CN216885115U - Multistage feeding inorganic matter flat double-extruder - Google Patents

Abstract

A multi-stage feeding inorganic matter flat double extruder realizes that inorganic gelled materials, especially sulphoaluminate cement, gypsum and the like, and fast hardening inorganic gelled materials (inorganic fillers in non-plastics or resin) are stirred, plasticized and extruded to be formed on the same equipment at one time, realizes that materials are not temporarily stored, and ensures first-in first-out. The dry cleaning equipment for the powder cleaning material is realized, and no waste water is generated.

Description

Multistage feeding inorganic matter flat double-extruder

Technical Field

Inorganic gelling materials such as: the forming process of cement, gypsum, lime, magnesite, clay and other products includes semi-dry mold pressing, grouting mold vibrating and plasticizing extrusion, and three steps. The inorganic substance plasticizing extrusion method die orifice forming process is a cross-industry transplanting technology from the plastic industry, and has a plurality of advancement such as: the method can be used for flow production, and has the advantages of high yield, less labor, good product appearance and high automation degree. But the application time is short, the technical gap of the industry exists in the technical field, the mutual permeation is insufficient, and the problems of not wide application and insufficient maturity exist in the technology, process and equipment at present.

Background

At present, the plasticizing extrusion molding process of inorganic substances is most applied and the most mature process is the water flowing brick making process by an extrusion method, mature complete equipment and matched technical training materials exist in China, and the process is divided into two sections, namely a stirring and mixing section and a plasticizing extrusion section. A flat double stirrer is used in the stirring and mixing section, and the premixed powder material and the premixed liquid material are mixed into dispersed wet materials according to a proportion; and in the plasticizing extrusion section, a single-screw extruder and a double-screw extruder are used for plasticizing and extruding the dispersed wet material. The process can be understood as a two-stage process of twin-screw mixing and single-or twin-screw extrusion, and a plant developed according to this process. The silicate product is prepared through three steps of dispersing, mixing and plasticizing, extruding to form, mixing the powder material, fiber material and liquid material in a multi-shaft high speed rotating disperser to form homogeneous wet bulk material, and mixing the homogeneous wet bulk material in a single or double screw extruder or kneading mixer to form plastic material, and cutting or pelletizing. Finally, the block or granular plastic material is extruded and molded by a single-screw extruder and a double-screw extruder through a die orifice in an extrusion molding section. The process is understood to be a three-stage process of mixing, plasticizing, extruding that can be integrated into a similar three-stage apparatus. The above-described hierarchical apparatus has two major drawbacks. 1. The staged equipment must have a temporary storage area for raw materials between stages, so that the rapid hardening inorganic gelled materials of sulphoaluminates and gypsum cannot be first in and first out, and cannot be stably used for a long time. Of course, adjustments may be made to the recipe or equipment, such as: the methods of increasing retarding or reducing temporary storage volume, etc. can not achieve complete first-in first-out, so it is also a temporary solution and not a permanent solution. 2. The original design of the staged equipment is cleaned by water. When the environmental protection requirement is strict, the water cleaning means pollution discharge. The above-mentioned staged equipment is difficult to implement by using renewable powder cleaning materials for dry cleaning. If the ordinary flat-double can be used, the steps can not be separated, and the mixing, plasticizing and extrusion molding can be completed on the same equipment at one time. The powder cleaning agent is not cached, so that first-in first-out can be realized, and the powder cleaning agent can be used for cleaning in a non-grading manner. A perfect solution seems. But in practice it is troublesome. First, the twin screw extruder throughput was less than half of the design, and second, the screw life was less than 1/10 of the design life in the liquid feed section. The problem of dispersing powder and liquid materials into bulk wet materials on a dispersion machine is solved. The reason is that the liquid material is absorbed by the powder material at the liquid material feeding port, the powder material is bonded into a blocky hard object with dry inside and wet outside, great torque resistance is generated near the liquid material feeding port, the powder material at the rear part is prevented from being pushed, a screw sleeve around the liquid material feeding port is hot, the noise of the extruder is greatly increased, and feeding is difficult. The problems of insufficient yield and serious abrasion of the screw sleeve are caused. For multi-stage equipment, powder materials and liquid materials are mixed through a front stage and become dispersed wet materials, and the equipment for mixing by double screws and the like normally works, so that the problems do not occur. The problem can not be solved by replacing various screw modules in the position, such as mixing, dispersing and the like.

SUMMERY OF THE UTILITY MODEL

A multi-stage feeding inorganic matter flat double extruder aims at the plasticizing extrusion method die orifice forming process of inorganic gelled materials, especially sulphoaluminate cement, gypsum and the like, fast hardening inorganic gelled materials, realizes the dispersion, mixing, plasticizing and extrusion forming, and is completed on the same equipment at one time. The temporary storage of materials is avoided, and first-in first-out is ensured. The dry cleaning equipment for the powder cleaning material is realized, and no waste water is generated.

A multi-stage feeding inorganic matter flat double extruder is characterized in that premixed inorganic gel materials, namely powder materials, are added into a flat double extruder screw sleeve in different positions in a grading manner, a first stage is added with a first part of powder materials and all liquid materials added at one time, the mixture is stirred and dispersed into thin slurry, a second stage is added into the thin slurry again, a second part of powder materials is stirred and dispersed into relatively viscous slurry, and all or a third part of powder materials are added again and stirred and dispersed into plasticized materials. Since the number of feeding stages is related to the screw length-diameter ratio, it is impossible to infinitely large. The result of this is that the torque resistance at the mixing position of the powder and the liquid material is dispersed, the screw is smooth, the design production capacity of the double-screw extruder is achieved, the service life of the screw is prolonged, and the function of multi-stage equipment is realized on single-stage equipment. The first-stage powder material and the dilute slurry formed by all liquid materials are used as carriers, the powder materials are added step by step and are matched with the screw module to achieve plasticization, multi-stage equipment is dispersed into wet powder materials, and then the wet powder materials have the same plasticizing function, and belong to the same industry of different cranks. The inorganic cementing material is dispersed, mixed, plasticized and extruded on a single device. The method practically realizes the first-in first-out of the raw materials, realizes the production of the quick-hardening inorganic gelled materials such as the sulphoaluminate cement, the gypsum and the like by the die orifice forming process of the extrusion method and the long-term and stable industrial products. Can dry clean equipment by using powder cleaning materials, and ensures that no wastewater is produced in the production link.

Drawings

FIG. 1 schematic diagram of multi-stage feeding inorganic matter horizontal twin extruder

Reference numbers in the figures: the extruder 1 comprises a motor, a speed reducer 2, a power distributor 3, 4 twin screws, a frame 5, a screw sleeve 6 (8 units, 6.1-6.8), a dosing pump 7, a liquid material inlet 8, a feeder 9 (6 units, 9.1-9.6), a universal feeding port 10 (4 units, 10.1-10.4) and an extrusion die port 11.

It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the utility model.

Detailed Description

A multi-stage feeding inorganic matter horizontal double-extruder is disclosed, referring to figure 1, and comprises a motor (1), a speed reducer (2), a power distributor (3), a double screw (4), a frame (5) and a plurality of screw sleeves (6) connected by bolts; wherein a first screw sleeve (6.1) close to the power distributor (3) is provided with a first feeding port (10.1), and a first-stage feeder (9.1) and a cleaning material feeder (9.2) are arranged on the first feeding port (10.1); a liquid material inlet (8) is arranged at the bottom of the second screw sleeve (6.2) close to the power distributor (3), and the liquid material inlet (8) is connected with a dosing pump (7) through a pipeline to feed liquid materials; a second feeding port (10.2) is arranged on a third threaded sleeve (6.3) close to the power distributor (3), and a second-stage feeder (9.3) is arranged on the second feeding port (10.2); a third feeding port (10.3) is arranged on a fourth threaded sleeve (6.4) close to the power distributor (3), and a third-stage feeder (9.4) is arranged on the third feeding port (10.3); a fourth feeding port (10.4) is arranged on a fifth screw sleeve (6.5) close to the power distributor (3), and a fourth-stage feeder (9.5) is arranged on the fourth feeding port (10.4); a forced fiber feeder (9.6) is arranged on the side surface of the third screw sleeve (6.6) close to the die orifice, and the forced fiber feeder (9.6) is connected with the screw sleeve; the rest feeding machines are arranged on the frame (5) and are connected with the frame (5) into a whole.

Claims (1)

1. A multi-stage feeding inorganic matter flat double extruder is characterized in that: the extruder is cooled only and is not heated, and comprises a motor (1), a speed reducer (2), a power distributor (3), a double screw (4), a rack (5) and a plurality of screw sleeves (6) connected with bolts; wherein a first screw sleeve (6.1) close to the power distributor (3) is provided with a first feeding port (10.1), and a first-stage feeder (9.1) and a cleaning material feeder (9.2) are arranged on the first feeding port (10.1); a liquid material inlet (8) is arranged at the bottom of the second screw sleeve (6.2) close to the power distributor (3), and the liquid material inlet (8) is connected with a dosing pump (7) through a pipeline to feed liquid materials; a second feeding port (10.2) is arranged on a third threaded sleeve (6.3) close to the power distributor (3), and a second-stage feeder (9.3) is arranged on the second feeding port (10.2); a third feeding port (10.3) is arranged on a fourth threaded sleeve (6.4) close to the power distributor (3), and a third-stage feeder (9.4) is arranged on the third feeding port (10.3); a fourth feeding port (10.4) is arranged on a fifth screw sleeve (6.5) close to the power distributor (3), and a fourth-stage feeder (9.5) is arranged on the fourth feeding port (10.4); a forced fiber feeder (9.6) is arranged on the side surface of the third screw sleeve (6.6) close to the die orifice, and the forced fiber feeder (9.6) is connected with the screw sleeve; the rest feeding machines are arranged on the frame (5) and are connected with the frame (5) into a whole.

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