Blade assembly for constant-speed stirrer
By employing PTFE seals and high-speed bearings in the blade assembly of the constant-speed mixer, combined with a centering structure, the problems of cement slurry leakage and eccentric wear are solved, achieving higher sealing performance and durability, and extending service life.
Patent Information
- Application Number
- CN202520123409.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The blade assembly of the existing constant speed mixer experiences temperature rise during continuous use, leading to aging of the rubber O-ring, cement slurry leakage, insufficient wear resistance of the copper bearing, eccentric wear, and short service life.
It adopts a PTFE seal and high-speed bearing design, combined with a centering structure, including a centering retainer ring and snap ring for positioning. Centering is achieved through high-speed bearing, and the seal is isolated from the bearing to form a sealed state, preventing eccentric wear.
It improves sealing performance, reduces the risk of cement slurry leakage, extends service life, reduces usage costs and experimental risks, and enhances durability.
Smart Images
Figure CN223904214U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of stirrer, specifically relates to a blade assembly for constant speed stirrer. BACKGROUND
[0002] The design purpose of the blade assembly for constant speed stirrer is to stir cement slurry when the motor rotates, and the function is to ensure that the cement slurry does not leak when the motor rotates at high speed, and to ensure that the stirring speed is consistent with the motor. The blade assembly designed in the past has the following technical problems:
[0003] When continuously used, the temperature rises rapidly, the aging rate of ordinary rubber O-shaped ring is accelerated, and the cement slurry leaks; the copper bearing in the existing structure is not wear-resistant, and the copper sleeve can only be replaced with the blade assembly after wear; there is no centering design, which leads to eccentricity, and the cement slurry leaks after a certain degree of wear; the ordinary rubber O-shaped ring is deformed and does not rebound, which leads to cement slurry leakage;
[0004] In view of the above factors, a blade assembly for constant speed stirrer is provided, which reduces the risk of cement slurry leakage, thereby increasing the service life, improving the sealing performance of the transmission shaft during high-speed rotation, ensuring no eccentricity, greatly improving the durability, reducing the use cost and experimental risk. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a blade assembly for constant speed stirrer to solve the problems in the background art.
[0006] The utility model aims at providing a blade assembly for constant speed stirrer to solve the problems in the background art.
[0007] The transmission shaft is further provided with a centering structure, a sealing ring is arranged on the transmission shaft, and the sealing ring and the centering structure are isolated by a gasket;
[0008] The shaft cover is connected with the stirring blade in a fixed or detachable manner, and the locking nut is press-connected on the stirring blade.
[0009] Further, the sealing ring is a fluorine sealing ring, and the thickness of the sealing ring is 3-6mm.
[0010] Further, the centering structure comprises a bearing and a righting baffle, the bearing is sleeved on the transmission shaft, the bearing is provided with a righting baffle above, and the righting baffle is positioned by the snap spring and fixed on the sealing ring.
[0011] Further, the righting retaining ring is in a convex shape, and the upper end plane of the righting retaining ring is in contact with the shaft cover, and the snap spring is arranged at the edge of the righting retaining ring.
[0012] Further, the support seat is provided with a mounting groove for accommodating the snap spring.
[0013] Further, the bearing is a high-speed bearing, and a high-speed temperature-resistant bearing design is adopted, and the lower part of the high-speed bearing is isolated by a spacer sleeve, so that the high-speed bearing is in contact with the upper end surface of the boss of the transmission shaft.
[0014] Further, the sealing ring arranged on the transmission shaft is in a clearance fit, and the high-speed bearing is centered, so that the transmission shaft and the sealing ring form a sealed state.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The utility model adopts the rotary shaft seal as the sealing device, greatly improves the temperature resistance, reduces the aging rate, improves the continuous high-speed use time, adopts the high-strength high-speed bearing, and greatly improves the wear resistance;
[0017] The utility model sets up the centering structure, and the bearing and the righting retaining ring are used as the centering device, the eccentric wear condition is prevented, and compared with the ordinary rubber O-shaped ring, the rotary four fluorine sealing ring is used as the rotary special sealing device, and the wear resistance is far greater than that of the ordinary O-shaped rubber ring.
[0018] The utility model avoids the situation that the previous structure is not durable in structure and device selection, reduces the cement slurry leakage risk, and thereby increases the service life.
[0019] The utility model is applied to the stirring transmission mechanism of the constant-speed stirrer in the oil well cement experiment requirement, and can realize long-term stirring test of 1000-18000rpm. The novel structure, the rotary four fluorine sealing ring is a key sealing piece, the high-speed bearing is used as the centering device, the sealing performance of the transmission shaft is improved in the high-speed rotation process, eccentricity is ensured, the durability is greatly improved, and the use cost and the experiment risk are reduced. BRIEF DESCRIPTION OF DRAWINGS
[0020] Fig. 1 It is the overall schematic diagram of the utility model;
[0021] Fig. 2 It is the enlarged schematic diagram of the utility model with the righting retaining ring;
[0022] Fig. 3 It is the partial enlarged schematic diagram of the utility model with the spacer sleeve. DETAILED DESCRIPTION
[0023] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments, all other embodiments obtained by the ordinary skilled in the art without creative labor based on the embodiments in the utility model belong to the scope of the utility model protection.
[0024] In the description of the utility model, it is necessary to explain that, unless there is explicit provision and limitation, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, it can be directly connected, also can be indirectly connected through intermediate medium.
[0025] In the description of the utility model, it is necessary to understand that, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.
[0026] As Figs. 1-3 A kind of blade assembly for constant speed stirrer, including support seat 1 and with the support seat 1 with detachable way connection shaft cover 6, transmission shaft 5 is arranged in the support seat 1, and transmission shaft 5 is extended from the shaft cover 6 end face by support seat 1 upwards and is fixed by lock nut 11;
[0027] Sealing ring 4 is arranged on the transmission shaft 5, and gasket 3 is used to isolate between sealing ring 4 and the centering structure;
[0028] Shaft cover 6 is connected with stirring blade 10 in fixed or detachable way, lock nut 11 is pressed on the stirring blade 10.
[0029] Sealing ring 4 adopts fluorine sealing ring, and the thickness of sealing ring 4 is 3-6mm.
[0030] In order to prevent eccentricity, wear and cement slurry leakage in use state, the centering structure includes bearing 2 and righting retaining ring 8, bearing 2 is sleeved on transmission shaft 5, righting retaining ring 8 is arranged above bearing 2, and the righting retaining ring 8 is positioned by snap spring 7 and is fixed on sealing ring 4.
[0031] In order to facilitate positioning by the snap spring in the use state, the righting retaining ring 8 is in the shape of a convex character, and the upper end plane of the righting retaining ring 8 is in contact with the shaft cover 6, the snap spring 7 is arranged at the edge of the righting retaining ring 8, and the support base 1 is provided with a mounting groove for accommodating the snap spring 7.
[0032] The snap spring 7 is arranged on the support base 1 outside the bearing 2.
[0033] In order to facilitate improving wear resistance in the use state, the bearing 2 is a high-speed bearing, and a high-speed temperature-resistant bearing design is adopted, and the lower part of the high-speed bearing is isolated by a spacer 9, so that the high-speed bearing is in contact with the upper end face of the boss of the transmission shaft 5.
[0034] The sealing ring 4 arranged on the transmission shaft 5 is in a clearance fit, and the transmission shaft 5 and the sealing ring 4 are in a sealed state through centering of the high-speed bearing.
[0035] The bearing adopts a high-speed temperature-resistant bearing design, is not easy to deform, and has high strength. The lower part of the high-speed bearing ring is isolated by a spacer 9, so that the high-speed bearing 2 is in contact with the upper end face of the boss of the transmission shaft 5, the friction force is reduced, the sealing surface wear is greatly reduced, and the centering effect is achieved.
[0036] The rotating tetrafluoro sealing ring 4 is isolated from the high-speed bearing 2 by a gasket 3, so as to prevent the high-speed bearing 2 from wearing the rotating tetrafluoro sealing ring 4 when rotating.
[0037] The righting retaining ring 8 is positioned and fixed on the rotating tetrafluoro sealing ring 4 by the snap spring 7, so as to prevent the rotating tetrafluoro sealing ring 4 from moving up and down, and the centering effect of the transmission shaft 5 is achieved.
[0038] Through centering of the high-speed bearing, the transmission shaft and the rotating tetrafluoro sealing ring form a seal, so as to achieve the effect of overall sealing.
[0039] The utility model discloses a rotating shaft seal is used as sealing device, temperature-resistant performance greatly improves, reduces the aging rate, improves continuous high -speed use time, adopts high -strength high -speed bearing, greatly improves wear resistance.
[0040] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0041] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.
Claims
1. A blade assembly for a constant speed mixer, characterized by: The utility model provides a support seat (1) and axle cover (6) with the detachable connection of support seat (1), support seat (1) is provided with transmission shaft (5), and transmission shaft (5) is extended from the end surface of axle cover (6) by support seat (1) upwards and is fixed by lock nut (11); The transmission shaft (5) is further provided with a centering structure, the transmission shaft (5) is provided with a sealing ring (4), and the sealing ring (4) is isolated from the centering structure by a gasket (3); The axle cover (6) is fixedly or detachably connected with the stirring blade (10), and the lock nut (11) is pressed on the stirring blade (10).
2. The impeller blade assembly for a constant speed mixer as claimed in claim 1, wherein: The sealing ring (4) is a fluorine sealing ring, and the thickness of the sealing ring (4) is 3-6mm.
3. The impeller blade assembly for a constant velocity mixer as claimed in claim 2, wherein: The centering structure comprises a bearing (2) and a righting retaining ring (8), the bearing (2) is sleeved on the transmission shaft (5), the bearing (2) is provided with the righting retaining ring (8) above, the righting retaining ring (8) is positioned by a snap spring (7) and is fixed on the sealing ring (4).
4. The impeller blade assembly for a constant velocity mixer as claimed in claim 3, wherein: The righting retaining ring (8) is in the shape of a convex letter, the upper end plane of the righting retaining ring (8) is in contact with the axle cover (6), and the snap spring (7) is arranged at the edge of the righting retaining ring (8).
5. The impeller blade assembly for a constant velocity mixer as claimed in claim 4, wherein: The support seat (1) is provided with a mounting groove for accommodating the snap spring (7).
6. The impeller blade assembly for a constant velocity mixer as claimed in claim 5, wherein: The bearing (2) is a high-speed bearing, which is designed by using a high-speed temperature-resistant bearing, the lower part of the high-speed bearing is isolated by a spacer sleeve (9), so that the high-speed bearing is in contact with the upper end surface of the boss of the transmission shaft (5).
7. The impeller blade assembly for a constant velocity mixer as claimed in claim 6, wherein: The sealing ring (4) arranged on the transmission shaft (5) is in clearance fit, and the transmission shaft (5) and the sealing ring (4) form a sealed state by centering of the high-speed bearing.