Equipment for preparing polylactic acid transparent toughening agent

Abstract

The invention particularly relates to equipment for preparing a polylactic acid transparent flexibilizer, and relates to the technical field of high polymer material processing equipment.The equipment comprises a movable frame body, a lower double-ring sleeve is installed on the upper side of the movable frame body and used for containing materials, and an upper double-ring sleeve is embedded into the inner wall of the upper side of the lower double-ring sleeve in a sliding mode to seal a whole inner cylinder cavity; the heating plates are arranged at the bottom of the inner wall of the lower double-ring sleeve, the upper double-ring sleeve is in a hovering state after being downwards embedded into the lower double-ring sleeve, the heating plates are located below the upper double-ring sleeve at intervals, and the two sleeve cavities have different mixing states and are in a separated state. A protruding sealing block is arranged at the bottom, and when the lower double-ring sleeve and the upper double-ring sleeve are combined, that is, the lifting assembly drives the upper double-ring sleeve to move downwards so that the protruding sealing block can be tightly plugged in the middle and the bottom face of the lower double-ring sleeve, the inner side of the lower double-ring sleeve can be divided into two independent sleeve cavities for independent mixing and stirring.

Description

Technical Field

[0001] The present invention specifically relates to a device for preparing a transparent toughening agent for polylactic acid, and relates to the technical field of polymer material processing equipment. Background Art

[0002] In the process of preparing polylactic acid transparent toughening agent, stirring and mixing is an extremely critical step. As a basic material, polylactic acid needs to be fully mixed with various auxiliary agents and additives to ensure that the performance of the toughening agent meets expectations. The uniform mixing of different raw materials at the molecular level can promote the formation of a stable microstructure, which has a positive effect on the transparency and toughness of polylactic acid. For example, some special functional additives may need to be evenly dispersed in the polylactic acid matrix to play their role in improving toughness and transparency. If the stirring and mixing is not sufficient, it may cause local enrichment or uneven dispersion of the additives, thereby affecting the overall performance of the toughening agent; however, the equipment currently used in this preparation process often only uses simple stirring blades for mixing during mixing. This single structure is difficult to cope with complex mixing requirements, and simple stirring blades cannot meet such diverse requirements, resulting in poor mixing effects; in actual production, sometimes it is necessary to separate and mix certain raw materials first, and then blend them after reaching a specific state. However, the existing equipment does not have the ability to separate or blend according to the use requirements, which limits the flexibility of the production process and cannot achieve a more refined production process. In particular, the polylactic acid needs to be mixed separately. After the acid is mixed evenly with a premix separately, it is blended with other additives, but the existing equipment is difficult to achieve this step-by-step mixing operation; at the same time, during the blending process, different production scales or product formulas may require different equipment capacities, but the existing equipment cannot adjust the equipment capacity accordingly according to the demand. When producing small batches of special specification products, excessive equipment capacity may lead to waste of raw materials and uneven mixing; and when it is necessary to expand the production scale, the equipment capacity is too small to meet the production needs. This situation in which the capacity cannot be flexibly adjusted seriously affects the use effect and production efficiency of the equipment. Therefore, it is necessary to propose a device for preparing a polylactic acid transparent toughening agent to improve the above problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a device for preparing a transparent toughening agent for polylactic acid to solve the problems mentioned in the above background technology.

[0004] In order to achieve the above object, the present invention is realized by the following technical scheme: an apparatus for preparing a transparent toughening agent of polylactic acid, comprising a mobile frame body, on the upper side of which a lower double-ring sleeve is installed for holding materials, and an upper double-ring sleeve is slidably embedded in the inner wall of the upper side of the lower double-ring sleeve to seal the entire inner cylinder cavity; A heating plate is arranged at the bottom of the inner wall of the lower double-ring sleeve. The upper double-ring sleeve is inserted downward into the lower double-ring sleeve and is in a suspended state, and the heating plate is spaced below the upper double-ring sleeve; A lifting assembly is arranged on the upper side of the upper double-ring sleeve and connected to the outer side of the lower double-ring sleeve to realize the lifting and lowering of the upper double-ring sleeve; The retaining wall is integrally arranged in the middle of the inner side of the upper double-ring sleeve, and a raised closing block is provided at the bottom of the retaining wall, and the raised closing block is adapted to be plugged tightly in the middle and bottom of the inner side of the lower double-ring sleeve; when the upper double-ring sleeve moves downward, the raised closing block is driven to be plugged tightly in the middle and bottom of the lower double-ring sleeve, thereby dividing the inner side of the lower double-ring sleeve into two separate barrel cavities for mixing and stirring; when the upper double-ring sleeve moves upward, the raised closing block is driven to be separated from the middle and bottom of the lower double-ring sleeve, so that the materials of the two barrel cavities are blended; An upper stirring assembly is installed in the middle of the upper double-ring sleeves corresponding to the upper sides of the two barrel cavities, and a lower stirring assembly is installed in the middle of the lower double-ring sleeves corresponding to the lower sides of the two barrel cavities.

[0005] A further improvement based on the above technical solution is that the upper stirring assembly includes an upper rotating shaft rod rotatably installed on the inner side of an upper double-ring sleeve, and the upper rotating shaft rod is equipped with multiple first stirring blades, the upper rotating shaft rods of the two upper stirring assemblies are connected by a transmission belt, and an upper stirring motor is installed on the top of the upper double-ring sleeve for driving one of the upper rotating shaft rods to rotate.

[0006] A further improvement based on the above technical solution is that the lower stirring assembly includes a lower rotating shaft rod rotatably installed on the inner side of the lower double-ring sleeve, the lower rotating shaft rods of the two lower stirring assemblies are connected by a transmission belt, a second stirring blade is installed in the middle of the lower rotating shaft rod, a lower stirring motor for driving the lower rotating shaft rod to rotate is installed on the lower side of the lower double-ring sleeve, a bearing is installed on the top of the lower rotating shaft rod, and a rotating plug rod is rotatably installed in the middle of the bearing, and the rotating plug rod is movably inserted through the middle of the bottom end of the upper rotating shaft rod.

[0007] A further improvement based on the above technical solution is that an inclined scraper is obliquely installed on the lower side of the lower rotating shaft rod, and the bottom of the inclined scraper is in a pointed shape and abuts against the inner bottom surface of the lower double-ring sleeve.

[0008] A further improvement based on the above technical solution is that it also includes an airtight convex edge, which is fixed to the outer edge of the top opening of the lower double-ring sleeve, and an inner groove is opened on the inner side of the airtight convex edge, and a rubber airbag ring is embedded on the inner side of the inner groove. The rubber airbag ring is in close contact with the outer surface of the upper double-ring sleeve, and the mobile frame body is equipped with an air pump, and the air pump is connected to the rubber airbag ring through an air pipe.

[0009] A further improvement based on the above technical solution is that a rubber convex ring is fixedly provided on the bottom opening edge of the upper double-ring sleeve, and is in close contact with the outer surface of the lower double-ring sleeve or the rubber airbag ring through the rubber convex ring.

[0010] A further improvement based on the above technical solution is that two connecting pipes are installed in the middle of the raised closing block, and electric valves are installed at both ends of the connecting pipes respectively. Two submersible pumps are installed on the inside of the raised closing block, and the feed end and the discharge end of the submersible pump are respectively connected to the two ends of the connecting pipes, and a layer of sealing gasket is compounded on the outer surface of the raised closing block.

[0011] A further improvement based on the above technical solution is that the lifting assembly includes a screw rod vertically mounted on the outside of the upper double-ring sleeve, a lifting motor for driving the screw rod to rotate is installed on the top of the upper double-ring sleeve, two screw rods are provided, and they are connected by a transmission belt, and external connecting blocks are respectively installed on the front and rear sides of the lower double-ring sleeve, and the two screw rods are respectively penetrated by the middle thread transmission of the two external connecting blocks.

[0012] A further improvement based on the above technical solution is that clamping tubes are vertically fixed on the four sides of the mobile frame body, and the four clamping tubes are respectively clamped on the four sides of the lower double-ring sleeve, and a sliding guide rod is slidably inserted into the upper side of each of the clamping tubes, and fixed arc plates are respectively fixed on the left and right sides of the upper double-ring sleeve, and the top of the sliding guide rod is locked and connected with the fixed arc plate.

[0013] A further improvement based on the above technical solution is that an air pressure device is installed on the top of the upper double-ring sleeve, discharge valves are installed on the bottom of the lower double-ring sleeves corresponding to the two barrel cavities, a water inlet pipe is installed on one side of the lower double-ring sleeve, and the water inlet pipe is connected to the two barrel cavities respectively, and two feed ports corresponding to the barrel cavities are opened on the upper side of the upper double-ring sleeve, and the feed ports are tightly closed with material covers.

[0014] By adopting the above technical solution, the present invention has the following advantages: The two barrel cavities of the present invention have different mixing states, and the two barrel cavities are in a separated state: since a retaining wall is provided in the middle of the inner side of the upper double-ring sleeve and a raised closing block is provided at the bottom, when the lower double-ring sleeve and the upper double-ring sleeve are combined, that is, the lifting assembly drives the upper double-ring sleeve to move downward so that the raised closing block is tightly plugged in the middle and bottom of the lower double-ring sleeve, the inner side of the lower double-ring sleeve can be separated into two separate barrel cavities for separate mixing and stirring; The bottom of the two barrel cavities are connected: when the upper double-ring sleeve moves upward to drive the raised sealing block to separate from the middle and bottom of the lower double-ring sleeve, the two barrel cavities can be connected to blend the internal materials; this layered mixing function can meet the needs of mixing different raw materials separately and then blending them, that is, polylactic acid and different additives are stirred separately in different barrel cavities, and then blended after reaching a specific state, which improves the refinement of the mixing and solves the problem that the existing equipment cannot be mixed or blended separately; The upper stirring assembly and the lower stirring assembly of the present invention can rotate in opposite directions in the two barrel cavities to produce mixing and collision effects in different directions. At the same time, the upper double-ring sleeve can be reciprocated up and down according to the use requirements, so that the upper stirring assembly can mix and stir the materials at different positions of the barrel cavity along the lifting path, greatly improving the mixing and stirring effect and efficiency; When the upper double-ring sleeve moves upward, the capacity of the entire barrel cavity can also be increased. This structure can adjust the effective mixing capacity of the equipment according to different production scales or product formulas, avoiding the problem that the capacity of existing equipment cannot be flexibly adjusted and cannot meet the production scale requirements, which can greatly improve the use effect and production efficiency of the equipment; The upper rotating shaft rod of the upper stirring assembly of the present invention is sleeved on the rotating plug rod of the lower stirring assembly. Therefore, when the upper stirring assembly follows the upper double-ring sleeve to move up and down, it can still be connected with the lower rotating shaft rod of the lower stirring assembly. The rotating plug rod not only plays an effective guiding role, improves the lifting stability of the upper double-ring sleeve and the upper stirring assembly, but also improves the strength of the overall structure, so that the upper rotating shaft rod and the lower rotating shaft rod are always kept on the same axis, and the setting of the bearing can make the rotation connection between them smoother. In addition, an inclined scraper is installed on the lower side of the lower rotating shaft. The bottom of the scraper is in a pointed shape and contacts the inner bottom surface of the lower double-ring sleeve. During the mixing process, the material at the bottom can be effectively scraped off and pushed upward for re-mixing, preventing the material from settling and remaining at the bottom, thus ensuring the uniformity of mixing. A rubber airbag ring is arranged on the inner side of the airtight convex edge, and a rubber convex ring is fixed on the bottom opening edge of the upper double-ring sleeve. These structures ensure good sealing performance of the lower double-ring sleeve and the upper double-ring sleeve in different states, prevent material leakage and external air from entering and affecting the mixing effect, and cooperate with the air pressure device installed on the top of the upper double-ring sleeve to adjust the air pressure environment of the cylinder cavity, which helps to prevent foaming during mixing and improve the mixing reaction effect. In addition, the rubber airbag ring can be expanded and tightened on the outer surface of the upper double-ring sleeve, which can improve the airtightness between them and further strengthen the clamping effect of the lower double-ring sleeve on the upper double-ring sleeve, thereby improving its stability. A connecting pipe is installed in the middle of the raised closing block. When materials need to be transported and mixed between the two barrel cavities, this arrangement can be achieved by controlling the electric valve and the submersible pump of the connecting pipe to form a side injection effect of one in and one out, further improving the side mixing and collision effect of the materials in the barrel cavity, and is suitable for the separation or connection state of the two barrel cavities. The present invention vertically fixes clamping tubes on the four sides of the mobile frame body, which can not only limit the lower double-ring sleeve to prevent it from loosening and deviating, but also a sliding guide rod is slidably inserted into the upper side of the clamping tube, which is connected with the upper double-ring sleeve through the sliding guide rod, so as to provide a stable guide for its lifting and lowering, ensure the stability of the equipment during operation, and be beneficial to improving the mixing accuracy and the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 Another perspective structural diagram of; Figure 3 It is a schematic diagram of the internal structure of the lower double-ring sleeve and the upper double-ring sleeve of the present invention; Figure 4 It is a schematic diagram of the structure of the upper double-ring sleeve of the present invention from a side upward view; Figure 5 It is a structural schematic diagram of the two cylinder chambers of the present invention in a separated state; Figure 6 It is a structural schematic diagram of the two barrel cavities in the communication state of the present invention; Figure 7 It is a schematic diagram of the connection between the upper stirring assembly and the lower stirring assembly of the present invention; Figure 8 It is a structural schematic diagram of the lower stirring assembly of the present invention; Fig. 9 It is a schematic diagram of the structure of the airtight convex edge of the present invention; Fig.10 It is a schematic diagram of the structure of the connecting pipe and the sealing gasket of the present invention; In the figure: a mobile frame body 1, a lower double-ring sleeve 2, an external connecting block 21, a discharge valve 22, a water inlet pipe 23, a heating plate 24, an upper double-ring sleeve 3, a feed port 31, a retaining wall 32, a barrel cavity 33, a raised closing block 34, a sealing gasket 341, a connecting pipe 35, a rubber convex ring 36, an electric valve 37, a submersible pump 38, a screw 4, a lifting motor 41, a pneumatic device 5, a clamping pipe 6, a sliding guide rod 61, a fixed arc plate 62, an airtight convex edge 7, an inner notch 71, a rubber airbag ring 72, an air pump 73, an upper stirring assembly 8, an upper stirring motor 80, an upper rotating shaft rod 81, a first stirring blade 82, a lower stirring assembly 9, a lower stirring motor 90, a lower rotating shaft rod 91, a bearing 92, a rotating plug rod 922, a second stirring blade 93, and an inclined scraper 94. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0017] like Figure 1-10 As shown, the present invention provides a technical solution for an apparatus for preparing a transparent toughening agent for polylactic acid, comprising a moving frame body 1, on the upper side of which a lower double-ring sleeve 2 is installed for holding materials, the moving frame body 1 serves as a supporting structure for the entire device, an upper double-ring sleeve 3 is slidably embedded in the inner wall of the upper side of the lower double-ring sleeve 2 to seal the entire inner cylinder cavity, the moving frame body 1 facilitates the movement of the entire device, the lower double-ring sleeve 2 is used for holding materials, the upper double-ring sleeve 3 seals the inner cylinder cavity of the lower double-ring sleeve 2, and this structure provides a basic accommodation space for mixing and stirring materials; In the figure, the heating plate 24 is arranged at the bottom of the inner wall of the lower double-ring sleeve 2, and the upper double-ring sleeve 3 is inserted downward into the lower double-ring sleeve 2 and is in a suspended state, and the heating plate 24 is located below the upper double-ring sleeve 3 at an interval, that is, a certain space is left, so that after the upper double-ring sleeve 3 is sleeved on the lower double-ring sleeve 2, it will not press on the heating plate 24 and the connecting pipe 35, thereby damaging them. When it is necessary to heat the material, the heating plate 24 can provide heat to meet the temperature requirements of certain mixing processes, such as making the material reach a specific reaction temperature or improving the fluidity of the material.

[0018] The retaining wall 32 of the present invention is integrally arranged in the middle part of the inner side of the upper double-ring sleeve 3, so that the two inner cavities of the upper double-ring sleeve 3 are separated. A protruding closing block 34 is provided at the bottom of the retaining wall 32, and the protruding closing block 34 can be adapted to be tightly plugged in the middle part and bottom surface of the inner side of the lower double-ring sleeve 2. Specifically, when the upper double-ring sleeve 3 is displaced downward, the protruding closing block 34 is driven to be tightly plugged in the middle part and bottom surface of the inner side of the lower double-ring sleeve 2, thereby dividing the inner side of the lower double-ring sleeve 2 into two separate barrel cavities 33 for mixing and stirring; when the upper double-ring sleeve 3 is displaced upward, the protruding closing block 34 is driven to be separated from the middle part and bottom surface of the lower double-ring sleeve 2, so that the materials of the two barrel cavities 33 are blended, and the upward displacement of the upper double-ring sleeve 3 can also increase the capacity of the two barrel cavities 33, thereby meeting different mixing process requirements.

[0019] Furthermore, two connecting pipes 35 are installed in the middle of the raised closing block 34, and electric valves 37 are installed at both ends of the connecting pipes 35. Two submersible pumps 38 are installed on the inner side of the raised closing block 34, and the feed end and the discharge end of the submersible pump 38 are respectively connected to the two ends of the connecting pipe 35. When it is necessary to transport and mix materials between the two barrel cavities 33, it can be achieved by controlling the electric valve 37 and the submersible pump 38 of the connecting pipe 35 to form an inlet and outlet lateral injection effect, further improving the lateral mixing and collision effect of the material in the barrel cavity 33. The outer surface of the raised closing block 34 is compounded with a sealing gasket 341, which is tightly connected to the inner middle and bottom surface of the lower double-ring sleeve 2 through the sealing gasket 341 to improve the sealing effect.

[0020] In the present invention, an upper stirring assembly 8 is installed in the middle of the upper double-ring sleeve 3 corresponding to the upper sides of the two barrel cavities 33. The upper stirring assembly 8 includes an upper rotating shaft rod 81 rotatably installed on the inner side of the upper double-ring sleeve 3, and the upper rotating shaft rod 81 is installed with two first stirring blades 82. The upper rotating shaft rods 81 of the two upper stirring assemblies 8 are connected by a transmission belt. An upper stirring motor 80 for driving one of the upper rotating shaft rods 81 to rotate is installed on the top of the upper double-ring sleeve 3. The upper stirring motor 80 drives the upper rotating shaft rod 81 to rotate, and then drives the first stirring blades 82 of the two upper rotating shaft rods 81 to rotate, so as to stir the material in the barrel cavity 33. The two upper stirring assemblies 8 are connected by a transmission belt to realize synchronous stirring of the two barrel cavities 33, reduce the input of the motor and improve the uniformity and efficiency of stirring.

[0021] A lower stirring assembly 9 is installed in the middle of the lower double-ring sleeve 2 corresponding to the lower sides of the two barrel cavities 33. The lower stirring assembly 9 includes a lower rotating shaft rod 91 rotatably installed on the inner side of the lower double-ring sleeve 2. The lower rotating shaft rods 91 of the two lower stirring assemblies 9 are connected by a transmission belt. A second stirring blade 93 is installed in the middle of the lower rotating shaft rod 91. A lower stirring motor 90 for driving the lower rotating shaft rod 91 to rotate is installed on the lower side of the lower double-ring sleeve 2. The lower stirring motor 90 drives the two lower rotating shaft rods 91 to rotate synchronously. The lower rotating shaft rod 91 drives the second stirring blade 93 to synchronously stir the materials in the barrel cavity 33. The rotation direction of the lower stirring motor 90 is opposite to that of the upper stirring motor 80. Therefore, the stirring directions of the first stirring blade 82 and the second stirring blade 93 are opposite, so that the materials produce collision effects in different directions, thereby improving the mixing and stirring effect. In the above technical solution, a bearing 92 is installed on the top of the lower rotating shaft rod 91, and a rotating plug rod 922 is rotatably installed in the middle of the bearing 92. The rotating plug rod 922 is movably inserted in the middle of the bottom end of the upper rotating shaft rod 81, so that when the upper stirring component 8 follows the upper double-ring sleeve 3 to move up and down, it can still be in a connected state with the lower rotating shaft rod 91 of the lower stirring component 9, which not only plays a guiding role, but also can improve the stability of the entire structure. The bearing 92 can ensure the smoothness of the rotation between the lower rotating shaft rod 91 and the upper rotating shaft rod 81 and reduce friction.

[0022] A further arrangement is that an inclined scraper 94 is obliquely installed on the lower side of the lower rotating shaft 91. The bottom of the inclined scraper 94 is a pointed shape and is against the inner bottom surface of the lower double-ring sleeve 2. During the stirring process, the material at the bottom can be effectively scraped off and pushed upward for re-mixing to prevent the material from settling and remaining at the bottom, thereby ensuring the uniformity of mixing.

[0023] The present invention also includes an airtight convex edge 7, which is fixed on the outer edge of the top opening of the lower double-ring sleeve 2, and an inner notch 71 is opened on the inner side of the airtight convex edge 7, and a rubber airbag ring 72 is embedded on the inner side of the inner notch 71. The rubber airbag ring 72 is in close contact with the outer surface of the upper double-ring sleeve 3, and the mobile frame body 1 is equipped with an air pump 73, and the air pump 73 is connected to the rubber airbag ring 72 through an air pipe. Therefore, the rubber airbag ring 72 can achieve close contact with the surface of the upper double-ring sleeve 3 under the action of the air pump 73, ensuring good sealing performance of the lower double-ring sleeve 2 and the upper double-ring sleeve 3 in different states, preventing material leakage and outside air from entering and affecting the mixing effect, and the rubber airbag ring 72 can also elastically tighten the upper double-ring sleeve 3 to improve the connection effect.

[0024] At the same time, a rubber convex ring 36 is fixedly provided on the bottom opening edge of the upper double-ring sleeve 3, and is in close contact with the outer surface of the lower double-ring sleeve 2 or the rubber airbag ring 72 through the rubber convex ring 36, further enhancing the sealing effect, and working together with the rubber airbag ring 72 and other structures to prevent material leakage and outside air from entering.

[0025] In the above technical scheme, in order to realize the up and down lifting of the upper double-ring sleeve 3, thereby realizing the functions of separation and connection state conversion of the barrel cavity 33, the lifting component is arranged on the upper side of the upper double-ring sleeve 3 and connected to the outer side of the lower double-ring sleeve 2, the lifting component includes a screw 4 vertically rotatably installed on the outer side of the upper double-ring sleeve 3, and a lifting motor 41 for driving the screw 4 to rotate is installed on the top of the upper double-ring sleeve 3. There are two screws 4, which are connected by a transmission belt. External connecting blocks 21 are respectively installed on the front and rear sides of the lower double-ring sleeve 2, and the two screws 4 are respectively penetrated by the middle thread transmission of the two external connecting blocks 21. The lifting motor 41 drives the screw 4 to rotate. Through the thread transmission of the screw 4 and the external connecting block 21, the two screws 4 are arranged one after the other, which can synchronously and stably push the upper double-ring sleeve 3 upward for displacement, and the transmission control accuracy of the screw 4 is high.

[0026] In this embodiment, clamping tubes 6 are vertically fixed on the four sides of the mobile frame body 1, and the four clamping tubes 6 are respectively clamped on the four sides of the lower double-ring sleeve 2. The clamping tubes 6 limit the lower double-ring sleeve 2 to prevent it from loosening and deviating. A sliding guide rod 61 is slidably inserted into the upper side of each clamping tube 6. Fixed arc plates 62 are respectively fixed on the left and right sides of the upper double-ring sleeve 3. The top of the sliding guide rod 61 is locked and connected with the fixed arc plate 62. The sliding guide rod 61 provides a stable guide for the lifting and lowering of the upper double-ring sleeve 3, ensures the stability of the equipment during operation, and is beneficial to improving the mixing accuracy and the service life of the equipment.

[0027] In addition, an air pressure device 5 is installed on the top of the upper double-ring sleeve 3. The air pressure device 5 is a prior art and is used to adjust the air pressure environment of the barrel cavity 33, which helps to prevent foaming during mixing and improve the mixing reaction effect. Therefore, it will not be described in detail here. A discharge valve 22 is installed at the bottom of the lower double-ring sleeve 2 corresponding to the two barrel cavities 33. The discharge valve 22 is used to control the discharge of the mixed material. A water inlet pipe 23 is installed on one side of the lower double-ring sleeve 2. The water inlet pipe 23 is connected to the two barrel cavities 33 respectively. The water inlet pipe 23 can be used to inject water or other liquids into the barrel cavity 33 to meet different mixing process requirements. Two feed ports 31 corresponding to the barrel cavity 33 are provided on the upper side of the upper double-ring sleeve 3. The feed port 31 is convenient for adding materials to the barrel cavity 33, and the feed port 31 is tightly closed and installed with a material cover. This feeding and discharging structure facilitates the input of raw materials, water replenishment during processing, and the removal of finished products or intermediate products, thereby improving the operating convenience of the equipment.

[0028] In a more specific implementation principle, when the two barrel chambers 33 need to be separated and mixed separately and then mixed together, the raised sealing block 34 is tightly plugged into the middle and bottom surface of the lower double-ring sleeve 2, so that the two barrel chambers 33 are separated and can be mixed separately. It is only necessary to open the material covers of the two feed ports 31, and put the materials to be mixed into the two feed ports 31 respectively, and then start the upper stirring motor 80 and the lower stirring motor 90 to rotate in the opposite direction, so that the corresponding upper rotating shaft rod 81 and the lower rotating shaft rod 91 rotate, driving the first stirring blade 82 and the second stirring blade 83 to rotate. The blades 93 rotate in opposite directions to mix the materials inside the barrel cavity 33; during this period, the air pressure in the barrel cavity 33 can be adjusted by the air pressure device 5 according to the use requirements. When the material needs to be heated, the heating plate 24 can provide heat to meet the temperature requirements of certain mixing processes, so that the material reaches a specific reaction temperature or improves the fluidity of the material, etc. Water can also be transported to the barrel cavity 33 through the water inlet pipe 23; when the two barrel cavities 33 are mixed, the screw 4 is driven to rotate by the lifting motor 41, and the screw 4 threadedly drives the external connection block 2 1, causing the upper double-ring sleeve 3 to slide upward and rise on the lower double-ring sleeve 2, while the upper rotating shaft rod 81 will stably slide upward on the rotating plug rod 922, and the sliding guide rod 61 will stably guide and slide upward on the clamping tube 6. Through this triple guiding and sliding effect, the structural stability of the overall lifting activity of the upper double-ring sleeve 3 can be greatly improved, and after the sliding is completed, the air pump 73 can be used to inflate the rubber airbag ring 72 to make it expand and tighten on the outer surface of the upper double-ring sleeve 3, so that the air tightness between them can be improved and the lower double-ring sleeve can be further strengthened. The barrel 2 has a clamping effect on the upper double-ring sleeve 3, which improves its stability. When the upper double-ring sleeve 3 moves upward to drive the raised sealing block 34 to separate from the middle and bottom of the lower double-ring sleeve 2, the two barrel chambers 33 form a connected state, and the materials preliminarily mixed in the two barrel chambers 33 can be mixed together again. During the blending, the electric valve 37 and the submersible pump 38 of the two connecting pipes 35 can be controlled to realize the lateral injection and transportation of the materials between the two barrel chambers 33, thereby improving the flow speed and mixing collision effect of the materials inside the barrel chamber 33, and improving the mixing effect and efficiency; In addition, the upper double-ring sleeve 3 is displaced upward and fixed at a certain height, which can increase the internal capacity of the two barrel cavities 33 to meet the mixing needs of a larger capacity. During the mixing period, according to the use requirements, the upper double-ring sleeve 3 can be reciprocated up and down by the action of the lifting motor 41, so that the first stirring blade 82 can be lifted and lowered synchronously, and the materials at different heights in the barrel cavity 33 can be mixed and stirred, further improving the mixing efficiency. There is no need to transport them to other equipment for mixing reaction. After the mixing reaction is completed, the discharge valve 22 can be opened to discharge them outward.

[0029] The above embodiments show and describe the basic principles and main features of the invention and the advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. A device for preparing a transparent toughening agent for polylactic acid, characterized in that: include: The movable frame body (1) has a lower double-ring sleeve (2) installed on its upper side for holding materials, and an upper double-ring sleeve (3) is slidably embedded in the inner wall of the upper side of the lower double-ring sleeve (2) to seal the entire inner cylinder cavity; A heating plate (24) is arranged at the bottom of the inner wall of the lower double-ring sleeve (2); the upper double-ring sleeve (3) is inserted downward into the lower double-ring sleeve (2) and is in a suspended state, and the heating plate (24) is located below the upper double-ring sleeve (3) at a distance; A lifting component, which is arranged on the upper side of the upper double-ring sleeve (3) and connected to the outer side of the lower double-ring sleeve (2) to achieve the upper and lower lifting of the upper double-ring sleeve (3); The retaining wall (32) is integrally arranged at the middle part of the inner side of the upper double-ring sleeve (3). The bottom of the retaining wall (32) is provided with a raised closing block (34), and the raised closing block (34) is adapted to be plugged tightly in the middle part and bottom surface of the inner side of the lower double-ring sleeve (2); when the upper double-ring sleeve (3) moves downward, the raised closing block (34) is driven to be plugged tightly in the middle part and bottom surface of the lower double-ring sleeve (2), thereby dividing the inner side of the lower double-ring sleeve (2) into two separate barrel cavities (33) for mixing and stirring; when the upper double-ring sleeve (3) moves upward, the raised closing block (34) is driven to be separated from the middle part and bottom surface of the lower double-ring sleeve (2), so that the materials in the two barrel cavities (33) are mixed; An upper stirring assembly (8) is installed in the middle of the upper double-ring sleeves (3) corresponding to the upper sides of the two barrel cavities (33), while a lower stirring assembly (9) is installed in the middle of the lower double-ring sleeves (2) corresponding to the lower sides of the two barrel cavities (33).

2. The device for preparing a transparent toughening agent for polylactic acid according to claim 1, characterized in that: The upper stirring assembly (8) comprises an upper rotating shaft (81) rotatably mounted on the inner side of the upper double-ring sleeve (3), and the upper rotating shaft (81) is mounted with a plurality of first stirring blades (82). The upper rotating shafts (81) of the two upper stirring assemblies (8) are connected via a transmission belt, and an upper stirring motor (80) for driving one of the upper rotating shafts (81) to rotate is mounted on the top of the upper double-ring sleeve (3).

3. The device for preparing a transparent toughening agent for polylactic acid according to claim 2, characterized in that: The lower stirring assembly (9) comprises a lower rotating shaft rod (91) rotatably mounted on the inner side of the lower double-ring sleeve (2); the lower rotating shaft rods (91) of the two lower stirring assemblies (9) are connected via a transmission belt; a second stirring blade (93) is mounted in the middle of the lower rotating shaft rod (91); a lower stirring motor (90) for driving the lower rotating shaft rod (91) to rotate is mounted on the lower side of the lower double-ring sleeve (2); a bearing (92) is mounted on the top of the lower rotating shaft rod (91); and a rotating plug rod (922) is rotatably mounted in the middle of the bearing (92); the rotating plug rod (922) is movably inserted through the middle of the bottom end of the upper rotating shaft rod (81).

4. The device for preparing a transparent toughening agent for polylactic acid according to claim 3, characterized in that: An inclined scraper (94) is obliquely mounted on the lower side of the lower rotating shaft rod (91); the bottom of the inclined scraper (94) is in a pointed shape and abuts against the inner bottom surface of the lower double-ring sleeve (2).

5. The device for preparing a transparent toughening agent for polylactic acid according to claim 1, characterized in that: The vehicle also comprises an airtight convex edge (7), the airtight convex edge (7) being fixedly mounted on the outer edge of the top opening of the lower double-ring sleeve (2), and an inner notch (71) being provided on the inner side of the airtight convex edge (7), a rubber airbag ring (72) being embedded in the inner side of the inner notch (71), the rubber airbag ring (72) being in close contact with the outer surface of the upper double-ring sleeve (3), and an air pump (73) being installed on the movable frame body (1), and the air pump (73) being connected to the rubber airbag ring (72) via an air pipe.

6. The device for preparing a transparent toughening agent for polylactic acid according to claim 5, characterized in that: A rubber convex ring (36) is fixedly provided on the bottom opening edge of the upper double-ring sleeve (3), and is in close contact with the outer surface of the lower double-ring sleeve (2) or the rubber airbag ring (72) through the rubber convex ring (36).

7. The device for preparing a transparent toughening agent for polylactic acid according to claim 2, characterized in that: Two connecting pipes (35) are installed in the middle of the raised closing block (34), and electric valves (37) are installed at both ends of the connecting pipes (35). Two submersible pumps (38) are installed inside the raised closing block (34), and the feed end and the discharge end of the submersible pump (38) are respectively connected to the two ends of the connecting pipes (35). The outer surface of the raised closing block (34) is compounded with a layer of sealing gasket (341).

8. The device for preparing a transparent toughening agent for polylactic acid according to claim 1, characterized in that: The lifting assembly comprises a screw rod (4) which is vertically rotatably mounted on the outside of an upper double-ring sleeve (3); a lifting motor (41) for driving the screw rod (4) to rotate is mounted on the top of the upper double-ring sleeve (3); two screw rods (4) are provided and are connected by a transmission belt; external connection blocks (21) are respectively mounted on the front and rear sides of the lower double-ring sleeve (2); and the two screw rods (4) are respectively driven through by threads in the middle of the two external connection blocks (21).

9. The device for preparing a transparent toughening agent for polylactic acid according to claim 1, characterized in that: The four sides of the mobile frame body (1) are respectively fixedly provided with clamping tubes (6) vertically, and the four clamping tubes (6) are respectively clamped on the four sides of the lower double-ring sleeve (2), and a sliding guide rod (61) is slidably inserted into the upper side of each clamping tube (6), and the left and right sides of the upper double-ring sleeve (3) are respectively fixedly provided with fixed arc plates (62), and the top of the sliding guide rod (61) is locked and connected with the fixed arc plate (62).

10. The device for preparing a transparent toughening agent for polylactic acid according to claim 9, characterized in that: A pneumatic device (5) is installed on the top of the upper double-ring sleeve (3); a discharge valve (22) is installed on the bottom of the lower double-ring sleeve (2) corresponding to the two barrel cavities (33); a water inlet pipe (23) is installed on one side of the lower double-ring sleeve (2); the water inlet pipe (23) is communicated with the two barrel cavities (33) respectively; two feed ports (31) corresponding to the barrel cavities (33) are provided on the upper side of the upper double-ring sleeve (3), and the feed ports (31) are tightly closed and installed with a material cover.

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