CN115263708A - Metering pump for high-performance micro-conveying - Google Patents
Metering pump for high-performance micro-conveying Download PDFInfo
- Publication number
- CN115263708A CN115263708A CN202210818908.8A CN202210818908A CN115263708A CN 115263708 A CN115263708 A CN 115263708A CN 202210818908 A CN202210818908 A CN 202210818908A CN 115263708 A CN115263708 A CN 115263708A
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- valve
- channel
- metering pump
- communicated
- check valve
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- 230000001502 supplementing effect Effects 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000002609 medium Substances 0.000 description 39
- 239000003921 oil Substances 0.000 description 33
- 239000010720 hydraulic oil Substances 0.000 description 10
- 230000006872 improvement Effects 0.000 description 7
- 239000013589 supplement Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 239000006163 transport media Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect 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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
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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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
- F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
-
- 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
- F04B53/10—Valves; Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a metering pump for high-performance micro-delivery, which comprises: a cylinder body; a pump head mounted on the cylinder block; the inlet check valve and the outlet check valve are both arranged on the pump head; a first diaphragm disposed between the pump head and the cylinder block, forming a medium chamber with the pump head, and forming a hydraulic pressure chamber with the cylinder block; wherein the media chamber is in communication with the inlet check valve and the outlet check valve; the valve body is arranged in the hydraulic cavity; a valve stem movable relative to the valve body, the valve stem being connected to the first diaphragm; one end of the elastic piece is connected with the valve body, and the other end of the elastic piece is connected with the valve rod; the moving piece is arranged in the hydraulic cavity and can move relative to the cylinder body; and the power part is used for driving the moving part to move. The invention can provide enough negative pressure, ensure normal medium suction, ensure normal and stable medium conveying, and is especially suitable for micro-conveying.
Description
Technical Field
The invention relates to the technical field of metering pumps, in particular to a high-performance micro-delivery metering pump.
Background
The metering pump has the advantages of accurate and adjustable delivery amount and the like, and is ideal equipment for precisely metering and adding the fluid. Nowadays, the method is widely applied to various fields of pharmaceutical industry, food and beverage industry and petrochemical industry, and is responsible for metering and adding highly corrosive, toxic, highly viscous and high-pressure media in the process.
In chinese patent application No.: the utility model discloses a first diaphragm type measuring pump is disclosed in CN201710981373.5, is equipped with the pump head on this first diaphragm type measuring pump, the pump head includes preceding pump head, back pump head, cylinder liner, limit valve, sealing connection between preceding pump head and the back pump head, sealing connection between back pump head and the cylinder liner, limit valve installs inside the pump head of back, still be equipped with first diaphragm of metal and pump head connecting plate between preceding pump head and the back pump head, a side and back pump head sealing connection of pump head connecting plate, another side is through first diaphragm of metal and preceding pump head sealing connection, this face that the pump head connecting plate is used for being connected with the first diaphragm of metal is equipped with cyclic annular sealed protruding. The first diaphragm in the prior art is easy to deform in the using process, the deformation is larger and larger along with time, and the change of the front-back movement distance and the movement amount of the first diaphragm is gradually influenced, so that the negative pressure difference required by sucking a medium is influenced, and the larger the deformation is, the smaller the pressure difference is, and the poorer the sucking performance of the medium is. If a sufficient negative pressure is not provided, the medium cannot be sucked normally, and the medium cannot be conveyed normally. Accordingly, the present application is directed to solving the above-mentioned problems.
Disclosure of Invention
In order to solve the technical problem in at least one aspect in the background art, the invention provides a metering pump for high-performance micro-delivery.
The invention provides a metering pump for high-performance micro-delivery, which comprises:
a cylinder body;
a pump head mounted on said cylinder;
an inlet check valve and an outlet check valve which are both arranged on the pump head;
a first diaphragm disposed between the pump head and the cylinder body, forming a medium chamber with the pump head, and forming a hydraulic pressure chamber with the cylinder body; wherein the media chamber is in communication with the inlet check valve and the outlet check valve;
the valve body is arranged in the hydraulic cavity;
a valve stem movable relative to the valve body, the valve stem being connected to the first diaphragm;
one end of the elastic piece is connected with the valve body, and the other end of the elastic piece is connected with the valve rod;
the moving piece is arranged in the hydraulic cavity and can move relative to the cylinder body;
and the power part is used for driving the moving part to move.
Preferably, a first channel and a second channel are arranged on the pump head, and both the first channel and the second channel are obliquely arranged; wherein the content of the first and second substances,
the inlet check valve is communicated with the medium cavity through the first channel;
the outlet check valve is in communication with the media chamber through the second passage.
Preferably, a sealing ring is arranged between the valve body and the cylinder body.
Preferably, the moving member is a plunger, one end of the plunger extends into the hydraulic chamber, and the other end of the plunger is connected with the power part.
Preferably, an oil supplementing hole is formed in the cylinder body;
the metering pump also comprises an oil supplementing valve, and the oil supplementing valve is arranged on the cylinder body and is communicated with the oil supplementing hole;
the valve body is provided with a first connecting channel and a second connecting channel, and the first connecting channel is communicated with the oil replenishing valve; the second connecting channel is communicated with the hydraulic cavity;
a third connecting channel is arranged on the valve rod, the third connecting channel is provided with a first position and a second position, wherein,
when the third connecting channel is at the first position, the first connecting channel and the second connecting channel are not communicated;
when the third connecting passage is in the second position, the first connecting passage communicates with the second connecting passage through the third connecting passage.
Preferably, a pressure relief channel and a pressure relief hole are arranged on the cylinder body; the pressure relief channel is communicated with the hydraulic cavity;
the metering pump further comprises a safety valve, and the safety valve is communicated with the pressure relief channel and the pressure relief hole.
Preferably, the metering pump further comprises an oil pool, and the oil pool is communicated with the pressure relief hole and the oil supplementing hole.
Preferably, the metering pump further comprises:
a discharge pipe communicated with the outlet check valve;
a second membrane disposed within the discharge tube; and a buffer cavity is formed between one side of the second diaphragm, which is far away from the outlet one-way valve, and the discharge pipe. A fluid is arranged in the buffer cavity;
and the first joint is communicated with the buffer cavity.
Preferably, the metering pump further comprises an air bag and a second joint, wherein the air bag is arranged in the buffer cavity; the second connector is in communication with the air bag.
The invention has the beneficial effects that:
by connecting the first diaphragm to the valve stem. The sucking performance is reliable, and even if the first diaphragm deforms, when the moving piece moves rightwards, the valve rod and the first diaphragm are driven to automatically move to the right position by utilizing the resetting function of the elastic piece. When the moving piece moves leftwards, the hydraulic oil extrudes the valve rod and the first diaphragm, and the diaphragm moves to the left position.
The distance and the movement amount of the first diaphragm moving left and right are basically stable, and the negative pressure difference required by the sucked medium is not influenced. Can provide enough negative pressure, guarantee normal suction medium, guarantee normal, stable transport medium.
Drawings
FIG. 1 is a cross-sectional view of the present disclosure;
FIG. 2 is a cross-sectional view of a valve body, valve stem, etc. of the present disclosure;
fig. 3 is a schematic diagram of a prior art structure.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present application may be combined with each other; the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-2, the present invention provides a high performance micro-delivery metering pump, comprising:
a cylinder body 1; a pump head 2 mounted on the cylinder body 1; an inlet check valve 3 and an outlet check valve 4 are both mounted on the pump head 2.
A first diaphragm 5 disposed between the pump head 2 and the cylinder 1, forming a medium chamber 6 with the pump head 2, and forming a hydraulic pressure chamber 7 with the cylinder 1; wherein the medium cavity 6 is communicated with the inlet check valve 3 and the outlet check valve 4;
a valve body 8 arranged in the hydraulic chamber 7; a valve stem 9 movable relative to the valve body 8, the valve stem 9 being connected to the first diaphragm 5; one end of the elastic piece 10 is connected with the valve body 8, the other end of the elastic piece is connected with the valve rod 9, and the elastic piece 10 can be a spring; a moving member 11 disposed in the hydraulic chamber 7 and movable relative to the cylinder 1; and the power part is used for driving the moving part 11 to move. The power part drives the moving piece 11 to reciprocate, and the suction and the discharge of the medium are realized. The hydraulic chamber 7 may be filled with hydraulic oil.
When the moving piece 11 moves rightwards, the volume of the hydraulic cavity 7 is increased, the first diaphragm 5 is driven to deform rightwards, and the medium cavity 6 forms negative pressure.
The external medium enters the medium cavity 6 through the inlet check valve 3 under the action of pressure difference.
When the moving piece 11 moves leftwards, the volume of the hydraulic cavity 7 is reduced, the first diaphragm 5 is driven to deform leftwards, and the pressure intensity of the medium cavity 6 is increased. The medium in the medium chamber 6 is discharged through the outlet check valve 4.
When the moving member 11 moves leftwards, the valve rod 9 and the first diaphragm 5 are extruded by hydraulic oil, and the first diaphragm 5 is driven to deform. The elastic member 10 is compressed. When the moving member 11 moves rightwards, the elastic member 10 releases the elastic force to drive the valve rod 9 to move rightwards.
In this embodiment, the first diaphragm 5 is connected to the valve rod 9. The sucking performance is reliable, even if the first diaphragm 5 is deformed, when the moving piece 11 moves rightwards, the valve rod 9 and the first diaphragm 5 are driven to automatically move to the right position by utilizing the resetting function of the elastic piece 10. When the moving part 11 moves to the left, the hydraulic oil presses the valve rod 9 and the first diaphragm 5, and the diaphragm moves to the left.
The distance and the movement amount of the first diaphragm 5 moving left and right are basically stable, and the negative pressure difference required for sucking the medium is not influenced. Can provide enough negative pressure, guarantee normal suction medium, guarantee normal, stable transport medium.
This embodiment can ensure generation of negative pressure in the medium chamber 6, and can ensure stable conveyance of the medium without causing any influence even if the first diaphragm 5 is deformed.
As a further improvement to the above embodiment, in one embodiment, a first channel 201 and a second channel 202 are provided on the pump head 2, and both the first channel 201 and the second channel 202 are arranged obliquely; wherein, the first and the second end of the pipe are connected with each other,
the inlet check valve 3 is communicated with the medium cavity 6 through the first passage 201; the outlet check valve 4 communicates with the medium chamber 6 through the second passage 202.
FIG. 3 is application number: CN201710981373.5 discloses a metering pump. The medium conveyed by the medium conveying device needs to enter the medium cavity 6 through the vertical channel P1 and the horizontal channel P2, and then the medium cavity 6 is discharged through the horizontal channel P2 and the vertical channel P1 again. The whole medium transmission path is long, the larger the path is, the longer the path is, the larger the pressure loss and the clearance volume are, and the trace medium transmission is not facilitated.
The amount of fluid delivered by the micro-pump is small and the delivery path cannot be too large, thus resulting in the inefficient delivery of micro-media by the prior art.
In this embodiment, by providing the first channel 201 and the second channel 202 which are obliquely arranged, the medium passes through the inlet check valve 3, the first channel 201 and then the medium chamber 6, then passes through the medium chamber 6 and the second channel 202, and is discharged through the outlet check valve 4. The whole medium transmission path is small, the pressure loss and the clearance volume are small, and the micro medium transmission is favorably realized.
As a further improvement of the above embodiment, in one embodiment, a seal ring 13 is provided between the valve body 8 and the cylinder 1. Avoiding leakage.
As a further improvement of the above embodiment, in one embodiment, the moving member 11 is a plunger, one end of which penetrates into the hydraulic chamber 7, and the other end of which is connected to the power unit. The power part can be a crank connecting rod mechanism and drives the plunger to reciprocate so as to realize medium suction and discharge.
As a further improvement of the above embodiment, in one embodiment, the cylinder block 1 is provided with an oil supply hole 101.
The metering pump further comprises an oil supplementing valve 14, and the oil supplementing valve 14 is arranged on the cylinder body 1 and is communicated with the oil supplementing hole 101.
A first connecting channel 801 and a second connecting channel 802 are arranged on the valve body 8, and the first connecting channel 801 is communicated with the oil replenishing valve 14; the second connecting passage 802 communicates with the hydraulic pressure chamber 7.
A third connecting channel 901 is provided on the valve rod 9, the third connecting channel 901 has a first position and a second position, wherein,
when the third connecting channel 901 is in the first position, the first connecting channel 801 and the second connecting channel 802 are not communicated.
When the third connecting passage 901 is in the second position, the first connecting passage 801 communicates with the second connecting passage 802 through the third connecting passage 901.
When the valve rod 9 moves leftward, the third connecting passage 901 is in the first position, and oil is not replenished.
When the valve rod 9 moves to the right, the third connecting passage 901 is in the second position, and the first connecting passage 801 is communicated with the second connecting passage 802 through the third connecting passage 901. External hydraulic oil enters the hydraulic cavity 7 through the oil supplementing hole 101, the oil supplementing valve 14, the first connecting channel 801, the third connecting channel 901 and the second connecting channel 802, and oil supplementation is achieved.
When the valve rod 9 moves to the right position, the oil supplementing oil path is opened, and oil supplementing is started. If the joint of the plunger and the cylinder body 1 leaks, the hydraulic cavity 7 forms negative pressure and starts to supplement oil. If no leakage exists, no negative pressure is formed in the hydraulic oil, oil cannot be supplemented when the oil way is opened, and excessive oil supplement cannot be caused.
In the prior art, if the diaphragm deforms, the limiting valve is always in an oil supplementing state, so that excessive oil is supplemented, and the diaphragm is easy to break down and crack.
As a further improvement of the above embodiment, in one embodiment, the cylinder block 1 is provided with a pressure relief passage 102 and a pressure relief hole 103; the pressure relief channel 102 is communicated with the hydraulic cavity 7; the metering pump further comprises a safety valve 15, and the safety valve 15 is communicated with the pressure relief channel 102 and the pressure relief hole 103. When the oil pressure of the hydraulic cavity 7 is too high, the safety valve 15 is opened, and the hydraulic oil is discharged through the pressure relief passage 102, the safety valve 15 and the pressure relief hole 103.
As a further improvement of the above embodiment, in an embodiment, the metering pump further includes an oil pool 16, and the oil pool 16 is communicated with the pressure relief hole 103 and the oil supplement hole 101. The discharged hydraulic oil enters the oil pool 16 and then passes through the oil supplement hole 101 to perform oil supplement operation.
As a further refinement of the above-described embodiments, in one embodiment, the metering pump further comprises:
a discharge pipe 17 communicating with the outlet check valve 4; a second membrane 18 arranged inside said discharge duct 17; a buffer chamber is formed between the side of the second membrane 18 remote from the outlet non return valve 4 and the discharge conduit 17. A fluid is arranged in the buffer cavity; a first connector 19 is in communication with the buffer chamber.
As a further improvement of the above embodiment, in one embodiment, the metering pump further comprises an air bag 21, a second joint 20, the air bag 21 being disposed in the buffer chamber; the second joint 20 communicates with the airbag 21.
And hydraulic oil is added into the buffer cavity. High-pressure gas is introduced into the airbag 21.
When the medium is discharged through the outlet check valve 4, the medium impacts the second diaphragm 18, pressing the second diaphragm 18 upward. The hydraulic oil presses the air bag 21, and the air bag 21 is cushioned by the gas. Therefore, the medium output flow can be stabilized, and stable output is ensured. The second diaphragm 18 is arranged to avoid direct contact of the medium with the bladder 21 and to avoid corrosion of the bladder 21.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A high performance micro-delivery metering pump, comprising:
a cylinder body;
a pump head mounted on the cylinder block;
an inlet check valve and an outlet check valve which are both arranged on the pump head;
a first diaphragm disposed between the pump head and the cylinder block, forming a medium chamber with the pump head, and forming a hydraulic pressure chamber with the cylinder block; wherein the media chamber is in communication with the inlet check valve and the outlet check valve;
the valve body is arranged in the hydraulic cavity;
a valve stem movable relative to the valve body, the valve stem being connected to the first diaphragm;
one end of the elastic piece is connected with the valve body, and the other end of the elastic piece is connected with the valve rod;
the moving piece is arranged in the hydraulic cavity and can move relative to the cylinder body;
and the power part is used for driving the moving part to move.
2. The metering pump for high performance micro-delivery according to claim 1, wherein a first channel and a second channel are arranged on the pump head, and the first channel and the second channel are both obliquely arranged; wherein the content of the first and second substances,
the inlet check valve is communicated with the medium cavity through the first channel;
the outlet check valve communicates with the media chamber through the second passage.
3. The metering pump for high performance micro-delivery according to claim 1, wherein a sealing ring is provided between the valve body and the cylinder.
4. The metering pump of claim 1, wherein the moving member is a plunger having one end penetrating into the hydraulic chamber and the other end connected to the power unit.
5. The metering pump for high-performance micro-delivery according to claim 1, wherein an oil replenishing hole is formed in the cylinder;
the metering pump also comprises an oil supplementing valve, and the oil supplementing valve is arranged on the cylinder body and is communicated with the oil supplementing hole;
the valve body is provided with a first connecting channel and a second connecting channel, and the first connecting channel is communicated with the oil replenishing valve; the second connecting channel is communicated with the hydraulic cavity;
a third connecting channel is arranged on the valve rod, the third connecting channel is provided with a first position and a second position, wherein,
when the third connecting channel is at the first position, the first connecting channel and the second connecting channel are not communicated;
when the third connecting passage is in the second position, the first connecting passage communicates with the second connecting passage through the third connecting passage.
6. The metering pump for high-performance micro-delivery according to claim 5, wherein the cylinder body is provided with a pressure relief channel and a pressure relief hole; the pressure relief channel is communicated with the hydraulic cavity;
the metering pump further comprises a safety valve, and the safety valve is communicated with the pressure relief channel and the pressure relief hole.
7. The high performance micro-delivery metering pump according to claim 6, further comprising an oil reservoir, the oil reservoir being in communication with the pressure relief bore and the oil replenishment bore.
8. The high performance micro-delivery metering pump according to claim 1, further comprising:
a discharge pipe communicated with the outlet check valve;
a second membrane disposed within the discharge tube; and a buffer cavity is formed between one side of the second diaphragm, which is far away from the outlet one-way valve, and the discharge pipe. A fluid is arranged in the buffer cavity;
and the first joint is communicated with the buffer cavity.
9. The metering pump for high performance micro-delivery according to claim 8, further comprising an air bag, a second joint, the air bag being disposed within the buffer chamber; the second connector is in communication with the air bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210818908.8A CN115263708A (en) | 2022-07-13 | 2022-07-13 | Metering pump for high-performance micro-conveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210818908.8A CN115263708A (en) | 2022-07-13 | 2022-07-13 | Metering pump for high-performance micro-conveying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115263708A true CN115263708A (en) | 2022-11-01 |
Family
ID=83765994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210818908.8A Withdrawn CN115263708A (en) | 2022-07-13 | 2022-07-13 | Metering pump for high-performance micro-conveying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115263708A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117267104A (en) * | 2023-10-09 | 2023-12-22 | 烟台东德氢能技术有限公司 | Diaphragm protection method of built-in oil-air pressure accompanying control device of diaphragm compressor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246351A (en) * | 1991-12-17 | 1993-09-21 | Lews Herbert Ott Gmbh & Co. | Hydraulically driven diaphragm pump with diaphragm stroke limitation |
| CN1975163A (en) * | 2006-12-01 | 2007-06-06 | 杭州大潮泵业制造有限公司 | High-pressure hydraulic diaphragm metering pump |
| CN208996884U (en) * | 2018-11-06 | 2019-06-18 | 山东齐胜工贸股份有限公司 | Diaphragm pump intake buffer unit |
| CN209838670U (en) * | 2019-03-20 | 2019-12-24 | 宁波凯明机器制造有限公司 | Damping device for hydraulic end of plunger high-pressure reciprocating pump |
| CN212360123U (en) * | 2020-05-27 | 2021-01-15 | 德帕姆(杭州)泵业科技有限公司 | Micro-flow metering pump with diaphragm mechanism |
| CN112539164A (en) * | 2020-12-07 | 2021-03-23 | 哈尔滨凯泉泵业有限公司 | Hydraulic diaphragm metering pump with pressure-equalizing and limiting oil supplementing functions |
| CN214577563U (en) * | 2020-12-17 | 2021-11-02 | 德普罗泵业(浙江)有限公司 | Diaphragm type metering pump |
-
2022
- 2022-07-13 CN CN202210818908.8A patent/CN115263708A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246351A (en) * | 1991-12-17 | 1993-09-21 | Lews Herbert Ott Gmbh & Co. | Hydraulically driven diaphragm pump with diaphragm stroke limitation |
| CN1975163A (en) * | 2006-12-01 | 2007-06-06 | 杭州大潮泵业制造有限公司 | High-pressure hydraulic diaphragm metering pump |
| CN208996884U (en) * | 2018-11-06 | 2019-06-18 | 山东齐胜工贸股份有限公司 | Diaphragm pump intake buffer unit |
| CN209838670U (en) * | 2019-03-20 | 2019-12-24 | 宁波凯明机器制造有限公司 | Damping device for hydraulic end of plunger high-pressure reciprocating pump |
| CN212360123U (en) * | 2020-05-27 | 2021-01-15 | 德帕姆(杭州)泵业科技有限公司 | Micro-flow metering pump with diaphragm mechanism |
| CN112539164A (en) * | 2020-12-07 | 2021-03-23 | 哈尔滨凯泉泵业有限公司 | Hydraulic diaphragm metering pump with pressure-equalizing and limiting oil supplementing functions |
| CN214577563U (en) * | 2020-12-17 | 2021-11-02 | 德普罗泵业(浙江)有限公司 | Diaphragm type metering pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117267104A (en) * | 2023-10-09 | 2023-12-22 | 烟台东德氢能技术有限公司 | Diaphragm protection method of built-in oil-air pressure accompanying control device of diaphragm compressor |
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Application publication date: 20221101 |