CN211385345U

CN211385345U - Coating powder vertical grinding machine with high utilization rate

Info

Publication number: CN211385345U
Application number: CN201922293374.8U
Authority: CN
Inventors: 练强; 梅志文
Original assignee: Guangzhou Lide Environmental Protection Technology Co ltd
Current assignee: Guangzhou Lide Environmental Protection Technology Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-09-01
Anticipated expiration: 2029-12-18

Abstract

The utility model relates to a powder coating production technical field specifically discloses a coating powder vertical grinding machine of high usage, which comprises a hopper, the feeder, the machine is ground, first separator, dust collector, the second separator, feed back pipe and collecting box, the feeder is ground into powder in carrying the hopper interior raw materials to the grinding machine, it is connected with first separator pan feeding mouth to grind the machine discharge gate, first separator has two discharge gates that communicate dust collector pan feeding mouth and second separator pan feeding mouth respectively, be arranged in respectively separating superfine powder to dust collector in and carry remaining powder to the second separator in, the second separator has two exports that communicate feed back pipe and collecting box respectively, the feed back pipe is arranged in sending the bold powder back the hopper. The utility model discloses can grind the coating piece into powder to isolate granule volume undersize or too big coating powder, dry the powder of volume too big again and loopback and grind once more, separate, greatly improved utilization ratio of raw materials.

Description

Coating powder vertical grinding machine with high utilization rate

Technical Field

The utility model relates to a powder coating production technical field, concretely relates to coating grinds machine.

Background

The powder coating is a solid powder synthetic resin coating composed of solid resin, pigment, filler, auxiliary agent and the like.

Powder coating production process generally relates to mixing, extrudes, preforming, crocus and packaging process, and the milling equipment among the prior art generally includes milling equipment, cyclone and tails processing apparatus, and the processing procedure generally includes throws material, grinding, separation process, and its production finished product in-process is directly got rid of the coating powder that the particle diameter is undersize or too big directly to be discarded, the serious raw materials of wasting.

Disclosure of Invention

The utility model aims at providing a coating powder vertical grinder that utilization ratio of raw materials is high not enough to prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a coating powder vertical grinder of high usage, includes hopper, feeder, grinding machine, first separator, dust collector, second separator, feed back pipe and collecting box, the feeder is ground into powder in carrying the grinding machine with raw materials in the hopper, the grinding machine discharge gate passes through the pipeline and is connected with first separator pan feeding mouth, first separator has two discharge gates that communicate dust collector pan feeding mouth and second separator pan feeding mouth respectively, is arranged in separating superfine powder to dust collector and carrying remaining powder to the second separator respectively, the second separator has two exports that communicate feed back pipe and collecting box respectively, the feed back pipe is arranged in sending the bold powder back to the hopper.

Furthermore, the material conveyor is a negative pressure feeding device and comprises a material conveying pipe and a negative pressure fan, wherein the two ends of the material conveying pipe are respectively connected with a discharge port at the bottom of the hopper and a feeding port of the grinding machine, and the negative pressure fan is installed on the material conveying pipe.

Furthermore, a tapered and contracted throat part is arranged on the material conveying pipe, a negative pressure air inlet is formed in the material conveying pipe and located on one side of the tail end of the throat part, and an air outlet end of the negative pressure fan is connected with an air guide sleeve covering the negative pressure air inlet.

Furthermore, a drying machine for drying large powder blocks is connected to the feed back pipe.

Furthermore, the feed back pipe is a conveying pipeline which is obliquely arranged, an opening is formed in the top of the feed back pipe, and a heating lamp is arranged above the opening.

Further, the first separator is a cyclone separator, and the second separator is a horizontal airflow sieve.

Furthermore, the collecting box is arranged under the discharge port of the horizontal airflow sieve, and the inlet of the dust removing device is also connected with a dust suction port positioned above the horizontal airflow sieve.

Furthermore, a discharge port of the grinding machine is provided with a related fan.

Furthermore, the dust removal device is a pulse bag type dust remover.

Further, the feeding port of the first separator is higher than the discharging port of the grinder.

The utility model discloses following beneficial effect has:

the utility model discloses can grind the coating piece into powder to isolate granule volume undersize or too big coating powder, dry the powder of volume too big again and loopback and grind once more, separate, greatly improved utilization ratio of raw materials.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the feeder;

in the figure: 1. a hopper; 2. a material conveyer; 3. a grinder; 4. a first separator; 5. a dust removal device; 6. a second separator; 7. a material return pipe; 8. a collection box; 9. a dryer; 10. shutting off the fan; 21. a delivery pipe; 22. a negative pressure fan; 71. an opening; 81. a dust suction port; 91. a heating lamp; 211. a throat portion; 212. a negative pressure air inlet; 213. an air guide sleeve.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so as to more clearly understand the technical idea claimed in the present invention.

As shown in fig. 1 and 2 the utility model relates to a coating powder vertical grinder of high usage, including hopper 1, feeder 2, grinding machine 3, first separator 4, dust collector 5, second separator 6, feed back pipe 7 and collecting box 8, raw materials are carried to grinding machine 3 internal grinding to the feeder 2 in with hopper 1 to grind into powder, it is connected with first separator 4 pan feeding mouth through the pipeline to grind machine 3 discharge gate, first separator 4 has two discharge gates that communicate 5 pan feeding mouths of dust collector and 6 pan feeding mouths of second separator respectively, is used for separating superfine powder to dust collector 5 respectively and carries remaining powder to in the second separator 6 respectively, second separator 6 has two exports that communicate feed back pipe 7 and collecting box 8 respectively, feed back pipe 7 is arranged in sending back hopper 1 with the bulk powder.

It should be noted that the present invention is provided with a controller for controlling the operation switches of the devices of each part.

When the utility model is used, a worker inputs the paint blocks which are coarsely crushed in advance from the upper part of the hopper 1, the paint blocks are driven by the conveyor 2 to be conveyed to the grinding machine 3 along the pipeline for grinding and crushing, the paint after grinding and crushing forms the paint powder, the paint powder is conveyed to the first separator 4 along the pipeline for separation, the first separator 4 can separate the ultrafine powder from the paint powder, the first separator 4 lifts and conveys the ultrafine powder to the dust removal device 5, the remaining coating powder is fed to a second separator 6 for further separation, the second separator 6 separating the agglomerates and the large powder pieces and feeding them to a return pipe 7, the material return pipe 7 conveys the accumulated lumps and the large powder into the material return hopper 1 for re-separation, and the second separator 6 conveys the remaining powder with qualified particle size into the collecting box 8 for collection, so that the coating powder grinding and separating process is completed.

The utility model discloses can grind into powder with coarse crushing's coating piece automatically to can collect the superfine powder separation of the granule particle diameter undersize that smashes excessive formation, and can loopback the coating powder of not complete crushing or long-pending group and grind again in hopper 1, thereby guaranteed that the coating powder particle diameter is average, qualified, ensured coating powder product quality of production.

In the prior art, a feeding and conveying device of a pulverizer generally adopts a spiral feeding device which is arranged at the bottom of a hopper and conveys a coating block into a feeding pipeline through a propeller driven by a motor, so that the coating is pushed into a grinder through the extrusion effect of the coating block; however, in practical use, the feeding mode easily causes accumulation and blockage in the feeding pipeline to cause conveying failure, and the pipeline needs to be manually knocked to carry out re-feeding; in addition, the extrusion feeding mode of the coating blocks easily causes the coating blocks to be adhered and accumulated, the working conformity of the grinding machine is increased, and the service life of the grinding machine is shortened.

Therefore, the preferable structure of the material conveyor 2 of the utility model is a negative pressure feeding device, which comprises a material conveying pipe 21 and a negative pressure fan 22, wherein the two ends of the material conveying pipe 21 are respectively connected with the discharge port at the bottom of the hopper 1 and the feeding port of the grinding machine 3; the utility model discloses a negative pressure fan 22 air supply arouses the negative pressure, drives coating piece in the conveying pipeline 21 and send towards the machine 3 pay-off of grinding, continuously produces the gas flow in the conveying pipeline 21, can prevent effectively that the material from blockking up, and the gas flow can promote the material transport in the conveying pipeline 21, ensures that the pay-off process can be carried out continuously, has the air cross flow between coating piece and the coating piece, can effectively reduce coating piece bonding agglomeration to can take away the moisture that the coating piece absorbs from the air to a certain extent; the inlet end of the first separator 4 is generally arranged at a high position, and the airflow generated by the negative pressure fan 22 can drive the paint powder after grinding processing to be sent to the first separator 4 after being sent to the grinding machine 3, so that the discharging power of the grinding machine 3 is improved.

It is worth mentioning that the continuous supply of air by the negative pressure fan 22 into the grinding machine 3 also achieves a cooling of the grinding machine 3.

Preferably, as shown in fig. 2, a throat portion 211 which is tapered and contracted is arranged on the material conveying pipe 21, a negative pressure air inlet 212 which is located at one side of the tail end of the throat portion 211 is arranged on the material conveying pipe 21, and an air outlet end of the negative pressure fan 22 is connected with an air guide sleeve 213 which covers the negative pressure air inlet 212; the negative pressure fan 22 generates air flow and enters the material conveying pipe 21 from the negative pressure air inlet 212 along the outer wall of the throat part 211, and according to the venturi effect, negative pressure is generated at the tail end of the throat part 211 to drive the material to be conveyed forwards.

It is worth mentioning that the smaller the opening of the negative pressure air inlet 212 is, the larger the absolute value of the generated negative pressure is, so as to ensure that the air flow has enough power to push the material and prevent the material from escaping from the negative pressure air inlet 212.

Preferably, as shown in fig. 2, the inner wall of the wind guide sleeve 213 has a tapered inner wall for guiding the gas into the negative pressure wind inlet 212.

Preferably, the hopper 1 is a cone-shaped funnel, and the bottom of the funnel is communicated with the material conveying pipe 21.

Preferably, a dryer 9 for drying large powder blocks is connected to the feed back pipe 7; the bulk powder separated from the second separator 6 is mostly water-containing coating material lumps formed by the coating material powder absorbing moisture in the air, and a dryer 9 is provided to dry the moisture in the bulk powder to reduce the water content of the coating material which is again subjected to the grinding separation, otherwise the coating material powder with too high water content may continuously affect the whole separation process.

Preferably, the feed back pipe 7 is a conveying pipe obliquely arranged, the middle top of the conveying pipe is provided with an opening 71, and a heating lamp 91 is arranged above the opening 71; the separated bulk powder slides into the hopper 1 along the obliquely arranged conveying pipeline by self weight, and the heating lamp 91 heats and dries the bulk powder in the sliding process; in addition, the heating lamp 91 can also heat the material return pipe 7, and the evaporation speed of moisture in the bulk powder can be increased by utilizing the contact heat transfer between the material return pipe 7 and the bulk powder.

It is worth mentioning that the heating temperature of the heating lamp 91 is 50-100 ℃, preferably 60 ℃, which can be adjusted by arranging a temperature measuring probe on the pipeline; the melting temperature of the coating is generally above 200 ℃, and the heating temperature of 60 ℃ can ensure the water evaporation speed and prevent the coating from melting.

Preferably, the first separator 4 is a cyclone separator, and the second separator 6 is a horizontal airflow screen; the cyclone separator has an air inlet driving function and can ensure that the coating powder in the grinding machine 3 can be lifted and conveyed to the cyclone separator for separation by matching with the negative pressure fan 22; the airflow sieve is high-precision sieving equipment for sieving fine powder, can intensively convey coating powder meeting the specification into the collecting box 8 for collection, and conveys bulk powder not meeting the specification to the material return pipe 7.

Preferably, the discharge port of the horizontal airflow screen in the prior art is generally positioned right below the equipment, so that the collection box 8 is positioned right below the discharge port of the horizontal airflow screen; when the horizontal airflow screen discharges materials, the powder falls into the collection box 8 and often blows along with dust, the powder diffuses from four sides of a discharge port of the horizontal airflow screen to influence the working environment of a workshop, an inlet of the dust removal device 5 is also connected with a dust suction port 81 positioned right above the horizontal airflow screen, and the dust suction port 81 can absorb the blown dust into the dust removal device 5.

Preferably, the discharge port of the grinder 3 is provided with a related fan 10; the air-lock valve can play a role of conveying materials by depending on a rotary impeller and also plays a role of sealing, air is prevented from being sucked from a discharge port in the pneumatic conveying process, and the materials can be ensured to be smoothly excessive from an outlet of the grinding machine 3 to a pipeline connected with the first separator 4.

Preferably, the dust removing device 5 is a pulse bag type dust remover.

Preferably, the feeding port of the first separator 4 is higher than the discharging port of the grinder 3, which is a requirement of the conventional design of the cyclone separator, and the material at the outlet of the grinder 3 is lifted to the first separator 4 by negative pressure, so that the material conveying speed is stable, and the cyclone separator is ensured to have a proper material amount for stable separation.

Various other changes and modifications may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such changes and modifications should fall within the scope of the present invention.

Claims

1. The utility model provides a coating powder vertical grinder of high usage which characterized in that: comprises a hopper (1), a material conveyor (2), a grinding machine (3), a first separator (4), a dust removal device (5), a second separator (6), a material return pipe (7) and a collection box (8), the material conveyer (2) conveys the raw materials in the hopper (1) to the grinder (3) to be ground into powder, the discharge hole of the grinding machine (3) is connected with the feed hole of the first separator (4) through a pipeline, the first separator (4) is provided with two discharge holes which are respectively communicated with a feed inlet of the dust removing device (5) and a feed inlet of the second separator (6) and are respectively used for separating ultrafine powder into the dust removing device (5) and conveying the rest powder into the second separator (6), the second separator (6) is provided with two outlets which are respectively communicated with the feed back pipe (7) and the collecting box (8), the feed back pipe (7) is used for feeding the large powder back to the hopper (1).

2. The vertical grinder for high-utilization paint powder according to claim 1, wherein: the material conveyor (2) is a negative pressure feeding device and comprises a material conveying pipe (21) and a negative pressure fan (22), wherein the two ends of the material conveying pipe (21) are respectively connected with a discharge hole at the bottom of the hopper (1) and a feeding hole of the grinding machine (3), and the negative pressure fan (22) is installed on the material conveying pipe (21).

3. A high-utilization vertical mill for coating powder according to claim 2, wherein: the air-out device is characterized in that a tapered and contracted throat part (211) is arranged on the conveying pipe (21), a negative pressure air inlet (212) located on one side of the tail end of the throat part (211) is formed in the conveying pipe (21), and an air outlet end of the negative pressure fan (22) is connected with an air guide sleeve (213) covering the negative pressure air inlet (212).

4. The vertical grinder for high-utilization paint powder according to claim 1, wherein: and the material return pipe (7) is connected with a dryer (9) for drying large powder.

5. The vertical grinder for high-utilization paint powder according to claim 4, wherein: the feed back pipe (7) is a conveying pipeline which is obliquely arranged, an opening (71) is formed in the top of the feed back pipe, and a heating lamp (91) is arranged above the opening (71).

6. The vertical grinder for high-utilization paint powder according to claim 1, wherein: the first separator (4) is a cyclone separator, and the second separator (6) is a horizontal airflow sieve.

7. The vertical grinder for high-utilization paint powder according to claim 6, wherein: the collecting box (8) is arranged under the discharge port of the horizontal airflow screen, and the inlet of the dust removing device (5) is also connected with a dust suction port (81) positioned above the horizontal airflow screen.

8. A high-utilization coating powder vertical mill according to any one of claims 1 to 7, wherein: and a discharge hole of the grinding machine (3) is provided with a wind closing machine (10).

9. A high-utilization coating powder vertical mill according to any one of claims 1 to 7, wherein: the dust removal device (5) is a pulse bag type dust remover.

10. A high-utilization coating powder vertical mill according to any one of claims 1 to 7, wherein: the feeding port of the first separator (4) is higher than the discharging port of the grinder (3).