CN112354422A - Diluting device for production of demulsifier for oil field fracturing - Google Patents
Diluting device for production of demulsifier for oil field fracturing Download PDFInfo
- Publication number
- CN112354422A CN112354422A CN202110045789.2A CN202110045789A CN112354422A CN 112354422 A CN112354422 A CN 112354422A CN 202110045789 A CN202110045789 A CN 202110045789A CN 112354422 A CN112354422 A CN 112354422A
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- China
- Prior art keywords
- fixedly connected
- water
- motor
- demulsifier
- dilution
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/43—Mixing liquids with liquids; Emulsifying using driven stirrers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/48—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids
- B01F23/483—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids using water for diluting a liquid ingredient, obtaining a predetermined concentration or making an aqueous solution of a concentrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/45—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor
- B01F35/453—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor by moving them perpendicular to the plane of the opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/712—Feed mechanisms for feeding fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7174—Feed mechanisms characterised by the means for feeding the components to the mixer using pistons, plungers or syringes
Abstract
The invention discloses a diluting device for producing demulsifier for oilfield fracturing, relating to the technical field of demulsifier production and comprising a diluting kettle, a control panel is fixedly connected with the side wall of the dilution kettle, a top cover is arranged at the upper end of the dilution kettle, the top cover is connected with the dilution kettle through a lifting device, a motor is arranged above the top cover, the motor is connected with the top cover through a fixing device, the tail end of an output shaft of the motor penetrates through the top cover and is fixedly connected with a stirring device, the side wall of the output shaft of the motor is fixedly connected with a transmission device, the side wall of the dilution kettle is fixedly connected with a fixing pile, the fixing pile is fixedly connected with a device box, the inner bottom of the device box is fixedly connected with a water storage device, the inner wall of the device box is fixedly connected with a water pressing device, and the outer side wall of the dilution kettle is provided with a discharging pipe in a penetrating mode. The invention has reasonable structural design and strong structural continuity and can automatically inject water.
Description
Technical Field
The invention relates to the technical field of demulsifier production, in particular to a diluting device for producing demulsifier for oilfield fracturing.
Background
The demulsifier is a surfactant capable of destroying emulsion, and can be used as dewatering agent for removing water from crude oil and heavy oil to make water content meet the requirements, and can be used in oil well for reducing crude oil viscosity and making oil well not be blocked, and can be obtained by using fatty alcohol, epoxypropane and epoxyethane and making them produce polymerization reaction.
In the prior art, when the demulsifier is used for dilution production, water needs to be continuously added to stir and dilute the demulsifier, and in order to save the operation flow, a dilution device for producing the demulsifier for oilfield fracturing is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a diluting device for producing a demulsifier for oilfield fracturing.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a diluting device of demulsifier production for oil field fracturing, includes the dilution cauldron, the lateral wall department fixedly connected with control panel of dilution cauldron, the upper end of diluting the cauldron is provided with the top cap, the top cap is connected with the dilution cauldron through elevating gear, the top of top cap is provided with the motor, the motor is connected with the top cap through fixing device, the output shaft end of motor runs through top cap and fixedly connected with agitating unit, the output shaft lateral wall department fixedly connected with transmission of motor, the lateral wall department fixedly connected with spud pile of dilution cauldron, fixedly connected with device case on the spud pile, the interior bottom fixedly connected with water storage equipment of device case, the inner wall department fixedly connected with pressurized-water installation of device case, the lateral wall department of dilution cauldron runs through and is provided with the discharging pipe.
Preferably, elevating gear includes two fixed plates of fixed connection on diluting the cauldron inner wall, two the position of fixed plate corresponds each other, two the equal fixedly connected with electric telescopic handle in upper end of fixed plate, two the equal fixed connection in upper end of electric telescopic handle is at the lower extreme of top cap.
Preferably, the fixing device comprises two fixing rods fixedly connected to the upper end of the top cover, a fixing ring is fixedly connected between the two fixing rods, and the motor is fixedly connected in the fixing ring.
Preferably, agitating unit includes the puddler of fixed connection at motor output shaft end, the puddler is located the dilution cauldron completely, equidistant fixedly connected with a plurality of stirring rakes on the lateral wall of puddler.
Preferably, the transmission device comprises a first transmission wheel fixedly connected to the side wall of the output shaft of the motor, a connecting rod is fixedly connected to the side wall of the top cover, a rotating ring is fixedly connected to the other end of the connecting rod, a first rotating column is connected to the rotating ring in a rotating mode, a second transmission wheel is fixedly connected to the upper end of the first rotating column, and the first transmission wheel and the second transmission wheel are connected through a belt in a transmission mode.
Preferably, the water storage device is including rotating the storage water tank of connection in the device incasement bottom, one side of storage water tank is run through and is provided with the inlet tube, the other end of inlet tube runs through the lateral wall of device case and is provided with the valve, the opposite side of storage water tank runs through and is provided with the inlet tube, the other end of inlet tube runs through the lateral wall of device case and runs through the lateral wall of dilution cauldron.
Preferably, the water pressurizing device comprises a rotating shaft which is rotatably connected to the inner wall of the device box, a cam is fixedly connected to the side wall of the rotating shaft, a second rotating column is rotatably connected to the upper end of the device box in a penetrating manner, bevel gears are fixedly connected to one end of the second rotating column in the device box and the other end of the rotating shaft, the two bevel gears are meshed with each other, a connecting column is fixedly connected to the upper end of the second rotating column, a connecting groove is formed in the lower end of the first rotating column in a penetrating manner, the upper end of the connecting column is located in the connecting groove, a limit screw is connected to the side wall of the first rotating column in a penetrating manner in a threaded manner, a threaded hole is formed in the side wall of the connecting column in the connecting groove in a penetrating manner, the tail end of the limit screw is in threaded connection with the threaded hole, an opening, the upper end of the driving rod is fixedly connected with the driving plate, two spring plates are fixedly connected to the inner wall, opposite to the inner wall, of the water storage tank, the upper ends of the two spring plates are elastically connected with the lower end of the driving plate through springs, and the upper end of the driving plate is abutted to the cam.
The invention has the following beneficial effects;
1. through setting up elevating gear, transmission, water storage device and pressure water installation mutually support, when the motor drives the puddler pivoted, can drive the cam through belt drive and rotate, can reciprocate to drive the pressurized-water board back and forth movement in the storage water tank, can dilute the emulsifier in can pouring into the dilution cauldron into through the outlet pipe with the dilution water in the storage water tank, can automatic water injection, when not needing the water injection, can twist out stop screw, no longer toward the dilution cauldron in water can, the integrated device structure continuity is strong, be worth promoting.
Drawings
FIG. 1 is a schematic structural diagram of a dilution device produced by a demulsifier for oilfield fracturing according to the present invention;
FIG. 2 is a cross-sectional view of a set box of a dilution device produced by a demulsifier for oilfield fracturing according to the present invention;
FIG. 3 is a partial cross-sectional view of a rotating column of a dilution device produced by the demulsifier for oilfield fracturing according to the present invention;
fig. 4 is a schematic structural diagram of a cam of a dilution device produced by the demulsifier for oilfield fracturing.
In the figure: the device comprises a dilution kettle 1, a control panel 2, a stirring paddle 3, a stirring rod 4, a fixing plate 5, an electric telescopic rod 6, a top cover 7, a fixing rod 8, a fixing ring 9, a motor 10, a first driving wheel 11, a belt 12, a second driving wheel 13, a connecting rod 14, a rotating ring 15, a limiting screw 16, a first rotating column 17, a connecting column 18, a second rotating column 19, a fixing pile 20, a valve 21, a water inlet pipe 22, a device box 23, a water outlet pipe 24, a discharging pipe 25, a rotating shaft 26, a cam 27, a bevel gear 28, a driving plate 29, a spring 30, a driving rod 31, a water pressing plate 32, a water storage tank 33 and a.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, a diluting device of demulsifier production for oil field fracturing, including diluting cauldron 1, the lateral wall department fixedly connected with control panel 2 of diluting cauldron 1, the upper end of diluting cauldron 1 is provided with top cap 7, top cap 7 is connected with diluting cauldron 1 through elevating gear, elevating gear includes two fixed plates 5 of fixed connection on diluting cauldron 1 inner wall, the position of two fixed plates 5 corresponds each other, the equal fixedly connected with electric telescopic handle 6 in upper end of two fixed plates 5, the equal fixed connection in lower extreme of top cap 7 in upper end of two electric telescopic handle 6.
Wherein, top cap 7's top is provided with motor 10, motor 10 passes through electric wire connection with control panel 2, motor 10 is connected with top cap 7 through fixing device, fixing device includes two dead levers 8 of fixed connection in top cap 7 upper end, the solid fixed ring 9 of common fixedly connected with between two dead levers 8, motor 10 fixed connection is in solid fixed ring 9, top cap 7 and fixedly connected with agitating unit are run through to motor 10's output shaft end, agitating unit includes fixed connection at the terminal puddler 4 of motor 10 output shaft, puddler 4 is located dilution cauldron 1 completely, equidistant a plurality of stirring rakes 3 of fixedly connected with on the lateral wall of puddler 4.
Specifically, the transmission device is fixedly connected to the side wall of the output shaft of the motor 10 and comprises a first transmission wheel 11 fixedly connected to the side wall of the output shaft of the motor 10, a connecting rod 14 is fixedly connected to the side wall of the top cover 7, the other end of the connecting rod 14 is fixedly connected with a rotating ring 15, a first rotating column 17 is rotatably connected to the rotating ring 15, a second transmission wheel 13 is fixedly connected to the upper end of the first rotating column 17, and the first transmission wheel 11 is in transmission connection with the second transmission wheel 13 through a belt 12.
Specifically, the lateral wall department fixedly connected with spud pile 20 of dilution cauldron 1, fixedly connected with device case 23 on the spud pile 20, the interior bottom fixedly connected with water storage device of device case 23, water storage device is including rotating the storage water tank 33 of connecting the bottom in device case 23, one side of storage water tank 33 is run through and is provided with inlet tube 22, the other end of inlet tube 22 runs through the lateral wall of device case 23 and is provided with valve 21, the opposite side of storage water tank 33 runs through and is provided with outlet pipe 24, the other end of outlet pipe 24 runs through the lateral wall of device case 23 and runs through the lateral wall of dilution cauldron 1.
Specifically, a water pressurizing device is fixedly connected to the inner wall of the device box 23, the water pressurizing device comprises a rotating shaft 26 rotatably connected to the inner wall of the device box 23, a cam 27 is fixedly connected to the side wall of the rotating shaft 26, the upper end of the device box 23 is rotatably connected with a second rotating column 19 in a penetrating manner, one end of the second rotating column 19 located in the device box 23 and the other end of the rotating shaft 26 are both fixedly connected with bevel gears 28, the two bevel gears 28 are mutually meshed, the upper end of the second rotating column 19 is fixedly connected with a connecting column 18, the lower end of the first rotating column 17 is provided with a connecting groove in a penetrating manner, the upper end of the connecting column 18 is located in the connecting groove, the side wall of the first rotating column 17 is in threaded connection with a limiting screw 16, the side wall of the connecting column 18 located in the connecting groove is provided with a threaded hole, be provided with pressurized-water plate 32 in the opening, pressurized-water plate 32's upper end fixedly connected with actuating lever 31, actuating lever 31's upper end fixedly connected with drive plate 29, two spring plates of equal fixedly connected with on the relative inner wall in storage water tank 33, all through spring 30 elastic connection between the upper end of two spring plates and the lower extreme of drive plate 29, drive plate 29's upper end offsets with cam 27, dilutes the lateral wall department of cauldron 1 and runs through and be provided with discharging pipe 25.
In the invention, an operator controls two electric telescopic rods 6 to lift a top cover 7 by controlling a control panel 2, then adds an emulsifier to be diluted into a dilution kettle 1, then closes the top cover 7, enables a connecting groove at the lower end of a first rotating column 17 to be connected with a connecting column 18, screws a limit screw 16 into a threaded hole 34, can start a motor 10 through the control panel 2, the tail end of an output shaft of the motor 10 drives a stirring rod 4 to drive a plurality of stirring paddles 3 to rotate in the dilution kettle 1, can drive the emulsifier to rotate, meanwhile, the tail end of the output shaft of the motor 10 drives a first transmission rod wheel 11 to rotate, the first transmission wheel 11 drives a second transmission wheel 13 to rotate through a belt 12, the second transmission wheel 13 can drive the first rotating column 17 to rotate on a rotating ring 15, can drive a second rotating column 19 to rotate through the connecting column 18, and the second rotating column 19 drives a rotating shaft 26 to rotate through, the rotating shaft 26 drives the cam 27 to rotate in the device box 23, the driving plate 29 can be pushed to move up and down under the action of the two springs 30 in a reciprocating mode, dilution water can be injected into the dilution kettle 1 through the water outlet pipe 24 through the water pressing plate 32 to be mixed, and when water injection is not needed, the first rotating column 17 can idle by screwing out the limiting screw 16.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides a diluting device of demulsifier production for oil field fracturing, includes dilution kettle (1), its characterized in that, the lateral wall department fixedly connected with control panel (2) of dilution kettle (1), the upper end of dilution kettle (1) is provided with top cap (7), top cap (7) are connected with dilution kettle (1) through elevating gear, the top of top cap (7) is provided with motor (10), motor (10) are connected with top cap (7) through fixing device, the output shaft end of motor (10) runs through top cap (7) and fixedly connected with agitating unit, the output shaft lateral wall department fixedly connected with transmission of motor (10), the lateral wall department fixedly connected with spud pile (20) of dilution kettle (1), fixedly connected with device case (23) on spud pile (20), the interior bottom fixedly connected with water storage device of device case (23), the inner wall department fixedly connected with pressurized-water device of device case (23), the lateral wall department of diluting cauldron (1) runs through and is provided with discharging pipe (25), elevating gear includes two fixed plates (5), two of fixed connection on diluting cauldron (1) inner wall the position of fixed plate (5) corresponds each other, two the equal fixedly connected with electric telescopic handle (6) in upper end of fixed plate (5), two the equal fixed connection in upper end of electric telescopic handle (6) is at the lower extreme of top cap (7).
2. The dilution unit for the production of demulsifier for oilfield fracturing according to claim 1, wherein the fixing device comprises two fixing rods (8) fixedly connected to the upper end of the top cover (7), a fixing ring (9) is fixedly connected between the two fixing rods (8), and the motor (10) is fixedly connected in the fixing ring (9).
3. The diluting device for the production of the demulsifier for oilfield fracturing according to claim 1, wherein the stirring device comprises a stirring rod (4) fixedly connected to the end of the output shaft of the motor (10), the stirring rod (4) is completely positioned in the diluting kettle (1), and a plurality of stirring paddles (3) are fixedly connected to the side wall of the stirring rod (4) at equal intervals.
4. The dilution device for the production of the demulsifier for oilfield fracturing according to claim 1, wherein the transmission device comprises a first transmission wheel (11) fixedly connected to the side wall of the output shaft of the motor (10), a connecting rod (14) is fixedly connected to the side wall of the top cover (7), a rotating ring (15) is fixedly connected to the other end of the connecting rod (14), a first rotating column (17) is rotatably connected to the rotating ring (15), a second transmission wheel (13) is fixedly connected to the upper end of the first rotating column (17), and the first transmission wheel (11) and the second transmission wheel (13) are in transmission connection through a belt (12).
5. The dilution device for demulsifier production for oilfield fracturing according to claim 1, wherein the water storage device comprises a water storage tank (33) rotatably connected to the bottom in the device tank (23), one side of the water storage tank (33) is provided with a water inlet pipe (22) in a penetrating manner, the other end of the water inlet pipe (22) is provided with a valve (21) in a penetrating manner through the side wall of the device tank (23), the other side of the water storage tank (33) is provided with a water outlet pipe (24) in a penetrating manner, and the other end of the water outlet pipe (24) is provided with a water outlet pipe in a penetrating manner through the side wall of the device tank (23) and through the side.
6. The diluting device for the production of the demulsifier for oilfield fracturing according to claim 1, wherein the water pressurizing device comprises a rotating shaft (26) rotatably connected to the inner wall of the device box (23), a cam (27) is fixedly connected to the side wall of the rotating shaft (26), a second rotating column (19) is rotatably connected to the upper end of the device box (23) in a penetrating manner, one end of the second rotating column (19) located in the device box (23) and the other end of the rotating shaft (26) are both fixedly connected with a bevel gear (28), the two bevel gears (28) are meshed with each other, a connecting column (18) is fixedly connected to the upper end of the second rotating column (19), a connecting groove is formed in the lower end of the first rotating column (17) in a penetrating manner, the upper end of the connecting column (18) is located in the connecting groove, and a limit screw (16) is threadedly connected to the side wall of the first rotating column (17, lateral wall department that spliced pole (18) is located the spread groove runs through and is provided with screw hole (34), the tail end threaded connection of stop screw (16) is in the screw hole, the upper end of storage water tank (33) runs through and is provided with the opening, be provided with pressurized-water plate (32) in the opening, the upper end fixedly connected with actuating lever (31) of pressurized-water plate (32), the upper end fixedly connected with drive plate (29) of actuating lever (31), two spring plates of equal fixedly connected with on the relative inner wall in storage water tank (33), two all through spring (30) elastic connection between the upper end of spring plate and the lower extreme of drive plate (29), the upper end and cam (27) of drive plate (29) offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110045789.2A CN112354422A (en) | 2021-01-14 | 2021-01-14 | Diluting device for production of demulsifier for oil field fracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110045789.2A CN112354422A (en) | 2021-01-14 | 2021-01-14 | Diluting device for production of demulsifier for oil field fracturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112354422A true CN112354422A (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110045789.2A Withdrawn CN112354422A (en) | 2021-01-14 | 2021-01-14 | Diluting device for production of demulsifier for oil field fracturing |
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| Country | Link |
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| CN (1) | CN112354422A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114452885A (en) * | 2022-01-26 | 2022-05-10 | 徐添凤 | Vegetable seedling substrate mixing stirring device |
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| DE20101925U1 (en) * | 2001-02-03 | 2001-06-13 | Zenner Wolfgang | Mixing tool for a mixing device |
| CN108273437A (en) * | 2018-04-27 | 2018-07-13 | 合肥图腾龙机械设计有限公司 | A kind of livestock feed processing feedstuff mixed stirring device |
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| CN111631205A (en) * | 2020-07-22 | 2020-09-08 | 白美荣 | Liquid pesticide preparation spraying device for agricultural planting |
| CN212040117U (en) * | 2020-03-23 | 2020-12-01 | 方圆集团海阳环保科技有限公司 | Road bridge construction batching mixer |
| CN212263009U (en) * | 2020-04-20 | 2021-01-01 | 济南半一电子有限公司 | Germanium diode processing is with corrosive liquid preparation facilities |
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2021
- 2021-01-14 CN CN202110045789.2A patent/CN112354422A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20101925U1 (en) * | 2001-02-03 | 2001-06-13 | Zenner Wolfgang | Mixing tool for a mixing device |
| CN108273437A (en) * | 2018-04-27 | 2018-07-13 | 合肥图腾龙机械设计有限公司 | A kind of livestock feed processing feedstuff mixed stirring device |
| CN210631995U (en) * | 2019-08-09 | 2020-05-29 | 陆霞 | Liquid adding diluting device for medical clinical laboratory |
| CN212040117U (en) * | 2020-03-23 | 2020-12-01 | 方圆集团海阳环保科技有限公司 | Road bridge construction batching mixer |
| CN212263009U (en) * | 2020-04-20 | 2021-01-01 | 济南半一电子有限公司 | Germanium diode processing is with corrosive liquid preparation facilities |
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| CN114452885A (en) * | 2022-01-26 | 2022-05-10 | 徐添凤 | Vegetable seedling substrate mixing stirring device |
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Application publication date: 20210212 |