Sealing structure of vertical mill powder concentrator

Abstract

The utility model discloses a sealing structure of a vertical mill powder concentrator, and relates to the technical field of vertical mill powder concentrators. Comprising a shell, the top end of the shell is rotationally connected with an output shaft, the bottom end of the output shaft is fixedly connected with a powder selecting rotor, a liquid sealing assembly is installed between the shell and the powder selecting rotor, and screen holes are formed in the powder selecting rotor. Due to the arrangement of the liquid sealing assembly, the sealing liquid is added into the first liquid discharging chamber, the bottom of the T-shaped ring piece is bent and immersed into the liquid in the first liquid discharging chamber, in the rotating process of the powder selecting rotor, the rotating process of the T-shaped ring piece and the running process of the powder selecting machine, airflow can pass through the sieve holes, but due to the existence of the liquid, the airflow can pass through the sieve holes. When the powder selecting rotor rotates, airflow cannot pass through the gap between the shell and the powder selecting rotor, so that coarse particles cannot pass through the gap between the shell and the powder selecting rotor, the phenomenon that the coarse particles run away is avoided, and meanwhile the situation that the coarse particles make contact with parts when in the gap, and the parts are abraded is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mill powder classifiers, in particular to a sealing structure of a vertical mill powder classifier. Background Art

[0002] The vertical mill powder concentrator utilizes the relative movement between the grinding disc and the grinding roller to crush the material, and crushes the granular material into powder. The powdered material is lighter and is sucked away by a rotating fan. The material is screened according to its particle size by the powder concentrator and finally discharged and collected through the discharge pipe.

[0003] As disclosed in the application number "201920604512.7", "A sealing structure of a vertical mill powder classifier and a vertical mill powder classifier" includes: a first sealing ring, a second sealing ring, a third sealing ring and a heat-resistant sealing rubber ring, the first sealing ring and the second sealing ring are buckled with each other, the first sealing ring is provided with an annular protrusion on the side facing the second sealing ring, and the annular protrusion is embedded in the annular groove, the third sealing ring is arranged on the side of the first sealing ring facing the second sealing ring, and is arranged on the outside of the first sealing ring, the heat-resistant sealing rubber ring is sleeved outside the second sealing ring, and one end of the heat-resistant sealing rubber ring is connected to the second sealing ring, and the inner wall of the other end of the heat-resistant sealing rubber ring is fitted with the outer wall of the third sealing ring. The sealing performance of the sealing structure is good. The utility model also provides a vertical mill powder classifier, including the above-mentioned sealing structure, so the sealing performance of the vertical mill powder classifier is good, and the quality of the raw material powder obtained is good.

[0004] During powder selection, due to the airflow, some coarse particles will flow out from the discharge port of the vertical mill when passing through the gap of the rotor. This will cause coarse particles to escape and affect the overall particle quality. In addition, the coarse particles will contact with parts in the gap and cause wear of the parts. Therefore, a sealing structure for a vertical mill powder selector is proposed. Utility Model Content

[0005] The utility model aims to provide a sealing structure of a vertical mill powder classifier to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure of a vertical mill powder classifier, comprising a shell, the top end of the shell is rotatably connected to an output shaft, the bottom end of the output shaft is fixedly connected to a powder selection rotor, a liquid seal assembly is installed between the shell and the powder selection rotor, and sieve holes are provided on the powder selection rotor; the liquid seal assembly comprises a No. 1 liquid discharge chamber, the No. 1 liquid discharge chamber is fixedly installed at the bottom end of the shell, the bottom end of the outer wall of the powder selection rotor is fixedly connected to a T-ring, the T-ring is inside the No. 1 liquid discharge chamber, the outer wall of the No. 1 liquid discharge chamber is fixedly connected to a connecting pipe, a liquid level sensor is installed inside the connecting pipe, the outer wall of the powder selection rotor is installed with a No. 1 bearing, and the outer wall of the No. 1 bearing is fixed to the inner wall of the shell.

[0007] Preferably, a drain pipe is fixedly connected to the outer wall of the No. 1 liquid discharge chamber, and a sealing cover is installed inside the drain pipe.

[0008] Preferably, the liquid seal assembly also includes a No. 2 liquid discharge chamber, which is fixedly installed at the bottom end of the shell, and a No. 2 bearing is installed on the inner wall of the No. 2 liquid discharge chamber, and the top end of the No. 2 bearing is rotatably connected to the bottom end of the powder selection rotor.

[0009] Preferably, the outer wall of the No. 2 liquid discharge chamber is fixedly connected with a liquid inlet pipe, and the outer wall of the No. 2 liquid discharge chamber is fixedly connected with a liquid outlet pipe.

[0010] Preferably, a circular hole is opened at the top end of the shell, and the outer wall of the output shaft is rotatably connected to the shell through the circular hole.

[0011] Preferably, a bolt is installed at the bottom end of the output shaft, and the bottom end of the output shaft is fixed to the bottom end inside the powder selection rotor through the bolt.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The sealing structure of the vertical mill powder classifier is provided with a liquid seal component. By adding sealing liquid in the No. 1 discharge chamber, the bottom of the T-ring is bent and immersed in the liquid in the No. 1 discharge chamber. During the rotation of the powder classifier rotor, the T-ring rotates. During the operation of the powder classifier, airflow passes through the sieve holes. However, due to the presence of liquid, the airflow cannot pass through the gap between the shell and the powder classifier rotor, thereby preventing coarse particles from passing through the gap between the shell and the powder classifier rotor, thereby avoiding the occurrence of coarse particles running away and reducing the contact between coarse particles and parts in the gap, causing wear of parts.

[0014] At the same time, through the arrangement of the No. 2 drain chamber and the No. 2 bearing, by putting lubricating oil in the No. 2 drain chamber and installing the No. 2 bearing in the No. 2 drain chamber, a rotational connection between the housing and the powder selection rotor is achieved through the No. 2 bearing. When liquid-tightness is achieved through the lubricating oil, the rotating No. 2 bearing is lubricated by the lubricating oil at the same time, thereby improving the practicality of the liquid seal assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the first utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0017] Figure 3 It is a cross-sectional view of the second utility model;

[0018] Figure 4 for Figure 3 A partial enlarged view of B.

[0019] In the figure: 1. housing; 2. output shaft; 3. powder selection rotor; 4. sieve hole; 5. liquid seal assembly; 501. No. 1 liquid discharge chamber; 502. T-ring; 503. connecting pipe; 504. No. 1 bearing; 505. No. 2 liquid discharge chamber; 506. No. 2 bearing. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1 - Figure 4 As shown, the utility model provides a technical solution: a sealing structure of a vertical mill powder classifier, comprising a shell 1, the top of the shell 1 is rotatably connected to an output shaft 2, the bottom end of the output shaft 2 is fixedly connected to a powder selection rotor 3, a liquid seal assembly 5 is installed between the shell 1 and the powder selection rotor 3, and a sieve hole 4 is opened on the powder selection rotor 3; the liquid seal assembly 5 comprises a No. 1 liquid discharge chamber 501, the No. 1 liquid discharge chamber 501 is fixedly installed at the bottom end of the shell 1, the bottom end of the outer wall of the powder selection rotor 3 is fixedly connected to a T-ring 502, the T-ring 502 is inside the No. 1 liquid discharge chamber 501, the outer wall of the No. 1 liquid discharge chamber 501 is fixedly connected to a connecting pipe 503, a liquid level sensor is installed inside the connecting pipe 503, the outer wall of the powder selection rotor 3 is installed with a No. 1 bearing 504, and the outer wall of the No. 1 bearing 504 is fixed to the inner wall of the shell 1.

[0022] The outer wall of the No. 1 discharge chamber 501 is fixedly connected with a discharge pipe, and a sealing cover is installed inside the discharge pipe.

[0023] The liquid seal assembly 5 also includes a No. 2 liquid discharge chamber 505, which is fixedly installed at the bottom end of the shell 1. A No. 2 bearing 506 is installed on the inner wall of the No. 2 liquid discharge chamber 505, and the top end of the No. 2 bearing 506 is rotatably connected to the bottom end of the powder selection rotor 3.

[0024] The outer wall of the No. 2 liquid discharge chamber 505 is fixedly connected with a liquid inlet pipe, and the outer wall of the No. 2 liquid discharge chamber 505 is fixedly connected with a liquid outlet pipe.

[0025] A circular hole is opened at the top of the housing 1, and the outer wall of the output shaft 2 is rotatably connected to the housing 1 through the circular hole.

[0026] The bottom end of the output shaft 2 is installed with bolts, and the bottom end of the output shaft 2 is fixed to the bottom end inside the powder selection rotor 3 through the bolts.

[0027] The vertical grinding mill runs to form airflow, which carries particles. The output shaft 2 rotates, thereby causing the powder selection rotor 3 to rotate. The particles pass through the sieve holes 4 under the action of the airflow to complete the discharge. Example 1

[0028] The sealing liquid placed in the No. 1 discharge chamber 501 can be lubricating oil, so that although there is a gap between the powder selection rotor 3 and the shell 1, due to the presence of the lubricating oil, there is no airflow passing through the gap. In the absence of airflow, it is difficult for particles to pass through. Although there is a gap between the lubricating oil position and the powder selection rotor 3 and the shell 1, the installation of the No. 1 bearing 504 enables the powder selection rotor 3 to maintain the distance between the powder selection rotor 3 and the shell 1 during rotation to avoid contact. The sealing liquid is poured into the No. 1 discharge chamber 501 through the connecting pipe 503, and the sealing between the powder selection rotor 3 and the shell 1 is achieved by adding liquid, wherein the bottom end of the T-ring 502 is immersed in the sealing liquid in the No. 1 discharge chamber 501, and during the rotation of the powder selection rotor 3 and the T-ring 502, the liquid can prevent the passage of airflow, and the liquid level sensor can detect the liquid level inside the No. 1 discharge chamber 501. Example 2

[0029] The No. 2 bearing 506 is placed in the No. 2 drain chamber 505, wherein the No. 2 drain chamber 505 is used to place lubricating oil. During the rotation of the powder selection rotor 3, the lubricating oil can realize the effect of liquid sealing and lubricate the No. 2 bearing 506. By setting the No. 2 drain chamber 505 and the No. 2 bearing 506, by putting lubricating oil in the No. 2 drain chamber 505 and installing the No. 2 bearing 506 in the No. 2 drain chamber 505, the rotational connection between the housing 1 and the powder selection rotor 3 is realized through the No. 2 bearing 506. When liquid-tightness is achieved through the lubricating oil, the rotating No. 2 bearing 506 is lubricated by the lubricating oil at the same time, thereby improving the practicality of the liquid seal assembly 5.

[0030] By setting the liquid seal component 5, sealing liquid is added to the No. 1 discharge chamber 501, wherein the bottom of the T-ring 502 is bent and immersed in the liquid in the No. 1 discharge chamber 501. During the rotation of the powder selection rotor 3, the T-ring 502 rotates. During the operation of the powder selection machine, airflow passes through the sieve hole 4, but due to the presence of liquid, the airflow cannot pass through the gap between the shell 1 and the powder selection rotor 3, and thus the coarse particles cannot pass through the gap between the shell 1 and the powder selection rotor 3, thereby avoiding the occurrence of coarse particles running away and reducing the contact between the coarse particles and the parts in the gap, causing the wear of the parts.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A sealing structure for a vertical mill powder separator, comprising a housing (1), characterized in that: The top end of the housing (1) is rotatably connected to an output shaft (2), the bottom end of the output shaft (2) is fixedly connected to a powder selection rotor (3), a liquid seal assembly (5) is installed between the housing (1) and the powder selection rotor (3), and a sieve hole (4) is provided on the powder selection rotor (3); the liquid seal assembly (5) comprises a No. 1 liquid discharge chamber (501), the No. 1 liquid discharge chamber (501) is fixedly installed at the bottom end of the housing (1), a T-shaped ring (502) is fixedly connected to the bottom end of the outer wall of the powder selection rotor (3), the T-shaped ring (502) is located inside the No. 1 liquid discharge chamber (501), the outer wall of the No. 1 liquid discharge chamber (501) is fixedly connected to a connecting pipe (503), a liquid level sensor is installed inside the connecting pipe (503), and a No. 1 bearing (504) is installed on the outer wall of the powder selection rotor (3), and the outer wall of the No. 1 bearing (504) is fixed to the inner wall of the housing (1).

2. The sealing structure of a vertical mill powder concentrator according to claim 1 is characterized in that: The outer wall of the first liquid discharge chamber (501) is fixedly connected with a liquid discharge pipe, and a sealing cover is installed inside the liquid discharge pipe.

3. The sealing structure of a vertical mill powder concentrator according to claim 1 is characterized in that: The liquid seal assembly (5) further comprises a No. 2 liquid discharge chamber (505), the No. 2 liquid discharge chamber (505) being fixedly mounted at the bottom end of the housing (1), a No. 2 bearing (506) being mounted on the inner wall of the No. 2 liquid discharge chamber (505), the top end of the No. 2 bearing (506) being rotatably connected to the bottom end of the powder selection rotor (3).

4. The sealing structure of a vertical mill powder concentrator according to claim 3 is characterized in that: The outer wall of the No. 2 liquid discharge chamber (505) is fixedly connected to a liquid inlet pipe, and the outer wall of the No. 2 liquid discharge chamber (505) is fixedly connected to a liquid outlet pipe.

5. The sealing structure of a vertical mill powder concentrator according to claim 1 is characterized in that: A circular hole is provided at the top end of the shell (1), and the outer wall of the output shaft (2) is rotatably connected to the shell (1) via the circular hole.

6. The sealing structure of a vertical mill powder concentrator according to claim 1, characterized in that: The bottom end of the output shaft (2) is mounted with a bolt, and the bottom end of the output shaft (2) is fixed to the bottom end inside the powder selection rotor (3) via the bolt.

Images