CN106286421A - 一种耐腐蚀的射流泵 - Google Patents

一种耐腐蚀的射流泵 Download PDF

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CN106286421A
CN106286421A CN201610817562.4A CN201610817562A CN106286421A CN 106286421 A CN106286421 A CN 106286421A CN 201610817562 A CN201610817562 A CN 201610817562A CN 106286421 A CN106286421 A CN 106286421A
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/04—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/043—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • B32B2553/02—Shock absorbing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

本发明涉及一种耐腐蚀的射流泵，包括箱体、离心泵和喷射器，所述喷射器安装在箱体的顶部，所述箱体的一侧上部设有溢流管，所述离心泵的入水口与箱体连通，所述离心泵的出水口与喷射器连通；所述喷射器包括依次连接的直管、缩管、喉管和扩散管，所述直管内设有***该直管并延伸至缩管的喷嘴，所述直管上设有连通管，所述连通管穿出箱体后与流体源连接；所述连通管包括陶瓷管和贴覆于陶瓷管周壁的橡胶层，所述陶瓷管和橡胶层之间涂敷树脂胶；所述喷嘴包括依次连接的入口、收缩段和扩张段，所述扩张段离收缩段远处的口径较离收缩段近处的口径更大。该射流泵不但具有较强的耐腐蚀性，而且工作效率很高。

Description

一种耐腐蚀的射流泵
技术领域
本发明涉及一种射流泵，属于泵体技术领域。
背景技术
射流泵利用流体来传递能量和质量的真空获得装置，采用有一定压力的水流通过喷嘴射流喷出，由于喷射水流速特别高，将压力能转变为速度能，使吸气区压力降低产生真空，在大气压的作用下将物料带走。射流泵具有加工制作简单、运行安全、维修方便、效果较好等优点，可适应不同的工作环境和要求，甚至可直接抽吸高浓度腐蚀性液体，并可以应用于减少环境污染改善工作条件等方面，有着机械式、水环式真空泵不可比拟的优点。
但目前射流泵中用的输送管多为柔性软管，耐腐蚀性较差，不适合恶劣环境下的生产应用。
发明内容
本发明要解决技术问题是：提供一种耐腐蚀的射流泵，该射流泵可以减少连通管的更换周期，从而降低生产成本。
为了解决上述技术问题，本发明提出的技术方案是：一种射流泵，包括箱体、离心泵和喷射器，所述喷射器安装在箱体的顶部，所述箱体的一侧上部设有溢流管，所述离心泵的入水口与箱体连通，所述离心泵的出水口与喷射器连通；所述喷射器包括依次连接的直管、缩管、喉管和扩散管，所述直管内设有***该直管并延伸至缩管的喷嘴，所述直管上设有连通管，所述连通管穿出箱体后与流体源连接；所述连通管包括陶瓷管和贴覆于陶瓷管周壁的橡胶层，所述陶瓷管和橡胶层之间涂敷树脂胶；所述喷嘴包括依次连接的入口、收缩段和扩张段，所述扩张段离收缩段远处的口径较离收缩段近处的口径更大。
上述技术方案的改进是：所述橡胶层由依次排列的橡胶片贴敷在陶瓷管周壁上组合而成。
上述技术方案的进一步改进是：所述树脂胶为环氧树脂胶。
作为优选方案，所述扩张段为锥形的空心圆管。进一步地，所述空心圆管的锥度为60-80度。
根据流体的连续性定理，当流体连续不断而稳定地流过一个粗细不等的管道时，由于管道中任何一部分的流体都不能中断或挤压起来，因此在同一时间内，流进任一切面的流体的质量和从另一切面流出的流体质量是相等的。另根据伯努利定理，流体在一个管道中流动时，流速大的地方压力小，流速小的地方压力大。当表面突出时，流管较细，流速加快，压力降低。
因此，当流体通过特定的扩张段时，在扩张段的边沿形成漩涡，此漩涡使扩张段出口附近形成低压区，流体就朝着低压区不断流入，可以得到很大的增速效果。本发明与文氏管结构的扩张器相比，流体的流速更快，扩张段出口后侧形成的“真空”区得到更低的负压，在大气的压力下可以使流体更快的输出到射流器的扩散管中，从而提高了射流泵的工作效率。
本发明上述射流泵的工作方法，包括：在使用时，所述连通管与流体源（如水源）连通，喷射器在喷嘴出口后侧形成真空区，流体在大气压的作用下流向真空区，并与喷射器喷出的流体进行混合，然后从溢流管流出，从而实现流体的传输。
本发明由于采用陶瓷管作为连通管，与传输的液体直接接触，充分利用陶瓷表面光滑而且容易制造的优点，从而减小水流在流道内流动的阻力，提高了射流泵的效率，从而降低了生产成本。由于陶瓷有较强的耐腐蚀性，因而本发明采用陶瓷管作为连通管，提高了连通管的耐腐蚀性，降低了连通管的更换频率，从而进一步降低了生产成本。另外，在陶瓷管周壁包敷有橡胶层，利用橡胶的高弹性和高黏性，可以使其具有良好的减震和缓冲性能，克服陶瓷固有的脆性大、耐冲击能力低的缺点，提高了连通管的可靠性。
附图说明
下面结合附图对本发明作进一步说明。
图1是本发明实施例的结构示意图。
图2是图1中连通管的结构示意图。
图3是图1中喷射器的结构示意图。
具体实施方式
实施例
本实施例的射流泵如图1所示，包括箱体1、离心泵3和喷射器4，喷射器4安装在箱体1的顶部，箱体1的一侧上部设有溢流管5，离心泵3的入水口与箱体1连通，离心泵3的出水口与喷射器4连通；喷射器4上设有连通管6，连通管6穿出箱体1后与流体源连接。
如图2所示，本实施例中连通管6包括陶瓷管6-1和贴覆于陶瓷管周壁的橡胶层6-2，陶瓷管6-1和橡胶层6-2之间涂敷有树脂胶，树脂胶可以采用环氧树脂胶。本实施例在陶瓷管6-1周壁包敷有橡胶层6-2，利用橡胶的高弹性和高黏性，可以使其具有良好的减震和缓冲性能，克服陶瓷固有的脆性大、耐冲击能力低的缺点，提高了连通管的可靠性。本实施例中橡胶层6-2可以采用依次排列的橡胶片贴敷在陶瓷管周壁上组合而成。
如图3所示，本实施例中喷射器4包括依次连接的直管4-1、缩管4-2、喉管4-3和扩散管4-4，直管4-1内设有***该直管4-1并延伸至缩管4-2的喷嘴，直管4-1上设有与流体源连接的连通管6；喷嘴包括依次连接的入口4-6、收缩段4-7和扩张段4-8，扩张段4-8离收缩段4-7远处的口径较离收缩段4-7近处的口径更大。
本实施例中扩张段4-8为锥形的空心圆管，空心圆管的锥度为70度。当然空心圆管的锥度可以选择60-80度之间的任意值。
本实施例中箱体1内还可以设置竖直的隔离板2，溢流管5和喷射器4分居隔离板2的两侧，离心泵3的入水口与溢流管5位于隔离板2的相同侧。这样可以避免喷射器4喷出的高速水流引起的水面波动影响离心泵3的平稳运转。
本发明不局限于上述实施例所述的具体技术方案，除上述实施例外，本发明还可以有其他实施方式。凡采用等同替换形成的技术方案，均为本发明要求的保护范围。

Claims (1)

1.一种射流泵，包括箱体、离心泵和喷射器，所述喷射器安装在箱体的顶部，所述箱体的一侧上部设有溢流管，所述离心泵的入水口与箱体连通，所述离心泵的出水口与喷射器连通；所述喷射器包括依次连接的直管、缩管、喉管和扩散管，所述直管内设有***该直管并延伸至缩管的喷嘴，所述直管上设有连通管，所述连通管穿出箱体后与流体源连接；其特征在于：所述连通管包括陶瓷管和贴覆于陶瓷管周壁的橡胶层，所述陶瓷管和橡胶层之间涂敷树脂胶；所述喷嘴包括依次连接的入口、收缩段和扩张段，所述扩张段离收缩段远处的口径较离收缩段近处的口径更大；
箱体内设有竖直的隔离板，溢流管和喷射器分居隔离板的两侧，离心泵的入水口与溢流管位于隔离板的相同侧。
CN201610817562.4A 2014-08-07 2014-08-07 一种耐腐蚀的射流泵 Pending CN106286421A (zh)

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