CN115539396A - Novel double-pump combined strong self-priming pump unit - Google Patents
Novel double-pump combined strong self-priming pump unit Download PDFInfo
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- CN115539396A CN115539396A CN202211513022.9A CN202211513022A CN115539396A CN 115539396 A CN115539396 A CN 115539396A CN 202211513022 A CN202211513022 A CN 202211513022A CN 115539396 A CN115539396 A CN 115539396A
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- Prior art keywords
- pump
- diaphragm pump
- diaphragm
- centrifugal
- liquid level
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/041—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock the priming pump having evacuating action
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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
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/004—Priming of not self-priming pumps
- F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
Abstract
The invention discloses a novel double-pump combined strong self-sucking pump unit, and belongs to the technical field of self-sucking pumps. Including the base, automatically controlled cabinet, centrifugal pump and diaphragm pump, automatically controlled cabinet, the top at the base is all fixed to centrifugal pump and diaphragm pump, the centrifugal pump includes the bearing body, the centrifugal pump passes through main pump motor drive, the main pump motor is connected with automatically controlled cabinet electricity, the export of centrifugal pump is passed through pipeline B and is connected with the liquid level induction room, the side of liquid level induction room is connected with the switch, the switch is connected with automatically controlled cabinet electricity, the diaphragm pump passes through diaphragm pump motor drive, the diaphragm pump motor is connected with automatically controlled cabinet electricity, be connected with pipeline A between diaphragm pump and the liquid level induction room, be equipped with the solenoid valve on the pipeline A, the solenoid valve is connected with automatically controlled cabinet electricity. The centrifugal pump and the diaphragm pump are skillfully combined through the electromagnetic valve, the liquid level meter, the electric control cabinet and the like, so that the purposes of one-key starting and unattended operation are achieved, the operation is simple and convenient, the human resources are saved to a greater extent, the cost is saved, and the benefit and the working efficiency are improved.
Description
Technical Field
The invention relates to the technical field of self-priming pumps, in particular to a novel double-pump combined strong self-priming pump unit.
Background
Along with the development of society, the demand and the requirement of industry increase gradually to the self priming pump, and the self priming pump is developing towards more reliable, more intelligent direction. Conventional self-priming pumps have failed to meet existing needs. The water pump needs the manual work to water injection in to the pump before traditional self priming pump opens, at the inlet line bottom installation bottom valve, treats that water does not have the impeller back completely, starts the water pump, just can normal operating. But in some cold regions there is also a concern about freeze protection and some special media do not allow for pump priming. The common self-sucking pump needs to be pumped before working for the first time, a heat tracing band or steam purging needs to be added in a place with lower environmental temperature in winter, and otherwise, liquid is solidified and cannot be started again. If liquid is discharged after the pump is stopped every time, and the pump needs to be filled when the pump is restarted, the operation is troublesome, and the requirement of a client on unattended operation cannot be met.
Disclosure of Invention
In order to solve the problems, the invention provides a novel double-pump combined strong self-priming pump unit which can replace a long-shaft submerged pump and a common self-priming pump which have great difficulty in installation operation and equipment maintenance.
According to the invention, the common chemical pump and the diaphragm pump are connected with each other constructively and arranged on the same plane, and the common chemical pump has a self-absorption function through intelligent control.
The invention realizes 'one-key start-stop, remote control and unattended' by linkage control of the sensor, the tuning fork switch, the liquid level sensor, the comprehensive switch cabinet and the double pumps, and can replace a long-shaft submerged pump and a common self-priming pump which have great difficulty in installation operation and equipment maintenance.
The invention is realized by the following technical scheme:
the utility model provides a novel strong self priming pump unit is united to double pump, includes base, automatically controlled cabinet, centrifugal pump and diaphragm pump are all fixed in the top of base, the centrifugal pump includes the bearing body, the centrifugal pump passes through the shaft coupling and the guard shield is connected with the main pump motor, the centrifugal pump passes through main pump motor drive, the main pump motor is connected with automatically controlled cabinet electricity, the inside of centrifugal pump is equipped with the restricted aperture subassembly, the export of centrifugal pump is passed through pipeline B and is connected with the liquid level response room, the side of liquid level response room is connected with the switch, the switch is connected with automatically controlled cabinet electricity, the diaphragm pump passes through diaphragm pump motor drive, the diaphragm pump motor is connected with automatically controlled cabinet electricity, be connected with pipeline A between diaphragm pump and the liquid level response room, be equipped with the solenoid valve on the pipeline A, the solenoid valve is connected with automatically controlled cabinet electricity, the side of centrifugal pump is connected with the drain line.
The diaphragm pump may adopt a double diaphragm pump.
The diaphragm pump may employ a single diaphragm pump.
The switch is a tuning fork switch.
The diaphragm pump includes the lid on the diaphragm pump, the lid side is connected with the relief valve on the diaphragm pump, the relief valve includes the pressure release pipe, the inside right side of pressure release pipe is equipped with sealed piece, the right side of sealed piece is connected with the closing plate, the outer end of closing plate is connected with the slider, the right side cover of pressure release pipe is equipped with the sleeve, the spout has been seted up to telescopic inner wall, the slider falls into the inside of spout, be connected with the spring between closing plate and the sleeve, first through-hole has been seted up on the sealed piece, the second through-hole has been seted up on the sleeve.
Compared with the prior art, the invention has the beneficial effects that:
the centrifugal pump and the diaphragm pump are skillfully combined through the electromagnetic valve, the liquid level meter and the like, so that the purposes of one-key starting and unattended operation are achieved, the human resources are saved to a greater extent, the cost is saved, and the benefit and the working efficiency are improved; the diaphragm pump in the structure can adopt a double-diaphragm structure, and the pressure sensing instrument between the two diaphragms senses the pressure change after the main diaphragm is broken, so that an alarm signal can be transmitted to the central control room, corresponding judgment can be rapidly made, and the safety performance is high; the invention has simple operation, convenient maintenance and wide application; the invention does not need manual water injection, and only needs to introduce water into the pump body from the bottom of the pool and submerge the impeller, so that medium transmission can be realized; the automatic self-priming device is high in automation degree, after water rises to a specified liquid level, the liquid level can be sensed, the vacuum pump is controlled to stop, the main pump is automatically started, and quick self-priming can be achieved.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic perspective view of the present invention;
fig. 4 is a schematic sectional view of the relief valve according to the present invention.
In the figure: 1. a base; 2. an electric control cabinet; 3. a main pump motor; 4. a coupler and a shield; 5. a bearing body; 6. a centrifugal pump; 7. a restrictor orifice assembly; 8. a diaphragm pump; 9. a diaphragm pump motor; 10. an electromagnetic valve; 11. a liquid level sensing chamber; 12. a switch; 13. a liquid discharge pipeline; 14. a pipeline A; 15. a pipe B; 16. an upper cover body of the diaphragm pump; 17. a pressure relief pipe; 18. a sealing block; 19. a sealing plate; 20. a slider; 21. a chute; 22. a sleeve; 23. a spring; 24. a first through hole; 25. a second via.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 3 of the attached drawings of the specification, a novel double-pump combined strong self-priming pump unit comprises a base 1, an electric control cabinet 2, a centrifugal pump 6 and a diaphragm pump 8, wherein the electric control cabinet 2, the centrifugal pump 6 and the diaphragm pump 8 are all fixed above the base 1, the centrifugal pump 6 comprises a bearing body 5, the centrifugal pump 6 is connected with a main pump motor 3 through a coupler and a shield 4, the centrifugal pump 6 is driven by the main pump motor 3, the main pump motor 3 is electrically connected with the electric control cabinet 2, a limiting plate assembly 7 is arranged inside the centrifugal pump 6, an outlet of the centrifugal pump 6 is connected with a liquid level induction chamber 11 through a pipeline B15, a switch 12 is connected to the side of the liquid level induction chamber 11, the switch 12 is electrically connected with the electric control cabinet 2, the diaphragm pump 8 is driven by the diaphragm pump motor 9, the diaphragm pump motor 9 is electrically connected with the electric control cabinet 2, a pipeline a14 is connected between the diaphragm pump 8 and the liquid level induction chamber 11, an electromagnetic valve 10 is arranged on the pipeline a14, the electromagnetic valve 10 is electrically connected with the electric control cabinet 2, and a liquid discharge pipeline 13 is connected to the side of the centrifugal pump 6.
The diaphragm pump 8 may be a double diaphragm pump.
The diaphragm pump 8 may be a single diaphragm pump.
The switch 12 is a tuning fork switch.
As shown in fig. 4 of the accompanying drawings of the specification, the diaphragm pump 8 includes a diaphragm pump upper cover 16, a pressure release valve is connected to the side surface of the diaphragm pump upper cover 16, the pressure release valve includes a pressure release pipe 17, a sealing block 18 is arranged on the right side of the inside of the pressure release pipe 17, a sealing plate 19 is connected to the right side of the sealing block 18, a slider 20 is connected to the outer end of the sealing plate 19, a sleeve 22 is sleeved on the right side of the pressure release pipe 17, a sliding groove 21 is formed in the inner wall of the sleeve 22, the slider 20 falls into the sliding groove 21, a spring 23 is connected between the sealing plate 19 and the sleeve 22, a first through hole 24 is formed in the sealing block 18, and a second through hole 25 is formed in the sleeve 22.
Example 1
The utility model provides a novel strong self priming pump unit is united to double pump, the on-line screen storage device comprises a base 1, automatically controlled cabinet 2, centrifugal pump 6 and diaphragm pump 8 are all fixed in base 1's top, centrifugal pump 6's right-hand member has connected gradually bearing body 5, shaft coupling and guard shield 4 and main pump motor 3, centrifugal pump 6 is through the drive of main pump motor 3, main pump motor 3 is connected with automatically controlled cabinet 2 electricity, centrifugal pump 6's inside is equipped with restricted aperture board subassembly 7, centrifugal pump 6's export is passed through pipeline B15 and is connected with liquid level induction chamber 11, the side of liquid level induction chamber 11 is connected with switch 12, switch 12 adopts the tuning fork switch, switch 12 is connected with automatically controlled cabinet 2 electricity, diaphragm pump 8 passes through diaphragm pump motor 9 drive, diaphragm pump motor 9 is connected with automatically controlled cabinet 2 electricity, be connected with pipeline A14 between diaphragm pump 8 and the liquid level induction chamber 11, be equipped with solenoid valve 10 on the pipeline A14, solenoid valve 10 is connected with automatically controlled cabinet 2 electricity, the side of centrifugal pump 6 is connected with drain pipeline 13.
The diaphragm pump 8 includes lid 16 on the diaphragm pump, 16 sides of lid are connected with the relief valve on the diaphragm pump, the relief valve includes pressure release pipe 17, pressure release pipe 17's inside right side is equipped with sealed piece 18, sealed piece 18's right side is connected with closing plate 19, closing plate 19's outer end is connected with slider 20, pressure release pipe 17's right side cover is equipped with sleeve 22, spout 21 has been seted up to sleeve 22's inner wall, slider 20 falls into spout 21's inside, be connected with spring 23 between closing plate 19 and the sleeve 22, first through-hole 24 has been seted up on the sealed piece 18, second through-hole 25 has been seted up on the sleeve 22. The working principle of the pressure relief valve is as follows: after the pressure is applied to the pressure relief pipe 17, the sealing plate 19 and the sealing block 18 can be pushed rightwards, the spring 23 is synchronously compressed, when the first through hole 24 in the sealing block 18 is moved to the outer side of the pressure relief pipe 17, the pressure can be relieved from the first through hole 24 and the second through hole 25, and after the pressure relief is completed, the sealing plate 19 is restored under the action of the spring 23. The diaphragm pump can be rapidly decompressed, and the pressure in the diaphragm pump can be kept at a required pressure value.
The working flow of the self-priming pump unit in the embodiment is as follows:
(1) Closing the outlet valve of the pump to ensure that the interior of the pump is in a completely closed state;
(2) Pressing a start button or DCS on the electric control cabinet 2 to give a field electric control cabinet start signal, starting a diaphragm pump motor 9, driving a diaphragm pump 8 to start working under the drive of the diaphragm pump motor 9, simultaneously opening an electromagnetic valve 10, pumping pipeline air, and leading water to flow in from a pump inlet pipeline under the action of atmospheric pressure, pass through an impeller and enter a liquid level sensing chamber 11 connected with an outlet three-way short pipe of the centrifugal pump 6;
(3) When the liquid level reachd switch 12 position, switch 12 sensed the water level to give automatically controlled cabinet 2 with the signal, automatically controlled cabinet 2 control solenoid valve 10 closes, and diaphragm pump motor 9 closes, and main pump motor 3 opens, and the unit normal operating opens the outlet valve this moment and can carry out transmission medium.
In this embodiment, the main pump structure: standard centrifugal pump configurations other than submerged pumps may be used. The most common are OH1, OH2, OH3, BB1, etc.
In the embodiment, as the auxiliary self-suction device, the diaphragm pump is an independent mechanism and can be independently maintained and replaced, and gas discharged when the self-suction device performs vacuum pumping can be discharged to a safe position through a pipeline, so that the self-suction device is safe and environment-friendly. The auxiliary self-sucking device does not interfere the operation of the main pump, only plays an auxiliary role, and has the characteristics of durability, practicability, stability, economy and the like compared with other types of self-sucking pumps.
The diaphragm pump can adopt the double-diaphragm structure, even if the first layer diaphragm breaks, the second layer also can be sealed with poisonous, harmful, inflammable and explosive media, and avoid flowing into the outside and cause pollution, harm.
If the transmission medium is inflammable, explosive and toxic working conditions, the diaphragm pump can adopt a double-diaphragm structure, and the pressure sensing instrument between the two diaphragms senses the pressure change after the main diaphragm breaks, so that an alarm signal can be transmitted to the central control room, corresponding judgment can be rapidly made, and the safety performance is high.
The invention realizes double-pump joint control by adopting the centrifugal pump and the diaphragm pump, can monitor leakage and automatically alarm on site by utilizing the existing electrical elements and assisting the alarm device, reduces the number of times of patrol of a post manager, and provides a prerequisite condition for finding hidden dangers and reducing risks in time.
The present embodiment has the following advantages:
(1) Safety: the diaphragm pump design is two diaphragm structures, and when first layer diaphragm broke, the second floor diaphragm also can be sealed poisonous and harmful, inflammable and explosive medium, avoided flowing into the outside, caused the loss. The diaphragm pump is also provided with a diaphragm rupture alarm, so that the diaphragm state can be monitored at any time.
(2) High efficiency: the ultimate vacuum degree is-0.09 MPa, the self-priming height can reach 8m when the self-priming device is matched with a main centrifugal pump for use, the self-priming time can reach 10s, and the requirements of most customers can be met.
(3) And (3) stabilizing: the diaphragm pump diaphragm is synthesized by special materials, can resist strong corrosion and toxic media such as strong acid, strong alkali, alcohols, hydrocarbons and the like, and has reached a mature level after years of improvement on a mechanical structure.
(4) Automation: in order to meet the modern development requirements, the double-pump combined strong self-priming pump unit can be associated with the liquid level of a user pool, only a liquid level switch is needed to be arranged on the liquid level, then a signal is connected into a DCS, and the DCS sends a start-stop signal to an electric control cabinet, so that the high-liquid-level automatic pump starting and the low-liquid-level automatic pump stopping can be realized, and the full-automatic control is realized.
(5) The diversity structure: the liquid level sensing system can be combined by various schemes according to different requirements. Switch-solenoid valves, switch-float valves, differential pressure transmitter-solenoid valves, differential pressure transmitter-float valves, etc. can be used.
Compared with the prior art, the embodiment has the following advantages:
1. the innovation is as follows: the double-pump linkage is adopted, the pump does not need to be filled, liquid can be drained when the pump is stopped, the problem of freezing prevention in winter in cold regions is solved, and convenience is brought to overhaul.
2. Intelligentization: the linkage control and the safety fault alarm are innovatively provided, once the diaphragm is damaged or the diaphragm cannot be normally started after being exhausted for a long time, the diaphragm can be automatically stopped for alarm, and the safety of the whole unit is effectively protected;
3. energy saving and consumption reduction. The remote DCS that has proposed of innovation opens and stops and the chain start-stop of liquid level, can be at remote control or the automatic pump that starts of high liquid level, and the automatic pump that stops of low liquid level, great reduction manual operation. Compared with other products with the same parameter requirements, the motor power is reduced by about 15% -30%.
4. Performance is improved: by optimizing the performance of the diaphragm pump and the impeller of the main pump, the self-priming height can be greatly improved and can reach 8 meters to the maximum;
is safe and stable. Through optimizing the inside spare part of diaphragm pump, the problem of having solved diaphragm pump fragile and not enough performance of innovation, extension diaphragm pump life and stability in use, even the diaphragm damages, alarm system also can discern the fault reason, and the direct machine halt sends alarm signal, has stopped accident's emergence.
According to the invention, through the combination of the chemical centrifugal pump (main pump) and the diaphragm pump, the diaphragm pump is started to suck air in the pump cavity of the main pump and an inlet pipeline, a negative pressure principle is applied to force a medium to fill the pump cavity upwards by itself and to cover the impeller, and at the moment, the main pump is started to continuously pump low-level liquid, so that a common chemical process pump has a self-suction function. And then the start-stop instruction is sent to the combined control cabinet through an electromagnetic valve, a liquid level meter, a sensor and the like, so that the aims of one-key start and intelligent control can be realized.
The structure is novel, unique, compact and practical, and the diaphragm pump can select and match corresponding models according to the caliber and the length of a user pipeline, so that the self-priming time can be controlled within 30s, and compared with a vertical type and box type self-priming pump, the structure is shortened by about 40%.
Because the diaphragm pump evacuation is from inhaling the time short, and a working section only need once open and stop, therefore the operating time of diaphragm pump motor can be ignored almost, only need calculate the consumed power of main pump, consequently this structure compares vertical, box self priming pump and major axis submerged pump, and power consumption can practice thrift 30%, is from inhaling highly being greater than 5m, can reach 8m at most.
In summary, the present invention is only a preferred embodiment, and not intended to limit the scope of the invention, and all equivalent changes and modifications in the shape, structure, characteristics and spirit of the present invention described in the claims should be included in the scope of the present invention.
Claims (5)
1. The utility model provides a novel strong self-priming pump unit is united to double pump which characterized in that: comprises a base (1), an electric control cabinet (2), a centrifugal pump (6) and a diaphragm pump (8), the electric control cabinet (2), the centrifugal pump (6) and the diaphragm pump (8) are all fixed above the base (1), the centrifugal pump (6) comprises a bearing body (5), the centrifugal pump (6) is connected with a main pump motor (3) through a coupler and a shield (4), the centrifugal pump (6) is driven by a main pump motor (3), the main pump motor (3) is electrically connected with the electric control cabinet (2), a restricted orifice plate component (7) is arranged in the centrifugal pump (6), the outlet of the centrifugal pump (6) is connected with the liquid level sensing chamber (11) through a pipeline B (15), the side surface of the liquid level sensing chamber (11) is connected with a switch (12), the switch (12) is electrically connected with the electric control cabinet (2), the diaphragm pump (8) is driven by a diaphragm pump motor (9), the diaphragm pump motor (9) is electrically connected with the electric control cabinet (2), a pipeline A (14) is connected between the diaphragm pump (8) and the liquid level sensing chamber (11), an electromagnetic valve (10) is arranged on the pipeline A (14), the electromagnetic valve (10) is electrically connected with the electric control cabinet (2), and the side surface of the centrifugal pump (6) is connected with a liquid discharge pipeline (13).
2. The novel double-pump combined strong self-priming pump unit as claimed in claim 1, wherein: the diaphragm pump (8) can adopt a double diaphragm pump.
3. The novel double-pump combined strong self-priming pump unit as claimed in claim 1, wherein: the diaphragm pump (8) can adopt a single diaphragm pump.
4. The novel double-pump combined strong self-priming pump unit as claimed in claim 1, wherein: the switch (12) adopts a tuning fork switch.
5. The novel double-pump combined strong self-priming pump unit as claimed in claim 1, wherein: the diaphragm pump (8) include lid (16) on the diaphragm pump, lid (16) side is connected with the relief valve on the diaphragm pump, the relief valve includes pressure release pipe (17), the inside right side of pressure release pipe (17) is equipped with sealed piece (18), the right side of sealed piece (18) is connected with closing plate (19), the outer end of closing plate (19) is connected with slider (20), the right side cover of pressure release pipe (17) is equipped with sleeve (22), spout (21) have been seted up to the inner wall of sleeve (22), slider (20) fall into the inside of spout (21), be connected with spring (23) between closing plate (19) and sleeve (22), first through-hole (24) have been seted up on sealed piece (18), second through-hole (25) have been seted up on sleeve (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211513022.9A CN115539396A (en) | 2022-11-30 | 2022-11-30 | Novel double-pump combined strong self-priming pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211513022.9A CN115539396A (en) | 2022-11-30 | 2022-11-30 | Novel double-pump combined strong self-priming pump unit |
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| CN115539396A true CN115539396A (en) | 2022-12-30 |
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| CN202211513022.9A Pending CN115539396A (en) | 2022-11-30 | 2022-11-30 | Novel double-pump combined strong self-priming pump unit |
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Citations (7)
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| CN201034080Y (en) * | 2007-01-22 | 2008-03-12 | 沈阳市耐蚀合金泵厂 | Self-controlled turbine vacuum discharging pump |
| CN101162020A (en) * | 2006-10-12 | 2008-04-16 | Itt制造企业公司 | Self priming pump |
| CN202370856U (en) * | 2011-12-09 | 2012-08-08 | 辽宁格瑞特泵业有限公司 | Novel diaphragm type self-sucking pump |
| CN102966556A (en) * | 2012-11-29 | 2013-03-13 | 镇江正汉泵业有限公司 | Explosion-proof high-efficiency powerful self-priming device with explosion-proof water-ring vacuum pump |
| CN103821730A (en) * | 2014-02-26 | 2014-05-28 | 崔正军 | Novel chemical engineering self-priming pump |
| CN209994720U (en) * | 2019-03-21 | 2020-01-24 | 上海新姗机电自动化控制技术中心 | Novel explosion-proof electric actuator |
| CN213870306U (en) * | 2020-12-15 | 2021-08-03 | 辽宁德蒙特科技有限公司 | Electric diaphragm strong self-priming device and explosion-proof strong self-priming pump using same |
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2022
- 2022-11-30 CN CN202211513022.9A patent/CN115539396A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162020A (en) * | 2006-10-12 | 2008-04-16 | Itt制造企业公司 | Self priming pump |
| CN201034080Y (en) * | 2007-01-22 | 2008-03-12 | 沈阳市耐蚀合金泵厂 | Self-controlled turbine vacuum discharging pump |
| CN202370856U (en) * | 2011-12-09 | 2012-08-08 | 辽宁格瑞特泵业有限公司 | Novel diaphragm type self-sucking pump |
| CN102966556A (en) * | 2012-11-29 | 2013-03-13 | 镇江正汉泵业有限公司 | Explosion-proof high-efficiency powerful self-priming device with explosion-proof water-ring vacuum pump |
| CN103821730A (en) * | 2014-02-26 | 2014-05-28 | 崔正军 | Novel chemical engineering self-priming pump |
| CN209994720U (en) * | 2019-03-21 | 2020-01-24 | 上海新姗机电自动化控制技术中心 | Novel explosion-proof electric actuator |
| CN213870306U (en) * | 2020-12-15 | 2021-08-03 | 辽宁德蒙特科技有限公司 | Electric diaphragm strong self-priming device and explosion-proof strong self-priming pump using same |
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