WO2022041302A1 - 一种离心泵机械密封清洗机构 - Google Patents

一种离心泵机械密封清洗机构 Download PDF

Info

Publication number
WO2022041302A1
WO2022041302A1 PCT/CN2020/113086 CN2020113086W WO2022041302A1 WO 2022041302 A1 WO2022041302 A1 WO 2022041302A1 CN 2020113086 W CN2020113086 W CN 2020113086W WO 2022041302 A1 WO2022041302 A1 WO 2022041302A1
Authority
WO
WIPO (PCT)
Prior art keywords
annular
filter element
pump body
cleaning mechanism
wall
Prior art date
Application number
PCT/CN2020/113086
Other languages
English (en)
French (fr)
Inventor
莫勇刚
Original Assignee
台州市天越机电有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 台州市天越机电有限公司 filed Critical 台州市天越机电有限公司
Publication of WO2022041302A1 publication Critical patent/WO2022041302A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning

Definitions

  • the utility model belongs to the technical field of machinery, and relates to a centrifugal pump, in particular to a centrifugal pump mechanical seal cleaning mechanism.
  • Centrifugal pumps work by rotating the impeller to cause centrifugal motion of water.
  • the existing centrifugal pump such as a horizontal multi-stage centrifugal pump disclosed in the Chinese patent library [application number: 201610119238.5], includes a pump body, a pump cover, a rotor part and an impeller installed in the pump body, and the pump cover is detachable.
  • the pump body is covered by the pump body, the rotor part is installed through the inside of the pump body, the two ends of the rotor part are outside the pump body, and the impeller is fixed on the rotor part, so
  • An additional piping system is also installed on the pump body, one end of the rotor assembly is provided with a coupling assembly and a front bearing assembly, the other end of the rotor assembly is provided with a bearing assembly, and the front bearing assembly is provided.
  • the part is located between the coupling part and the pump body, and a pump body sealing ring is arranged between the inner wall of the pump and the impeller.
  • centrifugal pump uses an additional pipeline system to introduce water into the pump body to flush the mechanical seal set between the rotor and the pump body, but when there are impurities in the water, the impurities flow to the mechanical seal with the additional pipeline system, causing serious problems. Will damage the mechanical seal, resulting in seal failure.
  • a centrifugal pump mechanical seal cleaning mechanism the centrifugal pump includes a pump body and a rotor horizontally arranged in the pump body, and between the two ends of the rotor and the pump body are provided with a mechanism for placing mechanical seals. Sealed annular cavity, the cleaning mechanism includes two channels set in the pump body and a spool tube set outside the pump body, the spool tube includes a left end, a right end, an upper end and a lower end, and one end of the two channels is respectively connected to the two annular cavities The left end and the right end respectively communicate with the other end of the two channels through the pipe body, and the lower end communicates with the inner cavity of the pump body.
  • the lower end extends into the lower end, the filter element and the upper end are detachably connected by threads, and a seal is formed between the filter element and the inner wall of the upper end; the outer wall of the lower end of the filter element is integrally formed with a ring-shaped blocking part 1, and the outer side of the annular blocking part 1 is formed.
  • a seal is formed between the wall and the inner side wall of the lower end, and the annular blocking part 1 is densely covered with filter holes penetrating vertically.
  • the parts are coaxially arranged, and the upper end of the cone head extends to a bottom wall of the annular blocking part.
  • the use process is as follows: the water flowing into the lower end from the cavity of the pump body is guided by the cone head into the filter hole 1, blocked and purified by the filter hole 1, and then enters the left end and the right end respectively, and then flows into the annular cavity through the pipe body and the flow channel to prevent the machine. Seal for cleaning.
  • the cone head Guided by the cone head with a diameter that gradually decreases downward, the water flow is diffused around, so that it flows into the filter hole 1 more smoothly and smoothly, so as to improve the filtering efficiency and effect, thereby preventing impurities from entering the annular cavity and damaging the mechanical seal.
  • the outer wall of the lower end of the filter element is also integrally formed with a second annular blocking portion, and there is a certain distance between the first annular blocking portion and the second annular blocking portion.
  • a seal is formed between the inner side walls of the lower end portion, the second annular blocking portion is densely covered with two vertically penetrating filter holes, and the diameter of the first filter hole is larger than that of the second filter hole.
  • Filter hole 1 and filter hole 2 are designed, and the pore size of filter hole 2 is smaller than that of filter hole 1, which can not only form two seals in the vertical direction to improve the water filtration effect, but also weaken the impact on the ring block part 1. Improve the structural stability of the filter element.
  • the inner side wall of the lower end portion is a cylindrical surface
  • the first annular blocking portion and the second annular blocking portion are circular rings that match the cylindrical surface
  • the first annular blocking portion and the annular blocking portion The outer side walls of the second part are in contact with the cylindrical surface and form a seal, which has the advantages of simple structure and convenient installation.
  • the pore diameter of the first filter hole is 0.6 mm to 1 mm, and the diameter of the second filter hole is 0.25 mm to 0.5 mm.
  • the middle of the top wall of the filter element is provided with a quadrilateral rotating hole, so that the tool can be inserted into the rotating filter element to clean the filter hole 1 and the filter hole 2.
  • annular groove is formed on the outer wall of the upper end of the filter element, the sealing ring is located in the annular groove, and the outer side wall of the sealing ring is in contact with the inner side wall of the upper end.
  • centrifugal pump mechanical seal cleaning mechanism has the following advantages:
  • Design filter hole 1 and filter hole 2, and filter hole 2 has a smaller pore size than filter hole 1, which can not only form two seals in the vertical direction to improve the water filtration effect, but also weaken the impact of the first ring block , to improve the structural stability of the filter element.
  • Figure 1 is a schematic diagram of the structure of a centrifugal pump.
  • FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 .
  • FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1 .
  • FIG. 4 is a schematic view of the structure of the filter element.
  • pump body 1a, channel; 2, rotor; 3, annular cavity; 4, cross pipe; 4a, upper end; 4b, lower end; 4c, left end; 4d, right end; 5, pipe body; 6, filter element; 6a, annular block part one; 6a1, filter hole one; 6b, cone head; 6c, annular block part two; 6c1, filter hole two; 6d, rotating hole; 7, sealing ring.
  • the centrifugal pump in the centrifugal pump mechanical seal cleaning mechanism, includes a pump body 1 and a rotor 2 horizontally arranged in the pump body 1, wherein both ends of the rotor 2 extend out of the pump body 1, and Both ends of the rotor 2 and the pump body 1 are provided with an annular cavity 3 for placing a mechanical seal.
  • the cleaning mechanism includes two channels 1a arranged in the pump body 1 and a four-way pipe 4 arranged outside the pump body 1 .
  • the spool 4 includes a left end portion 4c, a right end portion 4d, an upper end portion 4a and a lower end portion 4b, and the above four ends are communicated through the overflow cavity in the spool 4 .
  • the channel 1a is strip-shaped, one end of the two channels 1a is connected to the two annular cavities 3 respectively, the left end 4c and the right end 4d are respectively connected to the other end of the two channels 1a through the pipe body 5, and the lower end 4b is connected to the inner cavity of the pump body 1.
  • the left end portion 4c and the pipe body 5 and the right end portion 4d and the pipe body 5 are connected by means of threads;
  • the pump body 1 is provided with a threaded hole that penetrates vertically, and the lower end portion 4b is threadedly connected in the threaded hole, And sealing is achieved by winding the raw material tape.
  • a rod-shaped filter element 6 is vertically disposed in the upper end portion 4a, and preferably, the filter element 6 is straight rod-shaped.
  • the upper end of the filter element 6 protrudes from the upper end portion 4a, and the lower end of the filter element 6 extends into the lower end portion 4b.
  • the filter element 6 is detachably connected to the upper end portion 4a through threads, and a sealing ring 7 is used to form a seal between the filter element 6 and the inner wall of the upper end portion 4a.
  • annular groove is formed on the outer wall of the upper end of the filter element 6, the sealing ring 7 is located in the annular groove, and the outer side wall of the sealing ring 7 is abutted against the inner side wall of the upper end portion 4a, so that the gap between the filter element 6 and the upper end portion 4a is formed.
  • An annular blocking portion 1 6 a is integrally formed on the outer wall of the lower end of the filter element 6 , and the annular blocking portion 1 6 a and the filter element 6 are coaxially arranged.
  • a seal is formed between the outer side wall of the annular blocking portion 6a and the inner side wall of the lower end portion 4b, and the annular blocking portion 6a is densely covered with vertical penetrating filter holes 6a1.
  • the bottom wall of the filter element 6 is integrally formed with a cone head 6b with a diameter gradually decreasing downward. Guided by the conical head 6b with a gradually decreasing diameter downward, the water flow is diffused around, so that it flows into the filter hole 1 6a1 more smoothly and smoothly.
  • the outer wall of the lower end of the filter element 6 is also integrally formed with a second annular blocking portion 6c, the second annular blocking portion 6c and the filter element 6 are coaxially arranged, and there is a certain distance between the first annular blocking portion 6a and the second annular blocking portion 6c.
  • a seal is formed between the outer side wall of the second annular blocking portion 6c and the inner side wall of the lower end portion 4b.
  • the second annular blocking portion 6c is densely covered with vertically penetrating filter holes 2 6c1, and the diameter of the first filter hole 6a1 is larger than that of the second filter hole 6c1.
  • the filter hole 1 6a1 and the filter hole 2 6c1 are designed, and the filter hole 2 6c1 has a smaller diameter than the filter hole 1 6a1, so that two seals can be formed in the vertical direction to improve the water filtration effect, and it can weaken the annular blocking part 1 6a The impact received is to improve the structural stability of the filter element 6 .
  • the inner side wall of the lower end portion 4b is a cylindrical surface
  • the first annular blocking portion 6a and the second annular blocking portion 6c are annular shapes matching the cylindrical surfaces
  • the first annular blocking portion 6a and the second annular blocking portion 6c are in the shape of an annular shape.
  • the outer side walls are in contact with the cylindrical surface and form a seal, which has the advantages of simple structure and convenient installation.
  • the pore size of the first filter hole 6a1 is 0.6 mm to 1 mm
  • the pore size of the second filter hole 6c1 is 0.25 mm to 0.5 mm.
  • the pore size of the first filter hole 6a1 is 0.8 mm
  • the pore size of the second filter hole 6c1 is 0.3 mm.
  • the middle of the top wall of the filter element 6 is provided with a quadrilateral rotating hole 6d, so that a tool can be inserted into the rotating filter element 6 to clean the filter hole 1 6a1 and the filter hole 2 6c1.
  • the use process is as follows: the water flowing into the lower end 4b from the inner cavity of the pump body 1 is guided by the cone head 6b into the filter hole 1 6a1, blocked and purified by the filter hole 1 6a1, and then flows into the filter hole 2 6c1 for purification again, and then enters the left end respectively. And the right end, and then flow into the annular cavity 3 through the pipe body 5 and the flow channel to clean the mechanical seal.

Landscapes

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

Abstract

一种离心泵机械密封清洗机构，离心泵包括泵体（1）和转子（2），转子（2）两端和泵体（1）之间均设有用于放置机械密封的环形腔（3），清洗机构包括设于泵体（1）内的两通道（1a）以及设于泵体（1）外的四通管（4），四通管（4）包括左、右、上和下四个端部（4a、4b、4c、4d），通道（1a）一端连通环形腔（3），左、右端部（4c、4d）分别通过管体（5）连通两通道（1a）另一端，下端部（4b）连通泵体（1）内腔，上端部（4a）内设有杆状过滤件（6），过滤件（6）上端伸出上端部（4a），过滤件（6）下端延伸至下端部（4b）内，过滤件（6）与上端部（4a）通过螺纹可拆卸连接，过滤件（6）下端外壁上一体成型有环形挡部一（6a），环形挡部一（6a）上密布有呈竖直贯穿的滤孔一（6a1）；过滤件（6）底壁上一体成型有直径向下逐渐变小的锥头（6b），锥头（6b）和过滤件（6）同轴设置。通过上述设置，可防止机械密封受损。

Description

一种离心泵机械密封清洗机构 技术领域
本实用新型属于机械技术领域，涉及一种离心泵，特别是一种离心泵机械密封清洗机构。
 背景技术
离心泵是利用叶轮旋转而使水发生离心运动来工作的。
现有的离心泵如中国专利库公开的一种卧式多级离心泵【申请号：201610119238.5】，包括泵体、泵盖、转子部装和安装在泵体内的叶轮，所述泵盖可拆卸式地盖在所述泵体上，所述转子部装穿过所述泵体内部，所述转子部装的两端在所述泵体外，所述叶轮固定在所述转子部装上，所述泵体上还安装有附加管路系统，所述转子部装的一端设有联轴器部装和前轴承部装，所述转子部装的另一端设有轴承部装，所述前轴承部装位于所述联轴器部装和所述泵体之间，所述泵体内壁与所述叶轮之间设有泵体密封环。
 技术问题
上述的离心泵利用附加管路系统以引入泵体内的水来对转子和泵体之间设置的机械密封进行冲洗，但是当水中存在杂质时，杂质随附加管路系统流至机械密封，严重的会损伤机械密封，导致密封失效。
 技术解决方案
本实用新型的目的是针对现有的技术存在上述问题，提出了一种可防止机械密封受损的离心泵机械密封清洗机构。
本实用新型的目的可通过下列技术方案来实现：一种离心泵机械密封清洗机构，离心泵包括泵体和水平设于泵体内的转子，转子两端和泵体之间均设有用于放置机械密封的环形腔，本清洗机构包括设于泵体内的两通道以及设于泵体外的四通管，四通管包括左端部、右端部、上端部和下端部，两通道一端分别连通两环形腔，左端部和右端部分别通过管体连通两通道另一端，下端部连通泵体内腔，其特征在于，上端部内竖直设有呈杆状的过滤件，过滤件上端伸出上端部，过滤件下端延伸至下端部内，过滤件与上端部通过螺纹可拆卸连接，且过滤件和上端部内壁之间通过密封圈形成密封；过滤件下端外壁上一体成型有环形挡部一，环形挡部一外侧壁与下端部内侧壁之间形成密封，且环形挡部一上密布有呈竖直贯穿的滤孔一；过滤件底壁上一体成型有直径向下逐渐变小的锥头，锥头和过滤件同轴设置，且锥头上端延伸至环形挡部一底壁处。
使用过程如下：由泵体内腔流入下端部内的水，经锥头引导进入滤孔一，经滤孔一阻挡净化后分别进入左端和右端，然后通过管体和流道引导流入环形腔以对机械密封进行清洗。
在直径向下逐渐变小的锥头引导下，使水流向四周扩散，使其较平稳且顺畅地流入滤孔一，来提高过滤效率和效果，从而防止杂质进入到环形腔内损伤机械密封。
在上述的离心泵机械密封清洗机构中，上述的过滤件下端外壁上还一体成型有环形挡部二，且环形挡部一和环形挡部二之间存在一定距离，环形挡部二外侧壁与下端部内侧壁之间形成密封，环形挡部二上密布有呈竖直贯穿的滤孔二，且滤孔一的孔径大于滤孔二。设计滤孔一和滤孔二，且滤孔二孔径小于滤孔一，这样既可在竖直方向上形成两道密封，来提高水过滤效果，又可弱化环形挡部一受到的冲击，来提高过滤件的结构稳定性。
在上述的离心泵机械密封清洗机构中，所述的下端部内侧壁为圆柱面，环形挡部一和环形挡部二均呈与圆柱面匹配的圆环形，且环形挡部一和环形挡部二的外侧壁均与圆柱面贴靠并形成密封，具有结构简单、安装方便的优点。
在上述的离心泵机械密封清洗机构中，所述的滤孔一的孔径为0.6mm～1mm，滤孔二的孔径为0.25mm～0.5mm。
在上述的离心泵机械密封清洗机构中，所述的过滤件的顶壁中部设有呈四边形的旋转孔，以便于工具插入旋转过滤件，来清洗滤孔一和滤孔二。
在上述的离心泵机械密封清洗机构中，所述的过滤件的上端外壁上开设有环形槽，上述的密封圈位于环形槽内，且密封圈的外侧壁与上端部的内侧壁相抵。
 有益效果
与现有技术相比，本离心泵机械密封清洗机构具有以下优点：
1、在直径向下逐渐变小的锥头引导下，使水流向四周扩散，使其较平稳且顺畅地流入滤孔一，来提高过滤效率和效果，从而防止杂质进入到环形腔内损伤机械密封。
2、设计滤孔一和滤孔二，且滤孔二孔径小于滤孔一，这样既可在竖直方向上形成两道密封，来提高水过滤效果，又可弱化环形挡部一受到的冲击，来提高过滤件的结构稳定性。
 附图说明
图1是离心泵的结构示意图。
图2是图1中A处的放大结构示意图。
图3是图1中B处的放大结构示意图。
图4是过滤件的结构示意图。
图中，1、泵体；1a、通道；2、转子；3、环形腔；4、四通管；4a、上端部；4b、下端部；4c、左端部；4d、右端部；5、管体；6、过滤件；6a、环形挡部一；6a1、滤孔一；6b、锥头；6c、环形挡部二；6c1、滤孔二；6d、旋转孔；7、密封圈。
 本发明的最佳实施方式
以下是本实用新型的具体实施例并结合附图，对本实用新型的技术方案作进一步的描述，但本实用新型并不限于这些实施例。
如图1和图2所示，在离心泵机械密封清洗机构中，离心泵包括泵体1和水平设于泵体1内的转子2，其中，转子2两端均伸出泵体1，且转子2两端和泵体1之间均设有用于放置机械密封的环形腔3。
清洗机构包括设于泵体1内的两通道1a以及设于泵体1外的四通管4。其中，四通管4包括左端部4c、右端部4d、上端部4a和下端部4b，且上述四个端部通过四通管4内的过流腔连通。通道1a呈条形，两通道1a一端分别连通两环形腔3，左端部4c和右端部4d分别通过管体5连通两通道1a另一端，下端部4b连通泵体1内腔。在本实施例中，左端部4c和管体5以及右端部4d和管体5均采用螺纹方式连接；泵体1上设有竖直贯穿的螺纹孔，下端部4b螺纹连接在螺纹孔内，并通过缠绕生料带的方式实现密封。
如图3和图4所示，上端部4a内竖直设有呈杆状的过滤件6，且优选过滤件6呈直杆状。过滤件6上端伸出上端部4a，过滤件6下端延伸至下端部4b内。过滤件6与上端部4a通过螺纹可拆卸连接，且过滤件6和上端部4a内壁之间通过密封圈7形成密封。具体来说，过滤件6的上端外壁上开设有环形槽，密封圈7位于环形槽内，且密封圈7的外侧壁与上端部4a的内侧壁相抵，使过滤件6和上端部4a之间形成可靠密封。过滤件6下端外壁上一体成型有环形挡部一6a，且环形挡部一6a和过滤件6同轴设置。环形挡部一6a外侧壁与下端部4b内侧壁之间形成密封，且环形挡部一6a上密布有呈竖直贯穿的滤孔一6a1。过滤件6底壁上一体成型有直径向下逐渐变小的锥头6b，锥头6b和过滤件6同轴设置，且锥头6b上端延伸至环形挡部一6a底壁处。在直径向下逐渐变小的锥头6b引导下，使水流向四周扩散，使其较平稳且顺畅地流入滤孔一6a1。
进一步说明，过滤件6下端外壁上还一体成型有环形挡部二6c，环形挡部二6c和过滤件6同轴设置，且环形挡部一6a和环形挡部二6c之间存在一定距离。环形挡部二6c外侧壁与下端部4b内侧壁之间形成密封，环形挡部二6c上密布有呈竖直贯穿的滤孔二6c1，且滤孔一6a1的孔径大于滤孔二6c1。设计滤孔一6a1和滤孔二6c1，且滤孔二6c1孔径小于滤孔一6a1，这样既可在竖直方向上形成两道密封，来提高水过滤效果，又可弱化环形挡部一6a受到的冲击，来提高过滤件6的结构稳定性。
在本实施例中，下端部4b内侧壁为圆柱面，环形挡部一6a和环形挡部二6c均呈与圆柱面匹配的圆环形，且环形挡部一6a和环形挡部二6c的外侧壁均与圆柱面贴靠并形成密封，具有结构简单、安装方便的优点。滤孔一6a1的孔径为0.6mm～1mm，滤孔二6c1的孔径为0.25mm～0.5mm。优选滤孔一6a1的孔径为0.8mm；滤孔二6c1的孔径为0.3mm。
如图4所示，过滤件6的顶壁中部设有呈四边形的旋转孔6d，以便于工具插入旋转过滤件6，来清洗滤孔一6a1和滤孔二6c1。
使用过程如下：由泵体1内腔流入下端部4b内的水，经锥头6b引导进入滤孔一6a1，经滤孔一6a1阻挡净化后流入滤孔二6c1再次进行净化，接着分别进入左端和右端，然后通过管体5和流道引导流入环形腔3以对机械密封进行清洗。
本文中所描述的具体实施例仅仅是对本实用新型精神作举例说明。本实用新型所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本实用新型的精神或者超越所附权利要求书所定义的范围。

Claims (6)

  1. 一种离心泵机械密封清洗机构，离心泵包括泵体（1）和水平设于泵体（1）内的转子（2），转子（2）两端和泵体（1）之间均设有用于放置机械密封的环形腔（3），本清洗机构包括设于泵体（1）内的两通道（1a）以及设于泵体（1）外的四通管（4），四通管（4）包括左端部（4c）、右端部（4d）、上端部（4a）和下端部（4b），两通道（1a）一端分别连通两环形腔（3），左端部（4c）和右端部（4d）分别通过管体（5）连通两通道（1a）另一端，下端部（4b）连通泵体（1）内腔，其特征在于，上端部（4a）内竖直设有呈杆状的过滤件（6），过滤件（6）上端伸出上端部（4a），过滤件（6）下端延伸至下端部（4b）内，过滤件（6）与上端部（4a）通过螺纹可拆卸连接，且过滤件（6）和上端部（4a）内壁之间通过密封圈（7）形成密封；过滤件（6）下端外壁上一体成型有环形挡部一（6a），环形挡部一（6a）外侧壁与下端部（4b）内侧壁之间形成密封，且环形挡部一（6a）上密布有呈竖直贯穿的滤孔一（6a1）；过滤件（6）底壁上一体成型有直径向下逐渐变小的锥头（6b），锥头（6b）和过滤件（6）同轴设置，且锥头（6b）上端延伸至环形挡部一（6a）底壁处。
  2. 根据权利要求1所述的离心泵机械密封清洗机构，其特征在于，上述的过滤件（6）下端外壁上还一体成型有环形挡部二（6c），且环形挡部一（6a）和环形挡部二（6c）之间存在一定距离，环形挡部二（6c）外侧壁与下端部（4b）内侧壁之间形成密封，环形挡部二（6c）上密布有呈竖直贯穿的滤孔二（6c1），且滤孔一（6a1）的孔径大于滤孔二（6c1）。
  3. 根据权利要求2所述的离心泵机械密封清洗机构，其特征在于，所述的下端部（4b）内侧壁为圆柱面，环形挡部一（6a）和环形挡部二（6c）均呈与圆柱面匹配的圆环形，且环形挡部一（6a）和环形挡部二（6c）的外侧壁均与圆柱面贴靠并形成密封。
  4. 根据权利要求2或3所述的离心泵机械密封清洗机构，其特征在于，所述的滤孔一（6a1）的孔径为0.6mm～1mm，滤孔二（6c1）的孔径为0.25mm～0.5mm。
  5. 根据权利要求1所述的离心泵机械密封清洗机构，其特征在于，所述的过滤件（6）的顶壁中部设有呈四边形的旋转孔（6d）。
  6. 根据权利要求1所述的离心泵机械密封清洗机构，其特征在于，所述的过滤件（6）的上端外壁上开设有环形槽，上述的密封圈（7）位于环形槽内，且密封圈（7）的外侧壁与上端部（4a）的内侧壁相抵。
PCT/CN2020/113086 2020-08-27 2020-09-02 一种离心泵机械密封清洗机构 WO2022041302A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021829865.6 2020-08-27
CN202021829865.6U CN212838641U (zh) 2020-08-27 2020-08-27 一种离心泵机械密封清洗机构

Publications (1)

Publication Number Publication Date
WO2022041302A1 true WO2022041302A1 (zh) 2022-03-03

Family

ID=75141771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/113086 WO2022041302A1 (zh) 2020-08-27 2020-09-02 一种离心泵机械密封清洗机构

Country Status (2)

Country Link
CN (1) CN212838641U (zh)
WO (1) WO2022041302A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113074148B (zh) * 2021-05-17 2022-09-09 方霄泵业有限公司 水泵机械密封冲洗结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203944178U (zh) * 2014-07-01 2014-11-19 北京克达思科技有限公司 污水处理罐
CN205956074U (zh) * 2016-08-29 2017-02-15 利欧集团湖南泵业有限公司 一种高温高压热网循环泵机械密封保护系统
JP2018188961A (ja) * 2017-04-28 2018-11-29 株式会社荏原製作所 軸封装置、軸封装置組合体、軸封システム及び異常検知方法
CN109441828A (zh) * 2018-12-13 2019-03-08 山东淄泵泵业有限公司 环保免维护紧凑型卧式双吸中开离心泵
CN209115408U (zh) * 2018-08-22 2019-07-16 南京梅山冶金发展有限公司 一种自冲洗离心泵机械密封静态冲洗装置
CN210715124U (zh) * 2019-06-27 2020-06-09 南京日新流体技术有限公司 双端面离心泵自清洗式机械密封装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203944178U (zh) * 2014-07-01 2014-11-19 北京克达思科技有限公司 污水处理罐
CN205956074U (zh) * 2016-08-29 2017-02-15 利欧集团湖南泵业有限公司 一种高温高压热网循环泵机械密封保护系统
JP2018188961A (ja) * 2017-04-28 2018-11-29 株式会社荏原製作所 軸封装置、軸封装置組合体、軸封システム及び異常検知方法
CN209115408U (zh) * 2018-08-22 2019-07-16 南京梅山冶金发展有限公司 一种自冲洗离心泵机械密封静态冲洗装置
CN109441828A (zh) * 2018-12-13 2019-03-08 山东淄泵泵业有限公司 环保免维护紧凑型卧式双吸中开离心泵
CN210715124U (zh) * 2019-06-27 2020-06-09 南京日新流体技术有限公司 双端面离心泵自清洗式机械密封装置

Also Published As

Publication number Publication date
CN212838641U (zh) 2021-03-30

Similar Documents

Publication Publication Date Title
WO2022041302A1 (zh) 一种离心泵机械密封清洗机构
KR101364155B1 (ko) 필터 조립체
CN206156805U (zh) 滤芯及反渗透净水器
CN110723833A (zh) 一种新型大通量四合一滤芯结构
CN202700371U (zh) 一体式逆渗透净水过滤器
WO2022188731A1 (zh) 滤芯总成以及净水器
CN202082092U (zh) 一种隔膜泵的泵盖
CN206688534U (zh) 一种ro膜中心管、ro膜滤芯和纯水机
CN214661127U (zh) 射流器及具有其的净水机
CN205461324U (zh) 滤芯及应用该滤芯的过滤器
CN204918083U (zh) 三水路滤芯及净水机
CN211620018U (zh) 一种ro膜滤芯组件
CN110433659B (zh) 一种侧面进水反渗透膜元件
CN217555856U (zh) 反渗透膜滤芯、滤芯组件及其净水器
CN204852562U (zh) 一种排气式净水龙头
CN211624373U (zh) 一种流量检测阀
CN207187214U (zh) 一种净水机用具有过滤功能的可拆卸连接头
CN202606038U (zh) 滤芯组件及具有其的净水机
CN212959310U (zh) 一种立式离心泵
CN212594355U (zh) 一种新型直通套管式排液装置
CN215996094U (zh) 一种集成式分离过滤装置
CN219815541U (zh) 一种污水处理输送管道滤清结构
CN203620823U (zh) 一种出水整流器
CN213488393U (zh) 一种管线机用反渗透膜进水过滤系统
CN216432034U (zh) 一种下拆式高效空气过滤装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20950971

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20950971

Country of ref document: EP

Kind code of ref document: A1