CN115254328A

CN115254328A - Wet grinding grinder and wet grinding method

Info

Publication number: CN115254328A
Application number: CN202210847221.7A
Authority: CN
Inventors: 仲秋明
Original assignee: Wuxi Silusen Automation Technology Co ltd
Current assignee: Wuxi Silusen Automation Technology Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-01
Anticipated expiration: 2042-07-19
Also published as: CN115254328B

Abstract

The invention relates to a wet grinding grinder and a wet grinding method, comprising a base, wherein the base is provided with a control box and a grinding device, the base is provided with a driving device, one end of an output shaft of the driving device is connected with a grinding cavity, and a grinding cutter driven by the driving device is arranged in the grinding cavity; the bottom of the crushing cavity is an inclined plane; the crushing cutter comprises a rotary cutter head connected with a piston rod of the driving device, and a fixed cutter ring is correspondingly arranged on the inner wall of the crushing cavity; the center position of the crushing cavity is set as a feeding position, and a plurality of stages of cutters are arranged on the rotary cutter disc from the center to the circumference; the fixed cutter ring and the rotary cutter head are positioned at the same vertical height, and the fixed cutter ring bears the crushed materials of the rotary cutter head. According to the invention, the crushing cavity is arranged into the annular cavity with the bottom of the inclined structure, so that crushed materials can directly slide downwards along the inclined plane of the bottom and are not easy to remain in the crushing cavity.

Description

Wet grinding grinder and wet grinding method

Technical Field

The invention relates to the technical field of crushing equipment, in particular to a wet crushing and grinding machine and a wet crushing and grinding method.

Background

At present, the limit of the pulverizer in the industry is not very clear, and the pulverizer for wet materials and dry materials is often used in a mixing way. And the special crushing equipment for wet materials is relatively few, and under many working conditions, the wet materials are treated by adopting dry material crushing equipment.

One of the characteristics of the wet material is that the wet material has high viscosity and is easy to adhere. When the conventional crushing equipment is adopted for crushing, wet materials are not easy to discharge quickly and smoothly due to the characteristics of the wet materials, are easy to deposit at a discharge hole or remain in a crushing chamber, and the normal discharge of the equipment is influenced.

Disclosure of Invention

The applicant aims at the defects in the prior art and provides a wet grinding grinder and a wet grinding method with reasonable structure.

The technical scheme adopted by the invention is as follows:

a wet grinding grinder comprises a base, wherein a control box and a grinding device are arranged on the base, and the grinding device comprises a grinding cavity and a grinding cutter arranged in the grinding cavity; the base is provided with a driving device for driving the crushing knife,

the bottom of the crushing cavity is an inclined plane;

the crushing cutter includes:

a cutter fixing ring fixedly arranged on the inner wall of the crushing cavity,

the cutter head is rotated and is driven by the driving device; the rotary cutter disc is provided with a plurality of levels of cutters, and the materials are cut by the rotary cutter disc and the fixed cutter ring in sequence.

As a further improvement of the above technical solution:

smash the chamber including install crushing portion, the connection of smashing the portion below discharge portion of smashing the sword, the bottom of discharge portion is the inclined plane.

The discharge part adopts an annular chamber structure.

A plurality of discharge chutes are annularly arrayed on the fixed cutter ring, and at least one edge of the discharge chute faces the opening part on one side of the rotating cutter head and is provided with a blade surface.

In two radial mouths of blown down tank, the oral area size that faces rotation blade disc one side is less than the oral area size that deviates from rotation blade disc one side.

The discharge chute is arranged along the tangential direction of the fixed cutter ring.

The rotary cutter head comprises a driven shaft driven by the driving device, a plurality of crushing arms extend out of the driven shaft, and each crushing arm is provided with a crushing cutter.

The crushing cutter comprises:

the primary crushing knives are linearly arrayed on the crushing arm;

the secondary crushing knife is fixed at the end part of the crushing arm; the tip of the secondary crushing knife points to the fixed knife ring in an inclined mode, and an acute included angle is formed between the tip of the secondary crushing knife and the diameter of the rotary knife disc.

The top of the crushing cavity is matched with a top cover, the driven shaft and the crushing cavity are coaxially arranged, and the circle center is connected through a fastening piece.

A wet grinding method using a wet grinding mill includes the steps of:

and (3) an installation stage: loading the rotary cutter head into the crushing cavity, and locking the top cover by adopting a fastener after covering the top cover;

and (3) a crushing stage: starting a driving device to drive the rotating cutter head to rotate; the material to be crushed is gradually put in, the material is cut by the first-stage crushing cutter, the second-stage crushing cutter and the blade surface on the fixed cutter ring, flies out from the discharge chute of the fixed cutter ring along the tangential direction, falls into the discharging part of the crushing cavity, slides out along the inclined plane at the bottom of the discharging part, and is discharged;

cleaning or maintaining stage: the fasteners are removed, the top cover is opened, the grinding chamber is cleaned, or the components are repaired.

The invention has the following beneficial effects:

the invention has compact and reasonable structure and convenient operation, and the crushed material can directly slide down along the inclined plane of the bottom and is not easy to remain in the crushing cavity by arranging the crushing cavity as the annular cavity with the inclined structure at the bottom;

in the invention, two groups of cutters, namely the fixed cutter ring and the rotary cutter head, are arranged in the crushing cavity, so that the material can be cut for many times. Firstly, after entering from a feeding position at the top of a crushing cavity, a material is cut by a primary crushing knife arranged on a crushing arm, the primary crushing knife is provided with a plurality of knife heads, and each circle of knife heads cuts once to crush the material; when the materials are thrown out along with the centrifugal force, the blade surfaces on the fixed cutter rings crush and cut the materials again; the materials are possibly impacted to the rotary moving cutter disc under the action of the reaction force of the fixed cutter ring, the materials are cut again by the secondary crushing cutter on the rotary cutter disc, and after the materials are subjected to the action force of the secondary crushing cutter, the materials are sprayed out of the discharge chute on the premise that the crushed materials are extremely fine, and then the materials enter the discharge part along the tangential direction;

the discharge chute is arranged to be a bell mouth, so that the discharge chute can be prevented from being blocked by materials, and certain pressure can be caused by the size difference, so that auxiliary external force is provided when the materials are sprayed out, and the discharge effect is optimized.

The invention is suitable for the working condition of high-speed crushing, has larger inertia on the premise of high rotating speed of the rotating cutter disc, and can continue crushing due to the inertia formed at high speed even if water is cut off by an over-current in a sudden short time, thereby ensuring the working state.

The secondary crushing cutter is welded on the cutter holder, has high connection strength, and can perform bidirectional grinding on repeatedly impacted materials by matching with the fixed cutter ring, thereby achieving the purpose of refining grinding.

The integral dismounting structure is convenient, the mounting can be completed only by one fastening piece, and the use of the fastening piece is greatly reduced. Because the fastener, especially the threaded fastener, can be loosened under the long-term working conditions of rotation and vibration, the invention overcomes the local potential safety hazard, improves the reliability of the equipment and can also reduce the workload of each overhaul.

The bottom inclination angle of the crushing cavity needs to ensure that materials can slide down, can prevent the crushing cavity from being too large in volume due to too large inclination angle, can be adapted to a plurality of bearing seats and other parts on the market, and is wide in application range.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a sectional view of the present invention for embodying the internal structure of the pulverizer.

Fig. 3 is a schematic perspective view of the stationary knife ring installed in the crushing cavity according to the present invention.

Figure 4 is a schematic view of the rotary cutter head of the present invention mounted in a crushing chamber.

Wherein: 1. a base; 2. a control box; 3. a crushing device; 4. a top cover; 5. a fastener;

301. a grinding chamber; 302. a drive device; 303. a cutter fixing ring; 304. rotating the cutter head; 305. a pulverizing section; 306. a discharge part; 307. a discharge chute; 308. a driven shaft; 309. a pulverizing arm; 310. a primary crushing cutter; 311. a secondary crushing knife; 312. a tool apron.

Detailed Description

The following description of the embodiments of the present invention refers to the accompanying drawings.

As shown in fig. 1 to 4, the wet grinding mill of the present embodiment includes a base 1, a control box 2 and a grinding device 3 are provided on the base 1, the grinding device 3 includes a grinding chamber 301, and a grinding blade provided in the grinding chamber 301; the base 1 is provided with a driving device 302 for driving the crushing knife,

the bottom of the crushing cavity 301 is an inclined plane;

the crushing cutter includes:

a fixed cutter ring 303 which is fixedly arranged on the inner wall of the crushing cavity 301,

a rotary cutter head 304 driven by the driving device 302; a plurality of levels of cutters are arranged on the rotary cutter head 304, and materials are cut by the rotary cutter head 304 and the fixed cutter ring 303 in sequence.

The crushing chamber 301 includes a crushing portion 305 to which the crushing blade is attached, and a discharge portion 306 connected below the crushing portion 305, and the bottom of the discharge portion 306 is an inclined surface.

The discharge portion 306 adopts an annular chamber structure.

The annular array on the fixed cutter ring 303 is provided with a plurality of discharge chutes 307, and at least one edge of the discharge chutes 307 faces the opening part of one side of the rotary cutter head 304 and is provided with a blade surface.

Of the two radial ports of the discharge chute 307, the size of the port on the side facing the rotary cutter head 304 is smaller than the size of the port on the side facing away from the rotary cutter head 304.

The discharging chute 307 is arranged along the tangential direction of the stationary blade ring 303.

The rotary cutter head 304 comprises a driven shaft 308 driven by the driving device 302, a plurality of crushing arms 309 extend from the driven shaft 308, and each crushing arm 309 is provided with a crushing cutter.

The crushing cutter comprises:

a primary crushing blade 310 linearly arrayed on the crushing arm 309;

a secondary crushing blade 311 fixed to an end of the crushing arm 309; the tip of the secondary crushing cutter 311 points to the fixed cutter ring 303 in an inclined manner, and an acute included angle is formed between the tip of the secondary crushing cutter 311 and the diameter of the rotary cutter disc 304.

The top of the crushing cavity 301 is provided with a top cover 4, the top cover 4, a driven shaft 308 and the crushing cavity 301 are coaxially arranged, and the circle center positions are connected by a fastening piece 5.

The wet grinding method using the wet grinding mill of the embodiment includes the steps of:

and (3) an installation stage: loading the rotary cutter head 304 into the crushing cavity 301, and after covering the top cover 4, locking the top cover 4 by using a fastener 5;

and (3) a crushing stage: starting a driving device 302 to drive a rotary cutter head 304 to rotate; the materials to be crushed are gradually put in, the materials are cut by the first-stage crushing cutter 310, the second-stage crushing cutter 311 and the blade surface on the fixed cutter ring 303, fly out from the discharge chute 307 of the fixed cutter ring 303 along the tangential direction, fall into the discharge part 306 of the crushing cavity 301, slide out along the inclined plane at the bottom of the discharge part 306, and discharge is realized;

cleaning or maintaining stage: the fasteners 5 are removed and the cover 4 is opened to clean the milling chamber 301 or to repair the components.

The concrete structure and the working principle of the invention are as follows:

as shown in fig. 1, a control box 2 and a crushing device 3 are provided on a base 1 for the overall structure of the present invention. The control box 2 is used for controlling the on-off of the crushing device 3.

As shown in fig. 2, a schematic cross-sectional structure of the crushing apparatus 3 is shown. The crushing device 3 comprises a driving device 302, which is arranged on the base 1 and adopts a motor in the embodiment; the output shaft of the driving device 302 is coaxially provided with a crushing cavity 301.

The pulverization chamber 301 is provided as a chamber having a bottom inclined, and the pulverization chamber 301 is divided into a cylindrical pulverization portion 305 of an upper half portion and a discharge portion 306 of an annular chamber of a lower half portion. The lowest position of the discharge part 306 is provided with a discharge opening, and the materials sliding down due to self weight can be discharged from the discharge opening after being opened.

The piston rod of the drive means 302 extends into the crushing chamber 301 and drives the rotating cutterhead 304 inside the crushing chamber 301. The structure of the rotary cutter head 304 is shown in fig. 4, a driven shaft 308 sleeved on the piston rod is arranged in the middle, and crushing arms 309 are annularly arrayed on the driven shaft 308. Each crushing arm 309 is mounted with a primary crushing blade 310 and a secondary crushing blade 311. The primary crushing blade 310 faces the top cover 4 of the crushing cavity 301 in use, and the middle position of the top cover 4 is a feeding position which can accommodate materials with the maximum diameter of 50mm in the embodiment.

After the material enters the crushing cavity 301, the material is crushed by the primary crushing cutter 310. The primary crushing cutter 310 is provided with a plurality of blocks to form a plurality of circles, so that the material can be crushed more finely after passing through one circle of cutters. Referring to fig. 3, the material is thrown toward the stationary knife ring 303 welded on the inner wall of the crushing cavity 301 along with the centrifugal force, is cut again by the edge face of the stationary knife ring 303, and is thrown toward the secondary crushing knife 311 due to the reaction force when impacting the stationary knife ring 303, and the material is crushed again by the secondary crushing knife 311 obliquely pointed out in the horizontal direction until the particle fineness can be thrown out from the discharge chute 307.

After the material is thrown out from the discharging chute 307, as shown in fig. 2, the material falls into the discharging portion 306 from the crushing portion 305, the bottom of the discharging portion 306 is an inclined surface, and the material flows downward under the influence of the self-weight until reaching the discharging opening.

In an embodiment of the present invention, the included angle at the bottom of the discharging portion 306 requires that the material can flow downward at the angle, and at the same time, the inclination angle cannot be too large, if the inclination angle is too large, the corresponding vertical height is very high, and the requirements for other parts are higher, and it is difficult to install the material using conventional national standard parts.

In one embodiment of the invention, the size of the top cover 4 is similar to the size of the size reduction chamber 301 to facilitate removal of the rotatable cutter head 304. In addition, the top wall of the crushing chamber 301 has a certain inclination angle which allows a slightly smaller inclination angle than the bottom wall of the crushing chamber 301, preventing the materials from splashing and adhering.

The invention is particularly suitable for the working condition of high-speed cutting and crushing, and can obtain the ultrafine straight-line wet material which is difficult to deposit by the cooperation of repeated impact and high-speed bidirectional grinding of the multistage cutters, the high-strength secondary crushing cutters 311 welded on the cutter holder 312 and the blade surface of the fixed cutter ring 303. Meanwhile, the whole safety coefficient of the equipment is high, the structure is convenient to operate, the operation is smooth when the equipment is used, and the operation is not easy to stop due to power failure and water break. In addition, in the process of power-off and water-break operation of the equipment in a short time, the equipment has high safety factor when inertia cutting is carried out due to less heat generation, less power-on positions and less fastening structures.

The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.

Claims

1. The utility model provides a wet grinding grinds machine, includes base (1), is equipped with control box (2) and reducing mechanism (3) on base (1), its characterized in that: the crushing device (3) comprises a crushing cavity (301) and a crushing knife arranged in the crushing cavity (301); a driving device (302) for driving the crushing knife is arranged on the base (1),

the bottom of the crushing cavity (301) is an inclined plane;

the crushing cutter includes:

a cutter fixing ring (303) fixedly arranged on the inner wall of the crushing cavity (301),

the rotary cutter head (304) is driven by the driving device (302); a plurality of levels of cutters are arranged on the rotary cutter head (304), and materials are sequentially cut by the rotary cutter head (304) and the fixed cutter ring (303).

2. The wet grinding mill as claimed in claim 1, characterized in that: crushing chamber (301) are including installing crushing portion (305) of smashing the sword, connecting in the row material portion (306) of crushing portion (305) below, the bottom of row material portion (306) is the inclined plane.

3. The wet grinding mill as claimed in claim 2, characterized in that: the discharge part (306) adopts an annular chamber structure.

4. The wet grinding mill as claimed in claim 1, characterized in that: a plurality of discharge grooves (307) are arranged on the fixed cutter ring (303) in an annular array mode, at least one edge of the discharge groove (307) faces the opening portion of one side of the rotating cutter head (304), and a blade surface is arranged on the edge.

5. The wet mill as set forth in claim 4, characterized in that: in two radial mouths of discharge chute (307), the mouth size of one side facing to the rotary cutter head (304) is smaller than the mouth size of one side deviating from the rotary cutter head (304).

6. The wet mill as set forth in claim 4, characterized in that: the discharging groove (307) is arranged along the tangential direction of the fixed cutter ring (303).

7. The wet grinding mill of claim 1, wherein: the rotary cutter head (304) comprises a driven shaft (308) driven by the driving device (302), a plurality of crushing arms (309) extend out of the driven shaft (308), and each crushing arm (309) is provided with a crushing cutter.

8. The wet grinding mill of claim 7, wherein: the crushing cutter comprises:

a primary crushing blade (310) linearly arrayed on the crushing arm (309);

a secondary crushing blade (311) fixed to the end of the crushing arm (309); the tool nose of the secondary crushing knife (311) is inclined to point to the fixed knife ring (303), and an acute included angle is formed between the tool nose of the secondary crushing knife (311) and the diameter of the rotary cutter head (304).

9. The wet mill as set forth in claim 7, characterized in that: crushing chamber (301) top is supporting to be equipped with top cap (4), and top cap (4), driven shaft (308) and crushing chamber (301) coaxial setting adopt fastener (5) to connect in the centre of a circle position.

10. A wet grinding method using the wet grinding mill of claim 1, characterized by comprising the steps of:

and (3) an installation stage: a rotating cutter head (304) is arranged in the crushing cavity (301), and after the top cover (4) is covered, the top cover (4) is locked by a fastener (5);

and (3) a crushing stage: starting a driving device (302) to drive a rotary cutter head (304) to rotate; the method comprises the following steps that materials to be crushed are gradually fed, cut by blade surfaces on a primary crushing knife (310), a secondary crushing knife (311) and a fixed knife ring (303), fly out of a discharge chute (307) of the fixed knife ring (303) along the tangential direction, fall into a discharging part (306) of a crushing cavity (301), slide out along an inclined plane at the bottom of the discharging part (306), and discharge is achieved;

cleaning or maintaining stage: removing the fasteners (5), opening the top cover (4), cleaning the crushing cavity (301) or repairing the components.