CN111810375A - High viscosity oil injection pump - Google Patents
High viscosity oil injection pump Download PDFInfo
- Publication number
- CN111810375A CN111810375A CN202010678087.3A CN202010678087A CN111810375A CN 111810375 A CN111810375 A CN 111810375A CN 202010678087 A CN202010678087 A CN 202010678087A CN 111810375 A CN111810375 A CN 111810375A
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- Prior art keywords
- oil
- cylinder
- viscosity
- piston
- oil cylinder
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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- 238000002347 injection Methods 0.000 title claims abstract description 52
- 239000007924 injection Substances 0.000 title claims abstract description 52
- 238000007789 sealing Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 168
- 229920002545 silicone oil Polymers 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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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
- F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
- F04B3/003—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage with two or more pistons reciprocating one within another, e.g. one piston forning cylinder of the other
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- 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
-
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to the technical field of dampers, in particular to a high-viscosity oil injection pump which comprises a first oil cylinder, wherein a first oil injection cavity is arranged in the first oil cylinder, the first oil cylinder is connected with a second oil cylinder, a second oil injection cavity is arranged in the second oil cylinder, a first piston is arranged in the first oil cylinder, the first oil injection cavity is divided into a first left cavity and a first right cavity by the first piston, a second piston is arranged in the second oil cylinder, and the second oil injection cavity is divided into a second left cavity and a second right cavity by the second piston; the first piston and the second piston are connected with each other through a first piston rod; the second oil cylinder is provided with a high-viscosity oil inlet and a high-viscosity oil outlet, and the high-viscosity oil inlet and the high-viscosity oil outlet are communicated with the second left chamber and the outside; the second oil cylinder is provided with a balance air hole which is communicated with the second right chamber and the outside. The oil injection process is stable and safe, and the structural stability and the durability of the equipment cylinder body are high.
Description
Technical Field
The invention relates to the technical field of dampers, in particular to a high-viscosity oil injection pump.
Background
The viscous damper is a damper related to the movement speed of a piston, is manufactured according to the principle that fluid movement, particularly throttling resistance is generated when fluid passes through a throttling hole, and is widely applied to the fields of high-rise buildings, bridges, building structure shock absorption transformation, industrial pipeline equipment shock resistance, military industry and the like.
For the oiling of viscous dampers employing high viscosity oil, there is currently no very effective solution. The conventional method is that the silicone oil is directly poured into an oil drum and then stands for a period of time, air holes in the high-viscosity silicone oil are scooped out after floating on the surface, then the oil cylinder is closed, air is slowly discharged by using a pneumatic pump, and pressurization is carried out. The disadvantage of this approach is that the efficiency is very low, the operating time is not only long, the pressures that can be achieved are low, but also during the oil filling process the equipment is in a high load operating state for a long time, and the structural losses to the pump head are very rapid.
Disclosure of Invention
The invention aims to provide a high-viscosity oil injection pump, and solves the technical problems.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
a high-viscosity oil injection pump comprises a first oil cylinder, wherein a first oil injection cavity is arranged in the first oil cylinder, the first oil cylinder is connected with a second oil cylinder, a second oil injection cavity is arranged in the second oil cylinder, a first piston is arranged in the first oil cylinder, the first oil injection cavity is divided into a first left cavity and a first right cavity by the first piston, a second piston is arranged in the second oil cylinder, and the second oil injection cavity is divided into a second left cavity and a second right cavity by the second piston;
the first piston and the second piston are connected with each other through a first piston rod and then act synchronously;
the second oil cylinder is provided with a high-viscosity oil inlet and a high-viscosity oil outlet, the high-viscosity oil inlet and the high-viscosity oil outlet are communicated with the second left chamber and the outside, and the second oil injection cavity is communicated with the outside through the high-viscosity oil inlet and the high-viscosity oil outlet;
the second oil cylinder is provided with a balance air hole which is communicated with the second right cavity and the outside and used for balancing the air pressure of the cavity of the second oil cylinder.
According to the invention, the second oil cylinder is arranged on one side of the first oil cylinder serving as a conventional oil cylinder and serves as an oil injection cylinder body connected with the viscous damper, so that high-viscosity silicone oil is injected into the damper, the efficiency is much higher than that of a traditional mode, the load of the equipment cylinder body is smaller than that of a traditional structure during working, the loss of a pump head is lower, and the service life of the equipment can be prolonged.
The cross-sectional area of the first oil injection cavity is larger than that of the second oil injection cavity.
According to the invention, the cross-sectional area of the first oil injection cavity is set to be larger than that of the second oil injection cavity, so that the working pressure of the first oil cylinder is lower, the durability is higher, and the second oil injection cavity is ensured to have enough pressure to pump high-viscosity oil into the damper.
Optionally, a first sealing plate is arranged at an opening on the right side of the first oil cylinder, a first interface of a conventional oil pipe is arranged on the first sealing plate, and the first interface of the conventional oil pipe is communicated with the first right cavity and the outside;
and a second interface of a conventional oil pipe is arranged on the first oil cylinder and is communicated with the first left cavity and the outside.
According to the invention, the two conventional oil filling interfaces are arranged on the first oil cylinder so as to be externally connected with the external oil pump, and the operation of the second oil cylinder is realized after the external oil pump drives the first piston to act, so that the oil filling operation of high-viscosity oil to the damper is realized.
Optionally, the first piston rod is connected to a second piston rod, and the second piston rod penetrates through the first sealing plate on the right opening of the first oil cylinder.
According to the invention, the second piston rod is arranged, so that the first oil cylinder is connected with the second oil cylinder on one side, and the third oil cylinder is arranged on the other side (namely the side of the second piston rod extending out of the first sealing plate), so that the step-by-step driving effect of the first oil cylinder through the third oil cylinder and then the step-by-step boosting effect of the second oil cylinder are realized.
It should be noted that the third cylinder has a structure similar to that of the first cylinder, and includes a cylinder body (including an oil inlet/outlet hole or a port on the cylinder wall) and a built-in piston, and the piston is connected to the second piston rod, so that the first cylinder is driven to work when the third cylinder works, and the viscous damper is filled with oil after the second cylinder is driven to work.
Preferably, the first sealing plate is provided with at least two layers of sealing rings.
Optionally, a second sealing plate is arranged at an opening in the left side of the second oil cylinder, and the second sealing plate is provided with the high-viscosity oil inlet and the high-viscosity oil outlet.
Has the advantages that: by adopting the technical scheme, the oil injection process is stable and safe, and the structural stability and the durability of the equipment cylinder body are high.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an external view of FIG. 1;
fig. 3 is another schematic structural diagram of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific drawings. It is noted that the terms "first," "second," "third," "fourth," and the like (if any) in the description and in the claims of the invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises" or "comprising," and any variations thereof, are intended to cover non-exclusive inclusions, such that a product or apparatus that comprises a list of elements or units is not necessarily limited to those elements or units expressly listed, but may include other elements or units not expressly listed or inherent to such product or apparatus.
Referring to fig. 1, the high viscosity oil injection pump comprises a first oil cylinder 101, wherein a first oil injection cavity is arranged in the first oil cylinder 101, the first oil cylinder 101 is connected with a second oil cylinder 102 through a left opening, a second oil injection cavity is arranged in the second oil cylinder 102, a first piston 201 is arranged in the first oil cylinder 101, the first piston 201 divides the first oil injection cavity into a first left cavity A1 and a first right cavity A2, a second piston 202 is arranged in the second oil cylinder 102, and the second piston 202 divides the second oil injection cavity into a second left cavity B1 and a second right cavity B2; the first piston 201 and the second piston 202 are connected with each other through a first piston rod 301 and then synchronously act, and the first piston 201 and the second piston 202 are connected to two ends of the first piston rod 301; the first piston rod 301 is provided with a sealing structure at a position where it passes through the two cylinders.
The second oil cylinder 102 is provided with a high-viscosity oil inlet 501 and a high-viscosity oil outlet 502, the high-viscosity oil inlet 501 and the high-viscosity oil outlet 502 are both communicated with the second left chamber B1 and the outside, and the second oil injection chamber is communicated with the outside through the high-viscosity oil inlet 501 and the high-viscosity oil outlet 502; the second cylinder 102 is provided with a balance air hole 700, and the balance air hole 700 is communicated with the second right chamber B2 and the outside for balancing the air pressure of the chamber of the second cylinder 102.
In some embodiments, the cross-sectional area of the first oil injection cavity is greater than the cross-sectional area of the second oil injection cavity. It should be noted that the cross section of the oil injection cavity refers to a cross-sectional structure that a cavity of the oil injection cavity, which is horizontally transverse in the illustrated structure, is cut by a vertical plane from top to bottom, for example, when any oil injection cavity is a cylindrical cavity structure, the cross section of the oil injection cavity is circular, and the cross-sectional area of the oil injection cavity is the area of the circular shape. The cross-sectional area of the first oil injection cavity is larger than that of the second oil injection cavity, so that the working pressure of the first oil cylinder is lower, the durability is higher, and the pressure in the second oil injection cavity is enough to pump high-viscosity oil into the viscous damper. In the structure shown in fig. 1, the volume of the first oil filling chamber is set larger than the volume of the second oil filling chamber.
In some embodiments, as shown in fig. 1, a first closing plate 401 is disposed at a right opening of the first cylinder 101, a first port 601 of a conventional oil pipe connected to an external oil conveying pipeline is disposed on the first closing plate 401, and the first port 601 of the conventional oil pipe communicates the first right chamber a2 with the outside; the first oil cylinder 101 is further provided with a second interface 602 of a conventional oil pipe, and the second interface 602 of the conventional oil pipe is communicated with the first left chamber A1 and the outside. Two conventional oil pipe interfaces are arranged on the first oil cylinder 101, so that after an external oil pump is connected with an external oil conveying pipeline, the first piston 201 is driven to act through the oil pump, the second piston is pushed by the first piston rod 301, and then the second oil cylinder 102 works, and therefore the oil injection operation of high-viscosity oil on the damper is achieved. Both the first connection 601 of the conventional oil pipe and the second connection 602 of the conventional oil pipe can be used as an oil inlet and an oil outlet, and alternatively, when the first connection 601 of the conventional oil pipe is used as an oil inlet, the second connection 602 of the conventional oil pipe is used as an oil outlet, and vice versa.
It should be noted that conventional oil is typically low viscosity antiwear hydraulic oil.
In some embodiments, as shown in fig. 3, the first piston rod 301 is connected to the second piston rod 302, and the right end of the second piston rod 302 passes through the first sealing plate 401 on the right opening of the first cylinder 101. When the opening is closed by the first sealing plate 401, an opening for allowing the second piston rod 302 to pass through is formed in the first sealing plate 401, and the opening is sealed. With the structure, the synchronous operation of the first oil cylinder 101 and the second oil cylinder 102 can be realized after the second piston rod 302 is connected with an external power mechanism (such as a jack), and additional power is provided for the first oil cylinder which operates after being driven by conventional oil. In some preferred embodiments, at least two layers of sealing rings 900 are disposed on the first cover plate 401, and are disposed in the opening of the first cover plate 401 for penetrating the second piston rod 302, so as to enhance the strength of the sealing structure at the opening.
Based on the embodiment, the invention can be further externally connected with a third oil cylinder to realize the step-by-step supercharging effect, and the step-by-step supercharging effect can be realized after the structure is set as follows: the third oil cylinder is arranged on the right side of the first oil cylinder and connected with the first oil cylinder, the cross-sectional area of a cylinder body of the third oil cylinder is ensured to be larger than that of the first oil cylinder, a corresponding piston is correspondingly arranged in an inner cavity of the cylinder body of the third oil cylinder, the piston arranged in the third oil cylinder is connected with the second piston rod 302, and the cross-sectional area of the piston in the third oil cylinder is larger than that of the first piston 201 in the first oil cylinder, namely, the third oil cylinder can be regarded as a size amplification structure of the first oil cylinder. The first oil cylinder is driven by the third oil cylinder, and then the second oil cylinder is driven to work, so that high-viscosity oil can be filled into the damper.
It should be noted that, according to the structural arrangement of the above embodiment, a step-by-step pressurization structure with more steps can be further realized by arranging the fourth, fifth, …, and nth cylinders on the right side of the third cylinder.
In some embodiments, the second cover plate 402 is disposed at the left opening of the second cylinder 102, and the high-viscosity oil inlet 501 and the high-viscosity oil outlet 502 are disposed on the second cover plate 402. One-way valves are arranged at both the high-viscosity oil inlet 501 and the high-viscosity oil outlet 502, so that when the second piston moves to the right, the high-viscosity oil inlet 501 is opened and the high-viscosity oil outlet 502 is closed, so that high-viscosity silicone oil is pumped into the second left chamber B1 through the high-viscosity oil inlet 501, and when the second piston moves to the left, the high-viscosity oil inlet 501 is closed and the high-viscosity oil outlet 502 is opened, so that the high-viscosity silicone oil is pumped into the viscous damper.
In some embodiments, as shown in fig. 2, a third sealing plate 403 may be disposed at the connection position of the first cylinder and the second cylinder, and a stepped recess for facilitating the edge of the second cylinder 102 to be clamped is formed in an outer wall of the third sealing plate 403, so that when the second cylinder is connected to the first cylinder, the edge of the third sealing plate is inserted between the left opening of the first cylinder and the stepped recess of the third sealing plate 403. In addition, at least two layers of sealing rings are arranged in the opening on the third sealing plate for the first piston rod 301 to pass through.
In the structure shown in fig. 2, the first cover plate is disposed on the first flange plate 4011, and the third cover plate 403 is disposed on the third flange plate 4031, so that when the first cylinder 101 and the second cylinder 102 are coupled, a preload is applied to fasten the first flange plate 4011 and the third flange plate 4031 by coupling the first screw 801 located above and the second screw 802 located below. The first screw 801 and the second screw 802 can be arranged in two, and the two screws are symmetrically arranged in front and back after being grouped.
In addition, a second cover plate 402 may also be provided on the second flange plate 4021 to facilitate connection to the damper.
According to the invention, the second oil cylinder is arranged on one side of the first oil cylinder serving as a conventional oil cylinder and serves as an oil injection cylinder body connected with the viscous damper, so that high-viscosity silicone oil can be injected into the damper, the efficiency is much higher than that of a traditional mode, the load of the equipment cylinder body is smaller than that of a traditional structure during working, the loss of a pump head is lower, the service life of the equipment can be prolonged, during working, the piston can be pushed by low-viscosity lubricating oil in the first oil cylinder, when the piston is pushed forwards, high-viscosity silicone oil is injected into the second oil cylinder, and when the piston is pushed backwards, the high-viscosity silicone oil is output to the damper through the second oil cylinder.
When the invention works, the following two operation modes can be adopted:
1) the jack operation mode: and a jack is connected outside the second piston rod, and the jack pushes the second piston rod to push the first piston and enable the second piston to be linked, so that the second oil cylinder pumps high-viscosity silicone oil.
2) External oil pump operation mode: conventional oil is pumped into and pumped out of the first oil injection cavity through a first interface of a conventional oil pipe on the first oil cylinder and a second interface of the conventional oil pipe, and the second oil injection cavity is driven by the operation of the first oil injection cavity to pump high-viscosity silicone oil into and out of the second oil injection cavity.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A high-viscosity oil injection pump comprises a first oil cylinder, wherein a first oil injection cavity is arranged in the first oil cylinder, and the high-viscosity oil injection pump is characterized in that the first oil cylinder is connected with a second oil cylinder, a second oil injection cavity is arranged in the second oil cylinder, a first piston is arranged in the first oil cylinder, the first oil injection cavity is divided into a first left cavity and a first right cavity by the first piston, a second piston is arranged in the second oil cylinder, and the second oil injection cavity is divided into a second left cavity and a second right cavity by the second piston;
the first piston and the second piston are connected with each other through a first piston rod;
the second oil cylinder is provided with a high-viscosity oil inlet and a high-viscosity oil outlet, and the high-viscosity oil inlet and the high-viscosity oil outlet are communicated with the second left chamber and the outside;
and the second oil cylinder is provided with a balance air hole which is communicated with the second right chamber and the outside.
2. A high viscosity oiling pump according to claim 1 wherein the cross-sectional area of the first oiling chamber is larger than the cross-sectional area of the second oiling chamber.
3. The high-viscosity oil injection pump according to claim 1 or 2, wherein a first sealing plate is arranged at a right opening of the first oil cylinder, a first interface of a conventional oil pipe is arranged on the first sealing plate, and the first interface of the conventional oil pipe is communicated with the first right chamber and the outside;
and a second interface of a conventional oil pipe is arranged on the first oil cylinder and is communicated with the first left cavity and the outside.
4. A high viscosity pump as claimed in claim 3 wherein said first piston rod is connected to a second piston rod, said second piston rod extending through said first closure plate in said right side opening of said first cylinder.
5. A high viscosity pump as claimed in claim 3 wherein said first piston rod is connected to a second piston rod, said second piston rod extending through a right side opening of said second cylinder.
6. A high viscosity pump as claimed in claim 5, wherein the first cover plate is provided with at least two layers of sealing rings.
7. The high viscosity oil pump as claimed in claim 6, wherein a second seal plate is provided at the left opening of the second oil cylinder, and the second seal plate is provided with the high viscosity oil inlet and the high viscosity oil outlet.
8. The high viscosity oil pump according to claim 7, wherein a third sealing plate is provided at a junction of the first cylinder and the second cylinder, and a stepped recess for facilitating the engagement of the edge of the second cylinder is provided on an outer wall of the third sealing plate.
9. The high viscosity pump as claimed in claim 8, wherein the first cover plate is provided on a first flange plate, the third cover plate is provided on a third flange plate, and the first flange plate is connected to the third flange plate by a connecting screw.
10. A high viscosity pump as claimed in claim 9, wherein the second closure plate is provided on a second flange plate, the second flange plate being provided with fastener through holes for attachment of a viscous damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010678087.3A CN111810375A (en) | 2020-07-15 | 2020-07-15 | High viscosity oil injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010678087.3A CN111810375A (en) | 2020-07-15 | 2020-07-15 | High viscosity oil injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111810375A true CN111810375A (en) | 2020-10-23 |
Family
ID=72865108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010678087.3A Pending CN111810375A (en) | 2020-07-15 | 2020-07-15 | High viscosity oil injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111810375A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100761444B1 (en) * | 2006-09-20 | 2007-09-27 | 헤스넷에이엠에스(주) | Oil infuser |
| CN102265034A (en) * | 2008-12-29 | 2011-11-30 | 阿尔法拉瓦尔股份有限公司 | Pump arrangement with two pump units, system, use and method |
| CN202510958U (en) * | 2012-04-11 | 2012-10-31 | 龚婉蓉 | Engine oil supply circulating device |
| CN104390120A (en) * | 2014-09-16 | 2015-03-04 | 宝鸡石油机械有限责任公司 | Hydraulic-driven grease lubricating pump |
| CN108413234A (en) * | 2018-04-27 | 2018-08-17 | 天津开发区天水华源机电设备技术有限公司 | A kind of hydraulic pump lubricating arrangement with solenoid directional control valve |
| CN212376802U (en) * | 2020-07-15 | 2021-01-19 | 玛格巴（上海）桥梁构件有限公司 | High viscosity oil injection pump |
-
2020
- 2020-07-15 CN CN202010678087.3A patent/CN111810375A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100761444B1 (en) * | 2006-09-20 | 2007-09-27 | 헤스넷에이엠에스(주) | Oil infuser |
| CN102265034A (en) * | 2008-12-29 | 2011-11-30 | 阿尔法拉瓦尔股份有限公司 | Pump arrangement with two pump units, system, use and method |
| CN202510958U (en) * | 2012-04-11 | 2012-10-31 | 龚婉蓉 | Engine oil supply circulating device |
| CN104390120A (en) * | 2014-09-16 | 2015-03-04 | 宝鸡石油机械有限责任公司 | Hydraulic-driven grease lubricating pump |
| CN108413234A (en) * | 2018-04-27 | 2018-08-17 | 天津开发区天水华源机电设备技术有限公司 | A kind of hydraulic pump lubricating arrangement with solenoid directional control valve |
| CN212376802U (en) * | 2020-07-15 | 2021-01-19 | 玛格巴（上海）桥梁构件有限公司 | High viscosity oil injection pump |
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