Automatic anti-blocking feeding mechanism of vertical flour mill
By adopting a combination design of variable pitch and fixed pitch spiral blades in the vertical grinding mill, the problem of blockage during material transportation is solved, and smooth material transportation and production continuity are achieved.
Patent Information
- Application Number
- CN202422382042.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The existing vertical grinding mill is prone to blockage during material transportation, resulting in empty grinding and affecting production continuity.
An automatic anti-blocking feeding mechanism for a vertical grinding mill is designed. It adopts a combination of variable-pitch and fixed-pitch spiral blades to guide the material into the center of the grinding disc through the feed spiral shaft to prevent the sticky material from clogging in the conveying pipe.
It effectively prevents materials from being blocked in the conveying pipeline, improves the smoothness of material transportation, reduces the number of shutdowns for clearing materials, and ensures the continuity of production.
Smart Images
Figure CN223430413U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a vertical mill automatic anti -blocking feeding mechanism. BACKGROUND
[0002] The vertical mill is one of important inorganic powder filler milling processing equipment, and can be applied to the processing of powder such as limestone, calcite, dolomite, slate, barite, wollastonite, brucite, calcium hydroxide, gypsum, coke, slag, phosphate and the like.
[0003] The material of the existing vertical mill is sent into the inner cavity of the vertical mill through the screw conveyor penetrating from the outside of the mill, and finally enters the center of the grinding disc. Before the material is sent into the dropping pipe, the material is usually added with a liquid medicine through the pipeline of the screw conveyor to change the performance of the material. However, the material gradually becomes viscous during the spiral conveying process to the output end of the screw conveyor, and since the pitch of the screw in the screw conveyor is the same, the viscous material will be blocked at the output end of the pipeline, causing the material to be unable to enter the dropping pipe, resulting in the empty mill phenomenon of the mill, and making the production unable to run normally. CONTENT
[0004] The utility model aims at providing a vertical mill automatic anti-blocking feeding mechanism, which helps to prevent the material from being blocked in the conveying pipeline.
[0005] The technical scheme of the utility model is as follows: a vertical mill automatic anti-blocking feeding mechanism, comprising a feeding pipeline horizontally extending into the upper cylinder of the vertical mill at one end, wherein the bottom surface of the feeding pipeline in the cylinder is provided with a discharge port, a feeding screw shaft is arranged in the feeding pipeline, and variable-pitch helical blades with gradually increasing pitch along the axial direction are arranged on the feeding screw shaft at a section between the other end of the feeding pipeline and the discharge port.
[0006] Further, constant-pitch helical blades are arranged on the feeding screw shaft at a section between the discharge port and one end of the feeding pipeline in the cylinder, and the helical direction of the constant-pitch helical blades is opposite to that of the variable-pitch helical blades.
[0007] Further, both ends of the feeding screw shaft are rotationally connected with the feeding pipeline, and the end portion of the feeding screw shaft penetrating out of the other end of the feeding pipeline is connected with a driving mechanism.
[0008] Further, the discharge port is located above the center of the grinding disc in the cylinder, and a vertical dropping pipe is connected to the discharge port.
[0009] Further, a receiving port is arranged above the discharge port of the feeding pipeline, and a receiving hopper is connected to the receiving port.
[0010] Further, the other end of the feeding pipe is provided with a feeding port and is installed with a raw material bin, and the bottom of the raw material bin is provided with a stick valve.
[0011] Further, a section of the feeding pipe between the feeding port and the barrel is provided with a liquid medicine adding port.
[0012] Further, the lower side of the section of the feeding pipe outside the barrel is provided with a mounting support.
[0013] Compared with the prior art, the feeding mechanism has the following advantages: the feeding screw shaft is designed as variable pitch helical blades from the feeding port to the discharging port, so that the viscous material is effectively prevented from being blocked in the conveying pipe during the conveying process, the conveying of the material is smoother, and the number of shutdown and material dredging is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is a structural schematic view of the utility model;
[0015] Fig. 2 It is a top view of the feeding pipe and the feeding screw shaft of the utility model;
[0016] Fig. 3 It is a sectional view of the feeding pipe and the feeding screw shaft of the utility model;
[0017] In the drawing: 10-vertical flour mill 11-barrel 20-feeding pipe 21-discharging port 22-vertical material falling pipe 23-material receiving port 24-material receiving hopper 25-feeding port 26-liquid medicine adding port 27-mounting support 30-feeding screw shaft 31-variable pitch helical blade 32-constant pitch helical blade 33-bearing assembly 40-driving mechanism 50-raw material bin 51-stick valve. DETAILED DESCRIPTION
[0018] In order to make the above features and advantages of the utility model more obvious and easy to understand, the following embodiments are described in detail below, and the drawings are described as follows, but the utility model is not limited to this.
[0019] REFERENCE Figs. 1 to 3
[0020] A vertical flour mill automatic anti-blocking feeding mechanism, comprising a feeding pipe 20 which is horizontally extended into the upper barrel 11 of the vertical flour mill 10, the bottom surface of the feeding pipe in the barrel is provided with a discharging port 21, a feeding screw shaft 30 is arranged in the feeding pipe, and a section of the feeding screw shaft between the other end of the feeding pipe and the discharging port is provided with a variable pitch helical blade 31 whose pitch gradually increases along the axial direction.
[0021] In this embodiment, the section of the feeding screw shaft between the discharge port and the end of the feeding pipe in the cylinder is provided with constant pitch helical blades 32, the helical direction of which is opposite to that of the variable pitch helical blades, so as to guide the material into the section out of the discharge port. The section of the feeding screw shaft above the discharge port can be a light shaft.
[0022] In this embodiment, both ends of the feeding screw shaft are rotatably connected with the feeding pipe through bearing assemblies 33, and the end of the feeding screw shaft penetrating out of the other end of the feeding pipe is connected with a driving mechanism 40, for example, a belt driving mechanism, so as to rotate the feeding screw shaft through the driving mechanism.
[0023] In this embodiment, the discharge port is above the center of the grinding disc in the cylinder, and a vertical material dropping pipe 22 is connected with the discharge port, so as to guide the material into the grinding disc.
[0024] In this embodiment, the section of the feeding pipe above the discharge port is provided with a material receiving port 23, and a material receiving hopper 24 is connected with the material receiving port, so as to receive the large particle powder falling from the upper part of the inner cavity of the cylinder and send it into the grinding disc again through the vertical material dropping pipe for grinding.
[0025] In this embodiment, the other end of the feeding pipe is provided with a feeding port 25 and installed with a raw material bin 50, and a rod valve 51 is arranged at the bottom of the raw material bin. The raw material bin is loaded with material, and the opening and closing of the feeding port is controlled through the rod valve.
[0026] In this embodiment, the section of the feeding pipe between the feeding port and the cylinder is provided with a liquid medicine adding port 26, so as to add liquid medicine into the feeding pipe through the port to mix with the material.
[0027] In this embodiment, the variable pitch helical blades gradually increase in pitch in the axial direction from the feeding port to the discharge port. For example, the variable pitch helical blades in the feeding port region are provided with two sections, each of which is provided with 5 helical blades at equal intervals; the section between the feeding port and the liquid medicine adding port is provided with 3 helical blades at equal intervals; the region between the liquid medicine adding port and the outer wall of the cylinder is provided with two sections, each of which is provided with 3 helical blades at equal intervals; the region between the outer wall of the cylinder and the discharge port is provided with two sections, each of which is provided with 2 helical blades at equal intervals; and in the axial direction, the pitch of the upper section is smaller than that of the lower section, so as to gradually increase the pitch from the feeding port to the discharge port. The constant pitch helical blades in the section between the discharge port and the end of the feeding pipe are provided with 4 helical blades at equal intervals.
[0028] In this embodiment, the section of the feeding pipe outside the cylinder is provided with a mounting support 27 at the lower side, so as to mount the feeding pipe.
[0029] If the utility model discloses or involves mutually fixed connecting parts or structural members, then, except for another declaration, fixed connection can be understood as: detachably fixed connection (for example, bolt or screw connection), and also can be understood as: undetachable fixed connection (for example, riveting, welding), of course, mutual fixed connection can also be replaced by integral structure (for example, integrally formed by using casting process) (except for obviously unable to use integral forming process).
[0030] In addition, the terms used for indicating the position relationship or shape in any of the technical solutions disclosed by the utility model above include the states or shapes similar, analogous or close to them, except for another declaration.
[0031] Any part provided by the utility model can be assembled by multiple individual components, or can be an individual component manufactured by integral forming process.
[0032] The above is only the preferred embodiment of the utility model, and any change and modification made according to the patent application scope of the utility model shall belong to the coverage range of the utility model.
Claims
1. An automatic anti-blocking feeding mechanism for a vertical grinding mill, comprising a feeding pipe with one end extending transversely into the upper cylinder of the vertical grinding mill, characterized in that: The bottom surface of the feed pipe in the cylinder is provided with a discharge port, a feed screw shaft is provided in the feed pipe, and a variable pitch spiral blade with a pitch gradually increasing along the axial direction is provided on the feed screw shaft in the section between the other end of the feed pipe and the discharge port.
2. The automatic anti-blocking feeding mechanism of the vertical grinding mill according to claim 1 is characterized in that: A fixed-pitch spiral blade is provided on the feed spiral shaft in a section between the discharge port and one end of the feed pipe in the cylinder. The spiral direction of the fixed-pitch spiral blade is opposite to that of the variable-pitch spiral blade.
3. The automatic anti-blocking feeding mechanism of the vertical grinding mill according to claim 1 or 2, characterized in that: Both ends of the feed screw shaft are rotatably connected to the feed pipe, and the end of the feed screw shaft passing through the other end of the feed pipe is connected to the driving mechanism.
4. The automatic anti-blocking feeding mechanism of the vertical grinding mill according to claim 1, characterized in that: The discharge port is located above the center of the grinding disc in the cylinder body, and a vertical drop pipe is connected to the discharge port.
5. The automatic anti-blocking feeding mechanism of the vertical grinding mill according to claim 1 or 4, characterized in that: The feed pipe is provided with a material receiving port above the discharge port, and the material receiving port is connected to the material receiving hopper.
6. The automatic anti-blocking feeding mechanism of the vertical grinding mill according to claim 1, characterized in that: The other end of the feed pipe is provided with a feed port and is installed with a raw material bin, and a rod valve is provided at the bottom of the raw material bin.
7. The automatic anti-blocking feeding mechanism of the vertical grinding mill according to claim 6, characterized in that: The section of the feed pipe between the feed port and the barrel is provided with a liquid medicine addition port.
8. The automatic anti-blocking feeding mechanism of a vertical grinding mill according to claim 1, 2, 4, 6 or 7, characterized in that: A mounting support is provided on the lower side of the section of the feed pipe outside the cylinder.