Rotary sealing device for feeding machine

Abstract

The utility model relates to the technical field of mechanical equipment, and discloses a rotary sealing device for a feeding machine, which comprises a feeding machine bottom plate, a bearing seat arranged on the feeding machine bottom plate, a rotating shaft arranged on the bearing seat, a stirring paddle center seat sleeved on the bearing seat and the rotating shaft, and a sealing assembly, the sealing assembly comprises a framework oil seal installed at the bottom end of the bearing end cover and a dustproof sealing ring arranged between the rotating shaft and the stirring paddle center base. According to the utility model, the sealing assembly is arranged and comprises the framework oil seal at the end cover in the bearing seat and the dustproof sealing ring between the rotating shaft and the center seat of the stirring paddle, the rotating seal of two sealing points is selected by a common center and is divided into two layers of inner and outer staggered sealing protection, and the concentric precision of the two seals is designed; therefore, the service life of the two-layer seal is prolonged, and the manufacturability is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a rotary sealing device for a feeder. Background Art

[0002] In the raw material production line of the lithium battery industry, due to the relative rotation of the center axis and the disc feeder during operation, some powders with poor fluidity need to be broken and auxiliary feeding operations performed at the bottom of the disc. During the operation, if the seal is not proper, the powder will leak into the external environment, causing damage to the health of personnel.

[0003] The existing feeder sealing device contains customized air seals, oil seals and other sealing accessories, which have complex structures, high costs, difficult installation, poor maintainability and accessory security, affecting its production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a rotary sealing device for a feeder to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary sealing device for a feeder, comprising a feeder bottom plate, a bearing seat mounted on the feeder bottom plate, a rotating shaft arranged on the bearing seat, a stirring paddle center seat mounted on the bearing seat and the rotating shaft, and a sealing assembly, wherein a bearing end cover is arranged inside the bearing seat, and the sealing assembly comprises a skeleton oil seal mounted on the bottom end of the bearing end cover, and a dustproof sealing ring arranged between the rotating shaft and the stirring paddle center seat. By inserting the skeleton oil seal into the bearing end cover, and then fixing the bearing end cover on the bearing seat, this is a secondary seal, which is used to protect the inside of the bearing seat; the dustproof sealing ring is installed in the stirring paddle center seat, and then the whole is installed on the rotating shaft, which is a primary seal, which directly blocks the material in the container from entering the inside of the device.

[0006] The following improvement is made in the solution of the present application: the side of the dustproof sealing ring away from the rotating shaft is connected and fixed to the center seat of the stirring paddle.

[0007] The following improvements are made in the present application: a through hole corresponding to the rotating shaft is provided on the center seat of the stirring paddle, and a groove corresponding to the bearing seat is provided on the lower end surface of the center seat of the stirring paddle, a sealing groove is provided on the inner side wall of the groove, and a sealing gasket is installed in the sealing groove.

[0008] The following improvement is made in the present application: the upper end surface of the bearing seat is provided with a mounting groove, and the mounting groove matches the size of the bearing end cover.

[0009] The following improvement is made in the present application: an oil seal groove matching with the skeleton oil seal is provided at the bottom end of the bearing end cover located outside the rotating shaft.

[0010] The following improvement is made in the present application: a through hole corresponding to the bearing seat is opened in the middle of the upper surface of the feeder bottom plate, and the bearing seat is embedded in the feeder bottom plate through the through hole.

[0011] Compared with the prior art, the utility model provides a rotary sealing device for a feeder, which has the following beneficial effects:

[0012] The utility model sets a sealing component, including a skeleton oil seal at the inner end cover of the bearing seat and a dustproof sealing ring between the rotating shaft and the center seat of the stirring paddle. The rotating seals at the two sealing points are both optional for the common center and are divided into double layers of inner and outer staggered sealing protection. The concentricity accuracy of the two seals is designed, thereby increasing the service life of the two layers of seals and enhancing the processability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0014] Figure 1 It is a cross-sectional view of the utility model.

[0015] In the figure: 1. feeder bottom plate; 2. bearing seat; 21. bearing end cover; 3. rotating shaft; 4. stirring paddle center seat; 5. sealing group; 51. skeleton oil seal; 52. dustproof sealing ring. DETAILED DESCRIPTION

[0016] 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.

[0017] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] Example

[0019] like Figure 1 As shown, a rotary sealing device for a feeder is mainly composed of a feeder base plate 1, a bearing seat 2, a rotating shaft 3, a stirring paddle center seat 4 and a sealing assembly 5; wherein, the bearing seat 2 is fixedly mounted on the feeder base plate 1, and a bearing end cover 21 is provided inside the bearing seat 2, the rotating shaft 3 is installed in the bearing seat 2, the stirring paddle center seat 4 is sleeved on the bearing seat 2 and the rotating shaft 3, the sealing assembly 5 includes a skeleton oil seal 51 and a dustproof sealing ring 52, the skeleton oil seal 51 is installed in the bearing seat end cover 21, and then a dustproof sealing ring 52 is arranged between the rotating shaft 3 and the stirring paddle center seat 4, the rotary seals of the two sealing points are both optional with a common center, and are divided into double-layer internal and external offset sealing protection, and the concentricity accuracy of the two seals is designed to improve the service life of the two layers of seals.

[0020] A through hole corresponding to the bearing seat 2 is provided in the middle of the upper end surface of the feeder base plate 1, and the bearing seat 2 is embedded in the feeder base plate 1 through the through hole; a mounting groove is provided on the upper end surface of the bearing seat 2, and the mounting groove matches the size of the bearing end cover 21, and an oil seal groove matching the skeleton oil seal 51 is provided at the bottom end of the bearing end cover 21 located outside the rotating shaft 3; the side of the dustproof sealing ring 52 away from the rotating shaft 3 is connected and fixed to the stirring paddle center seat 4, and the stirring paddle center seat 4 is provided with a through hole corresponding to the rotating shaft 3, and the lower end surface of the stirring paddle center seat 4 is provided with a groove 41 corresponding to the bearing seat 2, and the inner side wall of the groove 41 is provided with a sealing groove 42, and a sealing gasket 43 is installed in the sealing groove 42.

[0021] Working principle: The bearing seat 2 is fixed on the feeder bottom plate 1, the rotating shaft 3 is installed in the bearing seat 2, the skeleton oil seal 51 is installed in the bearing end cover 21, and then the bearing end cover 21 is fixed on the bearing seat 1. This is the secondary seal, which is used to protect the inside of the bearing seat 2; the dustproof sealing ring 52 is installed in the center seat 4 of the stirring paddle, and then the whole is installed on the rotating shaft 3. This is the primary seal, which directly blocks the material in the container from entering the inside of the device.

Claims

1. A rotary sealing device for a feeder, characterized in that: The invention comprises a feeder bottom plate (1), a bearing seat (2) mounted on the feeder bottom plate (1), a rotating shaft (3) arranged on the bearing seat (2), a stirring paddle center seat (4) sleeved on the bearing seat (2) and the rotating shaft (3), and a sealing assembly (5), wherein a bearing end cover (21) is arranged inside the bearing seat (2), and the sealing assembly (5) comprises a skeleton oil seal (51) mounted on the bottom end of the bearing end cover (21), and a dustproof sealing ring (52) arranged between the rotating shaft (3) and the stirring paddle center seat (4).

2. A rotary sealing device for a feeder according to claim 1, characterized in that: The side of the dustproof sealing ring (52) away from the rotating shaft (3) is connected and fixed to the stirring paddle center seat (4).

3. A rotary sealing device for a feeder according to claim 2, characterized in that: The stirring paddle center seat (4) is provided with a through hole corresponding to the rotating shaft (3), and the lower end surface of the stirring paddle center seat (4) is provided with a groove (41) corresponding to the bearing seat (2), and the inner side wall of the groove (41) is provided with a sealing groove (42), and a sealing gasket (43) is installed in the sealing groove (42).

4. A rotary sealing device for a feeder according to claim 1, characterized in that: The upper end surface of the bearing seat (2) is provided with a mounting groove, and the mounting groove matches the size of the bearing end cover (21).

5. A rotary sealing device for a feeder according to claim 4, characterized in that: An oil seal groove matching with the skeleton oil seal (51) is formed at the bottom end of the bearing end cover (21) located outside the rotating shaft (3).

6. A rotary sealing device for a feeder according to claim 1, characterized in that: A through hole corresponding to the bearing seat (2) is provided in the middle of the upper end surface of the feeder bottom plate (1), and the bearing seat (2) is embedded in the feeder bottom plate (1) through the through hole.

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