Gas protection type reaction kettle

Abstract

The utility model relates to a gas protection type reaction kettle, and relates to the technical field of reaction kettles, the gas protection type reaction kettle comprises a kettle body, a feeding pipe is arranged at the top of the kettle body, and a discharging pipe is arranged at the bottom of the kettle body, the gas protection type reaction kettle is characterized in that the top of the kettle body is slidably connected with a vertical pipe in the vertical direction, and the top end of the vertical pipe is communicated with a gas inlet pipe; the bottom end of the vertical pipe is communicated with an air inlet cylinder, a floating block is fixed to the bottom of the air inlet cylinder, an air outlet pipe is further arranged on the top of the kettle body, and the vertical pipe and the air outlet pipe are located on the two radial sides of the kettle body respectively and are far away from each other. The air inlet cylinder is located at the corner position, close to the liquid level, in the kettle body, and the air outlet pipe is located at the other corner position of the top of the kettle body, so that in the filling process of the protective gas, the diffusion path of the gas is optimized, original air can be exhausted more efficiently, the leakage amount of the protective gas from the air outlet pipe before the air is exhausted is reduced, and the service life of the protective gas is prolonged. The filling efficiency of the protective gas is improved, and waste of the protective gas is not prone to being caused.

Description

Technical Field

[0001] The present application relates to the technical field of reactors, and in particular to a gas-protected reactor. Background Art

[0002] A reactor, broadly defined as a container for physical and chemical reactions, achieves the reaction and mixing functions required by the process through structural design and parameter configuration. In the field of chemical machinery, various reactors are used in many production processes. In feed production, certain steps in the reaction must be free of oxygen to prevent oxidation of the raw materials. Therefore, a protective gas is filled into the reactor to isolate the oxygen.

[0003] The existing utility model patent with announcement number CN205731253U discloses a stirred reactor with gas protection function, including a reactor body, an agitator inside the reactor body, a feed port, an air inlet, a distillation port and a reflux port respectively provided on the upper part, and a discharge port provided on the lower part; the air inlet is connected to a first gas source and a vacuum pump through an air inlet three-way valve, the distillation port is connected to the inlet of the condenser through a distillation valve, and the outlet of the condenser is connected to a first manifold; the first manifold includes three branches, one branch is connected to the reflux port through a reflux valve, another branch is connected to the drain valve, and the last branch is connected to the gas protection device.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the gas inlet and outlet are both at the top of the reactor. According to the principle of gas diffusion, the protective gas filled into the reactor body can easily leave directly from the gas outlet, resulting in low efficiency of protective gas filling and easy waste of gas. Utility Model Content

[0005] The present application provides a gas-shielded reactor, which optimizes the position where gas enters the reactor, optimizes the path of gas diffusion, improves the gas filling efficiency, and is less likely to cause gas waste.

[0006] This application provides a gas-protected reactor, which adopts the following technical solution:

[0007] A gas-protected reactor comprises a reactor body, a feed pipe is provided on the top of the reactor body, a discharge pipe is provided on the bottom of the reactor body, the top of the reactor body is slidably connected to a vertical pipe in the vertical direction, the top of the vertical pipe is connected to an air inlet pipe, the bottom end of the vertical pipe is connected to an air inlet cylinder, a floating block is fixed to the bottom of the air inlet cylinder, and an air outlet pipe is also provided on the top of the reactor body, and the vertical pipe and the air outlet pipe are respectively located on both sides of the radial direction of the reactor body and are far away from each other.

[0008] By adopting the above technical solution, when the float contacts the liquid in the kettle, the float floats on the surface of the liquid, and the outlet of the air inlet is located near the liquid surface. Shielding gas is input into the vertical pipe through the air inlet pipe, and the shielding gas reaches the interior space of the kettle through the air inlet. As the gas diffuses, it gradually squeezes the original air in the kettle toward the other corner of the kettle, thereby squeezing the original air out of the air outlet. Because the air inlet is located in a corner of the kettle close to the liquid surface, and the air outlet is located at the other corner of the top of the kettle, the gas diffusion path is optimized during the shielding gas filling process, allowing the original air to be discharged more efficiently and reducing the amount of shielding gas leakage from the air outlet before the air is completely discharged. This improves the shielding gas filling efficiency and is less likely to cause shielding gas waste.

[0009] Optionally, the side of the air inlet cylinder facing the air outlet direction is flared, and the outlet of the air inlet cylinder is arranged to be inclined upward.

[0010] By adopting the above technical solution, the expanded air inlet cylinder structure can increase the size of the air inlet cylinder outlet end to reduce air intake resistance; and the upward-slanted air inlet cylinder outlet is set to optimize the gas diffusion path, making it easier for the kettle to be filled with protective gas.

[0011] Optionally, the outlet of the air inlet cylinder is provided with a waterproof breathable membrane, which completely closes the outlet of the air inlet cylinder. The outlet of the air inlet cylinder is fixed with a pressing frame by bolts, and the pressing frame presses the waterproof breathable membrane against the air inlet cylinder.

[0012] By adopting the above technical solution, the waterproof breathable membrane can allow protective gas to pass through while preventing water in the kettle from entering the air inlet cylinder in reverse; the pressure frame presses the waterproof breathable membrane against the air inlet cylinder to fix it and seals the outer edge at the same time.

[0013] Optionally, a cylinder is fixed to the outer side wall of the kettle body, and an output end of the cylinder is arranged upward and fixed with a connecting block, and the connecting block is fixed to the upper end of the vertical pipe.

[0014] By adopting the above technical solution, before the reaction, the cylinder is controlled to extend, and the piston rod end of the cylinder pulls the vertical pipe to move through the connecting block, raising the height of the air intake cylinder and the floating block to keep them away from the liquid surface, preventing the stirring blades and the stirred materials from affecting them.

[0015] Optionally, the contact position between the kettle body and the vertical pipe is sealed by providing a sealing ring.

[0016] By adopting the above technical solution, when the vertical pipe moves up and down or is stationary, the sealing ring can ensure that no air leakage occurs between the kettle body and the outer wall of the vertical pipe.

[0017] Optionally, valves are provided on the feed pipe, discharge pipe and air outlet pipe.

[0018] By adopting the above technical solution, the corresponding pipeline opening is adjusted through the valve.

[0019] Optionally, the gas outlet pipe is connected to a gas detector.

[0020] By adopting the above technical solution, the oxygen content discharged from the kettle is detected by a gas detector, thereby judging whether the original oxygen in the kettle has been exhausted.

[0021] Optionally, the kettle body is provided with a motor and a stirring shaft driven to rotate by the motor, and a plurality of stirring blades are fixed to the end of the stirring shaft located inside the kettle body.

[0022] By adopting the above technical solution, during the reaction, the motor drives the stirring blade to rotate, so that the materials in the kettle body can fully react.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The air inlet is located at a corner of the kettle body close to the liquid surface, and the air outlet is located at another corner of the top of the kettle body. During the filling process of the protective gas, the gas diffusion path is optimized, so that the original air can be discharged more efficiently and the leakage of protective gas from the air outlet before the air is completely discharged is reduced, thereby improving the filling efficiency of the protective gas and not easily causing the waste of protective gas.

[0025] 2. After the inflation is completed, the cylinder can lift the height of the air inlet cylinder and the floating block to prevent the stirring blades and the stirred materials from affecting them. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional diagram of a gas-protected reactor in an embodiment;

[0027] Figure 2 is a cross-sectional view of an embodiment;

[0028] Figure 3 yes Figure 2 A magnified view of point A in the figure;

[0029] Figure 4 It is a three-dimensional view of the air intake cylinder and the pressure frame of the embodiment.

[0030] Explanation of the accompanying symbols: 1. Kettle body; 11. Feed pipe; 12. Discharge pipe; 2. Vertical pipe; 13. Air inlet pipe; 14. Air outlet pipe; 15. Safety valve; 3. Cylinder; 31. Connecting block; 4. Motor; 41. Stirring shaft; 42. Stirring blade; 21. Sealing ring; 22. Air inlet cylinder; 23. Floating block; 24. Waterproof and breathable membrane; 25. Press frame; 5. Gas detector. DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the accompanying drawings.

[0032] Reference Figure 1 This embodiment discloses a gas-shielded reactor, comprising a reactor body 1, which is a cylindrical container and serves as a space for mixing materials and conducting reactions. A feed pipe 11 is provided at the top of the reactor body 1, through which the materials to be reacted are fed. A discharge pipe 12 is provided at the bottom of the reactor body 1, through which the materials that have completed the reaction are discharged. Valves are provided on both the feed pipe 11 and the discharge pipe 12, through which the opening of the pipes is adjusted. The corresponding valves need to be closed when the reaction is in progress. A vertically sliding vertical pipe 2 is connected to the top of the reactor body 1, and an air inlet pipe 13 is connected to the top of the vertical pipe 2, through which protective gas is fed into the reactor body 1. An air outlet pipe 14 is also provided at the top of the reactor body 1, through which the gas originally in the reactor body 1 is discharged. A safety valve 15 is also provided at the top of the reactor body 1. When the air pressure in the reactor body 1 is too high, part of the gas is spontaneously discharged through the safety valve 15.

[0033] A cylinder 3 is fixed to the outer wall of the kettle body 1. The output end of the cylinder 3 is positioned upward and fixed with a connecting block 31. The connecting block 31 is fixed to the upper end of the vertical tube 2. When the cylinder 3 extends, it drives the vertical tube 2 upward through the connecting block 31. When the air pressure in the cylinder 3 is released, the piston rod of the cylinder 3 and the vertical tube 2 fall downward under the action of their own weight.

[0034] The inlet pipe 13 is a flexible hose. The end of the pipe 13, away from the standpipe 2, is connected to a gas tank filled with shielding gas at a pressure above atmospheric pressure. A solenoid valve is installed at the outlet of the tank to control the flow of shielding gas into the pipe 13. A joint securely connects the pipe 13 to the upper end of the standpipe 2.

[0035] Reference Figure 2 The kettle body 1 is provided with a motor 4 and a stirring shaft 41 driven to rotate by the motor 4. The motor 4 is fixed to the top surface of the kettle body 1. The upper end of the stirring shaft 41 is rotatably connected to the kettle body 1. A plurality of stirring blades 42 are fixed to the end of the stirring shaft 41 located inside the kettle body 1. The motor 4 drives the stirring shaft 41 to rotate, and the stirring blades 42 stir the material and liquid in the kettle body 1 to ensure that the reaction proceeds fully.

[0036] Reference Figure 3 The contact point between the kettle body 1 and the vertical pipe 2 is sealed by a sealing ring 21. The top of the kettle body 1 has a cylindrical protrusion, and the sealing ring 21 is installed in this protrusion. The kettle body 1 has an annular groove for the sealing ring 21 to install. The inner wall of the sealing ring 21 is tightly pressed against the vertical pipe 2. When the vertical pipe 2 moves up and down or is stationary, the sealing ring 21 can ensure that there is no air leakage between the kettle body 1 and the outer wall of the vertical pipe 2.

[0037] Reference Figure 2 and Figure 4 The bottom end of the vertical pipe 2 is connected to the air inlet cylinder 22, and a float 23 is fixed to the bottom of the air inlet cylinder 22. Both the vertical pipe 2 and the air inlet cylinder 22 are made of stainless steel. The bottom end of the vertical pipe 2 is closed, and the vertical pipe 2 is connected to the air inlet cylinder 22 through an opening at the bottom of the side wall. The contact part between the vertical pipe 2 and the air inlet cylinder 22 is fixed and sealed by welding. The float 23 is made of foam plastic, which has a low density and can generate a large buoyancy. The side of the float 23 facing the inner wall of the kettle body 1 is an arc surface that fits the shape of the inner wall of the kettle body 1. When the vertical pipe 2 moves up and down, the float 23 slides in contact with the inner wall of the kettle body 1 through the arc surface, which plays a sliding guide effect and reduces the shaking of the air inlet cylinder 22.

[0038] The side of the air inlet cylinder 22 facing the outlet is flared, and a waterproof, breathable membrane 24 is provided at the outlet of the air inlet cylinder 22. This membrane 24 is conventional and allows air to pass but blocks water, preventing water from the kettle 1 from entering the air inlet cylinder 22. The flared structure of the air inlet cylinder 22 increases the size of the outlet end of the air inlet cylinder 22, allowing the membrane 24 to be larger, providing a larger ventilation area and reducing intake resistance.

[0039] The outlet of the air inlet cylinder 22 is tilted upward, specifically tilted toward the lower end of the air outlet pipe 14. The vertical pipe 2 and the air outlet pipe 14 are located on both sides of the radial direction of the kettle body 1 and are separated from each other. A valve is also provided on the air outlet pipe 14, through which the opening of the air outlet pipe 14 can be adjusted, and the valve can be closed when the reaction is in progress.

[0040] The waterproof breathable membrane 24 completely closes the outlet of the air intake cylinder 22. The outlet of the air intake cylinder 22 is fixed with a pressing frame 25 by bolts. The pressing frame 25 presses the waterproof breathable membrane 24 against the air intake cylinder 22 and seals the outer edge of the waterproof breathable membrane 24 with the outer edge of the air intake cylinder 22.

[0041] Reference Figure 2 The gas outlet pipe 14 is connected to a gas detector 5, which detects the oxygen content discharged from the kettle body 1. The gas detector 5 is a prior art.

[0042] The operating principle of a gas-shielded reactor according to an embodiment of the present application is as follows: the main material to be reacted is fed through the feed pipe 11, the liquid in the reactor body 1 reaches a liquid level, and after the feeding is completed, the valve of the feed pipe 11 is closed. The air source of the control cylinder 3 is disconnected, so that the air inlet and outlet of the cylinder 3 are connected to the external normal pressure. The piston rod of the cylinder 3 and the vertical pipe 2 fall downward under the action of their own gravity. When the float 23 contacts the liquid in the reactor body 1, the float 23 floats on the liquid surface, and the air outlet of the air inlet cylinder 22 is located near the liquid surface.

[0043] Then, protective gas is input into the vertical pipe 2 through the air inlet pipe 13. The protective gas is preferably nitrogen. The protective gas reaches the internal space of the kettle body 1 after passing through the air inlet cylinder 22 and the waterproof breathable membrane 24. As the gas diffuses, the original air in the kettle body 1 is gradually squeezed to the other corner of the kettle body 1, thereby squeezing the original air out of the air outlet pipe 14; the air outlet pipe 14 can be connected to an exhaust pump to improve the exhaust efficiency.

[0044] Since the air inlet tube 22 is located at a corner position close to the liquid surface in the kettle body 1, and the air outlet pipe 14 is located at another corner position on the top of the kettle body 1, the diffusion path of the gas is optimized during the filling process of the protective gas, so that the original air can be discharged more efficiently, and the leakage of the protective gas from the air outlet pipe 14 before the air is exhausted is reduced, thereby improving the filling efficiency of the protective gas and not easily causing waste of the protective gas.

[0045] During the shielding gas supply process, the gas detector 5 monitors the results. When oxygen is depleted, the valve on the feed pipe 11 is opened to add the secondary material. Once the secondary material is added, the feed pipe 11 is closed and the shielding gas continues to flow for a specified period. The valve on the outlet pipe 14 is then closed, halting the shielding gas supply. The cylinder 3 is then extended to raise the air inlet cylinder 22 and the float 23 away from the liquid surface to prevent them from being affected by the stirring blades 42 and the agitated material. The motor 4 is then activated to rotate the stirring blades 42, ensuring a full reaction of the material within the kettle 1.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A gas-shielded reactor, comprising a reactor body (1), a feed pipe (11) being provided at the top of the reactor body (1), and a discharge pipe (12) being provided at the bottom of the reactor body (1), characterized in that: The top of the kettle body (1) is connected to a vertically sliding vertical pipe (2), the top of the vertical pipe (2) is connected to an air inlet pipe (13), the bottom of the vertical pipe (2) is connected to an air inlet cylinder (22), a floating block (23) is fixed to the bottom of the air inlet cylinder (22), and an air outlet pipe (14) is also provided at the top of the kettle body (1), and the vertical pipe (2) and the air outlet pipe (14) are respectively located on both sides of the radial direction of the kettle body (1) and are away from each other.

2. A gas-protected reactor according to claim 1, characterized in that: The side of the air inlet cylinder (22) facing the air outlet direction is in a flared shape, and the outlet of the air inlet cylinder (22) is arranged to be inclined upward.

3. A gas-protected reactor according to claim 2, characterized in that: The outlet of the air inlet cylinder (22) is provided with a waterproof breathable membrane (24), and the waterproof breathable membrane (24) completely closes the outlet of the air inlet cylinder (22). The outlet of the air inlet cylinder (22) is fixed with a pressing frame (25) by bolts, and the pressing frame (25) presses the waterproof breathable membrane (24) against the air inlet cylinder (22).

4. A gas-protected reactor according to claim 1, characterized in that: A cylinder (3) is fixed to the outer wall of the kettle body (1), and an output end of the cylinder (3) is arranged upward and fixed with a connecting block (31), and the connecting block (31) is fixed to the upper end of the vertical pipe (2).

5. The gas-protected reactor according to claim 1, characterized in that: The contact position between the kettle body (1) and the vertical pipe (2) is sealed by providing a sealing ring (21).

6. A gas-protected reactor according to claim 1, characterized in that: The feed pipe (11), the discharge pipe (12) and the air outlet pipe (14) are all provided with valves.

7. The gas-protected reactor according to claim 1, characterized in that: The gas outlet pipe (14) is connected to a gas detector (5).

8. The gas-protected reactor according to claim 1, characterized in that: The kettle body (1) is provided with a motor (4) and a stirring shaft (41) driven to rotate by the motor (4); a plurality of stirring blades (42) are fixed to the end of the stirring shaft (41) located inside the kettle body (1).

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