Rotor sealing structure for rasping machine

Abstract

The utility model relates to the technical field of rasping machines, and discloses a rotor sealing structure for a rasping machine, the rotor sealing structure comprises a rotating shaft rotatably mounted in the rasping machine, a rotor main body sleeving the rotating shaft and two annular end plates, the two annular end plates are detachably mounted and fixed on the two sides of the rotor main body respectively, and the two sides of the rotor main body are both provided with assembling grooves; the sides, close to each other, of the two annular end plates are slidably mounted in the corresponding assembling grooves correspondingly, and key pins are detachably mounted and fixed to the top and the bottom of the rotating shaft correspondingly. The rotor has the following advantages and effects that under the combined action of the two radial sealing rings and the two axial sealing rings, an all-directional sealing system can be formed, the sealing performance of the connecting position of the key pin and the key groove can be effectively enhanced, the interior and the exterior of the rotor are completely isolated, the situation that water and dust enter the rotor is completely eradicated, and the service life of the rotor is prolonged. And reliable and stable operation of the rotor is realized.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of filing machines, in particular to a rotor sealing structure for a filing machine. BACKGROUND

[0002] A rotor of a filing machine is usually composed of an end plate, a shaft and a rotor, and in the prior art, the end plate, the shaft and the rotor are assembled by heating and expanding the rotor. When the rotor of the filing machine is running, the rotating speed is about 2100 r / min, and the key on the shaft is an important part for connecting the three parts. However, since there is always a gap between the key and the key groove, during the operation of the rotor, water, dust and other impurities may enter the inside of the rotor from the gap between the key and the key groove, which may easily cause the rotor to run unbalanced, damage the bearing, and even cause the shaft to break, the end plate to come off and other phenomena, and serious accidents may occur.

[0003] Therefore, the application provides a rotor sealing structure for a filing machine to solve the above problems. CONTENT OF THE INVENTION

[0004] The application aims to provide a rotor sealing structure for a filing machine, which can effectively enhance the sealing performance of the connection between the key pin and the key groove, form a comprehensive sealing system, keep the inside and outside of the rotor completely isolated, and prevent water and dust from entering the inside of the rotor.

[0005] The above technical purpose of the application is achieved by the following technical scheme: a rotor sealing structure for a filing machine, comprising a rotating shaft installed in the filing machine, a rotor main body and two annular end plates sleeved on the rotating shaft, the two annular end plates are detachably installed and fixed on the two sides of the rotor main body, assembly grooves are formed on the two sides of the rotor main body, the sides of the two annular end plates close to each other are slidably installed in the corresponding assembly grooves, key pins are detachably installed and fixed on the top and bottom of the rotating shaft, key grooves are formed on the inner walls of the top and bottom of the rotor main body, the two sides of the key grooves are connected with the corresponding assembly grooves, the sides of the two key pins away from each other are inserted and fixed in the corresponding key grooves, and sealing assemblies are arranged on the two annular end plates, the sealing assemblies comprise axial sealing rings and radial sealing rings, the axial sealing rings are fixedly installed on the inner ring walls of the annular end plates, the inner rings of the axial sealing rings are in sliding sealing contact with the rotating shaft, the radial sealing rings are fixedly installed on the side walls of the annular end plates close to the rotor main body, and the radial sealing rings are in abutment with the inner walls of the assembly grooves.

[0006] By adopting the technical scheme, the axial sealing ring is used for sealing the axial gap between the annular end plate and the rotating shaft, and the radial sealing ring is used for sealing the radial gap between the annular end plate and the rotating shaft, so that the sealing performance of the connection between the key pin and the key groove is effectively enhanced, the inside and the outside of the rotor are completely isolated, and the water and dust entering the inside of the rotor are avoided.

[0007] Further, the number of the axial sealing rings is two, and the diameters of the two axial sealing rings are the same.

[0008] By adopting the technical scheme, the sealing effect of the axial gap between the annular end plate and the rotating shaft is further enhanced.

[0009] Further, the number of the radial sealing rings is two, and the diameters of the two radial sealing rings are different.

[0010] By adopting the technical scheme, the sealing effect of the radial gap between the annular end plate and the rotating shaft is further enhanced.

[0011] Further, the bottom and the top of the rotating shaft are provided with mounting grooves, and the two key pins are respectively inserted and fixed in the corresponding mounting grooves.

[0012] By adopting the technical scheme, the assembly of the key pin and the rotating shaft is facilitated.

[0013] Further, the outer ring wall of the annular end plate and the inner ring wall of the assembly groove are smooth surfaces.

[0014] By adopting the technical scheme, it can be ensured that the annular end plate is smoothly inserted and assembled in the assembly groove.

[0015] Further, the annular end plate is provided with a plurality of internally hexagonal bolts which are equally spaced and annularly distributed, the inner wall of one side of the assembly groove is provided with a plurality of thread grooves which are equally spaced and annularly distributed, and one end of the plurality of internally hexagonal bolts is respectively threadedly mounted in the corresponding thread groove.

[0016] By adopting the technical scheme, the plurality of internally hexagonal bolts can reliably mount and fix the annular end plate on one side of the rotor body.

[0017] Further, one side of the annular end plate is provided with a plurality of bolt grooves which are equally spaced and annularly distributed, and the plurality of internally hexagonal bolts are respectively threadedly mounted in the corresponding bolt grooves.

[0018] By adopting the technical scheme, the design of the bolt groove can effectively solve the phenomenon of the exposure of the internally hexagonal bolt.

[0019] The further arrangement of the application is that the two ring-shaped end plates are fixedly installed with positioning pins on the side close to each other, positioning grooves are formed on the inner wall of one side of the two assembly grooves, and the two positioning pins are respectively slidably installed in the corresponding positioning grooves.

[0020] By adopting the above technical scheme, the installation position of the ring-shaped end plate can be preliminarily positioned by the sliding plug-in cooperation of the positioning pin and the positioning groove.

[0021] The further arrangement of the application is that the length dimension of the key pin is greater than the length dimension of the key groove, and the two ends of the key pin respectively abut against the corresponding ring-shaped end plate.

[0022] By adopting the above technical scheme, the stability of the rotor main body installed on the rotating shaft is ensured, and the rotor main body will not be displaced during operation.

[0023] The application has at least one of the following beneficial technical effects:

[0024] The application can form a full-range sealing system under the joint action of the two radial sealing rings and the two axial sealing rings, can effectively enhance the sealing performance of the connection between the key pin and the key groove, keep the inside and outside of the rotor completely isolated, eliminate the water and dust into the rotor, and realize reliable and stable operation of the rotor. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a front perspective structural schematic diagram of the embodiment.

[0026] Figure 2 is a front perspective sectional structural schematic diagram of the embodiment.

[0027] Figure 3 is Figure 2 is an enlarged structural schematic diagram of part A in the figure.

[0028] Figure 4 is a structural schematic diagram of the rotating shaft.

[0029] Figure 5 is a structural schematic diagram of the rotor main body.

[0030] Figure 6 is a structural schematic diagram of the ring-shaped end plate from a first perspective.

[0031] Figure 7 is a structural schematic diagram of the ring-shaped end plate from a second perspective.

[0032] In the figure, 1 is a rotating shaft, 2 is a rotor main body, 3 is a ring-shaped end plate, 4 is an assembly groove, 5 is a key pin, 6 is a key groove, 7 is an axial sealing ring, 8 is a radial sealing ring, 9 is a bolt groove, 10 is an internal hexagonal bolt, 11 is a threaded groove, 12 is a positioning pin, and 13 is a positioning groove. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be clearly and completely described below in combination with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] Referring to Figures 1-7 The present application provides a rotor sealing structure for a grinding machine, which comprises a rotating shaft 1 rotatably installed in the grinding machine, a rotor body 2 and two annular end plates 3 sleeved on the rotating shaft 1, the two annular end plates 3 are respectively detachably installed and fixed on both sides of the rotor body 2, assembly grooves 4 are formed on both sides of the rotor body 2, the side of the two annular end plates 3 close to each other is respectively slidably installed in the corresponding assembly groove 4, key pins 5 are detachably installed and fixed on the top and bottom of the rotating shaft 1, key grooves 6 are formed on the inner walls of the top and bottom of the rotor body 2, the two sides of the key grooves 6 are respectively communicated with the corresponding assembly grooves 4, and the side of the two key pins 5 away from each other is respectively inserted and fixed in the corresponding key groove 6.

[0035] In the embodiment, in order to ensure the stability of the rotor body 2 installed on the rotating shaft 1 and prevent displacement during operation, the length of the key pin 5 is greater than the length of the key groove 6, and the two ends of the key pin 5 abut against the corresponding annular end plate 3.

[0036] In the embodiment, the two annular end plates 3 are provided with sealing assemblies, the sealing assemblies comprise axial sealing rings 7 and radial sealing rings 8, the axial sealing rings 7 are fixedly installed on the inner ring walls of the annular end plates 3, the inner ring of the axial sealing ring 7 is in sliding sealing contact with the rotating shaft 1, the radial sealing rings 8 are fixedly installed on the side walls of the annular end plates 3 close to the rotor body 2, the radial sealing rings 8 abut against the inner walls of one side of the assembly grooves 4, the number of the axial sealing rings 7 is two, the diameters of the two axial sealing rings 7 are the same, the number of the radial sealing rings 8 is two, the diameters of the two radial sealing rings 8 are different, and the sealing property of the connection between the key pin 5 and the key groove 6 is effectively enhanced through the combined action of the two axial sealing rings 7 and the two radial sealing rings 8, the inside and outside of the rotor are completely isolated, the water entering the inside of the rotor is prevented, and the reliable and stable operation of the rotor is realized.

[0037] In the embodiment, in order to facilitate the assembly of the key pin 5 and the rotating shaft 1, installation grooves are formed on the top and bottom of the rotating shaft 1, the side of the two key pins 5 close to each other is respectively inserted and fixed in the corresponding installation groove, and the outer ring walls of the annular end plates 3 and the inner ring walls of the assembly grooves 4 are both smooth surface structures, so that the annular end plates 3 are smoothly inserted and installed in the assembly grooves 4.

[0038] In the embodiment, in order to realize convenient disassembly and assembly of the annular end plate 3, a plurality of hexagonal bolts 10 are arranged on the annular end plate 3 in an equidistant annular distribution, a plurality of threaded grooves 11 are formed on the inner wall of one side of the assembly groove 4 in an equidistant annular distribution, one end of each of the plurality of hexagonal bolts 10 is threadedly installed in a corresponding threaded groove 11, a plurality of bolt grooves 9 are formed on one side of the annular end plate 3 in an equidistant annular distribution, and each of the plurality of hexagonal bolts 10 is threadedly installed in a corresponding bolt groove 9.

[0039] In the embodiment, the positioning pin 12 is fixedly installed on one side of each of the two annular end plates 3, and the positioning groove 13 is formed on the inner wall of one side of each of the two assembly grooves 4. The positioning pin 12 is slidably installed in the corresponding positioning groove 13. The positioning pin 12 and the positioning groove 13 can preliminarily position the installation position of the annular end plate 3, so that the plurality of bolt grooves 9 and the plurality of threaded grooves 11 are aligned one by one, and the annular end plate 3 is conveniently and quickly installed and fixed on one side of the rotor body 2.

[0040] Through the above structure, the use principle of the rotor sealing structure for the grinding machine is as follows:

[0041] When assembling the rotating shaft 1, the rotor body 2 and the two annular end plates 3, first, the two key grooves 6 on the rotor body 2 are aligned with the corresponding key pins 5, then the rotor body 2 is sleeved on the rotating shaft 1, then the positioning pins 12 on the two annular end plates 3 are aligned with the corresponding positioning grooves 13, then the two annular end plates 3 are sleeved on the rotating shaft 1 and inserted into the corresponding assembly grooves 4, at this time, the plurality of bolt grooves 9 are aligned with the corresponding threaded grooves 11 one by one, and then the plurality of hexagonal bolts 10 are used to stably and firmly install and fix the two annular end plates 3 on both sides of the rotor body 2, that is, the convenient and efficient assembly operation of the rotating shaft 1, the rotor body 2 and the two annular end plates 3 is realized.

[0042] During the operation of the rotating shaft 1, the rotor body 2 and the two annular end plates 3, the two axial sealing rings 7 mounted on the inner ring wall of the annular end plate 3 are in close sliding contact with the surface of the rotating shaft 1, forming an annular sealing surface. During the high-speed rotation of the rotor in the angle grinder, the axial sealing rings 7 prevent impurities such as liquid and dust from entering the interior of the rotor in the axial direction of the rotating shaft 1, avoiding the axial gap between the rotating shaft 1 and the annular end plate 3 from becoming a leakage channel. The two radial sealing rings 8 with different diameters on the side wall of the annular end plate 3 close to the rotor body 2 are in close contact with the inner wall of the assembly groove 4, filling the radial gap between the annular end plate 3 and the rotor body 2. During the high-speed rotation of the rotor in the angle grinder, the radial sealing rings 8 effectively prevent impurities such as liquid and dust from invading from the side. Furthermore, under the joint action of the two radial sealing rings 8 and the two axial sealing rings 7, a comprehensive sealing system is formed, which can effectively enhance the sealing performance of the connection between the key pin 5 and the key groove 6, maintain the complete isolation between the interior and exterior of the rotor, and completely eliminate the possibility of water and dust entering the interior of the rotor.

Claims

1. A rotor seal structure for a filing machine, characterized by, The assembly includes a rotating shaft (1) rotatably mounted inside a filing machine, a rotor body (2) sleeved on the rotating shaft (1), and two annular end plates (3). The two annular end plates (3) are detachably mounted and fixed on both sides of the rotor body (2). Assembly grooves (4) are provided on both sides of the rotor body (2). The two annular end plates (3) are slidably mounted in the corresponding assembly grooves (4) on their respective sides. Key pins (5) are detachably mounted and fixed on the top and bottom of the rotating shaft (1). Keyways (6) are provided on the top inner wall and bottom inner wall of the rotor body (2). The two sides of the keyways (6) are respectively connected to the corresponding... The assembly grooves (4) are connected, and the two key pins (5) are respectively inserted and fixed in the corresponding key grooves (6) on their opposite sides. Both annular end plates (3) are provided with sealing components. The sealing components include an axial sealing ring (7) and a radial sealing ring (8). The axial sealing ring (7) is fixedly installed on the inner ring wall of the annular end plate (3). The inner ring of the axial sealing ring (7) is in sliding sealing contact with the rotating shaft (1). The radial sealing ring (8) is fixedly installed on the side wall of the annular end plate (3) near the rotor body (2). The radial sealing ring (8) abuts against the inner wall of one side of the assembly groove (4).

2. The rotor seal structure for a file according to claim 1, characterized by: The number of axial sealing rings (7) is set to two, and the two axial sealing rings (7) have the same diameter.

3. The rasp-rotor sealing structure according to claim 1, characterized in that: The number of radial sealing rings (8) is set to two, and the two radial sealing rings (8) have different diameters.

4. The raspler rotor seal structure of claim 1 wherein: The bottom and top of the rotating shaft (1) are provided with mounting grooves, and the two key pins (5) are respectively inserted and fixed in the corresponding mounting grooves on the side that is close to each other.

5. The raspler rotor seal structure of claim 1 wherein: The outer ring wall of the annular end plate (3) and the inner ring wall of the assembly groove (4) are both smooth surfaces.

6. The raspler rotor seal structure of claim 1 wherein: The annular end plate (3) is provided with a plurality of internal hexagon bolts (10) arranged in an equally spaced annular pattern. The inner wall of one side of the assembly groove (4) is provided with a plurality of threaded grooves (11) arranged in an equally spaced annular pattern. One end of each of the plurality of internal hexagon bolts (10) is threaded into the corresponding threaded groove (11).

7. The rasp-rotor seal structure according to claim 6, characterized in that: The annular end plate (3) has multiple bolt grooves (9) arranged in an equally spaced ring on one side, and multiple hexagonal socket bolts (10) are threaded into the corresponding bolt grooves (9).

8. The raspler rotor seal structure of claim 1 wherein: Positioning pins (12) are fixedly installed on the side of the two annular end plates (3) that are close to each other. Positioning grooves (13) are opened on the inner wall of one side of the two assembly grooves (4). The two positioning pins (12) are slidably installed in the corresponding positioning grooves (13).

9. The raspler rotor seal structure of claim 1 wherein: The length of the key pin (5) is greater than the length of the keyway (6), and the two ends of the key pin (5) abut against the corresponding annular end plate (3).

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