CN215447303U

CN215447303U - Emery wheel net piece grey cloth drying device

Info

Publication number: CN215447303U
Application number: CN202121213431.8U
Authority: CN
Inventors: 陈晓敏
Original assignee: Zhengzhou Tongzheng Abrasive Tools Co ltd
Current assignee: Zhengzhou Tongzheng Abrasive Tools Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-01-07
Anticipated expiration: 2031-06-02

Abstract

The utility model relates to the technical field of grey cloth drying of grinding wheel meshes, in particular to a grey cloth drying device for the grinding wheel meshes, which comprises a drying chamber, wherein the drying chamber is sequentially divided into a preheating chamber, a heating chamber and a cooling chamber by a partition plate; a heat-conducting roller and a reversing roller which are positioned in a preheating chamber, a first cloth-guiding roller and a second cloth-guiding roller which are positioned in a heating chamber, and a cooling roller which is positioned in a cooling chamber are arranged in a drying chamber, an air supply pipe is arranged in the heating chamber, the air supply pipe is communicated with a plurality of heating pipes, a blower is arranged at the bottom of the heating chamber, a heating plate is arranged in the heating chamber, and a cloth-collecting roller is arranged outside the cooling chamber; the top parts of the preheating chamber and the heating chamber are respectively provided with an air outlet which is connected with a waste gas treatment device. The utility model has the advantages of uniform drying, convenient rolling and high drying efficiency.

Description

Emery wheel net piece grey cloth drying device

Technical Field

The utility model relates to the technical field of grey cloth drying of grinding wheel meshes, in particular to a grey cloth drying device for the grinding wheel meshes.

Background

The grinding wheel net piece is formed by punching a grinding wheel net piece grey cloth, and the cutting adopts a one-step punching forming process of an outer diameter and an inner hole. Therefore, the net piece has the advantages of small dimensional tolerance, good concentricity, smooth periphery and the like. The grey cloth of the grinding wheel mesh is formed by coating glass fiber reinforced grey cloth with phenolic aldehyde and epoxy modified resin and drying. Therefore, the drying process is an essential process for producing the grinding wheel mesh.

At present, the grey cloth of the grinding wheel mesh is mostly dried by hot air, and the defects are as follows: 1. hot air is directly blown to the glass fiber cloth coated with the resin layer, the hot air easily blows away the resin which is not solidified on the glass fiber cloth, so that the resin layer on the glass fiber cloth becomes thin, and when the air volume is large, the resin layer on the glass fiber cloth is easily sunken and deformed, and the quality of grey cloth is influenced; 2. the whole oven is heated by hot air, so that heat is wasted, and the grey cloth close to the hot air is heated in advance, so that uneven drying is caused; 3. the heat is easy to accumulate in the dryer, water vapor is not easy to discharge, the drying effect is influenced, and the drying efficiency is lower; 4. the dried fabric is directly rolled up, so that the grey fabric is bonded, and the quality of the screen cloth is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of low grey cloth quality, heat waste, uneven drying and low drying efficiency of a grey cloth drying device for grinding wheel meshes in the prior art.

The specific scheme of the utility model is as follows:

the grey cloth drying device for the grinding wheel mesh comprises a drying chamber, wherein the drying chamber is sequentially divided into a preheating chamber, a heating chamber and a cooling chamber by partition plates, a cloth inlet is formed above the side wall of the preheating chamber, an air outlet, a cloth outlet and an air inlet are sequentially formed in the side wall of the cooling chamber from top to bottom, an exhaust fan is arranged in the air outlet, and openings for grey cloth to pass through are respectively formed in the partition plates;

the drying chamber is sequentially provided with a heat guide roller and a reversing roller which are positioned in the preheating chamber, a first cloth guide roller and a second cloth guide roller which are positioned in the heating chamber, and a cooling roller which is positioned in the cooling chamber along the conveying direction of the gray fabric, wherein the heat guide roller is arranged corresponding to the cloth inlet, the reversing roller is positioned below the side of the heat guide roller, the second cloth guide roller and the second cooling roller are positioned at the same horizontal height, and the reversing roller, the first cloth guide roller and the first cooling roller are positioned at the same horizontal height;

an air supply pipe is transversely arranged on one side of the bottom in the heating chamber, the air supply pipe is communicated with a plurality of uniformly distributed heating pipes, the heating pipes are perpendicular to the air supply pipe, heat dissipation holes are formed in the pipe walls of the heating pipes, a blower is arranged at the bottom of the heating chamber, an air inlet of the air supply pipe is connected with an air outlet of the blower, heating plates are arranged on two sides of a center line between the first cloth guide roller and the second cloth guide roller, the heating plates are arranged in parallel with grey cloth, and a cloth collecting roller is arranged on the outer side of the cooling chamber;

and the tops of the preheating chamber and the heating chamber are respectively provided with gas outlets close to each other, and the gas outlets are connected with a waste gas treatment device.

Preferably, a press roll is arranged directly above the last second cloth guide roll.

Preferably, an electric heating wire is arranged in the heat conducting roller.

Preferably, drying boxes are respectively arranged between the heating pipe and the first cloth guide roller on the partition board in the heating chamber, and drying agents are arranged in the drying boxes.

Preferably, a filter screen is arranged in the air inlet.

The utility model has the beneficial effects that:

1. the utility model divides the drying chamber into a preheating chamber, a heating chamber and a cooling chamber, the prior heat-conducting roller is used for preheating, hot air in the heating chamber can be prevented from being directly blown to the grey cloth, thereby preventing the resin layer on the grey cloth from sinking and deforming, an exhaust fan and an air inlet arranged in the cooling chamber can lead external cold air to enter the cooling chamber from the air inlet and be exhausted out of the cooling chamber by the exhaust fan, thereby accelerating the rapid heat dissipation of the grey cloth in the cooling chamber, having the drying function while cooling, and always keeping the grey cloth on the cloth-receiving roller in a dry state to prevent bonding.

2. According to the utility model, the heating coils are arranged on two sides of the central line between the first cloth guide roller and the second cloth guide roller in the heating chamber, and the heating coils are arranged in parallel with the gray fabric, so that the gray fabric far away from the heating pipe in the heating chamber can be rapidly heated, the drying time is shortened, the gray fabric is uniformly dried, and the heat loss can be reduced.

3. According to the utility model, the drying box is arranged between the heating pipe and the first cloth guide roller, moisture generated during heating of the grey cloth can be absorbed by the drying agent in the drying box, secondary water absorption is avoided, water vapor generated during heating can be discharged from the air outlet, and in addition, in order to avoid direct discharge of harmful gas, a waste gas treatment device is connected at the air outlet, and the treated waste gas is discharged into the atmosphere, so that the pollution is reduced.

Drawings

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

FIG. 2 is a schematic view showing a connection structure of a heating duct and an air supply duct;

the reference numbers in the figures are: 1 preheating chamber, 2 heating chambers, 3 cooling chambers, 4 grey fabrics, 5 heat-conducting rollers, 6 reversing rollers, 7 air outlets, 8 waste gas treatment devices, 9 first cloth-guiding rollers, 10 heating plates, 11 squeezing rollers, 12 first cloth-guiding rollers, 13 heating pipes, 14 heat dissipation holes, 15 air blowers, 16 first cooling rollers, 17 second cooling rollers, 18 air outlets, 19 exhaust fans, 20 cloth-receiving rollers, 21 air inlets, 22 cloth inlets, 23 openings, 24 cloth outlets, 25 partition plates, 26 filter screens, 27 air supply pipes and 28 drying boxes.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example 1

A grey cloth drying device for grinding wheel meshes comprises a drying chamber, as shown in figures 1 to 2, the drying chamber is sequentially divided into a preheating chamber 1, a heating chamber 2 and a cooling chamber 3 by a partition plate 25, a cloth inlet 22 is arranged above the side wall of the preheating chamber 1, an exhaust port 18, a cloth outlet 24 and an air inlet 21 are sequentially arranged on the side wall of the cooling chamber 3 from top to bottom, an exhaust fan 19 is arranged in the exhaust port 18, and openings 23 for passing grey cloth 4 are respectively arranged on the partition plate 25;

a heat conduction roller 5 and a reversing roller 6 which are positioned in a preheating chamber 1, a first cloth guide roller 12 and a second cloth guide roller 9 which are positioned in a heating chamber 2, and a cooling roller which is positioned in a cooling chamber 3 are sequentially arranged in the drying chamber along the conveying direction of a gray fabric 4, the heat conduction roller 5 is arranged corresponding to a fabric inlet 22, the reversing roller 6 is positioned below the side of the heat conduction roller 5, the second cloth guide roller 9 and the second cooling roller 17 are positioned at the same horizontal height, and the reversing roller 6, the first cloth guide roller 12 and the first cooling roller 16 are positioned at the same horizontal height.

An air supply pipe 27 is transversely arranged on one side of the bottom in the heating chamber 2, the air supply pipe 27 is communicated with a plurality of heating pipes 13 which are uniformly distributed, the heating pipes 13 are vertically arranged with the air supply pipe 27, heat dissipation holes 14 are arranged on the pipe walls of the heating pipes 13, a blower 15 is arranged at the bottom of the heating chamber 2, an air inlet of the air supply pipe 27 is connected with an air outlet of the blower 15, heating plates 10 are arranged on two sides of a central line between a first cloth guide roller 12 and a second cloth guide roller 9, the heating plates 10 are arranged in parallel with the grey cloth 4, and a cloth collecting roller 20 is arranged on the outer side of the cooling chamber 3;

the top parts of the preheating chamber 1 and the heating chamber 2 are respectively provided with an air outlet 7 which are close to each other, and the air outlet 7 is connected with a waste gas device 8.

A squeeze roller 11 is provided just above the last second guide roller 9, and the squeeze roller 11 prevents the raw fabric 4 from being curled.

An electric heating wire is arranged in the heat conducting roller 5.

Drying boxes 28 are respectively arranged between the heating pipe 13 and the first cloth guide roller 12 on the partition plate 25 in the heating chamber 2, drying agents are arranged in the drying boxes 28, and moisture generated when the gray fabric 4 is heated can be absorbed by the drying agents in the drying boxes 28, so that secondary water absorption is avoided.

A filter screen 26 is provided in the air inlet 21 to prevent foreign dust from entering the cooling chamber 3.

The working mode of the utility model is as follows: when in use, firstly, the gray fabric 4 enters from the fabric inlet 22 of the preheating chamber 1 to cover the heat conducting roller 5, the heat conducting roller 5 preheats the gray fabric 4 preliminarily to shape the resin layer on the gray fabric 4 in advance, thereby preventing the hot air from blowing the gray fabric 4 to cause the resin layer to generate concave deformation, then the reversing roller 6 carries out surface change on the gray fabric 4, the gray fabric is conveyed to the heating chamber 2, the air blower 15 is started, the hot air of the heating pipe 13 is blown to the gray fabric 4 through the heat dissipation holes 14 to dry, in order to reduce heat waste, reduce energy consumption and prevent the problem of uneven drying caused by the early heating of the gray fabric 4 close to the heating pipe 13, the heating plates 10 are arranged in parallel at two sides of the gray fabric 4 between the first cloth guide roller 12 and the second cloth guide roller 9 to heat the two sides of the gray fabric 4, so that the gray fabric 4 far away from the heating pipe 13 can be heated rapidly, improve the heating uniformity of the gray fabric 4 and shorten the heating time, thereby reducing the waste of heat, meanwhile, as the material coated on the grey cloth 4 can generate certain harmful gas during drying, in order to avoid the harmful gas from being directly exhausted to the atmosphere, the exhaust gas device 8 is arranged at the gas outlet 7 and is exhausted to the atmosphere after being processed, so that the pollution to the environment is reduced, then the grey cloth 4 is extruded by the extrusion roller 11, the curling is prevented, and the grey cloth is transmitted to the cooling roller of the cooling chamber 3, the dried grey cloth 4 has certain heat and is not suitable for being directly wound, at the moment, the exhaust fan 19 of the gas outlet 18 is started, cold gas enters from the gas inlet 21, the hot gas in the cooling chamber 3 is rapidly exhausted by the exhaust fan 19, cold air drying can be realized by the cooling party, the cooled and dried grey cloth 4 is wound by the cloth collecting roller 20 through the cloth outlet 24, and the grey cloth 4 on the cloth collecting roller 20 is always in a dry state.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that certain features may be replaced by equivalents thereof; any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The grey cloth drying device for the grinding wheel mesh is characterized by comprising a drying chamber, wherein the drying chamber is sequentially divided into a preheating chamber (1), a heating chamber (2) and a cooling chamber (3) by a partition plate (25), a cloth inlet (22) is formed above the side wall of the preheating chamber (1), an exhaust port (18), a cloth outlet (24) and an air inlet (21) are sequentially formed in the side wall of the cooling chamber (3) from top to bottom, an exhaust fan (19) is arranged in the exhaust port (18), and openings (23) for the grey cloth (4) to pass through are respectively formed in the partition plate (25);

a heat-conducting roller (5) and a reversing roller (6) which are positioned in a preheating chamber (1), a first cloth-guiding roller (12) and a second cloth-guiding roller (9) which are positioned in a heating chamber (2), and a cooling roller which is positioned in a cooling chamber (3) are sequentially arranged in the drying chamber along the conveying direction of the grey cloth (4), the heat-conducting roller (5) and a cloth inlet (22) are correspondingly arranged, the reversing roller (6) is positioned below the side of the heat-conducting roller (5), the second cloth-guiding roller (9) and the second cooling roller (17) are positioned at the same horizontal height, and the reversing roller (6), the first cloth-guiding roller (12) and the first cooling roller (16) are positioned at the same horizontal height;

an air supply pipe (27) is transversely arranged on one side of the bottom in the heating chamber (2), the air supply pipe (27) is communicated with a plurality of uniformly distributed heating pipes (13), the heating pipes (13) are vertically arranged with the air supply pipe (27), heat dissipation holes (14) are formed in the pipe wall of each heating pipe (13), an air blower (15) is arranged at the bottom of the heating chamber (2), an air inlet of the air supply pipe (27) is connected with an air outlet of the air blower (15), heating plates (10) are arranged on two sides of a center line between the first cloth guide roller (12) and the second cloth guide roller (9), the heating plates (10) are arranged in parallel with the grey cloth (4), and a cloth collecting roller (20) is arranged on the outer side of the cooling chamber (3);

and gas outlets (7) which are close to each other are respectively arranged at the tops of the preheating chamber (1) and the heating chamber (2), and the gas outlets (7) are connected with a waste gas treatment device (8).

2. The apparatus for drying a gray fabric of abrasive mesh sheets according to claim 1, wherein: a squeezing roller (11) is arranged right above the last second cloth guide roller (9).

3. The apparatus for drying a gray fabric of abrasive mesh sheets according to claim 1, wherein: an electric heating wire is arranged in the heat-conducting roller (5).

4. The apparatus for drying a gray fabric of abrasive mesh sheets according to claim 1, wherein: drying boxes (28) are respectively arranged between the heating pipe (13) and the first cloth guide roller (12) on the partition plate (25) in the heating chamber (2), and drying agents are arranged in the drying boxes (28).

5. The apparatus for drying a gray fabric of abrasive mesh sheets according to claim 1, wherein: a filter screen (26) is arranged in the air inlet (21).