Pipeline mixer of ash conveying system

Abstract

The utility model relates to the technical field of ash conveying systems, and discloses an ash conveying system pipeline mixer which comprises a steel pipe, and the whole steel pipe is a cylindrical pipe body. The multiple sets of wear-resisting straight pipes are arranged in the steel pipe, and the wear-resisting straight pipes are fixedly connected with the steel pipe; the mixing assembly is arranged in the wear-resistant straight pipe, the mixing assembly is used for mixing ash gas in the wear-resistant straight pipe, the mixing assembly comprises wear-resistant ceramic reducing pipes, the wear-resistant ceramic reducing pipes are arranged in the middle of the wear-resistant straight pipe in an array mode, and gaps exist between the wear-resistant ceramic reducing pipes; through cooperation of the steel pipe, the wear-resistant straight pipe, the wear-resistant ceramic reducing pipe and other parts, the pipeline mixer of the ash conveying system is low in production cost, good in mixing effect, resistant to corrosion and small in energy consumption, auxiliary power does not need to be added, and the flow speed of conveyed materials is appropriate; the problems that an ash conveying pipeline of an existing pneumatic ash conveying system is poor in ash conveying performance, the bottom of the ash conveying pipeline is seriously abraded, the service life is short, and energy consumption is large are effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ash conveying systems, and specifically relates to an ash conveying system pipeline mixer. Background Technique

[0002] At present, most pneumatic ash conveying pipelines adopt double - sleeve ash conveying pipelines, ash conveying pipelines with automatic air - assisting devices, and gradually expanding pneumatic ash conveying pipelines. The double - sleeve ash conveying pipeline installs a ventilation pipeline with multiple holes in the upper part of the ash conveying pipeline. The ventilation pipeline is connected to an external compressed air pipeline. The ash conveying air source enters the ash conveying pipeline from the double - sleeve, resulting in slow gas flow and low air pressure in the ash conveying pipeline, and it cannot solve the problem of ash accumulation at the lower part of the pipeline, leading to serious wear at the lower part of the ash conveying pipeline. The double - sleeve ash conveying pipeline has the disadvantages of complex structure, high energy consumption, and unstable performance.

[0003] After retrieval, the document with the publication number (CN118079694A) discloses a multi - stage pulse pipeline mixer with variable turbulence intensity, which is a device for water treatment. There are an inlet and an outlet at both ends of the shell. There is one or more chemical dosing ports on the pipe wall of the shell adjacent to the inlet. The inner cavity of the shell between the inlet and the outlet is composed of multiple groups of gradually shrinking pipes and gradually expanding pipes. The diameter D of the expanded end of the gradually shrinking pipe and the gradually expanding pipe is the same as the diameters of the inlet and the outlet, and the diameter d of the contracted end gradually increases in an arithmetic progression.

[0004] When the mixed fluid of the chemical agent and water flows through the above - mentioned device, it forms a multi - stage pulse vortex flow with variable turbulence intensity, which can effectively improve the mixing reaction effect, and has the characteristics of simple structure, low head loss, not easy to block, and wide application range for the treated water.

[0005] The ash conveying pipeline with an automatic air - assisting device adds multiple groups of automatic air - assisting devices to the ash conveying pipeline. An automatic air - assisting valve is installed between the compressed gas pipeline and the conveying pipeline. The compressed air inlet hole of the compressed gas pipeline is connected to the automatic air - assisting valve, and the conveying pipeline connection hole of the automatic air - assisting valve is connected to the conveying pipeline. For this kind of automatic air - assisting device, when the pneumatic conveying pipeline is blocked and the pressure in the pneumatic ash conveying pipeline is greater than the designed pressure of the automatic air - assisting device, it will automatically open for blockage clearing. Such a blockage - clearing device is prone to problems such as the pneumatic air - assisting valve not being able to open normally or not being able to close completely. These defects are not easy to be found during actual operation, making the ash conveying system operate unstably, with high energy consumption and high maintenance costs. The automatic blowing and blocking device allows a large amount of gas to enter the pneumatic ash conveying pipe, increasing the flow rate of the material in the pipeline and intensifying the wear of the pipeline.

[0006] The gradually expanding ash transportation pipeline reduces the flow velocity of the material by increasing the diameter of the ash transportation pipeline, thereby reducing the accelerated wear of the pipeline caused by the too fast flow velocity of the material. Although this method reduces the flow velocity of the material, it cannot solve the problem of material settlement, which affects the ash transportation efficiency of the ash transportation pipeline. This ash transportation technology has the disadvantages of low ash transportation efficiency, high energy consumption, and high cost.

[0007] In view of this, the present utility model is specifically proposed. Summary of the Utility Model

[0008] In order to solve the technical problems of ash-gas transportation, the basic concept of the technical solution adopted by the present utility model is as follows:

[0009] An ash transportation system pipeline mixer includes a steel pipe, and the overall shape of the steel pipe is a cylindrical pipe body; a plurality of wear-resistant straight pipes are arranged inside the steel pipe, and the wear-resistant straight pipes are fixedly connected to the steel pipe; a mixing assembly is arranged inside the wear-resistant straight pipe, and the mixing assembly is used for mixing the ash and gas inside the wear-resistant straight pipe. The mixing assembly includes wear-resistant ceramic tapered pipes, and the wear-resistant ceramic tapered pipes are arranged in an array in the middle of the wear-resistant straight pipe. There are gaps between the wear-resistant ceramic tapered pipes, and the wear-resistant ceramic tapered pipes are fixedly connected to the wear-resistant straight pipe.

[0010] As a preferred embodiment of the present utility model, the plurality of wear-resistant straight pipes are arranged in an array inside the steel pipe, and the plurality of wear-resistant straight pipes are connected to the steel pipe by adhesion.

[0011] As a preferred embodiment of the present utility model, the overall shape of the wear-resistant straight pipe is linear or arc-shaped. The wear-resistant straight pipe is made of wear-resistant ceramic material and is extended by bonding between a plurality of wear-resistant straight pipes.

[0012] As a preferred embodiment of the present utility model, the overall shape of the wear-resistant ceramic tapered pipe is trapezoidal, the trapezoidal top end of the wear-resistant ceramic tapered pipe faces the gas outlet direction, and the corners of the wear-resistant ceramic tapered pipe are inclined, and the inclined surface faces the bottom end of the wear-resistant straight pipe.

[0013] The present utility model has the following beneficial effects compared with the prior art:

[0014] 1. This ash transportation system pipeline mixer, through the cooperation of components such as a steel pipe, wear-resistant straight pipes, and wear-resistant ceramic tapered pipes, has low production cost, good mixing effect, wear resistance, and low energy consumption. There is no need to add auxiliary power, making the flow velocity of the transported material more reasonable. It can effectively solve the problems of poor ash transportation performance of the ash transportation pipeline in the existing pneumatic ash transportation system, serious abrasion at the bottom of the ash transportation pipeline, short service life, and high energy consumption.

[0015] 2. In this ash conveying system pipeline mixer, wear-resistant straight pipes 102 and multiple groups of wear-resistant ceramic tapered pipes 103a, 103b, 103c, 103d, and 103e are installed inside the steel pipe 101. When the fluid passes through the tapered pipes 103a and 103b, during the process where its flow velocity decreases from large to small, when the high-speed fluid jets into the low-flow velocity area, a vortex flow is generated, strengthening the mixing effect of the compressed air and the material. The mixed fluid of the compressed air and the material forms a multi-stage vortex flow mixing with an increasing and then decreasing turbulence intensity after passing through multiple groups of tapered pipes, enabling the material at the bottom of the ash conveying pipeline to be fully mixed with the compressed air, avoiding the defect of severe wear at the bottom of the existing ash conveying pipeline. Since the material and the compressed air in the ash conveying pipeline are fully mixed, the ash-gas ratio in the ash conveying pipeline is increased, thus greatly improving the ash conveying efficiency of the ash conveying pipeline.

[0016] 3. In this ash conveying system pipeline mixer, since the vortex flow of the material in the pipeline will offset a part of the kinetic energy of the material transportation while greatly increasing the ash-gas ratio in the pneumatic ash conveying pipeline, reducing the velocity of the mixed material in the pneumatic ash conveying pipeline, ensuring that the material can maintain a reasonable flow velocity required for material transportation while being well mixed, thus reducing the accelerated wear of the pipeline caused by too fast material flow velocity. This technology can select multiple groups of mixers according to different distances of the pneumatic ash conveying pipeline.

[0017] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0018] In the drawings:

[0019] Figure 1 is a schematic diagram of the straight shape of the steel pipe of the present invention;

[0020] Figure 2 is a schematic diagram of the arc shape of the steel pipe of the present invention;

[0021] Figure 3 is a schematic diagram of the structure of the mixing component of the present invention;

[0022] Figure 4 is a schematic diagram showing the flow trajectory of ash and gas during the operation of the straight-shaped steel pipe of the present invention;

[0023] Figure 5 is a schematic diagram showing the flow trajectory of ash and gas during the operation of the arc-shaped steel pipe of the present invention.

[0024] In the figure: 101, steel pipe; 102, wear-resistant straight pipe; 103, wear-resistant ceramic tapered pipe. Specific Embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model.

[0026] Please refer to Figures 1-5 , a pipeline mixer for an ash conveying system, comprising a steel pipe 101, the overall shape of the steel pipe 101 being a cylindrical pipe body; wear-resistant straight pipes 102, multiple groups of wear-resistant straight pipes 102 being arranged inside the steel pipe 101, the wear-resistant straight pipes 102 being fixedly connected to the steel pipe 101; a mixing assembly, the mixing assembly being arranged inside the wear-resistant straight pipes 102, the mixing assembly being used for mixing ash and air inside the wear-resistant straight pipes 102, the mixing assembly including wear-resistant ceramic tapered pipes 103, the wear-resistant ceramic tapered pipes 103 being arranged in an array in the middle of the wear-resistant straight pipes 102, there being gaps between the wear-resistant ceramic tapered pipes 103, the wear-resistant ceramic tapered pipes 103 being fixedly connected to the wear-resistant straight pipes 102. When the fluid flows through the wear-resistant straight pipes 102 and the wear-resistant ceramic tapered pipes 103, during the process where its flow rate changes from large to small, when the high-speed fluid jets into the low-flow-rate area, obvious pulsed vortex flows are generated, strengthening the mixing effect of the compressed air and the material. The mixed fluid of the compressed air and the material forms a multi-stage pulsed vortex flow mixing with an increasing and then decreasing turbulence intensity after passing through multiple groups of tapered pipes, enabling the material at the bottom of the ash conveying pipeline to be fully mixed with the compressed air. Since the vortex flow of the material in the pipeline will offset a part of the kinetic energy of the material transportation while greatly increasing the ash-air ratio in the pneumatic ash conveying pipeline, reducing the speed of the mixed material in the pneumatic ash conveying pipeline, ensuring that the material can maintain a reasonable flow rate required for material transportation while being well mixed, thereby reducing the accelerated wear of the pipeline caused by excessive flow rate. This technology can select multiple groups of mixers according to different distances of the pneumatic ash conveying pipeline.

[0027] Among them, the overall shape of the wear-resistant straight pipes 102 is linear or arc-shaped. The wear-resistant straight pipes 102 are made of wear-resistant ceramic materials and are extended by bonding between multiple wear-resistant straight pipes 102. The overall shape of the wear-resistant ceramic tapered pipes 103 is trapezoidal, the trapezoidal top of the wear-resistant ceramic tapered pipes 103 facing the air outlet direction, the corners of the wear-resistant ceramic tapered pipes 103 being inclined, the inclined surface facing the bottom end of the wear-resistant straight pipes 102. The multiple groups of wear-resistant ceramic tapered pipes 103 arranged in an array include, but are not limited to, 103a, 103b, 103c, 103d, and 103e, specifically as Figure 2 and Figure 3As shown in the figure, it should be noted that the wear-resistant ceramic reducing pipe 103 can be extended according to the actual usage situation. A wear-resistant straight pipe 102 and multiple groups of wear-resistant ceramic reducing pipes 103a, 103b, 103c, 103d, 103e, etc. are installed inside the steel pipe 101. When the fluid passes through the reducing pipes 103a and 103b, during the process of its flow velocity decreasing from large to small, obvious pulsed vortex flows are generated when the high-speed fluid jets into the low-flow velocity area, strengthening the mixing effect of the compressed air and the material. The mixed fluid of the compressed air and the material forms a multi-stage pulsed vortex flow mixing with the turbulence intensity increasing and then decreasing after passing through multiple groups of reducing pipes, enabling the material at the bottom inside the ash conveying pipe to be fully mixed with the compressed air, avoiding the defect of severe wear at the bottom of the existing ash conveying pipe. Since the material and the compressed air inside the ash conveying pipe are fully mixed, the ash-gas ratio inside the ash conveying pipe is increased, thereby greatly improving the ash conveying efficiency of the ash conveying pipe.

[0028] Working principle: A wear-resistant straight pipe 102 and multiple groups of wear-resistant ceramic reducing pipes 103a, 103b, 103c, 103d, 103e, etc. are installed inside the steel pipe 101. When the fluid passes through the reducing pipes 103a and 103b, during the process of its flow velocity decreasing from large to small, vortex flows are generated when the high-speed fluid jets into the low-flow velocity area, strengthening the mixing effect of the compressed air and the material. The mixed fluid of the compressed air and the material forms a multi-stage vortex flow mixing with the turbulence intensity increasing and then decreasing after passing through multiple groups of reducing pipes, enabling the material at the bottom inside the ash conveying pipe to be fully mixed with the compressed air, avoiding the defect of severe wear at the bottom of the existing ash conveying pipe. Since the material and the compressed air inside the ash conveying pipe are fully mixed, the ash-gas ratio inside the ash conveying pipe is increased, thereby greatly improving the ash conveying efficiency of the ash conveying pipe. Since the vortex flow of the material inside the pipe will offset a part of the kinetic energy of the material conveying and greatly increase the ash-gas ratio inside the pneumatic ash conveying pipe, reducing the velocity of the mixed material inside the pneumatic ash conveying pipe, ensuring that the material can maintain a reasonable flow velocity required for material conveying while being well mixed, thereby reducing the accelerated wear of the material on the pipe due to excessive flow velocity. This technology can select multiple groups of mixers according to different distances of the pneumatic ash conveying pipe. The pipe mixer of this ash conveying system has low production cost, good mixing effect, abrasion resistance, and low energy consumption, without the need to add auxiliary power, making the flow velocity of the conveyed material more reasonable, and can effectively solve the problems of poor ash conveying performance of the ash conveying pipe in the existing pneumatic ash conveying system, severe abrasion at the bottom of the ash conveying pipe, short service life, and high energy consumption.

[0029] It is understood that the present utility model is described through some embodiments. Those skilled in the art will know that, without departing from the spirit and scope of the present utility model, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A pipeline mixer for an ash conveying system, characterized in that: include: A steel pipe (101), the steel pipe (101) is in the shape of a cylindrical tube as a whole; Wear-resistant straight pipes (102), multiple groups of wear-resistant straight pipes (102) are arranged in the steel pipe (101), and the wear-resistant straight pipes (102) are fixedly connected to the steel pipe (101); A mixing component is arranged in the wear-resistant straight pipe (102), and is used to mix the ash gas in the wear-resistant straight pipe (102). The mixing component comprises a wear-resistant ceramic reducer (103). An array of the wear-resistant ceramic reducers (103) is arranged in the middle of the wear-resistant straight pipe (102), and there are gaps between the wear-resistant ceramic reducers (103). The wear-resistant ceramic reducers (103) are fixedly connected to the wear-resistant straight pipe (102).

2. The ash conveying system pipeline mixer according to claim 1, characterized in that: The plurality of groups of wear-resistant straight tubes (102) are arranged in an array inside the steel tube (101), and the plurality of groups of wear-resistant straight tubes (102) are connected to the steel tube (101) by means of adhesion.

3. The ash conveying system pipeline mixer according to claim 1, characterized in that: The wear-resistant straight tube (102) is in a straight line or arc shape as a whole. The wear-resistant straight tube (102) is made of wear-resistant ceramic material and is extended by bonding a plurality of wear-resistant straight tubes (102).

4. The ash conveying system pipeline mixer according to claim 1, characterized in that: The wear-resistant ceramic reducer (103) is trapezoidal in shape as a whole, the top of the trapezoid of the wear-resistant ceramic reducer (103) faces the gas outlet direction, the corners of the wear-resistant ceramic reducer (103) are inclined, and the inclined surface faces the bottom end of the wear-resistant straight tube (102).

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