Automatic quantitative feeding device for polyurethane production

Abstract

The utility model belongs to the technical field of polyurethane production, in particular relates to an automatic quantitative feeding device for polyurethane production, and aims to solve the problems of low efficiency, difficulty in realizing accurate metering and mixing, easiness in causing raw material waste and unstable product quality due to manual feeding in the conventional polyurethane production process. According to the technical scheme, the automatic feeding device comprises a first support, a second support is fixedly arranged at the top of the first support, multiple feeding assemblies are arranged, multiple raw materials can be quantitatively fed at the same time, the production efficiency is greatly improved, meanwhile, weighing assemblies on the feeding assemblies can guarantee the accuracy of raw material proportioning at the same time, and the production cost is reduced. The stirring assembly is arranged, so that different materials can be uniformly mixed, the product quality is further improved, the operation is simple and convenient, the automation degree is high, and the difficulty and the labor intensity of manual operation are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyurethane production technical field especially relates to a polyurethane production automatic ration feeding device. BACKGROUND

[0002] Polyurethane is a kind of high molecular material formed by polyol and polyisocyanate through condensation polymerization, has the characteristics such as oil resistance, wear resistance, low temperature resistance, ageing resistance, hardness, is applied to textile, building, aviation, ship, traffic, medicine, electronics and other fields, in the polyurethane production process, the proportioning and mixing uniformity of raw materials have the vital influence on product quality.

[0003] Traditional polyurethane production process, the feeding mode usually relies on manual operation, not only inefficient, but also difficult to realize accurate measurement and mixing, is prone to raw material waste and product quality instability, therefore, we propose a kind of polyurethane production automatic ration feeding device to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings that in prior art, traditional polyurethane production process is manually fed, which is inefficient, difficult to realize accurate measurement and mixing, and prone to raw material waste and product quality instability, and proposes a kind of polyurethane production automatic ration feeding device.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of polyurethane production automatic ration feeding device, including first support, the top of the first support is fixedly arranged with second support, the side of the second support is fixedly arranged with fixed block, the inside of the second support is fixedly arranged with feeding pipe by support plate, the end of the feeding pipe close to fixed block is sealed, the side of the fixed block is rotatably connected with first screw rod, and the one end of the first screw rod extends to the inside of feeding pipe, the other side of the fixed block is fixedly arranged with first motor, the other end of the first screw rod penetrates fixed block and is fixedly connected with the output end of first motor, the side of the first support is fixedly arranged with PLC controller, the device further includes:

[0007] Multiple feeding assemblies, multiple feeding assemblies are all arranged on the second support, for realizing the simultaneous feeding of different raw materials;

[0008] Multiple weighing assemblies, multiple weighing assemblies are all arranged on the top of the second support, for completing the quantitative addition of different raw materials in cooperation with feeding assembly;

[0009] Stirring assembly, stirring assembly is arranged on the first support, for accelerating the mixing of different materials.

[0010] In a possible design, the feeding assembly includes a storage tank which is slidably arranged through the top of the second support and extends into the second support, the top of the storage tank is fixedly connected with a feeding pipe, the bottom of the storage tank is slidably connected with a discharging pipe, the discharging pipe is fixedly connected with the feeding pipe, the inner wall of the top of the storage tank is rotatably connected with a second screw rod which extends into the discharging pipe, the top of the second support is fixedly connected with a second motor, the top of the second screw rod is arranged through the top of the second support and is fixedly connected with the output end of the second motor, and the second motor is electrically connected with the PLC controller.

[0011] In a possible design, the feeding assembly further includes two limiting blocks which are symmetrically and fixedly arranged at the top of the second support, and the top of each of the two limiting blocks is provided with a limiting groove, and the outer wall of the storage tank is symmetrically provided with two fixed ears which correspond to the limiting grooves and are slidably arranged in the corresponding limiting grooves.

[0012] In a possible design, the weighing assembly includes two weighing sensors which are fixedly arranged in the inner wall at the bottom of the corresponding limiting groove, and the two fixed ears are arranged on the top of the corresponding weighing sensor, and the two weighing sensors are electrically connected with the PLC controller.

[0013] In a possible design, the stirring assembly includes a stirring tank which is fixedly arranged at the top of the first support, one end of the feeding pipe is arranged through the stirring tank and communicates with the stirring tank, the inner wall of the top of the stirring tank is rotatably connected with a stirring rod, and the two sides of the stirring rod are in close contact with the inner wall of the stirring tank, the top of the stirring tank is fixedly provided with a third motor, the output end of the third motor is arranged through the stirring tank and is rotatably connected with the stirring rod, and the bottom of the stirring tank is provided with a discharging opening.

[0014] In a possible design, the stirring tank is fixedly provided with a discharging pipe at the discharging opening, and the discharging pipe is fixedly provided with an electromagnetic valve, and the electromagnetic valve is electrically connected with the PLC controller.

[0015] In the present application, first, when the device is started, the PLC controller controls the second motors of the plurality of feeding assemblies to start according to the preset formula and process parameters, the plurality of second motors drive the corresponding second screw rods to rotate, and the raw materials in the storage tanks are sent into the same feeding pipe through the discharging pipes connected therewith, since a plurality of storage tanks are arranged, the simultaneous addition of different raw materials is realized, in the process, the first motor is started to drive the first screw rod to rotate, and the raw materials in the feeding pipe are transported into the stirring tank.

[0016] When the raw material is added into the feeding pipe, the weighing sensor monitors the weight change of the storage tank and the raw material in the storage tank in real time, the weight of the discharged material is calculated by the weight loss, when the preset amount of material is approached, the PLC controller controls the second motor to stop, and then the weight lost when the storage tank is stationary is obtained, then, the second motor is started and stopped for multiple times and the rotating speed of the second motor is adjusted to control the discharging amount of the second screw rod, and the accurate weighing is completed in cooperation with the weighing sensor;

[0017] When the raw material enters the stirring tank, the PLC controller controls the third motor to start, the third motor drives the stirring rod to rotate in the stirring tank, and the raw material is fully stirred, the two sides of the stirring rod are attached to the inner wall of the stirring tank, so that the uniformity and dead angle free of stirring are ensured, when the stirring reaches the preset time or uniformity requirement, the PLC controller controls the third motor to stop working, and controls the electromagnetic valve to open, so that the uniformly mixed polyurethane raw material is discharged through the discharge pipe discharge device for subsequent production.

[0018] Beneficial effects: in the utility model, the polyurethane production automatic quantitative feeding device can realize simultaneous quantitative feeding of multiple raw materials through the setting of multiple feeding assemblies, and greatly improves the production efficiency;

[0019] In the utility model, the polyurethane production automatic quantitative feeding device can ensure the accuracy of raw material ratio at the same time through the weighing assembly arranged on the feeding assembly, thereby improving the product quality;

[0020] In the utility model, the polyurethane production automatic quantitative feeding device can realize uniform mixing of different materials through the setting of the stirring assembly, and further improves the product quality;

[0021] In the utility model, the polyurethane production automatic quantitative feeding device is simple and convenient to operate, has high automation degree, reduces the difficulty and labor intensity of manual operation, and improves the safety and stability of production;

[0022] In the utility model, multiple feeding assemblies are arranged, which can realize simultaneous quantitative feeding of multiple raw materials, greatly improve the production efficiency, and the weighing assembly on the feeding assembly can ensure the accuracy of raw material ratio at the same time, thereby improving the product quality, the setting of the stirring assembly can realize uniform mixing of different materials, further improve the product quality, and the operation is simple and convenient, has high automation degree, and reduces the difficulty and labor intensity of manual operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A three-dimensional structure schematic view of the polyurethane production automatic quantitative feeding device is provided in the utility model;

[0024] Figure 2 A three-dimensional structure schematic view of the storage tank of the automatic quantitative feeding device for polyurethane production is provided in the utility model.

[0025] Figure 3 A three-dimensional structure schematic view of the storage tank of the automatic quantitative feeding device for polyurethane production is provided in the utility model.

[0026] Figure 4 A three-dimensional structure schematic view of the storage tank of the automatic quantitative feeding device for polyurethane production is provided in the utility model.

[0027] In the figure: 1, first support; 2, second support; 3, fixed block; 4, feeding pipe; 5, first screw rod; 6, first motor; 7, limit block; 8, storage tank; 9, feeding pipe; 10, discharge pipe; 11, second screw rod; 12, second motor; 13, fixing lug; 14, weighing sensor; 15, PLC controller; 16, stirring tank; 17, third motor; 18, stirring rod; 19, discharge pipe; 20, electromagnetic valve. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0029] Embodiment 1: refer to Figures 1-4 A quantitative feeding device, including first support 1, second support 2, fixed block 3, feeding pipe 4, first screw rod 5, first motor 6 and PLC controller 15 and other components. On the top of the first support 1, the second support 2 is fixedly arranged, and the fixed block 3 is fixed on one side of the second support 2. The feeding pipe 4 is fixedly arranged in the second support 2 through the support plate, and one end of the feeding pipe 4 is sealed near the fixed block 3. On one side of the fixed block 3, the first screw rod 5 is arranged through rotary connection, one end of the first screw rod 5 extends to the inside of the feeding pipe 4, which is used for pushing the material. The other end of the first screw rod 5 penetrates the fixed block 3 and is fixedly connected with the output end of the first motor 6 fixedly arranged on the other side of the fixed block 3. Through the driving of the first motor 6, the rotation of the first screw rod 5 can be realized, and then the conveying of the material is completed. On one side of the first support 1, the PLC controller 15 is also fixedly arranged, which is used for the automatic control of the whole device. In addition, the device also includes a plurality of feeding assemblies, weighing assemblies and stirring assemblies.

[0030] For the feeding assembly, it specifically includes a storage tank 8, a feeding pipe 9, a discharging pipe 10, a second screw rod 11 and the like. The storage tank 8 is slidably penetrated through the top of the second support 2 and extends into the inside of the second support 2, for storing raw materials. On the top of the storage tank 8, the feeding pipe 9 is fixedly communicated, for facilitating the addition of raw materials. The bottom of the storage tank 8 is slidably communicated with the discharging pipe 10, which is fixedly communicated with the feeding pipe 4, to ensure that the raw materials can smoothly enter the feeding pipe 4. On the inner wall of the top of the storage tank 8, the second screw rod 11 is rotatably connected, which extends into the inside of the discharging pipe 10, for pushing the raw materials in the storage tank 8 to the discharging pipe 10. The top of the second support 2 is fixedly connected with a second motor 12, and the top end of the second screw rod 11 penetrates through the top of the second support 2 and is fixedly connected with the output end of the second motor 12. Through the driving of the second motor 12, the rotation of the second screw rod 11 can be realized, and then the quantitative addition of raw materials can be completed. At the same time, the second motor 12 is electrically connected with the PLC controller 15, to realize automatic control.

[0031] In order to ensure the stability of the storage tank 8, two limiting blocks 7 are symmetrically and fixedly arranged on the top of the second support 2, and the top of each of the two limiting blocks 7 is provided with a limiting groove. The outer wall of the storage tank 8 is symmetrically provided with two fixed ears 13 corresponding to the limiting grooves, and the fixed ears 13 are slidably fitted in the corresponding limiting grooves, so as to limit the movement range of the storage tank 8.

[0032] For the weighing assembly, it includes two weighing sensors 14. The two weighing sensors 14 are fixedly arranged on the inner wall of the bottom of the corresponding limiting groove, and each of the two fixed ears 13 is placed on the top of the corresponding weighing sensor 14. Through the weighing sensor 14, the weight of the storage tank 8 and the raw materials in the inside of the storage tank 8 can be monitored in real time, and then it can be judged whether the addition amount of raw materials reaches the preset value. At the same time, each of the two weighing sensors 14 is electrically connected with the PLC controller 15, to realize real-time transmission of data and automatic control.

[0033] For the stirring assembly, it includes a stirring tank 16, a third motor 17 and a stirring rod 18 and the like. The stirring tank 16 is fixedly arranged on the top of the first support 1, one end of the feeding pipe 4 penetrates through the stirring tank 16 and is communicated with the stirring tank 16, to ensure that the raw materials can smoothly enter the stirring tank 16. On the inner wall of the top of the stirring tank 16, the stirring rod 18 is rotatably connected, and the two sides of the stirring rod 18 are in close contact with the inner wall of the stirring tank 16, to ensure the stirring effect. The top of the stirring tank 16 is fixedly provided with the third motor 17, and the output end of the third motor 17 penetrates through the stirring tank 16 and is rotatably connected with the stirring rod 18. Through the driving of the third motor 17, the rotation of the stirring rod 18 can be realized, and then the raw materials in the stirring tank 16 can be mixed. The bottom of the stirring tank 16 is provided with a discharge port, to facilitate the discharge of the mixed materials.

[0034] The application can be used in the technical field of polyurethane production, and can also be used in other fields applicable to the application.

[0035] Embodiment 2: Reference Figures 2-4 On the basis of Embodiment 1, an automatic quantitative feeding device for polyurethane production is improved, which is applied to the technical field of polyurethane production. In order to control the discharge of the material, a discharge pipe 19 is fixedly arranged at the discharge port of the stirring tank 16, and an electromagnetic valve 20 is fixedly arranged on the discharge pipe 19. The opening and closing of the electromagnetic valve 20 is controlled by the PLC controller 15, so that the quantitative discharge of the material can be realized. At the same time, the electromagnetic valve 20 is electrically connected with the PLC controller 15, so that the automatic control is realized.

[0036] However, as known by those skilled in the art, the working principles and wiring methods of the first motor 6, the second motor 12 and the third motor 17 are common, which belong to conventional means or common general knowledge, and will not be described here. Those skilled in the art can make any selection or arrangement according to their needs or convenience.

[0037] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A kind of automatic dosing device for polyurethane production, comprising first support (1), the top of the first support (1) is fixedly provided with second support (2), one side of the second support (2) is fixedly provided with fixed block (3), the inside of the second support (2) is fixedly provided with feeding tube (4) by support plate, the end of the feeding tube (4) close to fixed block (3) is sealed, one side of the fixed block (3) is rotatably connected with first screw rod (5), and one end of the first screw rod (5) extends to the inside of feeding tube (4), the other side of the fixed block (3) is fixedly provided with first motor (6), the other end of the first screw rod (5) penetrates fixed block (3) and is fixedly connected with the output end of first motor (6), one side of the first support (1) is fixedly provided with PLC controller (15), characterized in that, The device further comprises: A plurality of feeding assemblies, each of which is arranged on the second support (2) and used for realizing simultaneous feeding of different raw materials; A plurality of weighing assemblies, each of which is arranged on the top of the second support (2) and used for realizing quantitative feeding of different raw materials in cooperation with the feeding assemblies; A stirring assembly arranged on the first support (1) and used for accelerating mixing of different materials.

2. The automatic dosing device for polyurethane production according to claim 1, characterized in that, The feeding assembly comprises a storage tank (8) sliding through the top of the second support (2) and extending into the second support (2), a feeding pipe (9) fixedly connected to the top of the storage tank (8), a discharging pipe (10) slidingly connected to the bottom of the storage tank (8) and fixedly connected to the feeding pipe (4), a second screw rod (11) rotatably connected to the inner wall of the top of the storage tank (8) and extending into the discharging pipe (10), a second motor (12) fixedly connected to the top of the second support (2), and an output end of the second motor (12) fixedly connected to the top end of the second screw rod (11), wherein the second motor (12) is electrically connected to the PLC controller (15).

3. The automatic dosing device for polyurethane production according to claim 2, characterized in that, The feeding assembly further comprises two limiting blocks (7) fixedly arranged on the top of the second support (2) in a symmetrical manner, and a limiting groove is formed in the top of each of the two limiting blocks (7), and two fixed lugs (13) corresponding to the limiting grooves are arranged on the outer wall of the storage tank (8) in a symmetrical manner, and the fixed lugs (13) are slidingly fitted in the corresponding limiting grooves.

4. The automatic dosing device for polyurethane production according to claim 3, characterized in that, The weighing assembly comprises two weighing sensors (14) fixedly arranged on the inner wall of the bottom of the corresponding limiting groove, and the two fixed lugs (13) are placed on the top of the corresponding weighing sensor (14), and the two weighing sensors (14) are electrically connected to the PLC controller (15).

5. The automatic dosing device for polyurethane production according to claim 1, characterized in that, The stirring assembly comprises a stirring tank (16) fixedly arranged on the top of the first support (1), one end of the feeding pipe (4) penetrating through the stirring tank (16) and being in communication with the stirring tank (16), a stirring rod (18) rotatably connected to the inner wall of the top of the stirring tank (16) and abutting against the inner wall of the stirring tank (16) on both sides, a third motor (17) fixedly arranged on the top of the stirring tank (16), and an output end of the third motor (17) penetrating through the stirring tank (16) and being rotatably connected to the stirring rod (18), and a discharge port is formed in the bottom of the stirring tank (16).

6. The automatic dosing device for polyurethane production according to claim 5, characterized in that, The stirring tank (16) is fixedly provided with a discharging pipe (19) at the discharge port, and an electromagnetic valve (20) is fixedly arranged on the discharging pipe (19), and the electromagnetic valve (20) is electrically connected to the PLC controller (15).

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