CN109351426B

CN109351426B - Discharge mechanism and vertical mill

Info

Publication number: CN109351426B
Application number: CN201811287743.6A
Authority: CN
Inventors: 万红伟
Original assignee: Changsha Wanrong Milling Equipment Co ltd
Current assignee: Southern Graphite Research Institute Hunan Co ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2020-09-22
Anticipated expiration: 2038-10-31
Also published as: CN109351426A

Abstract

The invention discloses a discharging mechanism which comprises a shell, wherein a discharging chamber is arranged at the top end outside the shell, a rotating shaft is arranged in an inner cavity of the shell, a centrifugal disc is connected below the rotating shaft, a feeding channel is arranged between the outer wall of the centrifugal disc and the inner wall of the shell, a groove is arranged on the upper surface of the centrifugal disc and surrounds the periphery of the rotating shaft, a sleeve is sleeved outside the rotating shaft, a material guiding channel is arranged between the inner wall of the sleeve and the outer wall of the rotating shaft, the lower part of the material guiding channel is communicated with the groove, and the upper part of the material guiding channel is communicated with the discharging chamber. The invention also discloses a vertical mill. The discharging mode of traditional screen cloth has been abandoned completely to this scheme, need not worry discharge channel and blockked up the condition, can effectively ensure the normal ejection of compact of material.

Description

Discharge mechanism and vertical mill

Technical Field

The invention relates to the field of engineering machinery, in particular to a discharging mechanism and a vertical mill.

Background

The mill is the key equipment for crushing the materials after the materials are crushed. The mill can be widely applied to the production industries of cement, silicate products, novel building materials, refractory materials, fertilizers, nonferrous metal ore dressing, glass ceramics and the like, and can be used for dry-type or wet-type grinding of various ores and other grindable materials, so that the mill is widely applied to various industries.

The existing mills generally comprise vertical mills or horizontal mills, wherein the vertical mills are favored by the majority of users due to the small floor space. The vertical mill generally includes feed mechanism, discharge mechanism, grinding mechanism and actuating mechanism, wherein, for guaranteeing that the final grinding particle size of material meets the requirements of regulation, feed mechanism department generally designs the screen cloth, and the material that does not accord with the regulation particle size is intercepted and is continued to grind above the screen cloth, grinds to the material that accords with the regulation particle size and then can see through the pore of screen cloth and fall and be collected the use. In actual operation, because its inner chamber often is full of the material of various thicknesses when vertical mill uses, simultaneously, often still mixes the medium ball in the material, and material and medium ball often can extrude on the screen cloth because of the action of gravity, so, lead to the screen cloth very easily to be blockked up, greatly influenced the normal ejection of compact of material.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a discharging mechanism, and through the structural design of the discharging mechanism, the situation that a discharging channel is blocked does not need to be worried about, and the normal discharging of materials can be effectively ensured.

The utility model provides a discharging mechanism, includes the casing, the outside top of casing is provided with the ejection of compact chamber, the casing inner chamber is provided with the pivot, the pivot below be connected with centrifugal pan just centrifugal pan outer wall with be provided with the pan feeding passageway between the shells inner wall, centrifugal pan upper surface is provided with the recess just the recess encircles the pivot periphery, the pivot overcoat is equipped with the sleeve, the sleeve inner wall with be provided with the guide passageway between the pivot outer wall, wherein, guide passageway below with the recess switches on mutually, guide passageway top with the ejection of compact chamber switches on mutually.

Preferably, the rotating shaft is arranged in the center of the inner cavity of the shell and is arranged along the vertical direction.

Preferably, the inner diameter of the housing is gradually increased from the bottom to the top.

Preferably, the upper end surface of the centrifugal disc is provided with a ball-removing sheet, and the ball-removing sheet is used for removing grinding medium balls mixed in the material.

Preferably, a material guiding surface is arranged in the groove and used for guiding the materials in the groove to the lower part of the material guiding channel.

Preferably, a discharge pipe is connected to the discharge chamber and communicated with the outside.

The invention also provides a vertical grinding machine, and the vertical grinding machine is provided with any one of the discharging mechanisms.

The invention has the beneficial effects that: according to the discharging mechanism and the vertical mill provided by the invention, through the structural design, when a mixture which is ground to a certain degree and is mixed with large-particle materials, small-particle materials and grinding medium balls enters the feeding channel, the centrifugal disc can throw the large-particle materials and the grinding medium balls to a far distance to separate the large-particle materials and the grinding medium balls from the mixture, the small-particle materials are continuously extruded and fall into the groove along the feeding channel, and when the qualified small-particle materials continuously flow towards the groove, the small-particle materials gradually flow outwards along the guiding channel until the small-particle materials fall into the discharging chamber to be collected.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of a discharging mechanism disclosed in the embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it is to be understood that the terms "above", "below", "top", "center", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, fig. 1 provides a specific embodiment of a discharging mechanism of the present invention, wherein fig. 1 is a schematic overall structural diagram of the discharging mechanism disclosed in the embodiment of the present invention.

As shown in FIG. 1, the discharging mechanism provided by the invention can be applied to various mills, in particular to a vertical mill with upper discharging.

The discharging mechanism provided by the invention comprises a shell 1, a discharging chamber 2, a rotating shaft 3, a centrifugal disc 4, a feeding channel 5, a groove 6, a sleeve 7 and a material guide channel 8.

In this scheme, casing 1 generally chooses the cross-section to be circular casing. During the specific design, the inner cavity of the shell 1 is communicated with the inner cavity of the grinding mechanism of the mill, the shell 1 is generally arranged above the grinding mechanism of the mill, and the mixture ground to a certain degree can directly enter the inner cavity of the shell 1 in modes of extrusion, lifting and the like. Wherein, the shell 1 can be integrated with the grinding mechanism shell.

The top end of the outer part of the shell 1 is provided with a discharging chamber 2, and the discharging chamber 2 is used for storing small-particle materials ground to a specified size.

The inner cavity of the shell 1 is provided with a rotating shaft 3, specifically, the rotating shaft 3 generally penetrates through the outer wall of the shell 1, and the top end of the rotating shaft 3 is generally in transmission connection with an externally arranged driving mechanism. In this embodiment, the rotating shaft 3 is disposed in the center of the inner cavity of the housing 1 and is arranged along the vertical direction. Of course, the rotating shaft 3 can also be designed to form a certain included angle with the vertical surface.

The centrifugal plate 4 is connected to the below of the rotating shaft 3, a feeding channel 5 is arranged between the outer wall of the centrifugal plate 4 and the inner wall of the shell 1, a groove 6 is formed in the upper surface of the centrifugal plate 4, and the groove 6 surrounds the periphery of the rotating shaft 3. Wherein the centrifugal discs 4 are used for separating large particles, small particles and grinding media balls from the material.

Specifically, since the centrifugal force applied to the material is in direct proportion to the weight of the material, large particles with large weight and the grinding media balls are thrown by the centrifugal disc 4 to a far place and are far away from the centrifugal disc 4, and the unqualified material collides with the inner wall of the shell 1 to be continuously ground or falls back to the grinding mechanism to be continuously ground under the action of self gravity; the small-particle materials which are small in weight and are ground to the specified particle size are not thrown away by the centrifugal disc 4, and when the qualified small-particle materials continuously move towards the centrifugal disc 4 under the action of extrusion force or lifting force, the qualified small-particle materials move along the feeding channel 5 and fall into the groove 6.

In the scheme, a sleeve 7 is sleeved outside the rotating shaft 3, a material guide channel 8 is arranged between the inner wall of the sleeve 7 and the outer wall of the rotating shaft 3, wherein the lower portion of the material guide channel 8 is communicated with the groove 6, and the upper portion of the material guide channel 8 is communicated with the discharging chamber 2. The material guide channel 8 is used for guiding qualified small-particle materials to the discharge chamber 2 through the groove 6. Specifically, when qualified small-particle materials continuously flow towards the groove 6, the small-particle materials are gradually transmitted outwards along the material guide channel 8 until the small-particle materials fall into the discharge chamber 2 to be collected.

In the concrete implementation process, grind to a certain extent and mix and have the large granule material, when the mixture of small granule material and grinding medium ball entered pan feeding passageway 5 department (the material from bottom to top conduction can be through the material from bottom to top extrusion, or promote from bottom to top through helical blade, or promote by the air current that sets up the fan formation from bottom to top, etc.), centrifugal disk 4 can be with the large granule material, small granule material and grinding medium ball separate, throw the large granule material and grinding medium ball far away and separate away from the mixture, the small granule material is then continued to be extruded and falls into to the recess 6 along pan feeding passageway 5. When qualified small-particle materials continuously flow towards the groove 6, the small-particle materials are gradually transmitted to the outside along the material guide channel 8 until the small-particle materials fall into the discharging chamber 2 and are collected.

In this embodiment, to further facilitate the separation of large particle materials from small particle materials, the inner diameter of the housing 1 is preferably gradually increased from bottom to top.

In this embodiment, in order to further facilitate the separation of the grinding medium balls from the mixture, the upper end surface of the centrifugal disc 4 is provided with a ball-removing sheet 9, and the ball-removing sheet 9 is used for removing the grinding medium balls mixed in the material.

In this embodiment, in order to further facilitate the guiding and discharging of the material, preferably, a material guiding surface 10 is disposed in the groove 6, and the material guiding surface 10 is used for guiding the material in the groove 6 to the lower side of the material guiding channel 8.

In this embodiment, in order to further facilitate the transmission of the qualified small particle materials to the outside, preferably, the discharge chamber 2 is connected with a discharge pipe 11, and the discharge pipe 11 is communicated with the outside. In addition, the negative pressure type discharging device can also discharge materials in a negative pressure mode, and only the discharging chamber 2 is connected with the exhaust fan, and then the exhaust flow of the exhaust fan is controlled.

The invention also provides a vertical grinding machine, and the vertical grinding machine is provided with any one of the discharging mechanisms. The vertical mill provided by the invention completely changes the traditional screen discharging mode, can effectively prevent the material from being blocked during discharging, and can improve the grinding efficiency.

The above details are provided for the discharging mechanism and the vertical mill provided by the invention. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A discharging mechanism is characterized by comprising a shell, wherein a discharging chamber is arranged at the top end of the outer portion of the shell, a rotating shaft is arranged in an inner cavity of the shell, a centrifugal disc is connected below the rotating shaft, a feeding channel is arranged between the outer wall of the centrifugal disc and the inner wall of the shell, a groove is formed in the upper surface of the centrifugal disc and surrounds the periphery of the rotating shaft, a sleeve is sleeved outside the rotating shaft, a material guiding channel is arranged between the inner wall of the sleeve and the outer wall of the rotating shaft, the lower portion of the material guiding channel is communicated with the groove, and the upper portion of the material guiding channel is communicated with the discharging chamber;

the groove is internally provided with a material guide surface, and the material guide surface is used for guiding the materials in the groove to the lower part of the material guide channel.

2. The discharge mechanism of claim 1, wherein the shaft is disposed in the center of the housing cavity and is arranged in a vertical direction.

3. The discharge mechanism of claim 1, wherein said housing has a gradually increasing inner diameter from bottom to top.

4. The discharging mechanism according to claim 1, wherein the centrifugal disc is provided with a ball-removing sheet on the upper end surface thereof, and the ball-removing sheet is used for removing grinding medium balls mixed in the material.

5. The discharge mechanism of claim 1, wherein a discharge pipe is connected to the discharge chamber and is in communication with the exterior.

6. A vertical mill, characterized in that the vertical mill is provided with a discharging mechanism as claimed in any one of the above claims 1 to 5.