CN112012934A - Automatic stirring sewage pump - Google Patents
Automatic stirring sewage pump Download PDFInfo
- Publication number
- CN112012934A CN112012934A CN201910473392.6A CN201910473392A CN112012934A CN 112012934 A CN112012934 A CN 112012934A CN 201910473392 A CN201910473392 A CN 201910473392A CN 112012934 A CN112012934 A CN 112012934A
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- Prior art keywords
- impeller
- wheel
- motor
- shearing
- gear
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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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
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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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially 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
- 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
- F04D7/045—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 with means for comminuting, mixing stirring or otherwise treating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an automatic uniform stirring sewage pump which comprises a shell, an impeller and a motor connected with the impeller, wherein a driving rod of the motor is connected with the impeller, the bottom end of the shell is provided with an open water absorption base, the outer part of the shell of the motor is also provided with a cooling sleeve, a condensation tank is arranged between the cooling sleeve and the shell of the motor, and the cooling sleeve is provided with a water inlet and a water outlet; the impeller sets up in the impeller cavity, the impeller cavity outer wall is provided with impeller belt cleaning device, impeller belt cleaning device is for the shower nozzle, and the impeller cavity bottom is provided with the horizontal pole, it is provided with the sheer pole to absorb water the base bottom, be provided with first axis of rotation and second axis of rotation between the sheer pole from top to bottom, all be provided with in two axis of rotation and cut wheel and break the wheel, wherein the coating has metal composite coating on break wheel and the shear wheel, and this device has the radiating effect reinforce, and the blowdown is effectual and difficult for blockking up, longe-lived characteristics.
Description
Technical Field
The invention relates to the field of sewage discharge, in particular to an automatic stirring sewage discharge pump.
Technical Field
A pump is a machine that delivers or pressurizes a fluid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, causing the liquid energy to increase. The pump is mainly used for conveying liquid such as water, oil, acid-base liquid, emulsion, suspension emulsion and liquid metal, and can also be used for conveying liquid, gas mixture and liquid containing suspended solid. Pumps can be generally classified by their operating principle into three types, positive displacement pumps, dynamic pumps and other types of pumps. In addition to classification by theory of operation, classification and naming may be by other methods.
At present, often adopt the dredge pump to carry out sewage discharge, at the dredge pump during operation, weeds that exist in the aquatic, fibre and indiscriminate stone can be stirred into in the pump, these stone and weeds can entangle the impeller, lead to the untimely clearance of going on of needs, when the operation is improper, cause the motor overload easily, can burn out the motor when serious, among the prior art, the adoption sets up the stirring wheel below the impeller, carry out the clearance of weeds and stone, but the treatment effect is poor, the washing of the long-time work impeller cavity of while is also the problem.
Among the prior art, for example, patent number is CN 201220302278.0's utility model discloses an automatic homogenize dredge pump, including the casing, install the bottom open-ended base that absorbs water on the casing, the inner chamber of the base that absorbs water is equipped with the impeller mechanism that is driven by the actuating lever, and the bottom of the base that absorbs water is the port that absorbs water, and the base lateral wall that absorbs water is opened there is the drainage port, install on the base that absorbs water and present the flow tube, present the flow tube and the inner chamber intercommunication of the base that absorbs water. The utility model discloses in the course of the work, most sewage of inhaled sewage is discharged from the drainage port, and the sewage of another part then flows back in the sewage by the current feedback pipe, to this, current feedback pipe spun sewage can make and treat that the sewage forms swirl state, disturb its sedimentation state, stir sewage debris, the realization stirs the precipitate in the sewage, the debris of being convenient for can all be inhaled the water absorption base, thereby stir sewage formation vortex through the current feedback pipe backward flow, but not good to the treatment effect of weeds etc..
Disclosure of Invention
The invention aims to solve the technical problems that an impeller is easy to knot and a motor has poor heat dissipation effect in the prior art, and provides an automatic uniform stirring sewage pump which has the advantages of clean weeds, strong heat dissipation effect of the motor and corrosion and rust resistance of a treated cutter.
In order to solve the above-mentioned purpose, the technical scheme adopted by the invention is as follows: an automatic uniform stirring sewage pump comprises a shell, an impeller and a motor connected with the impeller, wherein a driving rod of the motor is connected with the impeller, a stator and a rotor are arranged in the motor, a connecting plate is arranged on an upper end cover of the motor and is connected with a cable, an open water absorption base is arranged at the bottom end of the shell, a cooling jacket is also arranged outside the shell of the motor, a condensation tank is arranged between the cooling jacket and the shell of the motor, and a water inlet and a water outlet are arranged on the cooling jacket; the impeller sets up in the impeller cavity, the impeller cavity outer wall is provided with impeller belt cleaning device, impeller belt cleaning device is the shower nozzle, still be connected with the delivery port on the impeller cavity, the impeller cavity bottom is provided with the horizontal pole, the base bottom that absorbs water is provided with the sheer pole, be provided with first axis of rotation and second axis of rotation between the sheer pole from top to bottom, be provided with the bearing between axis of rotation and the sheer pole, all be provided with shearing wheel and break bar in two axis of rotation, two liang of relative settings of shearing wheel, two liang of relative settings of break bar, be connected with rotating device between axis of rotation and the motor actuating lever.
Preferably, the sprinkling nozzle is connected with a welding type straight-through pipe joint, and a water pipe is connected outside the welding type straight-through pipe joint.
Preferably, the shower nozzle is connected with the welded straight-through pipe joint in a welding mode.
Preferably, a ball valve is arranged on the connecting water pipe.
Preferably, the rotating device between the rotating shaft and the motor driving rod is a gear set, the motor driving rod is provided with a first gear, the first rotating shaft is provided with a second gear, the second rotating shaft is provided with a third gear, and the first gear, the second gear and the third gear are meshed with each other.
Preferably, a shearing wheel core, blades and a wheel rim are arranged on the shearing wheel, shearing blades are arranged on the blades, the shearing blades of the shearing wheel on the first rotating shaft are opposite to the shearing blades of the shearing wheel on the second rotating shaft in the opposite direction, and meshing teeth are arranged on the wheel rim.
Preferably, the cutter wheel is crescent, a cutter wheel core is arranged on the cutter wheel, and a cutting edge is arranged on the outer side of the cutter wheel.
Preferably, the surfaces of the shearing wheel and the cutter wheel are also provided with composite metal coatings, the composite metal coatings are metal nitride coatings, the composite metal coatings are deposited on the surfaces of the shearing wheel and the cutter wheel by adopting an ion plating method, and the ion plating method comprises the following steps:
1) roughening the metal surface, specifically polishing and sandblasting, wherein the polishing treatment adopts sand paper of more than 600 meshes for light polishing, the sandblasting treatment adopts quartz sand, copper ore sand or carborundum for treatment, and after the treatment is finished, cleaning and drying are carried out;
2) selecting a target material, wherein the target material is one of Ni, Ti, Si, Al and Cr, and N is selected2As protective gas, ion plating is adopted to deposit on the cutter wheel and the shearing wheel, wherein the vacuum degree in the reaction chamber is kept at 2.8 multiplied by 10 < -3 > to 5.6 multiplied by 10 < -3 >, N2The flow rate of the target material is 300-500sccm, the current of the target material is 55-80A, the temperature is kept at 450-500 ℃, and the reaction time is 30-60 min;
3) after deposition is finished, the cutter wheel and the shearing wheel are cooled to about 200 ℃ under the vacuum condition, heat preservation is carried out for 1h, and N is introduced after the deposition is finished2As a protective gas, in N2Then continuously cooling to below 100 ℃, and taking out after cooling is finished.
Preferably, the granularity of quartz sand, copper ore sand or carborundum in the sand blasting treatment is 1-2mm, and the pressure of compressed air is kept at 0.2-0.3 mpa.
The water absorption type impeller cleaning device has the advantages that the group of shearing wheels and the group of cutter wheels are additionally arranged on the water absorption base, stones and weeds can be effectively crushed through the matching between the cutter wheels and the front cutting wheels, so that the impeller cannot be wound to be dead, the running stability of equipment is ensured, meanwhile, the impeller cleaning device is arranged on the shell of the impeller cavity, the cleaning device is convenient to use and can effectively clean the impeller, meanwhile, the cooling sleeve is additionally arranged on the shell of the motor to ensure the stable running of the motor, meanwhile, the composite metal coating is coated on the surface of the cutter, the metal coating is nitride of Ni, Ti, Si, Al or Cr, the water absorption type impeller cleaning device has higher strength, meanwhile, corrosion and rust prevention can be realized, corrosion and rust prevention caused by long-time contact of the shearing wheels and the cutter wheels below a pump body and corrosion.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 shows the connection relationship between the driving rod and the rotating shaft of the motor of the present invention.
Fig. 3 is a top view of fig. 2 of the present invention.
FIG. 4 is a schematic view of a cutter wheel according to the present invention.
Fig. 5 is a schematic view of a shear wheel of the present invention.
In the figure, 1 is a cable, 2 is a connecting plate, 3 is a cooling jacket, 4 is a motor shell, 5 is a water inlet, 6 is a water outlet, 7 is a stator, 8 is a rotor, 9 is a welded through pipe joint, 10 is a pipeline, 11 is a ball valve, 12 is a driving rod, 13 is an upper cross bar, 14 is a cutting wheel, 15 is a cutter wheel, 16 is a water absorbing base, 17 is a lower cross bar, 18 is an impeller, 19 is a water outlet, 20 is a second rotating shaft, 21 is a first rotating shaft, 22 is a first gear, 23 is a second gear, 24 is a third gear, 25 is a cutter wheel core, 26 is a cutting edge, 27 is a meshing tooth, 28 is a cutting wheel core, and 29 is a cutting edge.
Detailed Description
The invention is further explained by the following embodiments with reference to the accompanying drawings, and as shown in fig. 1, the automatic stirring sewage pump includes a motor and a pump body, the motor includes a motor housing 4, a motor upper end cover, a stator 7, a mover 8 and a driving rod 12 inside the motor, wherein the motor upper end cover is provided with a circuit connecting plate 2, the connecting plate is connected to the motor through a circuit, an external cable 1 is connected to the connecting plate 2, further, in order to ensure the cooling performance of the motor, the motor housing is provided with a cooling device, the cooling device is a water cooling device, and includes a cooling jacket 3 outside the motor housing, a closed cavity is formed between the cooling jacket 3 and the motor housing, cooling liquid is placed in the cavity, a water inlet 5 is arranged at the upper part of the cooling jacket, a water outlet 6 is arranged at the lower part of the cooling jacket, the upper water outlet and the lower water outlet are connected with water pipes, the water pipes are connected with a water pump, and condensed water is continuously output and input back and forth to achieve the purpose of cooling.
Further, an output rod 12 of the motor is connected with an impeller 18, the impeller 18 is sleeved on the output rod 12, the tail of the output rod 12 is placed on an upper cross rod 13, a water outlet 19 is arranged beside an impeller cavity, a cleaning device of the impeller 18 is arranged on the other side of the impeller cavity, the impeller 18 is difficult to clean due to the fact that a stirring device is arranged on a water absorption base 16, meanwhile, long-time pollution discharge work is conducted, the impeller 18 is very easy to dirty or be infected with weeds and the like, a shower nozzle is arranged on the inner side of the impeller cavity and is connected with an external water pipe 11 through a welding type straight pipe joint 9, the welding type straight pipe joint 9 is connected with the shower nozzle in a welding mode, the connection is firm and reliable, a ball valve 11 is arranged on the water pipe, the ball valve 11 can bear high water pressure and facilitate the connection and the disassembly of the water pipe 10 through the fixation of the welding type straight pipe joint 9, and, when the shower nozzle needs to be cleaned, the motor is started, the ball valve 11 is started, the impeller 18 is driven by the driving rod 12 to rotate, the impeller 18 and the impeller cavity are cleaned under the action of the shower nozzle, the shower nozzle needs to be fixed and cannot move, and the shower nozzle is tightly attached to the inner wall.
Further, a first transmission shaft 21 and a second transmission shaft 20 are simultaneously arranged on the upper cross rod 13, a second gear 23 is arranged on the first transmission shaft 21, a third gear 24 is arranged on the second transmission shaft 20, a first gear 22 is arranged at the tail of the driving rod 12, the first gear, the second gear and the third gear are mutually meshed, the gears, the driving rod 12 and the rotating shaft are coaxially and fixedly arranged, the driving rod 12 and the rotating shaft and the upper cross rod are connected with bearings, the rotating shaft drives the gears at two sides to rotate through the gears on the output shaft 12 so as to drive the rotating shaft to rotate, a cutter wheel 15 and a shearing wheel 14 are sequentially arranged on the rotating shaft, the cutter wheel 15 is arranged at the lower part of the shearing wheel 14, the cutter wheels 15 and the shearing wheel 14 on the two transmission shafts are oppositely arranged, the transmission mode is simple and efficient, meanwhile, the cutter wheels 15 and the shearing wheel 14 are respectively arranged at two positions, better treatment of weeds and stones.
Further, in order to increase the contact area between the cutting edges 26 of the cutter wheel 15, the cutting edges are arranged in a crescent shape, the contact area between the cutting edges can be obviously increased compared with the circular cutting edges, a cutter wheel core 25 is further arranged on the cutter wheel 15 and is used for being conveniently fixed on a rotating shaft, the cutting wheel comprises a rim, blades and a cutting wheel core 28, the rim comprises meshing teeth 27, the meshing teeth 27 of the two cutting wheels are meshed with each other, stones can be easily crushed, and meanwhile, the cutting edges 29 are further arranged on the blades to remove weeds.
Further, a layer of metal oxide coating is arranged on the surfaces of the shearing wheel 14 and the cutter wheel 15, the composite metal coating is a metal nitride coating, the composite metal coating is deposited on the surfaces of the shearing wheel and the cutter wheel by adopting an ion plating method, and the ion plating method comprises the following steps:
1) roughening the metal surface, wherein the specific treatment mode is sand blasting, the sand blasting adopts quartz sand for treatment, the granularity of the treated quartz sand is 1mm, the pressure of compressed air is kept at 0.2mpa, and after the treatment is finished, cleaning and drying are carried out, wherein the cleaning solution is one of isopropanol or industrial ethanol;
2) selecting target material, wherein the target material is Ni and N is selected2As a protective gas, precipitation was carried out on the cutter wheel and the shear wheel by ion plating, in which the degree of vacuum in the reaction chamber was maintained at 3X 10-3, N2The flow of the target material is 300sccm, the current of the target material is 60A, the temperature is kept at 450 ℃, and the reaction time is 60 min;
3) after deposition is finished, the cutter wheel and the shearing wheel are cooled to be below 200 ℃ under the vacuum condition, heat preservation is carried out for 1h, and N is introduced after the deposition is finished2As a protective gas, in N2Then continuously cooling to below 100 ℃, and taking out after cooling is finished.
Example 1
As another example of this embodiment, the transmission device between the pneumatic rod and the first rotating shaft and the second rotating shaft may be a belt pulley transmission, a first belt pulley is disposed at the tail of the motor driving rod 12, the belt pulley on the driving rod is a double belt pulley, the tail of the driving rod is placed on the upper cross bar, corresponding second belt pulleys and third belt pulleys are disposed on the two rotating shafts on the upper cross bar, and the second belt pulleys and the third belt pulleys are connected with the first belt pulley on the motor driving rod through belts.
Examples example 2
As another example of the present embodiment, a method for producing a metal composite coating on the surfaces of the shear wheel 14 and the cutter wheel 15 is different from the example in that the raw materials of the example are modified, and the example includes the following steps:
1) roughening the metal surface, wherein the specific treatment mode is sand blasting, the sand blasting adopts carborundum for treatment, the granularity of treated quartz sand is 2mm, the pressure of compressed air is kept at 0.2mpa, and cleaning and drying are carried out after the treatment is finished, wherein the cleaning solution is one of isopropanol or industrial ethanol;
2) selecting a target material, wherein the target material is Ti and N is selected2As a protective gas, precipitation was carried out on the cutter wheel and the shear wheel by ion plating, wherein the degree of vacuum in the reaction chamber was maintained at 4X 10-3, N2The flow of the target material is 300sccm, the current of the target material is 60A, the temperature is kept at 450 ℃, and the reaction time is 60 min;
3) after deposition is finished, the cutter wheel and the shearing wheel are cooled to be below 200 ℃ under the vacuum condition, heat preservation is carried out for 1h, and N is introduced after the deposition is finished2As a protective gas, in N2Then continuously cooling to below 100 ℃, and taking out after cooling is finished.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides an automatic homogenize dredge pump, includes the casing, the impeller to and the motor of being connected with the impeller, the impeller is connected to the motor actuating lever, inside stator and the rotor of setting up of motor, the motor upper end cover is provided with the connecting plate, connecting plate connecting cable, the casing bottom is provided with open-ended water absorption base, its characterized in that: a cooling jacket is arranged outside the motor shell, a condensation tank is arranged between the cooling jacket and the motor shell, and a water inlet and a water outlet are formed in the cooling jacket; the impeller sets up in the impeller cavity, the impeller cavity outer wall is provided with impeller belt cleaning device, impeller belt cleaning device is the shower nozzle, still be connected with the delivery port on the impeller cavity, the impeller cavity bottom is provided with the horizontal pole, the base bottom that absorbs water is provided with the sheer pole, be provided with first axis of rotation and second axis of rotation between the sheer pole from top to bottom, be provided with the bearing between axis of rotation and the sheer pole, all be provided with shearing wheel and break bar in two axis of rotation, two liang of relative settings of shearing wheel, two liang of relative settings of break bar, be connected with rotating device between axis of rotation and the motor actuating lever.
2. An automatic homogenizing dredge pump of claim 1, characterized in that: the sprinkling nozzle is connected with a welding type straight-through pipe joint, and a water pipe is connected outside the welding type straight-through pipe joint.
3. An automatic homogenizing dredge pump of claim 2, characterized in that: the shower nozzle is connected with the welding type straight-through pipe joint in a welding mode.
4. An automatic homogenizing dredge pump of claim 2, characterized in that: and the connecting water pipe is provided with a ball valve.
5. An automatic homogenizing dredge pump of claim 1, characterized in that: the rotating device between the rotating shaft and the motor driving rod is a gear set, a first gear is arranged on the motor driving rod, a second gear is arranged on the first rotating shaft, a third gear is arranged on the second rotating shaft, and the first gear, the second gear and the third gear are meshed with each other.
6. An automatic homogenizing dredge pump of claim 1, characterized in that: the shearing wheel is provided with a shearing wheel core, blades and a wheel rim, the blades are provided with shearing blades, the shearing blades of the shearing wheel on the first rotating shaft are opposite to the shearing blades of the shearing wheel on the second rotating shaft, and the wheel rim is provided with meshing teeth.
7. An automatic homogenizing dredge pump of claim 1, characterized in that: the knife flywheel is crescent, be provided with knife flywheel wheel core on the knife flywheel, knife flywheel outside limit sets up the cutting edge.
8. An automatic homogenizing dredge pump of claim 1, characterized in that: the surfaces of the shearing wheel and the cutter wheel are also provided with composite metal coatings, the composite metal coatings are metal nitride coatings, the composite metal coatings are deposited on the surfaces of the shearing wheel and the cutter wheel by adopting an ion plating method, and the ion plating method comprises the following steps:
1) roughening the metal surface, specifically polishing and sandblasting, wherein the polishing treatment adopts sand paper of more than 600 meshes for light polishing, the sandblasting treatment adopts quartz sand, copper ore sand or carborundum for treatment, and after the treatment is finished, cleaning and drying are carried out;
2) selecting a target material, wherein the target material is one of Ni, Ti, Si, Al and Cr, and N is selected2As protective gas, ion plating is adopted to deposit on the cutter wheel and the shearing wheel, wherein the vacuum degree in the reaction chamber is kept at 2.8 multiplied by 10 < -3 > to 5.6 multiplied by 10 < -3 >, N2The flow rate of the target material is 300-500sccm, the current of the target material is 55-80A, the temperature is kept at 450-500 ℃, and the reaction time is 30-60 min;
3) after deposition is finished, the cutter wheel and the shearing wheel are cooled to about 200 ℃ under the vacuum condition, heat preservation is carried out for 1h, and N is introduced after the deposition is finished2As a protective gas, in N2Then continuously cooling to below 100 ℃, and taking out after cooling is finished.
9. An automatic homogenizing dredge pump of claim 8, characterized in that: the granularity of quartz sand, copper ore sand or carborundum in the sand blasting treatment is 1-2mm, and the pressure of compressed air is kept at 0.2-0.3 mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910473392.6A CN112012934A (en) | 2019-05-31 | 2019-05-31 | Automatic stirring sewage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910473392.6A CN112012934A (en) | 2019-05-31 | 2019-05-31 | Automatic stirring sewage pump |
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| Publication Number | Publication Date |
|---|---|
| CN112012934A true CN112012934A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910473392.6A Pending CN112012934A (en) | 2019-05-31 | 2019-05-31 | Automatic stirring sewage pump |
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| CN (1) | CN112012934A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117469178A (en) * | 2023-12-28 | 2024-01-30 | 山东中科翠微动力科技有限公司 | Liquid fertilizer pump |
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| CN117469178B (en) * | 2023-12-28 | 2024-03-01 | 山东中科翠微动力科技有限公司 | Liquid fertilizer pump |
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