An O-ring opening device

Abstract

This utility model provides an O-ring opening device, including a support plate and an end gear. A small motor is installed at the lower end of the support plate, and a protective shell is fixed to the outside of the support plate. A metal fixing ring is embedded in the middle of the support plate, and a ball bearing is horizontally embedded inside the metal fixing ring. The end gear is located above the ball bearing. Plastic cylinders are longitudinally glued to the lower circumference of the end gear. Ferrite magnetic blocks are glued to the lower end of the plastic cylinders. Fixing plates are longitudinally fixed to the upper circumference of the support plate, and bearing seats are installed on the upper part of the fixing plates. This design solves the problems of the original lever-type O-ring opening device, which is laborious to operate and difficult to control the accuracy; the spring fatigue of the spring in the spring-type opening device is prone to insufficient opening force and has a complex structure; and the fixed-size opening device is only suitable for specific specifications of O-rings and has poor versatility. This utility model adopts a drive and gear meshing transmission structure to realize the opening of the O-ring.

Description

Technical Field

[0001] This utility model is an O-ring opening device, belonging to the field of mechanical seal technology. Background Technology

[0002] In the field of mechanical seals, the installation quality of O-rings directly affects the sealing performance. O-rings are widely used in mechanical seals. During their installation, an expansion device is needed to expand the inner diameter of the O-ring to fit into the workpiece. Existing O-ring expansion devices usually adopt lever-type expansion devices, spring-type expansion devices, or fixed-size expansion devices.

[0003] However, lever-type expansion devices expand O-rings by manually pushing the expansion arm with a lever, which is laborious and difficult to control in terms of precision. Spring-type expansion devices use springs to provide expansion force, but spring fatigue can easily lead to insufficient expansion force, and the structure is complex. Fixed-size expansion devices are only suitable for specific specifications of O-rings and have poor versatility. There is an urgent need for an O-ring expansion device to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an O-ring opening device to solve the problems mentioned in the background art. This utility model adopts a drive and gear meshing transmission structure to realize the opening of the O-ring.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an O-ring opening device, comprising a support plate and an end face gear, a small motor installed at the lower end of the support plate, a protective shell fixed to the outside of the support plate, a metal fixing ring embedded in the middle of the support plate, a ball bearing horizontally embedded inside the metal fixing ring, the end face gear being located above the ball bearing, plastic cylinders longitudinally adhered to the lower periphery of the end face gear, ferrite magnetic blocks adhered to the lower ends of multiple plastic cylinders, fixing plates longitudinally fixed to the upper periphery of the support plate, bearing seats installed at the upper ends of multiple fixing plates, threaded rods installed in multiple bearing seats, bevel gears installed at the other ends of multiple threaded rods, nuts sleeved on the outside of multiple threaded rods by threading, strip-shaped moving rods longitudinally fixed to the upper ends of multiple nuts, and arc-shaped opening plates bolted to the upper outer ends of multiple strip-shaped moving rods.

[0006] Furthermore, a motor mount is installed on the outside of the small motor, and the shaft end of the small motor passes through a ball bearing and is connected and fixed to an end face gear.

[0007] Furthermore, the upper end of the protective shell is provided with multiple strip-shaped grooves, and the multiple strip-shaped moving rods slide through the multiple strip-shaped grooves respectively.

[0008] Furthermore, the lower ends of each of the ferrite magnetic blocks are magnetically attracted to the metal fixing ring via magnets.

[0009] Furthermore, the multiple bevel gears engage with the upper circumference of the end face gear through the gear meshing principle.

[0010] Furthermore, rubber ring grooves are provided on the outer surface of each of the multiple arc-shaped support pieces.

[0011] The beneficial effects of this utility model are as follows: This utility model provides an O-ring opening device. Because it incorporates a small motor, a metal retaining ring, a ball bearing, an end-face gear, a bearing seat, a threaded rod, a bevel gear, a nut, a strip-shaped moving rod, an arc-shaped opening plate, a plastic cylinder, and a ferrite magnetic block, its structure is reasonable. It employs a drive and gear meshing transmission structure to open the O-ring. Furthermore, the magnetic damping structure provides magnetic anti-loosening treatment for the end-face gear after it stops, effectively preventing the opening components from loosening on their own. It is simple to operate, highly versatile, and practical. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of an O-ring opening device according to the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of an O-ring opening device according to the present invention;

[0015] Figure 3 This is an enlarged schematic diagram of the bevel gear connection structure of an O-ring opening device according to this utility model;

[0016] Figure 4 This is a schematic diagram of the ferrite magnetic block position structure of an O-ring opening device according to this utility model.

[0017] In the diagram: 1-Motor base, 2-Small motor, 3-Support plate, 4-Metal retaining ring, 5-Ball bearing, 6-End face gear, 7-Fixing plate, 8-Protective shell, 9-Strip groove, 10-Bearing seat, 11-Threaded rod, 12-Bevel gear, 13-Nut, 14-Strip moving rod, 15-Arc-shaped spreading plate, 16-Rubber ring groove, 17-Plastic cylinder, 18-Ferrite magnetic block. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figures 1-4 This utility model provides a technical solution: an O-ring opening device, including a support disk 3 and an end gear 6. A small motor 2 is installed at the lower end of the support disk 3. A protective shell 8 is fixed to the outside of the support disk 3. A metal fixing ring 4 is embedded in the middle of the support disk 3. A ball bearing 5 is horizontally embedded inside the metal fixing ring 4. The end gear 6 is located above the ball bearing 5. Plastic cylinders 17 are longitudinally glued to the lower circumference of the end gear 6. Ferrite magnetic blocks 18 are glued to the lower end of the multiple plastic cylinders 17. Fixing plates 7 are longitudinally fixed to the upper circumference of the support disk 3. Bearing seats 10 are installed on the upper end of the multiple fixing plates 7. Multiple bearing housings 10 are each equipped with a threaded rod 11, and a bevel gear 12 is installed at the other end of each threaded rod 11. Nuts 13 are fitted onto the outside of the multiple threaded rods 11 through the threaded principle. A strip-shaped moving rod 14 is longitudinally fixed to the upper end of each of the multiple nuts 13. An arc-shaped spreading plate 15 is bolted to the upper outer side of each of the multiple strip-shaped moving rods 14. This design solves the problems of the original O-ring spreading device using a lever-type spreading device, which is laborious to operate and difficult to control the accuracy; the spring-type spreading device is prone to insufficient spreading force due to spring fatigue; and the structure is complex. The fixed-size spreading device is only suitable for specific O-ring specifications and has poor versatility.

[0020] In the first embodiment of this utility model: a motor base 1 is installed on the outside of the small motor 2. The shaft end of the small motor 2 passes through a ball bearing 5 and is connected and fixed to the end gear 6. By adding the connection between the shaft end of the small motor 2 and the end gear 6 through the ball bearing 5, the small motor 2 can drive the end gear 6 to rotate in place when it is powered on. The upper end of the protective shell 8 is provided with multiple strip grooves 9. Multiple strip moving rods 14 slide through the multiple strip grooves 9 respectively. By adding the multiple strip moving rods 14, the multiple strip moving rods 14 will not swing or be limited. The lower ends of multiple ferrite magnetic blocks 18 are magnetically attracted to the metal fixing ring 4. By adding the multiple ferrite magnetic blocks 18, the lower ends of the multiple ferrite magnetic blocks 18 are magnetically attracted to the metal fixing ring 4. When the end gear 6 is not rotating, it is locked to prevent the end gear 6 from driving the multiple bevel gears 12 to rotate on its own. Multiple bevel gears 12 mesh with the upper periphery of the end face gear 6 via gear meshing principles. When the end face gear 6 rotates, it drives the multiple bevel gears 12 to rotate synchronously. Each of the multiple arc-shaped expansion pieces 15 has rubber ring grooves 16 on its outer surface, facilitating the horizontal placement of the O-ring before it is opened.

[0021] As a second embodiment of this utility model: the O-ring is horizontally inserted into the outside of multiple arc-shaped expansion pieces 15 and into multiple rubber ring slots 16. When the small motor 2 is powered on, the shaft end of the small motor 2 drives the end face gear 6 to rotate in place (during this process, multiple plastic cylinders 17 and multiple ferrite magnetic blocks 18 rotate along with it). At this time, it will drive multiple bevel gears 12 to rotate synchronously through the gear meshing principle. When the multiple bevel gears 12 rotate, multiple threaded rods 11 can be adjusted to rotate in place within multiple bearing seats 10. At this time, multiple nuts 13 will drive multiple strip moving rods 14 to move in opposite directions at multiple strip grooves 9 through the thread principle, thereby adjusting multiple arc-shaped expansion pieces 15 to move in all directions, thereby opening the O-ring. When the end face gear 6 stops rotating, the lower ends of multiple ferrite magnetic blocks 18 are magnetically attracted to the metal fixing ring 4, locking it and preventing the end face gear 6 from driving the multiple bevel gears 12 to rotate on its own.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An O-ring opening device, comprising a support disc (3) and an end face gear (6), characterized in that: A small motor (2) is installed at the lower end of the support plate (3). A protective shell (8) is fixed to the outside of the support plate (3). A metal fixing ring (4) is embedded in the middle of the support plate (3). A ball bearing (5) is horizontally embedded inside the metal fixing ring (4). The end gear (6) is located above the ball bearing (5). Plastic cylinders (17) are longitudinally glued around the lower end of the end gear (6). Ferrite magnetic blocks (18) are glued to the lower end of the multiple plastic cylinders (17). The upper end of the support plate (3) has four A fixing plate (7) is fixed longitudinally around the perimeter. A bearing seat (10) is installed on the upper end of each fixing plate (7). A threaded rod (11) is installed inside each bearing seat (10). A bevel gear (12) is installed at the other end of each threaded rod (11). Nuts (13) are fitted on the outside of each threaded rod (11) by means of threads. A strip-shaped moving rod (14) is fixed longitudinally on the upper end of each nut (13). An arc-shaped spreading plate (15) is installed on the upper outer side of each strip-shaped moving rod (14) by bolts.

2. The O-ring spreading device according to claim 1, characterized in that: The small motor (2) is externally mounted with a motor base (1), and the shaft end of the small motor (2) passes through a ball bearing (5) and is connected and fixed to the end face gear (6).

3. The O-ring spreading device according to claim 1, characterized in that: The protective shell (8) has multiple strip grooves (9) on its upper end, and multiple strip moving rods (14) slide through the multiple strip grooves (9) respectively.

4. The O-ring spreading device according to claim 1, characterized in that: The lower ends of the multiple ferrite magnetic blocks (18) are magnetically attracted to the metal fixing ring (4) by magnets.

5. The O-ring spreading device according to claim 1, characterized in that: Multiple bevel gears (12) mesh with the upper circumference of the end face gear (6) respectively through the gear meshing principle.

6. The O-ring spreading device according to claim 1, characterized in that: Rubber ring grooves (16) are provided on the outer surface of each of the multiple arc-shaped expansion pieces (15).

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