CN213914268U

CN213914268U - Inner and outer compound grading flour mill

Info

Publication number: CN213914268U
Application number: CN202021846541.3U
Authority: CN
Inventors: 肖文龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-08-10
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses an inner and outer compound grading flour mill, which comprises a main milling machine and a grading system, wherein the grading system comprises an inner circulation grading unit and an outer circulation grading unit, the inner circulation grading unit comprises a primary classifier arranged on the main milling machine, and a qualified product outlet of the primary classifier is communicated with a cyclone collector through a primary grading powder outlet pipe; the extrinsic cycle grading unit includes the secondary classifier, and the top feed inlet of secondary classifier is equipped with the tripper, and the tripper passes through the discharge gate of conveyer intercommunication crocus host computer, and the qualified product export on secondary classifier upper portion goes out powder pipe intercommunication cyclone collector through the secondary classification, and the unqualified product export of secondary classifier bottom passes through the feed back mouth of unloading pipe intercommunication crocus host computer. The utility model discloses an inside and outside circulation grading unit is collected the qualified powder that the crocus host computer was milled simultaneously, and the double-pipe is neat, do not keep the dead angle, and collection efficiency is high, and collection output is big, the sexual valence relative altitude of machine.

Description

Inner and outer compound grading flour mill

Technical Field

The utility model relates to a grinding equipment specifically is an inside and outside compound hierarchical milling machine.

Background

The pulverizer is widely applied to pulverizing and processing of mineral product materials in the fields of metallurgy, building materials, chemical industry, mines and the like, and mainly comprises a main machine, an analyzer, a blower, a finished product cyclone separator, a pipeline device, a motor and the like.

In the traditional process of the flour mill (commonly called as an internal circulation flour milling process), materials are ground in a main machine, fine powder is brought into an analyzer along with circulating air of an air blower for sorting, the coarse materials fall back into the main machine for regrinding, and qualified fine powder enters a finished product cyclone powder collector along with air flow and is discharged through a powder outlet pipe to obtain a finished product.

In the prior art, the traditional process of the flour mill is further developed into a main machine external circulation milling process, the main machine external grading system comprises a material returning lifting machine, a material feeding lifting machine, a grading machine and a cyclone separator, powder milled by the main machine enters the grading machine through the material feeding lifting machine for sorting, qualified powder is collected by the cyclone separator, and unqualified powder is reintroduced into the main machine through the material returning lifting machine to be milled together with a new material.

In actual production, the single internal circulation milling process or the external circulation milling process has the defect of low milling efficiency.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide an inside and outside compound hierarchical milling machine of effective increase of production to the not enough of prior art.

Can solve above-mentioned technical problem's inside and outside compound hierarchical milling machine, its technical scheme includes crocus host computer and grading system, the feed inlet has been seted up on the upper portion of crocus host computer, and the air intake has been seted up to the lower part of crocus host computer, and the discharge gate has been seted up to the bottom of crocus host computer, and what the institute differed is grading system includes inner loop grading unit and extrinsic loop grading unit, wherein:

1. the inner circulation grading unit comprises a primary classifier, the primary classifier is arranged on the main grinding machine, and a qualified product outlet of the primary classifier is communicated with the cyclone collector through a primary grading powder outlet pipe.

2. The extrinsic cycle grading unit includes the secondary grader, the top feed inlet of secondary grader is equipped with the tripper, the tripper passes through the discharge gate of conveyer intercommunication crocus host computer, and the qualified product export on secondary grader upper portion goes out powder pipe intercommunication cyclone collector through the secondary grading, and the unqualified product export of secondary grader bottom is through the feed back mouth of seting up on the unloading pipe intercommunication crocus host computer.

According to the conventionality, cyclone collector passes through the air intake of muffler connection fan, the air exit of fan passes through host computer air-supply line, secondary air-supply line and pulse tube and connects return-air box and the pulse dust collector of crocus host computer, secondary grader lower part respectively.

The utility model has the advantages that:

the utility model discloses inside and outside compound hierarchical milling machine adopts inner loop grading unit and outer loop grading unit to collect the qualified powder that the crocus host computer was milled simultaneously, and the double-pipe is neat, do not keep the dead angle, and collection efficiency is high, and collection output is big, the sexual valence relative altitude of machine.

Drawings

Fig. 1 is an isometric view of an embodiment of the present invention.

Fig. 2 is a front view of the embodiment of fig. 1.

Fig. 3 is a top view of the embodiment of fig. 2.

Fig. 4 is a side view of the embodiment of fig. 2.

And (3) identifying the figure number: 1. a main grinding machine; 2. a primary classifier; 3. a primary grading powder outlet pipe; 4. a cyclone collector; 5. a secondary classifier; 5-1, a distributor; 5-2, a return air box; 6. secondary grading powder outlet pipe; 7. a conveyor; 8. a secondary air inlet pipe; 9. an air return pipe; 10. a fan; 11. a host air inlet pipe; 12. a pulse tube; 13. provided is a pulse dust collector.

Detailed Description

The technical solution of the present invention will be further explained with reference to the embodiments shown in the drawings.

The utility model discloses inside and outside compound hierarchical milling machine includes crocus host computer 1, a grader 2, secondary classifier 5, cyclone 4, pulse dust collector 13, conveyer 7 (adopt the lifting machine in the conventionality) and fan 10, crocus host computer 1, conveyer 7 and the secondary classifier 5 of erectting set up according to preceding, well, back position, and feed inlet and feed back mouth have been seted up on the upper portion of crocus host computer 1, and the air intake has been seted up (or has air return cover in the air intake) to the lower part of crocus host computer 1, and the discharge gate has been seted up to the bottom of crocus host computer 1, cyclone 4 erects in the left side of crocus host computer 1, conveyer 7 and secondary classifier 5, fan 10 sets up in the left front side of cyclone 4, pulse dust collector 13 erects in the left side of fan 10, as shown in fig. 1, fig. 2, fig. 3, fig. 4.

The primary classifier 2 is arranged at the top of the main grinding machine 1, and a qualified powder outlet of the primary classifier 2 is communicated with a first feed inlet of the cyclone collector 4 through a primary classifying powder outlet pipe 3, as shown in fig. 1, 2, 3 and 4.

A material distributor 5-1 is arranged at a top feed inlet of the secondary classifier 5, a qualified powder outlet at the upper part of the secondary classifier 5 is communicated with a second feed inlet of the cyclone collector 4 through a secondary classifying powder outlet pipe 6, and an air return box 5-2 at the lower part of the secondary classifier 5 is communicated with a secondary air inlet pipe 8, as shown in fig. 1, fig. 2, fig. 3 and fig. 4.

The feed inlet at the bottom of the conveyor 7 is connected with the discharge outlet at the bottom of the main grinding machine 1 through a discharge pipe, and the discharge outlet at the top of the conveyor 7 is communicated with the distributor 5-1 through a discharge pipe, as shown in fig. 1, fig. 2, fig. 3 and fig. 4.

The air outlet of the cyclone collector 4 is communicated with the air inlet of the fan 10 through an air return pipe 9, as shown in fig. 1, 2 and 3.

The air outlet of fan 10 passes through the air intake or the return air cover of host computer air-supply line 11 intercommunication crocus host computer 1, secondary air-supply line 8 and host computer air-supply line 11 intercommunication, host computer air-supply line 11 still communicates the air intake of pulse dust collector 13 through pulse tube 12, as shown in fig. 1, fig. 2, fig. 3.

The utility model discloses an operation process does:

1. the raw materials are crushed to be materials with required granularity, the materials are conveyed to a storage hopper by a feeding elevator, and then the materials are uniformly and continuously conveyed into the main grinding machine 1 through a feeding hole by a vibrating feeder.

2. In the mill room of crocus host computer 1, make the grinding roller outwards swing and sticis in grinding the ring owing to the centrifugal force effect during rotation, the spiller shovel the material and send to between grinding roller and the grinding ring, the grinding roller rolls on grinding the ring and rolls the crushing to the material.

3. The fine powder generated in the grinding process of the materials is brought into the primary classifier 2 along with negative pressure air (generated by the fan 10) for sorting, the materials with excessive fineness fall back for regrinding, the qualified fine powder enters the cyclone collector 4 along with air flow through the primary classifying powder outlet pipe 3 and is discharged and collected at the discharge port, one part of the gas generated by the fan 10 is conveyed to the main grinding machine 1, one part of the gas is discharged into the atmosphere after being treated by the pulse dust collector 13, and the rest powder (qualified fine powder) collected by the pulse dust collector 13 is discharged and collected at the discharge port.

4. Coarse particles generated in the material grinding process are discharged from a discharge port at the bottom of the main grinding machine 1 along with the operation of the scraper knife and are conveyed to the conveyor 7 through a discharging pipe.

5. The conveyor 7 lifts coarse particle materials and then sends the coarse particle materials into the secondary classifier 5 through the distributor 5-1 for sorting, qualified powder enters the cyclone collector 4 through the secondary classification powder outlet pipe 6 along with air flow and is discharged and collected at the discharge port, and unqualified powder is returned into the grinding main machine 1 through the discharging pipe to participate in grinding together with newly-fed materials.

Claims

1. Inside and outside compound hierarchical milling machine, including crocus host computer (1) and grading system, the feed inlet has been seted up on the upper portion of crocus host computer (1), and the air intake has been seted up to the lower part of crocus host computer (1), and the discharge gate has been seted up to the bottom of crocus host computer (1), its characterized in that grading system includes inner loop grading unit and extrinsic loop grading unit, wherein:

the internal circulation grading unit comprises a primary classifier (2), the primary classifier (2) is arranged on the main grinding machine (1), and a qualified product outlet of the primary classifier (2) is communicated with the cyclone collector (4) through a primary grading powder outlet pipe (3);

the outer circulation grading unit comprises a secondary grading machine (5), a material distributor (5-1) is arranged at a top feed inlet of the secondary grading machine (5), the material distributor (5-1) is communicated with a discharge hole of the main grinding machine (1) through a conveyor (7), qualified product outlets on the upper portion of the secondary grading machine (5) are communicated with a cyclone collector (4) through a secondary grading powder outlet pipe (6), and unqualified product outlets at the bottom of the secondary grading machine (5) are communicated with a feed back hole formed in the main grinding machine (1) through a feed back pipe.

2. An inner and outer compound classified mill as claimed in claim 1, wherein: cyclone collector (4) pass through muffler (9) and connect the air intake of fan (10), the air exit of fan (10) passes through host computer air-supply line (11), secondary air-supply line (8) and pulse pipe (12) and connects return-air box (5-2) and pulse dust collector (13) of crocus host computer (1), secondary grader (5) lower part respectively.