Accurate proportioning metering device for raw materials of phenolic resin production

Abstract

The utility model discloses phenolic resin production raw material precision proportioning metering device, including proportioning box, the upper portion of proportioning box is provided with liquid storage tank and solid storage tank, liquid storage tank and solid storage tank all are connected through support and the lateral wall of proportioning box, the lower extreme of liquid storage tank is connected with first discharge pipe, and the lower extreme of first discharge pipe and proportioning box intercommunication, install valve and flow sensor on first discharge pipe, the lower portion of solid storage tank is installed with first feed auger, and first feed auger and solid storage tank are intercommunication through the downcomer. This phenolic resin production raw material precision proportioning metering device, through adopt high accuracy's measuring element and automation control technology, can control raw material proportioning error in the extremely small range, effectively improved the stability of phenolic resin product quality, reduced the rate of defective products, improved the market competitiveness of product.

Description

Technical Field

[0001] This utility model relates to the field of phenolic resin production technology, specifically to a device for precise proportioning and metering of raw materials for phenolic resin production. Background Technology

[0002] Phenolic resin, as an important synthetic resin, is widely used in many fields such as adhesives, coatings, molding compounds, friction materials, and insulating materials. In the production process of phenolic resin, the accurate proportioning and metering of raw materials is crucial, as it directly affects the performance and quality of phenolic resin. If the raw material proportions are inaccurate, it may lead to problems such as incomplete resin curing, insufficient mechanical strength, and poor heat resistance, which seriously affect product quality and production efficiency.

[0003] In the traditional phenolic resin production process, the proportioning and metering of raw materials mostly rely on manual operation. Workers use experience and simple measuring tools, such as graduated cylinders and scales, to weigh and proportion raw materials such as phenol, formaldehyde, and catalysts. This method has many drawbacks: manual operation is affected by factors such as the worker's skill level and working condition, making it difficult to guarantee the accuracy of each proportion; manual proportioning is cumbersome, requiring workers to weigh and transfer various raw materials sequentially, consuming a lot of time and manpower. Especially in large-scale production, the speed of manual proportioning is far from meeting production needs, seriously restricting the improvement of production efficiency and increasing production costs. Therefore, we propose a precise proportioning and metering device for phenolic resin production raw materials to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a precise metering device for the proportioning of raw materials in phenolic resin production, in order to solve the problems mentioned in the background art, where the metering of raw materials in the current phenolic resin production process relies on manual operation, resulting in large errors and low efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precise proportioning and metering device for phenolic resin production raw materials, including a proportioning box, a liquid storage tank and a solid storage tank are arranged above the proportioning box, the liquid storage tank and the solid storage tank are both connected to the side wall of the proportioning box through a bracket, the lower end of the liquid storage tank is connected to a first discharge pipe, the lower end of the first discharge pipe is connected to the proportioning box, and a valve and a flow sensor are installed on the first discharge pipe; A first conveying auger is installed below the solid storage tank. The first conveying auger and the solid storage tank are connected to each other through a discharge pipe. A second discharge pipe is connected to the lower left end of the first conveying auger. An electronic scale is installed at the lower left end of the first conveying auger. A guide pipe is sleeved on the outside of the second discharge pipe. A double-rod hydraulic cylinder is installed on the rear wall of the guide pipe. The output end of the double-rod hydraulic cylinder is connected to a movable seat. A limit rod passes through the front side of the upper end of the movable seat. The middle part of the limit rod is connected to the outer wall of the guide pipe. A motor is installed on the upper side of the mixing tank. The output end of the motor is connected to a stirring rod. The lower end of the stirring rod is connected to a scraper. A second conveying auger is installed at the lower end of the mixing tank. The second conveying auger and the mixing tank are connected to each other through a connecting pipe. The lower left end of the second conveying auger is connected to a discharge pipe.

[0006] Preferably, the liquid storage tanks and solid storage tanks are distributed at equal angles about the longitudinal centerline of the mixing tank, and the liquid storage tanks and solid storage tanks are distributed alternately.

[0007] Preferably, the scrapers are distributed at an angle and are in contact with the inclined inner wall of the mixing tank.

[0008] Preferably, there is a gap between the inner wall of the guide tube and the outer wall of the second discharge tube, and there is a gap between the outer wall of the section of the guide tube that penetrates the electronic scale and the inner wall of the electronic scale.

[0009] Preferably, the movable seat and the limiting rod form a sliding structure, and the movable seat is symmetrically distributed about the longitudinal centerline of the guide tube.

[0010] Preferably, the bottom of the inner side of the movable seat is inclined, and the two movable seats are tightly fitted together in the initial state.

[0011] Compared with the prior art, the beneficial effects of this utility model are: (1) The precise metering device for the production of phenolic resin raw materials, by adopting high-precision metering elements and automated control technology, can control the raw material ratio error within a very small range, effectively improving the stability of the quality of phenolic resin products, reducing the defect rate, and improving the market competitiveness of the products. (2) The phenolic resin production raw material precise proportioning and metering device has an automated operation process that greatly reduces manual intervention. It eliminates the need for manual weighing and proportioning of raw materials one by one, and the precise proportioning of raw materials reduces the waste of raw materials caused by inaccurate proportioning. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from below; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the double-rod hydraulic cylinder of this utility model; Figure 5 This is a schematic diagram of the limiting rod structure of this utility model; Figure 6 This is a cross-sectional view of the movable seat of this utility model.

[0013] In the diagram: 1. Mixing tank; 2. Support frame; 3. Liquid storage tank; 4. First discharge pipe; 5. Valve; 6. Flow sensor; 7. Solid storage tank; 8. Feed pipe; 9. First conveying auger; 10. Second discharge pipe; 11. Electronic scale; 12. Scraper; 13. Guide pipe; 14. Limiting rod; 15. Double-rod hydraulic cylinder; 16. Moving seat; 17. Discharge pipe; 18. Motor; 19. Stirring rod; 20. Connecting pipe; 21. Second conveying auger. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-6 The present invention provides the following technical solution: a precise proportioning and metering device for phenolic resin production raw materials, including a proportioning box 1, a liquid storage tank 3 and a solid storage tank 7 are arranged above the proportioning box 1, the liquid storage tank 3 and the solid storage tank 7 are both connected to the side wall of the proportioning box 1 through a bracket 2, the lower end of the liquid storage tank 3 is connected to a first discharge pipe 4, the lower end of the first discharge pipe 4 is connected to the proportioning box 1, and a valve 5 and a flow sensor 6 are installed on the first discharge pipe 4; a first conveying auger 9 is installed below the solid storage tank 7, the first conveying auger 9 and the solid storage tank 7 are connected to each other through a discharge pipe 8, the lower left end of the first conveying auger 9 is connected to a second discharge pipe 10, and an electronic scale 11 is installed at the lower left end of the first conveying auger 9; Furthermore, both the liquid storage tank 3 and the solid storage tank 7 are distributed at equal angles about the longitudinal centerline of the mixing tank 1. The liquid storage tank 3 and the solid storage tank 7 are staggered to each other, so that liquid and solid raw materials can be alternately transported into the mixing tank 1, making it easy to mix them together. The outer side of the second discharge pipe 10 is fitted with a guide pipe 13. A double-rod hydraulic cylinder 15 is installed on the rear wall of the guide pipe 13. The output end of the double-rod hydraulic cylinder 15 is connected to a movable seat 16. A limit rod 14 passes through the front side of the upper end of the movable seat 16. The middle part of the limit rod 14 is connected to the outer wall of the guide pipe 13. Furthermore, there is a gap between the inner wall of the guide tube 13 and the outer wall of the second discharge tube 10, and there is a gap between the outer wall of the section of the guide tube 13 that passes through the electronic scale 11 and the inner wall of the electronic scale 11, so that the electronic scale 11 can be used to weigh the materials in the guide tube 13 and the moving seat 16. Furthermore, the movable seat 16 and the limiting rod 14 form a sliding structure. The movable seat 16 is symmetrically distributed about the longitudinal center line of the guide tube 13, which supports the movable seat 16 and limits the movable seat 16 to the guide tube 13. Furthermore, the bottom of the inner side of the movable seat 16 is inclined. In the initial state, the two movable seats 16 are closely fitted together, which allows the raw material to be smoothly concentrated on the movable seat 16. When the movable seat 16 is opened, the raw material falls quickly from the movable seat 16. A motor 18 is installed on the upper side of the mixing tank 1. The output end of the motor 18 is connected to a stirring rod 19. The lower end of the stirring rod 19 is connected to a scraper 12. A second conveying auger 21 is installed at the lower end of the mixing tank 1. The second conveying auger 21 and the mixing tank 1 are connected to each other through a connecting pipe 20. The lower left end of the second conveying auger 21 is connected to a discharge pipe 17. Furthermore, the scraper 12 is distributed at an angle and is in contact with the inclined inner wall of the mixing tank 1. The scraper 12 is used to scrape and clean the inner wall of the mixing tank 1. Specifically, when using this precise proportioning and metering device for phenolic resin production raw materials, the openings at the top of the liquid storage tank 3 and the solid storage tank 7 are opened, and the raw materials are stored in the corresponding tanks. The operator selects the formula corresponding to the phenolic resin product to be produced on the operating interface of the control unit. The control unit automatically calculates the required amount of each raw material according to the selected formula and sends control commands. For liquid raw materials, such as phenol and formaldehyde, the control unit opens the valve 5 on the first discharge pipe 4 connected to the lower end of the liquid storage tank 3. The raw material flows to the flow sensor 6 through the first discharge pipe 4. The flow sensor 6 monitors the flow rate of the raw material in real time and feeds back the flow data to the control unit. When the flow rate reaches the preset value, the control unit controls the valve 5 to close and stop the raw material delivery. The liquid raw material enters the proportioning box 1 from the first discharge pipe 4. For solid raw materials, such as solid catalysts and fillers, the control unit starts the first conveying auger 9. The raw materials in the solid storage tank 7 enter the first conveying auger 9 through the discharge pipe 8. The first conveying auger 9 transports the solid raw materials from the solid storage tank 7 to the second discharge pipe 10 and falls into the moving seat 16. The weight of the raw materials is weighed in real time by the electronic scale 11 and the data is transmitted to the control unit. When the preset weight is reached, the control unit controls the first conveying auger 9 to stop discharging and controls the double-rod hydraulic cylinder 15 to work. The double-rod hydraulic cylinder 15 pushes the moving seat 16 to move away from each other. At this time, the other side of the moving seat 16 slides on the limit rod 14 to ensure the horizontal movement of the moving seat 16. The solid raw materials fall from the moving seat 16 into the proportioning box 1. Various raw materials, after precise proportioning and metering, are concentrated in the proportioning tank 1. Simultaneously, the motor 18 is powered on, controlling the rotation of the stirring rod 19 connected to the output end to mix the various raw materials. At the same time, the scraper 12 connected to the stirring rod 19 rotates synchronously to scrape and clean the inner wall of the proportioning tank 1, causing the mixed material to fall from the connecting pipe 20 into the second conveying auger 21. The second conveying auger 21 is powered on and operates. Through the conveying of the second conveying auger 21, the mixed raw materials are transported through the discharge pipe 17 to the subsequent reaction vessel or other processing equipment to enter the synthesis reaction stage of phenolic resin. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0016] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precise metering device for raw materials in phenolic resin production, comprising a mixing tank (1), characterized in that: A liquid storage tank (3) and a solid storage tank (7) are provided above the mixing tank (1). The liquid storage tank (3) and the solid storage tank (7) are connected to the side wall of the mixing tank (1) through a bracket (2). The lower end of the liquid storage tank (3) is connected to a first discharge pipe (4). The lower end of the first discharge pipe (4) is connected to the mixing tank (1). A valve (5) and a flow sensor (6) are installed on the first discharge pipe (4). A first conveying auger (9) is installed below the solid storage tank (7). The first conveying auger (9) and the solid storage tank (7) are connected to each other through a discharge pipe (8). A second discharge pipe (10) is connected to the lower left end of the first conveying auger (9). An electronic scale (11) is installed at the lower left end of the first conveying auger (9). A guide pipe (13) is sleeved on the outside of the second discharge pipe (10). A double-rod hydraulic cylinder (15) is installed on the rear wall of the guide pipe (13). The output end of the double-rod hydraulic cylinder (15) is connected to a movable seat (16). A limit rod (14) passes through the front side of the upper end of the movable seat (16). The middle part of the limit rod (14) is connected to the outer wall of the guide pipe (13). A motor (18) is installed on the upper side of the mixing tank (1). The output end of the motor (18) is connected to a stirring rod (19). The lower end of the stirring rod (19) is connected to a scraper (12). A second conveying auger (21) is installed at the lower end of the mixing tank (1). The second conveying auger (21) and the mixing tank (1) are connected to each other through a connecting pipe (20). The lower left end of the second conveying auger (21) is connected to a discharge pipe (17).

2. The precise proportioning and metering device for phenolic resin production raw materials according to claim 1, characterized in that: The liquid storage tank (3) and the solid storage tank (7) are distributed at equal angles about the longitudinal centerline of the mixing tank (1), and the liquid storage tank (3) and the solid storage tank (7) are distributed alternately.

3. The precise proportioning and metering device for phenolic resin production raw materials according to claim 1, characterized in that: The scraper (12) is distributed at an angle and is in contact with the inclined inner wall of the mixing box (1).

4. The precise proportioning and metering device for phenolic resin production raw materials according to claim 1, characterized in that: There is a gap between the inner wall of the guide pipe (13) and the outer wall of the second discharge pipe (10), and there is a gap between the outer wall of the section of the guide pipe (13) that passes through the electronic scale (11) and the inner wall of the electronic scale (11).

5. The precise proportioning and metering device for phenolic resin production raw materials according to claim 1, characterized in that: The movable seat (16) and the limiting rod (14) form a sliding structure, and the movable seat (16) is symmetrically distributed about the longitudinal center line of the guide tube (13).

6. The precise proportioning and metering device for phenolic resin production raw materials according to claim 1, characterized in that: The bottom of the inner side of the movable seat (16) is inclined, and the two movable seats (16) are tightly fitted in the initial state.

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