CN208816330U - A kind of water-ring vacuum pump - Google Patents
A kind of water-ring vacuum pump Download PDFInfo
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- CN208816330U CN208816330U CN201821615524.1U CN201821615524U CN208816330U CN 208816330 U CN208816330 U CN 208816330U CN 201821615524 U CN201821615524 U CN 201821615524U CN 208816330 U CN208816330 U CN 208816330U
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- water
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- vacuum pump
- ring vacuum
- pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000000523 sample Substances 0.000 claims abstract description 37
- 230000001939 inductive effect Effects 0.000 claims abstract description 33
- 239000012224 working solution Substances 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000006698 induction Effects 0.000 claims abstract description 11
- 230000036413 temperature sense Effects 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 21
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model discloses a kind of water-ring vacuum pump, including pump cover, distribution plate, air entry and exhaust outlet, it is provided with air entry and exhaust outlet on pump cover, pump cover is connect with distribution plate, and suction hole and gas vent are formed on distribution plate；Further include: the pump housing being connect with distribution plate, and it is set to the intracorporal pump shaft of pump and impeller, impeller set is provided with working solution control device and induction detection device on pump shaft on the pump housing；Wherein, the pump housing is double-layer structure, and the inner and outer wall including annular, inner and outer wall is formed with accommodating chamber.The utility model unique design double-layer structure pump housing, and it is hydraulically full in the accommodating chamber of double-layer structure, by temperature sense probe working solution temperature is detected, and inputted in accommodating chamber by hot and cold water and the temperature of working solution is adjusted；It is detected by liquid level of the liquid level inductive probe to working solution, and liquid level is adjusted at any time by inlet and outlet, improved work efficiency.
Description
Technical field
The utility model relates to technical field of vacuum equipment, more particularly to a kind of water-ring vacuum pump.
Background technique
Currently, water-ring vacuum pump is widely used in the every field such as medical treatment, industry, food, chemistry, especially curing
Power in terms for the treatment of field, for operating room and the attraction of the central negative pressure in each ward.Since it is with small in size, low noise excellent
Point, is increasingly widely used.
But water-ring vacuum pump remains the problem of low efficiency, in addition to the relationship of its own structure, working solution
Temperature and liquid level also have a great impact.Although theoretically, water-ring vacuum pump belongs to normal temperature compressed, since machinery is transported
Dynamic and outside air factor, can equally impact the temperature of working solution, if water temperature over-high, will lead to vapour pressure in the pump housing
The abruptly increase of power not can guarantee effective sucking rate.In terms of liquid level, liquid level is too high, be easy to cause pump core drainage jam, and enters
After working condition, the gaseous mixture being drawn into can coagulate phenomenon, cause water body liquid level to rise, cause liquid-ring type vacuum
The reduction of the working efficiency of pump.
Therefore, how to provide that a kind of working solution temperature, liquid level are controllable, and the water-ring vacuum pump that work efficiency is high is this field
The problem of technical staff's urgent need to resolve.
Utility model content
In view of this, the present invention provides a kind of water-ring vacuum pump, the temperature and liquid level to working solution are realized
Control, improve working efficiency, save space.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of water-ring vacuum pump, including pump cover, distribution plate, air entry and exhaust outlet are provided on the pump cover described
Air entry and the exhaust outlet, the pump cover are connect with the distribution plate, are formed with suction hole and gas vent on the distribution plate；
Further include: the pump housing being connect with the distribution plate, and it is set to the intracorporal pump shaft of the pump and impeller, the impeller set are mounted in
On the pump shaft, working solution control device and induction detection device are provided on the pump housing；
Wherein, the pump housing is double-layer structure, and the inner and outer wall including annular, the inner wall and the outer wall are formed with
Accommodating chamber offers inlet opening at the top of the inner wall, and the bottom of the inner wall offers apopore；
The working solution control device includes the cold water pipe, hot water pipe and outlet pipe being connected to the outer wall, further includes using
In the piston rod two for the piston rod one and apopore opening and closing for controlling the inlet opening opening and closing；The cold water pipe, the warm water
Pipe and the outlet pipe are respectively arranged with cold valves, water-heating valve and outlet valve, and the piston rod one and the piston rod two are distinguished
It is connected with drive cylinder one and drive cylinder two；
The induction detection device includes that the inner wall temperature inductive probe for being set to the inner wall and water level induction are visited
Head, and it is set to the outside wall temperature inductive probe of the inside outer wall, the inner wall temperature inductive probe, the outside wall temperature
Inductive probe and the water level inductive probe are connect with detection control unit, and the detection control unit is separately connected described cold
Water valve, the water-heating valve, the outlet valve, the drive cylinder one and the drive cylinder two.
Through the above technical solutions, the utility model unique design double-layer structure pump housing, and in the receiving of double-layer structure
It is intracavitary hydraulically full, working solution temperature is detected by temperature sense probe, and by right in hot and cold water input accommodating chamber
The temperature of working solution is adjusted, and can completely cut off working solution and external environment, keeps the operation is stable of working solution；Pass through liquid level
Inductive probe detects the liquid level of working solution, and is adjusted at any time to liquid level by inlet and outlet, realizes
Control to working solution temperature and liquid level, improves work efficiency.
Preferably, in a kind of above-mentioned water-ring vacuum pump, the piston rod one includes piston one and drive rod one, described
Piston one is adapted to the inlet opening, and the drive rod one connect with the piston one and passes through the outer wall and the driving
Oil cylinder one connects.It is controlled by drive cylinder a pair of pistons bar one, realizes the opening and closing to inlet opening, control is stablized and precision
It is high.
Preferably, in a kind of above-mentioned water-ring vacuum pump, the piston rod two includes piston two and drive rod two, described
Piston two is adapted to the apopore, and the drive rod two connect with the piston two and passes through the outer wall and the driving
Oil cylinder two connects.Piston rod two is controlled by drive cylinder two, realizes the opening and closing to apopore, control is stablized and precision
It is high.
Preferably, it in a kind of above-mentioned water-ring vacuum pump, is additionally provided between the exhaust outlet and the gas vent soft
Property exhaust apparatus, the flexibility exhaust apparatus includes flexible valve plate, is formed and is led between the flexibility valve plate and the distribution plate
The exhaust passage of the exhaust outlet, the flexibility valve plate are equipped with only upper end and the flexible valve towards the side of the distribution plate
Plate is fixed and rest part is the flexible strip of free shape, and the flexibility valve plate middle position opens up logical on the inside of the oriented flexible strip
Enter the adjusting stomata of ambient atmosphere.By the flexible strip on flexible valve plate by the gas pressure of different directions, formed adjustable
Flexible exhaust outlet can automatically adjust the row of vacuum pump using pressure balance principle according to by different vacuum locating in pumping system
Air horn degree realizes the efficient operation of vacuum pump so as to which internal system is extracted into reservation vacuum state with the shortest time.
Preferably, in a kind of above-mentioned water-ring vacuum pump, the flexibility valve plate passes through adjustable bolt and the distribution
Plate connection.Convenient for adjusting exhaust passage width size, different application environments is adapted to.
Preferably, in a kind of above-mentioned water-ring vacuum pump, the input power input terminal of the pump shaft and the motor
Power output end connection.Since the revolution of water-ring vacuum pump is higher, without deceleration device, therefore can be realized with motor direct connection
With small structure size, big capacity is obtained, saves occupied area.
Preferably, in a kind of above-mentioned water-ring vacuum pump, the quantity of the inner wall temperature inductive probe is no less than 2,
And it is uniformly distributed in the inner wall.The accuracy for improving detection is detected by multiple temperature sense probes.
Preferably, in a kind of above-mentioned water-ring vacuum pump, the quantity of the outside wall temperature inductive probe is no less than 2,
And it is uniformly distributed in the inside outer wall.The accuracy for improving detection is detected by multiple temperature sense probes.
Preferably, in a kind of above-mentioned water-ring vacuum pump, the water level inductive probe is set to the inner wall, and
It is concordant with the normal water level of the water-ring vacuum pump.Water level inductive probe can accurately detect whether water level is above standard
Water level is lower than normal water level, realizes the accurate detection to water level.
It can be seen via above technical scheme that compared with prior art, the utility model, which discloses, provides a kind of liquid-ring type
Vacuum pump has the advantages that
1, the utility model unique design double-layer structure pump housing, and it is hydraulically full in the accommodating chamber of double-layer structure, lead to
Excess temperature inductive probe detects working solution temperature, and is inputted in accommodating chamber by hot and cold water and carried out to the temperature of working solution
It adjusts, and working solution and external environment can be completely cut off, keep the operation is stable of working solution；By liquid level inductive probe to working solution
Liquid level detected, and liquid level is adjusted at any time by inlet and outlet, is realized to working solution temperature and liquid
The control of position, improves work efficiency.
2, by flexible exhaust apparatus, can according to by different vacuum locating in pumping system, using pressure balance principle, from
The dynamic exhaust angle for adjusting vacuum pump realizes vacuum pump so as to which internal system is extracted into reservation vacuum state with the shortest time
Efficient operation.
3, using coaxial direct-connected design, occupied area is saved, and run smoothly, reduces noise.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 attached drawing is structural schematic diagram provided by the utility model；
Fig. 2 attached drawing is the connection schematic diagram of induction detection device provided by the utility model；
Fig. 3 attached drawing is the outside schematic diagram of the pump housing provided by the utility model；
Fig. 4 attached drawing is the structural schematic diagram of flexible exhaust apparatus provided by the utility model；
Fig. 5 attached drawing is the structural schematic diagram of piston rod one provided by the utility model；
Fig. 6 attached drawing is the structural schematic diagram of piston rod two provided by the utility model.
Wherein:
1 is pump cover, and 2 be distribution plate, and 3 be air entry, and 4 be exhaust outlet, and 5 be suction hole, and 6 be gas vent, and 7 be the pump housing, and 8 are
Pump shaft, 9 be impeller, and 10 be working solution control device, and 11 be inner wall, and 12 be outer wall, and 13 be accommodating chamber, and 14 be inlet opening, and 15 are
Apopore, 16 be cold water pipe, and 17 be hot water pipe, and 18 be outlet pipe, and 19 be piston rod one, and 20 be piston rod two, and 21 be interior wall temperature
Inductive probe is spent, 22 be water level inductive probe, and 23 be outside wall temperature inductive probe, and 24 be detection control unit, and 25 be cold valves,
26 be water-heating valve, and 27 be outlet valve, and 28 be drive cylinder one, and 29 be drive cylinder two, and 30 be piston one, and 31 be drive rod one,
32 be piston two, and 33 be drive rod two, and 34 be flexible exhaust apparatus, and 35 be flexible valve plate, and 36 be exhaust passage, and 37 be flexibility
Item, 38 is adjust stomata, and 39 be adjustable bolt.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to attached drawing 1 to attached drawing 6, the utility model embodiment discloses a kind of water-ring vacuum pump, including pump cover 1, point
Matching board 2, air entry 3 and exhaust outlet 4 are provided with air entry 3 and exhaust outlet 4 on pump cover 1, and pump cover 1 is connect with distribution plate 2, distribution
Suction hole 5 and gas vent 6 are formed on plate 2；Further include: the pump housing 7 being connect with distribution plate 2, and the pump being set in the pump housing 7
Axis 8 and impeller 9, impeller 9 are sleeved on pump shaft 8, and working solution control device 10 and induction detection device are provided on the pump housing 7；
Wherein, the pump housing 7 is double-layer structure, and inner wall 11 and outer wall 12 including annular, inner wall 11 and outer wall 12 are formed with appearance
Receive chamber 13, the top of inner wall 11 offers inlet opening 14, and the bottom of inner wall 11 offers apopore 15；
Working solution control device 10 includes the cold water pipe 16, hot water pipe 17 and outlet pipe 18 being connected to outer wall 12, further includes
The piston rod 2 20 that piston rod 1 and apopore 15 for controlling the opening and closing of inlet opening 14 are opened and closed；Cold water pipe 16, hot water pipe 17
It is respectively arranged with cold valves 25, water-heating valve 26 and outlet valve 27 with outlet pipe 18, piston rod 1 and piston rod 2 20 connect respectively
It is connected to drive cylinder 1 and drive cylinder 2 29；
Induction detection device includes the inner wall temperature inductive probe 21 and water level inductive probe 22 for being set to 11 inside of inner wall,
And it is set to the outside wall temperature inductive probe 23 of 12 inside of outer wall, inner wall temperature inductive probe 21, outside wall temperature inductive probe
23 and water level inductive probe 22 connect with detection control unit 24, detection control unit 24 is separately connected cold valves 25, warm water
Valve 26, outlet valve 27, drive cylinder 1 and drive cylinder 2 29.
It should be noted that the utility model improves on the basis of traditional water-ring vacuum pump, have traditional
The parts such as the pedestal of water-ring vacuum pump, the seal gasket for sealing, mechanical seal, since above-mentioned part is not that this is practical new
The emphasis of type, details are not described herein.
In order to further optimize the above technical scheme, piston rod 1 includes piston 1 and drive rod 1, piston one
30 are adapted to inlet opening 14, and drive rod 1 connect with piston 1 and passes through outer wall 12 and connect with drive cylinder 1.
The position that drive rod 1 is contacted with outer wall 12 is provided with the sealing ring for preventing leak.
In order to further optimize the above technical scheme, piston rod 2 20 includes piston 2 32 and drive rod 2 33, piston two
32 are adapted to apopore 15, and drive rod 2 33 connect with piston 2 32 and passes through outer wall 12 and connect with drive cylinder 2 29.
The position that drive rod 2 33 is contacted with outer wall 12 is provided with the sealing ring for preventing leak.
In order to further optimize the above technical scheme, flexible exhaust apparatus is additionally provided between exhaust outlet 4 and gas vent 6
34, flexible exhaust apparatus 34 includes flexible valve plate 35, and the exhaust for leading to exhaust outlet 4 is formed between flexible valve plate 35 and distribution plate 2
Channel, flexible valve plate 35 is fixed equipped with only upper end and flexible valve plate 35 towards the side of distribution plate 2 and rest part is free
The flexible strip 37 of shape, flexible 35 middle position of valve plate open up the adjusting stomata 38 that ambient atmosphere is passed through on the inside of oriented flexible strip 37.
It is in compression ratio hour in water-ring vacuum pump, that is, the pressure at expulsion pumped is greater than external atmospheric pressure, i.e., by dividing
The gas pressure that gas vent 6 on matching board 2 enters in exhaust passage 36, which is greater than, enters flexible strip 37 by adjusting stomata 38
The atmospheric pressure of inside, the most of gas being discharged by water-ring vacuum pump of flexible strip 37 forces to submit in flexible 35 face of valve plate at this time
On, so that 36 aperture of exhaust passage becomes larger；And when pressure at expulsion is less than ambient atmosphere, that is, pass through the gas vent 6 on distribution plate 2
The atmosphere entered in exhaust passage 36 blows afloat and is detached from flexible 35 surface of valve plate and covers 6 major part of the gas vent of distribution plate 2
It covers, so that 36 aperture of exhaust passage becomes smaller.
In order to further optimize the above technical scheme, flexible valve plate 35 is connect by adjustable bolt 39 with distribution plate 2.
It in order to further optimize the above technical scheme, further include that the motor of power, the input power input terminal of pump shaft 8 are provided
It is connect with the power output end of motor.
In order to further optimize the above technical scheme, the quantity of inner wall temperature inductive probe 21 is no less than 2, and uniformly divides
It is distributed in 11 inside of inner wall.
In order to further optimize the above technical scheme, the quantity of outside wall temperature inductive probe 23 is no less than 2, and uniformly divides
It is distributed in 12 inside of outer wall.
In order to further optimize the above technical scheme, water level inductive probe 22 is set to 11 inside of inner wall, and and liquid-ring type
The normal water level of vacuum pump is concordant.
The working principle of the utility model are as follows: liquid is injected by cold water pipe 16 or hot water pipe 17 in accommodating chamber 13, when interior
When wall temperature inductive probe 21 detects water temperature not in critical field, i.e., water temperature is carried out by cold water pipe 16 or hot water pipe 17
It adjusts, and water temperature is detected in conjunction with inner wall temperature inductive probe 21 by outside wall temperature inductive probe 23, until restoring temperature
Stop after degree, the liquid in accommodating chamber 13 is isolated by working solution with external environment, guarantees that temperature is stablized.
When water-ring vacuum pump stops working, 22 establishing criteria water level of water level inductive probe is detected, when water level is low
When, inlet opening 14 is opened, and the liquid in accommodating chamber 13 injects supplement；When water level is high, the liquid in accommodating chamber 13 passes through water outlet
Pipe 18 is discharged, and apopore 15 is opened, and working solution discharge after normal water level until stop.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (9)
1. a kind of water-ring vacuum pump, including pump cover (1), distribution plate (2), air entry (3) and exhaust outlet (4), the pump cover (1)
On be provided with the air entry (3) and the exhaust outlet (4), the pump cover (1) connect with the distribution plate (2), the distribution
Suction hole (5) and gas vent (6) are formed on plate (2)；It is characterized by further comprising: the pump housing being connect with the distribution plate (2)
(7), and the pump shaft (8) and impeller (9) that are set in the pump housing (7), the impeller (9) are sleeved on the pump shaft (8),
Working solution control device (10) and induction detection device are provided on the pump housing (7)；
Wherein, the pump housing (7) is double-layer structure, inner wall (11) and outer wall (12) including annular, the inner wall (11) and institute
It states outer wall (12) to be formed with accommodating chamber (13), be offered inlet opening (14) at the top of the inner wall (11), the inner wall (11)
Bottom offers apopore (15)；
The working solution control device (10) includes the cold water pipe (16) being connected to the outer wall (12), hot water pipe (17) and water outlet
It manages (18), further includes the work of the piston rod one (19) for controlling the inlet opening (14) opening and closing and the apopore (15) opening and closing
Stopper rod two (20)；The cold water pipe (16), the hot water pipe (17) and the outlet pipe (18) be respectively arranged with cold valves (25),
Water-heating valve (26) and outlet valve (27), the piston rod one (19) and the piston rod two (20) are connected separately with drive cylinder one
(28) and drive cylinder two (29)；
The induction detection device includes inner wall temperature inductive probe (21) and the water level sense being set on the inside of the inner wall (11)
Should pop one's head in (22), and be set to the outside wall temperature inductive probe (23) on the inside of the outer wall (12), the inner wall temperature induction
It pops one's head in (21), the outside wall temperature inductive probe (23) and the water level inductive probe (22) connect with detection control unit (24)
Connect, the detection control unit (24) be separately connected the cold valves (25), the water-heating valve (26), the outlet valve (27),
The drive cylinder one (28) and the drive cylinder two (29).
2. a kind of water-ring vacuum pump according to claim 1, which is characterized in that the piston rod one (19) includes piston
One (30) and drive rod one (31), the piston one (30) are adapted to the inlet opening (14), the drive rod one (31) and institute
It states piston one (30) connection and passes through the outer wall (12) and connect with the drive cylinder one (28).
3. a kind of water-ring vacuum pump according to claim 1, which is characterized in that the piston rod two (20) includes piston
Two (32) and drive rod two (33), the piston two (32) are adapted to the apopore (15), the drive rod two (33) and institute
It states piston two (32) connection and passes through the outer wall (12) and connect with the drive cylinder two (29).
4. a kind of water-ring vacuum pump according to claim 1, which is characterized in that the exhaust outlet (4) and the exhaust
It is additionally provided between hole (6) flexible exhaust apparatus (34), the flexibility exhaust apparatus (34) includes flexible valve plate (35), described soft
Property valve plate (35) and the distribution plate (2) between formed and lead to the exhaust passages of the exhaust outlet (4), the flexibility valve plate (35)
Only upper end is equipped with towards the side of the distribution plate (2) and the flexible valve plate (35) is fixed and rest part is free shape
Flexible strip (37), described flexibility valve plate (35) middle position open up the tune that ambient atmosphere is passed through on the inside of the oriented flexible strip (37)
Solar term hole (38).
5. a kind of water-ring vacuum pump according to claim 4, which is characterized in that the flexibility valve plate (35) passes through adjustable
Section bolt (39) is connect with the distribution plate (2).
6. a kind of water-ring vacuum pump according to claim 1, which is characterized in that further include providing the motor of power, institute
The input power input terminal for stating pump shaft (8) is connect with the power output end of the motor.
7. a kind of water-ring vacuum pump according to claim 1 to 6, which is characterized in that the inner wall temperature sense
The quantity of (21) of should popping one's head in is no less than 2, and is uniformly distributed on the inside of the inner wall (11).
8. a kind of water-ring vacuum pump according to claim 1 to 6, which is characterized in that the outside wall temperature sense
The quantity of (23) of should popping one's head in is no less than 2, and is uniformly distributed on the inside of the outer wall (12).
9. a kind of water-ring vacuum pump according to claim 1 to 6, which is characterized in that the water level induction is visited
Head (22) is set on the inside of the inner wall (11), and concordant with the normal water level of the water-ring vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821615524.1U CN208816330U (en) | 2018-09-30 | 2018-09-30 | A kind of water-ring vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821615524.1U CN208816330U (en) | 2018-09-30 | 2018-09-30 | A kind of water-ring vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208816330U true CN208816330U (en) | 2019-05-03 |
Family
ID=66279137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821615524.1U Withdrawn - After Issue CN208816330U (en) | 2018-09-30 | 2018-09-30 | A kind of water-ring vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208816330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980042A (en) * | 2018-09-30 | 2018-12-11 | 山东康诚医用设备工程有限公司 | A kind of water-ring vacuum pump |
-
2018
- 2018-09-30 CN CN201821615524.1U patent/CN208816330U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980042A (en) * | 2018-09-30 | 2018-12-11 | 山东康诚医用设备工程有限公司 | A kind of water-ring vacuum pump |
| CN108980042B (en) * | 2018-09-30 | 2024-05-07 | 山东康诚医用设备工程有限公司 | Water ring type vacuum pump |
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