WO2022147929A1 - Irrigateur buccal et pompe d'aspiration d'eau - Google Patents

Irrigateur buccal et pompe d'aspiration d'eau Download PDF

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Publication number
WO2022147929A1
WO2022147929A1 PCT/CN2021/090068 CN2021090068W WO2022147929A1 WO 2022147929 A1 WO2022147929 A1 WO 2022147929A1 CN 2021090068 W CN2021090068 W CN 2021090068W WO 2022147929 A1 WO2022147929 A1 WO 2022147929A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
cavity
storage tank
suction pump
piston assembly
Prior art date
Application number
PCT/CN2021/090068
Other languages
English (en)
Chinese (zh)
Inventor
麦华彬
Original Assignee
爱几度（深圳）科技有限公司
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 爱几度（深圳）科技有限公司 filed Critical 爱几度（深圳）科技有限公司
Publication of WO2022147929A1 publication Critical patent/WO2022147929A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/18—Lubricating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication

Definitions

  • the present invention relates to a tooth cleaning appliance, and more particularly, to a dental irrigator and a water pump.
  • the present invention relates to a tooth cleaning appliance, and more particularly, to a tooth irrigator and a water pump.
  • the tooth piercer in the related art needs to add lubricating oil between the body of the water pump and the piston assembly to facilitate the movement of the piston assembly.
  • lubricating oil is injected in advance, and when the lubricating oil is used up, it cannot be added by itself, which leads to wear of the piston, which in turn reduces the smoothness of the movement of the piston assembly.
  • the technical problem to be solved by the present invention is to provide an improved water pump, and further provide an improved dental irrigator.
  • the technical solution adopted by the present invention to solve the technical problem is: constructing a pumping pump, including a pump body and a piston assembly that can be reciprocated and arranged in the pump body;
  • An accommodating cavity for accommodating lubricating oil to lubricate the piston assembly when the piston assembly reciprocates is provided on the pump body and/or on the piston assembly;
  • the suction pump further includes an oil injection channel communicating with the accommodating cavity to inject lubricating oil into the accommodating cavity.
  • the side wall of the pump body is provided with an oil injection pipe that communicates with the accommodating cavity to inject lubricating oil into the accommodating cavity;
  • the oil injection channel is arranged in the oil injection pipe.
  • the oil injection pipe extends toward the outside of the pump body; an access port for receiving lubricating oil is provided at one end of the oil injection pipe away from the accommodating cavity;
  • the access port is detachably provided with a cap.
  • the suction pump further includes an oil storage tank communicated with the oil injection channel.
  • one end of the oil storage tank away from the oil filling channel is provided with an opening for loading lubricating oil
  • the opening is detachably provided with a cap.
  • the suction pump further comprises a power mechanism for pressing the lubricating oil in the oil storage tank into the oil injection channel;
  • the power mechanism includes a pressing rod extending into the oil storage tank from an end away from the oil injection channel and capable of pressing lubricating oil into the oil injection channel through reciprocating motion.
  • the oil storage tank is provided with an opening, and the oil storage tank is provided with a reciprocating motion in the oil storage tank to push out the lubricating oil in the oil storage tank from the oil filling passage to the accommodating cavity pusher;
  • the pump body is provided with a pumping channel for the piston assembly to pump out water; the piston assembly reciprocates in the pump body so that water is injected into the pumping channel to form power to drive the pusher to reciprocate.
  • the oil storage tank is arranged on the piston assembly, and communicates with the accommodating cavity through the oil filling channel, and the pushing member is arranged close to the water pumping channel.
  • the oil storage tank is arranged on the outer side of the pump body, and the opening of the oil storage tank is provided with a communication channel that communicates with the water pumping channel;
  • the pushing member includes the lubricating oil in the oil storage tank. The pushing part pushed out and the matching part arranged through the communication channel.
  • the accommodating cavity includes a first cavity and a second cavity, and the first cavity and the second cavity are arranged in sequence along the movement direction of the piston assembly;
  • the oil storage tank is arranged on the outer side of the pump body, and the oil filling channel includes a first oil filling channel connecting the oil storage cavity and the first cavity, and connecting the oil storage cavity and the second cavity The second oil filling channel of the body.
  • the accommodating cavity is provided with a protrusion that divides the accommodating cavity into the first cavity and the second cavity.
  • the protrusion is disposed on the inner side wall of the pump body and moves relative to the piston assembly to change the volumes of the first cavity and the second cavity.
  • the protrusion is arranged on the piston assembly and is driven by the piston assembly to reciprocate to change the volumes of the first cavity and the second cavity.
  • the present invention also constructs a dental irrigator, comprising a casing, the suction pump of the present invention arranged in the casing, and a nozzle assembly arranged on the casing and connected to the suction pump.
  • the water pump can inject into the accommodating cavity on the pump body and/or on the piston assembly at a set time by setting the oil injection channel lubricating oil, so as to avoid the wear of the piston caused by the exhaustion of the lubricating oil in the pump body, and the inconvenience or scrapping of the tooth punch.
  • Fig. 1 is the sectional view of the tooth punch in the first embodiment of the present invention
  • Fig. 2 is the partial structure schematic diagram of the tooth piercing device shown in Fig. 1;
  • Fig. 3 is the structural schematic diagram of the dental irrigator in the second embodiment of the present invention.
  • Fig. 4 is the partial structure schematic diagram of the tooth piercing device shown in Fig. 3;
  • Fig. 5 is the structural schematic diagram of the dental irrigator in the third embodiment of the present invention.
  • Fig. 6 is the partial structure schematic diagram of the tooth punch shown in Fig. 5;
  • Fig. 7 is the structural schematic diagram of the tooth irrigator in the fourth embodiment of the present invention.
  • Fig. 8 is the partial structure schematic diagram of the tooth piercing device shown in Fig. 7;
  • Fig. 9 is the structural schematic diagram of the dental irrigator in the fifth embodiment of the present invention.
  • Fig. 10 is the partial structure schematic diagram of the tooth piercing device shown in Fig. 9;
  • FIG. 11 is an enlarged schematic view of a partial structure of the dental irrigator shown in FIG. 10 .
  • the scaler may include a housing 20 , a sump pump 10 and a nozzle assembly 30 .
  • the casing 20 can be used for accommodating the suction pump 10, and can form a liquid storage chamber for storing cleaning liquid.
  • the suction pump 10 can be arranged in the casing 10 and can be used to extract the cleaning liquid in the liquid storage cavity of the casing 10 .
  • the nozzle assembly 30 can be disposed at one end of the housing 10 and can be connected to the suction pump 10 for spraying cleaning liquid.
  • the suction pump 10 can be used for a dental irrigator.
  • the suction pump 10 may include a pump body 11 and a piston assembly 12 .
  • the pump body 11 is a hollow structure, which can be loaded into the piston assembly 12 and can be reciprocated by the piston assembly 12 .
  • the piston assembly 12 can be disposed in the pump body 11 , and can reciprocate in the pump body 11 , thereby pumping the cleaning liquid in the liquid storage chamber in the housing 10 to the nozzle assembly 30 .
  • the piston assembly 12 may include a piston 121 and a waterproof sealing sleeve 122 .
  • the piston 121 can be reciprocatingly disposed in the pump body 11
  • the waterproof sealing sleeve 122 can be sleeved on the piston 121
  • the waterproof sealing sleeve 122 can be an elastic structure.
  • the waterproof sealing cover 122 may be a silicone cover or a rubber cover.
  • the maximum radial dimension of the waterproof sealing sleeve 122 can be adapted to the radial dimension of the pump body 11 , and can then abut with the inner side wall of the pump body 11 to form a sealed connection, thereby avoiding the possibility of a
  • the cavity communicates with the cavity at the other end of the piston 121 to prevent liquid from leaking from the cavity at one end of the piston 121 to the cavity at the other end of the piston 122 .
  • an accommodating cavity 111 can be provided between the inner side wall of the pump body 11 and the piston assembly 12 , and the accommodating cavity 111 can be located on the waterproof sealing sleeve 122 and can be located along the waterproof sealing sleeve
  • the circumferential direction of the 122 is disposed on the outer peripheral wall of the waterproof sealing sleeve 122, and the accommodating cavity 111 may be an annular cavity.
  • the accommodating cavity 111 can be used for accommodating lubricating oil.
  • an oil injection pipe 13 may be provided on the side wall of the pump body 11, and the oil injection pipe 13 may extend toward the outside of the pump body 11.
  • the oil injection pipe 131 may extend along the It extends radially towards the outside of the pump body 11 to the side wall of the housing 20 .
  • the oil filling pipe 131 can be communicated with the accommodating cavity 111 , so that lubricating oil can be injected into the accommodating cavity 111 through the oil filling pipe 131 , and then lubrication can be added to the accommodating cavity 111 in time at a set time or when the lubricating oil is used up oil, to avoid the wear of the piston 121, which would lead to inconvenience or scrapping of the tooth piercer.
  • an oil injection channel 131 may be provided on the side wall of the pump body 11 , and the oil injection channel 131 may be formed in the oil injection pipe 13 and communicated with the accommodating cavity 111 to inject into the accommodating cavity 111 lubricating oil.
  • the oil injection channel 131 may be tapered, and its radial dimension may be gradually reduced toward one end of the accommodating cavity 111 , so as to increase the oil injection pressure.
  • an access port can be provided at one end of the oil injection pipe 13 away from the accommodating cavity 111 , and the access port can be used for lubricating oil.
  • the suction pump may further include a cap 14 , which is detachably disposed at the access port, and can cover the oil filling channel 131 when oil filling is not required to avoid oil leakage. When lubricating oil needs to be injected, the cap 14 can be opened for injecting lubricating oil.
  • the cap 14 can be detachably connected to the access port by providing a snap structure. Of course, it can be understood that, in some other embodiments, the cap 14 can also be screwed with the access port by setting a threaded structure.
  • FIG. 3 and FIG. 4 show the second embodiment of the dental irrigator of the present invention, which is different from the first embodiment in that it further includes an oil storage tank 15 .
  • the oil storage tank 15 can be disposed on the outer side wall of the pump body 11 , can be located in the casing 11 , and can extend to the top wall of the casing 11 along the longitudinal direction of the casing 11 .
  • the oil storage tank 15 may be communicated with the oil filling channel 131, and the oil storage tank 15 may be used for storing lubricating oil.
  • one end of the oil storage tank 15 away from the oil filling channel 131 may be provided with an opening, and the opening may be opened on the top wall of the housing 11 , and the opening may be used to supply lubricating oil into the oil storage tank 15 .
  • a cap 14 can be provided on the opening, and the cap 14 can be detachably connected to the opening.
  • the cap 14 can be used to cover the opening to avoid oil leakage.
  • the cap 14 can be opened for refueling.
  • the cap 14 can be detachably connected to the opening by providing a snap structure, or can be detachably connected to the opening by providing a threaded structure.
  • the suction pump may further include a power mechanism, and the power mechanism 16 may be disposed in the oil storage tank 15 to be used for pressing the lubricating oil in the oil storage tank 15 into the oil injection channel 131 .
  • the power mechanism 16 can be a pressure rod, the pressure rod can extend into the oil storage tank 15 from an end away from the oil filling channel 131 , and can reciprocate along the longitudinal direction of the oil storage tank 15 , and then can The lubricating oil is pressed into the oil filling channel 131 , so that the accommodating cavity 111 is filled with oil.
  • the user can open the cap 14 when the set period or when the lubricating oil in the accommodating cavity 111 is used up, and use a tool, such as a screwdriver, to press the pressure rod, so that the lubricating oil can be injected into the accommodating cavity 111 , to prevent the wear of the piston 121 due to the drying of the lubricating oil.
  • a tool such as a screwdriver
  • FIG. 5 and FIG. 6 show the third embodiment of the dental irrigator of the present invention, which is different from the second embodiment in that the suction pump can automatically fill the lubricating oil into the accommodating cavity 111 , so that the oil filling can be improved. convenience.
  • the pump body 11 can be provided with a water pumping channel 112 , the water pumping channel 112 can communicate with the nozzle assembly 30 , and the water pumping channel 112 can be used for the piston assembly 12 to pump water to the nozzle assembly 30 .
  • the oil storage tank 15 may be disposed on the piston assembly 12 , and specifically, the oil storage chamber 15 may be disposed on the piston rod of the piston 12 and may be disposed along the axial direction of the piston rod.
  • the oil filling pipe 13 can be disposed on the inner side wall of the pump body 11 and can extend radially toward the waterproof sealing sleeve 122 , so that the liquid storage cavity 15 is communicated with the accommodating cavity 111 .
  • there may be a plurality of the oil injection pipes 13 and the plurality of oil injection pipes 13 may be arranged at intervals along the circumferential direction of the pump body 11 .
  • the oil storage tank 15 may be provided with an opening, and the opening may be flush with the end surface of the piston rod of the piston 12 .
  • a pushing member 151 may be disposed in the oil storage tank 15, and the pushing member 151 may be located in the oil storage tank 15 and may reciprocate along the movement direction of the piston assembly 12, and may move the oil storage tank 15 through the reciprocating motion.
  • the lubricating oil in the oil is pushed out from the oil injection channel 131 into the accommodating cavity 111 .
  • the cross-sectional size of the pushing member 151 can be adapted to the cross-sectional size of the oil storage tank 15 , so that the oil storage chamber 15 can be divided into two non-communicating chambers during the movement.
  • the pushing member 151 can be disposed close to the water pumping channel 112 .
  • water can be injected into the water pumping channel 112 to generate power to drive the pushing member 151 to reciprocate.
  • FIG. 7 and FIG. 8 show the fourth embodiment of the tooth irrigator of the present invention, which is different from the third embodiment in that the oil storage tank 15 can be arranged on the outside of the pump body 11, and the oil filling pipe 13 can be directed toward the The outer side of the pump body 11 extends out, and the oil storage tank 15 communicates with the accommodating cavity 111 .
  • the opening of the oil storage tank 15 may be disposed on the communication channel 152 connected to the water pumping channel 112 , and the communication channel 152 can allow part of the water in the water pumping channel 112 to enter above the pushing member 151 of the oil storage chamber 15 in the chamber.
  • the pushing member 151 may include a pushing portion 1511 and a matching portion 1512 , the pushing portion 1511 may be located in the oil storage tank 15 , and the cross-sectional size may be adapted to the cross-sectional size of the fuel storage tank 15 , and the matching portion 1512 may be provided One end of the push portion 1511 can be inserted into the communication channel 152.
  • water pressure can be generated to drive the matching portion 1512 to press down, thereby driving the push portion 1511 to push the oil storage tank. Lubricant in 15 pushes out.
  • the accommodating cavity 111 may not be limited to being disposed on the inner side wall of the pump body 11 , and the accommodating cavity 111 may be It is arranged on the outer side wall of the waterproof sealing sleeve 122 of the piston assembly 12 .
  • the accommodating cavity 111 may include a first cavity 1111 and a second cavity 1112.
  • the first cavity 1111 and the second cavity 1112 may be arranged in sequence along the movement direction of the piston assembly 12.
  • the first cavity 1111 And the end face of the second cavity 1112 is in sealing contact with the waterproof sealing sleeve 122 of the piston assembly 12 .
  • the accommodating cavity 111 can be divided into a first cavity 1111 and a second cavity by disposing a protrusion 1113 protruding toward the waterproof sealing sleeve 122 in the accommodating cavity 111 .
  • the protrusion 1113 can be disposed on the inner side wall of the pump body 11 and can move relative to the piston assembly 12 , thereby changing the volumes of the first cavity 1111 and the second cavity 1112 .
  • the protrusion 1113 can be disposed on the waterproof sealing sleeve 122, and can be disposed protruding toward the inner side wall of the pump body 11, and can be driven by the piston assembly 12 to reciprocate.
  • first cavity 1111 and the second cavity 1112 can be changed.
  • first cavity 1111 and the second cavity 1112 may be disposed on two opposite sides of the piston assembly 12.
  • first cavity 1111 and The second cavity 1112 may also be located on the outer circumference of the piston assembly 12, and may be an annular cavity provided along the circumferential direction of the piston assembly 12.
  • the oil storage tank 15 may be disposed on the outer side of the pump body 11 , and may be located on one side or two opposite sides of the pump body 11 . In other embodiments, the oil storage tank 15 may be disposed along the circumferential direction of the pump body 11 , and may be an annular tank body.
  • the oil injection pipe 13 may include two oil injection pipes 13 , and the two oil injection pipes 13 may be disposed corresponding to the two first cavities 1111 and the second cavity 112 .
  • the oil injection channel 131 may include a first oil injection channel 131 a and a second oil injection channel 131 b , and the first oil injection channel 131 a and the second oil injection channel 131 b may be provided in a one-to-one correspondence with the two oil injection pipes 13 .
  • the first oil filling passage 131 a can communicate with the oil storage tank 15 and the first cavity 1111
  • the second oil filling passage 131 b can communicate with the oil storage cavity 15 and the second cavity 1112 .
  • the volumes of the first cavity 1111 and the second cavity 1112 will change, so that the piston assembly 12 can discharge or extract the lubricating oil in the oil storage tank 15 , so that the piston assembly 12 can The lubricating oil is recycled to keep the lubricating oil in the accommodating cavity 111 all the time.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Mechanical Engineering (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Reciprocating Pumps (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne une pompe d'aspiration d'eau et un irrigateur buccal équipé de celle-ci. La pompe d'aspiration d'eau comprend un corps de pompe (11) et un ensemble piston (12) disposé dans le corps de pompe (11) en va-et-vient, le corps de pompe (11) et/ou l'ensemble piston (12) étant pourvus d'une cavité de réception (111) destinée à recevoir de l'huile lubrifiante pour lubrifier l'ensemble piston (12) lorsque l'ensemble piston (12) effectue un mouvement de va-et-vient. La pompe d'aspiration d'eau comprend en outre un canal d'injection d'huile (131), qui est en communication avec la cavité de réception (111), de façon à injecter l'huile lubrifiante dans la cavité de réception (111). La pompe d'aspiration d'eau peut injecter l'huile lubrifiante dans la cavité de réception (111) sur le corps de pompe (11) et/ou l'ensemble piston (12) dans un temps donné, en disposant le canal d'injection d'huile (131) sur une paroi latérale du corps de pompe (11), évitant ainsi le phénomène d'épuisement de l'huile de lubrification dans le corps de pompe (11), de telle sorte qu'un piston s'use et que l'irrigateur buccal ne soit pas pratique à utiliser ou soit mis au rebut.
PCT/CN2021/090068 2021-01-11 2021-04-26 Irrigateur buccal et pompe d'aspiration d'eau WO2022147929A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110033139.6 2021-01-11
CN202110033139.6A CN112746952A (zh) 2021-01-11 2021-01-11 冲牙器及用于冲牙器的抽水泵

Publications (1)

Publication Number Publication Date
WO2022147929A1 true WO2022147929A1 (fr) 2022-07-14

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PCT/CN2021/090068 WO2022147929A1 (fr) 2021-01-11 2021-04-26 Irrigateur buccal et pompe d'aspiration d'eau

Country Status (2)

Country Link
CN (1) CN112746952A (fr)
WO (1) WO2022147929A1 (fr)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2006870B (en) * 1977-10-26 1982-03-10 Woma Maasberg Co Gmbh W Piston pump particularly high pressure piston pump of horizontal construction
JPH02149774A (ja) * 1988-12-01 1990-06-08 Eikou Sangyo Kk 流体圧送装置
CN2412545Y (zh) * 2000-03-21 2001-01-03 许嘉显 冲牙机传动机构的润滑结构
US6302401B1 (en) * 1998-07-07 2001-10-16 The Palmour Group Stuffing box seal assembly
CN2485452Y (zh) * 2001-04-18 2002-04-10 三一重工股份有限公司 混凝土泵输送缸润滑装置
CN201874808U (zh) * 2010-11-01 2011-06-22 长沙中联重工科技发展股份有限公司 润滑油口结构、混凝土缸组件及混凝土泵送机械
CN102287367A (zh) * 2011-07-30 2011-12-21 郑国璋 一种超高压柱塞泵柱塞的密封润滑结构
CN202370821U (zh) * 2011-11-18 2012-08-08 北汽福田汽车股份有限公司 管道输送机构
CN203570564U (zh) * 2013-11-15 2014-04-30 宁波钱湖石油设备有限公司 一种带有润滑装置的柱塞式密封函组件
CN203604193U (zh) * 2013-10-31 2014-05-21 三一汽车制造有限公司 泵送机械
CN204152741U (zh) * 2014-09-26 2015-02-11 浙江众博矿业机械有限公司 矿用水泵
WO2019048750A1 (fr) * 2017-09-05 2019-03-14 Vianney Rabhi Piston hydraulique a soupape de refroidissement et lubrification
CN110192925A (zh) * 2019-05-23 2019-09-03 爱几度（深圳）科技有限公司 一种洗牙器及用于洗牙器的抽水泵
CN212250364U (zh) * 2020-04-24 2020-12-29 孚力彤泵业(无锡)有限公司 一种高效节能泵

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2006870B (en) * 1977-10-26 1982-03-10 Woma Maasberg Co Gmbh W Piston pump particularly high pressure piston pump of horizontal construction
JPH02149774A (ja) * 1988-12-01 1990-06-08 Eikou Sangyo Kk 流体圧送装置
US6302401B1 (en) * 1998-07-07 2001-10-16 The Palmour Group Stuffing box seal assembly
CN2412545Y (zh) * 2000-03-21 2001-01-03 许嘉显 冲牙机传动机构的润滑结构
CN2485452Y (zh) * 2001-04-18 2002-04-10 三一重工股份有限公司 混凝土泵输送缸润滑装置
CN201874808U (zh) * 2010-11-01 2011-06-22 长沙中联重工科技发展股份有限公司 润滑油口结构、混凝土缸组件及混凝土泵送机械
CN102287367A (zh) * 2011-07-30 2011-12-21 郑国璋 一种超高压柱塞泵柱塞的密封润滑结构
CN202370821U (zh) * 2011-11-18 2012-08-08 北汽福田汽车股份有限公司 管道输送机构
CN203604193U (zh) * 2013-10-31 2014-05-21 三一汽车制造有限公司 泵送机械
CN203570564U (zh) * 2013-11-15 2014-04-30 宁波钱湖石油设备有限公司 一种带有润滑装置的柱塞式密封函组件
CN204152741U (zh) * 2014-09-26 2015-02-11 浙江众博矿业机械有限公司 矿用水泵
WO2019048750A1 (fr) * 2017-09-05 2019-03-14 Vianney Rabhi Piston hydraulique a soupape de refroidissement et lubrification
CN110192925A (zh) * 2019-05-23 2019-09-03 爱几度（深圳）科技有限公司 一种洗牙器及用于洗牙器的抽水泵
CN212250364U (zh) * 2020-04-24 2020-12-29 孚力彤泵业(无锡)有限公司 一种高效节能泵

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