CN112156853A

CN112156853A - Vertical grinding device for sand making

Info

Publication number: CN112156853A
Application number: CN202011088317.7A
Authority: CN
Inventors: 曹酒毓; 赵俊; 康宇; 武艳文
Original assignee: Nanjing Kisen International Engineering Co Ltd
Current assignee: Nanjing Kisen International Engineering Co Ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-01-01

Abstract

The invention relates to a vertical mill device for sand making, which comprises a speed reducer, a motor arranged on one side of the speed reducer, a shell fixed at the upper end of the speed reducer, and a grinding disc fixed on an output shaft of the speed reducer and transversely arranged at the bottom in the shell, wherein a rotating shaft of the motor is connected with an input shaft of the speed reducer; the shell is at least provided with two grinding assemblies which are distributed at equal angles along the circumferential direction, and each grinding assembly comprises a base, a hydraulic spring, a swing rod, a grinding roller and a main shaft; the grinding roller and the grinding disc are interacted to grind the raw materials, so that the noise and the vibration are small, and the energy consumption is reduced; the grinding roller has a buffering function by virtue of the hydraulic spring, so that the stability is improved, the grinding roller is prevented from being damaged by materials with overlarge particle sizes, the service life is prolonged, and the production cost is reduced; meanwhile, the sand yield of the finished sand is improved, and the modulus of the finished sand is reduced; in addition, machine-made sand with various particle size ranges can be prepared according to needs so as to expand the application range.

Description

Vertical grinding device for sand making

Technical Field

The invention relates to a vertical sand making mill device.

Background

At present, the machine-made sand production industry generally adopts a mode of crushing raw materials to produce machine-made sand, the most main raw material crushing equipment is a vertical shaft impact crusher, the principle of the vertical shaft impact crusher is that the raw materials are thrown onto a reflecting plate to be crushed after being accelerated, and the kinetic energy loss of the raw materials is utilized to realize crushing; however, the vertical shaft impact crusher can generate larger impact force during working, so that the service life of the wear-resistant part is shorter, and the production cost is higher; meanwhile, the energy consumption is high, the noise and the vibration are large, and the sand yield of the finished sand is low and the modulus is high; in addition, the specific amount of the machine-made sand with the particle size within the range of 0.3-0.6 mm is low, and the specification of the produced machine-made sand is easy to break, so that the application range is small and the machine-made sand is to be further improved.

Disclosure of Invention

In view of the current situation of the prior art, the technical problem to be solved by the invention is to provide a vertical sand mill device for sand production, which has low noise and vibration, reduces energy consumption and production cost, improves the sand yield of finished sand, reduces the modulus of the finished sand, and enlarges the application range.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a system sand founds mill device, includes the speed reducer, locate the motor of speed reducer one side, fix the casing in the speed reducer upper end and fix on the output shaft of speed reducer and transversely locate the mill of the inside bottom of casing, the axis of rotation of motor links to each other its characterized in that with the input shaft of speed reducer: the grinding device comprises a shell, a grinding roller and a grinding wheel, wherein the shell is provided with at least two grinding assemblies which are distributed at equal angles along the circumferential direction, and each grinding assembly comprises a base, a hydraulic spring, a swing rod, a grinding roller and a main shaft; the grinding roller is concentrically and rotatably sleeved at the inner end of the main shaft and arranged above the grinding disc, a sinking cavity is formed in the upper end of the grinding disc, a first cambered surface distributed in the circumferential direction is formed on the edge of the bottom surface of the sinking cavity, a second cambered surface distributed in the circumferential direction is formed on the side surface of the circumference of the grinding roller, and the second cambered surface is spaced from the first cambered surface by a certain distance and is matched with the first cambered surface; the top of the shell is also inserted with vertically distributed feed pipes; the shell is internally provided with a plurality of material stabilizing assemblies which are distributed at equal angles along the circumferential direction; the outer edge of the lower end of the grinding disc is further fixedly provided with a plurality of scraping plates which are distributed at equal angles along the circumferential direction, correspondingly, one side of the bottom of the shell is further provided with a discharge hole, and the discharge hole is matched with the scraping plates.

Preferably, the material stabilizing assembly comprises a cross beam, a connecting plate and a material stabilizing plate; the crossbeam transversely fixes between the inner wall of casing and the outer wall of inlet pipe, connecting plate detachable fixes on the crossbeam and adjustable fixed height, steady flitch is fixed at the lower extreme of connecting plate.

Preferably, a fillet is formed on the outer side of the lower end of the material stabilizing plate, and the fillet and the first arc surface are spaced by a certain distance and are matched with each other.

Preferably, a material blocking ring is further fixed on the edge of the upper end of the grinding disc, and the material blocking ring is concentrically arranged outside the opening of the sinking cavity.

Preferably, the grinding specific pressure F of the grinding roller is 0.1-0.7 MPa.

Compared with the prior art, the invention has the advantages that: the grinding roller and the grinding disc are interacted to grind the raw materials, so that the noise and the vibration are small, and the energy consumption is reduced; the grinding roller has a buffering function by virtue of the hydraulic spring, so that the stability is improved, the grinding roller is prevented from being damaged by materials with overlarge particle sizes, the service life is prolonged, and the production cost is reduced; meanwhile, the sand yield of the finished sand is improved, and the modulus of the finished sand is reduced; in addition, machine-made sand with various particle size ranges can be prepared according to needs so as to expand the application range.

Drawings

FIG. 1 is a front view structural diagram of the present invention;

fig. 2 is a top view structural diagram of the present invention.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.

As shown in fig. 1-2, a vertical sand mill device comprises a speed reducer 6, a motor 5 arranged on one side of the speed reducer 6, a housing 1 fixed on the upper end of the speed reducer 6, and a grinding disc 2 fixed on an output shaft of the speed reducer 6 and transversely arranged at the bottom inside the housing 1, wherein a rotating shaft of the motor 5 is connected with an input shaft of the speed reducer 6; the shell 1 is at least provided with two grinding assemblies which are distributed at equal angles along the circumferential direction, and each grinding assembly comprises a base 14, a hydraulic spring 13, a swing rod 8, a grinding roller 9 and a main shaft 12; the base 14 is arranged on the outer side of the shell 1, the swing rod 8 is rotatably connected to the upper end of the base 14, the fixed end of the hydraulic spring 13 is rotatably connected to the base 14, the telescopic end of the hydraulic spring 13 is rotatably connected to the lower end of the swing rod 8, the main shaft 12 is arranged in the shell 1 in an inserting mode, the outer end of the main shaft 12 is fixed to the upper end of the swing rod 8, the grinding roller 9 is concentrically and rotatably sleeved at the inner end of the main shaft 12 and arranged above the grinding disc 2, the upper end of the grinding disc 2 is provided with a sinking cavity 21, the bottom surface edge of the sinking cavity 21 is provided with a first arc surface 22 in circumferential distribution, a second arc surface 91 in circumferential distribution is formed on the circumferential side surface of the grinding roller 9, and the second arc surface; the top of the shell 1 is also inserted with a vertically distributed feeding pipe 10; a plurality of material stabilizing assemblies which are distributed at equal angles along the circumferential direction are further arranged in the shell 1, and each material stabilizing assembly comprises a cross beam 13, a connecting plate 11 and a material stabilizing plate 16; the cross beam 13 is transversely fixed between the inner wall of the shell 1 and the outer wall of the feeding pipe 10, the connecting plate 11 is detachably fixed on the cross beam 13 and can adjust the fixed height, the material stabilizing plate 16 is fixed at the lower end of the connecting plate 11, a fillet 161 is formed on the outer side of the lower end of the material stabilizing plate 16, and the fillet 161 and the first cambered surface 22 are mutually matched at a certain distance; the outer edge of the lower end of the grinding disc 2 is also fixedly provided with a plurality of scraping plates 3 which are distributed at equal angles along the circumferential direction, correspondingly, one side of the bottom of the shell 1 is also provided with a discharge hole 4, and the discharge hole 4 is matched with the scraping plates 3.

The edge of the upper end of the grinding disc 2 is also fixed with a material stop ring 7, and the material stop ring 7 is concentrically arranged outside the opening of the sinking cavity 21.

The grinding specific pressure F of the grinding roller 9 (namely the grinding force/(roller width roller diameter) exerted by the grinding roller 10 on the materials on the grinding disc 2) is 0.1-0.7 MPa.

The working principle is as follows: the raw material enters the shell 1 through the feeding pipe 10 and falls onto the grinding disc 2, the rotating shaft of the motor 5 drives the input shaft of the speed reducer 6 to rotate, and then the grinding disc 2 is driven to rotate by the output shaft of the speed reducer 6, so that the raw material is driven to move towards the edge of the grinding disc 2 by centrifugal force, when the raw material moves between the lower side of the grinding roller 9 and the first cambered surface 22, the raw material is crushed under the extrusion of the grinding roller 9 and the grinding disc 2, and meanwhile, the grinding roller 9 is driven to rotate passively; the ground material continues to move towards the opening edge of the sinking chamber 21 under the driving of the grinding disc 2 until the ground material passes through the material blocking ring 7, leaves the grinding disc 2 and falls to the inner bottom of the shell 1, and moves above the discharge port 4 under the driving of the plurality of scraping plates 3 and is discharged outwards through the discharge port 4; when the material that has big particle size enters into between the downside of grinding roller 9 and first cambered surface 22, if grinding roller 9 can't pulverize the time, the material can upwards jack-up grinding roller 9, and then presses hydraulic spring 13's flexible end with the help of rotatable pendulum rod 8 to play the cushioning effect, pendulum rod 8 can reset the swing under the bounce effect of hydraulic spring 13's flexible end afterwards, and then drive grinding roller 9 and reset.

The grinding specific pressure F of the grinding roller 9 is 0.1-0.7 MPa, so that the sand making efficiency is improved, excessive powder is avoided, and the balance of various gradations in the particle size range of 0.075-4.75 mm is guaranteed.

The ground materials are stacked in the sinking cavity 21 to form a rugged material bed and rotate along with the grinding disc 2, and when the materials rotate to a plurality of material stabilizing plates 16, the rugged material bed can be scraped by the material stabilizing plates 16 to be beneficial to the next grinding; the distance between the lower end of the material stabilizing plate 16 and the first cambered surface 22 can be adjusted by adjusting the fixed height of the connecting plate 11 on the cross beam 13, so that the thickness of a material bed entering between the grinding roller 9 and the first cambered surface 22 is adjusted, and the vertical grinding mill can stably run.

The grinding device crushes the raw materials by means of the interaction of the grinding roller 9 and the grinding disc 2, has low noise and vibration and reduces energy consumption; the grinding roller 9 has a buffering function by virtue of the hydraulic spring 13, so that the stability is improved, the grinding roller 9 is prevented from being damaged by materials with overlarge particle sizes, the service life is prolonged, and the production cost is reduced; meanwhile, the sand yield of the finished sand is improved, and the modulus of the finished sand is reduced; in addition, machine-made sand with various particle size ranges can be prepared according to needs so as to expand the application range.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a system sand founds mill device, includes the speed reducer, locate the motor of speed reducer one side, fix the casing in the speed reducer upper end and fix on the output shaft of speed reducer and transversely locate the mill of the inside bottom of casing, the axis of rotation of motor links to each other its characterized in that with the input shaft of speed reducer: the grinding device comprises a shell, a grinding roller and a grinding wheel, wherein the shell is provided with at least two grinding assemblies which are distributed at equal angles along the circumferential direction, and each grinding assembly comprises a base, a hydraulic spring, a swing rod, a grinding roller and a main shaft; the grinding roller is concentrically and rotatably sleeved at the inner end of the main shaft and arranged above the grinding disc, a sinking cavity is formed in the upper end of the grinding disc, a first cambered surface distributed in the circumferential direction is formed on the edge of the bottom surface of the sinking cavity, a second cambered surface distributed in the circumferential direction is formed on the side surface of the circumference of the grinding roller, and the second cambered surface is spaced from the first cambered surface by a certain distance and is matched with the first cambered surface; the top of the shell is also inserted with vertically distributed feed pipes; the shell is internally provided with a plurality of material stabilizing assemblies which are distributed at equal angles along the circumferential direction; the outer edge of the lower end of the grinding disc is further fixedly provided with a plurality of scraping plates which are distributed at equal angles along the circumferential direction, correspondingly, one side of the bottom of the shell is further provided with a discharge hole, and the discharge hole is matched with the scraping plates.

2. A sand-making vertical mill apparatus according to claim 1, wherein: the material stabilizing assembly comprises a cross beam, a connecting plate and a material stabilizing plate; the crossbeam transversely fixes between the inner wall of casing and the outer wall of inlet pipe, connecting plate detachable fixes on the crossbeam and adjustable fixed height, steady flitch is fixed at the lower extreme of connecting plate.

3. A sand-making vertical mill apparatus according to claim 2, wherein: and a fillet is formed on the outer side of the lower end of the material stabilizing plate, and the fillet and the first cambered surface are separated by a certain distance and are matched with each other.

4. A sand-making vertical mill apparatus according to claim 1, wherein: the edge of the upper end of the grinding disc is also fixedly provided with a material blocking ring which is concentrically arranged at the outer side of the opening of the sinking cavity.

5. A sand-making vertical mill apparatus according to claim 1, wherein: the grinding specific pressure F of the grinding roller is 0.1-0.7 MPa.