CN211116616U - A multi-stage series mud type canned pump - Google Patents

A multi-stage series mud type canned pump Download PDF

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CN211116616U
CN211116616U CN201921901030.4U CN201921901030U CN211116616U CN 211116616 U CN211116616 U CN 211116616U CN 201921901030 U CN201921901030 U CN 201921901030U CN 211116616 U CN211116616 U CN 211116616U
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chamber
sliding bearing
circulation pipe
bearing assembly
hole
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栾晓颖
钱运德
师勇
黄昕昱
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Dalian Jinshi Pump Co ltd
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Abstract

一种多级串联式泥浆型屏蔽泵,属于屏蔽泵技术领域,所述屏蔽泵包括吸入端口、吐出端口、计量泵入口、换热器、循环管、叶轮、辅助叶轮等,所述泵轴的两端分别设有第一滑动轴承组件、第二滑动轴承组件,所述第二滑动轴承组件面对电机的一侧端面设有辅助叶轮,所述前轴承体上端开设径向孔第一孔、下端开设径向孔第二孔,所述后轴承体上端开设径向孔第三孔、下端开设径向孔第四孔,第二循环管(的另一端与换热器的出口相连。实现颗粒介质与滑动轴承、电机区域完全不接触,避免滑动轴承磨损、堵塞,定子屏蔽套划伤等现象发生,并对滑动轴承组件进行冷却与润滑。

Figure 201921901030

A multi-stage tandem mud-type canned pump, belonging to the technical field of canned pumps, the canned pump includes a suction port, a discharge port, a metering pump inlet, a heat exchanger, a circulation pipe, an impeller, an auxiliary impeller, etc. The two ends are respectively provided with a first sliding bearing assembly and a second sliding bearing assembly, the end face of the second sliding bearing assembly facing the motor is provided with an auxiliary impeller, and the upper end of the front bearing body is provided with a first radial hole, The lower end is provided with the second radial hole, the upper end of the rear bearing body is provided with the third radial hole, the lower end is provided with the fourth radial hole, and the other end of the second circulation pipe (the other end is connected with the outlet of the heat exchanger. The medium does not contact the sliding bearing and the motor area at all, so as to avoid wear and blockage of the sliding bearing and scratches on the stator shielding sleeve, and cool and lubricate the sliding bearing assembly.

Figure 201921901030

Description

一种多级串联式泥浆型屏蔽泵A multi-stage series mud type canned pump

技术领域technical field

本实用新型属于屏蔽泵技术领域,具体为一种多级串联式泥浆型屏蔽泵。The utility model belongs to the technical field of canned pumps, in particular to a multi-stage series-connected mud-type canned pump.

背景技术Background technique

无泄漏离心泵,可分为磁力驱动离心泵和屏蔽泵,它们在结构上只有静密封而无动密封,因此输送液体时能保证一滴不漏。适用于输送腐蚀性、易燃易爆、剧毒、有放射性的及极为贵重的液体;同时还适宜输送高压、高温、低温和高熔点等液体。随着环境保护要求的不断提高,屏蔽泵在国防、化工、石油等部门中得到广泛的应用。Leak-free centrifugal pumps can be divided into magnetic drive centrifugal pumps and canned pumps. They have only static seals and no dynamic seals in structure, so they can ensure that a drop of liquid is not leaked. It is suitable for conveying corrosive, flammable, explosive, highly toxic, radioactive and extremely valuable liquids; at the same time, it is also suitable for conveying liquids such as high pressure, high temperature, low temperature and high melting point. With the continuous improvement of environmental protection requirements, canned pumps are widely used in national defense, chemical, petroleum and other departments.

多级屏蔽泵适用于高扬程工况,但是一般多级屏蔽泵只能做到7级无法满足更高扬程的工况。因为随着叶轮级数的增加,泵的悬臂越长,泵轴承受的径向力越大。对于转动着的轴,径向力是个交变载荷,会使轴因疲劳而破坏增加泵轴疲劳断裂的风险。径向力的大小直接影响泵轴工作的稳定性,径向力过大将造成泵运转时振动、噪音大、轴承磨损快,严重影响泵使用寿命。Multi-stage canned pumps are suitable for high-lift conditions, but generally multi-stage canned pumps can only achieve 7 levels and cannot meet higher-lift conditions. Because as the number of impeller stages increases, the longer the pump cantilever is, the greater the radial force on the pump bearing. For a rotating shaft, the radial force is an alternating load that will cause the shaft to fail due to fatigue and increase the risk of fatigue fracture of the pump shaft. The magnitude of the radial force directly affects the stability of the pump shaft. Excessive radial force will cause vibration, loud noise, and rapid bearing wear during the operation of the pump, which will seriously affect the service life of the pump.

对于输送絮状、带有颗粒直径在0.01mm-2mm之间的颗粒介质等非清洁介质时,普通屏蔽泵满足不了输送要求。因为颗粒介质会划伤泵体、叶轮甚至定子屏蔽套而造成泄漏。介质颗粒容易堵塞碳化硅滑动轴承影响其自润滑性或者因颗粒较硬而磨损滑动轴承而造成其损坏。除此之外,介质颗粒还容易堵塞循环通路而影响电机循环流量,从而造成电机发热等不良状况。When conveying non-clean media such as flocculent and granular media with particle diameter between 0.01mm-2mm, ordinary canned pump cannot meet the conveying requirements. Leakage occurs because the particulate medium will scratch the pump body, impeller and even the stator shielding sleeve. The medium particles are easy to block the silicon carbide sliding bearing, which affects its self-lubricating property, or wears the sliding bearing due to the hard particles and causes its damage. In addition, the medium particles are also easy to block the circulation passage and affect the circulation flow of the motor, thereby causing the motor to heat up and other undesirable conditions.

实用新型内容Utility model content

为了解决上述技术问题,本实用新型提出一种多级串联式泥浆型屏蔽泵,这种多级串联式屏蔽泵最多可以做到12级,用于应对更高扬程的工况并且多级串联式的设计在小流量高扬程时具有很高的效率。在此基础上,增加计量泵与换热器等部件,实现颗粒介质与滑动轴承、电机区域完全不接触,避免滑动轴承磨损、堵塞,定子屏蔽套划伤等现象发生,并对滑动轴承组件进行冷却与润滑。In order to solve the above-mentioned technical problems, the utility model proposes a multi-stage series-type mud-type canned pump, which can achieve up to 12 stages at most, which is used to deal with the working conditions of higher head and the multi-stage series-type canned pump The design has high efficiency at small flow and high head. On this basis, components such as metering pumps and heat exchangers are added to achieve complete non-contact between the particle medium and the sliding bearing and motor area, so as to avoid the wear and blockage of the sliding bearing, and the scratches of the stator shielding sleeve. Cooling and lubrication.

本实用新型采用如下技术方案:The utility model adopts the following technical solutions:

一种多级串联式泥浆型屏蔽泵,所述屏蔽泵包括吸入端口、吐出端口、计量泵入口、换热器、第一循环管、第二循环管、第三循环管、叶轮、前轴承体、辅助叶轮、后轴承体、第一滑动轴承组件、第二滑动轴承组件、泵轴、电机,由吸入端口至吐出端口方向依次为第一腔室、第二腔室、第三腔室、第四腔室、第五腔室,所述泵轴的两端分别设有第一滑动轴承组件、第二滑动轴承组件,所述第二滑动轴承组件面对电机的一侧端面设有辅助叶轮,所述前轴承体上端开设径向孔第一孔、下端开设径向孔第二孔,第二腔室与第一循环管经第一孔连通,第一腔室与第三循环管经第二孔连通,第一循环管的另一端与换热器的入口相连,所述后轴承体上端开设径向孔第三孔 、下端开设径向孔第四孔,第二循环管与第四腔室经第三孔连通,第五腔室与第三循环管经第四孔连通,第二循环管的另一端与换热器的出口相连。A multi-stage tandem mud-type canned pump comprising a suction port, a discharge port, a metering pump inlet, a heat exchanger, a first circulation pipe, a second circulation pipe, a third circulation pipe, an impeller, and a front bearing body , auxiliary impeller, rear bearing body, first sliding bearing assembly, second sliding bearing assembly, pump shaft, motor, from the suction port to the discharge port direction are the first chamber, the second chamber, the third chamber, the first chamber Four chambers and a fifth chamber, the two ends of the pump shaft are respectively provided with a first sliding bearing assembly and a second sliding bearing assembly, and an auxiliary impeller is provided on the end face of the second sliding bearing assembly facing the motor, The upper end of the front bearing body is provided with a first radial hole, and the lower end is provided with a second radial hole. The second chamber and the first circulation pipe are connected through the first hole, and the first chamber and the third circulation pipe are connected through the second The other end of the first circulation pipe is connected to the inlet of the heat exchanger, the upper end of the rear bearing body is provided with a third radial hole, the lower end is provided with a fourth radial hole, and the second circulation pipe is connected to the fourth chamber. The fifth chamber is communicated with the third circulation pipe through the fourth hole, and the other end of the second circulation pipe is connected with the outlet of the heat exchanger.

进一步地,所述第一滑动轴承组件与前轴承体相配合,所述第二滑动轴承组件与后轴承体相配合。Further, the first sliding bearing assembly is matched with the front bearing body, and the second sliding bearing assembly is matched with the rear bearing body.

进一步地,所述辅助叶轮置于第一滑动轴承组件与第二滑动轴承组件之间,并紧靠第二滑动轴承组件的左端面。Further, the auxiliary impeller is placed between the first sliding bearing assembly and the second sliding bearing assembly, and abuts against the left end surface of the second sliding bearing assembly.

进一步地,所述第三循环管连通第一腔室、第五腔室,所述第一循环管连通第二腔室与换热器,所述第二循环管连通第四腔室与换热器。Further, the third circulation pipe communicates with the first chamber and the fifth chamber, the first circulation pipe communicates with the second chamber and the heat exchanger, and the second circulation pipe communicates with the fourth chamber and the heat exchange device.

进一步地,所述屏蔽泵具有十二级叶轮,于泵轴的左端与右端分别布置六只叶轮。Further, the canned pump has twelve-stage impellers, and six impellers are respectively arranged on the left end and the right end of the pump shaft.

所谓多级串联式设计就是将12级叶轮均布在轴的两端,使径向载荷分布更均匀,增强轴承的承载能力。此实用新型将以往单边12级叶轮所需的三至四套滑动轴承组件缩减至两套,不但降低多个滑动轴承同轴度的难度,还降低成本。此外增设计量泵与换热器等部件,用计量泵的补给压力将该泵划分出两个不同的独立循环,含颗粒介质走主循环通路,清洁介质走第二循环通路。The so-called multi-stage tandem design is to evenly distribute 12-stage impellers on both ends of the shaft to make the radial load distribution more uniform and enhance the bearing capacity of the bearing. The utility model reduces the three to four sets of sliding bearing assemblies required by the previous unilateral 12-stage impeller to two sets, which not only reduces the difficulty of coaxiality of multiple sliding bearings, but also reduces the cost. In addition, the metering pump and heat exchanger and other components are added, and the pump is divided into two different independent cycles by the supply pressure of the metering pump.

本实用新型的优点与效果为:The advantages and effects of the utility model are:

(1)一般多级屏蔽泵只能做到7级,而本实用新型能做到12级,适用更高扬程的工况。(1) The general multi-stage canned pump can only achieve 7 levels, but the utility model can achieve 12 levels, which is suitable for higher lift working conditions.

(2)此实用新型将以往单边12级叶轮所需的三至四套滑动轴承组件缩减至两套,不但降低多个滑动轴承同轴度的难度,还降低成本。(2) The utility model reduces the three to four sets of sliding bearing assemblies required by the previous unilateral 12-stage impeller to two sets, which not only reduces the difficulty of coaxiality of multiple sliding bearings, but also reduces the cost.

附图说明Description of drawings

图1为本实用新型一种多级串联式泥浆型屏蔽泵结构示意图。FIG. 1 is a schematic structural diagram of a multi-stage series-connected mud-type canned pump of the present invention.

图中部件:1为吸入端口,2为吐出端口,3为计量泵入口,4为换热器,5为第一循环管,6为第二循环管,7为第三循环管,8为叶轮,9为前轴承体,10为辅助叶轮,11为后轴承体,12为第一滑动轴承组件,13为第二滑动轴承组件,14为泵轴,15为第一腔室,16为第二腔室,17为第三腔室,18为第四腔室,19为第五腔室,20为第一孔,21为第二孔,22为第三孔,23为第四孔, 24为电机缝隙。Components in the figure: 1 is the suction port, 2 is the discharge port, 3 is the metering pump inlet, 4 is the heat exchanger, 5 is the first circulation pipe, 6 is the second circulation pipe, 7 is the third circulation pipe, 8 is the impeller , 9 is the front bearing body, 10 is the auxiliary impeller, 11 is the rear bearing body, 12 is the first sliding bearing assembly, 13 is the second sliding bearing assembly, 14 is the pump shaft, 15 is the first chamber, 16 is the second Chamber, 17 is the third chamber, 18 is the fourth chamber, 19 is the fifth chamber, 20 is the first hole, 21 is the second hole, 22 is the third hole, 23 is the fourth hole, 24 is the Motor gap.

具体实施方式Detailed ways

下面结合说明书附图对本新型产品进行详细说明。The new product will be described in detail below with reference to the accompanying drawings.

第一滑动轴承组件12、第二滑动轴承组件13分别放置在轴的泵轴14的两端,第一滑动轴承组件12与前轴承体9相配合,第二滑动轴承组件13与后轴承体11相配合,所述滑动轴承组件结构为现有技术。辅助叶轮10放置在第一滑动轴承组件12与第二滑动轴承组件13中间并紧靠第二滑动轴承组件13的左端面。在前轴承体9上端开设径向孔第一孔20、下端开设径向孔第二孔21,第一孔20连通第二腔室16与第一循环管5,第二孔21连通第一腔室15与第三循环管7,第一循环管5的另一端与换热器4的入口相连。在后轴承体11上端开设径向孔第三孔22 、下端开设径向孔第四孔23,第三孔22连通第二循环管6与第四腔室18,第四孔23连通第五腔室19与第三循环管7,第二循环管6的另一端与换热器4的出口相连。The first sliding bearing assembly 12 and the second sliding bearing assembly 13 are respectively placed on both ends of the pump shaft 14 of the shaft. The first sliding bearing assembly 12 is matched with the front bearing body 9 , and the second sliding bearing assembly 13 is matched with the rear bearing body 11 . Matchingly, the structure of the sliding bearing assembly is the prior art. The auxiliary impeller 10 is placed between the first sliding bearing assembly 12 and the second sliding bearing assembly 13 and abuts against the left end surface of the second sliding bearing assembly 13 . The upper end of the front bearing body 9 is provided with a first radial hole 20, and the lower end is provided with a second radial hole 21. The first hole 20 communicates with the second chamber 16 and the first circulation pipe 5, and the second hole 21 communicates with the first chamber The chamber 15 is connected with the third circulation pipe 7 and the other end of the first circulation pipe 5 is connected with the inlet of the heat exchanger 4 . The upper end of the rear bearing body 11 is provided with a third radial hole 22, and the lower end is provided with a fourth radial hole 23. The third hole 22 communicates with the second circulation pipe 6 and the fourth chamber 18, and the fourth hole 23 communicates with the fifth chamber The chamber 19 is connected with the third circulation pipe 7 and the other end of the second circulation pipe 6 is connected with the outlet of the heat exchanger 4 .

本实用新型的12级叶轮中每六只叶轮分别分布在泵轴14的左端与右端。本泵在计量泵的压力作用下有两个循环通路。主循环通路:含颗粒介质通过吸入端口1进入泵内,经过左端的六只叶轮加压通过第二孔21进入第三循环管7,通过第四孔23,再由右端的六只叶轮加压从吐出端口2流出。第二循环通路:为保证颗粒介质不进入第一滑动轴承组件12、第二滑动轴承组件13及电机缝隙24造成堵塞,磨损,需要计量泵加压。计量泵通入清洁介质,清洁介质通过计量泵入口3进入换热器4的出口管口第二循环管6,再由第三孔22进入到第四腔室18,此腔室内的清洁介质中一部分通过第二滑动轴承组件13的缝隙进入第五腔室19与颗粒介质汇流,并保证由第四孔23进入的颗粒介质不会进入到第二滑动轴承组件13内造成堵塞。另一部分清洁介质经过辅助叶轮10再次加压,进入第三腔室17,通过电机缝隙24进入第二腔室16,此部分中的大部分清洁介质再由第一孔20进入换热器4的入口管路第一循环管5进入换热器4进行热量交换。少部分清洁介质通过第一滑动轴承组件12的缝隙进入第一腔室15与颗粒介质汇流,并保证第一腔室内15的颗粒介质不会进入到第一滑动轴承组件12内。进行热量交换的清洁介质,对两个滑动轴承组件起润滑冷却作用,降低电机组件的温度使其不因温度过高而烧毁。In the 12-stage impeller of the present invention, every six impellers are respectively distributed on the left end and the right end of the pump shaft 14 . The pump has two circulation paths under the pressure of the metering pump. Main circulation passage: The particle-containing medium enters the pump through the suction port 1, is pressurized by the six impellers at the left end, enters the third circulation pipe 7 through the second hole 21, passes through the fourth hole 23, and is then pressurized by the six impellers at the right end. Outflow from spit port 2. Second circulation passage: In order to ensure that the particulate medium does not enter the first sliding bearing assembly 12, the second sliding bearing assembly 13 and the motor gap 24 to cause blockage and wear, a metering pump needs to be pressurized. The metering pump enters the cleaning medium, the cleaning medium enters the second circulation pipe 6 of the outlet nozzle of the heat exchanger 4 through the metering pump inlet 3, and then enters the fourth chamber 18 through the third hole 22, and the cleaning medium in this chamber is in the second circulation pipe 6. A part enters the fifth chamber 19 through the gap of the second sliding bearing assembly 13 to merge with the particulate medium, and ensures that the particulate medium entering through the fourth hole 23 will not enter the second sliding bearing assembly 13 and cause blockage. Another part of the cleaning medium is re-pressurized through the auxiliary impeller 10, enters the third chamber 17, and enters the second chamber 16 through the motor gap 24, and most of the cleaning medium in this part enters the heat exchanger 4 through the first hole 20. The first circulation pipe 5 of the inlet pipeline enters the heat exchanger 4 for heat exchange. A small part of the cleaning medium enters the first chamber 15 through the gap of the first sliding bearing assembly 12 to merge with the particulate medium, and ensures that the particulate medium in the first chamber 15 does not enter the first sliding bearing assembly 12 . The cleaning medium for heat exchange lubricates and cools the two sliding bearing assemblies, and reduces the temperature of the motor assembly so that it does not burn out due to excessive temperature.

Claims (5)

1.一种多级串联式泥浆型屏蔽泵,其特征在于,所述屏蔽泵包括吸入端口(1)、吐出端口(2)、计量泵入口(3)、换热器(4)、第一循环管(5)、第二循环管(6)、第三循环管(7)、叶轮(8)、前轴承体(9)、辅助叶轮(10)、后轴承体(11)、第一滑动轴承组件(12)、第二滑动轴承组件(13)、泵轴(14)、电机,由吸入端口(1)至吐出端口(2)方向依次为第一腔室(15)、第二腔室(16)、第三腔室(17)、第四腔室(18)、第五腔室(19),所述泵轴(14)的两端分别设有第一滑动轴承组件(12)、第二滑动轴承组件(13),所述第二滑动轴承组件(13)面对电机的一侧端面设有辅助叶轮(10),所述前轴承体(9)上端开设径向孔第一孔(20)、下端开设径向孔第二孔(21),第二腔室(16)与第一循环管(5)经第一孔(20)连通,第一腔室(15)与第三循环管(7)经第二孔(21)连通,第一循环管(5)的另一端与换热器(4)的入口相连,所述后轴承体(11)上端开设径向孔第三孔(22) 、下端开设径向孔第四孔(23),第二循环管(6)与第四腔室(18)经第三孔(22)连通,第五腔室(19)与第三循环管(7)经第四孔(23)连通,第二循环管(6)的另一端与换热器(4)的出口相连。1. A multi-stage tandem mud-type canned pump, characterized in that the canned pump comprises a suction port (1), a discharge port (2), a metering pump inlet (3), a heat exchanger (4), a first Circulation pipe (5), second circulation pipe (6), third circulation pipe (7), impeller (8), front bearing body (9), auxiliary impeller (10), rear bearing body (11), first sliding The bearing assembly (12), the second sliding bearing assembly (13), the pump shaft (14), and the motor, from the suction port (1) to the discharge port (2), are the first chamber (15) and the second chamber in order (16), a third chamber (17), a fourth chamber (18), and a fifth chamber (19), the two ends of the pump shaft (14) are respectively provided with first sliding bearing assemblies (12), A second sliding bearing assembly (13), the end face of the second sliding bearing assembly (13) facing the motor is provided with an auxiliary impeller (10), and the upper end of the front bearing body (9) is provided with a radial hole first hole (20), the lower end is provided with a second radial hole (21), the second chamber (16) is communicated with the first circulation pipe (5) through the first hole (20), and the first chamber (15) is connected to the third The circulation pipe (7) is communicated through the second hole (21), the other end of the first circulation pipe (5) is connected with the inlet of the heat exchanger (4), and the upper end of the rear bearing body (11) is provided with a third radial hole The hole (22) and the fourth hole (23) of the radial hole are opened at the lower end, the second circulation pipe (6) is communicated with the fourth chamber (18) through the third hole (22), and the fifth chamber (19) is connected with the fourth chamber (18). The third circulation pipe (7) is communicated through the fourth hole (23), and the other end of the second circulation pipe (6) is connected with the outlet of the heat exchanger (4). 2.根据权利要求1所述的一种多级串联式泥浆型屏蔽泵,其特征在于,所述第一滑动轴承组件(12)与前轴承体(9)相配合,所述第二滑动轴承组件(13)与后轴承体(11)相配合。2. The multi-stage tandem mud-type canned pump according to claim 1, characterized in that the first sliding bearing assembly (12) is matched with the front bearing body (9), and the second sliding bearing The assembly (13) is matched with the rear bearing body (11). 3.根据权利要求1所述的一种多级串联式泥浆型屏蔽泵,其特征在于,所述辅助叶轮(10)置于第一滑动轴承组件(12)与第二滑动轴承组件(13)之间,并紧靠第二滑动轴承组件(13)的左端面。3. A multi-stage tandem mud-type canned pump according to claim 1, characterized in that the auxiliary impeller (10) is placed in the first sliding bearing assembly (12) and the second sliding bearing assembly (13) between and abuts against the left end face of the second sliding bearing assembly (13). 4.根据权利要求1所述的一种多级串联式泥浆型屏蔽泵,其特征在于,所述第三循环管(7)连通第一腔室(15)、第五腔室(19),所述第一循环管(5)连通第二腔室(16)与换热器(4),所述第二循环管(6)连通第四腔室(18)与换热器(4)。4. The multi-stage serial mud-type canned pump according to claim 1, wherein the third circulation pipe (7) communicates with the first chamber (15) and the fifth chamber (19), The first circulation pipe (5) communicates with the second chamber (16) and the heat exchanger (4), and the second circulation pipe (6) communicates with the fourth chamber (18) and the heat exchanger (4). 5.根据权利要求1所述的一种多级串联式泥浆型屏蔽泵,其特征在于,所述屏蔽泵具有十二级叶轮,于泵轴(14)的左端与右端分别布置六只叶轮。5 . The multi-stage tandem mud-type canned pump according to claim 1 , wherein the canned pump has twelve-stage impellers, and six impellers are respectively arranged on the left and right ends of the pump shaft (14). 6 .
CN201921901030.4U 2019-11-06 2019-11-06 A multi-stage series mud type canned pump Active CN211116616U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111810439A (en) * 2020-08-18 2020-10-23 大连海密梯克泵业有限公司 Anti-dead-bearing structure of serial multistage pump sliding bearing and multistage canned motor pump
CN111927787A (en) * 2020-08-18 2020-11-13 大连海密梯克泵业有限公司 Multistage canned motor pump with inner loop hole

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111810439A (en) * 2020-08-18 2020-10-23 大连海密梯克泵业有限公司 Anti-dead-bearing structure of serial multistage pump sliding bearing and multistage canned motor pump
CN111927787A (en) * 2020-08-18 2020-11-13 大连海密梯克泵业有限公司 Multistage canned motor pump with inner loop hole

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