Feeding device for environment-friendly plasticizer production

Abstract

The utility model discloses a feeding device for environment-friendly plasticizer production, which comprises a bottom plate, a reaction kettle body is arranged at the upper end of the bottom plate, a feeding hopper is fixedly communicated with the upper end of the reaction kettle body, a feeding mechanism is arranged above the bottom plate, the feeding mechanism comprises a rotating component, a lifting component and a discharging component, the rotating component comprises a fixed seat, and the lifting component comprises a lifting component and a discharging component. The inner bottom wall of the fixing base is rotationally connected with a stand column through a bearing, the upper end of the stand column penetrates through and extends to the position above the fixing base, the stand column is fixedly sleeved with a worm gear, and a first servo motor is fixedly installed on the inner bottom wall of the fixing base. The feeding position and speed can be accurately controlled, the requirements for raw material adding in different production stages are met, the spiral piece and the arc-shaped scraper blade on the rotating shaft rotate during discharging, the stirring and pushing effects on materials are achieved, fine particle powder is prevented from being accumulated and blocked, and the smooth discharging effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of plasticizer production technology, specifically a feeding device for producing environmentally friendly plasticizers. Background Technology

[0002] Plasticizers, also known as plasticizers, are substances that increase the plasticity of polymer materials when added to them. The use of plasticizers can improve the performance of polymer materials, reduce production costs, and improve production efficiency. They are an important class of chemical additives. In order to increase the plasticity and strength of plastics, the raw materials need to be put into a reaction vessel for reaction in the preparation of plasticizers. Currently, problems such as material blockage and leakage are prone to occur during the feeding process.

[0003] For example, a Chinese patent document discloses a feeding device for the production of environmentally friendly plasticizers (publication number: CN220282881U). This patent uses a round rod and rack on the base to enable the transmission device to move up and down, thereby moving the feeding box up and down to achieve the feeding effect, avoiding manual feeding and effectively improving work efficiency. The use of limit pins effectively limits the baffle, ensuring that the internal raw materials do not leak out. The use of a miniature rotating motor effectively controls the limit pins, allowing operators to remotely control the feeding process, ensuring the convenience and safety of the device.

[0004] However, since the discharge port of the feed box is located outside the feed port on the reactor, the solid granular raw materials are very likely to deviate from the feed port and scatter around due to the impact force and irregular movement trajectory during the falling process, causing waste. In addition, when adding some fine granular powder, it is easy to accumulate into clumps, causing problems such as poor material discharge or even blockage. Utility Model Content

[0005] The purpose of this invention is to provide an environmentally friendly feeding device for the production of plasticizers, in order to solve the problems of spillage and waste and poor material flow in existing reaction kettles.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a feeding device for the production of environmentally friendly plasticizers, including a base plate, a reaction vessel body is provided at the upper end of the base plate, and a feed hopper is fixedly connected to the upper end of the reaction vessel body;

[0007] A feeding mechanism is provided above the base plate, and the feeding mechanism includes a rotating component, a lifting component and a discharging component.

[0008] The rotating assembly includes a fixed base, and a column is rotatably connected to the inner bottom wall of the fixed base via a bearing. The upper end of the column extends through and above the fixed base. A worm gear is fixedly sleeved on the outside of the column. A first servo motor is fixedly installed on the inner bottom wall of the fixed base. A worm is fixedly installed on the output shaft of the first servo motor via a coupling. The outer surface of the worm meshes with the tooth surface of the worm gear.

[0009] As a further embodiment of this utility model: the lifting assembly includes a mounting block, the lower end of the mounting block is fixedly connected to the upper end of the column, a stroke groove is provided on the front side of the mounting block, and a second servo motor is fixedly installed on the upper end of the mounting block.

[0010] As a further embodiment of this utility model: the output shaft of the second servo motor is fixedly mounted with a lead screw via a coupling, one end of the lead screw passes through the mounting block and is rotatably connected to the inner bottom wall of the stroke groove via a bearing, and a lifting block is threaded onto the outside of the lead screw.

[0011] As a further embodiment of this utility model: one end of the lifting block is slidably connected to the inner wall of the travel groove, the other end of the lifting block extends to the front of the mounting block, and a fixing ring is fixedly connected to the other end of the lifting block.

[0012] As a further embodiment of this utility model: the feeding assembly includes a material cylinder, the outer side of which is fixedly sleeved with the inner wall of the fixing ring, the lower end of which is fixedly connected to a discharge pipe, and the upper end of the fixing ring is fixedly mounted with symmetrically distributed servo electric cylinders.

[0013] As a further embodiment of this utility model: one end of each of the piston rods of the two servo electric cylinders is fixedly connected to a lifting plate, and a third servo motor is fixedly installed on the upper end of the lifting plate. The output shaft of the third servo motor is fixedly installed with a rotating shaft through a coupling, and one end of the rotating shaft passes through the lifting plate and extends into the interior of the discharge pipe.

[0014] As a further embodiment of this utility model: a conical plug is fixedly connected to the lower end of the rotating shaft, the outer inclined surface of the conical plug contacts the lower end of the discharge pipe, and a spiral blade is fixedly sleeved on the outside of the rotating shaft, the outer side of the spiral blade contacts the inner wall of the discharge pipe.

[0015] As a further embodiment of this utility model: the outer side of the rotating shaft is provided with a movable through groove, the inner wall of the movable through groove is slidably connected with a connecting block, the inner wall of the connecting block is slidably sleeved with a guide rod, and the two ends of the guide rod are respectively fixedly connected to the inner bottom wall and the inner top wall of the movable through groove.

[0016] As a further embodiment of this utility model: the two ends of the connecting block are fixedly connected with symmetrically distributed arc-shaped scrapers, the outer side of the arc-shaped scrapers is in contact with the inner wall of the material cylinder, and the upper end of the connecting block is fixedly connected with a support spring, the upper end of the support spring is fixedly connected with the inner top wall of the movable through groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] In this invention, the rotating component, lifting component, and feeding component work together to precisely control the feeding position and speed, meeting the raw material addition needs of different production stages. Furthermore, the spiral blades and arc-shaped scrapers on the rotating shaft rotate during discharge, which stirs and pushes the material, preventing fine powder particles from accumulating and clogging, and ensuring smooth feeding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a perspective view of the fixed base structure in this utility model;

[0021] Figure 3 This is a perspective view of the material cylinder structure in this utility model;

[0022] Figure 4 This is a perspective view of the rotating shaft structure of this utility model;

[0023] Figure 5 This utility model Figure 4 Enlarged view of the structure at point A in the middle.

[0024] In the diagram: 1. Base plate; 2. Reactor body; 3. Feed hopper; 4. Fixed base; 41. Column; 42. Worm gear; 43. First servo motor; 44. Worm; 5. Mounting block; 51. Stroke groove; 52. Second servo motor; 53. Lead screw; 54. Lifting block; 55. Fixing ring; 6. Material cylinder; 61. Discharge pipe; 62. Servo electric cylinder; 63. Lifting plate; 64. Third servo motor; 65. Rotating shaft; 66. Conical plug; 67. Spiral blade; 68. Movable through groove; 69. Connecting block; 610. Guide rod; 611. Arc-shaped scraper; 612. Support spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0027] Reference Figures 1 to 5 In this embodiment of the utility model, a feeding device for producing environmentally friendly plasticizers includes a base plate 1. A reaction vessel body 2 is firmly installed on the upper end of the base plate 1 by welding. The reaction vessel body 2 is made of stainless steel that is resistant to acid and alkali corrosion and high temperature and pressure. Its internal structure is precise and can provide a stable and suitable environment for the chemical reaction of plasticizer raw materials. A feed hopper 3 is fixedly connected to the upper end of the reaction vessel body 2 by welding. The feed hopper 3 is funnel-shaped with a wider top and a narrower bottom. Its inner wall is smooth and made of the same material as the reaction vessel body 2, which facilitates the rapid and smooth flow of raw materials into the reaction vessel and reduces the residue and accumulation of raw materials.

[0028] Above the base plate 1, a finely arranged feeding mechanism is located. This mechanism consists of three main parts: a rotating component, a lifting component, and a discharging component. Each component works closely together, performing its specific function to complete the complex and precise feeding task. The rotating component, a key part for adjusting the horizontal position of the material cylinder 6, includes a fixed base 4. The fixed base 4 is made of rigid cast iron, and its internal structure is carefully designed to accommodate the column 41 and related transmission components. The inner bottom wall of the fixed base 4 is smoothly connected to the lower end of the column 41 via a high-precision bearing. The bearing is a ball bearing with high load-bearing capacity and low friction coefficient, ensuring that the column 41 rotates flexibly and is durable. The upper end of the column 41 is precisely penetrated... It extends to the top of the fixed base 4, and a worm gear 42 is fixedly sleeved on its outside by an interference fit. The worm gear 42 is selected with a module and helix angle that are compatible with the worm 44 to ensure precise and efficient meshing transmission. The first servo motor 43 is fixedly installed on the inner bottom wall of the fixed base 4 by bolts. The first servo motor 43 is a high-performance industrial servo motor that can precisely control the speed and direction. Its output shaft is fixedly installed with the worm 44 by a coupling. The worm 44 is also made of high-precision and high-strength material. Its outer surface is tightly meshed with the tooth surface of the worm gear 42. According to the worm gear transmission principle, the rotational motion of the motor is stably converted into the rotation of the column 41, thereby realizing precise control of the horizontal direction of the material cylinder 6.

[0029] The lifting assembly, as the core component for controlling the vertical height of the material cylinder 6, includes a mounting block 5. The lower end of the mounting block 5 is firmly fixed to the upper end of the column 41 by welding, ensuring stable and reliable force transmission. The front of the mounting block 5 is precision milled to create a stroke groove 51. The depth and width of the stroke groove 51 are adapted to the lifting block 54, providing a dedicated and precise space for the sliding of the lifting block 54. The upper end of the mounting block 5 is bolted to a second servo motor 52. The second servo motor 52 is also a high-performance, precisely controllable industrial servo motor. Its output shaft is fixed to a lead screw 53 via a coupling. The lead screw 53 is made of a metal material with good rigidity and high thread precision. One end of the lead screw 53 precisely passes through the mounting block 5 and is smoothly rotated and connected to the inner bottom wall of the stroke groove 51 through a high-precision bearing. The bearing ensures smooth rotation of the lead screw 53. The outside of the lead screw 53 is tightly engaged with the lifting block 54 through a precision thread. Based on the principle of thread transmission, when the lead screw 53 rotates, the lifting block 54 can achieve stable and precise up and down sliding within the stroke groove 51.

[0030] One end of the lifting block 54 is tightly slidably connected to the inner wall of the stroke groove 51 with a very small sliding gap, ensuring that the lifting block 54 has a stable trajectory during sliding without deviation or shaking. The other end of the lifting block 54 extends precisely to the front of the mounting block 5, and a fixing ring 55 is fixedly connected to the other end by welding. The fixing ring 55 is made of high-strength metal, and its inner diameter is precisely matched with the outer diameter of the material cylinder 6, providing a stable mounting base for the material cylinder 6 and ensuring that the material cylinder 6 remains stable during lifting and rotation.

[0031] The feeding assembly includes a material cylinder 6, which is made of food-grade stainless steel to ensure that the raw materials are not contaminated. Its outer surface is fixedly connected to the inner wall of the fixing ring 55 by an interference fit, and the connection is tight and stable. The lower end of the material cylinder 6 is fixedly connected to a discharge pipe 61. The diameter of the discharge pipe 61 is carefully designed according to the characteristics of the raw materials and the feeding requirements. Its inner wall is smooth to facilitate the smooth flow of raw materials. The upper end of the fixing ring 55 is fixedly installed with bolts to symmetrically distributed servo electric cylinders 62. The servo electric cylinders 62 are high-precision, high-thrust industrial-grade electric cylinders, which can accurately control the extension and retraction stroke of the piston rod to meet the feeding control requirements under different working conditions.

[0032] One end of each piston rod of the two servo electric cylinders 62 is fixedly connected to a lifting plate 63 by welding. The lifting plate 63 is made of a metal plate with good rigidity. A third servo motor 64 is fixedly installed on its upper end by bolts. The third servo motor 64 is also a high-performance industrial servo motor that can precisely control the speed and direction. Its output shaft is fixedly installed with a rotating shaft 65 by a coupling. The rotating shaft 65 is made of a high-strength, rigid metal material. One end of the rotating shaft precisely passes through the lifting plate 63 and extends into the interior of the discharge pipe 61, providing power support for subsequent mixing and feeding actions.

[0033] A conical plug 66 is fixedly connected to the lower end of the rotating shaft 65 by welding. The outer inclined surface of the conical plug 66 is in close contact with the lower end of the discharge pipe 61. Its taper is adapted to the lower opening of the discharge pipe 61, which can achieve precise sealing and opening, and effectively control the timing and flow of raw material discharge. A spiral blade 67 is fixedly sleeved on the outside of the rotating shaft 65 by interference fit. The outer side of the spiral blade 67 has a very small gap with the inner wall of the discharge pipe 61, which ensures that sufficient stirring force and propulsion force can be generated on the raw material during rotation, so as to push the raw material evenly and smoothly to the discharge pipe 61 and ensure continuous and stable feeding.

[0034] The outer surface of the rotating shaft 65 is milled to form a movable through groove 68. The depth and width of the movable through groove 68 are adapted to the connecting block 69, providing dedicated space for the sliding of the connecting block 69. The inner wall of the movable through groove 68 is tightly slidably connected to the connecting block 69, allowing the connecting block 69 to slide flexibly within it. The inner wall of the connecting block 69 is slidably fitted with a guide rod 610 through a clearance fit. The two ends of the guide rod 610 are fixedly connected to the inner bottom wall and inner top wall of the movable through groove 68 by welding, respectively. The guide rod 610 provides precise guidance for the sliding of the connecting block 69, ensuring its stable movement trajectory.

[0035] The two ends of the connecting block 69 are fixedly connected by welding to symmetrically distributed arc-shaped scrapers 611. The arc-shaped scrapers 611 are made of moderately elastic and wear-resistant rubber or plastic material. Their outer side is in close contact with the inner wall of the material cylinder 6, which can effectively scrape off the residual raw materials on the inner wall of the material cylinder 6. The upper end of the connecting block 69 is fixedly connected by welding to a support spring 612. The upper end of the support spring 612 is fixedly connected to the inner top wall of the movable through groove 68 by welding, forming a stable elastic support system. This ensures that the arc-shaped scrapers 611 are always in close contact with the inner wall of the material cylinder 6 during the rotation of the rotating shaft 65, so as to play a cleaning role.

[0036] The working principle of this utility model:

[0037] Step 1: The raw material to be added is pre-loaded into the material cylinder 6. The second servo motor 52 is started, and its output shaft drives the lead screw 53 to rotate at a constant speed. The lead screw 53 is threadedly connected to the lifting block 54. According to the principle of thread transmission, the lifting block 54 slides steadily upward in the stroke groove 51, driving the fixed ring 55 and the material cylinder 6 to rise smoothly. When the material cylinder 6 is raised to the predetermined height, that is, when it is ensured that its rotation trajectory will not touch the safe height of the reactor body 2, the system automatically switches the command and then starts the first servo motor 43. The output shaft drives the worm gear 44 to rotate. The worm gear 44 is precisely engaged with the worm wheel 42, driving the column 41 and the upper mounting block 5 to rotate slowly, thereby accurately adjusting the horizontal orientation of the material cylinder 6 so that it is directly above the feed hopper 3 of the reactor body 2, completing the initial positioning and preparing for the next step of feeding.

[0038] Step two, when preparing to unload, the central control system issues a command to start the piston rod of the servo electric cylinder 62 to retract, causing the lifting plate 63 to descend smoothly. The conical plug 66 descends and disengages from the lower end of the discharge pipe 61 via the rotating shaft 65. At the same time, the third servo motor 64 starts, driving the rotating shaft 65 to rotate, thereby driving the spiral blade 67 to rotate synchronously. The spiral blade 67 applies a continuous stirring and propulsive force to the raw material in the material cylinder 6, pushing the raw material evenly and smoothly to the discharge pipe 61, ensuring continuous and stable unloading. For fine granular powder that is prone to agglomeration, the stirring and cutting effect of the spiral blade 67 is particularly crucial, effectively breaking up clumps and maintaining a good unloading state. Furthermore, supported by the elastic force of the support spring 612, the arc-shaped scraper 611 always closely adheres to the inner wall and the inclined surface of the inner bottom wall of the material cylinder 6. As the rotating shaft 65 rotates, the arc-shaped scraper 611 scrapes off the residual raw material on the inner wall of the material cylinder 6, and together with the spiral blade 67, sends it into the reaction vessel, avoiding residual raw material in the material cylinder 6.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A feeding device for producing environmentally friendly plasticizers, comprising a base plate (1), characterized in that: The upper end of the base plate (1) is provided with a reactor body (2), and the upper end of the reactor body (2) is fixedly connected to a feed hopper (3). A feeding mechanism is provided above the base plate (1), and the feeding mechanism includes a rotating component, a lifting component and a discharging component; The rotating assembly includes a fixed base (4), and a column (41) is rotatably connected to the inner bottom wall of the fixed base (4) via a bearing. The upper end of the column (41) extends through and above the fixed base (4). A worm gear (42) is fixedly sleeved on the outside of the column (41). A first servo motor (43) is fixedly installed on the inner bottom wall of the fixed base (4). A worm (44) is fixedly installed on the output shaft of the first servo motor (43) via a coupling. The outer surface of the worm (44) meshes with the tooth surface of the worm gear (42). The lifting assembly includes a mounting block (5), the lower end of which is fixedly connected to the upper end of the column (41), a stroke groove (51) is provided on the front of the mounting block (5), and a second servo motor (52) is fixedly installed on the upper end of the mounting block (5). The output shaft of the second servo motor (52) is fixedly mounted with a lead screw (53) via a coupling. One end of the lead screw (53) passes through the mounting block (5) and is rotatably connected to the inner bottom wall of the stroke groove (51) via a bearing. The lead screw (53) is threadedly connected to a lifting block (54). One end of the lifting block (54) is slidably connected to the inner wall of the travel groove (51), and the other end of the lifting block (54) extends to the front of the mounting block (5). A fixing ring (55) is fixedly connected to the other end of the lifting block (54). The feeding assembly includes a material cylinder (6), the outside of which is fixedly sleeved with the inner wall of the fixing ring (55), the lower end of which is fixedly connected to a discharge pipe (61), and the upper end of the fixing ring (55) is fixedly installed with symmetrically distributed servo electric cylinders (62). One end of the piston rod of each of the two servo electric cylinders (62) is fixedly connected to a lifting plate (63). A third servo motor (64) is fixedly installed on the upper end of the lifting plate (63). The output shaft of the third servo motor (64) is fixedly installed with a rotating shaft (65) through a coupling. One end of the rotating shaft (65) passes through the lifting plate (63) and extends into the interior of the discharge pipe (61). A conical plug (66) is fixedly connected to the lower end of the rotating shaft (65). The outer inclined surface of the conical plug (66) contacts the lower end of the discharge pipe (61). A spiral blade (67) is fixedly sleeved on the outside of the rotating shaft (65). The outer side of the spiral blade (67) contacts the inner wall of the discharge pipe (61). The rotating shaft (65) has an external movable through groove (68), and a connecting block (69) is slidably connected to the inner wall of the movable through groove (68). A guide rod (610) is slidably sleeved on the inner wall of the connecting block (69), and the two ends of the guide rod (610) are fixedly connected to the inner bottom wall and the inner top wall of the movable through groove (68), respectively.

2. The feeding device for producing environmentally friendly plasticizers according to claim 1, characterized in that: The two ends of the connecting block (69) are fixedly connected to symmetrically distributed arc-shaped scrapers (611). The outer side of the arc-shaped scraper (611) contacts the inner wall of the material cylinder (6). The upper end of the connecting block (69) is fixedly connected to a support spring (612). The upper end of the support spring (612) is fixedly connected to the inner top wall of the movable through groove (68).

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