Stainless steel feeding hopper with pneumatic stirring

Abstract

The utility model relates to feeding equipment technical field, concretely is a stainless steel feeding hopper with pneumatic stirring. Including pneumatic stirring subassembly, pneumatic valve, conical downcomer, Y type feeding mouth and detachable end cap, Y type feeding mouth includes manual feeding mouth and pipeline automatic feeding mouth, the conical downcomer bottom is connected through the flange pneumatic valve, and the pneumatic valve is connected through the flange with the reaction kettle of outside, and pneumatic stirring subassembly is installed on detachable end cap, the utility model discloses adopt closed stirring and feed, can effectively solve the reaction kettle and throw in the process of initiator solvent, powder initiator and organic solution are not sufficient and uneven, and the problem that organic solution volatilization forms flammable explosive and toxic and harmful gas, adds the pneumatic stirring mechanism on the feeding hopper, with spiral structure in the feeding hopper direct stirring material, makes powder material in organic solution dissolves uniformly and sufficiently, installs nitrogen tube and can realize nitrogen seal, prevents organic solution volatilization.

Description

Technical Field

[0001] This utility model relates to the technical field of feeding equipment, specifically a stainless steel feeding hopper with pneumatic stirring. Background Technology

[0002] In the process of producing adhesives through chemical polymerization, the production equipment is equipped with Class A explosion-proof devices due to the involvement of powdered initiators and ethyl acetate organic solutions. During the polymerization reaction, the dissolution of the initiator in ethyl acetate is the initial step in preparing high-strength, weather-resistant adhesives. It is a fundamental and crucial step in the polymerization reaction. Ethyl acetate, as a mixed solution, has both solubility and reactivity-regulating functions.

[0003] Currently, the preparation of the initiator solution requires manual stirring of the powdered initiator in ethyl acetate. Ethyl acetate exposed to air can form a flammable and explosive mixture with its vapor; high concentrations of ethyl acetate are irritating to the eyes, nose, and throat, and inhalation can cause progressive anesthesia and damage to internal organs; the stirring speed is difficult to control, easily generating excessive heat and static electricity; and manual stirring can easily result in uneven mixing, with the powdered initiator not completely dissolving in the ethyl acetate solution.

[0004] To solve the above problems, this utility model provides a stainless steel feeding hopper with pneumatic stirring. Utility Model Content

[0005] The purpose of this invention is to provide a stainless steel feeding hopper with pneumatic stirring to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A stainless steel feeding hopper with pneumatic agitation includes a pneumatic agitation assembly, a pneumatic valve, a conical feeding hopper, a Y-shaped feeding port, and a detachable end cap.

[0008] Y-type feeding ports include manual feeding ports and automatic pipeline feeding ports;

[0009] The bottom of the conical hopper is connected to a pneumatic valve via a flange, and the pneumatic valve is connected to the external reactor via a flange.

[0010] The pneumatic mixing assembly is mounted on a detachable end cap and includes a pneumatic motor, a reducer, and a screw agitator for mixing materials.

[0011] In a more optimized configuration, the conical hopper is connected to the detachable end cap via a quick-connect flange; the detachable end cap is equipped with a Y-shaped feeding port, a nitrogen inlet, and a pressure gauge inlet for feeding materials.

[0012] In a more optimized configuration, the pneumatic motor includes a cylinder block, a cylinder, and a crank-slider mechanism, wherein the crank-slider mechanism includes a connecting rod, a crankshaft, a piston, and a crank crank.

[0013] The cylinders are evenly distributed on the circumference of the pneumatic motor housing, and there are five cylinders; the crank-slider mechanism has five cylinders arranged in a star shape around the center of the pneumatic motor.

[0014] The piston is slidably connected inside the cylinder, and the five connecting rods are all mounted on the crankshaft of a common crankshaft. With this configuration, the compressed gas sequentially pushes the pistons, driving the crankshaft to rotate continuously. Therefore, the pneumatic motor experiences torque and speed output pulsations of a certain magnitude.

[0015] In a more optimized manner, the screw agitator of the pneumatic stirring assembly has a 10mm gap between itself and the inner wall of the vertical end of the conical hopper, and a 20mm gap between itself and the flange at the bottom of the conical hopper, to facilitate the stirring and dissolution of the powder initiator and the organic solution.

[0016] In a more optimized manner, the feeding hopper and pneumatic stirring assembly are made entirely of 304 stainless steel and are connected to the external reaction vessel to prevent solvent corrosion.

[0017] In a more optimized manner, the inner and outer walls of the conical hopper and the detachable end cap are polished to 300 mesh, with a roughness Ra of 0.3 to 0.4 μm.

[0018] In a more optimized manner, the automatic feed port of the pipeline is connected to the feed line using a 1.5-inch lever-type quick connector to facilitate pipeline assembly and disassembly.

[0019] In a more optimized manner, the nitrogen inlet is connected to the nitrogen pipeline using a 304 stainless steel flexible hose with four-point threads.

[0020] In a more optimized manner, the pressure gauge inlet is... A chuck is used to facilitate the removal and replacement of the pressure gauge.

[0021] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0022] (1) In this utility model, installing a silencer inside the pneumatic motor can reduce the harsh noise generated when the gas is discharged at high speed by damping the airflow speed and increasing the exhaust area, while improving the quality of the working environment and the safety of the equipment.

[0023] (2) In this utility model, the pneumatic motor uses compressed air as the working medium to avoid generating electric sparks or high temperatures, thus making it suitable for flammable and explosive environments. Its explosion-proof design can prevent the risk of explosion caused by electrical faults.

[0024] (3) In this utility model, the gearbox can meet the power requirements of large load equipment, while reducing the output speed and the moment of inertia decreases according to the square of the reduction ratio, which facilitates rapid start-up and precise speed adjustment, reduces mechanical shock and vibration, and improves the stability of equipment operation.

[0025] (4) In this utility model, the screw agitator is suitable for mixing and heat transfer of medium and high viscosity liquids, which can significantly improve heat transfer efficiency; combined with the screw ribbon design, it can reduce the friction between the material and the agitator wall and reduce the stirring resistance; the screw ribbon outer corridor is designed to be close to the feed hopper, which enhances the internal and external circulation of the liquid and improves the mixing uniformity.

[0026] (5) In this utility model, 304 stainless steel has good hot working properties such as stamping and bending, and no heat treatment hardening phenomenon, which makes it easy to manufacture complex hopper structures; at the same time, 304 stainless steel contains more than 18% chromium and more than 8% nickel, which can effectively resist the corrosion of organic solutions such as ethyl acetate and extend the service life of the body.

[0027] (6) In this utility model, during the polishing process, the surface of 304 stainless steel is made to achieve a mirror effect by removing the surface micro-defects and oxide layer, which significantly enhances the gloss and visual aesthetics; the surface is smoother after polishing, which reduces the adhesion and penetration of corrosive media, thereby reducing the risk of oxidation and rust and extending the service life; at the same time, it can increase the density of the surface microstructure, which indirectly improves the wear resistance and scratch resistance.

[0028] (7) In this utility model, a nitrogen pipe is set to realize the nitrogen sealing function. By covering the surface of ethyl acetate with nitrogen, the evaporation rate of ethyl acetate is reduced, material loss and environmental pollution are reduced; at the same time, air infiltration or vapor leakage is prevented, ensuring stable process conditions; nitrogen reduces the oxygen concentration to the combustion limit, avoiding the formation of flammable and explosive mixed gases; it can also effectively prevent static electricity accumulation, reduce gas flow friction, and reduce fire hazards. Attached Figure Description

[0029] Figure 1 Schematic diagram of the feeding hopper device for a stainless steel reactor with pneumatic stirring;

[0030] Figure 2 This is a schematic diagram of a detachable end cap;

[0031] Figure 3 This is a schematic diagram of a pneumatic motor.

[0032] Among them, 1. Y-type feeding port; 2. Manual feeding port; 3. Automatic pipeline feeding port; 4. Pressure gauge port; 5. Pneumatic motor; 6. Reducer; 7. Quick-install flange; 8. Removable end cap; 9. Conical hopper; 10. Screw agitator; 11. Flange; 12. Pneumatic valve; 13. Nitrogen port; 14. Pneumatic agitator assembly; 15. Cylinder body; 16. Connecting rod; 17. Cylinder; 18. Crankshaft; 19. Piston. Detailed Implementation

[0033] 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.

[0034] This utility model discloses a stainless steel feeding hopper with pneumatic stirring, such as Figure 1 As shown, it includes a pneumatic agitator, a pneumatic valve 12, a conical hopper 9, a Y-shaped feeding port 1, and a detachable end cap 8. The entire feeding hopper is made of 304 stainless steel, which can effectively resist the corrosion of organic solvents such as ethyl acetate and extend the service life of the tank. The inner and outer walls of the detachable end cap 8 and the conical hopper 9 are polished to 300 mesh using 304 stainless steel, which significantly enhances the gloss and visual appeal, reduces the adhesion and penetration of corrosive media, thereby reducing the risk of oxidation and rust, extending the service life, and increasing the density of the surface microstructure, which indirectly improves the wear resistance and scratch resistance.

[0035] like Figures 1 to 3 As shown, the Y-type feeding port 1 includes a manual feeding port 2 and an automatic pipeline feeding port 3. The automatic pipeline feeding port 3 is connected to the feed pipeline using a 1.5-inch lever-type quick connector, which facilitates personnel disassembly of the pipeline. The bottom of the conical hopper 9 is equipped with a pneumatic valve 12 through a flange 11. The pneumatic valve 12 is connected to the flange 11 on the reactor surface, which can realize the automatic feeding function of the initiator solution after it is uniformly dissolved.

[0036] The pneumatic agitator is fixed to the detachable end cap 8. The pneumatic agitator consists of a pneumatic motor 5, a reducer 6, and a screw agitator 10. The pneumatic agitator uses a screw agitator 10, which has a 10mm gap with the inner wall of the vertical end of the conical hopper 9 and a 20mm gap with the flange 11 at the bottom of the conical hopper 9. This reduces the friction between the material and the agitator wall, lowers the agitation resistance, enhances the internal and external circulation of the liquid, and improves the mixing uniformity. The conical hopper 9 is connected to the detachable end cap 8 by a quick-connect flange 7 to prevent the vapors of ethyl acetate from leaking through the gap between the quick-connect flange 7 and the detachable end cap 8, which could cause personnel to inhale toxic gases.

[0037] like Figure 2 As shown, the detachable end cap 8 is equipped with a Y-shaped feeding port 1, a nitrogen inlet 13, a pressure gauge inlet 4, and a pneumatic agitator. The pressure gauge inlet 4 is... The chuck facilitates the disassembly and replacement of pressure gauges; nitrogen port 13 uses a 304 stainless steel flexible hose with four-point threads to connect to the nitrogen pipeline, achieving nitrogen sealing.

[0038] like Figure 3 The pneumatic motor 5 shown consists of a cylinder body 15, connecting rods 16, cylinders 17, a crankshaft 18, pistons 19, and cranks. Five cylinders 17 are evenly distributed around the circumference of the pneumatic motor 5 housing. Five crank-slider mechanisms, composed of pistons 19, connecting rods 16, and crankshaft 18, are arranged in a star shape around the center of the pneumatic motor 5. The pistons 19 slide within the cylinders 17, and the five connecting rods 16 are mounted on a single crank of the shared crankshaft 18. Compressed gas sequentially pushes each piston 19, driving the crankshaft 18 to rotate continuously. Therefore, the pneumatic motor 5 exhibits torque and speed output pulsations of a certain magnitude.

[0039] The working process of this utility model is as follows:

[0040] Pneumatic valve 12 and nitrogen valve are closed, and quick-connect flange 7 is sealed. Add the powder initiator into the conical hopper 9 through the manual feed port 2, tighten the manual feed port 2 cover, open the pneumatic valve 12 of the automatic feed port 3, add a measured amount of ethyl acetate solution into the conical hopper 9, open the manual valve above the nitrogen port 13 to fill the sealed space of the conical feed hopper with a slight positive pressure of approximately 0.5 kPa, close the nitrogen manual valve, start the pneumatic motor 5, adjust the speed of the pneumatic motor 5 as needed to fully dissolve the powder initiator in the ethyl acetate solution, open the pneumatic valve 12 below the conical hopper 9, add the dissolved initiator solvent into the reactor, complete the feeding, and close the pneumatic valve 12.

[0041] This device enables the closed-loop feeding of ethyl acetate, preventing it from being exposed to air; and it also enables automatic stirring of the powder initiator and the ethyl acetate solution, solving the drawbacks of manual stirring, such as safety hazards, occupational hazards, and uneven and insufficient dissolution of the powder.

[0042] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A stainless steel feeding hopper with pneumatic stirring, characterized in that: It includes a pneumatic stirring assembly (14), a pneumatic valve (12), a conical hopper (9), a Y-shaped feeding port (1), and a detachable end cap (8); The Y-shaped feeding port (1) includes a manual feeding port (2) and an automatic feeding port (3) for pipelines; The bottom of the conical hopper (9) is connected to a pneumatic valve (12) via a flange (11), and the pneumatic valve (12) is connected to the external reaction vessel via the flange (11). The pneumatic stirring assembly (14) is mounted on a detachable end cap (8). The pneumatic stirring assembly (14) includes a pneumatic motor (5), a reducer (6), and a screw agitator (10) for stirring materials.

2. The stainless steel feeding hopper with pneumatic stirring according to claim 1, characterized in that: The conical hopper (9) is connected to the detachable end cap (8) via a quick-connect flange (7); the detachable end cap (8) is equipped with a Y-type feeding port (1), a nitrogen gas port (13), and a pressure gauge port (4) for feeding materials.

3. The stainless steel feeding hopper with pneumatic stirring according to claim 1, characterized in that: The pneumatic motor (5) includes a cylinder body (15), a cylinder (17) and a crank-slider mechanism, the crank-slider mechanism including a connecting rod (16), a crankshaft (18), a piston (19) and a crank. The cylinders (17) are evenly distributed on the circumference of the pneumatic motor (5) housing and there are five of them; the crank-slider mechanism is arranged in a star shape with the center of the pneumatic motor (5) as five of them. The piston (19) is slidably connected in the cylinder (17), and the five connecting rods (16) are mounted together on the crankshaft (18).

4. A stainless steel feeding hopper with pneumatic stirring according to claim 1, characterized in that: The screw agitator (10) of the pneumatic agitator assembly (14) has a 10mm gap with the inner wall of the vertical end of the conical hopper (9) and a 20mm gap with the flange (11) at the bottom of the conical hopper (9) to facilitate the mixing and dissolution of the powder initiator and the organic solution.

5. A stainless steel feeding hopper with pneumatic stirring according to claim 1, characterized in that: The conical hopper (9) and the pneumatic stirring assembly (14) are made of 304 stainless steel and are connected to the external reaction vessel to prevent solvent corrosion.

6. A stainless steel feeding hopper with pneumatic stirring according to claim 5, characterized in that: The inner and outer walls of the conical hopper (9) and the detachable end cap (8) are polished to 300 mesh, with a roughness Ra of 0.3~0.4μm.

7. A stainless steel feeding hopper with pneumatic stirring according to claim 1, characterized in that: The automatic feed port (3) of the pipeline is connected to the feed line with a 1.5-inch lever-type quick connector to facilitate pipeline disassembly and assembly.

8. A stainless steel feeding hopper with pneumatic stirring according to claim 2, characterized in that: The nitrogen inlet (13) is connected to the nitrogen pipeline using a 304 stainless steel flexible tubing with four-point threads.

9. A stainless steel feeding hopper with pneumatic stirring according to claim 2, characterized in that: The pressure gauge port (4) is a ø50.5mm chuck to facilitate the disassembly and replacement of the pressure gauge.

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