Stirring shaft transmission structure of PET (Polyethylene Terephthalate) crystallizer
By using a coupling to connect a flat bearing and a deep groove ball bearing on the stirring shaft of the PET crystallizer, the problem of stirring shaft wear was solved, and the durability and smooth operation of the equipment were achieved.
Patent Information
- Application Number
- CN202422885213.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The existing PET crystallizers use deep groove ball bearings to bear gravity and load on the stirring shaft, which leads to wear or damage, affecting equipment life and increasing production costs.
A coupling is used to connect the plane bearing, and together with the first and second bearings, the three operate in conjunction under the limiting conditions of the first and second mounting sleeves, which reduces wear and enhances the durability of the equipment.
It improves the concentricity and smoothness of the stirring shaft, reduces equipment wear, enhances equipment durability, and prevents metal screws from loosening and affecting other equipment.
Smart Images
Figure CN223587056U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The embodiment of the utility model relates to but is not limited to the field of plastic processing equipment, and particularly relates to a stirring shaft transmission structure of a PET crystallization machine. BACKGROUND
[0002] The existing PET crystallization machine adopts a long stirring shaft, and a deep groove ball bearing matched with the rotation of the stirring shaft is arranged at the top or bottom of the stirring barrel to work, and the deep groove ball bearing and the bearing seat are usually used to bear the gravity of the machine itself and the stirring load, but the bearing seat is easily deformed during the operation of the machine due to long-time use, and the deep groove ball bearing is thus worn or damaged. SUMMARY
[0003] (I) Technical problem to be solved
[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a stirring shaft transmission structure of a PET crystallization machine, which solves the technical problem that the PET crystallization machine only bears the gravity of the stirring shaft and the stirring load through the deep groove ball bearing in the prior art, which leads to easy wear or damage over time, affects the service life of the equipment and increases the production cost.
[0005] (II) Technical scheme
[0006] The utility model discloses a stirring shaft transmission structure of a PET crystallization machine, which comprises a stirring shaft provided with a shaft coupling at the end, a first mounting sleeve and a second mounting sleeve, the first mounting sleeve is arranged at the side end of the second mounting sleeve, the stirring shaft is inserted through the first mounting sleeve and the second mounting sleeve, a plain bearing sleeved with the stirring shaft is arranged in the first mounting sleeve, the upper end surface of the plain bearing is in contact with the shaft coupling, the shaft coupling is sleeved with the end of the stirring shaft, the first bearing and the second bearing sleeved with the stirring shaft are arranged in the second mounting sleeve, and the first bearing and the second bearing are provided with elastic retaining rings on both sides.
[0007] Preferably, the stirring shaft comprises a transmission end, a limiting end, a fixed groove and a bearing mounting position, the transmission end is arranged on one side of the limiting end, the fixed groove is arranged on the other side of the limiting end, the bearing mounting position is arranged on the right side of the fixed groove, and mounting grooves are arranged on both sides of the bearing mounting position.
[0008] Preferably, the outer periphery of the first mounting sleeve is provided with a mounting hole, and the inside of the first mounting sleeve is provided with a mounting cavity.
[0009] Preferably, the inside of the second mounting sleeve is provided with a left chamber and a right chamber, and the left chamber and the right chamber are communicated.
[0010] Preferably, the right chamber is provided with an elastic retaining ring.
[0011] Preferably, the outer part of the second mounting sleeve is provided with a first screw hole group and a second screw hole group, and the second screw hole group is arranged outside the first screw hole group.
[0012] Preferably, the first bearing and the second bearing are deep groove ball bearings.
[0013] Preferably, the first mounting sleeve and the second mounting sleeve are fixed through mounting screws.
[0014] (Three) beneficial effects
[0015] The coupling is fixed on the upper end of the stirring shaft to connect the plane bearing, the plane bearing bears the gravity of the stirring shaft to a certain extent, then the plane bearing cooperates with the first bearing and the second bearing to jointly operate, and the cooperation of the three under the limiting condition of the first mounting sleeve and the second mounting sleeve can effectively guarantee the concentricity of the stirring shaft, the operation is more smooth and flexible, and the wear of the equipment during operation is effectively reduced, and the durability of the equipment is enhanced. BRIEF DESCRIPTION OF DRAWINGS
[0016] The drawings are used to provide a further understanding of the technical scheme of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the technical scheme of the utility model, and do not constitute a limitation on the technical scheme of the utility model.
[0017] Fig. 1 is the overall structure explosion view of the stirring shaft transmission structure of the PET crystallization machine;
[0018] Fig. 2 is the overall structure front view of the stirring shaft transmission structure of the PET crystallization machine;
[0019] Fig. 3 is the A-A sectional view of the stirring shaft transmission structure of the PET crystallization machine; Fig. 2
[0020] Mark explanation:
[0021] 1, stirring shaft;10, transmission end;12, limiting end;13, fixed groove;14, bearing mounting position;15, mounting groove;2, coupling;20, plane bearing;3, first mounting sleeve;30, mounting cavity;4, second mounting sleeve;40, left chamber;41, right chamber;5, first bearing;6, second bearing;7, shaft elastic retainer;8, hole elastic retainer;9, mounting screw. DETAILED DESCRIPTION
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0023] The following is in conjunction with the appendix Figs. 1 to 3 To further describe, this utility model discloses a stirring shaft drive structure for a PET crystallizer, including a stirring shaft 1 with a coupling 2 at one end, a first mounting sleeve 3, and a second mounting sleeve 4. The first mounting sleeve 3 is screwed to the side of the second mounting sleeve 4. The stirring shaft 1 is inserted into and passes through the interior of the first mounting sleeve 3 and the second mounting sleeve 4, and the coupling 2 is bolted to its end. The output end of the output motor is connected to the coupling 2 to drive the stirring shaft 1 to rotate. A plane bearing 20 is provided inside the first mounting sleeve 3 to sleeve the stirring shaft 1. The upper end face of the plane bearing 20 contacts the coupling 2. During installation, the coupling... The lower end face of the coupling 2 contacts the upper end face of the plane bearing 20 to bear the weight of the stirring shaft 1 to a certain extent through the plane bearing 20. Specifically, the coupling 2 is sleeved on the end of the stirring shaft 1 and bears the weight of the stirring shaft 1 itself to a certain extent through the plane bearing 20. The second mounting sleeve 4 is provided with a first bearing 5 and a second bearing 6 sleeved on the stirring shaft 1. The first bearing 5 and the second bearing 6 cooperate with the plane bearing 20 to support the stirring shaft 1. The first bearing 5 and the second bearing 6 are provided on both sides with shaft elastic retaining rings 7, and the shaft elastic retaining rings 7 made of Teflon material are used to limit the movement on both sides.
[0024] In a preferred embodiment, the stirring shaft 1 includes a transmission end 10, a limiting end 12, a fixing groove 13, and a bearing mounting position 14. The transmission end 10 is located on one side of the limiting end 12 and is used to connect to the output end of the output motor. The fixing groove 13 is located on the other side of the limiting end 12 and a coupling 2 is installed in the fixing groove 13. The bearing mounting position 14 is located on the right side of the fixing groove 13, and mounting grooves 15 are provided on both sides of the bearing mounting position 14 to limit the installation of the shaft elastic retaining ring 7.
[0025] In a preferred embodiment, the outer periphery of the first mounting sleeve 3 is provided with a mounting hole that penetrates the body of the first mounting sleeve 3 so that the mounting screw 9 can be connected to the screw hole on the second mounting sleeve 4. The interior of the first mounting sleeve 3 is provided with a mounting cavity 30, which is used to accommodate the plane bearing 20.
[0026] In a preferred embodiment, the second mounting sleeve 4 is provided with a left chamber 40 and a right chamber 41. The left chamber 40 contains a first bearing 5 and a second bearing 6. The left chamber 40 and the right chamber 41 are connected to allow the stirring shaft 1 to pass through and be accommodated when the equipment is installed. The right chamber 41 is provided with a perforated elastic retaining ring 8.
[0027] In the preferred embodiment, the outer portion of the second mounting sleeve 4 is provided with a first screw hole group and a second screw hole group, specifically, the first screw hole group and the second screw hole group are both more than two screw holes, and the second screw hole group is arranged outside the first screw hole group, wherein the first screw hole group is matched with the mounting hole to be used for fixing and mounting the first mounting sleeve 3 and the second mounting sleeve 4 through the mounting screw 9, and the second screw hole group is used for fixing and mounting the second mounting sleeve 4 on the crystallization machine through the mounting screw 9.
[0028] In the preferred embodiment, the first bearing 5 and the second bearing 6 are deep groove ball bearings.
[0029] In summary, the present scheme is to connect the plain bearing through the coupling fixed on the upper end of the stirring shaft, so that the plain bearing bears the gravity of the stirring shaft to a certain extent, then the plain bearing cooperates with the first bearing and the second bearing to jointly operate, and the three cooperate under the limiting condition of the first mounting sleeve and the second mounting sleeve, which can effectively ensure the concentricity of the stirring shaft, reduce the swing in the operation process, and make the operation more smooth and flexible, while effectively reducing the wear of the equipment in the operation process, enhancing the durability of the equipment, in addition, the outer periphery of the stirring shaft adopts a screw-free structure, which effectively prevents the metal screw from loosening and falling into the plastic, avoiding affecting or damaging other equipment.
[0030] Although the technical scheme according to the present application has been described with reference to a plurality of different embodiments, aspects and features, it is not intended to limit the scope of the present application, but modifications thereof are all included in the broad scope of the foregoing disclosure, drawings and claims.
Claims
1. A stirring shaft transmission structure of a PET crystallization machine, comprising a stirring shaft provided with a shaft coupling at an end, a first mounting sleeve and a second mounting sleeve, the first mounting sleeve being arranged at a side end of the second mounting sleeve, and the stirring shaft being inserted through the first mounting sleeve and the second mounting sleeve, characterized in that: The first mounting sleeve is internally provided with a plain bearing sleeved on the stirring shaft, the upper end surface of the plain bearing is in contact with a shaft coupling, the shaft coupling is sleeved on the end of the stirring shaft, the second mounting sleeve is internally provided with a first bearing and a second bearing sleeved on the stirring shaft, and the first bearing and the second bearing are both provided with elastic shaft retaining rings on both sides.
2. The stirring shaft transmission structure of the PET crystallization machine according to claim 1, characterized in that: The stirring shaft comprises a transmission end, a limiting end, a fixing groove and a bearing mounting position, the transmission end is arranged on one side of the limiting end, the fixing groove is arranged on the other side of the limiting end, the bearing mounting position is arranged on the right side of the fixing groove, and mounting grooves are arranged on both sides of the bearing mounting position.
3. The stirring shaft transmission structure of the PET crystallization machine according to claim 1, characterized in that: The first mounting sleeve is externally provided with a mounting hole, and the inside of the first mounting sleeve is provided with a mounting cavity.
4. The stirring shaft transmission structure of the PET crystallization machine according to claim 1, characterized in that: The second mounting sleeve is internally provided with a left cavity and a right cavity, and the left cavity and the right cavity are in communication.
5. The stirring shaft transmission structure of the PET crystallization machine according to claim 4, characterized in that: The right cavity is provided with an elastic retaining ring.
6. The stirring shaft transmission structure of the PET crystallization machine according to claim 1, characterized in that: The second mounting sleeve is externally provided with a first screw hole group and a second screw hole group, and the second screw hole group is arranged on the outside of the first screw hole group.
7. The stirring shaft transmission structure of the PET crystallization machine according to claim 1, characterized in that: The first bearing and the second bearing are deep groove ball bearings.
8. The stirring shaft transmission structure of the PET crystallization machine according to claim 1, characterized in that: The first mounting sleeve and the second mounting sleeve are fixed through mounting screws.