阅读说明：本技术 一种具有热交换功能的高浓溶液或固体物料输送装置 (High-concentration solution or solid material conveying device with heat exchange function ) 是由 张培洲 于 2020-05-14 设计创作，主要内容包括：本发明公开一种具有热交换功能的输送高浓溶液或固体颗粒物料的装置,本发明包括有驱动导叶轴转动的变频电机减速器、壳体、物料入口与出料口、设置于壳体内的螺旋状的输送导叶、及用于固定导叶的轴和用于固定导叶轴的轴承,本发明的装置在其壳体外设置有加热腔,所述的导叶轴与导叶内部均为空腔,导叶轴空腔设置有加热介质输入端与冷却介质输出端分别连通,导叶空腔的起始端与终端分别有通道与导叶轴空腔相互连通。本发明也可以作为一台独立、完整的设备进行高浓溶液或固体流物料的输送同时对物料进行加热或冷却,满足工艺要求,可大大解放生产率,提高工作效率。(The invention discloses a device with heat exchange function for conveying high-concentration solution or solid particle materials, which comprises a variable frequency motor reducer for driving a guide vane shaft to rotate, a shell, a material inlet and a material outlet, a spiral conveying guide vane arranged in the shell, a shaft for fixing the guide vane and a bearing for fixing the guide vane shaft. The invention can also be used as an independent and complete device for conveying high-concentration solution or solid flow materials and heating or cooling the materials at the same time, meets the process requirements, can greatly liberate the production rate and improve the working efficiency.)

1. A high consistency solution or solid material transfer apparatus having a heat exchange function, comprising: the casing sets up material entry and discharge gate on the casing, sets up the spiral helicine delivery guide vane in the casing, the axle of stator, and be used for the bearing of fixed guide vane axle, its characterized in that the casing be provided with the heating chamber outward, guide vane axle and stator inside be the cavity, the initiating terminal and the terminal of stator cavity have passageway and guide vane axle cavity to communicate with each other respectively, the heating medium input of guide vane axle cavity and the medium output after the cooling respectively with the medium conveyer pipe and the medium output tube after the cooling intercommunication.

2. The conveying device for high concentration solution or solid material with heat exchange function as claimed in claim 1, wherein the guide vane shaft is driven by a reducer of a variable frequency motor.

Technical Field

The invention relates to a high-concentration solution or solid material conveying device with a heat exchange function, in particular to a conveying device which can convey high-concentration solution and solid particle materials and comprises a shell, a material inlet, a material outlet, a spiral conveying guide vane arranged in the shell, a shaft for fixing the guide vane and a bearing for fixing the guide vane shaft.

Background

Devices for conveying solid particulate materials in industrial production are common devices, and such devices basically comprise a housing, a material inlet and a material outlet, helical conveying guide vanes arranged in the housing, shafts for fixing the guide vanes and bearings for fixing the guide vane shafts.

In the production practice, the situation often exists, along with the increase of the concentration of the solution, the viscosity of the solution rises, the surface tension is increased, the fluidity is deteriorated, crystals are gathered and scaled on the surface of a heat exchanger in the heat exchange process, continuous effective and continuous flowing is difficult to form, and the normal heat exchange work can not be maintained continuously and smoothly in the traditional mode. The invention solves the fluidity problem by forced pushing of the screw system, and arranges a special mechanism for forced heat exchange, and the solution is sent out or continuously processed after being heated, or other process targets are completed.

In the production practice, there is another situation that the solid materials to be conveyed are relatively high or low in temperature, need to be cooled or heated to meet the technological requirements, such as fertilizers, cement, food additives and the like, need to be cooled during the production process so as to be bagged and rapidly cooled in time to maintain special quality, or need to be heated to meet the special technological requirements, and the materials can generate fluid-like motion states under the action of external force but are difficult to stably maintain. The existing screw conveyor can only convey materials, but cannot solve the problems. In the prior art, equipment such as a fluidized bed and the like are mostly adopted for heat exchange, but fluidized bed devices have high energy consumption and unobvious heat exchange effect, and can be discharged along with a large amount of dust during conveying, so that the influence on the environment is serious, and the requirements of the current development trend and technical progress are not met.

Although the existing screw conveyor can effectively convey solid materials, the temperature of the conveyed materials cannot be changed in the conveying process, and therefore the problem caused by overlarge viscosity of the materials cannot be well solved. While the fluidized bed can solve the problem of solid material conveying to a certain extent while heating, the conveying efficiency, especially the conveying of the material with higher viscosity, is very difficult or even completely insufficient.

Disclosure of Invention

The invention provides a high-concentration solution and solid material conveying device which can solve the problems which cannot be solved by the prior art.

The high-concentration solution and solid material conveying device with the heat exchange function of the invention also comprises the following components: the device comprises a shell, a material inlet and a material outlet which are arranged on the shell, a spiral conveying guide vane arranged in the shell, a shaft for fixing the guide vane and a bearing for fixing the guide vane shaft.

In the invention, an inner jacket and an outer jacket form a closed cavity together with an end plate thereof, and the inner jacket is a heat exchange place for a heat exchange medium and a medium to be treated; the guide vane shaft and the hollow guide vane spiral in the air also form a relatively independent closed cavity and simultaneously become a heat exchange mechanism, and the places all participate in heat exchange as heat exchange surfaces, so that the contact surface with materials is very large, and the heat exchange effect is obvious. In the working process, the screw shaft rotates under the drive of the variable frequency motor to forcibly push the materials to continuously and stably move forwards, the sensitivity of screw conveying to the viscosity of the materials is very low, the influence of the fluidity of the medium is very small, and the materials flow tangentially along the surface of the guide vane, namely, the physical friction is continuously carried out, so that the scaling tendency in the equipment is avoided.

The invention can efficiently convey high-concentration solution or solid materials, can heat or cool the materials in the conveying process, and can also keep the materials in a proper temperature range in the conveying process, so the invention can also be used as an independent and complete device to convey the high-concentration solution solid flow materials and heat or cool the materials simultaneously, thereby meeting the process requirements. When an intelligent DCS control system is adopted, the normal operation parameters of the invention are all completed by preset programs, thereby greatly liberating the productivity and improving the working efficiency.

And secondly, the number of parts such as equipment, valves and the like is small, the number of control links is small, and the automation control degree is higher. The guide vane shaft is driven by a variable frequency motor reducer, the material conveying amount is adjusted by utilizing the rotating speed, a set coordination working relation is formed between control valves, the operating frequency of the driving motor is changed, the material conveying amount is synchronously changed, and a corresponding amount of heat source medium is provided by the valves to be matched with the material conveying amount. The operation logic parameters can be prefabricated and modified in the DCS system, and the system can automatically coordinate and match, so that the process requirements are met.

Drawings

Figure 1 is a schematic structural view of the present invention,

FIG. 2 is a schematic view of a connection structure of the helical guide vane and the hollow shaft shown in FIG. 1.

In the figure: 1 is a variable frequency motor reducer; 2 is an elastic coupling; a guide vane shaft fixing bearing is arranged at 3; 4, hollow shaft end support; 5, sealing the hollow shaft end; 6 is an outer sleeve end plate; 7 is an outer jacket heat exchange medium outlet; 8 is a guide vane spiral hollow shaft; 9 is a material outlet; 10 is a hollow shaft heat exchange medium outlet; 11 is an inner sleeve end plate; 12 is a hollow shaft heat exchange medium inlet; 13 is an inlet of an external jacket heat exchange medium; 14 is an outer sleeve; 15 is a hollow spiral guide vane; 16 is an inner shell; 17 is a material inlet; 18 is a motor bracket; 19 is a heat exchange medium control valve; and 20 is a guide vane heat exchange medium inlet.

Detailed Description

The present invention is illustrated with reference to the accompanying drawings.

The structure of the invention is as shown in figure 1, a variable frequency motor reducer 1 is connected with a guide vane spiral hollow shaft 8 through an elastic coupling 2, two ends of the guide vane spiral hollow shaft 8 are fixed by a guide vane shaft fixing bearing 3 assembled on a hollow shaft end support 4, and a hollow shaft end seal 5 is also assembled at the end part of the fixing bearing for preventing liquid leakage. The hollow spiral guide vane 15 of the invention is fixed on the hollow shaft 8 along a spiral line and is communicated with the inside of the hollow shaft through a guide vane steam inlet 20. The hollow shaft 8 with the spiral guide vanes is assembled in an inner shell 16, the inner shell 16 is provided with a material inlet 17 and a material outlet 9 at two ends of the hollow shaft respectively, and when the hollow shaft 8 rotates, the materials can be conveyed from the inlet to the outlet and discharged through the forced pushing action generated by the rotation of the spiral shaft. The outer sleeve 14 is arranged outside the shell 16 to form a closed cavity, heat exchange medium enters the closed cavities of the inner jacket and the outer jacket from the outer jacket medium inlet 13 and exchanges heat with the medium to be treated in the inner jacket, and the medium after heat exchange is discharged from the outer jacket heat exchange medium outlet 7. A closed cavity is also formed among the inner jacket 16, the inner sleeve end plate 11 and the hollow spindle 8 of the spiral guide vane, heat exchange medium enters the closed cavity from the inlet 12 of the hollow spindle and exchanges heat with the medium to be treated through the hollow spindle and the outer surface of the hollow spiral guide vane, and the medium after heat exchange is discharged from the outlet 10 of the hollow spindle heat exchange medium.

The hollow shaft 8 of the invention is arranged into a hollow tubular structure, and the hollow spiral guide vane 15 is also in a hollow form and is fixed on the hollow shaft along a spiral line. The spiral line of stator assembly position is opened with continuous stator heat transfer medium entry 20 for see fig. 2 for the inside effective intercommunication of spiral central siphon and stator, fresh steam enters into the hollow shaft pipe, then enters into inside the spiral stator through stator heat transfer medium entry 20, and hollow shaft and stator will be as heat transfer surface and material effective contact and produce the heat transfer, and the material is heated or is cooled off, and the medium after the heat transfer is discharged from hollow shaft heat transfer medium export 10.

When the variable-frequency screw conveyor works, the hollow shaft rotates under the driving of the variable-frequency motor, the material entering the spiral end part from the material inlet 17 is forcibly pushed to continuously and stably move forwards, the sensitivity of spiral conveying to the viscosity of the material is very low, the influence on the fluidity of a medium is very small, and the material flows tangentially along the surface of the guide vane, namely, the physical friction and the shearing action are continuously carried out, so that the scaling tendency is avoided. The material continuously exchanges heat with the inner jacket 16 in the forward process, is finally discharged from the material outlet 9 under the pushing of the spiral shaft, and the feeding amount is synchronously changed by changing the operating frequency of the driving motor. The invention uses the rotary guide vane to push the material to realize the material transportation, so the invention can be used for transporting high-concentration and high-viscosity liquid materials and also can be used for transporting solid materials.

The working states of the embodiment of the invention for heating the conveyed materials are as follows: the material to be treated is fed in from a material inlet 17, a steam inlet control valve 19 on a fresh steam supply pipe is opened, a variable frequency motor reducer 1 is started, the material rolls forward under the pushing of a spiral, fresh steam enters a jacket cavity, a hollow shaft and a guide vane from an outer jacket medium inlet 13 through a hollow shaft heat exchange medium inlet 12 and a heat exchange medium respectively (at the moment, 12 and 3 become inlets for heating steam respectively) to fully exchange heat with the material outside the spiral, the material is heated, the steam is condensed to form condensate water after heat exchange, and the condensate water is discharged from an outer jacket heat exchange medium outlet 7 and a hollow shaft heat exchange medium outlet 10 respectively (at the moment, 7 and 10 become condensate water outlets respectively). The working frequency of the variable frequency motor reducer 1 is adjusted, the spiral material quantity is changed along with the adjustment, the opening degree of the valve 19 is controlled according to the material temperature signal on the material outlet 9, and a coordinated and matched system logic is formed, so that the process requirement is met. The system automatically balances the material inlet and outlet quantity and operates at the system temperature under the set DCS parameters.