A cellulose ether reactor with a crushing mechanism

Abstract

The present invention relates to the technical field of reactors, and in particular to a cellulose ether reactor with a pulverizing mechanism, comprising an outer shell of the reactor, on which a stirring mechanism for stirring materials and a pulverizing mechanism for pulverizing materials are arranged, the stirring mechanism comprising a stirring shaft extending from top to bottom into the reactor outer shell and stirring blades installed and connected to the stirring shaft, the pulverizing mechanism comprising a transmission shaft extending from top to bottom into the reactor outer shell and a pulverizing assembly connected to the lower end of the transmission shaft and located below the stirring shaft and in a bottom area of ​​the reactor outer shell, so that the stirring effect is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of reactors, in particular to a cellulose ether reactor with a crushing mechanism. Background Art

[0002] The reactor is the core equipment for the production of cellulose ether. Its basic structure consists of a shell, a stirring shaft, a stirring blade, a power and transmission device. Reaction raw materials including refined cotton, liquid alkali, solvent, etc. are all subjected to alkalization and etherification reactions in the reactor. Ideally, the material after the reaction should be a uniform slurry material. Due to objective reasons such as material ratio and stirring degree, granular materials of varying sizes and shapes will be produced during the reaction, and these granular materials will usually settle to the bottom of the reactor.

[0003] The stirring device of a general reactor has limited breaking capacity and cannot completely break up the granular materials, resulting in the production of "raw materials" in the reaction.

[0004] Existing technologies are usually improved in the following two ways: The first is to increase the stirring time. The materials can be fully mixed through long-term stirring. The stirring blades have a certain breaking ability. Long-term stirring can reduce the generation of granular materials.

[0005] Secondly, in order to prevent these raw materials from entering the next production process, a filter is usually added to the discharge pipeline of the reactor to remove these raw materials by filtering. Cleaning the filter requires a lot of manpower and also wastes a lot of raw materials.

[0006] At that time, the above method had a big problem, that is, long-term stirring would waste electricity, and the granular material entering the next process would waste labor and raw materials.

[0007] For example, a Chinese patent with application number 202221048694.2 discloses a stirring transmission system suitable for a large-scale high-viscosity medium reactor, which includes a reactor and a stirring mechanism located in the reactor, the stirring mechanism includes a bearing seat installed at the bottom end of the reactor, the bearing seat is connected to a rotating shaft located in a vertical direction, and the outer peripheral side of the rotating shaft is connected to a plurality of straight blades distributed from top to bottom and located in the reactor; a plum blossom-shaped baffle with a circular arc surface is installed on the inner wall of the reactor, and the plum blossom-shaped baffle does not contact the rotating shaft and the straight blades; a sealing seat is installed at the top of the reactor, and the top of the rotating shaft passes through the reactor and extends to the top of the sealing seat, and a driving mechanism for driving the rotating shaft to rotate is provided on the reactor.

[0008] The reactor involved in the above patent technology has the aforementioned technical problems and needs to be improved. Summary of the invention

[0009] The object of the present invention is to provide a cellulose ether reaction kettle with a pulverizing mechanism and a greatly improved stirring effect.

[0010] The above-mentioned object of the present invention is achieved through the following technical scheme: a cellulose ether reactor with a pulverizing mechanism, comprising an outer shell of the reactor, on which a stirring mechanism for stirring materials and a pulverizing mechanism for pulverizing materials are arranged, the stirring mechanism comprising a stirring shaft extending from top to bottom into the outer shell of the reactor and stirring blades installed and connected to the stirring shaft, the pulverizing mechanism comprising a transmission shaft extending from top to bottom into the outer shell of the reactor and a pulverizing assembly connected to the lower end of the transmission shaft and located below the stirring shaft and in the bottom area of ​​the reactor outer shell.

[0011] As a preferred embodiment of the present invention, the stirring shaft is a hollow shaft and forms a cavity running through the upper and lower parts. The transmission shaft passes through the cavity and is arranged in the stirring shaft, and there is a gap between the transmission shaft and the stirring shaft.

[0012] As a preferred embodiment of the present invention, a motor bracket is fixed to the outer side of the top of the reactor outer shell, a stirring motor is installed and fixed on the motor bracket, the stirring motor has a stirring motor shaft and the lower end of the stirring motor shaft is fixedly connected to the upper end of the stirring shaft, the stirring motor shaft of the stirring motor is also a hollow shaft, a transmission motor is installed and fixed on the upper side of the motor shell of the stirring motor, the transmission motor has a transmission motor shaft and the lower end of the transmission motor shaft is fixedly connected to the upper end of the transmission shaft, the transmission motor shaft and the transmission shaft are connected as a whole through the stirring motor shaft and the transmission motor shaft, and the lower end of the transmission shaft is exposed at the bottom of the stirring shaft.

[0013] As a preferred embodiment of the present invention, the crushing assembly includes a crushing shell with a hollow interior forming a crushing cavity, a slurry inlet pipe and a slurry output pipe connected to the crushing shell, and a crushing movable cutter arranged in the crushing cavity, the crushing movable cutter includes a vertical movable cutter shaft and a movable blade fixed on the outer periphery of the movable cutter shaft, and the upper end of the movable cutter shaft is fixedly connected to the lower end of the transmission shaft.

[0014] As a preferred embodiment of the present invention, the connecting portion between the slurry inlet pipe and the pulverizing shell is located below the pulverizing cavity, and the connecting portion between the slurry outlet pipe and the pulverizing shell is located on the horizontal side of the pulverizing cavity.

[0015] As a preferred embodiment of the present invention, the pulverizing shell is in the shape of a cylindrical box, the pulverizing chamber is in the shape of a cylinder, the slurry inlet pipe includes an ascending feed section connected to the bottom center area of ​​the pulverizing shell, a horizontal feed section connected to the bottom of the ascending feed section and extending horizontally to the left, and an inlet section connected to the horizontal feed section away from one end of the ascending feed section and opening forward, the slurry output pipe includes a horizontal discharge section connected to the horizontal side part of the pulverizing shell and extending horizontally to the right, and an outlet section connected to the horizontal discharge section away from one end of the pulverizing shell and opening forward, the horizontal discharge section is further forward than the horizontal feed section, and the horizontal feed section and the horizontal discharge section are respectively located on the left and right sides of the center line extending front and back of the pulverizing chamber.

[0016] As a preferred embodiment of the present invention, the average diameter of the inlet section is larger than the average diameter of the outlet section, the inlet section is in a forward conical expansion shape, the outlet section is in a forward cylindrical tube shape, the opening of the inlet section is opposite to the direction of rotation of the stirring shaft, and the opening of the outlet section is along the direction of rotation of the stirring shaft.

[0017] As a preferred embodiment of the present invention, a stationary blade extending toward the center along a horizontal radial direction is fixed on the inner side wall of the pulverizing shell at a position close to the upper and lower middle positions, and the stationary blades are distributed in a circular array.

[0018] As a preferred embodiment of the present invention, the moving blades have two groups, each group has three moving blades and are in the same horizontal position, the stationary blade is located between the upper and lower groups of moving blades, the stationary blade is located on the periphery of the moving blade shaft, each group of moving blades has three blades and are distributed in a circular array, the moving blades are curved arc-shaped in the horizontal direction and the bending direction is along the direction of rotation of the stirring shaft.

[0019] As a preferred embodiment of the present invention, a support frame is fixed between the outer peripheral portion of the bottom of the pulverizing shell and the inner side of the bottom of the outer shell of the reactor.

[0020] The beneficial effects of the present invention are as follows: the stirring effect is better, the stirring is more uniform, the granular material at the bottom of the reaction kettle is greatly reduced, and a uniform slurry material is obtained.

[0021] The mixing efficiency is high, labor and raw materials are saved, and production costs are effectively controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front view of the reactor of the embodiment after the front side portion is cut away; Figure 2 for Figure 1 The enlarged view of point I in the middle; Figure 3 for Figure 1 Bottom view of Figure 4 for Figure 3 Magnified view of the middle part. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0025] Examples, such as Figure 1-4 As shown, a cellulose ether reactor with a pulverizing mechanism is characterized in that it includes a reactor outer shell 1, on which a stirring mechanism for stirring materials and a pulverizing mechanism for pulverizing materials are arranged, the stirring mechanism includes a stirring shaft 2 extending from top to bottom into the reactor outer shell 1 and a stirring blade 21 installed and connected to the stirring shaft 2, the pulverizing mechanism includes a transmission shaft 3 extending from top to bottom into the reactor outer shell 1 and a pulverizing assembly connected to the lower end of the transmission shaft 3 and located below the stirring shaft 2 and in the bottom area of ​​the reactor outer shell 1, the reactor outer shell 1, the stirring shaft 2 and the stirring blade 21 can adopt the existing structure, and the feature of the present application lies in the design of the pulverizing mechanism. During the reaction process, there will be a lot of deposited granular materials in the bottom area of ​​the reactor outer shell 1, and the means for solving the problems in the prior art have many of the aforementioned problems, for example, the stirring operation time is too long, it is not energy-saving enough, and the granular materials cannot be completely removed, or the labor cost is high and the raw materials are wasted. The present application uses a newly designed crushing mechanism to remove the granules more effectively, and the crushing assembly is arranged in the bottom area to more centrally crush the granules to blend into the slurry and form a more uniform slurry. Of course, two shaft structures are used here, one is the stirring shaft 2 and the other is the transmission shaft 3. The specific further structural design is as follows.

[0026] The stirring shaft 2 is a hollow shaft and forms a cavity 20 that runs through the top and bottom. The transmission shaft 3 is inserted into the stirring shaft 2 through the cavity 20, and there is a gap between the transmission shaft 3 and the stirring shaft 2. The two shafts are matched by nesting, so that the rotation of the two shafts will not interfere, and they can work together. The specific power structure design is as follows: A motor bracket 4 is fixed on the outside of the top of the reactor shell 1, and the motor bracket 4 can be an existing trapezoidal or conical three-dimensional bracket. A stirring motor 41 is fixed on the motor bracket 4, and the stirring motor 41 has a stirring motor shaft and the lower end of the stirring motor shaft is fixedly connected to the upper end of the stirring shaft 2, so that the power connection of the stirring shaft is formed. For the needs of this application, the stirring motor shaft of the stirring motor 41 is also designed as a hollow shaft, and the stirring motor shaft is located at the center of the motor, and runs through the entire stirring motor from top to bottom, that is, a structure in which the shafts are extended at both ends of the motor, which is mainly for the fusion of the transmission shaft 3 and the stirring shaft 2. Then a transmission motor 42 is fixedly installed on the upper side of the motor shell of the stirring motor 41, and the transmission motor 42 has a transmission motor shaft and the lower end of the transmission motor shaft is fixedly connected to the upper end of the transmission shaft 3, which is the power connection of the transmission shaft. For the fusion of the two shafts, the whole formed by the transmission motor shaft and the transmission shaft 3 is arranged in the whole formed by the stirring motor shaft and the transmission motor shaft, forming a nested structure, and a gap needs to be maintained between the two sets of shafts to avoid problems such as wear. And the lower end of the transmission shaft 3 is exposed at the bottom of the stirring shaft 2. The transmission shaft 3 is exposed from the stirring shaft 2 to avoid interference between the stirring shaft and the crushing assembly. In addition, it is more convenient to install and connect with the crushing assembly, and it has a certain rotation driving effect on the material below. Here, the application needs to optimize the rotation speed. The speed of the conventional cellulose ether reactor is between 50 and 500 rpm. Generally, a faster speed is selected to reduce the granular material, but too fast speed will have the following disadvantages: destroying the material structure. For example, for some sensitive materials, such as cellulose ether, too fast stirring speed may destroy its molecular structure and affect the quality and performance of the product. High-speed stirring will increase the friction between the agitator and the material, and between the agitator and the inner wall of the reactor, resulting in accelerated wear of the equipment, which will not only shorten the service life of the equipment, but also increase the maintenance cost of the equipment. For example, the blades and other components of the agitator are easily damaged under high-speed stirring and need to be replaced frequently. In this embodiment, we can use low-speed stirring, such as 50 to 100 rpm. So the above-mentioned disadvantages can be greatly avoided. However, at a slow stirring speed, granular materials will be produced relatively more. However, with the crushing mechanism, this problem can be solved well, so that both problems can be effectively solved. The speed of the transmission shaft 3 needs to be high, generally more than 500 rpm, and can be controlled at about 1000 rpm, for the needs of crushing, but the crushing component itself accounts for a small proportion, even if it is broken, it is easy to replace and maintain, the cost is relatively low, and the crushing component is a small-scale operation with little impact, and the internal structure adopts the following special structural design, which causes less damage to the equipment itself and the material, and what is crushed is the granular material of the final material after the reaction at the bottom, and the chemical impact of the crushing is small, mainly to crush it into fine material, which is basically a physical change.

[0027] Preferably, the pulverizing assembly comprises a pulverizing shell 5 with a hollow interior forming a pulverizing cavity 50, a slurry inlet pipe 51 and a slurry outlet pipe 52 connected to the pulverizing shell 5, and a pulverizing movable cutter arranged in the pulverizing cavity 50, wherein the pulverizing movable cutter comprises a vertical movable cutter shaft 531 and a movable blade 532 fixed on the outer peripheral portion of the movable cutter shaft 531, and the upper end of the movable cutter shaft 531 is fixedly connected to the lower end of the transmission shaft 3. The volume of the pulverizing shell 5 is designed to be relatively small relative to the volume of the reactor outer shell 1, and the volume of the pulverizing shell 5 is preferably less than one-fiftieth of the volume of the reactor outer shell 1, and is preferably controlled within one-hundredth to one-fiftieth. The slurry inlet pipe 51 and the slurry outlet pipe 52 are for the finished material at the bottom of the reactor to enter, and then, the uneven slurry of many particles gathered therein is pulverized so that the overall slurry without particles is more uniformly output. The pulverization of the particles in the material is completed by the pulverizing movable cutter, and the movable blade 532 rotates in a horizontal plane to achieve pulverization. The main body of the movable blade shaft 531 is inside the pulverizing shell 5 .

[0028] Furthermore, the connection part between the slurry inlet pipe 51 and the pulverizing shell 5 is located below the pulverizing chamber 50, and the connection part between the slurry outlet pipe 52 and the pulverizing shell 5 is located on the horizontal side of the pulverizing chamber 50. Therefore, the preferred feature here is that the feed is fed upward from the bottom of the pulverizing shell 5, and the discharge is discharged from the upper side of the pulverizing shell 5, thus forming a channel for feeding and discharging materials. That is, the interface where the slurry inlet pipe 51 and the pulverizing shell 5 are connected is located at the bottom, and the interface where the slurry outlet pipe 52 and the pulverizing shell 5 are connected is located at the upper side.

[0029] Furthermore, the pulverizing shell 5 is in the shape of a cylindrical box, the pulverizing chamber 50 is in the shape of a cylinder, the slurry inlet pipe 51 includes an ascending feed section 511 connected to the bottom center area of ​​the pulverizing shell 5, a horizontal feed section 512 connected to the bottom of the ascending feed section 511 and extending horizontally to the left, and an inlet section 513 connected to one end of the horizontal feed section 512 away from the ascending feed section 511 and opening forward, and the pulverizing shell 5 and the slurry inlet pipe 51 can be made of metal, such as a steel structure. The ascending feed section 511 can be cylindrical or approximately cylindrical, with the upper end connected and connected to the bottom center area of ​​the pulverizing shell 5, the lower end of the ascending feed section 511 is connected and connected to the right end of the horizontal feed section 512, and the left end of the horizontal feed section 512 is connected and connected to the rear end of the inlet section 513, and the inlet section 513 extends forward and backward and its front side opening serves as the inlet of the material. The slurry output pipeline 52 includes a horizontal discharge section 521 connected to the horizontal side of the pulverizing shell 5 and extending horizontally to the right, and an outlet section 522 opened forward and connected to one end of the horizontal discharge section 521 away from the pulverizing shell 5. The left end of the horizontal discharge section 521 is connected and connected to the outer peripheral part of the horizontal side of the right half of the pulverizing shell 5, and the right end of the horizontal discharge section 521 is connected and connected to the rear end of the outlet section 522. The outlet section 522 extends forward and backward and its front opening serves as the outlet of the material. That is, the feed port and the discharge port are both facing forward. The left and right front and back relationship here is relative, and is the direction determined by observing from the perspective of the entrance of the entrance section 513 as the front side perspective. Further, the horizontal discharge section 521 is more forward than the horizontal feed section 512, and the horizontal feed section 512 and the horizontal discharge section 521 are respectively located on the left and right sides of the center line extending forward and backward of the pulverizing chamber 50. The material enters the crushing shell 5 from bottom to top and is crushed and rotated at the same time. Because the movable blade 532 is driven by the movable blade shaft 531 to rotate and crush, there is a front-to-back position difference between the horizontal discharge section 521 and the horizontal feed section 512, so that the material can be crushed for a longer time before being output instead of being output immediately, and the crushing efficiency will be higher.

[0030] Preferably, the average diameter of the inlet section 513 is larger than the average diameter of the outlet section 522. The inlet section 513 is in a forward conical expansion shape, and the outlet section 522 is in a forward cylindrical shape. The opening size is designed so that the flux of material entering is greater than the flux of material output, which can ensure that the crushing shell 5, the slurry inlet pipe 51 and the slurry output pipe 52 are full of materials, and the material propulsion effect of a parallel channel, that is, the driving force formed by more material entering will make the material better crushed and output. In order to better realize the crushing method, the following design is further made: the opening of the inlet section 513 is opposite to the direction of rotation of the stirring shaft, and the opening of the outlet section 522 is along the direction of rotation of the stirring shaft, that is, the stirring shaft rotates in the opposite direction, and the material also rotates and flows in the opposite direction of the opening of the inlet section 513, that is, the material rushes toward the opening of the inlet section 513, and can better rush into the inlet section 513, and then enter the entire slurry into the pipeline 51 and then into the crushing shell 5, and is crushed and output from the outlet section 522, and the opening of the outlet section 522 is along the stirring direction and the material flow direction, so the output material can better integrate into the external material flow trend and will not cause obstruction. Such a design is very compliant with fluid mechanics, and a material input and output flow system is formed on the system where the slurry inlet pipeline 51, the crushing shell 5 and the slurry output pipeline 52 are connected, and the granular material in the slurry can be effectively crushed.

[0031] Furthermore, a stationary blade 6 extending along the horizontal radial extension toward the center is fixed on the inner side wall of the pulverizing shell 5 at a position close to the middle of the upper and lower parts. The stationary blade 6 is distributed in a circular array. The stationary blade and the pulverizing shell 5 are both stationary. The stationary blade 6 is a straight-line tool and is distributed in four positions, front, back, left, and right. That is, the stationary blade 6 has four and is in the same horizontal position. The stationary blade 6 can be a blade portion on both sides of the horizontal circumference. For example, the stationary blade 6 on the left side has a blade portion on both sides of the front and back. Of course, the upper and lower sides of the stationary blade 6 can also be a blade portion. In this case, the cross-section of this blade is rhombus-shaped, and the sharp corners of the upper and lower front and back are all blade portions. This effect is better. Of course, a rectangular blade can also be used, and the blade portions are at the four corners of the front upper, rear upper, front lower, and rear lower as blade portions.

[0032] Furthermore, the movable blades 532 have two groups, one above the other, each group of movable blades 532 has three movable blades and are at the same horizontal position, the static blade 6 is located between the upper and lower groups of movable blades 532, the static blade 6 is located on the periphery of the movable blade shaft 531, each group of movable blades 532 has three blades and are distributed in a circular array on the horizontal plane, the movable blades 532 are curved in the horizontal direction and the bending direction is along the direction of rotation of the stirring shaft. The rotation direction of the rotating shaft can preferably be consistent with the rotation direction of the stirring shaft, so the rotation direction of the movable blade shaft 531 is also consistent. For example, if the stirring shaft rotates counterclockwise, the movable blade 532 starts to bend counterclockwise from the movable blade shaft 531. This has the advantage that the material enters the crushing shell 5 from bottom to top, and the curved and concave side of the movable blade 532 wraps the material for shearing and crushing, and cooperates with the static blade for better crushing. And the overall diameter of the rising feed section 511 can be set smaller, which can be similar to the diameter of the moving blade shaft 531. In particular, the size of the connection port connecting the upper end of the rising feed section 511 to the pulverizing shell 5 is preferably smaller than one-fourth of the diameter of the pulverizing chamber 50, and it is appropriate to control it to about one-seventh. The advantage of this is that the rising material impacts a smaller area of ​​the blade, basically the area that impacts the moving blade shaft 531, and there is almost no damage to the blade. Basically, the upper and lower overlaps and impacts the blade. Since it is in the up and down direction, the impact is also small. If the material is fed from the side, it is different. On the one hand, the material wrapping and cutting effect is not good enough. On the other hand, the material will impact the curved and arched side of the moving blade 532, which still has a significant impact on the moving blade, and it will hinder the feeding and feeding, and the pulverizing effect is not good. It is not conducive to the formation of negative pressure, and the material cannot be well sucked in and discharged. In addition, a certain distance is kept between the lower group of moving blades 532 and the bottom of the pulverizing shell 5 to facilitate the upward movement and shearing of the material. In addition, the spacing between the top of the pulverizing shell 5 and the upper group of moving blades 532, the spacing between the upper group of moving blades 532 and the stationary blade 6, the spacing between the stationary blade 6 and the lower group of moving blades 532, and the spacing between the lower group of moving blades 532 and the bottom of the pulverizing shell 5 are kept consistent as much as possible, and preferably do not differ by more than one time. In addition, although the moving blade 532 is in a curved arc shape, its cross section can still be in a rhombus shape. Here, the shape of the cross section is observed from a horizontal perspective, that is, the upper and lower sides and the curved concave side and arched side are all blade portions.

[0033] Through the above design, the granular materials deposited near the bottom of the reactor are allowed to enter the crushing assembly along with the slurry materials through the stirring rotation and the self-absorption ability of the crushing assembly itself. The crushing assembly crushes the granular materials and then discharges them into the reactor along with the slurry materials.

[0034] Preferably, a support frame 11 is fixed between the outer peripheral portion of the bottom of the pulverizing shell 5 and the inner side of the bottom of the reactor outer shell 1. The support frame 11 can be an existing trapezoidal steel bracket or a support structure composed of multiple oblique support rods, etc., to ensure the stability of the pulverizing shell 5. It is preferable to use an existing detachable fixing method for easy replacement and maintenance.

[0035] The part of the transmission shaft 3 exposed from the stirring shaft 2 is mentioned above for installation connection with the crushing assembly, that is, for fixed connection with the moving blade shaft 531. The lower part of the exposed part of the transmission shaft 3 is in an inverted cone shape and is used to be fixedly connected with the upper end of the moving blade shaft 531. The transmission shaft 3 is still cylindrical as a whole, that is, the lower part is preferably in an inverted cone shape. Especially at high speed operation, the axial load of the transmission shaft will produce a large radial torque and a small tangential torque, and the conical connection can withstand these two torques. The conical connection can provide good positioning accuracy and synchronization, which is of great help to the running stability of the motor, reducing power consumption and noise, etc. In addition, the conical connection can improve the torque and power transmission capacity of the transmission while making the axial and radial loads more evenly distributed.

[0036] In addition, when the crushing assembly is designed, the upper end of the moving blade shaft 531 is designed to exceed the top of the crushing shell 5, so as to facilitate the fixation with the transmission shaft 3. The crushing shell 5 can be designed as a split structure. For example, the crushing shell 5 is composed of a top cover and a semi-enclosed shell with an upper opening. A sealed bearing can be nested and fixed on the top cover. The moving blade shaft 531 is suspended and installed in the sealed bearing and a part of the upper end is exposed upward from the top cover. The moving blade can be fixed to the moving blade shaft 531 in advance by an existing method, and then the exposed part of the moving blade shaft 531 and the tapered part of the transmission shaft 3 are fixedly connected by an existing method. Then, the semi-enclosed shell and the top cover are fixedly installed at the peripheral part to form a complete crushing shell 5. For further stability, the bottom of the semi-enclosed shell is fixedly connected to the bottom of the reactor by a support frame 11. Of course, other installation structures and installation sequences can be used to achieve this.

[0037] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A cellulose ether reactor with a pulverizing mechanism, characterized in that: The invention comprises a reactor outer shell (1), wherein the reactor outer shell (1) is provided with a stirring mechanism for stirring materials and a pulverizing mechanism for pulverizing materials, wherein the stirring mechanism comprises a stirring shaft (2) extending from top to bottom into the reactor outer shell (1) and a stirring blade (21) mounted and connected to the stirring shaft (2), and the pulverizing mechanism comprises a transmission shaft (3) extending from top to bottom into the reactor outer shell (1) and a pulverizing component connected to the lower end of the transmission shaft (3) and located below the stirring shaft (2) and in a bottom area of ​​the reactor outer shell (1).

2. The cellulose ether reactor with a pulverizing mechanism according to claim 1, characterized in that: The stirring shaft (2) is a hollow shaft and forms a cavity (20) that penetrates from top to bottom. The transmission shaft (3) is arranged in the stirring shaft (2) through the cavity (20), and a gap is provided between the transmission shaft (3) and the stirring shaft (2).

3. The cellulose ether reaction kettle with a pulverizing mechanism according to claim 2, characterized in that: A motor bracket (4) is fixed to the outer side of the top of the reactor outer shell (1), and a stirring motor (41) is fixedly mounted on the motor bracket (4). The stirring motor (41) has a stirring motor shaft, and the lower end of the stirring motor shaft is fixedly connected to the upper end of the stirring shaft (2). The stirring motor shaft of the stirring motor (41) is also a hollow shaft. A transmission motor (42) is fixedly mounted on the upper side of the motor shell of the stirring motor (41), and the transmission motor (42) has a transmission motor shaft, and the lower end of the transmission motor shaft is fixedly connected to the upper end of the transmission shaft (3). The transmission motor shaft and the transmission shaft (3) are connected as a whole and are inserted into the whole formed by the stirring motor shaft and the transmission motor shaft, and the lower end of the transmission shaft (3) is exposed at the bottom of the stirring shaft (2).

4. The cellulose ether reaction kettle with a pulverizing mechanism according to claim 2, characterized in that: The pulverizing assembly comprises a pulverizing shell (5) whose interior is hollow and forms a pulverizing cavity (50), a slurry inlet pipe (51) and a slurry outlet pipe (52) connected to the pulverizing shell (5), and a pulverizing movable blade arranged in the pulverizing cavity (50), wherein the pulverizing movable blade comprises a vertical movable blade shaft (531) and a movable blade (532) fixed to the outer periphery of the movable blade shaft (531), and the upper end of the movable blade shaft (531) is fixedly connected to the lower end of the transmission shaft (3).

5. The cellulose ether reaction kettle with a pulverizing mechanism according to claim 4, characterized in that: The communicating portion between the slurry inlet pipe (51) and the pulverizing shell (5) is located below the pulverizing chamber (50), and the communicating portion between the slurry outlet pipe (52) and the pulverizing shell (5) is located horizontally to the side of the pulverizing chamber (50).

6. The cellulose ether reaction kettle with a pulverizing mechanism according to claim 5, characterized in that: The pulverizing shell (5) is in the shape of a cylindrical box, the pulverizing chamber (50) is in the shape of a cylinder, the slurry inlet pipe (51) comprises an ascending feed section (511) connected to the central area of ​​the bottom of the pulverizing shell (5), a horizontal feed section (512) connected to the bottom of the ascending feed section (511) and extending horizontally to the left, and an inlet section (513) connected to the end of the horizontal feed section (512) away from the ascending feed section (511) and opening forward, and the slurry outlet pipe (52) comprises a horizontal discharge section (521) connected to the horizontal side portion of the pulverizing shell (5) and extending horizontally to the right, and an outlet section (522) opened forward and connected to one end of the horizontal discharge section (521) away from the pulverizing shell (5), the horizontal discharge section (521) being further forward than the horizontal feed section (512), and the horizontal feed section (512) and the horizontal discharge section (521) are respectively located on the left and right sides of a center line extending forward and backward of the pulverizing chamber (50).

7. The cellulose ether reaction kettle with a pulverizing mechanism according to claim 6, characterized in that: The average caliber of the inlet section (513) is greater than the average caliber of the outlet section (522); the inlet section (513) is in a forward conical expansion shape, and the outlet section (522) is in a forward cylindrical tube shape; the opening of the inlet section (513) is opposite to the direction of rotation of the stirring shaft, and the opening of the outlet section (522) is along the direction of rotation of the stirring shaft.

8. The cellulose ether reactor with a pulverizing mechanism according to claim 6, characterized in that: A stationary blade (6) extending in a horizontal radial direction toward the center is fixed on the inner side wall of the pulverizing shell (5) at a position close to the upper and lower middle positions, and the stationary blades (6) are distributed in a circular array.

9. The cellulose ether reaction kettle with a pulverizing mechanism according to claim 6, characterized in that: The movable blades (532) have two upper and lower groups, each group of movable blades (532) has three blades and are located at the same horizontal position, the stationary blade (6) is located between the upper and lower groups of movable blades (532), the stationary blade (6) is located on the periphery of the movable blade shaft (531), each group of movable blades (532) has three blades and are distributed in a circular array, and the movable blades (532) are curved in the horizontal direction and the curvature direction is along the rotation direction of the stirring shaft.

10. The cellulose ether reactor with a pulverizing mechanism according to claim 6, characterized in that: A support frame (11) is fixed between the outer peripheral portion of the bottom of the pulverizing shell (5) and the inner side of the bottom of the reactor outer shell (1).

Images