CN113493322A - Oil well cement retarder and preparation method thereof - Google Patents
Oil well cement retarder and preparation method thereof Download PDFInfo
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- CN113493322A CN113493322A CN202110808110.0A CN202110808110A CN113493322A CN 113493322 A CN113493322 A CN 113493322A CN 202110808110 A CN202110808110 A CN 202110808110A CN 113493322 A CN113493322 A CN 113493322A
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- stirring
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses an oil well cement retarder and a preparation method thereof, wherein the retarder comprises sucrose, borax, hydroxy ethylidene diphosphate, ethylene diamine tetra methylene phosphonic acid sodium and sodium chloride solution, and the retarder comprises the following components in parts by weight: 1-2 parts of cane sugar, 0.5-1 part of borax, 2-4 parts of hydroxyethylidene diphosphate, 0.3-0.5 part of ethylene diamine tetramethylene phosphonic acid sodium and 4-8 parts of sodium chloride solution; according to the mixer, the vertical shaft and the transverse shaft are arranged in the mixing barrel, so that the solution can be stirred in different directions during mixing, the vertical shaft drives the stirring piece to drive the solution to roll left and right, the transverse shaft drives the stirring piece to drive the solution to roll up and down, and the transverse shaft and the vertical shaft simultaneously revolve around the fixed shaft, so that the solution can be continuously rolled in different directions in the mixing barrel, the phenomenon of sinking of additives in the solution is avoided, the mixing of the solution is more uniform, and the mixing quality is better.
Description
Technical Field
The invention relates to the technical field of cement retarders, in particular to an oil well cement retarder and a preparation method thereof.
Background
The retarder for oil well cement is an additive for oil well cement, and is usually used in cement slurry used for cementing operation of oil wells and gas wells. In the cementing operation of an oil-gas well, cement slurry is pumped into the well by a cement truck pump, and the cement slurry is replaced into an annular space between a casing and the well hole through a slurry replacing process, so that the aims of sealing and isolating an oil layer, a gas layer and a water layer to protect a production layer and support a protective casing are fulfilled.
The thickening time of a cement slurry is generally the time during which the cement slurry remains in a fluid, pumpable state. With the progress of hydration reaction in cement, when it reaches a certain degree, the cement paste loses fluidity and cannot be subjected to construction work. The cement slurry should have good flow pumpability before being pumped to the desired location. Therefore, the thickening time of the cement slurry is the key for controlling the well cementation operation, ensuring the construction safety and the well cementation quality. In order to accurately control the thickening time of cement paste and expand the application range of oil well cement, a retarder must be added into the cement paste to delay the hydration process of the cement paste in the underground high-temperature high-pressure environment and adjust the thickening time.
Need use the mixer to mix various raw materials in the preparation of oil well cement retarder, but current mixer generally all adopts vertical (mixing) shaft or horizontal (mixing) shaft to stir, and the mixed solution flow direction in the mixer can be unanimous with the (mixing) shaft when stirring, and it is not good to mix the effect to some materials take place the sinking phenomenon easily when stirring, further reduction the effect of mixing, based on above-mentioned problem, we provide an oil well cement retarder and preparation method thereof.
Disclosure of Invention
The invention aims to provide an oil well cement retarder and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the oil well cement retarder comprises sucrose, borax, hydroxyethylidene diphosphonic acid, ethylene diamine tetra methylene phosphonic acid sodium and sodium chloride solution, and the mass parts of the retarder are as follows: 1-2 parts of cane sugar, 0.5-1 part of borax, 2-4 parts of hydroxyethylidene diphosphate, 0.3-0.5 part of ethylene diamine tetramethylene phosphonic acid sodium and 4-8 parts of sodium chloride solution.
Preferably, the sodium chloride solution is formed by mixing water and sodium chloride.
Preferably, the ratio of water to sodium chloride is 15: 1.
A preparation method of an oil well cement retarder comprises the following steps:
And 2, pouring the mixed solution into a mixer, stirring for 10 minutes, and raising the temperature of the solution to 30-60 ℃ during stirring.
And 3, adjusting the pH value in the step 2 to 5.5-7.
And 4, stirring the mixed solution after the pH value is adjusted for 20-60 minutes again, and adjusting the temperature to 60-80 ℃ for keeping.
And 5, adding an initiator into the mixer after the step 4 is finished, stirring for 2-4 hours again, adjusting the temperature to 85-105 ℃, keeping, and obtaining the oil well cement retarder after stirring is finished.
The mixer in the step 2 of the preparation method of the oil well cement retarder comprises a mixing barrel and supporting legs for supporting the mixing barrel, wherein the lower end of one side of the mixing barrel is also provided with a discharge port communicated with the interior of the mixing barrel, a heater for heating is embedded in the lower end face of the mixing barrel, the upper end of the mixing barrel is fixedly connected with a mounting frame, the middle of the mounting frame is fixedly connected with a fixed shaft, the upper end of the fixed shaft is fixedly connected with a driving gear, the lower end of the fixed shaft is fixedly connected with a planar fluted disc, the central position of the lower end face of the mixing barrel is rotatably connected with a driving shaft, and the upper end of the driving shaft is provided with a stirring assembly for stirring by matching with the planar fluted disc and the driving gear;
a driving motor is installed on one side of the mixing barrel, and a transmission assembly for transmitting power is arranged between the output end of the driving motor and the driving shaft;
and the lower end surface of the mixing barrel is also provided with a gas injection assembly for filling gas into the mixing barrel.
Preferably, the stirring subassembly includes the installing frame, installing frame fixed connection is in drive shaft upper end position, fixedly connected with rotates the cover in the middle of the installing frame upper end, rotates the cover and rotates with the fixed axle to be connected, all rotate in the middle of the installing frame both sides riser and be connected with the cross axle, the cross axle is close to the equal fixedly connected with cooperation gear of one end of fixed axle, cooperation gear and plane fluted disc meshing, the equal fixedly connected with fixed plate in the diaphragm both sides of installing frame upper end and lower extreme all rotates between two fixed plates with one side and is connected with the vertical axis, the equal fixedly connected with driven gear in vertical axis upper end, driven gear and driving gear meshing, all install the stirring piece that is used for carrying out the stirring on vertical axis and the cross axle.
Preferably, the stirring part comprises a fixed ring frame and a plurality of stirring sheets, and the stirring sheets are fixedly connected between the two fixed ring frames.
Preferably, the transmission assembly comprises a first belt wheel, the first belt wheel is installed at the output end position of the driving motor, a second belt wheel is installed at the position where the lower end of the driving shaft penetrates through the mixing barrel, and a transmission belt is installed between the first belt wheel and the second belt wheel.
Preferably, the gas injection subassembly includes gas injection cylinder and mounting bracket, the gas injection cylinder passes through the mounting bracket and installs terminal surface under the blending tank, driving motor output lower extreme fixedly connected with carousel, the position that the carousel centre of a circle was kept away from to the terminal surface under the carousel rotates and is connected with the connecting rod, and the one end that the carousel was kept away from to the connecting rod is rotated with the piston rod one end on the gas injection cylinder and is connected, the gas injection cylinder output is connected with a plurality of gas injection pipe, and the one end that the gas injection cylinder was kept away from to the gas injection pipe all communicates with the blending tank is inside, the position that is close to the blending tank on the gas injection pipe all is equipped with the check valve for prevent that the solution in the blending tank from flowing to in the gas injection pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the mixer, the vertical shaft and the transverse shaft are arranged in the mixing barrel, so that the solution can be stirred in different directions during mixing, the vertical shaft drives the stirring piece to drive the solution to roll left and right, the transverse shaft drives the stirring piece to drive the solution to roll up and down, and the transverse shaft and the vertical shaft simultaneously revolve around the fixed shaft, so that the solution can be continuously rolled in different directions in the mixing barrel, the phenomenon of sinking of additives in the solution is avoided, the mixing of the solution is more uniform, and the mixing quality is better.
2. According to the mixing machine, the gas injection assembly is arranged on the lower end face of the mixing barrel, so that a piston rod on the gas injection barrel can be driven to pump while the driving motor drives the stirring assembly to rotate, gas is injected into the mixing barrel through the gas injection pipe, bubbles are formed in the injected gas in the solution, and the solution can be mixed more uniformly by matching with the stirring assembly.
Drawings
FIG. 1 is a schematic view of the structure of the mixer of the present invention.
FIG. 2 is a schematic bottom structure of the mixer of the present invention.
FIG. 3 is a schematic view showing the internal structure of the mixer of the present invention.
FIG. 4 is a schematic view of the structure of the stirring member of the mixer of the present invention.
FIG. 5 is a schematic view of the structure of the fixed shaft of the mixer according to the present invention.
FIG. 6 is a schematic view showing the structure of a stirring member of the mixer of the present invention.
Wherein: 1. a mixing barrel; 2. a support leg; 3. an outlet port; 4. a mounting frame; 5. a heater; 6. a drive belt; 7. a turntable; 8. a first pulley; 9. a drive motor; 10. a connecting rod; 11. a piston rod; 12. an air injection cylinder; 13. a gas injection pipe; 14. a second pulley; 15. a mounting frame; 16. a drive shaft; 17. a plane fluted disc; 18. a driven gear; 19. a stirring member; 190. a stationary ring frame; 191. a stirring sheet; 20. installing a frame; 21. a driving gear; 22. rotating the sleeve; 23. a fixing plate; 24. a vertical axis; 25. a horizontal axis; 26. a mating gear; 27. and fixing the shaft.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention, the oil well cement retarder comprises sucrose, borax, hydroxyethylidene diphosphonic acid, ethylene diamine tetra methylene phosphonic acid sodium and sodium chloride solution, and the mass parts of the retarder are as follows: 1-2 parts of cane sugar, 0.5-1 part of borax, 2-4 parts of hydroxyethylidene diphosphate, 0.3-0.5 part of ethylene diamine tetramethylene phosphonic acid sodium and 4-8 parts of sodium chloride solution.
The sodium chloride solution is formed by mixing water and sodium chloride; the ratio of water to sodium chloride was 15: 1.
A preparation method of an oil well cement retarder comprises the following steps:
And 2, pouring the mixed solution into a mixer, stirring for 10 minutes, and raising the temperature of the solution to 50 ℃ during stirring.
And 3, adjusting the pH value in the step 2 to 6.
And 4, stirring the mixed solution after the pH value is adjusted for 30 minutes again, and adjusting the temperature to 70 ℃ for keeping.
And 5, adding an initiator into the mixer after the step 4 is finished, stirring for 2 hours again, adjusting the temperature to 95, and keeping the temperature, thus obtaining the oil well cement retarder after the stirring is finished.
Referring to fig. 1-6, a mixer includes a mixing barrel 1 and a support leg 2 for supporting the mixing barrel 1, wherein a discharge port 3 communicated with the interior of the mixing barrel 1 is further provided at a lower end of one side of the mixing barrel 1, a heater 5 for heating is further embedded in a lower end surface of the mixing barrel 1, an installation frame 4 is fixedly connected to an upper end of the mixing barrel 1, a fixed shaft 27 is fixedly connected to the middle of the installation frame 4, a driving gear 21 is fixedly connected to an upper end of the fixed shaft 27, a planar fluted disc 17 is fixedly connected to a lower end of the fixed shaft 27, a driving shaft 16 is rotatably connected to a central position of the lower end surface of the mixing barrel 1, and a stirring assembly for stirring in cooperation with the planar fluted disc 17 and the driving gear 21 is provided at an upper end of the driving shaft 16;
a driving motor 9 is installed on one side of the mixing barrel 1, and a transmission assembly for transmitting power is arranged between the output end of the driving motor 9 and a driving shaft 16;
the lower end face of the mixing barrel 1 is also provided with a gas injection assembly for filling gas into the mixing barrel 1.
According to the mixer, the vertical shaft 24 and the horizontal transverse shaft 25 are arranged in the mixing barrel 1, so that the solution can be stirred in different directions during mixing, the vertical shaft 24 drives the stirring piece 19 to drive the solution to roll left and right, the horizontal transverse shaft 25 drives the stirring piece 19 to drive the solution to roll up and down, and the transverse shaft 25 and the vertical shaft 24 revolve around the fixed shaft 27 simultaneously, so that the solution can roll in different directions continuously in the mixing barrel 1, the phenomenon that additives in the solution sink is avoided, the mixing of the solution is more uniform, and the mixing quality is better.
The stirring assembly comprises an installation frame 20, the installation frame 20 is fixedly connected to the upper end of a driving shaft 16, a rotating sleeve 22 is fixedly connected to the middle of the upper end of the installation frame 20, the rotating sleeve 22 is rotatably connected with a fixed shaft 27, transverse shafts 25 are rotatably connected to the middles of vertical plates on two sides of the installation frame 20, one ends of the transverse shafts 25, close to the fixed shaft 27, are fixedly connected with matched gears 26, the matched gears 26 are meshed with a plane fluted disc 17, fixed plates 23 are fixedly connected to two sides of a transverse plate at the upper end and the lower end of the installation frame 20, a vertical shaft 24 is rotatably connected between the two fixed plates 23 on the same side, driven gears 18 are fixedly connected to the upper ends of the vertical shafts 24, the driven gears 18 are meshed with driving gears 21, and stirring pieces 19 for stirring are respectively installed on the vertical shafts 24 and the transverse shafts 25;
in the invention, the driving shaft 16 rotates to drive the mounting frame 20 to rotate, the rotation of the mounting frame 20 can enable the matching gear 26 on the transverse shaft 25 to be meshed with the plane fluted disc 17, so that the transverse shaft 25 rotates, and the driven gear 18 on the vertical shaft 24 is meshed with the driving gear 21 to rotate while the mounting frame 20 rotates, thereby stirring the solution;
the stirring part 19 comprises fixed ring frames 190 and stirring blades 191, and a plurality of stirring blades 191 are fixedly connected between the two fixed ring frames 190. The stirring sheet 191 arranged between the two fixed ring frames 190 and the stirring sheet 191 arranged in a ring shape can make the stirring effect better.
The transmission assembly comprises a first belt wheel 8, the first belt wheel 8 is arranged at the output end position of a driving motor 9, a second belt wheel 14 is arranged at the position, penetrating through the mixing barrel 1, of the lower end of a driving shaft 16, and a transmission belt 6 is arranged between the first belt wheel 8 and the second belt wheel 14; the transmission belt 6 arranged between the first belt wheel 8 and the second belt wheel 14 can realize power transmission between two shafts, and the transmission is smooth without rigid impact.
The gas injection assembly comprises a gas injection tube 12 and a mounting frame 15, the gas injection tube 12 is mounted on the lower end surface of the mixing barrel 1 through the mounting frame 15, the lower end of the output end of the driving motor 9 is fixedly connected with a rotary table 7, the position, far away from the circle center of the rotary table 7, of the lower end surface of the rotary table 7 is rotatably connected with a connecting rod 10, one end, far away from the rotary table 7, of the connecting rod 10 is rotatably connected with one end of a piston rod 11 on the gas injection tube 12, the output end of the gas injection tube 12 is connected with a plurality of gas injection tubes 13, one ends, far away from the gas injection tube 12, of the gas injection tubes 13 are communicated with the interior of the mixing barrel 1, and one-way valves are arranged on the gas injection tubes 13 and close to the mixing barrel 1 and used for preventing solution in the mixing barrel 1 from flowing into the gas injection tubes 13; according to the mixer, the gas injection assembly is arranged on the lower end face of the mixing barrel 1, the driving motor 9 can drive the stirring assembly to rotate, meanwhile, the piston rod 11 on the gas injection barrel 12 is driven to pump, gas is injected into the mixing barrel 1 through the gas injection pipe 13, injected gas forms bubbles in the solution, and the solution can be mixed more uniformly by matching with the stirring assembly.
The working principle of the invention is as follows: when the mixer is used, the solution and the raw materials to be mixed are poured into the mixing barrel 1, then the driving motor 9 is started, the driving motor 9 rotates to drive the first belt wheel 8 to rotate, the first belt wheel 8 rotates to drive the second belt wheel 14 to rotate under the drive of the transmission belt 6, the second belt wheel 14 rotates to drive the driving shaft 16, the driving shaft 16 rotates to drive the mounting frame 20 to rotate, the mounting frame 20 rotates to enable the matching gear 26 on the transverse shaft 25 to be meshed with the plane fluted disc 17 to enable the transverse shaft 25 to rotate, the driven gear 18 on the vertical shaft 24 is meshed with the driving gear 21 to rotate while the mounting frame 20 rotates, so that the solution is stirred, the output end of the driving motor 9 also drives the rotary disc 7 to rotate, the rotary disc 7 rotates to drive the connecting rod 10 to move, the connecting rod 10 moves to drive the piston rod 11 to reciprocate, the connecting rod 10 is reciprocated to drive the piston in the gas injection cylinder 12 to move, so as to output gas from the output end of the gas injection cylinder 12, the output gas is injected into the mixing barrel 1 from the gas injection pipe 13, and the solution is mixed and the temperature of the solution is correspondingly adjusted by the heater 5 according to the process requirements in cooperation with the stirring of the stirring assembly.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. Although the present description is described in terms of embodiments, not every embodiment includes only one technical solution, and such description of the embodiments is merely for clarity, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims (9)
1. The oil well cement retarder is characterized in that: the preservative comprises sucrose, borax, hydroxyethylidene diphosphate, ethylene diamine tetra methylene phosphonic acid sodium and sodium chloride solution, and the mass portions are as follows: 1-2 parts of cane sugar, 0.5-1 part of borax, 2-4 parts of hydroxyethylidene diphosphate, 0.3-0.5 part of ethylene diamine tetramethylene phosphonic acid sodium and 4-8 parts of sodium chloride solution.
2. An oil well cement retarder according to claim 1, wherein the sodium chloride solution is formed by mixing water and sodium chloride.
3. An oil well cement retarder according to claim 2, characterized in that the ratio of water to sodium chloride is 15: 1.
4. A method of preparing an oil well cement retarder according to any of claims 1 to 3, comprising the steps of:
step 1, mixing sucrose, borax, hydroxyethylidene diphosphate, sodium ethylene diamine tetra methylene phosphonate and sodium chloride solution according to a proportion to prepare a mixed solution;
step 2, pouring the mixed solution into a mixer, stirring for 10 minutes, and raising the temperature of the solution to 30-60 ℃ in the stirring process;
step 3, adjusting the pH value in the step 2 to 5.5-7;
step 4, stirring the mixed solution after the PH value adjustment for 20-60 minutes again, and adjusting the temperature to 60-80 ℃ for keeping;
and 5, adding an initiator into the mixer after the step 4 is finished, stirring for 2-4 hours again, adjusting the temperature to 85-105 ℃, keeping, and obtaining the oil well cement retarder after stirring is finished.
5. A mixing machine in the preparation method of the oil well cement retarder of claim 4, which comprises a mixing barrel (1) and legs (2) for supporting the mixing barrel (1), wherein the lower end of one side of the mixing barrel (1) is further provided with a discharge port (3) communicated with the inside of the mixing barrel (1), the lower end surface of the mixing barrel (1) is further embedded with a heater (5) for heating, and the mixing machine is characterized in that: the upper end of the mixing barrel (1) is fixedly connected with a mounting rack (4), the middle of the mounting rack (4) is fixedly connected with a fixed shaft (27), the upper end of the fixed shaft (27) is fixedly connected with a driving gear (21), the lower end of the fixed shaft (27) is fixedly connected with a plane fluted disc (17), the central position of the lower end face of the mixing barrel (1) is rotatably connected with a driving shaft (16), and the upper end of the driving shaft (16) is provided with a stirring assembly which is used for being matched with the plane fluted disc (17) and the driving gear (21) to stir;
a driving motor (9) is installed on one side of the mixing barrel (1), and a transmission assembly for transmitting power is arranged between the output end of the driving motor (9) and the driving shaft (16);
and the lower end surface of the mixing barrel (1) is also provided with a gas injection assembly for filling gas into the mixing barrel (1).
6. The mixing machine of claim 5, wherein the stirring assembly comprises a mounting frame (20), the mounting frame (20) is fixedly connected to the upper end of the driving shaft (16), a rotating sleeve (22) is fixedly connected to the middle of the upper end of the mounting frame (20), the rotating sleeve (22) is rotatably connected to a fixed shaft (27), a transverse shaft (25) is rotatably connected to the middle of vertical plates on two sides of the mounting frame (20), a matching gear (26) is fixedly connected to one end of the transverse shaft (25) close to the fixed shaft (27), the matching gear (26) is meshed with the plane fluted disc (17), fixing plates (23) are fixedly connected to two sides of the transverse plate on the upper end and the lower end of the mounting frame (20), a vertical shaft (24) is rotatably connected between the two fixing plates (23) on the same side, a driven gear (18) is fixedly connected to the upper end of the vertical shaft (24), and the driven gear (18) is meshed with the driving gear (21), and stirring pieces (19) for stirring are arranged on the vertical shaft (24) and the horizontal shaft (25).
7. The mixing machine according to claim 6, characterised in that said stirring element (19) comprises a fixed ring (190) and stirring blades (191), several of said stirring blades (191) being fixedly connected between two fixed ring (190).
8. The mixing machine according to claim 5, characterised in that the transmission assembly comprises a first pulley (8), the first pulley (8) being mounted at the output of the drive motor (9), a second pulley (14) being mounted at the lower end of the drive shaft (16) through the mixing tub (1), and a transmission belt (6) being mounted between the first pulley (8) and the second pulley (14).
9. The mixing machine according to claim 5, characterized in that said gas injection assembly comprises a gas injection cylinder (12) and a mounting frame (15), the gas injection cylinder (12) is arranged on the lower end surface of the mixing barrel (1) through a mounting rack (15), the lower end of the output end of the driving motor (9) is fixedly connected with a turntable (7), the position of the lower end surface of the turntable (7) far away from the circle center of the turntable (7) is rotatably connected with a connecting rod (10), one end of the connecting rod (10) far away from the turntable (7) is rotatably connected with one end of a piston rod (11) on an air injection cylinder (12), the output end of the gas injection cylinder (12) is connected with a plurality of gas injection pipes (13), one ends of the gas injection pipes (13) far away from the gas injection cylinder (12) are communicated with the interior of the mixing barrel (1), the positions of the gas injection pipe (13) close to the mixing barrel (1) are provided with one-way valves, for preventing the solution in the mixing barrel (1) from flowing into the gas injection pipe (13).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113880376A (en) * | 2021-10-15 | 2022-01-04 | 江西普瑞丰生态科技有限公司 | Livestock and poultry breeding manure innocent treatment device |
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