WO2019029503A1 - 一种新型卫生自吸泵 - Google Patents

一种新型卫生自吸泵 Download PDF

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Publication number
WO2019029503A1
WO2019029503A1 PCT/CN2018/099084 CN2018099084W WO2019029503A1 WO 2019029503 A1 WO2019029503 A1 WO 2019029503A1 CN 2018099084 W CN2018099084 W CN 2018099084W WO 2019029503 A1 WO2019029503 A1 WO 2019029503A1
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pipe
gas
elbow
inlet pipe
water
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PCT/CN2018/099084
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English (en)
French (fr)
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曹后存
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曹后存
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Publication of WO2019029503A1 publication Critical patent/WO2019029503A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock

Definitions

  • the invention relates to a sanitary fluid conveying device suitable for high gas content or self-priming working conditions, in particular to a novel sanitary self-priming pump, belonging to the field of light industry (food, dairy, beverage, pharmaceutical, etc.) machinery.
  • the sanitary self-priming pump used in food (beer, beverage, dairy, etc.) and CIP cleaning system in the pharmaceutical processing industry is a traditional vortex type self-priming pump.
  • the biggest disadvantage of the vortex type self-priming pump is low efficiency and high noise. Can not adapt to the current green energy-saving requirements for energy saving, noise reduction, and urgently need new energy-efficient products.
  • the present invention provides a high-efficiency, low-noise new sanitary self-priming pump suitable for a CIP cleaning system.
  • a novel sanitary self-priming pump comprising a motor, a centrifugal pump connected to the motor and a circulating return line; the centrifugal pump is provided with an inlet pipe and an outlet pipe; the end of the inlet pipe An inlet pipe joint is installed at the end, and an outlet pipe joint is installed at an end of the outlet pipe; the inlet pipe includes a straight pipe section connected to the centrifugal pump, and the outer pipe of the straight pipe section of the inlet pipe is connected to the inlet pipe joint through an elbow, The water pipe joint is higher than the straight pipe section of the water inlet pipe;
  • the circulation return line comprises a gas-liquid separation chamber, the gas-liquid separation chamber is in an intermediate section of the circulation return line, and the upper end inlet of the gas-liquid separation chamber is connected to the outlet pipe through the return line, and the lower end outlet of the gas-liquid separation chamber passes a water seal elbow is connected to the straight pipe section of the water inlet pipe; the water seal elbow is provided with a closed water ball, and a water return pipe matched with the closed water ball is connected between the water seal elbow and the straight pipe section of the water inlet pipe Reducer pipe.
  • the elbow includes a water inlet lower elbow connected to an outer end of the inlet pipe straight pipe section, and an inlet pipe upper elbow connected to an outer end of the inlet pipe lower elbow; the inlet pipe joint is connected to the inlet pipe The outer end of the upper elbow.
  • the circulating return line includes a return pipe straight pipe section connected to the outlet pipe; the other end of the return pipe straight pipe section is connected to the return pipe elbow through a quick joint on the return pipe; the other end of the return pipe elbow is connected to the gas a reducing pipe on the liquid separating chamber; the upper end inlet of the gas-liquid separating chamber is connected to the reducing pipe on the gas-liquid separating chamber through a gas-liquid separating chamber quick joint.
  • a gas-liquid separation chamber lower reducing pipe is connected between the lower end outlet of the gas-liquid separation chamber and the water seal elbow.
  • the return pipe reducer pipe and the straight pipe section of the inlet pipe are connected by a quick joint under the return pipe, and the quick joint under the return pipe is directly below the straight pipe section of the inlet pipe.
  • the invention adds a circulating return pipeline system with automatic opening and closing, gas-liquid separation and water sealing functions on the basis of an ordinary sanitary centrifugal pump, that is, a gas-liquid separation chamber, a water seal elbow, a water-tight ball and the like, so that the ordinary
  • the sanitary centrifugal pump has a self-priming function. It overcomes the shortcomings of low efficiency and high noise of the traditional vortex hygienic self-priming pump, and the efficiency is increased by more than 20%, and the noise is reduced by more than 12 decibels, which not only ensures the hygienic performance, but also has the performance characteristics of the centrifugal pump.
  • the same pump can change the speed or
  • the outer diameter of the impeller meets the requirements of different working conditions, and is more adaptable to the working conditions than the traditional vortex hygienic self-priming pump. It is an alternative to the vortex hygienic self-priming pump.
  • the invention Compared with the prior art, the invention has the advantages of ingenious design, simple processing, no wearing parts, reliable use, stable performance, strong practicability, high efficiency, energy saving and noise reduction.
  • Figure 1 is a front elevational view of an embodiment of the present invention
  • Figure 2 is a left side view of the embodiment of the present invention.
  • Figure 3 is a perspective view (first perspective view) of the embodiment of the present invention.
  • FIG 4 is a perspective view (second perspective view) of a first embodiment of the present invention.
  • a new type of sanitary self-priming pump has a leg fixed under the motor 20, and the output end of the motor 20 is connected to the centrifugal pump 18 through a motor and pump connecting section 19, and the centrifugal pump 18 is provided with a water inlet pipe and The water outlet pipe 16; the centrifugal pump 18 is powered by the motor 20 to deliver fluid.
  • This part is prior art and will not be described in detail.
  • the water inlet pipe comprises a straight pipe section 4 connected to the centrifugal pump 18, and the outer end of the straight pipe section 4 of the inlet pipe is connected with an upwardly curved 90° inlet pipe lower elbow 3, and the upper end of the inlet pipe lower elbow 3 is connected with a bending 90°.
  • the water pipe is connected to the elbow 2, and the water pipe upper elbow 2 is connected to the water pipe joint 1.
  • the inlet pipe joint 1 is higher than the straight pipe section 4 of the inlet pipe, and after the first time the centrifugal pump 18 is added with the liquid, the inlet pipe can ensure that a sufficient amount of circulating liquid can be stored in the inlet pipe, the pump chamber, and the return water pipe for the next use. Self-priming function.
  • a circulating return line is connected between the straight pipe section of the water inlet pipe and the outlet pipe 16, and the circulating return pipe is specifically:
  • the outlet pipe 16 is vertically upward, and a return pipe straight pipe section 15 is connected to the side wall of the outlet pipe 16, and the other end of the return pipe straight pipe section 15 is connected to the return pipe elbow 13 which is bent downward by 90° through a quick pipe joint 14 on the return pipe;
  • the lower end of the return pipe elbow 13 is fixed with a tapered inner and outer diameter reducing pipe 12 having a narrow upper and a lower width.
  • the gas-liquid separation chamber 10 is vertically arranged, and the upper end inlet of the gas-liquid separation chamber 10 is connected to the lower end of the reduction tube 12 on the gas-liquid separation chamber through a gas-liquid separation chamber quick joint 11.
  • the lower end outlet of the gas-liquid separation chamber 10 is connected with a gas-liquid separation chamber lower reduction pipe 9 having a narrow upper and a lower width, and a water seal elbow 7 bent at 180° is connected to the lower end of the lower diameter reduction pipe 9 of the gas-liquid separation chamber.
  • the other end of the water seal elbow 7 is connected with a conical return pipe reducer 6 having a narrow upper and a lower width.
  • a water-tight ball 8 having a diameter smaller than the inner diameter of the water-sealed elbow 7 is installed in the water-sealed elbow 7, and the diameter of the closed-water ball 8 is larger than the minimum inner diameter of the return pipe reducer 6.
  • the upper end of the return pipe reducer pipe 6 and the straight pipe section 4 of the water inlet pipe are connected by a return pipe lower quick joint 5, and the quick joint 5 of the return pipe is located directly below the straight pipe section 4 of the water inlet pipe.
  • the water seal elbow is lower than the straight pipe section of the inlet pipe, and the quick joint under the return pipe is directly at the lower part of the straight pipe section of the inlet pipe, so that the water seal elbow can effectively retain the liquid and play a water seal function, so that the gas-liquid separator chamber 10
  • the gas cannot be returned to the straight pipe section 4 of the inlet pipe through the return pipe, ensuring that only the returning liquid does not return gas during the self-priming process, so as to achieve the self-priming function.
  • the gas-liquid mixture flowing out from the outlet pipe 16 flows under gravity to the gas-liquid separation chamber 10 through the straight pipe section 15 of the return pipe, and the gas-liquid separation is completed in the gas-liquid separation chamber 10. Due to the action of gravity, the gas automatically moves upwards, and is discharged through the straight pipe section 15 and the outlet pipe 16 of the return pipe, and the liquid medium flows down the lower return pipe to the straight pipe section 4 of the inlet pipe for circulation.
  • the closed water ball 8 adopts a rubber ball.
  • the rubber ball In the self-priming condition, the rubber ball is located at the lowermost position of the water seal elbow 7 due to gravity, and the return water pipe is in an open state.
  • the new sanitary self-priming pump completes the self-priming condition, the closed The pressure of the pipelines on both sides of the water ball 8 has changed greatly.
  • the pressure of the return water pipeline on the side of the gas-liquid separation chamber 10 is rapidly increased, the pressure in the water inlet pipe is rapidly decreased, and the water flow in the return water pipe is rapidly flowing to the water inlet pipe to push the closed water ball 8 Move to the return pipe reducer 6 and close the return line.
  • the circulation return line is composed of a quick joint 5 under the return pipe, a return pipe reducer 6, a water seal elbow 7, a closed water ball 8 (in the water seal elbow 7), a gas reduction pipe under the gas-liquid separation chamber 9, and a gas
  • the liquid separation chamber 10, the gas-liquid separation chamber quick joint 11, the gas-liquid separation chamber variable diameter pipe 12, the return pipe elbow 13, the return pipe quick joint 14 and the return pipe straight pipe 15 are sequentially connected to form a pipe system.
  • the quick joint 14 on the return pipe, the quick-connecting joint 11 of the gas-liquid separation chamber and the quick joint 5 under the return pipe are not only components of the pipeline but also a quick-disconnecting connection of the circulating return pipe.
  • the novel sanitary self-priming pump is produced in sections at three quick joints, which is easy to manufacture, easy to assemble and easy to join, making the production, installation and disassembly more convenient, especially in the repair and maintenance, it can be quickly disassembled and installed, which is convenient for inspection and observation.
  • the return pipe reducer 6, the gas-liquid separation chamber reducer 9, the gas-liquid separation chamber reducer 12 and other tapered reducer can effectively reduce the pipeline loss and increase the fluid flow. Uniformity, avoiding dead water areas, eliminating hygienic corners and ensuring hygienic performance.
  • the closed water ball falls to the lowest position of the water seal elbow due to gravity, the circulation return line is opened, and the gas and liquid in the water inlet pipe are mixed in the pump chamber under the action of the impeller in the centrifugal pump. It is pumped into the outlet pipe. Due to gravity, the gas-liquid mixture flows into the gas-liquid separation chamber through the straight pipe section of the return pipe, and the mixed liquid is separated in the gas-liquid separation chamber. Also due to the action of gravity, the gas rises along the straight pipe section of the return pipe and is discharged into the outlet pipe. The liquid descends through the water seal elbow and enters the straight pipe section of the inlet pipe, so that the liquid circulates between the circulation return pipe and the pump, and continuously enters the water.
  • the gas in the tube is discharged until the gas in the water inlet line is completely discharged, completing the self-priming condition of the pump.
  • the pressure in the pump outlet pipe increases rapidly, and the liquid flow rate increases.
  • the gas-liquid separation chamber enters the water seal elbow, pushes the closed water ball up and closes the return water pipeline, and the pump enters the centrifugal pump working condition. If the pumped liquid is itself a high-volume liquid, such as a CIP liquid, the pump can pump the liquid at high gas content and operate under self-priming conditions.
  • the new sanitary self-priming pump not only maintains the hygienic performance requirements of the sanitary centrifugal pump, but also transforms the ordinary sanitary centrifugal pump into a sanitary pump with self-priming function, which can well meet the current CIP cleaning in the food processing and pharmaceutical industries.
  • the needs of the system It can also be widely used to transport gas-liquid mixed liquids and pump liquids under self-priming conditions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种新型卫生自吸泵，包括电机（20）、离心泵（18）和循环回流管路；循环回流管路由水封弯管（7）、闭水球（8）、气液分离室（10）等组成，两端分别和泵的入水管和出水管（16）连通，循环回流管路具有自动开闭、气液分离和水封功能，使普通卫生离心泵成为具有自吸功能的新型卫生自吸泵。该泵在满足卫生性能的前提下，克服了传统自吸泵效率低、噪音大的缺点，并且该自吸泵具有离心泵的性能特点，通过改变转速或改变叶轮外径来满足不同的工况要求；制作工艺简单，无易损件，使用可靠，性能稳定，实用性强，高效节能降噪。

Description

一种新型卫生自吸泵 技术领域
本发明涉及一种适用于高含气量或有自吸工况要求的卫生级流体输送装置，具体是一种新型卫生自吸泵，属于轻工(食品、乳品、饮料、制药等)机械领域。
背景技术
目前食品(啤酒、饮料、乳品等)、制药加工行业的CIP清洗系统使用的卫生自吸泵是传统的旋涡式卫生自吸泵，旋涡式卫生自吸泵的最大缺点是效率低、噪音大，不能适应当前节能降耗、降噪的绿色环保要求，急需相应新的高效节能产品。
发明内容
为解决上述技术问题，本发明提供一种适用于CIP清洗系统的高效率、低噪音的新型卫生自吸泵。
本发明通过以下技术方案实现：一种新型卫生自吸泵，包括电机、与电机连接的离心泵和循环回流管路；所述离心泵上设有入水管和出水管；所述入水管的端部安装有入水管接头，出水管的端部安装有出水管接头；所述入水管包括与离心泵连接的入水管直管段，入水管直管段外端通过弯管连接所述入水管接头，入水管接头高于入水管直管段；
循环回流管路包括气液分离室，所述气液分离室在循环回流管路的中间节段，气液分离室的上端入口通过回流管路连通至出水管，气液分离室的下端出口通过一个水封弯管连通至入水管的入水管直管段；所述水封弯管内装有闭水球，在水封弯管与入水管直管段之间连接有与所述闭水球相配合的回水管变径管。
其进一步是：所述弯管包括连接在入水管直管段外端的入水管下弯头，和连接在入水管下弯头外端的入水管上弯头；所述入水管接头连接在所述入水管上弯头的外端。
所述循环回流管路包括与出水管连接的回水管直管段；所述回水管直 管段的另一端通过一个回水管上快速接头连接回水管弯头；所述回水管弯头的另一端连接气液分离室上变径管；所述气液分离室的上端入口通过一个气液分离室快速接头连接所述气液分离室上变径管。
所述气液分离室的下端出口与水封弯管之间连接有气液分离室下变径管。
所述回水管变径管与入水管直管段之间通过一个回水管下快速接头连接，回水管下快速接头位于入水管直管段的正下方。
本发明在普通的卫生离心泵的基础上，增加具有自动开闭、气液分离和水封功能的循环回流管路系统，即气液分离室、水封弯管、闭水球等部件，使得普通卫生离心泵具有自吸功能。克服了传统旋涡卫生自吸泵效率低、噪音高的缺点，效率提高20％以上，噪音降低12分贝以上，不仅能保证卫生性能，同时具有离心泵的性能特点，同一台泵可以通过改变转速或叶轮外径来满足不同工况的要求，比传统旋涡卫生自吸泵对工况的适应性更强，是旋涡卫生自吸泵的替代产品。
与现有技术相比，本发明的有益效果是：构思巧妙，加工制作简单，无易损件，使用可靠，性能稳定，实用性强，高效节能降噪。
附图说明
图1是本发明实施例一主视图；
图2是本发明实施例一左视图；
图3是本发明实施例一立体示意图(第一视角)；
图4是本发明实施例一立体示意图(第二视角)。
图中：1、入水管接头；2、入水管上弯头；3、入水管下弯头；4、入水管直管段；5、回水管下快速接头；6、回水管变径管；7、水封弯管；8、闭水球；9、气液分离室下变径管；10、气液分离室；11、气液分离室快速接头；12、气液分离室上变径管；13、回水管弯头；14、回水管上快速接头；15、回水管直管段；16、出水管；17、出水管接头；18、离心泵；19、电机与泵连接段；20、电机。
具体实施方式
以下是本发明的一个具体实施例，现结合附图对本发明做进一步说明。
结合图1至图4所示，一种新型卫生自吸泵，电机20下固定有支腿，电机20输出端通过电机与泵连接段19连接离心泵18，离心泵18上设有入水管和出水管16；离心泵18通过电机20来提供动力，以输送流体。此部分为现有技术，不做累述。
入水管包括与离心泵18连接的入水管直管段4，入水管直管段4外端连接有向上弯曲的90°的入水管下弯头3，入水管下弯头3上端连接有弯曲90°的入水管上弯头2，入水管上弯头2连接入水管接头1。入水管接头1高于入水管直管段4，入水管在离心泵18首次加入液体后，保证下次使用时入水管、泵腔、及回水管路内仍能保存足够量的循环液体，以便完成自吸功能。
在入水管直管段和出水管16之间连接一个循环回流管路，循环回流管路具体是：
出水管16竖直向上，在出水管16侧壁连通有回水管直管段15，回水管直管段15另一端通过一个回水管上快速接头14连接有向下弯曲90°的回水管弯头13；回水管弯头13下端固定有上窄下宽的锥形的气液分离室上变径管12。气液分离室10竖直布置，气液分离室10的上端入口通过一个气液分离室快速接头11连接在气液分离室上变径管12下端。气液分离室10的下端出口连接有上宽下窄的锥形的气液分离室下变径管9，气液分离室下变径管9下端连接有弯曲180°的水封弯管7，水封弯管7另一端连接有上窄下宽的锥形的回水管变径管6。在水封弯管7安装一个直径小于水封弯管7内径的闭水球8，闭水球8直径大于回水管变径管6的最小内径。回水管变径管6上端与入水管直管段4之间通过一个回水管下快速接头5连接，回水管下快速接头5位于入水管直管段4的正下方。
水封弯管低于入水管直管段，回水管下快速接头在入水管直管段的正下部，使水封弯管能有效保存液体，起到水封作用，使气液分离器室10内的气体无法通过回水管路回流到入水管直管段4，确保回水管路在自吸过程中只回流液体不回流气体，以便实现自吸功能。
离心泵18启动后，在叶轮的作用下，从出水管16流出的气液混合液在重力作用下经过回水管直管段15流向气液分离室10，在气液分离室10 内完成气液分离，由于重力作用，气体自动向上移动，经回水管直管段15、出水管16排出，液体介质沿下部的回水管路向下流动至入水管直管段4进行再次循环。
闭水球8采用橡胶球，在自吸工况下橡胶球由于重力作用位于水封弯头7的最下部位置，回水管路是开路状态，当新型卫生自吸泵完成自吸工况后，闭水球8两侧管路的压力发生了较大变化，气液分离室10侧的回水管路压力迅速增大，入水管内的压力迅速下降，回水管内的水流急剧流向入水管，推动闭水球8向回水管变径管6移动，关闭回水管路。
循环回流管路是由回水管下快速接头5、回水管变径管6、水封弯管7、闭水球8(在水封弯管7内)、气液分离室下变径管9、气液分离室10、气液分离室快速接头11、气液分离室上变径管12、回水管弯头13、回水管上快速接头14、回水管直管段15依次连接组成的管路系统。回水管上快速接头14、气液分离室快速接头11和回水管下快速接头5不仅是管路的组成部分，同时也是循环回流管路快速拆卸的连接件。本新型卫生自吸泵在三处快速接头处分段制作，易于制作、易于装配、易于联结，使制作、安装、拆卸更加方便，特别在检修时可以快速拆卸、安装，方便检修、观察。
在不同直径管路之间采用回水管变径管6、气液分离室下变径管9、气液分离室上变径管12等锥形变径管，能够有效减少管路损失，增加流体流动的均匀性，避免出现死水区，消除卫生死角，保证卫生性能。
工作原理：
在自吸工况，闭水球由于重力作用下落至水封弯管的最低位置，循环回流管路打开，入水管路内的气体和液体在离心泵内叶轮的作用下在泵腔内进行混合并被压送至出水管内，由于重力作用，气液混合液通过回水管直管段流入气液分离室，混合液在气液分离室内分离。同样由于重力作用，气体上升沿回水管直管段进入出水管被排出，液体下降通过水封弯头进入入水管直管段，就这样液体在循环回流管路和泵之间进行循环，并不断把入水管内的气体排出，直至入水管路的气体被完全排出，完成泵的自吸工况。当气体被完全排出后，泵出水管内压力迅速增大，液体流速增大，通过气液分离室进入水封弯管，推动闭水球上移关闭回水管路，泵进入离心泵工况。如果抽送的液体本身是高含气量液体，如CIP液，则泵可以在高 含气量下抽送液体，在自吸工况下工作。
该新型卫生自吸泵不仅保持了卫生级离心泵的卫生性能要求，而且把普通的卫生型离心泵改造成了具有自吸功能的卫生泵，能很好的满足目前食品加工、制药行业CIP清洗系统的需要。还可广泛用于输送气液混合液体及在自吸工况下抽送液体。

Claims (5)

  1. 一种新型卫生自吸泵，包括电机(20)和与电机(20)连接的离心泵(18)，所述离心泵(18)上设有入水管和出水管(16)；所述入水管的端部安装有入水管接头(1)，出水管(16)的端部安装有出水管接头(17)；
    其特征在于：
    所述入水管包括与离心泵(18)连接的入水管直管段(4)，入水管直管段(4)的外端通过弯管连接所述入水管接头(1)，入水管接头(1)高于入水管直管段(4)；
    所述新型卫生自吸泵还包括循环回流管路；
    所述循环回流管路包括气液分离室(10)；所述气液分离室(10)的上端入口通过回流管路连通至出水管(16)，气液分离室(10)的下端出口通过一个水封弯管(7)连通至入水管中的入水管直管段(4)；所述水封弯管(7)低于入水管直管段，内装有闭水球(8)，在水封弯管(7)与入水管直管段(4)之间连接有与所述闭水球(8)相配合的回水管变径管(6)。
  2. 根据权利要求1所述的一种新型卫生自吸泵，其特征在于：所述弯管包括连接在入水管直管段(4)外端的入水管下弯头(3)，和连接在入水管下弯头(3)外端的入水管上弯头(2)；所述入水管接头(1)连接在所述入水管上弯头(2)的外端。
  3. 根据权利要求1所述的一种新型卫生自吸泵，其特征在于：所述回流管路包括与出水管(16)连接的回水管直管段(15)；所述回水管直管段(15)的另一端通过一个回水管上快速接头(14)连接有回水管弯头(13)；所述回水管弯头(13)的另一端连接有气液分离室上变径管(12)；所述气液分离室(10)的上端入口通过一个气液分离室快速接头(11)连接所述气液分离室上变径管(12)。
  4. 根据权利要求1所述的一种新型卫生自吸泵，其特征在于：所述气 液分离室(10)的下端出口与水封弯管(7)之间连接有气液分离室下变径管(9)。
  5. 根据权利要求1所述的一种新型卫生自吸泵，其特征在于：所述回水管变径管(6)与入水管直管段(4)之间通过一个回水管下快速接头(5)连接，回水管下快速接头(5)位于入水管直管段(4)的正下方。
PCT/CN2018/099084 2017-08-10 2018-08-07 一种新型卫生自吸泵 WO2019029503A1 (zh)

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