阅读说明：本技术 一种回收橡胶颗粒的多层熔融炉 (Multilayer melting furnace for recycling rubber particles ) 是由 张训龙 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种回收橡胶颗粒的多层熔融炉,包括熔炉本体,熔炉本体底设高温加热板,熔炉本体自下而上设细孔筛网、中孔筛网及大孔筛网,筛网夹层设中温加热棒；高温加热板与细孔筛网之间设溢流挤出管,溢流挤出管正下方设冷却槽；熔炉本体顶设加料斗和加压管,加压管连接泵机及氮气罐。本发明将过滤预热与熔融相结合,将橡胶原料颗粒按照粒径大小,依次进行预热和加热熔融,较大的粒径提供较多次数的中温预热,提高大颗粒胶粒的熔融效率,避免大颗粒胶粒还未熔融就被挤出熔炉本体外。(The invention discloses a multilayer melting furnace for recovering rubber particles, which comprises a melting furnace body, wherein a high-temperature heating plate is arranged at the bottom of the melting furnace body, a fine mesh screen, a middle-hole screen and a large-hole screen are arranged on the melting furnace body from bottom to top, and a middle-temperature heating rod is arranged in the interlayer of the screens; an overflow extrusion pipe is arranged between the high-temperature heating plate and the fine-hole screen, and a cooling tank is arranged right below the overflow extrusion pipe; the top of the smelting furnace body is provided with a charging hopper and a pressure pipe, and the pressure pipe is connected with a pump and a nitrogen tank. According to the invention, filtering preheating and melting are combined, rubber raw material particles are sequentially preheated and heated for melting according to the particle size, larger particle size provides more times of medium-temperature preheating, the melting efficiency of large particle colloidal particles is improved, and the large particle colloidal particles are prevented from being extruded out of a melting furnace body without being melted.)

1. A multilayer melting furnace for recovering rubber particles comprises a melting furnace body (1) and is characterized in that a high-temperature heating plate (2) is laid at the bottom of the melting furnace body (1), a fine mesh (3), a medium-pore mesh (4) and a large-pore mesh (5) are symmetrically arranged on the inner wall of the melting furnace body (1) in an equidistant mode from bottom to top in sequence, the fine mesh (3), the medium-pore mesh (4) and the large-pore mesh (5) are of double-layer net structures, and medium-temperature heating rods (6) are arranged in interlayers of the fine mesh (3), the medium-pore mesh (4) and the large-pore mesh (5) respectively;

an overflow extrusion pipe (7) is arranged between the high-temperature heating plate (2) and the fine-hole screen (3), one end of the overflow extrusion pipe (7) extends out of the furnace body (1) and has a downward opening, and a cooling tank (8) is arranged right below an outlet at the bottom end of the overflow extrusion pipe (7);

the top of smelting pot body (1) is provided with loading hopper (9) and forcing pipe (10), forcing pipe (10) are connected with pump (11), pump (11) are connected with nitrogen gas jar (13) through trachea (12).

2. A multi-layer melting furnace for recycling rubber particles as claimed in claim 1, wherein the heating temperature of said high temperature heating plate (2) is 180-230 ℃.

3. A multilayer melting furnace for recycling rubber particles as claimed in claim 1, wherein the heating temperature of said medium temperature heating rod (6) is 150-180 ℃.

4. A multilayer melting furnace for recycling rubber granules according to claim 1, characterized in that said cooling tank (8) is in particular an air-cooled stainless steel tank.

5. A multi-layer melting furnace for recycling rubber particles as in claim 1, wherein said fine (3), medium (4) and large (5) screens have a ratio of mesh opening to diameter of 1: 2: 4.

Technical Field

The invention relates to the technical field of rubber particle recovery, in particular to a multilayer melting furnace for recovering rubber particles.

Background

The recovery of rubber raw materials is an important technical index for examining a rubber production workshop, so that a waste rubber recovery production line is prepared in general rubber processing plants, rubber auxiliary agent (such as zinc oxide, vulcanizing agent, swelling agent and the like) production workshops and even tire factories, which is a new requirement of modern green and environment-friendly production standards.

The existing rubber recovery process mainly comprises the following steps: classifying, removing non-rubber components, washing, removing sludge and sandy soil, crushing to obtain rubber powder, and melting and molding. In the melting process, because the rubber powder has different particle sizes, the heating and melting time and temperature are different, and certain operation difficulty is caused for heating of the melting furnace. If overheated, easy coking; if the temperature is lower, the requirement of the molten product cannot be met.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a multilayer melting furnace for recycling rubber particles.

In order to achieve the purpose, the invention adopts the following technical scheme:

a multilayer melting furnace for recovering rubber particles comprises a melting furnace body, wherein a high-temperature heating plate is laid at the bottom of the melting furnace body, a fine mesh screen, a medium-pore screen and a large-pore screen are symmetrically arranged on the inner wall of the melting furnace body at equal intervals in sequence from bottom to top, the fine mesh screen, the medium-pore screen and the large-pore screen are all of double-layer mesh structures, and intermediate-temperature heating rods are respectively arranged in interlayers of the fine mesh screen, the medium-pore screen and the large-pore screen;

an overflow extrusion pipe is arranged between the high-temperature heating plate and the fine-hole screen, one end of the overflow extrusion pipe extends out of the smelting furnace body, an opening of the overflow extrusion pipe faces downwards, and a cooling tank is arranged right below an outlet at the bottom end of the overflow extrusion pipe;

the top of smelting pot body is provided with loading hopper and forcing pipe, and the forcing pipe is connected with the pump machine, and the pump machine is connected with the nitrogen gas jar through the trachea.

Preferably, the heating temperature of the high temperature heating plate is 180-.

Preferably, the heating temperature of the medium-temperature heating rod is 150-180 ℃.

Preferably, the cooling tank is in particular an air-cooled stainless steel tank.

Preferably, the fine, medium and large mesh screens have a mesh opening ratio of 1: 2: 4.

compared with the prior art, the invention has the beneficial effects that:

according to the invention, rubber raw material particles are sequentially preheated and heated according to the particle size, and colloidal particles with fine particle sizes are preferentially filtered to reach a high-temperature heating plate for heating and melting; filtering colloidal particles with larger particle size on a fine mesh screen for primary preheating, and then rolling the colloidal particles onto a high-temperature heating plate for heating and melting; filtering colloidal particles with larger particle size into a mesoporous screen, carrying out secondary preheating, and then rolling the colloidal particles onto a high-temperature heating plate for heating and melting; filtering the colloidal particles with the maximum particle size into a macroporous screen, preheating for three times, and rolling the colloidal particles onto a high-temperature heating plate for heating and melting.

Thereby according to the particle size, the middle temperature that more number of times was provided to great particle size preheats, improves the melting efficiency of large granule micelle, avoids the large granule micelle not yet melt just by extruding this external by the smelting pot.

Drawings

FIG. 1 is a schematic view of a multi-layer melting furnace for recycling rubber particles according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, the multilayer melting furnace for recovering rubber particles comprises a melting furnace body 1, wherein a high-temperature heating plate 2 is laid at the bottom of the melting furnace body 1, a fine mesh 3, a medium-pore mesh 4 and a large-pore mesh 5 are symmetrically arranged on the inner wall of the melting furnace body 1 at equal intervals from bottom to top in sequence, the fine mesh 3, the medium-pore mesh 4 and the large-pore mesh 5 are all of double-layer mesh structures, and intermediate-temperature heating rods 6 are respectively arranged in interlayers of the fine mesh 3, the medium-pore mesh 4 and the large-pore mesh 5; an overflow extrusion pipe 7 is arranged between the high-temperature heating plate 2 and the fine-hole screen 3, one end of the overflow extrusion pipe 7 extends out of the smelting furnace body 1, the opening of the overflow extrusion pipe is downward, and a cooling tank 8 is arranged right below the outlet at the bottom end of the overflow extrusion pipe 7; the top of the smelting furnace body 1 is provided with a charging hopper 9 and a pressure pipe 10, the pressure pipe 10 is connected with a pump 11, and the pump 11 is connected with a nitrogen tank 13 through a gas pipe 12.

Referring to fig. 1, the heating temperature of the high temperature heating plate 2 is 200 ℃, which ensures the complete melting of the common rubber.

Referring to fig. 1, the medium-temperature heating rod 6 is heated at 160 ℃ to preheat the rubber.

Referring to fig. 1, the cooling bath 8 is specifically an air-cooled stainless steel bath.

Referring to fig. 1, the fine mesh 3, the medium mesh 4 and the large mesh 5 have a mesh diameter ratio of 1: 2: 4, aiming at the colloidal particles with different particle diameters, the colloidal particles with larger particles can not be filtered and can only fall off from the gap between the screens, so that the heating time is prolonged.

The working process of the invention is as follows: according to the invention, rubber raw material particles are sequentially preheated and heated according to the particle size, and colloidal particles with fine particle size are preferentially filtered to reach a high-temperature heating plate 2 for heating and melting; filtering colloidal particles with larger particle size on a fine mesh 3 for primary preheating, and then rolling the colloidal particles onto a high-temperature heating plate 2 for heating and melting; filtering colloidal particles with larger particle size into a mesoporous screen 4, carrying out secondary preheating, and then rolling the colloidal particles onto a high-temperature heating plate 2 for heating and melting; filtering the colloidal particles with the maximum particle size into a macroporous screen 5, carrying out tertiary preheating, and then rolling the colloidal particles onto a high-temperature heating plate 2 for heating and melting.

Thereby according to the particle size, the middle temperature that more number of times was provided to great particle size preheats, improves the melting efficiency of large granule micelle, avoids the large granule micelle not yet melt just by extruding outside the smelting pot body 1.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.