the shell 210 and contacting the rotating body equipment to affect the performance.

[0051] Reference Figures 1 to 3 In the sealing structure 200 of the embodiment of the utility model, the first shell 215 has a supporting surface 2153 on the side facing the second shell 216, and the supporting surface 2153 is used to support the surface of the second shell 216 facing the first shell 215; the first shell 215 is provided with a avoiding portion 2154 on the side facing the second shell 216, and the avoiding portion 2154 is recessed from the supporting surface 2153 in the direction away from the second shell 216, so that when installing the rotating body equipment, during the installation process of the first shell 215 facing the second shell 216, it can be determined that the first shell 215 is installed in place after the supporting surface 2153 resists the surface of the second shell 216 facing the first shell 215, thereby improving the installation accuracy. At the same time, the avoiding portion 2154 can avoid the second shell 216 to reduce mutual wear and extend the service life of the sealing structure 200.

[0052] The sealing structure 200 can be applied to multiple scenarios, such as sealing of motors.

[0053] Reference Figures 1 to 4 ,in Figure 1 and Figure 2 The waterproof motor 100 of the embodiment of the utility model comprises the sealing structure 200 of the embodiment of the first aspect of the utility model, and the waterproof motor 100 further comprises a driving body 110 and a bearing 130, the rotating shaft 120 is connected to the driving body 110, the bearing 130 abuts against the rotating shaft 120, the rotating shaft 120 can rotate for output, the sealing structure 200 is used to seal the waterproof motor 100; the accommodating cavity 211 is used to accommodate the driving body 110 and the bearing 130, the rotating shaft 120 passes through the mounting opening 212 and the bearing 130; the first mounting cavity 2151 and the second mounting cavity 221 can both partially accommodate the rotating shaft 120.

[0054] When the waterproof motor 100 is used, the sealing structure 200 is used to seal the waterproof motor 100, and the rotating shaft 120 is convenient for connecting the processing parts to rotate the processing parts to achieve the processing operation, for example, it is connected to the grinding wheel to grind the edge of the glass to make the glass edge smoother, reduce burrs, and improve the quality of the glass products. It is not difficult to understand that it can also be used to process other parts to be processed.

[0055] A housing 210 of the sealing structure 200 is provided with an accommodating chamber 211 for accommodating the driving body 110 and the bearing 130. An installation opening 212 is provided on the housing 210, and the installation opening 212 is connected to the accommodating chamber 211. The rotating shaft 120 passes through the installation opening 212 and the bearing 130, so as to facilitate the installation of the waterproof motor 100 in the housing 210. At least a part of the rotating shaft 120 is located outside the housing 210 to connect the processing parts to realize the processing of the workpiece to be processed; the sealing structure 200 includes a sealing portion 214 and a cover body 220 of the housing 210 arranged relatively along the axial direction of the rotating shaft 120. The cover body 220 is connected to the rotating shaft 120. There is a gap 250 between the sealing portion 214 of the housing 210 and the cover body 220, so that when the cover body 220 rotates with the rotating shaft 120, there is no contact between the sealing portion 214 and the cover body 220, thereby reducing mutual wear and improving the service life. Meanwhile, the gap 250 has a gas outlet 224 connected to the outside, so as to transport gas to the outside.

[0056] Among them, the shell 210 includes a first installation cavity 2151 and an air inlet channel 2152. The first installation cavity 2151 can partially accommodate the rotating shaft 120 and is connected to the gap 250. The air inlet channel 2152 is connected to the gap 250, and the air inlet channel 2152 is suitable for passing compressed gas; the cover body 220 includes a second installation cavity 221. The second installation cavity 221 can partially accommodate the rotating shaft 120 and is connected to the gap 250, so as to facilitate the delivery of compressed gas to the gap 250 and output it through the outlet 224.

[0057] When the processing equipment is running, the rotating shaft 120 of the waterproof motor 100 rotates, driving the grinding wheel connected to the rotating shaft 120 to rotate and grind the edge of the glass. At the same time, cooling water is poured on the grinding area. The housing 210 can prevent splashing cooling water or grinding waste from entering the driving body 110 of the waterproof motor 100 and affecting the operation of the waterproof motor 100. During the grinding process, the rotating shaft 120 rotates, causing the cover 220 connected to the rotating shaft 120 to rotate relative to the sealing part 214 of the housing 210. Since there is a gap 250 between the cover 220 and the sealing part 214, the wear caused by mutual friction during the rotation process is avoided, and the service life of the sealing structure 200 is extended, thereby extending the service life of the processing equipment.

[0058] In order to prevent the splashing cooling water or grinding waste from entering the waterproof motor 100 from the gap 250 during the processing, compressed gas is introduced into the air inlet channel 2152, so that the gap 250 connected to the air inlet channel 2152 is filled with compressed gas. As the waterproof motor 100 runs, the compressed gas is affected by the rotation of the cover 220. Based on the pressure difference between the compressed gas and the outside atmosphere, the compressed gas will continue to overflow from the air outlet 224. As a result, the splashing liquid or grinding waste is blocked by the overflowing gas and cannot enter the gap 250 from the air outlet 224. Furthermore, it cannot enter the housing 210 and contact the waterproof motor 100, affecting the performance of the waterproof motor 100. It should be noted that in order to improve the sealing effect of the sealing structure 200, when the processing equipment is in operation, the compressed gas will continue to be introduced into the air inlet channel 2152 to ensure that the compressed gas continues to overflow from the air outlet 224, thereby improving the sealing stability. The introduction of compressed gas can be stopped as needed, or when the equipment stops running. The air inlet channel 2152 can be externally connected to the air inlet pipe, and a solenoid valve can be set at the air outlet end. The delivery and stopping of compressed gas can be controlled by opening and closing the solenoid valve.

[0059] In addition, in order to prevent the compressed gas pressure from being too high and affecting the operation of the cover 220 or the coordination of the components in the sealing structure 200, the difference between the compressed gas pressure and the external environment pressure is relatively small.

[0060] Reference Figure 1 , Figure 2 and Figure 3 In the waterproof motor 100 of the embodiment of the utility model, the sealing portion 214 of the housing 210 is provided with a plurality of protruding first teeth 2141 toward the cover 220; and / or the cover 220 is provided with a plurality of protruding second teeth 222 toward the sealing portion 214 of the housing 210; a gap 250 is formed between the first teeth 2141 and the second teeth 222 to store compressed gas. In this way, a labyrinth seal structure can be formed between the sealing portion 214 of the housing 210 and the cover 220. The labyrinth seal structure can produce a throttling effect on the fluid passing through the gap, and can prevent splashing cooling water from entering the housing 210 through the gap 250 formed between the first teeth 2141 and the second teeth 222, thereby affecting the performance of the waterproof motor 100.

[0061] In the first embodiment, the sealing portion 214 of the shell 210 is provided with a plurality of protruding first teeth 2141 toward the cover body 220, and the sealing portion 214 of the cover body 220 toward the shell 210 is provided with a plurality of protruding second teeth 222, and the first teeth 2141 and the second teeth 222 are staggered to form a tortuous gap 250 therebetween. When the processing equipment is running, the shaft 120 of the waterproof motor 100 rotates, driving the grinding wheel to rotate to grind the edge of the glass. Cooling water is continuously poured at the grinding point. At the same time, compressed gas is introduced into the air inlet channel 2152, so that the gap 250 connected to the air inlet channel 2152 is filled with compressed gas. Therefore, during the grinding process, the shaft 120 drives the cover body 220 to rotate relative to the sealing portion 214 of the shell 210. When the second tooth portion 222 rotates relative to the first tooth portion 2141, the compressed gas is affected by the rotation of the first tooth portion 2141. Based on the pressure difference between the compressed gas and the external atmosphere, the compressed gas will continuously overflow from the air outlet 224. Therefore, the splashing liquid or grinding waste is blocked by the overflowing gas and cannot enter the gap 250 from the air outlet 224. Furthermore, it cannot enter the interior of the shell 210 and contact the waterproof motor 100, affecting the performance of the waterproof motor 100.

[0062] It should be noted that, since the first tooth portion 2141 and the second tooth portion 222 are interlaced with each other, a tortuous gap 250 is formed between the two, and the flow path of the compressed gas in the gap 250 becomes longer, so that the internal liquid can be brought out from the gas outlet 224 along with the flow of the compressed gas, thereby improving the sealing performance. In addition, when the second tooth portion 222 rotates relative to the first tooth portion 2141, the compressed gas is affected by the rotation of the first tooth portion 2141, the flow capacity is improved, and the speed of output from the gas outlet 224 is accelerated, thereby increasing the energy of preventing water vapor from entering the gap 250 and improving the reliability of the sealing structure 200.

[0063] In the second embodiment, the sealing portion 214 is provided with a plurality of protruding first teeth 2141 toward the cover 220, and a first plane is provided on one side of the cover 220 toward the sealing portion 214, and a gap 250 is formed between the first teeth 2141 and the first plane to store compressed gas. Compared with the first embodiment, this method has a larger compressed gas storage space, thereby ensuring that compressed gas continuously overflows from the gas outlet 224, improving the sealing performance of the sealing structure 200, and improving the service life of the waterproof motor 100.

[0064] Similarly, in the third embodiment, the cover 220 is provided with a plurality of protruding second teeth 222 toward the sealing portion 214, and the sealing portion 214 of the housing 210 is provided with a second plane on one side toward the cover 220, and a gap 250 is formed between the second teeth 222 and the second plane to store compressed gas. The advantages of the second embodiment are also possessed.

[0065] Reference Figure 1 and Figure 2 In the waterproof motor 100 of the embodiment of the utility model, the sealing structure 200 also includes a sealing member 230. At least one sealing member 230 is accommodated in the second installation cavity 221. The sealing member 230 is located between the cover body 220 and the rotating shaft 120, and can respectively abut against the inner wall of the second installation cavity 221 and the outer surface of the rotating shaft 120, thereby improving the sealing performance between the rotating shaft 120 and the cover body 220, and preventing the splashing cooling water from the rotating shaft 120 and the cover body 220 from entering the inside of the shell 210 and contacting the waterproof motor 100 during the operation of the processing equipment, thereby affecting the performance of the waterproof motor 100. It should be noted that the seal 230 can be an O-shaped rubber ring. The O-shaped rubber ring is arranged on the part of the rotating shaft 120 accommodated in the second installation cavity 221, which can increase the friction between the inner wall of the second installation cavity 221 and the O-shaped rubber ring, and increase the friction between the outer surface of the rotating shaft 120 and the O-shaped rubber ring. When the cover body 220 rotates with the rotating shaft 120, the rotation synchronization rate is higher, thereby avoiding the relative displacement between the rotating shaft 120 and the cover body 220 and improving stability.

[0066] Reference Figure 1 and Figure 2 In the waterproof motor 100 of the embodiment of the utility model, the seal 230 is connected to the rotating shaft 120 and abuts against the cover body 220. When the rotating shaft 120 is accommodated in the second installation cavity 221, the seal 230 abuts against the inner wall of the second installation cavity 221, so that the sealing performance between the seal 230 and the second cover is better and the friction force is stronger. Therefore, during the operation of the processing equipment, the rotation of the rotating shaft 120 of the waterproof motor 100 drives the grinding wheel to rotate to grind the edge of the glass. At the same time, when cooling water is poured on the grinding part, it can prevent splashing cooling water or grinding waste from entering the housing 210 from the rotating shaft 120 and the cover body 220, contacting the driving body 110 of the waterproof motor 100, and affecting the operation of the waterproof motor 100. In addition, the connection stability between the rotating shaft 120 and the second cover is higher, which can ensure the grinding quality. In some other embodiments, the seal 230 is connected to the cover body 220 and abuts against the rotating shaft 120. When the rotating shaft 120 is placed in the second installation cavity 221, the seal 230 is held against the outer surface of the rotating shaft 120, so that the sealing between the seal 230 and the second cover is better and the friction is stronger. This method also has the above-mentioned beneficial effects.

[0067] Reference Figure 1 and Figure 2In the waterproof motor 100 of the utility model embodiment, the rotating shaft 120 includes a rotating body 121 and a limiting portion 122. At least two limiting portions 122 are axially protruding and arranged on the rotating body 121. The limiting portions 122 are suitable for abutting against the cover 220. The two limiting portions 122 are respectively abutted against the two sides of the cover 220 along the axis direction of the rotating shaft 120 to limit the position of the cover 220. When the processing equipment is running, the cover 220 connected to the rotating body 121 rotates relative to the sealing portion 214, and the cover 220 does not generate displacement in the axis direction of the rotating shaft 120, thereby improving the stability of the cover 220 and thus improving the sealing reliability. At the same time, the limiting portion 122 can also prevent the splashing cooling water from entering the housing 210 from the connection between the cover 220 and the rotating shaft 120, and contacting the waterproof motor 100, which affects the performance of the waterproof motor 100 and reduces the service life.

[0068] Reference Figures 1 to 3 In the waterproof motor 100 of the utility model embodiment, the cover body 220 includes a clamping portion 223, and the clamping portion 223 is recessed relative to the limiting portion 122 so that the limiting portion 122 can be partially accommodated in the clamping portion 223, so that when the processing equipment is running, the cover body 220 connected to the rotating body 121 rotates relative to the sealing portion 214, and the cover body 220 will not be displaced in the axial direction of the rotating shaft 120, thereby improving the stability of the cover body 220 and thus improving the sealing reliability.

[0069] Reference Figures 1 to 4 In the waterproof motor 100 of the embodiment of the utility model, the shell 210 includes a third installation cavity 213, the third installation cavity 213 is located on the side of the accommodating cavity 211 facing the cover body 220, the third installation cavity 213 is connected to the installation port 212, the rotating shaft 120 can pass through the installation port 212 and be partially accommodated in the third installation cavity 213, the bearing 130 is accommodated in the third installation cavity 213, and is located between the rotating shaft 120 and the shell 210, so that the bearing 130 can be installed.

[0070] It should be noted that the third installation cavity 213 is smaller than the accommodating cavity 211 , which is convenient for positioning the rotating shaft 120 and reduces the sealing area of ​​the connection between the rotating shaft 120 and the housing 210 .

[0071] Reference Figures 1 to 3In the waterproof motor 100 of the utility model embodiment, the first shell 215 has a supporting surface 2153 on the side facing the second shell 216. The supporting surface 2153 is used to support the surface of the bearing 130 on the side facing the first shell 215, so that when the processing equipment is running, after the compressed gas enters the air inlet channel 2152 and fills the gap 250, it will not enter the accommodating cavity 211 from the side of the first shell 215 facing the bearing 130, avoiding the reduction of the compressed gas amount, ensuring that the compressed gas can continuously overflow from the outlet 224, preventing the splashing cooling water from entering the gap 250, and improving the sealing reliability.

[0072] The bearing 130 of the waterproof motor 100 is provided with a rotor inside, which can reduce the friction between the rotating shaft 120 and the sealing portion 214 of the housing 210 to a minimum. Figures 1 to 3 In the waterproof motor 100 of the utility model embodiment, a first housing 215 is provided with a relief portion 2154 on the side facing the second housing 216. The relief portion 2154 is used to avoid the surface of the bearing 130 facing the first housing 215, so that when the rotor is rotated by the rotation shaft 120, the rotor moves corresponding to the relief portion 2154, avoiding mutual friction between the rotor and the first housing 215, thereby reducing rotor wear, ensuring the use effect of the bearing 130, and extending the service life of the bearing 130. It should be noted that the relief portion 2154 can be a groove, so that when the rotor is rotated by the rotation shaft 120, the rotor moves corresponding to the groove part, and does not generate mutual friction with the first housing 215, thereby reducing rotor wear, ensuring the use effect of the bearing 130, and extending the service life of the bearing 130.

[0073] Reference Figure 1 and Figure 2 In the waterproof motor 100 of the embodiment of the utility model, the sealing structure 200 also includes a waterproof member 240, which is connected to the first shell 215. An opening 241 is provided on the side of the waterproof member 240 away from the cover body 220, and the opening 241 gradually expands in the direction away from the cover body 220, so that during the operation of the processing equipment, the rotation shaft 120 of the waterproof motor 100 drives the grinding wheel to rotate to grind the edge of the glass. At the same time, when cooling water is poured on the grinding place, the splashed cooling water or grinding waste splashes on the inner wall of the waterproof member 240, and can flow away or fall along the expansion direction of the opening 241, thereby reducing the water vapor content at the grinding place, preventing water vapor from entering the accommodating cavity 211 inside the shell 210, contacting the waterproof motor 100, and affecting the performance of the waterproof motor 100.

[0074] Reference Figure 1 and Figure 2The waterproof motor 100 of the second embodiment of the utility model can be applied to glass processing equipment. The glass processing equipment includes a waterproof motor 100 and a processing part, the processing part is connected to the waterproof motor 100 to rotate with the waterproof motor 100, and the sealing structure 200 is used to seal the motor, so that when the glass processing equipment is running, the waterproof motor 100 rotates to drive the processing part to rotate to achieve glass processing. At the same time, the sealing structure 200 can prevent water vapor or waste materials in the processing process from contacting the waterproof motor 100, affecting the performance of the waterproof motor 100, and further affecting the use effect of the glass processing equipment.

[0075] It should be noted that the glass processing equipment can be a glass edge grinding equipment, and the workpiece can be a grinding wheel. The grinding wheel is connected to the rotating shaft 120 of the waterproof motor 100 and rotates with the rotating shaft 120. During the glass edge grinding process, the glass processing equipment is started, and the grinding wheel rotates with the rotating shaft 120 to grind the edge of the glass. Since grinding generates heat, in order to avoid heat deformation of the glass, cooling water is continuously poured at the grinding location. The housing 210 can prevent splashing cooling water or grinding waste from entering the driving body 110 of the waterproof motor 100 and affecting the operation of the waterproof motor 100. During the grinding process, the rotating shaft 120 rotates, so that the cover 220 connected to the rotating shaft 120 rotates relative to the sealing portion 214 of the housing 210. Since there is a gap 250 between the cover 220 and the sealing portion 214 of the housing 210, the wear caused by mutual friction during the rotation process is avoided, and the service life of the sealing structure 200 is extended, thereby extending the service life of the glass edge grinding equipment.

[0076] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. Sealing structure, characterized in that: include: A housing, wherein a housing cavity is provided inside the housing, a mounting opening is provided on the housing, the mounting opening is communicated with the housing cavity, and a sealing portion is provided on the housing around the mounting opening; A rotating shaft, the rotating shaft passing through the installation opening; A cover body, the cover body covers the installation opening and is connected to the rotating shaft, a gap exists between the sealing portion and the cover body, and the gap has an air outlet connected to the outside; The housing is further provided with a first installation cavity and an air inlet passage, wherein the first installation cavity is capable of partially accommodating the rotating shaft, the first installation cavity is connected to the accommodating cavity and the gap, the air inlet passage is connected to the gap, and the air inlet passage is suitable for introducing compressed gas; the cover body includes a second installation cavity, the second installation cavity is capable of partially accommodating the rotating shaft and is connected to the gap; Wherein, the sealing portion is provided with a plurality of protruding first teeth toward the cover body; and / or the cover body is provided with a plurality of protruding second teeth toward the sealing portion; the gap is formed between the first teeth and the second teeth.

2. The sealing structure according to claim 1, characterized in that: The first tooth portion and the second tooth portion are rectangular teeth, Alternatively, the first tooth section and the second tooth section are conical teeth.

3. The sealing structure according to claim 2, characterized in that: The housing comprises a first shell and a second shell which are detachably connected, the second shell is provided with the accommodating cavity inside, the first shell is provided with the first installation cavity inside, and the sealing part is provided on the first shell.

4. The sealing structure according to claim 3, characterized in that: The sealing structure further comprises a waterproof component, wherein the waterproof component is connected to the first shell, and an opening is provided on a side of the waterproof component facing the cover body, and the opening gradually expands in a direction toward the cover body.

5. The sealing structure according to claim 3, characterized in that: The first shell has a supporting surface on one side facing the second shell, and the supporting surface is used to support the surface of the second shell facing the first shell; A relief portion is provided on a side of the first shell facing the second shell, and the relief portion is recessed from the supporting surface in a direction away from the second shell.

6. Waterproof motor, characterized in that, The invention comprises the sealing structure according to any one of claims 1 to 5, and the waterproof motor further comprises a driving body and a bearing, the rotating shaft is connected to the driving body, the bearing abuts against the rotating shaft, the rotating shaft can rotate for output, and the sealing structure is used to seal the waterproof motor; The accommodating cavity is used to accommodate the driving body and the bearing, and the rotating shaft passes through the mounting opening and the bearing; The first installation cavity and the second installation cavity can both partially accommodate the rotating shaft.

7. The waterproof motor according to claim 6, characterized in that: The waterproof motor further comprises a seal, at least one of which is accommodated in the second mounting cavity, and the seal is located between the cover body and the rotating shaft.

8. The waterproof motor according to claim 7, characterized in that: The sealing member is connected to the rotating shaft and abuts against the cover body; or the sealing member is connected to the cover body and abuts against the rotating shaft.

9. The waterproof motor according to claim 6, characterized in that: The rotating shaft comprises a rotating body and a limiting portion, at least two of the limiting portions are axially protrudingly arranged on the rotating body, and the limiting portions are suitable for abutting against the cover body.

10. The waterproof motor according to claim 9, characterized in that: The cover body comprises a clamping portion, and the clamping portion is recessed relative to the limiting portion so that the limiting portion can be partially accommodated in the clamping portion.

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