CN114562446A - Alarm type reciprocating pump - Google Patents
Alarm type reciprocating pump Download PDFInfo
- Publication number
- CN114562446A CN114562446A CN202210166293.5A CN202210166293A CN114562446A CN 114562446 A CN114562446 A CN 114562446A CN 202210166293 A CN202210166293 A CN 202210166293A CN 114562446 A CN114562446 A CN 114562446A
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- CN
- China
- Prior art keywords
- hydraulic
- outer tube
- pump body
- pump
- alarm
- 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.)
- Withdrawn
Links
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
- F04B43/10—Pumps having fluid drive
- F04B43/113—Pumps having fluid drive the actuating fluid being controlled by at least one valve
- F04B43/1133—Pumps having fluid drive the actuating fluid being controlled by at least one valve with fluid-actuated pump inlet or outlet valves; with two or more pumping chambers in series
-
- 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
- F04B51/00—Testing machines, pumps, or pumping installations
-
- 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
- F04B53/06—Venting
-
- 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
- F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
Abstract
The invention discloses an alarm type reciprocating pump which comprises an alarm, a flow guide joint, a hydraulic sensor, a pump body, an inner pipe and an outer pipe, wherein a medium cavity is arranged in the middle of the inner pipe, the inner pipe is arranged in the middle of the outer pipe, the outer pipe is arranged in the middle of the pump body, two ends of the medium cavity are respectively arranged at two ends of the pump body, the outer wall of the outer pipe and the inner wall of the pump body are enclosed to form a hydraulic cavity, the upper end of the inner pipe is a flow guide part, the flow guide part is arranged above the outer pipe, the flow guide joint is arranged at the flow guide part, the flow guide part is communicated to the hydraulic sensor, and the hydraulic sensor is electrically connected to the alarm. If inner tube or outer tube take place the damage, under the water conservancy diversion effect of inner tube and outer tube, medium or hydraulic oil can flow to water conservancy diversion portion, lose the outer tube restriction simultaneously and be transmitted to hydraulic sensor by the water conservancy diversion joint, hydraulic sensor detects and sends signal to the alarm under the condition that has medium or hydraulic oil between inner tube and the outer tube, and the alarm sends the police dispatch newspaper, reminds maintainer in time to change inner tube and outer tube.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to an alarm type reciprocating pump.
[ background of the invention ]
In the industries of energy, chemical engineering, environmental protection and the like, the hydraulic hose diaphragm type reciprocating pump is widely used for transporting high-viscosity and particle-containing media. The hydraulic hose diaphragm type reciprocating pump generally comprises a pump body and a hose in the middle of the pump body, wherein a medium flows in the middle of the hose, and hydraulic oil is introduced between the hose and the inner wall of the pump body so as to control the expansion degree of the hose. The medium and the hydraulic oil are easy to mix because the hose is damaged. In order to play a role of buffering, the hose usually comprises an inner pipe and an outer pipe sleeved on the outer wall of the inner pipe, so that even if one of the inner pipe and the outer pipe is damaged, the mixed flow of the medium and the hydraulic oil cannot be directly caused.
But when one of inner tube and outer tube takes place the damage, just in time need maintain, but because the user is difficult in time to discover because of reasons such as experience, lead to damaged inner tube and outer tube can't in time change, and final inner tube and outer tube are damaged simultaneously, still can cause the problem of medium and hydraulic oil mixed flow.
[ summary of the invention ]
The invention aims to overcome the defects of the prior art and provide an alarm type reciprocating pump for monitoring the damages of an inner pipe and an outer pipe in time.
The technical scheme adopted by the invention is as follows:
the utility model provides an alarm type reciprocating pump, includes the alarm, the water conservancy diversion connects, hydraulic sensor, the pump body, inner tube and outer tube, be the medium chamber in the middle of the inner tube, the inner tube is located in the middle of the outer tube, the outer tube is located in the middle of the pump body, the both ends in medium chamber are located pump body both ends respectively, outer tube outer wall and pump body inner wall enclose together simultaneously and form the hydraulic pressure chamber, the upper end of inner tube is water conservancy diversion portion, water conservancy diversion portion is located the outer tube top, the water conservancy diversion connects the setting in water conservancy diversion portion department, the water conservancy diversion connects and communicates to hydraulic sensor, hydraulic sensor electricity is connected to the alarm.
Preferably, both ends of the medium cavity are respectively provided with a liquid discharge one-way valve and a liquid inlet one-way valve.
Preferably, a hydraulic oil channel communicated to the hydraulic cavity is formed in the side wall of the pump body.
Preferably, hydraulic oil passageway department is provided with the limit valve, and the limit valve is controlled the logical closure of hydraulic oil passageway, and the cover is equipped with the spring on the limit valve, and the spring extrudees the limit valve towards the outer tube.
Preferably, the pump body is provided with an exhaust joint communicated to the upper end of the hydraulic cavity, and an exhaust port of the exhaust joint is located outside the pump body.
Preferably, an exhaust guide ring is arranged between the upper end of the hydraulic cavity and the exhaust joint.
Preferably, the exhaust joint is an exhaust check valve.
Preferably, a flow guide ring is arranged between the flow guide joint and the upper end of the outer pipe.
Preferably, the inner wall surface of the pump body is a spindle curved surface.
After the technical scheme is adopted, the invention has the following advantages:
in the invention, the medium cavity in the middle of the inner pipe is used for flowing medium, the hydraulic cavity outside the outer pipe is used for flowing hydraulic oil, the expansion degree of the inner pipe and the outer pipe is controlled under the matching of the pressure in the medium cavity and the pressure in the hydraulic cavity, and under the normal condition, the inner pipe and the outer pipe are jointed under the pressure action of the medium cavity and the hydraulic cavity, so that a gap is prevented from being generated between the inner pipe and the outer pipe. But if inner tube or outer tube take place the damage, then medium or hydraulic oil will permeate between inner tube and the outer tube and make and leave the gap between inner tube and the outer tube, under the water conservancy diversion effect of inner tube and outer tube, medium or hydraulic oil can flow to water conservancy diversion portion, lose the outer tube restriction simultaneously and be transmitted to hydraulic sensor by water conservancy diversion joint, hydraulic sensor detects and sends signal to alarm under the condition that has medium or hydraulic oil between inner tube and the outer tube, the alarm sends out the police dispatch newspaper, remind maintainer in time to change inner tube and outer tube, effectively avoid the emergence of medium chamber and hydraulic pressure chamber mixed flow condition.
[ description of the drawings ]
The invention is further described below with reference to the accompanying drawings:
fig. 1 is a schematic sectional view of a reciprocating pump according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of a liquid discharge state of the reciprocating pump according to an embodiment of the present invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
[ detailed description ] embodiments
In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are connected without a connection relationship by an excessive structure and are connected to each other only by the connection structure to form a whole. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Example (b):
referring to fig. 1 to 3, the present embodiment provides an alarm type reciprocating pump, which includes an alarm, a flow guide joint 3, a hydraulic pressure sensor, a pump body, an inner tube 5 and an outer tube 6.
The pump body comprises two pump head flanges 1, two pressing plates 2 and a pump pipe 12, wherein the two pump head flanges 1 are respectively arranged at two ends of the pump pipe 12, the two pressing plates 2 are respectively arranged at two ends of the pump pipe 12, the pressing plates 2 are annular, and the pump head flanges 1 compress the pressing plates 2 at the end part of the pump pipe 12.
The middle of the inner pipe 5 is a medium cavity 13, the inner pipe 5 is positioned in the middle of the outer pipe 6, the outer pipe 6 is positioned in the middle of the pump pipe 12, the liquid discharge one-way valve 9 is installed on the pump head flange 1 at the upper end of the pump pipe 12, the liquid inlet one-way valve 15 is installed on the pump head flange 1 at the lower end of the pump pipe 12, so that the liquid discharge one-way valve 9 and the liquid inlet one-way valve 15 are respectively positioned at the upper end and the lower end of the medium cavity 13, a medium enters the medium cavity 13 through the liquid inlet one-way valve 15, and then leaves the medium cavity 13 from the liquid discharge one-way valve 9. The greater the pressure of the medium, the greater the expansion of the inner pipe 5 and the outer pipe 6.
The upper end of the inner tube 5 is located above the outer tube 6 and the lower end of the inner tube 5 is located below the outer tube 6. Taking the upper end of the inner tube 5 and the upper end of the outer tube 6 as an example, the pump head flange 1 at the upper end of the pump tube 12 presses the upper end of the inner tube 5 against the pressure plate 2, and the pressure plate 2 presses the end of the outer tube 6 against the end wall of the pump tube 12, thereby positioning the ends of the inner and outer tubes 5, 6 in the pump body.
The outer wall of the outer pipe 6 and the inner wall of the pump pipe 12 are enclosed to form a hydraulic cavity 14, a hydraulic oil channel 8 is formed in the side wall of the pump pipe 12, and the hydraulic oil channel 8 is communicated to the hydraulic cavity 14. Hydraulic oil enters the hydraulic chamber 14 through the hydraulic oil passage 8 outside the pump pipe 12, and hydraulic oil in the hydraulic chamber 14 can also reach the outside of the pump pipe 12 through the hydraulic oil passage 8. The greater the pressure of the hydraulic oil in the hydraulic chamber 14, the greater the contraction degree of the inner tube 5 and the outer tube 6.
Referring to fig. 1, hydraulic oil is injected into the hydraulic chamber 14 at the hydraulic oil passage 8, the pressure in the hydraulic chamber 14 increases, so that the inner tube 5 and the outer tube 6 contract, and the medium in the medium chamber 13 is discharged out of the pump body through the liquid discharge check valve 9. Referring to fig. 2, a medium is injected into the medium cavity 13 at the liquid inlet check valve 15, the intermediate pressure of the inner pipe 5 is increased, so that the inner pipe 5 and the outer pipe 6 are expanded, the space of the hydraulic cavity 14 is reduced, and hydraulic oil in the hydraulic cavity 14 is discharged out of the pump body through the hydraulic oil channel 8. Under the action of oil pressure in the hydraulic cavity 14 and medium pressure in the medium cavity 13, the outer wall of the inner tube 5 and the inner wall of the outer tube 6 are kept in a joint state in the normal liquid feeding and discharging process, and if the inner tube 5 or the outer tube 6 is damaged, medium or hydraulic oil can permeate between the inner tube 5 and the outer tube 6.
Both ends of the inner tube 5 are flow guide parts, the flow guide joint 3 is positioned at the flow guide part, and meanwhile, the flow guide joint 3 is also arranged on the pressing plate 2 so as to obtain positioning on the pump tube 12. The outer end of the diversion connector 3 is positioned outside the pump pipe 12 and is communicated with a hydraulic sensor, the hydraulic sensor is electrically connected to an alarm through a control board, and the inner end of the diversion connector 3 is positioned at the diversion part. Take the damaged condition of inner tube 5 as an example, the medium can follow the damaged inflow of inner tube 5 and outer tube 6 in the department of inner tube 5, the medium struts inner tube 5 outer wall and outer tube 6 inner wall, produce the gap between inner tube 5 outer wall and the outer tube 6 inner wall, along with the increase of the seepage volume, the medium flows to the upper end and the lower extreme of outer tube 6 gradually, until reaching the water conservancy diversion joint 3 department in the outer tube 6 outside, flow to hydraulic sensor and detected by hydraulic sensor via water conservancy diversion joint 3, control panel control alarm sends the police dispatch newspaper this moment, the suggestion staff changes inner tube 5 and outer tube 6, avoid because of changing untimely inner tube 5 and outer tube 6 simultaneously damaged, lead to hydraulic oil entering medium chamber 13 in the hydraulic pressure chamber 14, and medium entering hydraulic pressure chamber 14 in the medium chamber 13, produce the mixed flow of medium and hydraulic oil.
Preferably, a flow guide ring 10 is arranged on the pressure plate 2 at the upper end of the pump pipe 12, the pressure plate 2 presses the flow guide ring 10 against the upper end of the outer pipe 6, and when the inner pipe 5 or the outer pipe 6 is damaged, the flow guide ring 10 guides the medium or the hydraulic oil seeped from the upper end of the outer pipe 6 to the flow guide joint 3. The guide ring 10 occupies a space between a part of the guide joint 3 and the upper end of the outer pipe 6 for supplying the medium or the hydraulic oil, and increases the flow rate of the medium or the hydraulic oil, so that when the medium or the hydraulic oil seeps out of the upper end of the outer pipe 6, the guide ring 10 can enable the medium or the hydraulic oil to reach the guide joint 3 more quickly and be detected by the hydraulic sensor.
The hydraulic oil passageway 8 department is provided with limit valve 7, and the cover is equipped with the spring on the limit valve, and the one end top of spring is on the inner wall of hydraulic oil passageway 8, and the other end is pressed on limit valve 7, and the spring extrudees limit valve 7 towards outer tube 6 all the time under self deformation effect.
When oil enters the hydraulic oil channel 8, the oil pressure is matched with the spring to push the limiting valve 7 to the outer pipe 6, so that the hydraulic oil channel 8 is in an open state, and hydraulic oil can smoothly enter the hydraulic cavity 14. On the contrary, when the medium is introduced into the medium cavity 13, the inner tube 5 and the outer tube 6 expand, the outer tube 6 contacts the limit valve 7 and overcomes the elastic force of the spring, the limit valve 7 is pushed out of the hydraulic cavity 14 until the limit valve 7 seals the hydraulic oil channel 8, and at the moment, the hydraulic oil channel 8 can limit the further expansion of the inner tube 5 and the outer tube 6 through the limit valve 7.
Preferably, the inner wall surface of the pump tube 12 is a spindle curved surface to adapt to the deformation characteristics of the inner tube 5 and the outer tube 6, so as to provide a sufficient deformation expansion space for the inner tube 5 and the outer tube 6, and avoid premature restriction of the inner tube 5 and the outer tube 6.
In order to solve the problem that air in the hydraulic chamber 14 may not be discharged from the hydraulic oil passage 8 when the hydraulic oil is injected into the hydraulic chamber 14, the pump pipe 12 is provided with an exhaust joint 4 communicated to the hydraulic chamber 14, the exhaust joint 4 is located at an end portion of the hydraulic chamber 14, and an exhaust port of the exhaust joint 4 is located outside the pump body. When the hydraulic oil is injected into the hydraulic cavity 14 at the hydraulic oil channel 8, the exhaust joint 4 is opened, air in the hydraulic cavity 14 can flow to the exhaust joint 4 at the end of the hydraulic cavity 14 and is exhausted out of the pump body through the exhaust joint 4, and the influence on the injection flow of the hydraulic oil is reduced.
It is further preferred that the vent connector 4 is a vent check valve to prevent air outside the pump body from entering the hydraulic chamber 14 through the vent connector 4.
In addition, an exhaust guide ring 11 is further arranged between the upper end of the hydraulic cavity 14 and the exhaust joint 4 in the embodiment, the exhaust guide ring 11 is pressed on the upper end of the pump pipe 12 by the upper end of the outer pipe 6 for positioning, and the guide ring 11 fills the part, located above the exhaust joint 4, of the upper end of the hydraulic cavity 14, so that air in the hydraulic cavity 14 can be directly discharged after reaching the exhaust joint 4, accumulation cannot occur at the top of the hydraulic cavity 14, and the exhaust process of the air is guided.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (9)
1. The utility model provides an alarm type reciprocating pump, a serial communication port, including alarm, water conservancy diversion joint, hydraulic sensor, the pump body, inner tube and outer tube, be the medium chamber in the middle of the inner tube, the inner tube is located in the middle of the outer tube, the outer tube is located in the middle of the pump body, the both ends in medium chamber are located pump body both ends respectively, outer tube outer wall and pump body inner wall enclose together simultaneously and form hydraulic pressure chamber, the upper end of inner tube is water conservancy diversion portion, water conservancy diversion portion is located the outer tube top, the water conservancy diversion joint sets up in water conservancy diversion portion department, the water conservancy diversion connects and communicates to hydraulic sensor, hydraulic sensor electricity is connected to the alarm.
2. The reciprocating pump of claim 1, wherein the medium chamber is provided at both ends thereof with a liquid discharge check valve and a liquid feed check valve, respectively.
3. The reciprocating pump with alarm according to claim 1, wherein the pump body has a hydraulic oil passage formed in a side wall thereof and connected to the hydraulic chamber.
4. The alarm type reciprocating pump of claim 3, wherein the hydraulic oil channel is provided with a limit valve, the limit valve controls the opening and closing of the hydraulic oil channel, and a spring is sleeved on the limit valve and presses the limit valve towards the outer pipe.
5. The reciprocating pump with alarm according to claim 3, wherein the pump body is provided with an exhaust joint communicated to the upper end of the hydraulic chamber, and an exhaust port of the exhaust joint is located outside the pump body.
6. The reciprocating pump with alarm according to claim 5, wherein an exhaust guide ring is provided between the upper end of the hydraulic chamber and the exhaust joint.
7. The reciprocating pump of claim 5, wherein the exhaust fitting is an exhaust check valve.
8. The reciprocating pump with alarm according to claim 1, wherein a deflector ring is provided between the deflector fitting and the upper end of the outer tube.
9. The reciprocating pump of claim 1, wherein the inner wall surface of the pump body is a spindle curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210166293.5A CN114562446A (en) | 2022-02-23 | 2022-02-23 | Alarm type reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210166293.5A CN114562446A (en) | 2022-02-23 | 2022-02-23 | Alarm type reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114562446A true CN114562446A (en) | 2022-05-31 |
Family
ID=81714396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210166293.5A Withdrawn CN114562446A (en) | 2022-02-23 | 2022-02-23 | Alarm type reciprocating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114562446A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3210240A1 (en) * | 1982-03-20 | 1983-10-06 | Heinz M Naegel | Diaphragm displacement pump |
| GB2161221A (en) * | 1984-06-13 | 1986-01-08 | Schlesiger & Co Kg Feluwa | Flexible chamber pump |
| JPH09151855A (en) * | 1995-11-28 | 1997-06-10 | Nikkiso Co Ltd | Double tube diaphragm pump, double tube diaphragm and double tube |
| CN2901445Y (en) * | 2006-05-22 | 2007-05-16 | 重庆水泵厂有限责任公司 | Sac type warning disphragm and reciprocating meter pump with said diaphragm |
| CN101644249A (en) * | 2009-08-18 | 2010-02-10 | 杭州大潮石化设备有限公司 | Hydraulic diaphragm-type reciprocating pump with function of diaphragm breakage alarm |
-
2022
- 2022-02-23 CN CN202210166293.5A patent/CN114562446A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3210240A1 (en) * | 1982-03-20 | 1983-10-06 | Heinz M Naegel | Diaphragm displacement pump |
| GB2161221A (en) * | 1984-06-13 | 1986-01-08 | Schlesiger & Co Kg Feluwa | Flexible chamber pump |
| JPH09151855A (en) * | 1995-11-28 | 1997-06-10 | Nikkiso Co Ltd | Double tube diaphragm pump, double tube diaphragm and double tube |
| CN2901445Y (en) * | 2006-05-22 | 2007-05-16 | 重庆水泵厂有限责任公司 | Sac type warning disphragm and reciprocating meter pump with said diaphragm |
| CN101644249A (en) * | 2009-08-18 | 2010-02-10 | 杭州大潮石化设备有限公司 | Hydraulic diaphragm-type reciprocating pump with function of diaphragm breakage alarm |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220531 |