CN116534591A - Powder Pneumatic Conveying Pump - Google Patents

Powder Pneumatic Conveying Pump Download PDF

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Publication number
CN116534591A
CN116534591A CN202210088442.0A CN202210088442A CN116534591A CN 116534591 A CN116534591 A CN 116534591A CN 202210088442 A CN202210088442 A CN 202210088442A CN 116534591 A CN116534591 A CN 116534591A
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China
Prior art keywords
conveying
powder
pipe
gas
pneumatic conveying
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CN202210088442.0A
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Chinese (zh)
Inventor
刘冰
秦强
何立新
赵香龙
王楠
张进华
梁咏诗
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China Energy Investment Corp Ltd
National Institute of Clean and Low Carbon Energy
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China Energy Investment Corp Ltd
National Institute of Clean and Low Carbon Energy
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Priority to CN202210088442.0A priority Critical patent/CN116534591A/en
Publication of CN116534591A publication Critical patent/CN116534591A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/40Feeding or discharging devices
    • B65G53/48Screws or like rotary conveyors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/52Adaptations of pipes or tubes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Transport Of Granular Materials (AREA)

Abstract

本发明涉及气力输送设备技术领域,公开了一种粉体气力输送泵,包括粉体给料装置、气力输送装置以及气固混合部,所述粉体给料装置的出口与所述气力输送装置的出口交汇于所述气固混合部,所述粉体给料装置包括具有渐缩段的送料管以及设置于所述送料管内的输送部件,所述输送部件能够将物料推送至所述气固混合部,所述渐缩段的内径设置为沿物料输送方向逐渐变小,所述送料管在所述渐缩段之外的部分的内径沿物料输送方向不变。上述技术方案中,受渐缩段结构导向,使送料管中的物料在粉体给料装置的出口处发生堆积,使物料能够填满粉体给料装置的出口后再进行输出,因此能够防止逆向蒸汽气流进入到粉体给料装置内。

The invention relates to the technical field of pneumatic conveying equipment, and discloses a powder pneumatic conveying pump, which includes a powder feeding device, a pneumatic conveying device and a gas-solid mixing part, and the outlet of the powder feeding device is connected to the pneumatic conveying device The outlets of the outlets meet at the gas-solid mixing part, and the powder feeding device includes a feeding pipe with a tapered section and a conveying part arranged in the feeding pipe, and the conveying part can push the material to the gas-solid mixing part. In the mixing section, the inner diameter of the tapered section is set to gradually decrease along the material conveying direction, and the inner diameter of the portion of the feeding pipe outside the tapered section remains constant along the material conveying direction. In the above technical solution, guided by the structure of the tapered section, the material in the feeding pipe is accumulated at the outlet of the powder feeding device, so that the material can fill the outlet of the powder feeding device before being output, so it can prevent The reverse steam flow enters the powder feeding device.

Description

粉体气力输送泵Powder Pneumatic Conveying Pump

技术领域technical field

本发明涉及气力输送设备技术领域,具体地涉及一种粉体气力输送泵。The invention relates to the technical field of pneumatic conveying equipment, in particular to a powder pneumatic conveying pump.

背景技术Background technique

煤炭的气化是以煤炭为原料,在特定的设备(如气化炉)内,在高温高压下使煤炭中的有机物质和气化剂发生一系列的化学反应,使固体的煤炭转化成可燃性气体的生产过程。在中小型煤气化技术中,通常使用来自粉煤仓中的粉煤与蒸汽混合输送,经由气化炉喷嘴中心管道喷射到气化炉膛内部,参与气化反应。Coal gasification uses coal as raw material. In specific equipment (such as a gasifier), a series of chemical reactions occur between the organic matter in the coal and the gasification agent under high temperature and pressure, so that the solid coal is converted into a combustible Gas production process. In small and medium-sized coal gasification technology, the pulverized coal from the pulverized coal bunker is usually mixed with steam and injected into the gasification furnace through the central pipe of the gasifier nozzle to participate in the gasification reaction.

在粉煤进入到气固混合输送管道过程之前,易发生如下不良现象:(1)常有逆向蒸汽气流进入到粉煤仓中,形成的凝结水和粉煤混合造成结块现象,进而影响粉煤正常顺畅下料。(2)粉煤下料控制部件,如星型阀,本身不具备严格的密封性,因此易受到逆向蒸汽气流的干扰,造成粉煤的下料量难以精确控制和计量。(3)粉煤在进入到气固接触混合区域之前,还要经过称重螺旋设备和密封螺旋设备,其运行路径漫长。由于上述两个原厂设备没有保温伴热功能,且后期增设保温伴热功能设置难度较大、效果较差,导致设备局部伴热不良现象,进而导致热的粉煤易在运行过程中冷却,不利于粉煤正常状态的输送。Before the pulverized coal enters the gas-solid mixing pipeline process, the following adverse phenomena are prone to occur: (1) The reverse steam flow often enters the pulverized coal bunker, and the formed condensed water mixes with the pulverized coal to cause agglomeration, which in turn affects the pulverized coal. The coal is normally and smoothly unloaded. (2) Pulverized coal feeding control components, such as star valves, do not have strict sealing performance, so they are easily disturbed by reverse steam flow, making it difficult to accurately control and measure the pulverized coal feeding volume. (3) Before the pulverized coal enters the gas-solid contact mixing area, it also needs to pass through the weighing screw device and the sealing screw device, and its running path is long. Since the above two original equipments do not have thermal insulation and heat tracing functions, and it is difficult to set up thermal insulation and heat tracing functions in the later stage, the effect is poor, resulting in poor local heat tracing of the equipment, which in turn leads to the fact that hot pulverized coal is easy to cool during operation. It is not conducive to the transportation of pulverized coal in normal state.

发明内容Contents of the invention

本发明的目的是为了克服现有技术存在的逆向蒸汽进入粉煤仓中的问题,提供一种粉体气力输送泵。The object of the present invention is to provide a powder pneumatic conveying pump in order to overcome the problem in the prior art that the reverse steam enters the pulverized coal bunker.

为了实现上述目的,本发明提供一种粉体气力输送泵,包括粉体给料装置、气力输送装置以及气固混合部,所述粉体给料装置的出口与所述气力输送装置的出口交汇于所述气固混合部,所述粉体给料装置包括具有渐缩段的送料管以及设置于所述送料管内的输送部件,所述输送部件能够将物料推送至所述气固混合部,所述渐缩段的内径设置为沿物料输送方向逐渐变小,所述送料管在所述渐缩段之外的部分的内径沿物料输送方向不变。In order to achieve the above object, the present invention provides a powder pneumatic conveying pump, comprising a powder feeding device, a pneumatic conveying device and a gas-solid mixing part, the outlet of the powder feeding device meets the outlet of the pneumatic conveying device In the gas-solid mixing part, the powder feeding device includes a feeding pipe with a tapered section and a conveying part arranged in the feeding pipe, and the conveying part can push the material to the gas-solid mixing part, The inner diameter of the tapered section is set to gradually decrease along the material conveying direction, and the inner diameter of the part of the feeding pipe outside the tapered section remains constant along the material conveying direction.

可选地,所述输送部件包括沿所述送料管中心轴线设置的主轴以及围绕主轴设置的螺旋叶片。Optionally, the conveying component includes a main shaft arranged along the central axis of the feeding tube and helical blades arranged around the main shaft.

可选地,所述螺旋叶片的外缘与所述渐缩段的内壁密封接合,所述螺旋叶片为等距螺旋叶片。Optionally, the outer edge of the helical blade is in sealing engagement with the inner wall of the tapered section, and the helical blade is an equidistant helical blade.

可选地,所述输送部件还包括能够驱动所述主轴旋转的驱动组件。Optionally, the conveying part further includes a driving assembly capable of driving the main shaft to rotate.

可选地,所述粉体给料装置还包括可转动地铰接于送料管出口处的端盖,所述端盖能够在物料的推动下打开。Optionally, the powder feeding device further includes an end cover rotatably hinged at the outlet of the feeding tube, and the end cover can be opened under the push of the material.

可选地,所述气力输送装置包括输气管,所述输气管包覆于所述送料管外侧并且与所述送料管之间设置有气体流道。Optionally, the pneumatic conveying device includes an air delivery pipe, and the air delivery pipe covers the outside of the feeding pipe and is provided with a gas flow channel between the feeding pipe.

可选地,所述气体流道内设置有沿围绕中心轴线的螺旋线延伸的旋流叶片。Optionally, swirl blades extending along a helical line around the central axis are arranged in the gas channel.

可选地,所述旋流叶片的两侧边缘分别连接于所述送料管的外壁以及所述输气管的内壁。Optionally, edges on both sides of the swirl blade are respectively connected to the outer wall of the feeding pipe and the inner wall of the air delivery pipe.

可选地,所述进气管设置于远离所述气力输送装置的出口的一端。Optionally, the air inlet pipe is arranged at an end away from the outlet of the pneumatic conveying device.

可选地,所述粉体气力输送泵还包括进料管,所述进料管竖直设置,所述进料管的底端与所述进料口相连通。Optionally, the powder pneumatic conveying pump further includes a feed pipe, the feed pipe is arranged vertically, and the bottom end of the feed pipe communicates with the feed inlet.

通过上述技术方案,上述技术方案中,利用具有渐缩段的送料管,在输送部件的推动下,使送料管中的粉状物料(通常为粉煤)能够在粉体给料装置的出口区域发生一定程度的堆积现象,从而使物料能够充分地填满粉体给料装置的出口处,直至进入气固混合部后再与气体进行混合,进而使气体无法经粉体给料装置的出口渗入,因此能够防止逆向蒸汽气流进入到粉体给料装置内,进而防止蒸汽形成的凝结水和粉煤混合造成结块现象。Through the above-mentioned technical solution, in the above-mentioned technical solution, the powdery material (usually pulverized coal) in the feeding tube can be transported in the outlet area of the powder feeding device by using the feeding pipe with a tapered section under the push of the conveying parts. A certain degree of accumulation occurs, so that the material can fully fill the outlet of the powder feeding device, until it enters the gas-solid mixing part and then mixes with the gas, so that the gas cannot penetrate through the outlet of the powder feeding device , so it can prevent the reverse steam flow from entering the powder feeding device, thereby preventing the condensed water formed by the steam from mixing with the pulverized coal to cause agglomeration.

附图说明Description of drawings

图1是本发明所述的粉体气力输送泵的一种实施方式的结构示意图;Fig. 1 is a schematic structural view of an embodiment of a powder pneumatic conveying pump according to the present invention;

图2是本发明所述的输送部件的一种实施方式的结构示意图;Fig. 2 is a schematic structural view of an embodiment of the conveying part of the present invention;

图3是本发明所述的端盖的一种实施方式的结构示意图;Fig. 3 is a schematic structural view of an embodiment of the end cap of the present invention;

图4是本发明所述的送料管一种实施方式的结构示意图;Fig. 4 is a schematic structural view of an embodiment of the feeding pipe of the present invention;

图5是本发明所述的气体输送装置的一种实施方式的结构示意图。Fig. 5 is a schematic structural view of an embodiment of the gas delivery device of the present invention.

附图标记说明Explanation of reference signs

10-粉体给料装置,11-输送组件,111-电动机,112-减速器,113-联轴器,114-主轴,115-第一螺旋叶片,116-螺旋叶片,117-轴承,12-进料管端盖,121-进料管,122-第一直筒段,123-第一法兰,13-送料管,131-渐缩段,132-第二法兰,133-端盖,134-旋流叶片,20-气力输送装置,21-输气管,22-进气管,23-第三法兰,30-气固混合部,40-支撑架。10-powder feeding device, 11-conveyor assembly, 111-motor, 112-reducer, 113-coupling, 114-main shaft, 115-first helical blade, 116-helical blade, 117-bearing, 12- Feeding pipe end cover, 121-feeding pipe, 122-first straight barrel section, 123-first flange, 13-feeding pipe, 131-converging section, 132-second flange, 133-end cover, 134 - swirl vane, 20 - pneumatic conveying device, 21 - gas delivery pipe, 22 - intake pipe, 23 - third flange, 30 - gas-solid mixing part, 40 - support frame.

具体实施方式Detailed ways

以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是,此处所描述的具体实施方式仅用于说明和解释本发明,并不用于限制本发明。Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

在本发明中,在未作相反说明的情况下,使用的方位词如“上”、“下”、“顶”、“底”通常是指装置或设备处于使用状态下的方位。需要说明的是,这仅是为了便于描述本发明,不应理解为对本发明的限制。In the present invention, unless stated to the contrary, the used orientation words such as "upper", "lower", "top" and "bottom" usually refer to the orientation of the device or equipment when it is in use. It should be noted that this is only for the convenience of describing the present invention, and should not be construed as a limitation of the present invention.

此外,术语“第一”、“第二”等仅用于描述目的,而不应理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be interpreted as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

在本发明中,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。In the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

本发明提供一种粉体气力输送泵,包括粉体给料装置10、气力输送装置20以及气固混合部30,所述粉体给料装置10的出口与所述气力输送装置20的出口交汇于所述气固混合部30,所述粉体给料装置10包括具有渐缩段131的送料管13以及设置于所述送料管13内的输送部件11,所述输送部件11能够将物料推送至所述气固混合部30,所述渐缩段131的内径设置为沿物料输送方向逐渐变小,所述送料管13在所述渐缩段131之外的部分的内径沿物料输送方向不变。The present invention provides a powder pneumatic conveying pump, comprising a powder feeding device 10, a pneumatic conveying device 20 and a gas-solid mixing unit 30, the outlet of the powder feeding device 10 and the outlet of the pneumatic conveying device 20 intersect In the gas-solid mixing part 30, the powder feeding device 10 includes a feeding pipe 13 with a tapered section 131 and a conveying part 11 arranged in the feeding pipe 13, and the conveying part 11 can push the material To the gas-solid mixing part 30, the inner diameter of the tapered section 131 is set to gradually become smaller along the material conveying direction, and the inner diameter of the part of the feeding pipe 13 outside the tapered section 131 is set to be different along the material conveying direction. Change.

需要说明的是,上述装置能够用于粉状物料与气体进行混合,在用于煤炭气化生产过程中通常是以粉煤为原料,与蒸汽进行混合输送后进入气化炉膛内进行气化反应,混合过程通常利用具有一定流速的蒸汽,通过气流效应与粉煤进行混合,可通过将粉煤输送到气流环境内从而完成混合。为方便理解,下面将以煤炭气化生产为例进行说明,但不应视为对本申请实施方式的限制。渐缩段131可作为送料管13的一部分进而设置于送料管13的任何部分,但为了保证输出的粉煤能够充分地填满送料管13的出口,因此,所述送料管13在所述渐缩段131之外的部分的内径沿物料输送方向不变。为了方便设置,渐缩段131可设置于送料管13的出口段,因此渐缩段131的出口即为送料管13的出口,而送料管13的出口亦可作为粉体给料装置10的出口。It should be noted that the above-mentioned device can be used for mixing powdery materials and gas. In the process of coal gasification production, pulverized coal is usually used as raw material, mixed with steam and transported into the gasification furnace for gasification reaction. , the mixing process usually uses steam with a certain flow rate to mix with pulverized coal through the airflow effect, and the mixing can be completed by transporting the pulverized coal into the airflow environment. For the convenience of understanding, the coal gasification production will be taken as an example for description below, but it should not be regarded as a limitation to the implementation of the present application. The tapering section 131 can be used as a part of the feeding pipe 13 and then be arranged on any part of the feeding pipe 13, but in order to ensure that the output pulverized coal can fully fill the outlet of the feeding pipe 13, the feeding pipe 13 should The inner diameter of the portion other than the shrinkage section 131 is constant along the material conveying direction. For the convenience of setting, the tapered section 131 can be arranged at the outlet section of the feeding pipe 13, so the outlet of the tapered section 131 is the outlet of the feeding pipe 13, and the outlet of the feeding pipe 13 can also be used as the outlet of the powder feeding device 10 .

上述技术方案中,利用具有渐缩段131的送料管13,在输送部件11的推动下,使送料管13中的粉状物料(通常为粉煤)能够在粉体给料装置10的出口区域发生一定程度的堆积现象,从而使物料能够充分地填满粉体给料装置10的出口处,直至进入气固混合部30后再与气体进行混合,进而使气体无法经粉体给料装置10的出口渗入,因此能够防止逆向蒸汽气流进入到粉体给料装置10内,进而防止蒸汽形成的凝结水和粉煤混合造成结块现象。为达到较好的实施效果,可设置为:向送料管13内输入的物料流量略大于或等于粉体给料装置10的最大输出流量,即渐缩段131出口处能够承受的最大流量。这样可以通过测算输送部件11的输送速度以及渐缩段131的出口口径来计量输送的粉体量。In the above technical solution, the feed pipe 13 with the tapered section 131 is used, and under the push of the conveying part 11, the powdery material (usually pulverized coal) in the feed pipe 13 can be placed in the outlet area of the powder feeding device 10. A certain degree of accumulation occurs, so that the material can fully fill the outlet of the powder feeding device 10 until it enters the gas-solid mixing part 30 and then mixes with the gas, so that the gas cannot pass through the powder feeding device 10 Therefore, it can prevent the reverse steam flow from entering the powder feeding device 10, thereby preventing the condensed water formed by the steam from mixing with the pulverized coal to cause agglomeration. In order to achieve a better implementation effect, it can be set as follows: the material flow rate input into the feeding pipe 13 is slightly greater than or equal to the maximum output flow rate of the powder feeding device 10, that is, the maximum flow rate that the outlet of the tapered section 131 can withstand. In this way, the amount of powder conveyed can be measured by measuring the conveying speed of the conveying member 11 and the outlet diameter of the tapered section 131 .

所述输送部件11可为活塞式推送结构等结构,只需将物料从入料口推送至送料管13的出口处即可,但是活塞式结构的物料推送过程是间歇式的,不能连续且均匀地持续运作。作为一种具体的实施方式,如图1以及图2所示,所述输送部件11包括沿所述送料管13中心轴线设置的主轴114以及围绕主轴114设置的螺旋叶片116。通过螺旋叶片的旋转能够对粉煤施加均匀且连续的推送力,进而能够向送料管13内连续送料,且输送部件11能够连续地将粉煤送至气固混合部30。The conveying part 11 can be a structure such as a piston-type push structure, which only needs to push the material from the feed inlet to the outlet of the feed pipe 13, but the material push process of the piston-type structure is intermittent and cannot be continuous and uniform. continue to operate. As a specific embodiment, as shown in FIG. 1 and FIG. 2 , the conveying part 11 includes a main shaft 114 arranged along the central axis of the feeding pipe 13 and a helical blade 116 arranged around the main shaft 114 . Through the rotation of the helical blade, a uniform and continuous pushing force can be applied to the pulverized coal, and then the pulverized coal can be continuously fed into the feeding pipe 13 , and the conveying member 11 can continuously send the pulverized coal to the gas-solid mixing part 30 .

为了保证物料能够收到输送部件11传递的推动力,如图2所示,所述螺旋叶片116的外缘与所述渐缩段131的内壁密封接合,所述螺旋叶片116为等距螺旋叶片。螺旋叶片116的外缘与所述渐缩段131的内壁密封接合能够使送料管13内每个部分的物料都能受到推送力,能够物料由于推送力不足,导致不能充分填满渐缩段131的出口处。由于螺旋叶片116的外缘与所述渐缩段131的内壁密封接合,因此,使渐缩段131的内壁与螺旋叶片之间构成多个相对封闭且相对隔离的通道,等距的螺旋叶片116能够使上述通道的通径保持一致且持续向前挤压而保证不会产生空腔。而间距渐小的螺旋叶片116将损失较多动力。In order to ensure that the material can receive the driving force transmitted by the conveying part 11, as shown in Figure 2, the outer edge of the helical blade 116 is in sealing engagement with the inner wall of the tapered section 131, and the helical blade 116 is an equidistant helical blade . The outer edge of the helical blade 116 is in sealing engagement with the inner wall of the tapered section 131 so that each part of the material in the feeding pipe 13 can receive a pushing force, and the material cannot fully fill the tapered section 131 due to insufficient pushing force. of the exit. Since the outer edge of the helical blade 116 is sealingly engaged with the inner wall of the tapered section 131, a plurality of relatively closed and relatively isolated passages are formed between the inner wall of the tapered section 131 and the helical blade, and the equidistant helical blades 116 The diameter of the above-mentioned channel can be kept consistent and continuously pressed forward to ensure that no cavity will be generated. However, the helical blades 116 with gradually smaller pitches will lose more power.

更具体地,如图2所示,所述输送部件11还包括能够驱动所述主轴114旋转的驱动组件。所述驱动组件可以包括电动机111以及与电动机111相连的减速器112,主轴114与减速器112的输出轴可通过联轴器113进行连接,通过电动机111的驱动从而带动主轴114的旋转。More specifically, as shown in FIG. 2 , the conveying component 11 further includes a driving assembly capable of driving the main shaft 114 to rotate. The driving assembly may include a motor 111 and a reducer 112 connected to the motor 111 , the main shaft 114 and the output shaft of the reducer 112 may be connected through a coupling 113 , and the driving of the motor 111 drives the rotation of the main shaft 114 .

作为一种具体的实施方式,所述送料管13可如图1、图3以及图4所示,还包括进料管端盖12,进料管端盖12与渐缩段131相连通共同构成送料管13,进料管端盖12与送料管13之间可通过第一法兰123以及第二法兰132相连接并保证连接处的密封性,进料管端盖12与渐缩段131之间还可设置有第一直筒段122作为衔接,进料管端盖12同样为圆筒结构,其内部可相应地设置有第一螺旋叶片115,第一螺旋叶片115为等径等距螺旋叶片。进入此区域的物料能够在第一螺旋叶片115的作用下充分搅和并给予物料初始的推动力。主轴114与进料管端盖12之间的连接部分可设置有轴承117,轴承117可选用防尘支撑轴承,从而能够在粉尘较多的环境下长时间工作,减少维护作业需求。更进一步地,送料管13内还可通过支撑杆于轴线处设置更多轴承117,支撑杆一端与轴承117相连,另一端则固接于送料管13的内壁上。As a specific embodiment, the feed pipe 13 can be shown in Figure 1, Figure 3 and Figure 4, and also includes a feed pipe end cover 12, and the feed pipe end cover 12 is connected with the tapered section 131 to form a joint The feeding pipe 13, the feeding pipe end cover 12 and the feeding pipe 13 can be connected through the first flange 123 and the second flange 132 to ensure the sealing of the connection. The feeding pipe end cover 12 and the tapered section 131 A first straight cylinder section 122 can also be provided as a connection between them. The feed pipe end cover 12 is also a cylindrical structure, and a first helical blade 115 can be provided correspondingly inside it. blade. The materials entering this area can be fully stirred under the action of the first helical blade 115 and give the materials an initial driving force. A bearing 117 may be provided at the connecting part between the main shaft 114 and the end cover 12 of the feed pipe, and the bearing 117 may be a dust-proof support bearing, so that it can work for a long time in a dusty environment and reduce the need for maintenance operations. Furthermore, more bearings 117 can be arranged on the axis of the feeding pipe 13 through a support rod, one end of the supporting rod is connected to the bearing 117 , and the other end is fixedly connected to the inner wall of the feeding pipe 13 .

当送至送料管13内的粉煤量少于渐缩段131的出口处通径流量时,将导致粉体不能充分地填满送料管13的出口,为解决这一问题,如图4所示,所述粉体给料装置10还包括可转动地铰接于送料管13出口处的端盖133,所述端盖133能够在物料的推动下打开。端盖133可设置为:当粉体到达端盖133位置并有密封积累后,才可推开端盖133。具体地,端盖133处还可设置有与感应器相连通的电磁锁,感应器设置为能够感应到端盖133处的粉煤量,电磁锁只有在感应器感应到粉煤量达到要求后才能打开。When the amount of pulverized coal sent to the feed pipe 13 is less than the flow rate at the outlet of the tapered section 131, the powder cannot fully fill the outlet of the feed pipe 13. To solve this problem, as shown in Figure 4 As shown, the powder feeding device 10 also includes an end cover 133 rotatably hinged at the outlet of the feeding pipe 13, and the end cover 133 can be opened under the push of the material. The end cap 133 can be set such that the end cap 133 can only be pushed away when the powder reaches the position of the end cap 133 and is sealed and accumulated. Specifically, the end cover 133 can also be provided with an electromagnetic lock connected to the sensor. The sensor is set to be able to sense the amount of pulverized coal at the end cover 133. to open.

为了使粉煤在输送过程中能够保持温度或受到温度加热,如图1以及图5所示,所述气力输送装置20包括输气管21,所述输气管21包覆于所述送料管13外侧并且与所述送料管13之间设置有气体流道。由于通常输送的气体为具有一定温度的蒸汽,因此当蒸汽流过气体流道时能够为设置于内侧的送料管13进行保温,达到伴热的目的。In order to keep the pulverized coal at temperature or be heated during the conveying process, as shown in FIG. 1 and FIG. And a gas flow channel is provided between the feeding pipe 13 . Since the gas usually transported is steam with a certain temperature, when the steam flows through the gas flow channel, it can keep the feeding pipe 13 arranged on the inner side warm, so as to achieve the purpose of heat tracing.

为了使气体流道内流过的气体能够具有旋流效应,如图4所示,所述气体流道内设置有沿围绕中心轴线的螺旋线延伸的旋流叶片134。当气体流经旋流叶片135时能够在旋流叶片135的引导下产生一定的旋流。In order to enable the gas flowing in the gas channel to have a swirl effect, as shown in FIG. 4 , the gas channel is provided with swirl blades 134 extending along a helical line around the central axis. When the gas flows through the swirl vane 135 , a certain swirl flow can be generated under the guidance of the swirl vane 135 .

更进一步地,由于输气管21与送料管13之间具有空气流道,导致输气管21缺乏支撑结构,对连接处的强度要求较高,为解决上述问题,所述旋流叶片134的两侧边缘分别连接于所述送料管13的外壁以及所述输气管21的内壁。即旋流叶片134在提供气流引导的作用下,还能够为输气管21提供支撑力。如图1以及图5所示,输气管21可通过第三法兰23与第一法兰123以及第二法兰132相连接。Furthermore, since there is an air passage between the air delivery pipe 21 and the feeding pipe 13, the air delivery pipe 21 lacks a supporting structure, and the strength of the connection is relatively high. In order to solve the above problem, the two sides of the swirl blade 134 The edges are respectively connected to the outer wall of the feeding pipe 13 and the inner wall of the air delivery pipe 21 . That is to say, the swirl vanes 134 can also provide support for the air delivery pipe 21 under the function of providing airflow guidance. As shown in FIG. 1 and FIG. 5 , the gas delivery pipe 21 can be connected to the first flange 123 and the second flange 132 through the third flange 23 .

气固混合部30可设置于输气管21出口端并与其相连,气固混合部30可为沿气体流动方向的渐扩管。气固混合部30的出口处还可设置有法兰结构方便与其他管线相连。The gas-solid mixing part 30 can be arranged at the outlet end of the gas delivery pipe 21 and connected thereto, and the gas-solid mixing part 30 can be an expander along the gas flow direction. A flange structure may also be provided at the outlet of the gas-solid mixing part 30 to facilitate connection with other pipelines.

为了尽可能地加强对送料管13的伴热效果,如图5所示,所述进气管22设置于远离所述气力输送装置20的出口的一端。使气体能够尽可能地流经送料管13的大部分区域,达到较好的伴热效果。In order to enhance the heat tracing effect on the feeding pipe 13 as much as possible, as shown in FIG. 5 , the air inlet pipe 22 is arranged at an end far away from the outlet of the pneumatic conveying device 20 . The gas can flow through most of the area of the feeding pipe 13 as much as possible to achieve a better heat tracing effect.

为了使送入送料管13的物料能够直接地落入送料管内,而不需要额外的装置辅助,所述粉体气力输送泵还包括进料管121,所述进料管121竖直设置,所述进料管121的底端与所述进料口相连通。In order to make the material sent into the feed pipe 13 directly fall into the feed pipe without the need for additional device assistance, the powder pneumatic conveying pump also includes a feed pipe 121, the feed pipe 121 is vertically arranged, so The bottom end of the feed pipe 121 communicates with the feed port.

更进一步地,粉体气力输送泵底部还设置有作为支撑作用的支撑架40。Furthermore, the bottom of the powder pneumatic conveying pump is also provided with a supporting frame 40 as a supporting function.

以上结合附图详细描述了本发明的优选实施方式,但是,本发明并不限于此。在本发明的技术构思范围内,可以对本发明的技术方案进行多种简单变型,包括各个具体技术特征以任何合适的方式进行组合。为了避免不必要的重复,本发明对各种可能的组合方式不再另行说明。但这些简单变型和组合同样应当视为本发明所公开的内容,均属于本发明的保护范围。The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of specific technical features in any suitable manner. In order to avoid unnecessary repetition, various possible combinations are not further described in the present invention. However, these simple modifications and combinations should also be regarded as the content disclosed by the present invention, and all belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a powder air conveying pump, its characterized in that, includes powder feeder (10), air conveying device (20) and gas-solid mixing portion (30), the export of powder feeder (10) with the export of air conveying device (20) meet in gas-solid mixing portion (30), powder feeder (10) including have conveying pipe (13) of convergent section (131) and set up in conveying part (11) in conveying pipe (13), conveying part (11) can with the material propelling movement extremely gas-solid mixing portion (30), the internal diameter of convergent section (131) sets up to become gradually along the material direction of delivery, the internal diameter of conveying pipe (13) is in the external part of convergent section (131) is along the material direction of delivery unchangeable.
2. A powder pneumatic conveying pump according to claim 1, wherein the conveying member (11) comprises a main shaft (114) provided along a central axis of the feed pipe (13) and a helical blade (116) provided around the main shaft (114).
3. A powder pneumatic conveying pump according to claim 2, wherein the outer edges of the helical blades (116) are in sealing engagement with the inner wall of the tapered section (131), the helical blades (116) being equidistant helical blades.
4. A powder pneumatic conveying pump according to claim 3, wherein the conveying member (11) further comprises a driving assembly capable of driving the main shaft (114) to rotate.
5. A powder pneumatic conveying pump according to claim 2, wherein the powder feeding device (10) further comprises an end cap (133) rotatably hinged at the outlet of the feeding tube (13), the end cap (133) being openable under the pushing of the material.
6. Pneumatic powder conveying pump according to claim 1, characterized in that the pneumatic conveying device (20) comprises a gas conveying pipe (21), wherein the gas conveying pipe (21) is coated on the outer side of the conveying pipe (13) and a gas flow passage is arranged between the gas conveying pipe and the conveying pipe (13).
7. A powder pneumatic conveying pump according to claim 6, wherein swirl vanes (134) extending along a spiral line around the central axis are provided in the gas flow passage.
8. Powder pneumatic conveying pump according to claim 7, characterized in that the two side edges of the swirl vanes (134) are respectively connected to the outer wall of the feed pipe (13) and the inner wall of the gas pipe (22).
9. A powder pneumatic conveying pump according to claim 6, wherein the air inlet pipe (22) is provided at an end remote from the outlet of the pneumatic conveying means (20).
10. The powder pneumatic conveying pump according to claim 1, further comprising a feeding pipe (121), wherein the feeding pipe (121) is vertically arranged, and the bottom end of the feeding pipe (121) is communicated with the feeding port.
CN202210088442.0A 2022-01-25 2022-01-25 Powder Pneumatic Conveying Pump Pending CN116534591A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119079562A (en) * 2024-11-08 2024-12-06 常州市嘉文环保设备有限公司 Positive pressure pneumatic conveying equipment and conveying method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119079562A (en) * 2024-11-08 2024-12-06 常州市嘉文环保设备有限公司 Positive pressure pneumatic conveying equipment and conveying method thereof
CN119079562B (en) * 2024-11-08 2025-01-24 常州市嘉文环保设备有限公司 Positive pressure pneumatic conveying equipment and conveying method thereof

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