CN114837955A - Slurry pump seal leakage monitoring device - Google Patents
Slurry pump seal leakage monitoring device Download PDFInfo
- Publication number
- CN114837955A CN114837955A CN202210563321.7A CN202210563321A CN114837955A CN 114837955 A CN114837955 A CN 114837955A CN 202210563321 A CN202210563321 A CN 202210563321A CN 114837955 A CN114837955 A CN 114837955A
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- sealing
- ring
- spring
- force sensor
- floating ring
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- 239000002002 slurry Substances 0.000 title claims abstract description 40
- 238000012806 monitoring device Methods 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 77
- 238000012856 packing Methods 0.000 claims abstract description 32
- 238000012544 monitoring process Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 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
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
Abstract
The invention belongs to the technical field of slurry pump sealing, and particularly relates to a slurry pump sealing leakage monitoring device which comprises a sealing component and a monitoring component; the sealing part is arranged between the auxiliary impeller shell and the pump shaft and comprises a floating ring sealing part, a packing sealing part and a labyrinth sealing part; the monitoring component comprises a leakage monitoring assembly and a wear monitoring assembly; compared with the prior art, the invention (1) avoids the leakage of the slurry in the slurry pump through the combination of various sealing components, reduces the corrosion phenomenon at the joint of the pump shaft and other components, and prolongs the service life of the slurry pump; (2) the monitoring component in the slurry pump seal leakage monitoring device comprises a leakage monitoring component and a wear monitoring component; when the liquid leaks to the gasket, the alarm gives a leakage alarm; when the packing seal ring is worn, the alarm gives a wear alarm.
Description
Technical Field
The invention belongs to the technical field of slurry pump sealing, and particularly relates to a slurry pump sealing leakage monitoring device.
Background
The slurry pump is a mechanical device which increases the energy of a solid-liquid mixed medium under the action of centrifugal force (rotation of an impeller of the pump) and converts electric energy into kinetic energy and potential energy of the medium, and is mainly suitable for the fields of mines, power plants, dredging, metallurgy, chemical industry, building materials, petroleum and the like. The power sealing structure of the existing slurry pump is poor in sealing performance, a sealing piece is seriously abraded in work, a liquid ring on the auxiliary impeller can fall onto the pump shaft when the pump shaft stops rotating, slurry is easy to leak, the joint is easy to corrode, the service life is short, and the requirements of the modern society are difficult to meet. Therefore, how to design a slurry pump seal cavity structure and monitor liquid leakage becomes a problem that needs to be solved currently.
CN109281865A proposes an improved method based on a packing sealing structure, which compresses a sealing ring by using the elastic force of the skeleton seal, but is limited by the size of the skeleton seal, and cannot ensure the pressing force for a long time, and does not have a pressing force monitoring device; CN110645182A has proposed a sediment stuff pump seal chamber body structure, utilizes waterproof mechanism to make sediment thick liquid can not flow from the place of connecting pump shaft and pump case connection, avoids connecting the long-time contact moisture of pump shaft and is rusted, but unable real-time supervision liquid leakage.
Disclosure of Invention
Aiming at the problems, the invention provides a slurry pump seal leakage monitoring device.
In order to achieve the purpose, the invention adopts the technical scheme that: a slurry pump seal leakage monitoring device comprises a sealing component and a monitoring component; the slurry pump comprises an auxiliary impeller, a pump shaft, an auxiliary impeller shell and a sealing shell; the sealing shell is arranged on one side, far away from the medium inlet, of the auxiliary impeller shell;
the sealing part is arranged between the auxiliary impeller shell and the pump shaft and comprises a floating ring sealing part, a packing sealing part and a labyrinth sealing part;
the floating ring sealing component comprises a floating ring, a floating ring sealing ring, a spring and a spring seat; the floating ring comprises an annular part and a cylindrical part which are fixedly connected, and an inner cavity step of the floating ring is formed by the contact area of the annular part and the cylindrical part; the cylindrical part of the floating ring is provided with a conical structure, and the outer diameter of one end of the cylindrical part, which is far away from the annular part, is the largest;
a labyrinth seal part is arranged between the annular part and the auxiliary impeller; a packing sealing component is arranged between the cylindrical part and the auxiliary impeller shell;
the floating ring is sleeved on the periphery of the pump shaft, the spring seat is mounted on the pump shaft through a set screw, the right end of the spring is in contact with the spring seat, and the left end of the spring is fixedly connected with an inner cavity step of the floating ring; the floating ring sealing ring is arranged between the inner ring of the annular part of the floating ring and the pump shaft;
the monitoring component comprises a leakage monitoring assembly and a wear monitoring assembly; the leakage monitoring assembly is arranged on the inner ring of the sealing shell and comprises a signal wire I, an alarm, a gasket force sensor and a gasket, the gasket is arranged in a groove of the inner ring of the sealing shell and can expand after imbibing liquid, and the gasket is axially positioned by a flange plate arranged in the sealing shell; the gasket force sensor is mounted between the gasket and the seal housing; the flange plate is provided with a through hole, and the through hole is used for a signal line to pass through; one end of the signal wire is connected with the gasket force sensor, and the other end of the signal wire is connected with the alarm;
the wear monitoring assembly comprises a second signal wire, an alarm and a spring force sensor, and the spring force sensor is arranged between the spring seat and the end part of the spring close to the spring seat and is extruded by the spring; one end of the signal wire II is connected with the spring force sensor, and the other end of the signal wire II is connected with the alarm.
Preferably, a plurality of staggered bosses are fixedly arranged on the annular part of the floating ring close to the end face of the auxiliary impeller; a plurality of grooves are formed in the positions, corresponding to the bosses of the floating ring, of the auxiliary impeller, and the bosses and the grooves are matched to form a labyrinth seal part together.
Preferably, the packing sealing component comprises a compression bolt, a compression cover and a packing sealing ring, and the packing sealing ring is arranged between the cylindrical part of the floating ring and the auxiliary impeller shell; the compressing cover is arranged on the auxiliary impeller shell through a compressing bolt and compresses the packing seal ring.
Preferably, the packing sealing component further comprises a water seal ring, the water seal ring is installed in the packing sealing ring, and the auxiliary impeller shell is provided with a liquid injection port leading to the water seal ring.
Preferably, the height of the groove in the longitudinal section of the labyrinth seal member is three times the height of the boss.
Preferably, the angle of inclination of the conical structure in a longitudinal cross-section of the cylindrical portion of said floating ring is between 2 ° and 3 °.
Preferably, the gasket force sensor and the spring force sensor are both strain gauge type pressure sensors.
Preferably, the gasket is made of water-absorbent resin.
Preferably, the spring force sensor is annular or cylindrical, and the end face, far away from the spring seat, of the spring force sensor is fixedly connected with the end part of the spring; the spring seat is provided with a groove at a position corresponding to the spring force sensor, and the periphery of the spring force sensor is connected with the groove of the spring seat in a sliding manner.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) the sealing part in the slurry pump sealing leakage monitoring device comprises a floating ring sealing part, a packing sealing part and a labyrinth sealing part; the leakage of the slurry in the slurry pump is avoided through the combination of various sealing components, the corrosion phenomenon at the joint of the pump shaft and other components is reduced, and the service life of the slurry pump is prolonged;
(2) the monitoring component in the slurry pump seal leakage monitoring device comprises a leakage monitoring component and a wear monitoring component; when liquid leaks to the gasket, the gasket absorbs liquid and expands, and presses the gasket force sensor, the gasket force sensor monitors pressure, signals are transmitted to the alarm through the first signal line, and when the pressure value exceeds a rated value, the alarm gives out a leakage alarm; the spring force sensor monitors the pressure of the spring in real time, when the packing seal ring is worn, the floating ring moves left, the pressure of the spring on the spring force sensor is reduced, a signal is transmitted to the alarm through the second signal wire, and the alarm gives out a wear alarm.
Drawings
In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings used in the description of the embodiment will be briefly introduced below, and fig. 1 is a schematic view of a slurry pump seal leakage monitoring device in cooperation with a slurry pump;
FIG. 2 is a schematic view of a sealing component and a monitoring component in the slurry pump seal leakage monitoring device;
FIG. 3 is a schematic view of part A of a slurry pump seal leakage monitoring device;
fig. 4 is a schematic view of the part B of the slurry pump seal leakage monitoring device.
Description of reference numerals:
1-auxiliary impeller, 1.1-groove;
2-auxiliary impeller shell, 2.1-liquid injection port;
3-shell bolt, 4-sealed shell, 5-compression bolt, 6-compression cover;
7-signal line, 71-signal line one, 72-signal line two;
8-alarm, 9-screw, 10-gasket force sensor, 11-gasket, 12-flange, 13-set screw, 14-spring seat, 15-spring force sensor, 16-spring, 17-packing sealing ring, 18-water seal ring, 19-floating ring sealing ring;
20-floating ring, 20.1-boss, 20.2-conical structure;
21-medium inlet, 22-medium outlet, 23-impeller, 24-speed reducer, 25-pump shaft.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples.
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 present invention is not limited to the specific embodiments of the present disclosure.
Example 1
The invention is further described with reference to fig. 1-4, and a slurry pump seal leakage monitoring device, as shown in fig. 1, comprises a sealing component and a monitoring component; the slurry pump comprises an auxiliary impeller 1, a pump shaft 25, an auxiliary impeller shell 2 and a sealing shell 4; the seal housing 4 is mounted on the side of the expeller housing 2 remote from the medium inlet 21. The sealing part is arranged between the auxiliary impeller shell 2 and the pump shaft 25 and comprises a floating ring sealing part, a packing sealing part and a labyrinth sealing part.
As shown in fig. 2 and 3, the floating ring sealing component comprises a floating ring 20, a floating ring sealing ring 19, a spring 16 and a spring seat 14; the floating ring 20 comprises a fixedly connected annular part and a cylindrical part, and an inner cavity step of the floating ring 20 is formed by the contact area of the annular part and the cylindrical part; the cylindrical portion of the floating ring 20 has a conical configuration 20.2 and the outer diameter of the end of the cylindrical portion remote from the annular portion is greatest.
As shown in fig. 2 and 3, a labyrinth seal member is provided between the annular portion and the sub-impeller 1; a packing seal member is provided between the cylindrical portion and the sub-impeller housing 2.
As shown in fig. 1 and 2, the floating ring 20 is sleeved on the periphery of the pump shaft 25, the spring seat 14 is mounted on the pump shaft 25 through the set screw 13, the right end of the spring 16 is in contact with the spring seat 14, and the left end of the spring 16 is fixedly connected with the step of the inner cavity of the floating ring 20; a floating ring sealing ring 19 is arranged between the inner ring of the annular part of the floating ring 20 and the pump shaft 25.
As shown in fig. 2 and 4, the monitoring components include a leakage monitoring assembly and a wear monitoring assembly; the leakage monitoring assembly is arranged on the inner ring of the sealing shell 4 and comprises a first signal wire 71, an alarm 8, a gasket force sensor 10 and a gasket 11, the gasket 11 is arranged in a groove of the inner ring of the sealing shell 4 and can expand after imbibing liquid, and the gasket 11 is axially positioned by a flange plate 12 arranged in the sealing shell 4; the gasket force sensor 10 is mounted between the gasket 11 and the seal housing 4; a through hole is formed in the flange plate 12 and used for a first signal wire 71 to pass through; the first signal wire 71 is connected to the washer force sensor 10 at one end and the alarm 8 at the other end.
As shown in fig. 2 and 4, the wear monitoring assembly includes a second signal wire 72, an alarm 8, and a spring force sensor 15, the spring force sensor 15 being installed between the spring seat 14 and an end portion of the spring 16 adjacent to the spring seat 14 and being pressed by the spring 16; one end of the second signal wire 72 is connected with the spring force sensor 15, and the other end is connected with the alarm 8.
As shown in fig. 2 and 3, a plurality of staggered bosses 20.1 are fixedly arranged on the annular part of the floating ring 20 close to the end face of the auxiliary impeller 1; a plurality of grooves 1.1 are formed in the positions, corresponding to the bosses 20.1 of the floating ring 20, of the auxiliary impeller 1, and the bosses 20.1 and the grooves 1.1 are matched to form a labyrinth seal part together.
As shown in fig. 2, the packing seal member includes a pressing bolt 5, a pressing cap 6, and a packing seal ring 17, and the packing seal ring 17 is installed between the cylindrical portion of the floating ring 20 and the sub-impeller housing 2; the pressing cover 6 is installed on the auxiliary impeller shell 2 through a pressing bolt 5 and presses the packing seal ring 17.
As shown in fig. 2 and 3, the packing seal component further comprises a water seal ring 18, the water seal ring 18 is installed in the packing seal ring 17, and the auxiliary impeller shell 2 is provided with a liquid injection port 2.1 leading to the water seal ring 18.
As shown in fig. 3, the height of the groove 1.1 in the longitudinal section of the labyrinth seal part is three times the height of the boss 20.1.
The angle of inclination of the conical formation 20.2 in the longitudinal cross-section of the cylindrical portion of the floating ring 20 is 2.
The washer force sensor 10 and the spring force sensor 15 are both strain gauge pressure sensors.
The gasket 11 is made of water-absorbent resin.
As shown in fig. 2, the spring force sensor 15 is annular or cylindrical, and the end surface of the spring force sensor 15 far away from the spring seat 14 is fixedly connected with the end of the spring 16; the spring seat 14 is provided with a groove at a position corresponding to the spring force sensor 15, and the periphery of the spring force sensor 15 is in sliding connection with the groove of the spring seat 14.
Example 2
The difference between this example and example 1 is: the taper structure 20.2 has an inclination angle of 3 DEG in the longitudinal cross section of the cylindrical portion of the floating ring 20
The working principle of the slurry pump seal leakage monitoring device is as follows: the liquid passing through the auxiliary impeller 1 is prevented from further leaking by a labyrinth sealing part consisting of the boss 20.1 and the groove 1.1 and the floating ring sealing ring 19; the position of the floating ring 20 is adjusted by the spring 16, and the packing seal ring 17 is pressed by the conical structure 20.2 of the cylindrical part of the floating ring and the pressing cover 6, so that the liquid passing through the auxiliary impeller 1 is prevented from further leaking; when liquid leaks to the gasket 11, the gasket 11 absorbs liquid to expand and presses the gasket force sensor 10, the gasket force sensor 10 monitors pressure, signals are transmitted to the alarm 8 through a signal line I71, and when the pressure value exceeds a rated value, the alarm 8 gives out a leakage alarm; the spring force sensor 15 monitors the pressure of the spring 16 in real time, when the packing seal ring 17 is worn, the floating ring 20 moves leftwards, the pressure of the spring 16 on the spring force sensor 15 is reduced, a signal is transmitted to the alarm 8 through the second signal wire 72, and the alarm 8 gives out a wear alarm.
The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above embodiments with modifications and variations to the disclosed technical content to apply the equivalent embodiments in other fields, but any simple modification and equivalent variation made on the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. A slurry pump seal leakage monitoring device comprises a sealing component and a monitoring component; the slurry pump comprises an auxiliary impeller (1), a pump shaft (25), an auxiliary impeller shell (2) and a sealing shell (4); the sealing shell (4) is arranged on one side, far away from the medium inlet (21), of the auxiliary impeller shell (2); the method is characterized in that:
the sealing part is arranged between the auxiliary impeller shell (2) and the pump shaft (25), and comprises a floating ring sealing part, a packing sealing part and a labyrinth sealing part;
the floating ring sealing component comprises a floating ring (20), a floating ring sealing ring (19), a spring (16) and a spring seat (14); the floating ring (20) comprises an annular part and a cylindrical part which are fixedly connected, and an inner cavity step of the floating ring (20) is formed by the contact area of the annular part and the cylindrical part; the cylindrical part of the floating ring (20) is provided with a conical structure (20.2) and the outer diameter of one end of the cylindrical part far away from the annular part is the largest;
a labyrinth seal part is arranged between the annular part and the auxiliary impeller (1); a packing seal component is arranged between the cylindrical part and the auxiliary impeller shell (2);
the floating ring (20) is sleeved on the periphery of a pump shaft (25), the spring seat (14) is installed on the pump shaft (25) through a set screw (13), the right end of the spring (16) is in contact with the spring seat (14), and the left end of the spring (16) is fixedly connected with an inner cavity step of the floating ring (20); the floating ring sealing ring (19) is arranged between the inner ring of the annular part of the floating ring (20) and the pump shaft (25);
the monitoring component comprises a leakage monitoring assembly and a wear monitoring assembly; the leakage monitoring assembly is arranged on the inner ring of the sealing shell (4) and comprises a signal line I (71), an alarm (8), a gasket force sensor (10) and a gasket (11), the gasket (11) is arranged in a groove of the inner ring of the sealing shell (4) and can expand after imbibing, and the gasket (11) is axially positioned by a flange plate (12) arranged in the sealing shell (4); the gasket force sensor (10) is arranged between the gasket (11) and the sealing shell (4); the flange plate (12) is provided with a through hole, and the through hole is used for a signal line I (71) to pass through; one end of the signal wire I (71) is connected with the gasket force sensor (10), and the other end of the signal wire I is connected with the alarm (8);
the wear monitoring assembly comprises a second signal wire (72), an alarm (8) and a spring force sensor (15), wherein the spring force sensor (15) is installed between the spring seat (14) and the end part, close to the spring seat (14), of the spring (16) and is extruded by the spring (16); one end of the second signal wire (72) is connected with the spring force sensor (15), and the other end of the second signal wire is connected with the alarm (8).
2. The slurry pump seal leakage monitoring device of claim 1, wherein: a plurality of staggered bosses (20.1) are fixedly arranged on the annular part of the floating ring (20) close to the end face of the auxiliary impeller (1); a plurality of grooves (1.1) are formed in the positions, corresponding to the bosses (20.1) of the floating ring (20), of the auxiliary impeller (1), and the bosses (20.1) and the grooves (1.1) are matched to form a labyrinth seal part together.
3. The slurry pump seal leakage monitoring device according to claim 1 or 2, wherein: the packing sealing component comprises a compression bolt (5), a compression cover (6) and a packing sealing ring (17), and the packing sealing ring (17) is arranged between the cylindrical part of the floating ring (20) and the auxiliary impeller shell (2); the pressing cover (6) is installed on the auxiliary impeller shell (2) through a pressing bolt (5) and presses the packing sealing ring (17).
4. The slurry pump seal leakage monitoring device of claim 3, wherein: the packing sealing component further comprises a water seal ring (18), the water seal ring (18) is installed in the packing sealing ring (17), and the auxiliary impeller shell (2) is provided with a liquid injection port (2.1) leading to the water seal ring (18).
5. The slurry pump seal leakage monitoring device of claim 2, wherein: the height of the groove (1.1) in the longitudinal section of the labyrinth seal part is three times of the height of the boss (20.1).
6. The slurry pump seal leakage monitoring device of claim 1, wherein: the inclination angle of the conical structure (20.2) in the longitudinal section of the cylindrical part of the floating ring (20) is 2-3 degrees.
7. The slurry pump seal leakage monitoring device of claim 1, wherein: the gasket force sensor (10) and the spring force sensor (15) are both strain gauge type pressure sensors.
8. The slurry pump seal leakage monitoring device of claim 1, wherein: the gasket (11) is made of water-absorbent resin.
9. The slurry pump seal leakage monitoring device of claim 7, wherein: the spring force sensor (15) is annular or cylindrical, and the end face, far away from the spring seat (14), of the spring force sensor (15) is fixedly connected with the end part of the spring (16); the spring seat (14) is provided with a groove at a position corresponding to the spring force sensor (15), and the periphery of the spring force sensor (15) is in sliding connection with the groove of the spring seat (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210563321.7A CN114837955B (en) | 2022-05-23 | 2022-05-23 | Slurry pump sealing leakage monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210563321.7A CN114837955B (en) | 2022-05-23 | 2022-05-23 | Slurry pump sealing leakage monitoring device |
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| CN114837955A true CN114837955A (en) | 2022-08-02 |
| CN114837955B CN114837955B (en) | 2023-12-05 |
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| CN202210563321.7A Active CN114837955B (en) | 2022-05-23 | 2022-05-23 | Slurry pump sealing leakage monitoring device |
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