CN210915897U - Polymerization device for preparing polylactic acid - Google Patents

Abstract

The utility model provides a polymerization device for preparing polylactic acid, which belongs to the technical field of polymer devices made of high polymer materials and aims to solve the problems that the polymerization reaction is locally nonuniform, condensate is possibly generated and impurities are generated due to the fact that materials cannot be timely mixed and contacted in the polymerization reaction of the existing polymerization device in the using process, and comprises a bottom frame; the upper end of the bottom frame is fixedly provided with a mixing mechanism; and the bottom of the left end of the mixing mechanism is fixedly connected with a stirring mechanism. The utility model discloses in because invert on the right-hand member lateral wall of mixing mechanism and install servo motor, the right-hand member of the screw of rear end is rotated with servo motor through the speed reducer and is connected, and the left end of screw all is provided with drive gear, and two drive gear intermeshing, and the screw of rear end be close to left end department fixed mounting have the helical gear when the raw materials from the feed inlet add the back, can mix and carry in the effect of two screws.

Description

Polymerization device for preparing polylactic acid

Technical Field

The utility model belongs to the technical field of macromolecular material's polymer device, more specifically say, in particular to a polymerization facility for preparing polylactic acid.

Background

Polylactic acid is a novel degradable polymer material which is finally polymerized by adopting renewable starch or glucose as an initial raw material through a plurality of preparation processes.

For example, patent application CN200920043052.1 discloses a polymerization device for preparing polylactic acid, which belongs to the technical field of polymer devices for high molecular materials. Have the feed inlet and the other end has the barrel of discharge gate including one end, be equipped with the spacer sleeve outside the barrel and along the length direction of barrel, constitute between the inner wall of spacer sleeve and the outer wall of barrel and separate the chamber, have one and separate the communicating heat medium of chamber and introduce the interface in the one end of spacer sleeve, the other end of spacer sleeve has one and separates the communicating heat medium of chamber and draw forth the interface, wherein: the position of the heat medium leading-in interface on the spacer sleeve corresponds to one end of the feed inlet, and the position of the heat medium leading-out interface on the spacer sleeve corresponds to one end of the discharge outlet. The advantages are that: the energy is saved and the utilization rate of equipment is improved; the polymer can be prevented from being disconnected, so that the temperature consistency and the molecular weight consistency of the polymer are ensured; can satisfy the heat exchange area of the polymer and can ensure the consistency of the heat history of the polymer.

When the existing polymerization device is used, materials cannot be timely mixed and contacted during polymerization reaction, so that the local non-uniformity phenomenon of the polymerization reaction occurs, and condensate and impurities may occur.

In view of the above, the present invention provides a polymerization apparatus for preparing polylactic acid, which is improved in view of the conventional structure and defects, so as to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a polymerization facility for preparing polylactic acid to solve current polymerization facility in the use, during polymerization reaction, because the material can not timely mix the contact, cause polymerization reaction to appear local nonuniform phenomenon, the cured object probably appears, the problem of impurity appears.

The utility model is used for the purpose and the efficiency of the polymerization device for preparing polylactic acid are achieved by the following concrete technical means:

a polymerization apparatus for preparing polylactic acid, comprising a base frame; the upper end of the bottom frame is fixedly provided with a mixing mechanism; and the bottom of the left end of the mixing mechanism is fixedly connected with a stirring mechanism.

Further, the mixing mechanism still includes feed inlet, servo motor, screw, drive gear and helical gear, invert on the right-hand member lateral wall of mixing mechanism and install servo motor, the feed inlet of rectangle is seted up at mixing mechanism's right-hand member top, transverse rotation is connected with two screws that are parallel to each other in the mixing mechanism, the rear end the right-hand member of screw rotates with servo motor through the speed reducer and is connected, the left end of screw all is provided with drive gear, and two drive gear intermeshing, the rear end the screw be close to left end department fixed mounting and have the helical gear.

Further, rabbling mechanism still includes (mixing) shaft, discharging pipe, screw thread, stirring rake and broken tooth, the vertical left end that passes mixing mechanism of rabbling mechanism's (mixing) shaft, the lower extreme fixedly connected with stirring rake of (mixing) shaft, the bottom central authorities fixedly connected with discharging pipe of rabbling mechanism.

Furthermore, the middle part of the stirring shaft is provided with a thread at the position corresponding to the propeller, and the helical gear is meshed with the thread part on the stirring shaft.

Furthermore, two crushing teeth are arranged in the middle of the upper end of the paddle of the stirring paddle.

Compared with the prior art, the utility model discloses following beneficial effect has:

because the servo motor is installed on inverting on the right-hand member lateral wall of mixing mechanism, the rectangular feed inlet is seted up at mixing mechanism's right-hand member top, the horizontal rotation is connected with two propellers that are parallel to each other in the mixing mechanism, the right-hand member of the propeller of rear end is rotated with servo motor through the speed reducer and is connected, the left end of propeller all is provided with drive gear, and two drive gear intermeshing, the near left end department fixed mounting of the propeller of rear end has the helical gear to mix and carry when the raw materials adds the back from the feed inlet.

Because the vertical left end that passes mixing mechanism of rabbling mechanism's (mixing) shaft, the lower extreme fixedly connected with stirring rake of (mixing) shaft, the bottom central authorities fixedly connected with discharging pipe of rabbling mechanism, after the raw materials mixes, can carry out the quick polymerization of material under the effect of rabbling mechanism, and the middle part and the corresponding department in screw position of (mixing) shaft set up the screw thread, and helical gear meshes with the epaxial screw thread portion phase-splitting of stirring, when the screw pivoted, the (mixing) shaft also can carry out synchronous rotation, energy saving, and two broken teeth have all been seted up at the upper end middle part of the paddle of stirring rake, can refine the breakage.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic diagram of the right front upper axial view structure of the present invention.

Fig. 2 is a schematic view of the upper left rear side of the present invention.

Fig. 3 is a schematic view of the left rear lower axial view structure of the present invention.

Fig. 4 is a schematic view of the shell removal state of the present invention.

Fig. 5 is a schematic axial view of the housing of the present invention in a removed state.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a chassis; 2. a mixing mechanism; 201. a feed inlet; 202. a servo motor; 203. a propeller; 204. a transmission gear; 205. a helical gear; 3. a stirring mechanism; 301. a stirring shaft; 302. a discharge pipe; 303. a thread; 304. a stirring paddle; 305. the teeth are broken.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 5:

the utility model provides a polymerization device for preparing polylactic acid, which comprises a bottom frame 1; the upper end of the chassis 1 is fixedly provided with a mixing mechanism 2; the bottom of the left end of the mixing mechanism 2 is fixedly connected with a stirring mechanism 3.

The mixing mechanism 2 further comprises a feeding hole 201, a servo motor 202, propellers 203, transmission gears 204 and bevel gears 205, the servo motor 202 is arranged on the side wall of the right end of the mixing mechanism 2 in an inverted mode, the rectangular feeding hole 201 is formed in the top of the right end of the mixing mechanism 2, the two propellers 203 which are parallel to each other are connected in the mixing mechanism 2 in a transverse rotating mode, the right end of the propeller 203 at the rear end is connected with the servo motor 202 in a rotating mode through a speed reducer, the transmission gears 204 are arranged at the left ends of the propellers 203, the two transmission gears 204 are meshed with each other, the bevel gears 205 are fixedly arranged at the positions, close to the left end, of the propeller 203 at the rear end, and after raw materials are added.

Wherein, rabbling mechanism 3 still includes (mixing) shaft 301, discharging pipe 302, screw 303, stirring rake 304 and broken tooth 305, and the vertical left end that passes mixing mechanism 2 of (mixing) shaft 301 of rabbling mechanism 3, the lower extreme fixedly connected with stirring rake 304 of (mixing) shaft 301, the central fixedly connected with discharging pipe 302 in bottom of rabbling mechanism 3, after the raw materials mixes, can carry out the material rapid polymerization under the effect of rabbling mechanism 3.

Wherein, the middle part of the stirring shaft 301 is provided with a thread 303 corresponding to the position of the propeller 203, and the helical gear 205 is meshed with the thread 303 on the stirring shaft 301, when the propeller 203 rotates, the stirring shaft 301 can also synchronously rotate, thereby saving energy.

Wherein, two crushing teeth 305 are arranged in the middle of the upper end of the paddle of the stirring paddle 304, so that the material can be thinned and crushed.

The specific use mode and function of the embodiment are as follows:

when the material mixing device is used, materials are added from a feeding hole 201 in the mixing mechanism 2, a servo motor 202 is inversely installed on the side wall of the right end of the mixing mechanism 2, the rectangular feeding hole 201 is formed in the top of the right end of the mixing mechanism 2, two parallel propellers 203 are transversely and rotatably connected in the mixing mechanism 2, the right end of the propeller 203 at the rear end is rotatably connected with the servo motor 202 through a speed reducer, transmission gears 204 are arranged at the left ends of the propellers 203, the two transmission gears 204 are mutually meshed, and a bevel gear 205 is fixedly installed at the left end, close to the left end of the propeller 203 at the rear end, and can be mixed and conveyed under the action of the two propellers 203 after the raw materials;

and the vertical left end that passes mixing mechanism 2 of (mixing) shaft 301 of rabbling mechanism 3, the lower extreme fixedly connected with stirring rake 304 of (mixing) shaft 301, the bottom central authorities fixedly connected with discharging pipe 302 of rabbling mechanism 3, after the raw materials mixes, can carry out the quick polymerization of material under the effect of rabbling mechanism 3, and screw 303 has been seted up with the corresponding department in screw 203 position in the middle part of (mixing) shaft 301, and helical gear 205 meshes with the screw 303 part on the (mixing) shaft 301 mutually, when screw 203 pivoted, stirring shaft 301 also can carry out synchronous rotation, and energy saving, and two broken tooth 305 have all been seted up in the upper end middle part of the paddle of stirring rake 304, can refine the breakage with the material.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (4)

1. A polymerization apparatus for producing polylactic acid, characterized in that: comprises a chassis (1); the upper end of the bottom frame (1) is fixedly provided with a mixing mechanism (2); the bottom of the left end of the mixing mechanism (2) is fixedly connected with a stirring mechanism (3); mixing mechanism (2) still includes feed inlet (201), servo motor (202), screw (203), drive gear (204) and helical gear (205), invert on the right-hand member lateral wall of mixing mechanism (2) and install servo motor (202), feed inlet (201) of rectangle is seted up at the right-hand member top of mixing mechanism (2), transverse rotation is connected with two screw (203) that are parallel to each other in mixing mechanism (2), the rear end the right-hand member of screw (203) is rotated with servo motor (202) through the speed reducer and is connected, the left end of screw (203) all is provided with drive gear (204), and two drive gear (204) intermeshing, the rear end the left end department that is close to of screw (203) fixed mounting has helical gear (205).

2. The polymerization apparatus for preparing polylactic acid according to claim 1, wherein: rabbling mechanism (3) still include (mixing) shaft (301), discharging pipe (302), screw thread (303), stirring rake (304) and broken tooth (305), the left end of mixing mechanism (2) is vertically passed in (mixing) shaft (301) of rabbling mechanism (3), the lower extreme fixedly connected with stirring rake (304) of (mixing) shaft (301), the bottom central authorities fixedly connected with discharging pipe (302) of rabbling mechanism (3).

3. The polymerization apparatus for preparing polylactic acid according to claim 2, wherein: the middle part of the stirring shaft (301) is provided with a thread (303) at the position corresponding to the propeller (203), and the helical gear (205) is meshed with the thread (303) on the stirring shaft (301).

4. The polymerization apparatus for preparing polylactic acid according to claim 2, wherein: two crushing teeth (305) are arranged in the middle of the upper end of each blade of the stirring paddle (304).

Images