A production device and production method of a high salt-resistant drag reducer for fracturing

Abstract

The present invention provides a production device and a production method of a high-salt-resistant drag reducer for fracturing, which belongs to the field of petrochemical technology. It solves the technical problem that the high-salt-resistant drag reducer cannot be evenly added and mixed, and the integrated production of multiple processes cannot be realized, resulting in low production efficiency of the drag reducer. A production device for a high-salt-resistant drag reducer for fracturing includes a heating cylinder, the outer wall of the heating cylinder is penetrated with a feed hole, and the outer wall of the heating cylinder is fixedly connected with a guide ring, and the outer wall of the heating cylinder is located on the outside of the feed hole, and the surface of the guide ring is provided with a loading hole. In the present invention, by connecting the guide ring to the outer wall of the heating cylinder, and under the action of the material box connected to the guide ring surface, the material box can drive the components in component A and component B to be added to the inside of the heating cylinder in turn, and under the action of the transmission mixing unit, the rotating sleeve can synchronously mix the inside of the heating cylinder evenly when rotating.

Description

Technical Field

[0001] The invention belongs to the technical field of petrochemical industry, and relates to a production device for a highly salt-resistant drag reducer, in particular to a production device for a highly salt-resistant drag reducer for fracturing and a production method thereof. Background Art

[0002] In oilfield production enhancement operations, fracturing fluid is pumped under high pressure and high flow rate conditions to a borehole at a depth of about 500 to 6,000 meters or even deeper, causing the rock formation around the wellbore to crack. Drag reducer is a reagent that can reduce the resistance encountered by the fluid during transportation. It is mostly water-soluble or oil-soluble polymers. With the development of oilfield cementing technology, the requirements for the performance of cement slurry used for cementing are becoming higher and higher. Drag reducers in fracturing fluid reduce the resistance during migration by increasing viscosity and reducing turbulence. Therefore, the quality of drag reducers directly affects the use effect of fracturing fluid.

[0003] At present, the target formation of fracturing is becoming increasingly complex, so the requirements for the required drag reducers are getting higher and higher. The drag reducers used in fracturing construction not only need to have certain compressive strength and toughness, but also need to have certain salt resistance, so that they can eventually be discharged back from the formation. Commonly used drag reducers include polyacrylamide type, natural macromolecular type and surfactant type. Emulsion polyacrylamide type is targeted, different water qualities require different emulsions, and are expensive and large in dosage. The natural macromolecular type has a high content of residual gel-breaking liquid after fracturing, which causes great damage to the low permeability layer, limiting its use. The surfactant type requires a lot of compatibility additives and is highly toxic. Long-term use will cause water pollution.

[0004] After searching, for example, Chinese patent literature discloses a salt-resistant and salt-resistant instant drag reducer for oilfield fracturing and a preparation method thereof [Application Number: CN202111319348.3; Publication Number: CN113880992A]. This drag reducer is obtained by polymerizing component A and component B through an initiator; component A includes: polyethylene oxide, polyacrylamide, acrylic acid, polyisobutylene, silicone, polyimide, allyl resin, amino resin, water, and aliphatic thiol; component B includes: monoalkyl phosphate, polyvinyl acetate, isopropyl alcohol, benzyl alcohol, sodium acryloyloxyisoprene sulfonate, hexachlorocyclotriphosphazene, and tripolychlorophosphazene.

[0005] Although the salt-resistant and salt-resistant instant drag reducer for oilfield fracturing disclosed in the patent optimizes the preparation process by using an initiator to initiate the polymerization of component A and component B, and the obtained drag reducer is more soluble in water, has the advantages of salt resistance, salt resistance and easy solubility, and is suitable for oilfield fracturing, however, during the production of the drag reducer for fracturing, the user needs to continuously add materials to the reactor for mixing, and wait for molding and solidification at room temperature, which easily leads to accumulation of components in the reactor, resulting in uneven mixing of the components, affecting the reaction effect of the components, and the molding time at room temperature is relatively long, which is not convenient for mass production and increases the processing cost. Summary of the invention

[0006] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a production device and a production method for a highly salt-resistant drag reducer for fracturing. The technical problem to be solved by the invention is: how to uniformly add and mix the highly salt-resistant drag reducer and realize integrated production to improve the production efficiency of the highly salt-resistant drag reducer.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A production device for a highly salt-resistant drag reducer for fracturing, comprising a heating cylinder, wherein a feed hole is formed through the outer wall of the heating cylinder, a guide ring is fixedly connected to the outer wall of the heating cylinder, and the outer wall of the heating cylinder is located outside the feed hole, a loading hole is formed on the surface of the guide ring, and a material box is rotatably connected to the surface of the loading hole;

[0009] The outer wall of the material box is fixedly connected to a rotating sleeve plate, and the inner wall of the rotating sleeve plate is fixedly connected to a fixed plate, and the interior of the fixed plate is rotatably connected to a first gear plate, the first gear plate is driven by an electric motor, the outer wall of the first gear plate is meshedly connected to a gear ring, and the gear ring is fixedly installed on the outer wall of the heating cylinder;

[0010] The inner top wall of the rotating sleeve plate is fixedly connected with a rotating rod, and the bottom end of the rotating rod is connected with a transmission mixing unit;

[0011] A conveying and drying unit is installed at the bottom end of the heating cylinder, and a crushing unit is connected to one end of the conveying and drying unit away from the heating cylinder.

[0012] The working principle of the present invention is as follows: different weight portions of component A are added to the interior of the material box respectively, and a plurality of material distribution cavities are opened inside the material box, so that the two material boxes can classify and load component A and component B respectively, and a rotating sleeve plate is fixedly connected to the outer wall of the material box, and the first gear plate is rotated under the action of the electric motor being energized, and the first gear plate is rotated on the outer wall of the gear ring by being fixedly installed on the outer wall of the heating cylinder, so that the rotating sleeve plate rotates on the inner wall of the heating cylinder, and the rotating sleeve plate drives the two material boxes to rotate on the surface of the guide ring. The surface of the material guide ring rotates, and a feeding hole is opened on the surface of the material guide ring. When the material through hole at the bottom of the material box is rotated to the corresponding position of the feeding hole, the material inside the material distribution cavity is fed into the interior of the heating cylinder. Through this arrangement, component A and component B are evenly added to the interior of the heating cylinder. At the same time, under the action of the rotating rod fixedly connected to the top of the rotating sleeve, the rotating rod drives the main gear to rotate, and a plurality of slave gears are meshed and connected on the outer wall of the main gear. Under the action of the slave gears rotating and connected to the inner side of the rotating frame, the main gear drives the stirring rod to rotate inside the heating cylinder. At the same time, multiple gears drive the mixing rods to rotate and rotate on the periphery of the stirring rod, so as to realize the efficient mixing of component A and component B inside the heating cylinder. At the same time, the internal temperature of the heating cylinder is heated to ensure the mixing reaction effect. After the materials inside the heating cylinder are mixed, a conveying and drying unit is arranged at the bottom of the heating cylinder, so that the conveyor belt moves the mixed materials. At the same time, under the action of the heating rod arranged on the surface of the conveyor belt, the heating rod is pressed against the surface of the conveyor belt, so as to flatten the materials on the surface of the conveyor belt. Under the action of the heating roller arranged at the bottom of the conveyor belt, the conveyor belt can dry the materials when conveying the materials. A crushing unit is connected to the end of the conveyor belt, so that the materials directly enter the crushing box after conveying, and the movable rod drives the crushing roller to rotate through the transmission of the synchronous wheel and the synchronous belt. By fixing the second gear plate at the ends of the two movable rods, the two crushing rollers rotate towards each other, so as to realize the efficient crushing of the solidified drag reducer, so that the user can collect the crushed drag reducer particles at the bottom of the crushing box.

[0013] The outer wall of the heating cylinder is fixedly connected with two material guide rings, which are arranged in parallel, and the inner sides of the two material guide rings are provided with feeding holes;

[0014] The two feeding holes are symmetrically opened on the left and right sides of the heating cylinder, and the two feeding holes are respectively arranged at the upper and lower parts of the heating cylinder.

[0015] With the above structure, through the provision of two material guide rings, multiple components can be added to the interior of the heating cylinder in turn, and with the feed holes opened on both sides of the heating cylinder, the stability of the material addition inside the heating cylinder is achieved, avoiding the accumulation of materials inside the heating cylinder.

[0016] The rotating sleeve plate is slidably connected to the outer wall of the heating cylinder;

[0017] A plurality of through holes are provided at the top of the rotating sleeve plate, and the plurality of through holes are provided correspondingly to the plurality of feeding holes.

[0018] With the above structure, the rotating sleeve is arranged to facilitate the rotating sleeve to drive the two material boxes to rotate on the outer wall of the heating cylinder, and the through hole is arranged to facilitate the user to add material to the inside of the material box through the feeding hole, which is conducive to the recycling of production equipment.

[0019] The surfaces of the two material guide rings are both slidably connected with material boxes, and the material boxes are arranged in an annular structure;

[0020] The interior of the material box is divided into a plurality of material distribution cavities, the top end of each material distribution cavity is provided with a feeding hole, and the bottom end of each material distribution cavity is provided with a material passing hole.

[0021] By adopting the above structure, by opening a plurality of material dividing cavities inside the material box, the two material boxes can classify and load the materials respectively, ensuring the diversity of loading into the heating cylinder, making it easier for the equipment to meet different production needs, and having strong practicality.

[0022] The outer wall of the first gear plate is fixedly connected to the output end of the electric motor, and the electric motor is fixedly installed on the surface of the fixing plate.

[0023] With the above structure, the electric motor is provided to ensure stable rotation of the first gear plate, which facilitates the first gear plate to drive the rotating sleeve to rotate on the outer wall of the heating tube, while ensuring the rotation effect of the material box on the surface of the guide ring.

[0024] The transmission mixing unit includes a main gear, and the main gear is fixedly connected to the bottom end of the rotating rod, the outer wall of the main gear is annularly meshed with a plurality of slave gears, the outer walls of the plurality of slave gears are sleeved with an inner gear ring in meshing connection, and the inner gear ring is fixedly connected to the inner wall of the heating cylinder;

[0025] The outer wall of the rotating rod is fixedly connected with a rotating frame, and a plurality of slave gears are rotatably arranged inside the rotating frame;

[0026] The bottom end of the main gear is fixedly connected with a stirring rod, and a plurality of stirring rods are distributed in an annular manner on the outer circumference of the stirring rod, and the plurality of stirring rods are respectively fixedly installed on the bottom ends of the plurality of slave gears.

[0027] With the above structure, multiple slave gears are meshed and connected on the outer wall of the main gear. Under the action of the slave gears rotating and connected to the inner side of the rotating frame, the main gear drives the stirring rod to rotate inside the heating cylinder. At the same time, the multiple slave gears drive the mixing rod to rotate and rotate on the outer periphery of the stirring rod, thereby realizing efficient mixing of materials inside the heating cylinder.

[0028] The bottom outer wall of the stirring rod is fixedly connected to a first bevel gear, and the bottom end of the first bevel gear is annularly meshed with a plurality of second bevel gears, one side of the second bevel gear is fixedly connected to a material guide rod, and one end of the material guide rod away from the second bevel gear is rotatably connected to the bottom of the heating cylinder, and the material guide rod is vertically distributed to the stirring rod.

[0029] By adopting the above structure, a first bevel gear is arranged at the bottom of the stirring rod. Under the meshing action of the first bevel gear and the second bevel gear, the guide rod can rotate laterally at the bottom, so as to evenly guide the mixed material to the surface of the conveyor belt. Moreover, by vertically arranging the guide rod and the stirring rod, the mixing effect inside the heating cylinder is further improved, and the driving resources are effectively saved.

[0030] The conveying and drying unit includes a receiving hopper, and the receiving hopper is fixedly connected to the bottom end of the heating cylinder, the bottom end of the receiving hopper is fixedly connected to a conveying frame, both ends of the conveying frame are rotatably connected to conveying wheels, one of which is driven by a driving motor, and the other conveying wheel is transmission-connected to a crushing unit;

[0031] The outer wall of the conveying wheel is engaged with a conveying belt, and a fixed cover is arranged above the conveying belt, and the fixed cover is fixedly installed on the top of the conveying frame, and a plurality of heating rollers are fixedly installed inside the conveying frame, and the heating rollers are located at the bottom end of the conveying belt;

[0032] The inner top wall of the fixed cover is fixedly connected with a return spring, and the bottom end of the return spring is fixedly installed with a mounting frame, the interior of the mounting frame is rotatably connected with a rotating roller, and the outer wall of the rotating roller is fixedly connected with a heating rod and the heating rod is located above the conveyor belt;

[0033] A plurality of limiting rods are fixedly connected to the top end of the mounting frame, and the outer walls of the limiting rods are sleeved with return springs.

[0034] By adopting the above structure, the material inside the heating cylinder can be directly dried after mixing, and under the action of the heating rods and heating rollers respectively arranged above and below the conveyor belt, the material can be efficiently dried during the conveying process, thereby improving the processing efficiency of the drag reducer. Moreover, through the telescopic setting of the heating rod, it is convenient to extrude the drag reducer to be formed on the top, which is beneficial to improving the drying efficiency. The structure is simple and practical.

[0035] The crushing unit includes a first synchronous wheel, and the first synchronous wheel is fixedly installed at one end of the conveying wheel, the outer wall of the first synchronous wheel is meshedly connected with a synchronous belt, and the bottom inner wall of the synchronous belt is meshedly connected with a second synchronous wheel, and a movable rod is fixedly installed inside the second synchronous wheel, and the outer side of the movable rod is rotatably connected with a crushing box;

[0036] Two movable rods are arranged in parallel inside the crushing box, and the outer ends of the two movable rods are fixedly connected to the second gear plates, the two second gear plates are meshed and connected, and the second gear plates are located outside the crushing box;

[0037] The outer walls of the movable rods are fixedly connected with crushing rollers, and the two crushing rollers are staggered and meshed inside the crushing box;

[0038] The top of the crushing box is fixedly connected with a guide hopper, and the top of the guide hopper is fixedly connected with a conveying frame. A sealing cover is fixedly installed on the top surface of the guide hopper, and one end of the sealing cover is fixedly connected with a fixed cover.

[0039] By adopting the above structure, the movable rod drives the crushing roller to rotate through the transmission of the synchronous wheel and the synchronous belt, and the two crushing rollers rotate towards each other by fixing the second gear plate at the ends of the two movable rods, thereby achieving efficient crushing of the solidified drag reducer with high synchronization, which is convenient for integrated crushing of the dried drag reducer.

[0040] A method for producing a highly salt-resistant drag reducer for fracturing, applied to a production device for the highly salt-resistant drag reducer for fracturing, comprises the following steps:

[0041] S1. Prepare component A: add different weight portions of component A to the inside of the material box, wherein component A includes 33-42 parts of acrylamide, 15-23 parts of methyl methacrylate, 8-12 parts of hexadecyl acrylamide, 30-35 parts of water, and 7-11 parts of phosphoglyceride;

[0042] S2. Prepare component B: add different weight portions of component B to the inside of the material box, wherein component B includes 21-35 parts of polyvinyl pyrrolidone, 8-14 parts of sodium hydroxide, 20-26 parts of sodium lauryl sulfate, 13-18 parts of ammonium sulfate, 15-22 parts of sodium bisulfite, and 12-16 parts of azobisisobutyramidine hydrochloride;

[0043] S3, component mixing: add component A and component B evenly into the interior of the heating cylinder through the transmission mixing unit and stir, and heat the temperature to 63°C-75°C to make the mixing reaction uniform;

[0044] S4, conveying and heating: the mixed paste mixture is heated to a temperature of 82°C-94°C, and after keeping warm for 1-5 hours, it is dried by a conveying and drying unit;

[0045] S5. End crushing: The solidified block mixture is crushed and ground at the end of the conveyor belt through the crushing unit, and the crushed drag reducer particles are collected.

[0046] Compared with the prior art, the production equipment and production method of the high salt-resistant drag reducer for fracturing of the present invention have the following advantages:

[0047] 1. In the present invention, a guide ring is connected to the outer wall of the heating cylinder, and under the action of the material box connected to the guide ring surface by rotation, the material box can drive the components in component A and component B to be fed into the interior of the heating cylinder in turn, and under the action of the transmission mixing unit, the rotating sleeve can synchronously mix the interior of the heating cylinder evenly when rotating, thereby ensuring the mixing effect of component A and component B, which is beneficial to improving the reaction efficiency of the material, and by connecting the conveying and drying unit to the bottom of the heating cylinder, the mixed reaction material is effectively dried during the conveying process, compared with the existing room temperature standing, the production efficiency is greatly improved, and the integrated processing of the high salt-resistant drag reducer is realized, and by connecting the crushing unit at the other end of the conveyor belt, it is convenient to directly crush the formed and solidified high salt-resistant drag reducer, which is convenient for users to collect the high salt-resistant drag reducer later, ensuring the processing efficiency and integrated production of the high salt-resistant drag reducer, and the structure is compact, which is convenient for promotion and utilization.

[0048] 2. In the present invention, under the action of the first bevel gear fixedly installed at the bottom of the stirring rod, multiple second bevel gears are meshed and connected on the surface of the first bevel gear, so that multiple guide rods are synchronously rotated at the bottom of the heating cylinder, and the multi-directional mixing inside the heating cylinder is realized through the vertical release of the guide rod and the stirring rod, and the material inside the heating cylinder is accurately conveyed to the surface of the conveyor belt, which is convenient for the conveying drying unit to dry and solidify the evenly mixed material, thereby realizing the integrated processing of the drag reducer.

[0049] 3. In the present invention, by setting the conveying and drying unit, under the effect of the length of the conveyor belt, by setting heating rods and heating rollers respectively at the upper and lower parts of the conveyor belt, the material can be efficiently dried during the conveying process, so that the material can be solidified and formed on the surface of the conveyor belt, thereby improving the processing efficiency of the drag reducer. Moreover, through the telescopic setting of the heating rod, it is convenient to extrude the drag reducer to be formed on the upper part, which is convenient for shaping the material, and at the same time is beneficial to improving the drying efficiency. In addition, the structure is simple and the practicability is strong.

[0050] 4. In the present invention, by connecting the crushing unit to one end of the conveying wheel, the conveyor belt can directly move the dried and solidified high-salt-resistant drag reducer to the inside of the crushing box, which is convenient for the crushing roller to perform synchronous crushing. In addition, the setting of the synchronous belt and the synchronous wheel effectively saves driving resources, and at the same time achieves the synchronization and consistency of the conveying and drying unit and the crushing unit, which is convenient for the streamlined processing of the high-salt-resistant drag reducer, greatly improving the production efficiency of the high-salt-resistant drag reducer and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a structural schematic diagram of a production device for a high salt-resistant drag reducer for fracturing according to the present invention;

[0052] Figure 2 It is a schematic diagram of the connection structure between the heating cylinder and the rotating sleeve plate in the present invention;

[0053] Figure 3 It is a schematic diagram of the cross-sectional structure of the heating cylinder and the rotating sleeve plate in the present invention;

[0054] Figure 4 It is a schematic diagram of the cross-sectional structure of the heating cylinder and the transmission mixing unit in the present invention;

[0055] Figure 5 It is a schematic diagram of the top view of the transmission mixing unit in the present invention;

[0056] Figure 6 It is a schematic diagram of the three-dimensional structure of the material box in the present invention;

[0057] Figure 7 It is a schematic diagram of the cross-sectional structure of the material box in the present invention;

[0058] Figure 8 It is a schematic cross-sectional structure diagram of the transfer sleeve plate and the gear ring of the present invention;

[0059] Fig. 9 It is a partial cross-sectional structural schematic diagram of the conveying and drying unit in the present invention;

[0060] Fig.10 It is a structural schematic diagram of the conveying and drying unit and the crushing unit in the present invention;

[0061] Fig.11 It is a schematic diagram of the structure of the movable rod and the crushing roller in the present invention;

[0062] Fig.12 It is a performance test table of the high salt-resistant drag reducer in the present invention.

[0063] In the figure, 1, heating cylinder; 2, feeding hole; 3, guide ring; 4, loading hole; 5, material box; 6, feeding hole; 7, through hole; 8, rotating sleeve plate; 9, through hole; 10, fixed plate; 11, first gear plate; 12, electric motor; 13, gear ring; 14, rotating rod; 15, main gear; 16, rotating frame; 17, slave gear; 18, inner gear ring; 19, stirring rod; 20, mixing rod; 21, first bevel gear; 22, second bevel gear; 23, guide rod rod; 24, receiving hopper; 25, conveying frame; 26, conveying wheel; 27, conveying belt; 28, fixed cover; 29, heating roller; 30, reset spring; 31, mounting frame; 32, rotating roller; 33, heating rod; 34, limiting rod; 35, first synchronous wheel; 36, synchronous belt; 37, second synchronous wheel; 38, movable rod; 39, crushing roller; 40, second gear plate; 41, crushing box; 42, guide hopper; 43, sealing cover; 44, driving motor. DETAILED DESCRIPTION

[0064] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0065] Implementation method of production equipment of high salt-resistant drag reducer for fracturing:

[0066] like Figure 1-Figure 12 As shown, this embodiment provides a specific embodiment of a production device for a high salt-resistant drag reducer for fracturing, which is specifically implemented as follows:

[0067] A production device for a high salt-resistant drag reducer for fracturing, comprising a heating cylinder 1, a feed hole 2, a guide ring 3, a loading hole 4, a material box 5, a feeding hole 6, a through hole 7, a rotating sleeve plate 8, a through hole 9, a fixing plate 10, a first gear plate 11, an electric motor 12, a gear ring 13, a rotating rod 14, a main gear 15, a rotating frame 16, a slave gear 17, an inner gear ring 18, a stirring rod 19, a mixing rod 20, a first bevel gear 21, a second bevel gear 22, a guide rod 23, a receiving hopper 24, a conveying frame 25, a conveying wheel 26, a conveying The feeding belt 27, the fixed cover 28, the heating roller 29, the return spring 30, the mounting frame 31, the rotating roller 32, the heating rod 33, the limiting rod 34, the first synchronous wheel 35, the synchronous belt 36, the second synchronous wheel 37, the movable rod 38, the crushing roller 39, the second gear plate 40, the crushing box 41, the guide hopper 42, the sealing cover 43 and the driving motor 44, the outer wall of the heating cylinder 1 is penetrated with a feeding hole 2, and the outer wall of the heating cylinder 1 is fixedly connected with a guide ring 3, and the outer wall of the heating cylinder 1 is located on the outside of the feeding hole 2, and the heating cylinder 1 The outer wall of the heating tube 1 is fixedly connected with two material guide rings 3, and the material guide rings 3 are arranged in parallel, and the inner sides of the two material guide rings 3 are provided with feeding holes 2, and the two feeding holes 2 are symmetrically opened on the left and right sides of the heating tube 1, and the two feeding holes 2 are respectively arranged at the upper and lower sides of the heating tube 1. Through the arrangement of the two material guide rings 3, multiple ingredients can be added to the inside of the heating tube 1 in turn, and under the effect of the feeding holes 2 opened on both sides of the heating tube 1, the stability of the material addition inside the heating tube 1 is achieved, and the material inside the heating tube 1 is avoided. At the same time, a feeding hole 4 is provided on the surface of the material guide ring 3, and a material box 5 is rotatably connected to the surface of the feeding hole 4. The surfaces of the two material guide rings 3 are slidably connected to the material boxes 5, and the material boxes 5 are arranged in an annular structure. The interior of the material box 5 is divided into a plurality of material distribution cavities, and a feeding hole 6 is provided at the top of each material distribution cavity, and a through hole 7 is provided at the bottom of each material distribution cavity, and the through hole 7 is correspondingly arranged on the surface of the feeding hole 4, so that each material distribution cavity is rotated to the surface of the feeding hole 4 to feed the inside of the heating cylinder 1;

[0068] The outer wall of the material box 5 is fixedly connected with a rotating sleeve plate 8, and the rotating sleeve plate 8 is slidably connected to the outer wall of the heating tube 1. A plurality of through holes 9 are provided on the top of the rotating sleeve plate 8, and the plurality of through holes 9 are correspondingly provided with the plurality of feeding holes 6. Through the setting of the rotating sleeve plate 8, it is convenient for the rotating sleeve plate 8 to drive the two material boxes 5 to rotate on the outer wall of the heating tube 1, and through the setting of the through holes 9, it is convenient for the user to add materials to the inside of the material box 5 through the feeding holes 6, which is conducive to the recycling of the production equipment, and the inner wall of the rotating sleeve plate 8 is fixedly connected with a fixing plate 10, and the fixing plate 10 is rotatably connected to the inside of the fixing plate 10. The first gear plate 11 is driven by an electric motor 12. The outer wall of the first gear plate 11 is fixedly connected to the output end of the electric motor 12, and the electric motor 12 is fixedly mounted on the surface of the fixed plate 10. Under the action of the electric motor 12, the first gear plate 11 is rotated stably, so that the first gear plate 11 drives the rotating sleeve 8 to rotate on the outer wall of the heating tube 1, and at the same time ensures the rotation effect of the material box 5 on the surface of the guide ring 3. The outer wall of the first gear plate 11 is meshedly connected with a gear ring 13, and the gear ring 13 is fixedly mounted on the outer wall of the heating tube 1;

[0069] In this embodiment, the inner top wall of the rotating sleeve plate 8 is fixedly connected to a rotating rod 14, and the bottom end of the rotating rod 14 is connected to a transmission mixing unit, the transmission mixing unit includes a main gear 15, and the main gear 15 is fixedly connected to the bottom end of the rotating rod 14, the outer wall of the main gear 15 is annularly meshed with a plurality of slave gears 17, the outer walls of the plurality of slave gears 17 are sleeved with an inner gear ring 18 meshed, and the inner gear ring 18 is fixedly connected to the inner wall of the heating cylinder 1, the outer wall of the rotating rod 14 is fixedly connected to a rotating frame 16, and a plurality of slave gears 17 rotate inside the rotating frame 16, the bottom end of the main gear 15 is fixedly connected to a stirring rod 19, And there are multiple stirring rods 19 distributed in an annular manner on the outer periphery of the stirring rod 19, and the multiple stirring rods 19 are respectively fixedly installed on the bottom ends of multiple slave gears 17. Through such an arrangement, when the rotating sleeve 8 rotates on the outer wall of the heating tube 1, under the action of the slave gear 17 rotating and connected to the inner side of the rotating frame 16, the main gear 15 drives the stirring rod 19 to rotate inside the heating tube 1. At the same time, the multiple slave gears 17 drive the mixing rod 20 to rotate and rotate on the outer periphery of the stirring rod 19, thereby realizing efficient mixing of component A and component B inside the heating tube 1, and the driving structure is simple, the use cost is low, and the mixing effect is good.

[0070] The bottom outer wall of the stirring rod 19 is fixedly connected with a first bevel gear 21, and the bottom end of the first bevel gear 21 is annularly meshed with a plurality of second bevel gears 22, and a guide rod 23 is fixedly connected to one side of the second bevel gear 22, and the end of the guide rod 23 away from the second bevel gear 22 is rotatably connected to the bottom of the heating cylinder 1, and the guide rod 23 and the stirring rod 19 are vertically distributed. By arranging the first bevel gear 21 at the bottom of the stirring rod 19, the guide rod 23 can be horizontally rotated at the bottom under the meshing action of the first bevel gear 21 and the second bevel gear 22, so as to evenly guide the mixed materials to the surface of the conveyor belt 27, and the vertical arrangement of the guide rod 23 and the stirring rod 19 further improves the mixing effect inside the heating cylinder 1, and effectively saves driving resources.

[0071] In this embodiment, a conveying and drying unit is installed at the bottom end of the heating cylinder 1, and a crushing unit is connected to the end of the conveying and drying unit away from the heating cylinder 1. Specifically, the conveying and drying unit includes a receiving hopper 24, and the receiving hopper 24 is fixedly connected to the bottom end of the heating cylinder 1, and the bottom end of the receiving hopper 24 is fixedly connected to a conveying frame 25, and both ends of the conveying frame 25 are rotatably connected to conveying wheels 26, one of which is driven by a driving motor 44, and the other conveying wheel 26 is drivingly connected to the crushing unit, and the outer wall of the conveying wheel 26 is meshed with a conveying belt 27, and a fixed cover 28 is provided above the conveying belt 27, and the fixed cover 28 is fixedly installed on the top of the conveying frame 25, and a plurality of heating rollers 29 are fixedly installed inside the conveying frame 25, and the heating rollers 29 are located at the bottom end of the conveying belt 27, and the inner top wall of the fixed cover 28 is fixedly connected to a reset spring 30, and the reset spring 3 The bottom end of the heating drum 1 is fixedly mounted with a mounting frame 31, the top end of the mounting frame 31 is fixedly connected with a plurality of limit rods 34, and the outer wall of the limit rod 34 is sleeved with a return spring 30, the interior of the mounting frame 31 is rotatably connected with a rotating roller 32, and the outer wall of the rotating roller 32 is fixedly connected with a heating rod 33 and the heating rod 33 is located above the conveyor belt 27. Through such an arrangement, the material inside the heating drum 1 can be directly dried after mixing, and under the action of the heating rod 33 and the heating roller 29 respectively arranged above and below the conveyor belt 27, the material is efficiently dried during the transportation process, thereby improving the processing efficiency of the drag reducer, and through the telescopic arrangement of the heating rod 33, under the elastic action of the return spring 30, the heating rod 33 is self-expanded, which is convenient for extruding the drag reducer to be formed above, which is beneficial to improving the drying efficiency, and the structure is simple and practical.

[0072] In this embodiment, the crushing unit includes a first synchronous wheel 35, and the first synchronous wheel 35 is fixedly installed at one end of the conveying wheel 26, the outer wall of the first synchronous wheel 35 is meshedly connected with a synchronous belt 36, and the bottom inner wall of the synchronous belt 36 is meshedly connected with a second synchronous wheel 37, and a movable rod 38 is fixedly installed inside the second synchronous wheel 37. Through such an arrangement, the conveying belt 27 can synchronously drive the movable rod 38 when rotating and conveying, which is convenient for directly crushing the conveyed and dried drag reducer, ensuring the integration of the production equipment. At the same time, a crushing box 41 is rotatably connected to the outer side of the movable rod 38, and two movable rods 38 are arranged in parallel inside the crushing box 41. The outer ends of the two movable rods 38 are fixedly connected with second gear plates 40, and the two second gear plates 40 are meshedly connected. The rotation synchronization of the two movable rods 38 is realized, and the second gear plate 40 is located on the outside of the crushing box 41. The outer walls of the movable rods 38 are fixedly connected with crushing rollers 39, and the two crushing rollers 39 are staggered and meshed inside the crushing box 41, ensuring the crushing effect of the drag reducer solidified into blocks. Considering the feeding effect of the drag reducer solidified on the surface of the conveyor belt 27, a guide hopper 42 is fixedly connected to the top of the crushing box 41, and the top of the guide hopper 42 is fixedly connected to the conveying frame 25, and a sealing cover 43 is fixedly installed on the top surface of the guide hopper 42, and one end of the sealing cover 43 is fixedly connected to the fixed cover 28. Through such an arrangement, the drag reducer can directly enter the crushing box 41 on the surface of the conveyor belt 27, ensuring the safety of the movement of the drag reducer, and the structure is compact and practical.

[0073] The working principle of the production equipment is as follows: different weight portions of component A are added to the inside of the material box 5 respectively, and a plurality of material distribution cavities are opened inside the material box 5, so that the two material boxes 5 are respectively classified and loaded with component A and component B, and the rotating sleeve plate 8 is fixedly connected to the outer wall of the material box 5, and the first gear plate 11 is rotated under the action of the electric motor 12 being energized, and the gear ring 13 is fixedly installed on the outer wall of the heating tube 1, so that the first gear plate 11 is rotated on the outer wall of the gear ring 13, so that the rotating sleeve plate 8 is rotated on the inner wall of the heating tube 1, and the rotating sleeve plate 8 drives the two material boxes 5 to move on the surface of the guide ring 3. The material box 5 is rotated, and a feeding hole 4 is provided on the surface of the guide ring 3. When the material through hole 7 at the bottom end of the material box 5 is rotated to the corresponding position of the feeding hole 4, the material inside the material distribution cavity is fed into the interior of the heating cylinder 1. Through such an arrangement, the components A and B are evenly added to the interior of the heating cylinder 1. At the same time, under the action of the rotating rod 14 fixedly connected to the top of the rotating sleeve 8, the rotating rod 14 drives the main gear 15 to rotate. Through the meshing connection of multiple slave gears 17 on the outer wall of the main gear 15, under the action of the slave gear 17 rotating and connected to the inner side of the rotating frame 16, the main gear 15 drives the stirring rod 19 to rotate in the heating cylinder 1. The mixing rod 20 rotates at the same time, and the multiple slave gears 17 drive the mixing rod 20 to rotate and rotate on the periphery of the stirring rod 19, so as to achieve efficient mixing of component A and component B inside the heating cylinder 1. At the same time, the internal temperature of the heating cylinder 1 is heated to ensure the mixing reaction effect. After the materials inside the heating cylinder 1 are mixed, a conveying and drying unit is arranged at the bottom of the heating cylinder 1, so that the conveyor belt 27 moves the mixed materials. At the same time, under the action of the heating rod 33 arranged on the surface of the conveyor belt 27, the heating rod 33 is pressed against the surface of the conveyor belt 27, so that the materials on the surface of the conveyor belt 27 are flattened, and With the action of the heating roller 29 arranged at the bottom of the conveyor belt 27, the conveyor belt 27 can dry the material while conveying the material. A crushing unit is connected to the end of the conveyor belt 27, so that the material directly enters the crushing box 41 after conveying, and the movable rod 38 drives the crushing roller 39 to rotate through the transmission of the synchronous wheel and the synchronous belt 36. By fixing the second gear plate 40 at the ends of the two movable rods 38, the two crushing rollers 39 rotate towards each other, thereby realizing efficient crushing of the solidified drag reducer, and facilitating the user to collect the crushed drag reducer particles at the bottom of the crushing box 41.

[0074] In summary, by connecting the guide ring 3 to the outer wall of the heating cylinder 1 and under the action of the material box 5 that is connected to the surface of the guide ring 3 and rotates, the material box 5 can drive the components in component A and component B to be fed into the interior of the heating cylinder 1 in turn, and under the action of the transmission mixing unit, the rotating sleeve 8 can synchronously mix the interior of the heating cylinder 1 evenly during rotation, thereby ensuring the mixing effect of component A and component B, which is beneficial to improving the reaction efficiency of the material, and by connecting the conveying and drying unit to the bottom of the heating cylinder 1, the mixed reaction material is effectively dried during the conveying process. Compared with the existing room temperature standing, the production efficiency is greatly improved, and the integrated processing of the high salt-resistant drag reducer is realized. By connecting the crushing unit at the other end of the conveyor belt 27, it is convenient to directly crush the formed and solidified high salt-resistant drag reducer, which is convenient for the user to collect the high salt-resistant drag reducer later, ensuring the processing efficiency and integrated production of the high salt-resistant drag reducer, and the structure is compact, which is convenient for promotion and utilization.

[0075] Implementation method of the production method of high salt-resistant drag reducer for fracturing:

[0076] This embodiment provides a specific embodiment of a method for producing a highly salt-resistant drag reducer for fracturing, which is specifically implemented as follows:

[0077] Method embodiment 1:

[0078] The production method of the highly salt-resistant drag reducer for fracturing comprises the following steps:

[0079] S1. preparing component A: preparing component A in different weight portions, wherein component A comprises 33 parts of acrylamide, 15 parts of methyl methacrylate, 8 parts of hexadecyl acrylamide, 30 parts of water, and 7 parts of phosphoglyceride;

[0080] S2, preparing component B: preparing component B in different weight portions, wherein component B includes 21 parts of polyvinyl pyrrolidone, 8 parts of sodium hydroxide, 20 parts of sodium lauryl sulfate, 13 parts of ammonium sulfate, 15 parts of sodium bisulfite, and 12 parts of azobisisobutyramidine hydrochloride;

[0081] S3, component mixing: add component A and component B evenly into the reactor and stir, and heat the temperature to 63°C to make the mixing reaction uniform;

[0082] S4, conveying and heating: the mixed paste mixture is heated in a reactor at a temperature of 82° C., and after being kept warm for 5 hours, it is allowed to cool to room temperature and solidified;

[0083] S5. Final crushing: crushing and grinding the solidified block mixture, and collecting the crushed drag reducer particles.

[0084] The production equipment used in the first embodiment of the present method are all existing equipment that can be purchased on the market.

[0085] Method embodiment 2:

[0086] The production method of the highly salt-resistant drag reducer for fracturing comprises the following steps:

[0087] S1. Prepare component A: add different weight portions of component A to the inside of the material box 5 in different ways, wherein component A includes 33 parts of acrylamide, 15 parts of methyl methacrylate, 8 parts of hexadecyl acrylamide, 30 parts of water, and 7 parts of phosphoglyceride;

[0088] S2, preparing component B: adding different weight portions of component B to the inside of the material box 5, wherein component B includes 21 parts of polyvinyl pyrrolidone, 8 parts of sodium hydroxide, 20 parts of sodium lauryl sulfate, 13 parts of ammonium sulfate, 15-22 parts of sodium bisulfite, and 12 parts of azobisisobutyramidine hydrochloride;

[0089] S3, component mixing: adding component A and component B evenly into the interior of the heating cylinder 1 through the transmission mixing unit and stirring, and heating the temperature to 63° C. to make the mixing reaction uniform;

[0090] S4, conveying and heating: the mixed paste mixture is heated to 82°C, and after keeping warm for 1 hour, it is dried by conveying and drying unit;

[0091] S5, terminal crushing: the solidified block mixture is crushed and ground at the end of the conveyor belt 27 by a crushing unit, and the crushed drag reducer particles are collected.

[0092] The equipment used in Example 2 of the present method is the production equipment of the highly salt-resistant drag reducer for fracturing in the present invention.

[0093] Method embodiment three:

[0094] The production method of the highly salt-resistant drag reducer for fracturing comprises the following steps:

[0095] S1. Prepare component A: add different weight portions of component A to the inside of the material box 5 in a classified manner, wherein component A includes 42 parts of acrylamide, 23 parts of methyl methacrylate, 12 parts of hexadecyl acrylamide, 35 parts of water, and 11 parts of phosphoglyceride;

[0096] S2, preparing component B: adding different weight portions of component B to the inside of the material box 5, wherein component B includes 35 parts of polyvinyl pyrrolidone, 8-14 parts of sodium hydroxide, 26 parts of sodium lauryl sulfate, 18 parts of ammonium sulfate, 22 parts of sodium bisulfite, and 16 parts of azobisisobutyramidine hydrochloride;

[0097] S3, component mixing: adding component A and component B evenly into the interior of the heating cylinder 1 through the transmission mixing unit and stirring, and heating the temperature to 75° C. to make the mixing reaction uniform;

[0098] S4, conveying and heating: the mixed paste mixture is heated to 94°C, and after keeping warm for 1 hour, it is dried by conveying and drying unit;

[0099] S5, terminal crushing: the solidified block mixture is crushed and ground at the end of the conveyor belt 27 by a crushing unit, and the crushed drag reducer particles are collected.

[0100] The equipment used in the method for producing the highly salt-resistant drag reducer for fracturing in the third embodiment of the present invention is the same as the equipment used in the second embodiment of the present invention, except that the method conditions are different.

[0101] Method embodiment 4:

[0102] The production method of the highly salt-resistant drag reducer for fracturing comprises the following steps:

[0103] S1. Prepare component A: add different weight portions of component A to the inside of the material box 5, wherein component A includes 35 parts of acrylamide, 20 parts of methyl methacrylate, 10 parts of hexadecyl acrylamide, 32 parts of water, and 9 parts of phosphoglyceride;

[0104] S2, preparing component B: adding different weight portions of component B to the inside of the material box 5, wherein component B includes 28 parts of polyvinyl pyrrolidone, 12 parts of sodium hydroxide, 23 parts of sodium lauryl sulfate, 14 parts of ammonium sulfate, 18 parts of sodium bisulfite, and 14 parts of azobisisobutyramidine hydrochloride;

[0105] S3, component mixing: adding component A and component B evenly into the interior of the heating cylinder 1 through the transmission mixing unit and stirring, and heating the temperature to 63°C-75°C to make the mixing reaction uniform;

[0106] S4, conveying and heating: the mixed paste mixture is heated to 90°C, and after keeping warm for 4 hours, it is dried by conveying and drying unit;

[0107] S5, terminal crushing: the solidified block mixture is crushed and ground at the end of the conveyor belt 27 by a crushing unit, and the crushed drag reducer particles are collected.

[0108] The equipment used in the production method of the highly salt-resistant drag reducer for fracturing in the fourth embodiment of the present invention is the same as that used in the second embodiment of the present invention and the equipment used in the third embodiment of the present invention, except that the production method conditions are different.

[0109] Experimental example:

[0110] According to NB / T 14003.2-2016, the high salt-resistant drag reducers of method examples 1 to 4 were tested for performance, and compared with the existing production method of drag reducers, and the improvement efficiency was measured. In process examples 1 to 4 of the present application, after component A and component B were prepared, the same amount of drag reducers were taken from each group of process examples, and the drag reducers after production were tested for performance, and compared with the performance test results of the drag reducers. The measured results are as follows: Fig.12 As shown:

[0111] according to Fig.12 It can be seen from the data that only the production equipment of S1 to S5 is different between method embodiment 1 and method embodiment 2, and the drag reduction rate in method embodiment 2 is significantly higher than that in method embodiment 1. Therefore, the drag reduction rate of the salt-resistant drag reducer for fracturing can be improved by using the production equipment of the high salt-resistant drag reducer for fracturing in the present invention.

[0112] Compared with method embodiment 2, method embodiment 3 and method embodiment 4 only have different processing conditions, and the equipment used in the processing steps are the same. The drag reduction rates of method embodiments 3 and 4 are higher than that of method embodiment 2. It can be seen that different processing conditions will also affect the drag reduction rate of the salt-resistant drag reducer.

[0113] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A method for producing a highly salt-resistant drag reducer for fracturing, the method using the following production equipment, the production equipment comprising a heating cylinder (1), characterized in that: The outer wall of the heating cylinder (1) is provided with a feed hole (2) extending therethrough, and a guide ring (3) is fixedly connected to the outer wall of the heating cylinder (1), and the outer wall of the heating cylinder (1) is located outside the feed hole (2), a loading hole (4) is provided on the surface of the guide ring (3), and a material box (5) is rotatably connected to the surface of the loading hole (4); Two feed holes (2) are symmetrically opened on the left and right sides of the heating cylinder (1); The outer wall of the material box (5) is fixedly connected to a rotating plate (8), and the inner wall of the rotating plate (8) is fixedly connected to a fixed plate (10), and the interior of the fixed plate (10) is rotatably connected to a first gear plate (11), the first gear plate (11) is driven by an electric motor (12), the outer wall of the first gear plate (11) is meshingly connected to a gear ring (13), and the gear ring (13) is fixedly mounted on the outer wall of the heating cylinder (1); A plurality of through holes (9) are provided at the top end of the rotating sleeve plate (8), and the plurality of through holes (9) are provided corresponding to the plurality of feeding holes (6); The inner top wall of the rotating sleeve plate (8) is fixedly connected to a rotating rod (14), and the bottom end of the rotating rod (14) is connected to a transmission mixing unit; The transmission mixing unit comprises a main gear (15), and the main gear (15) is fixedly connected to the bottom end of the rotating rod (14); the outer wall of the main gear (15) is annularly meshed with a plurality of slave gears (17); the outer walls of the plurality of slave gears (17) are sleeved with an inner gear ring (18) in meshing connection; and the inner gear ring (18) is fixedly connected to the inner wall of the heating cylinder (1); The outer wall of the rotating rod (14) is fixedly connected to a rotating frame (16), and a plurality of slave gears (17) are rotatably arranged inside the rotating frame (16); The bottom end of the main gear (15) is fixedly connected to a stirring rod (19), and a plurality of stirring rods (19) are distributed in an annular manner on the outer circumference of the stirring rod (19), and the plurality of stirring rods (19) are respectively fixedly mounted on the bottom ends of the plurality of slave gears (17); The bottom outer wall of the stirring rod (19) at the bottom end of the main gear (15) is fixedly connected to a first bevel gear (21), and the bottom end of the first bevel gear (21) is annularly meshed with a plurality of second bevel gears (22), one side of the second bevel gear (22) is fixedly connected to a material guide rod (23), and one end of the material guide rod (23) away from the second bevel gear (22) is rotatably connected to the bottom of the heating cylinder (1), and the material guide rod (23) and the stirring rod (19) are vertically distributed; A conveying and drying unit is installed at the bottom end of the heating cylinder (1), and a crushing unit is connected to one end of the conveying and drying unit away from the heating cylinder (1); The conveying and drying unit comprises a receiving hopper (24), and the receiving hopper (24) is fixedly connected to the bottom end of the heating cylinder (1), the bottom end of the receiving hopper (24) is fixedly connected to a conveying frame (25), both ends of the conveying frame (25) are rotatably connected to conveying wheels (26), one of the conveying wheels (26) is driven by a driving motor (44), and the other conveying wheel (26) is drivingly connected to a crushing unit; The outer wall of the conveying wheel (26) is engaged with a conveying belt (27), and a fixed cover (28) is arranged above the conveying belt (27), and the fixed cover (28) is fixedly installed on the top of the conveying frame (25), and a plurality of heating rollers (29) are fixedly installed inside the conveying frame (25), and the heating rollers (29) are located at the bottom end of the conveying belt (27); A return spring (30) is fixedly connected to the inner top wall of the fixed cover (28), and a mounting frame (31) is fixedly mounted on the bottom end of the return spring (30), a rotating roller (32) is rotatably connected to the inside of the mounting frame (31), and a heating rod (33) is fixedly connected to the outer wall of the rotating roller (32), and the heating rod (33) is located above the conveyor belt (27); A plurality of limiting rods (34) are fixedly connected to the top end of the mounting frame (31), and the outer walls of the limiting rods (34) are sleeved with return springs (30); The production method of the production equipment of the highly salt-resistant drag reducer for fracturing comprises the following steps: S1. preparing component A: adding different weight portions of component A to the inside of the material box (5) in a classified manner, wherein component A comprises 33-42 parts of acrylamide, 15-23 parts of methyl methacrylate, 8-12 parts of hexadecyl acrylamide, 30-35 parts of water, and 7-11 parts of phosphoglyceride; S2, preparing component B: adding different weight portions of component B to the inside of the material box (5) in a classified manner, wherein component B includes 21-35 parts of polyvinyl pyrrolidone, 8-14 parts of sodium hydroxide, 20-26 parts of sodium dodecyl sulfate, 13-18 parts of ammonium sulfate, 15-22 parts of sodium bisulfite, and 12-16 parts of azobisisobutyramidine hydrochloride; S3, component mixing: adding component A and component B evenly into the interior of the heating cylinder (1) through the transmission mixing unit and stirring, while heating the temperature to 63° C.-75° C. to ensure a uniform mixing reaction; S4, conveying and heating: the mixed paste mixture is heated to a temperature of 82°C-94°C, and after keeping warm for 1-5 hours, it is dried by a conveying and drying unit; S5, end crushing: The solidified blocky mixed material is crushed and ground at the end of the conveyor belt (27) by a crushing unit, and the crushed drag reducer particles are collected.

2. The method for producing a highly salt-resistant drag reducer for fracturing according to claim 1, characterized in that: Two material guide rings (3) are fixedly connected to the outer wall of the heating cylinder (1), and the material guide rings (3) are arranged in parallel, and a material feed hole (2) is provided on the inner side of the two material guide rings (3).

3. The method for producing a highly salt-resistant drag reducer for fracturing according to claim 1, characterized in that: The rotating sleeve plate (8) is slidably connected to the outer wall of the heating cylinder (1).

4. The method for producing a highly salt-resistant drag reducer for fracturing according to claim 2, characterized in that: The surfaces of the two material guide rings (3) are both slidably connected to a material box (5), and the material box (5) is arranged in an annular structure; The material box (5) is internally divided into a plurality of material distribution cavities, each of which is provided with a feeding hole (6) at the top end and a material through hole (7) at the bottom end.

5. The method for producing a highly salt-resistant drag reducer for fracturing according to claim 1, characterized in that: The outer wall of the first gear plate (11) is fixedly connected to the output end of the electric motor (12), and the electric motor (12) is fixedly mounted on the surface of the fixing plate (10).

6. The method for producing a highly salt-resistant drag reducer for fracturing according to claim 1, characterized in that: The crushing unit comprises a first synchronous wheel (35), and the first synchronous wheel (35) is fixedly mounted on one end of the conveying wheel (26); the outer wall of the first synchronous wheel (35) is meshedly connected with a synchronous belt (36), and the bottom inner wall of the synchronous belt (36) is meshedly connected with a second synchronous wheel (37); a movable rod (38) is fixedly mounted inside the second synchronous wheel (37), and the outer side of the movable rod (38) is rotatably connected with a crushing box (41); Two movable rods (38) are arranged in parallel inside the crushing box (41), and the outer ends of the two movable rods (38) are fixedly connected to the second gear plates (40), the two second gear plates (40) are meshingly connected, and the second gear plates (40) are located outside the crushing box (41); The outer walls of the movable rods (38) are fixedly connected with crushing rollers (39), and the two crushing rollers (39) are staggered and meshed inside the crushing box (41); The top end of the crushing box (41) is fixedly connected to a material guide hopper (42), and the top end of the material guide hopper (42) is fixedly connected to a conveying frame (25). A sealing cover (43) is fixedly mounted on the top surface of the material guide hopper (42), and one end of the sealing cover (43) is fixedly connected to a fixed cover (28).

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