Sealed type coaxial double-speed stirring reaction kettle

Abstract

The invention discloses a sealed type coaxial double-speed stirring reaction kettle, and relates to the technical field of reaction kettles, the sealed type coaxial double-speed stirring reaction kettle comprises a barrel, a rotating shaft is mounted on the barrel, a mounting rack is mounted in the barrel, stirring blades are rotatably sleeved on the mounting rack, the stirring blades are sleeved with a sealing cover, and a linkage mechanism is located in the stirring blades. The linkage mechanism comprises a driving gear, a driven gear and a linkage gear, the linkage gear is meshed with the driving gear and the driven gear by sliding the linkage gear, the driving gear is driven to rotate through rotation of the rotating shaft, then the meshed driven gear and linkage gear are driven to rotate, and the rotating driven gear drives the stirring blades to rotate at the upper end of the mounting frame; the outer diameters of the driving gears of the two linkage mechanisms are different, so that the two stirring blades generate different rotating speeds, and large shearing force can be generated by double-speed stirring, so that uniform mixing of reaction materials and reaction efficiency are promoted, and the problem that uniform mixing and efficient reaction of the reaction materials cannot be guaranteed by a single-speed stirring blade in an existing reaction kettle is solved.

Description

Technical Field

[0001] The invention relates to the technical field related to reactors, and in particular to a sealed coaxial dual-speed stirring reactor. Background Art

[0002] Reactors are commonly used equipment in the chemical industry and are widely used in the fields of chemical industry, pharmaceuticals, food processing, coatings, petroleum, environmental protection, etc., for chemical reactions, material mixing, heating, cooling and separation. The main function of a reactor is to contain reactants, provide a suitable environment for the reaction to occur, and optimize the reaction conditions by stirring, heating, cooling and other means. Specific functions include promoting reactions, temperature control, pressure control, material mixing, material separation and discharge.

[0003] The main components of the reactor include the reactor body, stirring system, feeding and discharging system, temperature control system, pressure control system, sealing system and safety protection device. The reactants are added to the reactor through the feed port, and catalysts, solvents or other auxiliary materials may be added at the same time. The reactor adjusts the temperature and controls the reaction rate through a heating or cooling device according to the needs of the reaction. Then the agitator in the reactor starts to operate to ensure that the reactants are fully mixed and promote the uniform reaction. The stirring speed is usually adjusted according to the properties of the reactants. During the reaction and under the control of temperature, pressure, stirring speed and other conditions, the reactants are gradually converted into products. At this time, it may be necessary to monitor changes in the reaction process, such as temperature, pressure, pH value, concentration, etc. Take samples regularly from the sampling port to check whether the reaction is proceeding as expected. If necessary, adjust the reaction conditions (such as temperature, stirring speed, etc.). After the reaction is completed, the product is discharged through the discharge port, and post-processing processes such as separation and purification may also be required.

[0004] The stirring system design of the reactor in many chemical and pharmaceutical processes is usually to ensure uniform mixing and efficient reaction of the reaction materials. At this time, the single-speed stirring blade in the reactor is not enough to meet the demand. In order to promote uniform mixing of the reaction materials and reaction efficiency, a sealed coaxial dual-speed stirring reactor is now provided. Summary of the invention

[0005] The object of the present invention is to provide a sealed coaxial dual-speed stirring reactor to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a sealed coaxial dual-speed stirring reactor, comprising a cylinder of the reactor, a rotating shaft rotatably installed inside the cylinder, two mounting frames fixedly installed inside the cylinder, and the rotating shaft passes through the mounting frames;

[0007] A stirring blade, wherein two stirring blades are provided, and the stirring blades are rotatably sleeved on the upper end of the mounting frame, and a sealing cover is fixedly sleeved on the outer side wall of the stirring blade, and the sealing cover is rotatably sleeved on the upper end of the stirring blade;

[0008] The linkage mechanism is located inside the stirring blade, and includes a driving gear, a driven gear and a linkage gear. The driving gear is fixedly sleeved on the outer wall of the rotating shaft, the driven gear is rotatably mounted on the mounting frame, and the driven gear is meshed with the inner wall of the stirring blade, and the linkage gear is movably mounted on the mounting frame;

[0009] The sliding linkage gear makes the linkage gear mesh with the driving gear and the driven gear, the rotation of the rotating shaft drives the driving gear to rotate, and the rotation of the driven gear and the linkage gear makes the stirring blade rotate at the upper end of the mounting frame.

[0010] In a further embodiment, the driven gear and the linkage gear are arranged as a group of linkage parts, a plurality of linkage parts are arranged in the same stirring blade, and the plurality of linkage parts are evenly distributed in a circular array with the rotating shaft as the center.

[0011] In a further embodiment, a fixing mechanism for connecting the driven gear and the linkage gear is installed at the upper end of the mounting frame.

[0012] In a further embodiment, the fixing mechanism includes a connecting frame, a locking screw and a sliding screw, and the driven gear and the linkage gear are rotatably mounted on the connecting frame. The upper end of the mounting frame is provided with a mounting hole matching the screw head of the locking screw and a sliding groove matching the screw head of the sliding screw, and the rod bodies of the locking screw and the sliding screw both pass through the connecting frame, and the ends of the locking screw and the sliding screw extending from the upper end of the connecting frame are both threadedly connected with nuts.

[0013] In a further embodiment, the cover is provided with a sliding hole, in which a pressing block for fixing the cover is slidably installed, an outer side wall of the cover is threadedly connected with a fixing screw, and one end of the fixing screw is rotatably connected to the pressing block.

[0014] In a further embodiment, the pressing block includes a colloid and a plate body, the fixed screw is rotatably connected to the plate body, and the rubber strip is in contact with the outer side wall of the rotating shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention is a sealed coaxial dual-speed stirring reactor, in which a linkage gear is meshed with a driving gear and a driven gear by sliding a linkage gear, and the driving gear is driven to rotate by rotating a rotating shaft, thereby driving the meshed driven gear and the linkage gear to rotate, and the rotating driven gear drives a stirring blade to rotate at the upper end of a mounting frame. The driving gears of the two linkage mechanisms have different outer diameters, so that the two stirring blades have different rotation speeds. The dual-speed stirring can generate a larger shear force, thereby promoting uniform mixing of reaction materials and reaction efficiency, and solves the problem that a single-speed stirring blade in an existing reactor is insufficient to ensure uniform mixing of reaction materials and efficient reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cylinder structure of an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the installation structure of the stirring blade according to an embodiment of the present invention;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of a cylinder according to an embodiment of the present invention;

[0020] Figure 4 An exploded view of a stirring blade and a mounting frame according to an embodiment of the present invention;

[0021] Figure 5 For the embodiment of the present invention Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 A cross-sectional view of a stirring blade, a mounting frame and a sealing cover according to an embodiment of the present invention;

[0023] Figure 7 A schematic diagram of a cross-sectional structure of a cover according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the installation structure of the driven gear and the linkage gear according to an embodiment of the present invention;

[0025] Fig. 9 An exploded view of a driven gear, a linkage gear and a connecting frame according to an embodiment of the present invention;

[0026] Fig.10 It is a schematic diagram of a partial structure of a mounting frame according to an embodiment of the present invention;

[0027] Fig.11 It is a schematic diagram of a partial cross-sectional structure of a mounting frame according to an embodiment of the present invention;

[0028] Fig.12 A top view of a stirring blade and a small driving gear according to an embodiment of the present invention;

[0029] Fig.13 This is a top view of the stirring blade and the large driving gear according to an embodiment of the present invention.

[0030] In the figure: 1, cylinder; 11, mounting frame; 2, rotating shaft; 3, stirring blade; 4, linkage mechanism; 41, driving gear; 42, driven gear; 43, linkage gear; 5, fixing mechanism; 51, connecting frame; 52, locking screw; 53, sliding screw; 54, nut; 6, sealing cover; 61, fixing screw; 62, pressing block. DETAILED DESCRIPTION

[0031] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-13 This embodiment provides a sealed coaxial dual-speed stirring reactor, including a reactor cylinder 1, the reference model of the reactor cylinder 1 is FYF-1000L, and a support frame (not shown in the figure) is installed on the outer wall of the reactor cylinder 1, and the support frame is used to support the reactor cylinder 1. A discharge port is opened at the lower end of the reactor cylinder 1, and a rotating shaft 2 is rotatably installed in the reactor cylinder 1, and the upper end of the rotating shaft 2 passes through the upper end of the reactor cylinder 1. The rotating shaft 2 extending from the upper end of the reactor cylinder 1 is connected to a motor, and the rotating shaft 2 is driven by the motor to rotate in the reactor cylinder 1.

[0033] like Figure 2 and Figure 3 As shown, two mounting frames 11 are installed inside the cylinder 1, and a stirring blade 3 is rotatably installed on the upper end of the mounting frame 11. One end of the stirring blade 3 is close to the inner wall of the cylinder 1, and the gap between the blade and the inner wall of the cylinder 1 is 2 to 8 mm. The gap ensures that when the stirring blade 3 rotates, the blade will not scratch the cylinder 1 and can contact the material to the greatest extent.

[0034] After the material is put into the cylinder 1, the stirring blade 3 rotates to drive the material to mix. In order to drive the stirring blade 3 to rotate, a linkage mechanism 4 is installed inside the stirring blade 3. Figure 4 and Figure 5As shown, an inner tooth groove is provided in the middle of the stirring blade 3, and the linkage mechanism 4 is installed inside the stirring mechanism 3. Among them, the linkage mechanism 4 includes a driving gear 41, a driven gear 42 and a linkage gear 43. The driving gear 41 is fixedly sleeved on the outer wall of the rotating shaft 2. The outer wall of the rotating shaft 2 is provided with a groove. The inner wall of the driving gear 41 is provided with a convex strip matching the groove, and the convex strip prevents the driving gear 41 from rotating on the outer wall of the rotating shaft 2. The upper end of the stirring blade 3 is rotatably sleeved with a cover 6, which ensures the sealing of the stirring blade 3 and prevents liquid from entering the interior of the stirring blade 3. At the same time, the cover 6 and the mounting frame 11 limit the driving gear 41 to prevent the driving gear 41 from sliding up and down on the outer wall of the rotating shaft 2.

[0035] like Figure 8 As shown, a driven gear 42 and a linkage gear 43 are set as a set of linkage parts. The linkage mechanism 4 includes a driving gear 41 and four sets of linkage parts, and the four sets of linkage parts are evenly arranged in a circular array with the rotating shaft 2 as the center of the circle in the stirring blade 3. Four fixing mechanisms 5 are rotatably mounted on the upper end of the mounting frame 11, and the fixing mechanisms 5 are used to mount the driven gear 42 and the linkage gear 43 on the mounting frame 11. Figure 8 and Fig. 9 As shown, the fixing mechanism 5 includes a connecting frame 51, a locking screw 52 and a sliding screw 53. The connecting frame 51 is configured as a frame-type structure. The driven gear 42 and the linkage gear 43 are rotatably mounted on the connecting frame 51, and the driven gear 42 and the linkage gear 43 are meshed with each other. A mounting hole and a slide groove are provided at the upper end of the mounting frame 11. The screw head of the locking screw 52 is configured as a hexagonal head, and the screw head of the locking screw 52 is engaged in the mounting hole. The screw head of the locking screw 52 is configured as an arc head, and the screw head of the locking screw 52 is slidably mounted in the slide groove. The rod bodies of the locking screw 52 and the sliding screw 53 both pass through both sides of the connecting frame 51, and the connecting frame 51 is rotated on the mounting frame 11 with the driven gear 42 as the center of the circle through the locking screw 52 and the sliding screw 53. The ends of the locking screw 52 and the sliding screw 53 extending from the upper end of the connecting frame 51 are both threadedly connected with a nut 54, as shown in FIG. Figure 6 As shown, by tightening the two nuts 54, the locking screw 52 and the sliding screw 53 can be driven to move upward, so that the screw head of the locking screw 52 contacts the inner top surface of the mounting hole, and the screw head of the sliding screw 53 contacts the inner top surface of the slide groove. By increasing the friction coefficient between the screw heads of the locking screw 52 and the sliding screw 53 and the mounting frame 11, the locking screw 52 and the sliding screw 53 are fixed by damping, that is, the rotation angle of the connecting frame 51 is fixed.

[0036] The driven gear 42 and the linkage gear 43 preferably use the same gear, that is, gears with the same number of teeth. Figure 8As shown, the connecting frame 51, the driven gear 42 and the linkage gear 43 are set as an integrated structure. Except for destroying the structure of the connecting frame 51, the driven gear 42 and the linkage gear 43 cannot be directly removed from the connecting frame 51, ensuring the uniformity of specifications of all linkage parts.

[0037] During installation, select the driving gear 41 of the required diameter, and rotate and sleeve both the stirring blade 3 and the driving gear 41 on the upper end of the mounting frame 11. Fig.10 and 11 As shown, in the initial state of the mounting frame 11, the rods of the locking screw 52 and the sliding screw 53 extend from the upper end of the mounting frame 11. During installation, align the two through holes of the connecting frame 51 with the locking screw 52 and the sliding screw 53, so that the connecting frame 51 is sleeved on the outer side walls of the locking screw 52 and the sliding screw 53, and at this time, the driven gear 42 and the inner tooth groove of the stirring blade 3 are meshed with each other. The connecting frame 51 is rotated to make the linkage gear 43 mesh with the driving gear 41. After the meshing is completed, the nut 54 is threadedly connected to the parts of the locking screw 52 and the sliding screw 53 extending from the upper end of the connecting frame 51, and the nut 54 is tightened to fix the connecting frame 51, that is, the meshing state of the linkage gear 43 and the driving gear 41 is maintained. Subsequently, the cover 6 is sleeved on the upper ends of the stirring blade 3, the nut 54 and the driving gear 41, and the lower end of the cover 6 is provided with a slot matching the nut 54 (a circular hole and an arc hole, which are aligned with the locking screw 52 and the sliding screw 53 respectively).

[0038] The cover 6 has a sliding hole inside, in which a pressing block 62 is slidably installed. The pressing block 62 includes a colloid and a plate. The colloid is made of rubber and the plate is made of metal. The colloid can be driven to be located at the opening of the sliding hole by sliding the plate. Figure 7 As shown, the outer wall of the cover 6 is also threadedly connected with a fixing screw 61, one end of the fixing screw 61 extends into the sliding hole, and the other end extending into the sliding hole is rotatably connected to the plate body of the pressing block 62, and the pressing block 62 can be driven to move in the sliding hole by rotating the fixing screw 61. Finally, the rotating shaft 2 is inserted into the cylinder 1 from the top of the cylinder 1, and the inserted part passes through the cover 6, the stirring blade 3, the driving gear 41 and the mounting frame 11. The fixing screw 61 is tightened to drive the colloid of the pressing block 62 to fit on the outer wall of the rotating shaft 2. By increasing the friction coefficient between the pressing block 62 and the rotating shaft 2, the cover 6 can be fixed by damping.

[0039] The upper end of the rotating shaft 2 is connected to the output shaft of the motor (direct connection, gear connection, belt connection are all possible). The rotating shaft 2 can be driven to rotate by starting the motor, and the rotating shaft 2 drives the two driving gears 41 to rotate synchronously, and then drives the stirring blade 3 to rotate on the mounting frame 11 through the driven gear 42 and the linkage gear 43. Four groups of evenly distributed linkage parts can maintain the stability of the rotation of the stirring blade 3. Of course, the linkage parts are not limited to four groups. In principle, the more the number of linkage parts, the more stable the rotation of the stirring blade 3. However, when multiple linkage gears 43 are engaged with the intermediate driving gear 41, each linkage gear 43 will apply a certain load to the driving gear 41, and the sum of the loads will affect the rotation of the driving gear 41. Therefore, the number of linkage parts is preferably 3 to 6 groups, and multiple groups of linkage parts are evenly distributed in a circular array.

[0040] The outer wall of the rotating shaft 2 is fitted to the inner wall of the middle through hole of the mounting bracket 11. The mounting bracket 11 can limit the rotating shaft 2, stabilize the rotation of the rotating shaft 2, and prevent the rotating shaft 2 from swinging during the rotation process.

[0041] like Fig.12 and Fig.13 As shown, the driving gears 41 of the two linkage mechanisms 4 are set to have different diameters. According to the gear transmission principle, the formula of the transmission ratio i is as follows:

[0042]

[0043] Among them, N1 and N2 are the rotation speeds of the driving gear 41 and the linkage gear 43, d1 and d2 are the diameters of the driving gear 41 and the linkage gear 43, and Z1 and Z2 are the number of teeth of the driving gear 41 and the linkage gear 43. Since both driving gears 41 can mesh with the linkage gear 43, the number of teeth of the driving gear 41 with a larger diameter is greater than that of the driving gear 41 with a smaller diameter.

[0044] Therefore, according to the formula, when the two driving gears 41 rotate at the same speed, the linkage gear 43 meshing with the driving gear 41 with a larger diameter rotates faster than the linkage gear 43 meshing with the driving gear 41 with a smaller diameter. That is, when the driving gear 41 with a larger diameter is installed at the top, the stirring blade 3 at the top rotates faster than the stirring blade 3 at the bottom.

[0045] Compared with the single-speed stirring shaft installed in the existing reactor, the two coaxial dual-speed stirring blades 3 can handle materials of various viscosities and reaction conditions, and have wide adaptability. The dual-speed stirring blade 3 design can provide greater shear force and optimal stirring effect at different reaction stages, thereby improving reaction efficiency.

[0046] In addition to being controlled by a motor, the rotational speed of the two stirring blades 3 can also be adjusted by replacing the driving gear 41. The speed of the stirring blade 3 can be selected according to the specific material. For example, when selecting a material with a higher viscosity, a stronger stirring force is usually required to ensure uniform mixing. In this case, it is preferred to let the lower stirring blade 3 rotate faster so as to more effectively stir and mix the high-viscosity material. If a low-viscosity liquid is selected, it is more effective for the upper stirring blade 3 to rotate faster, because after the stirring blade 3 rotates, flow can be quickly generated and mixing can be promoted. In a gas-liquid reaction, the upper stirring blade 3 rotates faster to help increase the dispersion and mass transfer efficiency of the gas. In a solid-liquid reaction, the lower stirring blade 3 is usually required to provide a stronger rotation speed to ensure the suspension and uniform distribution of solid particles.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the equivalents of the appended claims.

Claims

1. A sealed coaxial dual-speed stirring reactor, characterized in that: include: A cylinder (1) of a reaction kettle, wherein a rotating shaft (2) is rotatably mounted inside the cylinder (1), two mounting frames (11) are fixedly mounted inside the cylinder (1), and the rotating shaft (2) passes through the mounting frames (11); A stirring blade (3), wherein two stirring blades (3) are provided, and the stirring blades (3) are rotatably sleeved on the upper end of the mounting frame (11), and a sealing cover (6) is fixedly sleeved on the outer side wall of the stirring blade (3), and the sealing cover (6) is rotatably sleeved on the upper end of the stirring blade (3); A linkage mechanism (4), the linkage mechanism (4) being located inside the stirring blade (3), the linkage mechanism (4) comprising a driving gear (41), a driven gear (42) and a linkage gear (43), the driving gear (41) being fixedly sleeved on the outer side wall of the rotating shaft (2), the driven gear (42) being rotatably mounted on the mounting frame (11), and the driven gear (42) being meshed with the inner side wall of the stirring blade (3), and the linkage gear (43) being movably mounted on the mounting frame (11); The sliding linkage gear (43) makes the linkage gear (43) mesh with the driving gear (41) and the driven gear (42), the rotation of the rotating shaft (2) drives the driving gear (41) to rotate, and the rotation of the driven gear (42) and the linkage gear (43) makes the stirring blade (3) rotate on the upper end of the mounting frame (11).

2. A sealed coaxial dual-speed stirring reactor according to claim 1, characterized in that: The driven gear (42) and the linkage gear (43) are arranged as a group of linkage parts, and a plurality of linkage parts are arranged in the same stirring blade (3), and the plurality of linkage parts are evenly distributed in a circular array with the rotating shaft (2) as the center.

3. A sealed coaxial dual-speed stirring reactor according to claim 2, characterized in that: A fixing mechanism (5) for connecting the driven gear (42) and the linkage gear (43) is installed at the upper end of the mounting frame (11).

4. A sealed coaxial dual-speed stirring reactor according to claim 3, characterized in that: The fixing mechanism (5) comprises a connecting frame (51), a locking screw (52) and a sliding screw (53); the driven gear (42) and the linkage gear (43) are rotatably mounted on the connecting frame (51); an installation hole matching the screw head of the locking screw (52) and a sliding groove matching the screw head of the sliding screw (53) are provided at the upper end of the mounting frame (11); the rods of the locking screw (52) and the sliding screw (53) both pass through the connecting frame (51); and the ends of the locking screw (52) and the sliding screw (53) extending from the upper end of the connecting frame (51) are both threadedly connected with nuts (54).

5. A sealed coaxial dual-speed stirring reactor according to claim 4, characterized in that: The driving gears (41) of the two linkage mechanisms (4) are set to have different diameters, and the formula of the transmission ratio i is as follows: N1 and N2 are the rotation speeds of the driving gear (41) and the linkage gear (43), d1 and d2 are the diameters of the driving gear (41) and the linkage gear (43), Z1 and Z2 are the number of teeth of the driving gear (41) and the linkage gear (43), and the two driving gears (41) rotate synchronously, and the linkage gear (43) meshing with the driving gear (41) with a larger diameter rotates faster.

6. A sealed coaxial dual-speed stirring reactor according to claim 1, characterized in that: The sealing cover (6) is provided with a sliding hole, in which a pressing block (62) for fixing the sealing cover (6) is slidably installed.

7. A sealed coaxial dual-speed stirring reactor according to claim 6, characterized in that: The outer wall of the sealing cover (6) is threadedly connected with a fixing screw (61), and one end of the fixing screw (61) is rotatably connected to a pressing block (62).

8. A sealed coaxial dual-speed stirring reactor according to claim 7, characterized in that: The pressing block (62) comprises a colloid and a plate body, the fixing screw (61) is rotatably connected to the plate body, and the rubber strip is in contact with the outer side wall of the rotating shaft (2).

9. A sealed coaxial dual-speed stirring reactor according to claim 8, characterized in that: The colloid of the pressing block (62) is set to be made of rubber material, and the plate body of the pressing block (62) is set to be made of metal material.

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