CN110107495B - Handheld portable cleaning machine with two liquid-cooled pumps - Google Patents
Handheld portable cleaning machine with two liquid-cooled pumps Download PDFInfo
- Publication number
- CN110107495B CN110107495B CN201910353083.5A CN201910353083A CN110107495B CN 110107495 B CN110107495 B CN 110107495B CN 201910353083 A CN201910353083 A CN 201910353083A CN 110107495 B CN110107495 B CN 110107495B
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- China
- Prior art keywords
- pump
- motor
- cleaning machine
- shell
- water inlet
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
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- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
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- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- 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
- F04B53/08—Cooling; Heating; Preventing freezing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a hand-held portable cleaning machine with double liquid-cooled pumps, which comprises: a pump driven by the motor, the pump having a pump water inlet and a high pressure water outlet; the shell hermetically wraps the pump and the motor; the pump includes: at least one plunger; the swash plate is driven by the motor to drive the plunger to move linearly; a pump housing having a seal cavity containing the plunger, the swash plate and the lubricating coolant; the pump shell is provided with at least one cooling channel, a water inlet communicated with one end of the cooling channel and a water outlet communicated with the other end of the cooling channel, the water inlet is connected with an external water source, and the water outlet is connected with a water inlet of the pump. The invention has the following beneficial effects: increase outside flowing water cooling when the inside coolant of pump is refrigerated, realize the dual liquid cooling of inside and outside combination, circulation and non-circulation combination, make pump body cooling problem obtain thoroughly solving, the life-span of pump improves greatly, has still avoided in the use in addition to cause the condition of scald to the human body, uses safelyr.
Description
Technical Field
The invention belongs to the technical field of handheld cleaning machines, and particularly relates to a handheld portable cleaning machine with double liquid-cooled pumps.
Background
The high-pressure cleaning machine is a device which uses water or mixed liquid added with a cleaning agent as a cleaning medium and utilizes high-pressure water flow to clean the surface of an object, the high-pressure cleaning machine can be used for cleaning automobiles, courtyards, the ground, railings, doors and windows and the like, the use is more efficient and convenient, the high-pressure cleaning machine mainly comprises a spray gun and a host, the host comprises a motor, a pump, a battery or an external power line, the spray gun and the host are connected through a water inlet pipe, the spray gun is used for forming water flows with different shapes according to actual needs, the host is used for converting the water into the high-pressure water flow from municipal tap water or a water bucket and conveying the high-pressure water flow to the spray gun, the host is usually fixedly placed or movably placed on the ground, the host has larger volume and heavier weight, the use.
Hand-held type cleaning machine or hand-held type high pressure cleaner can grip the machine with the hand and wash the operation through the outside water source of water pipe lug connection, removes the convenience and effectively solves. Further research and practical use find that because the motor and the pump are all wrapped in a smaller casing, the casing is close to a human body, in the using process, the high-speed operation of mechanical parts directly causes the motor and the pump to generate a large amount of heat, the temperature of the motor and the pump body is rapidly increased, the overhigh temperature rise of the parts is often a main factor causing the failure of mechanical moving parts and the like, and the high temperature can easily scald the human body, so that the problem that how to reduce the temperature of the motor and the pump becomes necessary to be solved is that the motor is always forcibly cooled by the fan blades, the fan blades bring the heat generated by the motor to the space outside the casing, the best solution for cooling the pump in the prior art is to add cooling liquid in a plunger cavity of the pump, so that the temperature of the pump is controlled to a certain extent, but because the cooling liquid exists in a sealed space and does not flow circularly, the temperature of the pump is difficult to control effectively.
It follows that in addition to the need to cool the motor, the pump should also be cooled more efficiently to improve the experience during use and the life of the mechanical components.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a handheld portable cleaning machine with double liquid-cooling pumps, which can further improve the cooling capacity of the pumps, thereby prolonging the service life of components and improving the experience of users.
In order to solve the problems of the prior art, the invention discloses a handheld portable cleaning machine with double liquid-cooled pumps, which comprises:
a pump driven by the motor, the pump having a pump water inlet and a high pressure water outlet;
a housing containing the pump and the motor;
the pump includes:
at least one plunger;
the swash plate is driven by the motor to drive the plunger to move linearly;
a pump housing having a seal cavity containing the plunger, the swash plate and the lubricating coolant;
the pump shell is provided with at least one cooling channel, a water inlet communicated with one end of the cooling channel and a water outlet communicated with the other end of the cooling channel, the water inlet is connected with an external water source, and the water outlet is connected with a water inlet of the pump.
Furthermore, an end cover is arranged at one end, close to the motor, of the pump shell and is connected with the motor.
Further, the pump casing comprises a pump head and a pump casing which are connected in a front-back mode to form a sealed cavity, and the cooling channel, the water inlet and the water outlet are all arranged on the pump casing.
Furthermore, an end cover is arranged at one end, close to the motor, of the pump shell, and the end cover is connected with the motor.
Furthermore, a speed reducing mechanism is arranged between the pump and the motor, and the speed reducing mechanism is arranged in the end cover.
Further, the speed reduction mechanism is a planetary gear speed reduction mechanism.
Furthermore, the water inlet is positioned at the position which is far away from the near end of the motor, and the water outlet is positioned at the position which is far away from the far end of the motor;
when the cooling channel extends along the direction parallel to the axis of the pump shell, the outer surface of the cooling channel is provided with a plurality of heat conducting ribs I extending to the outer surface of the pump shell; when the cooling channel extends along the circumferential direction of the pump housing, the outer surface of the cooling channel is provided with a plurality of heat conducting ribs II extending to the outer surface of the pump housing.
Furthermore, the shell is provided with an accommodating part and a handheld part which are integrally connected, the pump and the motor are arranged in the accommodating part, the handheld part extends obliquely along the direction deviating from the accommodating part, and the handheld part is provided with a power switch.
Furthermore, the handheld portable cleaning machine also comprises a battery pack, and the rated voltage of the battery pack is 18-60V; the battery package is located in handheld portion or detachable locate the waterproof storehouse of handheld portion tip in, waterproof storehouse is equipped with waterproof storehouse lid.
Furthermore, the handheld portable cleaning machine also comprises a battery pack, and the rated voltage of the battery pack is 18-60V; the battery pack is connected with the end part of the handheld part in a sealing and plugging manner.
Further, the motor is a rare earth permanent magnet brushless motor.
Further, the shell is a completely sealed shell, the waterproof grade of the shell reaches IPX7, the handheld portable cleaning machine is a handheld portable high-pressure cleaning machine, and the maximum working pressure of the pump is not lower than 2.5 Mpa.
Further, the weight of the hand-held portable washing machine does not exceed 4.2 kg.
The invention has the following beneficial effects: increase outside flowing water cooling when the inside coolant of pump is refrigerated, realize the dual liquid cooling of inside and outside combination, circulation and non-circulation combination, make pump body cooling problem obtain thoroughly solving, the life-span of pump improves greatly, has still avoided in the use in addition to cause the condition of scald to the human body, uses safelyr.
Drawings
FIG. 1 is a front view of the structure of a preferred embodiment of the present invention;
FIG. 2 is a front view of the motor pump unit of the embodiment of FIG. 1;
FIG. 3 is a perspective view of the motor pump unit of the embodiment of FIG. 1;
FIG. 4 is a perspective view of the construction of the pump casing of the embodiment of FIG. 1;
fig. 5 is a perspective view of an alternative pump housing to the embodiment of fig. 1.
Reference numerals:
1, high-pressure water outlet; 2, a pump head; 3 pump casing; 4, end cover; 5, a motor; 6, a water inlet; 7 a cooling channel; 8, a water outlet; 9 a joint; 10 connecting pipes; 11 a pump water inlet; 12 sealing the cavity; 13 a plunger; 14 a swash plate; 15 heat conducting ribs I; 16 a hand-held portion; 17 a battery pack; 18 a power switch; 19 a water inlet pipe; 20 a housing; 21, a spray gun; 22 a hand-held portable cleaning machine; 23 a pump; 24 a speed reducing mechanism; 25 waterproof bin covers; 26 a pump housing; 27 a housing part; 28 waterproof bin; 29 heat conducting ribs II; the direction indicated by the arrow in the figure is the water flow direction.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1-5, a hand-held portable washer 22 with dual liquid-cooled pumps includes: the spray gun comprises a shell 20, a motor pump unit and a spray gun 21, wherein the motor pump unit comprises a motor 5 and a pump 23 driven by the motor 5, and the pump 23 is provided with a pump water inlet 11 and a high-pressure water outlet 1; the high-pressure water outlet 1 is connected with a spray gun 21. The housing 20 houses the pump 23 and the motor 5.
The pump 23 includes at least one plunger 13, a swash plate 14, and a pump housing 26. The plunger 1 moves linearly in the plunger cavity, one end of the plunger 1 in the sealed cavity 12 is in sliding contact with the disc surface of the swash plate 14, the swash plate 14 is driven by the motor 5 to drive the plunger 13 to move linearly, and then the plunger is reset under the action of the spring so as to realize reciprocating motion. The pump housing 26 has a seal chamber 12, and the seal chamber 12 accommodates the plunger 13, the swash plate 14, and the lubricating coolant.
The pump housing 26 is provided with at least one cooling channel 7, a water inlet 6 communicating with one end of the cooling channel 7, and a water outlet 8 communicating with the other end of the cooling channel 7, the water inlet 6 is connected to an external water source through a water inlet pipe 19, and the water outlet 8 is connected to a pump water inlet 11 through a connecting pipe 10. The water flow enters the cooling channel 7 through the water inlet pipe 19, and the heat generated by the operation of the internal mechanical components of the pump 23 during the operation process is conducted to the pump shell 26 through the lubricating coolant, then conducted to the cooling channel 7 and finally taken away by the cooling water flowing in the cooling channel, so that the heat dissipation with higher efficiency is realized.
Typically, the end of the pump housing 26 close to the motor 5 is provided with an end cover 4, the end cover 4 is connected with the motor 5, and the fixed connection between the pump 23 and the motor 5 is realized through the end cover 4. Because the connecting piece is a bolt or a screw, the two can be conveniently separated.
As an alternative to the above connection, the pump housing 26 includes a pump head 2 and a pump housing 3 connected in front and back to form a sealed chamber 12, and the cooling channel 7, the water inlet 6 and the water outlet 8 are all provided on the pump housing 3. One end of the pump shell 3 close to the motor 5 is provided with an end cover 4, and the end cover 4 is connected with the motor 5. This not only facilitates the connection of the pump 23 to the motor 5, but also facilitates the installation of the components within the pump 23, i.e., the various valves and plungers 13 are installed in the pump head 2 and the swash plate 14 is installed in the pump housing 3.
In order to increase the operating pressure of the pump 23, the torque output by the motor 5 can therefore be increased. Specifically, a speed reducing mechanism 24 is arranged between the pump 23 and the motor 5, the end cover 4 is of a cylindrical structure and therefore has a containing cavity, and the speed reducing mechanism 24 is arranged in the containing cavity of the end cover 4. The reduction mechanism 24 is a planetary gear reduction mechanism.
The water inlet 6 is located at a proximal position from the motor 5 and the water outlet 8 is located at a distal position from the motor 5. As shown in fig. 4, when the cooling channel 7 extends in a direction parallel to the axis of the pump housing 26, in order to better conduct the heat of the pump housing 3 to the cooling channel 7, the outer surface of the cooling channel 7 is provided with a plurality of heat conducting ribs I15 extending circumferentially to the outer surface of the pump housing 26. When the cooling channel 7 extends in the circumferential direction of the pump housing 26, the outer surface of the cooling channel 7 is provided with a plurality of heat conducting ribs II29 extending axially to the outer surface of the pump housing 26. The pump housing 3 may also have cooling channels 7 extending in both directions, and as shown in fig. 5, the cooling channel 7 extending in the circumferential direction is provided at an end of the pump housing 3 close to the motor 5, and is substantially an annular groove provided at an end face of the end, and is sealed by the head cover 4 when the end is connected to the head cover 4 to form the cooling channel 7 for the cooling water to flow therein. The axially extending cooling channel 7 may communicate the circumferentially extending cooling channel 7 with the water outlet 8.
The housing 20 has a receiving portion 27 and a hand-held portion 16 integrally connected, the pump 23 and the motor 5 are disposed in the receiving portion 27, the hand-held portion 16 extends obliquely in a direction away from the receiving portion 27, and the hand-held portion 16 is provided with a power switch 18. The power switch 18 is connected in the power supply circuit to realize the start-stop control of the whole machine.
In order to improve the application range of the cleaning machine and reduce external cables, the cleaning machine can adopt a self-powered mode, specifically, the handheld portable cleaning machine 22 further comprises a battery pack 17, and the rated voltage of the battery pack 17 is 18-60V; the battery pack 17 is arranged in the handheld part 16 or detachably arranged in a waterproof bin 28 at the end part of the handheld part 16, and the waterproof bin 28 is provided with a waterproof bin cover 25. The waterproof bin cover 25 can be opened and closed by the waterproof bin 28 in a sliding mode, and can also be opened and closed by the waterproof bin 28 in a pivoting mode, so that the battery pack 17 can be taken and placed conveniently. As an alternative, the battery pack 17 is connected with the end of the handheld portion 16 in a sealed plug-in manner, specifically, the handheld portion 16 is provided with a contact, a contact is also arranged at a position corresponding to the battery pack 17, and after the battery pack 17 is inserted in place, the contacts of the battery pack and the handheld portion are connected to form a complete power supply loop, and meanwhile, the waterproof requirement is met.
The motor 5 is a rare earth permanent magnet brushless motor, and the brushless motor has stronger power and can improve the working pressure of the pump 23.
When the motor 5 is a non-air-cooling motor, no air inlet or air outlet is needed on the shell 20, the shell 20 can be made into a complete seal, the waterproof grade of the shell reaches the requirement of the handheld high-pressure cleaning machine IPX7, the maximum working pressure of the pump 23 is not lower than 2.5Mpa, and therefore stronger cleaning capability is achieved, and silence is achieved.
To reduce the fatigue of hand-held use, the weight of the hand-held portable high pressure washer 22 does not exceed 4.2kg, and preferably, the weight of the hand-held portable high pressure washer 22 does not exceed 3 kg.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A hand-held portable washer (22) with dual liquid-cooled pumps, comprising:
a pump (23) driven by a motor (5), the pump (23) having a pump water inlet (11) and a high pressure water outlet (1);
a housing (20), the housing (20) housing the pump (23) and the motor (5);
the pump (23) comprises:
at least one plunger (13);
the swash plate (14) is driven by the motor (5) to drive the plunger (13) to move linearly;
a pump housing (26), said pump housing (26) having a seal cavity (12), said seal cavity (12) housing said plunger (13), said swash plate (14) and a lubricating coolant; it is characterized in that the preparation method is characterized in that,
the pump shell (26) is provided with at least one cooling channel (7), a water inlet (6) communicated with one end of the cooling channel (7) and a water outlet (8) communicated with the other end of the cooling channel (7) along the outer surface of the shell (20), the water inlet (6) is connected with an external water source, the water outlet (8) is connected with the pump water inlet (11), the water inlet (6) is positioned at a position which is far away from the proximal end of the motor (5), the water outlet (8) is positioned at a position which is far away from the distal end of the motor (5), the cooling channel (7) extends along the axial direction parallel to the pump shell (26), and the outer surface of the cooling channel (7) is provided with a plurality of heat conducting ribs I (15) extending to the outer surface of the pump shell (26;
the pump casing (26) is including connecting in front and back in order to form pump head (2) and pump casing (3) of seal chamber (12), cooling channel (7), water inlet (6) and delivery port (8) all locate on the pump casing (3).
2. A hand-held portable cleaning machine (22) with dual liquid-cooled pumps according to claim 1, characterized in that: an end cover (4) is arranged at one end, close to the motor (5), of the pump shell (3), and the end cover (4) is connected with the motor (5).
3. A hand-held portable cleaning machine (22) with dual liquid-cooled pumps according to claim 2, characterized in that: a speed reducing mechanism (24) is arranged between the pump (23) and the motor (5), and the speed reducing mechanism (24) is arranged in the end cover (4).
4. A hand-held portable cleaning machine (22) with dual liquid-cooled pumps according to claim 3, characterized in that: the speed reducing mechanism (24) is a planetary gear speed reducing mechanism.
5. A hand-held portable cleaning machine (22) with dual liquid-cooled pumps according to claim 1, characterized in that: the shell (20) is provided with an integrally connected accommodating part (27) and a handheld part (16), the pump (23) and the motor (5) are arranged in the accommodating part (27), the handheld part (16) extends along the direction deviating from the accommodating part (27) in an inclined mode, and a power switch (18) is arranged on the handheld part (16).
6. Hand-held portable washing machine (22) with double liquid-cooled pump according to claim 5, characterized in that: the handheld portable cleaning machine (22) further comprises a battery pack (17), and the rated voltage of the battery pack (17) is 18-60V; the battery pack (17) is arranged in the handheld part (16) or detachably arranged in a waterproof bin (28) at the end part of the handheld part (16), and the waterproof bin (28) is provided with a waterproof bin cover (25).
7. A hand-held portable cleaning machine (22) with dual liquid-cooled pumps according to claim 1, characterized in that: the motor (5) is a rare earth permanent magnet brushless motor.
8. A hand-held portable cleaning machine (22) with dual liquid-cooled pumps according to claim 1, characterized in that: the shell (20) is a completely sealed shell, the waterproof grade of the shell reaches IPX7, the handheld portable cleaning machine (22) is a handheld portable high-pressure cleaning machine, and the maximum working pressure of the pump (23) is not lower than 2.5 Mpa.
9. A hand-held portable cleaning machine (22) with dual liquid-cooled pumps according to claim 1, characterized in that: the weight of the handheld portable cleaning machine is not more than 4.2 kg.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353083.5A CN110107495B (en) | 2019-04-29 | 2019-04-29 | Handheld portable cleaning machine with two liquid-cooled pumps |
| PCT/CN2019/099765 WO2020220505A1 (en) | 2019-04-29 | 2019-08-08 | Handheld portable cleaning machine having dual liquid-cooled pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353083.5A CN110107495B (en) | 2019-04-29 | 2019-04-29 | Handheld portable cleaning machine with two liquid-cooled pumps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110107495A CN110107495A (en) | 2019-08-09 |
| CN110107495B true CN110107495B (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910353083.5A Active CN110107495B (en) | 2019-04-29 | 2019-04-29 | Handheld portable cleaning machine with two liquid-cooled pumps |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110107495B (en) |
| WO (1) | WO2020220505A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212130698U (en) * | 2019-12-06 | 2020-12-11 | 苏州宝时得电动工具有限公司 | Host computer subassembly of cleaning machine and have its cleaning machine |
| CN111336101B (en) * | 2020-03-19 | 2024-09-06 | 苏州贝米科技有限公司 | Fluid pressurizing device, application thereof and liquid pressurizing system |
| DE102021103306A1 (en) | 2021-02-12 | 2022-08-18 | Kolektor Group D.O.O. | Hand-held hydraulic fluid device |
| CN113790138B (en) * | 2021-07-30 | 2023-06-06 | 温州鸿向环保科技有限公司 | Cleaning machine |
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| US5785506A (en) * | 1994-12-21 | 1998-07-28 | Ahresty Corporation | Liquid feeding pump |
| CN2860634Y (en) * | 2006-03-15 | 2007-01-24 | 钱江集团浙江亿江机电有限公司 | High pressure cleaning machine |
| CN107401491A (en) * | 2017-09-24 | 2017-11-28 | 英立（江苏）机电有限公司 | A kind of oil drilling slush pump |
| CN207166263U (en) * | 2017-07-07 | 2018-03-30 | 南京苏美达动力产品有限公司 | One kind is used for jetting machine water cooled machine pump unit |
| CN208743162U (en) * | 2018-07-13 | 2019-04-16 | 苏州宝时得电动工具有限公司 | Hand-held pressure washer |
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|---|---|---|---|---|
| US20090045271A1 (en) * | 2005-11-16 | 2009-02-19 | Faip North America, Inc. | Handheld electric pressure washer |
| CN205478149U (en) * | 2016-03-22 | 2016-08-17 | 温岭市廊泵美联制动装置有限公司 | Dual water -cooled cleaning machine |
| WO2018184659A1 (en) * | 2017-04-03 | 2018-10-11 | Alfred Kärcher SE & Co. KG | Handheld pressure cleaner |
| CN108787554B (en) * | 2017-05-04 | 2024-01-05 | 苏州宝时得电动工具有限公司 | Hand-held high-pressure cleaning machine |
| CN208128044U (en) * | 2017-12-15 | 2018-11-20 | 浙江新昌别克跃电动工具有限公司 | A kind of jetting machine using water-cooled machine |
| CN110052342B (en) * | 2019-04-29 | 2020-09-18 | 江苏苏美达五金工具有限公司 | Waterproof charging type amphibious high-pressure cleaning machine |
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2019
- 2019-04-29 CN CN201910353083.5A patent/CN110107495B/en active Active
- 2019-08-08 WO PCT/CN2019/099765 patent/WO2020220505A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5785506A (en) * | 1994-12-21 | 1998-07-28 | Ahresty Corporation | Liquid feeding pump |
| CN2860634Y (en) * | 2006-03-15 | 2007-01-24 | 钱江集团浙江亿江机电有限公司 | High pressure cleaning machine |
| CN207166263U (en) * | 2017-07-07 | 2018-03-30 | 南京苏美达动力产品有限公司 | One kind is used for jetting machine water cooled machine pump unit |
| CN107401491A (en) * | 2017-09-24 | 2017-11-28 | 英立（江苏）机电有限公司 | A kind of oil drilling slush pump |
| CN208743162U (en) * | 2018-07-13 | 2019-04-16 | 苏州宝时得电动工具有限公司 | Hand-held pressure washer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020220505A1 (en) | 2020-11-05 |
| CN110107495A (en) | 2019-08-09 |
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