Sealing gearbox
By using a combination of three-lip sealing ring and O-type sealing ring in the sealing gear box, the problem of insufficient sealing properties of the second lip is solved, the sealing effect is increased, the risk of wear and gap is reduced, the sealing ability and service life is improved, and the sealing ability and service life is enhanced. Stability and practicality.
Patent Information
- Application Number
- CN202323645423.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The sealing properties of the second lip seal in the existing sealing gearbox cannot be guaranteed, resulting in visible foreign objects in the gearbox leaking, and the outer part of the second lip seal ring is wrapped by 316L stainless steel, which increases the risk of communication and is easy to seal the lips. Wear, poor effect.
采用三唇密封圈和O型密封圈的组合，增加密封圈，密封唇直接安装在密封唇支座内，减少磨损，并在密封唇外侧设置O型密封圈以增强密封性，通过连接管、连接环和密封环固定输出轴和固定轴，提高密封性和使用寿命。
It effectively increases the sealing effect, reduces wear of the sealing lip, reduces the risk of gaps, improves sealing and service life, avoids the scattered items and the gaps at the connections, and enhances the stability and practicality of the device.
Smart Images
Figure CN222229380U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealed boxes, in particular to a sealed gear box. Background Art
[0002] A sealed gearbox is a device that combines the transmission of a gear device with the seal of a bearing. This device ensures that during operation, the normal operation will not be affected by the entry of foreign impurities, moisture or gas. Sealed gearboxes are widely used in various mechanical transmission systems, such as ships, chemicals, pharmaceuticals, food processing and other fields. Its characteristics are that it can maintain good lubrication conditions for gears and bearings for a long time, prevent oil seal deformation, aging, failure and other problems, thereby improving the stability and service life of the equipment. The advantages of sealed gearboxes are that they can reduce pollution to the environment, reduce maintenance costs, and improve work efficiency.
[0003] In the prior art sealed gearbox, the sealing lip is a two-lip seal. During the production process, the sealing performance of the sealing lip cannot be guaranteed, and the risk of visible foreign matter in the gearbox leaking into the raw material through the sealing lip increases. The thickness of the sealing lip can only be observed with the naked eye as a standard for replacing the sealing lip, which increases the uncontrollable factors of human beings. In the prior art sealed gearbox, since the outside of the two-lip sealing ring is wrapped with 316L stainless steel and installed in the sealing lip seat by the interference fit principle, there will be an uncontrollable gap between the sealing lip shell and the sealing lip seat, which increases the risk of communication between the inner cavity of the gearbox and the outside world. When there are only two sealing lips between the output shaft and the two-lip sealing ring, they are easy to wear and the sealing effect is poor. The sealing lip shell and the sealing lip support are metal hard fits, which are purely at the risk of gaps. Therefore, it does not meet the existing needs. We have proposed a sealed gearbox for this purpose. Utility Model Content
[0004] The utility model provides a sealed gearbox, which has the beneficial effects of increasing the sealing effect while reducing the wear of the sealing lip, and solves the problem that the sealing lip in the prior art sealed gearbox mentioned in the above background technology is a two-lip seal, the sealing performance of the sealing lip cannot be guaranteed during the production process, the risk of visible foreign matter in the gearbox leaking into the raw material through the sealing lip increases, and the thickness of the sealing lip can only be observed by naked eyes as a standard for replacing the sealing lip, which increases the uncontrollable factors of human beings; in the prior art sealed gearbox, since the outside of the two-lip sealing ring is wrapped by 316L stainless steel and installed in the sealing lip seat by the interference fit principle, there will be an uncontrollable gap between the sealing lip shell and the sealing lip seat, which increases the risk of communication between the inner cavity of the gearbox and the outside world, when there are only two sealing lips between the output shaft and the two-lip sealing ring, it is easy to wear and the sealing effect is poor, and the sealing lip shell and the sealing lip support are metal hard fit, which has the problem of the risk of gaps.
[0005] The utility model provides the following technical solution: a sealed gearbox, comprising a box body, a connecting pipe plugged into the side of the box body, a connecting ring connected to the side of the connecting pipe, a sealing ring fixedly connected to the side of the connecting ring, an end of the connecting pipe plugged into a reinforcement block, a stabilizing block fixedly installed on the side of the reinforcement block, and the reinforcement block and the connecting pipe are fixedly connected to the sealing ring through the connecting ring;
[0006] A connecting column is sleeved in the middle of the connecting pipe, a fixed shaft is connected to the bottom of the connecting column, a slot is provided at the bottom of the fixed shaft, an output shaft is snap-connected in the middle of the slot, a mounting slot is provided on the side of the output shaft, a three-lip sealing ring is snap-connected in the middle of the mounting slot.
[0007] As an optional solution for a sealed gearbox described in the utility model, the three-lip sealing ring includes a first contact block, the first contact block contacts the side of the output shaft, a second contact block is arranged below the first contact block, a third contact block is connected below the second contact block, and the second contact block and the third contact block are both in contact with the output shaft.
[0008] As an optional solution for a sealed gearbox described in the utility model, a sealing groove is provided on the side of the three-lip sealing ring, an O-ring is installed in the middle of the sealing groove, the O-ring is in contact with the sealing groove, and a sealing lip support is snap-connected to the side of the three-lip sealing ring.
[0009] As an optional solution for a sealed gearbox described in the utility model, wherein: the side of the sealing lip support is connected to a connecting plate, a limiting plate is fixedly installed above the connecting plate, a limiting groove is opened above the limiting plate, and the middle part of the limiting groove is engaged and connected to a limiting sealing block.
[0010] As an optional solution for a sealed gearbox described in the utility model, a sealing lip shell is installed on the side of the fixed shaft, a connecting shell is connected to the side of the sealing lip shell, a fixed shell is installed on the side of the connecting shell, and a clamp is fixedly connected to the side of the fixed shell.
[0011] As an optional solution for a sealed gearbox according to the utility model, a conveying groove is provided above the box body, a conveying port is installed above the conveying groove, and the clamping block is clamped and connected with the reinforcement block.
[0012] As an optional solution for a sealed gearbox described in the utility model, the three-lip sealing ring, the O-ring and the limiting sealing block are all configured as rubber sealing rings or sealing blocks, the O-ring is in full contact with the sealing groove, and the sealing groove is configured as a rectangular groove.
[0013] As an optional solution for a sealed gearbox described in the utility model, wherein: the installation groove is set as a rectangular groove, the conveying groove is set as a circular groove, and the sealing lip shell, the connecting shell and the fixing shell are all set as plastic shells.
[0014] The utility model has the following beneficial effects:
[0015] 1. The sealed gearbox, through the arrangement of the three-lip seal ring and the O-ring, adds an extra seal ring between the original two-lip seal rings, thereby increasing the sealing effect and reducing the wear of the seal lip. The seal lip is directly installed in the seal lip support to reduce the risk of gaps between the seal lip housing and the support due to the original too hard fit, and an O-ring is added to the outer side of the seal lip to further seal the seal lip support and the seal lip housing. The arrangement of the first contact block, the second contact block and the third contact block improves the sealing performance of the device during operation as much as possible during the installation and use of the device. The arrangement of the connecting pipe, the connecting ring and the seal ring ensures that the output shaft and the fixed shaft are protected as much as possible during the use of the device, thereby improving the service life of the device as much as possible.
[0016] 2. The sealed gearbox, through the setting of the conveying port, can reduce the scattering of articles as much as possible when the articles are placed in the box body. Through the setting of the connecting ring and the sealing ring, the sealing performance of the device after installation can be further enhanced, and the generation of gaps at the connection parts that affect the practical effect of the device during use can be avoided as much as possible. Through the setting of the stabilizing block and the reinforcing block, the stability of the device during use can be improved as much as possible, and the service life of the device can also be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0018] Figure 2 It is a schematic diagram of the side structure of the conveying shaft of the utility model.
[0019] Figure 3 It is a schematic diagram of the conveying shaft structure of the utility model when viewed from above.
[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the conveying shaft connection of the utility model.
[0021] In the figure: 110, output shaft; 120, three-lip seal ring; 130, O-ring; 140, seal groove; 150, seal lip support; 160, limit seal block; 170, limit groove; 180, clamping groove; 190, fixed shaft; 200, installation groove; 210, connecting shell; 220, fixing shell; 230, clamping block; 240, housing; 250, stabilizing block; 260, reinforcing block; 270, connecting ring; 280, seal ring; 290, connecting pipe; 300, delivery port; 310, delivery groove; 320, seal lip housing; 330, connecting plate; 340, limit plate; 350, connecting column; 15, first contact block; 14, second contact block; 13, third contact block. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Embodiment 1: This embodiment aims to solve the problem that the sealing lip of the existing sealed gearbox is a two-lip seal, the sealing performance of the sealing lip cannot be guaranteed during the production process, the risk of visible foreign matter in the gearbox leaking into the raw material through the sealing lip increases, and the thickness of the sealing lip can only be observed by naked eyes as a standard for replacing the sealing lip, which increases the problem of uncontrollable factors caused by human factors. Please refer to Figure 1-Figure 4A sealed gearbox includes a box body 240, a connecting pipe 290 is plugged into the side of the box body 240, a connecting ring 270 is connected to the side of the connecting pipe 290, a sealing ring 280 is fixedly connected to the side of the connecting ring 270, an end of the connecting pipe 290 is plugged into a reinforcing block 260, a stabilizing block 250 is fixedly installed on the side of the reinforcing block 260, the reinforcing block 260 and the connecting pipe 290 are fixedly connected to the sealing ring 280 through the connecting ring 270, a connecting column 350 is sleeved in the middle of the connecting pipe 290, a fixed shaft 190 is connected to the bottom of the connecting column 350, a card slot 180 is opened at the bottom of the fixed shaft 190, an output shaft 110 is snap-connected in the middle of the card slot 180, an installation groove 200 is opened on the side of the output shaft 110, a three-lip sealing ring 120 is snap-connected in the middle of the installation groove 200, and the three-lip sealing ring 120 includes a first contact block 1 5. The first contact block 15 contacts the side of the output shaft 110, a second contact block 14 is arranged below the first contact block 15, a third contact block 13 is connected below the second contact block 14, the second contact block 14 and the third contact block 13 are both in contact with the output shaft 110, a sealing groove 140 is provided on the side of the three-lip seal ring 120, an O-ring 130 is installed in the middle of the sealing groove 140, and the O-ring 130 contacts the sealing groove 140. By setting the three-lip seal ring 120 and the O-ring 130, when the device is installed and used, the sealing effect is increased while reducing the wear of the sealing lip. The sealing lip is directly installed in the sealing lip support 150 to reduce the risk of a gap between the sealing lip housing 320 and the support due to the original hard fit. The side of the three-lip seal ring 120 is snap-connected with the sealing lip support 150.
[0024] In this embodiment: the sealed gearbox, through the arrangement of the three-lip seal ring 120 and the O-type seal ring 130, adds an additional seal ring between the original two-lip seal rings, thereby increasing the sealing effect and reducing the wear of the seal lip. The seal lip is directly installed in the seal lip support 150 to reduce the risk of the original too hard fit to produce a gap between the seal lip housing 320 and the support. In addition, an O-type seal ring 130 is added to the outer side of the seal lip to further seal the seal lip support 150 and the seal lip housing 320. Through the arrangement of the first contact block 15, the second contact block 14 and the third contact block 13, the sealing performance of the device during operation is improved as much as possible during the installation and use of the device. Through the arrangement of the connecting pipe 290, the connecting ring 270 and the seal ring 280, the output shaft 110 and the fixed shaft 190 are protected as much as possible during the use of the device, thereby increasing the service life of the device as much as possible.
[0025] Embodiment 2: This embodiment is intended to promote the solution of the problem that in the prior art sealed gearbox, since the two-lip seal ring is wrapped with 316L stainless steel on the outside and installed in the seal lip seat by the interference fit principle, there will be an uncontrollable gap between the seal lip housing 320 and the seal lip seat, which increases the risk of communication between the inner cavity of the gearbox and the outside world. When there are only two seal lips between the output shaft 110 and the two-lip seal ring, they are easy to wear and the sealing effect is poor. The seal lip housing 320 and the seal lip support 150 are metal hard fits, which is purely a risk of gaps. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 4 The side of the sealing lip support 150 is connected to a connecting plate 330 , a limiting plate 340 is fixedly installed above the connecting plate 330 , a limiting groove 170 is provided above the limiting plate 340 , and the middle of the limiting groove 170 is engaged and connected to the limiting sealing block 160 .
[0026] A sealing lip housing 320 is installed on the side of the fixed shaft 190, and a connecting shell 210 is connected to the side of the sealing lip housing 320. A fixed shell 220 is installed on the side of the connecting shell 210. A clamping block 230 is fixedly connected to the side of the fixed shell 220. A conveying trough 310 is opened above the box body 240, and a conveying port 300 is installed above the conveying trough 310. When the objects need to be processed, the objects can be conveyed through the conveying port 300 to avoid the scattering of the objects as much as possible. The clamping block 230 and The reinforcing block 260 is snap-fitted and connected, the three-lip sealing ring 120, the O-ring 130 and the limiting sealing block 160 are all configured as rubber sealing rings or sealing blocks, the O-ring 130 is in full contact with the sealing groove 140, the sealing groove 140 is configured as a rectangular groove, the limiting groove 170, the mounting groove 200 and the card groove 180 are all configured as rectangular grooves, the conveying groove 310 is configured as a circular groove, and the sealing lip shell 320, the connecting shell 210 and the fixing shell 220 are all configured as plastic shells.
[0027] In the present embodiment: the sealed gearbox, through the provision of the conveying port 300, can minimize the scattering of articles when articles are placed in the box body 240; the provision of the connecting ring 270 and the sealing ring 280 can further enhance the sealing performance of the device after installation, and can avoid the generation of gaps at the connection as much as possible, which would affect the practical effect of the device during use; the provision of the stabilizing block 250 and the reinforcing block 260 can improve the stability of the device during use as much as possible, and can also greatly improve the service life of the device.
[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A sealed gearbox, comprising a housing (240), characterized in that: The box body (240) is plugged with a connecting pipe (290) on the side, the connecting pipe (290) is connected with a connecting ring (270) on the side, the connecting ring (270) is fixedly connected with a sealing ring (280) on the side, the end of the connecting pipe (290) is plugged with a reinforcing block (260), the reinforcing block (260) is fixedly installed with a stabilizing block (250), and the reinforcing block (260) and the connecting pipe (290) are fixedly connected with the sealing ring (280) via the connecting ring (270); A connecting column (350) is sleeved in the middle of the connecting tube (290), a fixed shaft (190) is connected to the bottom of the connecting column (350), a clamping groove (180) is provided at the bottom of the fixed shaft (190), an output shaft (110) is clamped and connected in the middle of the clamping groove (180), a mounting groove (200) is provided on the side of the output shaft (110), and a three-lip sealing ring (120) is clamped and connected in the middle of the mounting groove (200).
2. A sealed gearbox according to claim 1, characterized in that: The three-lip seal ring (120) comprises a first contact block (15), the first contact block (15) contacts the side of the output shaft (110), a second contact block (14) is arranged below the first contact block (15), a third contact block (13) is connected below the second contact block (14), and the second contact block (14) and the third contact block (13) are both in contact with the output shaft (110).
3. A sealed gearbox according to claim 1, characterized in that: A sealing groove (140) is provided on the side of the three-lip sealing ring (120), an O-type sealing ring (130) is installed in the middle of the sealing groove (140), the O-type sealing ring (130) is in contact with the sealing groove (140), and a sealing lip support (150) is snap-connected to the side of the three-lip sealing ring (120).
4. A sealed gearbox according to claim 3, characterized in that: The sealing lip support (150) is connected to a connecting plate (330) on its side, a limiting plate (340) is fixedly mounted above the connecting plate (330), a limiting groove (170) is provided above the limiting plate (340), and a middle portion of the limiting groove (170) is snap-fitted and connected to a limiting sealing block (160).
5. A sealed gearbox according to claim 1, characterized in that: A sealing lip housing (320) is installed on the side of the fixed shaft (190), a connecting shell (210) is connected to the side of the sealing lip housing (320), a fixed shell (220) is installed on the side of the connecting shell (210), and a clamping block (230) is fixedly connected to the side of the fixed shell (220).
6. A sealed gearbox according to claim 5, characterized in that: A conveying trough (310) is provided above the box body (240), a conveying port (300) is installed above the conveying trough (310), and the clamping block (230) is clamped and connected with the reinforcing block (260).
7. A sealed gearbox according to claim 4, characterized in that: The three-lip sealing ring (120), the O-type sealing ring (130) and the limiting sealing block (160) are all configured as sealing rings or sealing blocks made of rubber material. The O-type sealing ring (130) is in full contact with the sealing groove (140), and the sealing groove (140) is configured as a rectangular groove.
8. A sealed gearbox according to claim 6, characterized in that: The installation groove (200) is configured as a rectangular groove, the conveying groove (310) is configured as a circular groove, and the sealing lip housing (320), the connecting housing (210) and the fixing housing (220) are all configured as plastic housings.