High-density variable-temperature reaction kettle for preparing polymerization inhibitor

Abstract

The invention discloses a high-density variable-temperature reaction kettle for preparing a polymerization inhibitor, which is applied to the technical field of polymerization inhibitor preparation, and comprises an outer kettle tank, and the inner part of the outer kettle tank is rotatably connected with an inner kettle tank. And the polymerization inhibitor can be shaken up in the rotating process of the inner kettle tank. And meanwhile, the internal stirring shaft can also be driven to rotate to fully stir the polymerization inhibitor. Therefore, the heat transfer efficiency during mixing of the polymerization inhibitor is improved, full contact and reaction of polymerization inhibitor reactants are promoted, and the product quality after the polymerization inhibitor preparation reaction is ensured. The connecting cavity groove is formed between the outer kettle tank and the inner kettle tank, materials are injected into the communicating hole rotating at a high speed through the connecting cavity groove, and the feeding port and the discharging port are sealed through the sealing mechanism. A reactant can be injected into the inner kettle tank in the high-speed rotating process, and meanwhile, the sealing performance of the reaction kettle in the high-speed rotating process when materials are not injected is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of polymerization inhibitor preparation, and particularly relates to a high-density variable temperature reaction kettle used for polymerization inhibitor preparation. Background Art

[0002] ‌Inhibitors are industrial additives that are usually used to prevent the polymerization process. Inhibitor molecules react with chain radicals to form non-radical substances or low-activity radicals that cannot initiate, thereby terminating the polymerization.

[0003] At present, a Chinese invention with publication number: CN109261096B discloses a reactor that is easy to seal. In the production and processing of existing polymerization inhibitors, it is necessary to mix the polymerization inhibitor raw materials and other additives, so a reactor is needed. However, during use, the reactor can only simply stir the polymerization inhibitor. Since the polymerization inhibitor needs to be heated during the reaction process to increase the reaction rate of the polymerization inhibitor reaction, it is difficult to evenly transfer heat inside the polymerization inhibitor with simple stirring. In the process, problems such as poor heat dissipation or violent local reactions are likely to occur. Therefore, the continuity and effectiveness of the polymerization inhibitor reaction cannot be maintained, and the full contact and reaction of the reactants cannot be effectively promoted, thereby reducing the polymerization inhibitor reaction efficiency and the quality of the product. Summary of the invention

[0004] The purpose of the present invention is to provide a high-density variable temperature reactor for the preparation of polymerization inhibitors, which has the advantage of allowing the reactor to rotate at high speed to mix the polymerization inhibitor during the stirring process, promoting sufficient contact and reaction of the polymerization inhibitor reactants and ensuring that the reactor is filled with reactants during high-speed rotation while ensuring the sealing when no filling is performed.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a high-density variable temperature reactor for the preparation of inhibitors, comprising an outer reactor tank, the interior of the outer reactor tank is rotatably connected to an inner reactor tank, a fixed column rotatably connected to the outer reactor tank is welded to the top of the inner reactor tank, a feed port connected to the interior of the inner reactor tank is opened at the bottom of the inner cavity of the fixed column, a discharge port welded to the outer reactor tank is rotatably connected to the bottom of the inner cavity of the inner reactor tank, a support frame is bolted to the top of the outer reactor tank, and a mixing mechanism and a sealing mechanism used in conjunction with the inner reactor tank are respectively installed inside the outer reactor tank.

[0006] By adopting the above technical scheme, the inner kettle is driven to rotate at high speed inside the feed pipe by opening the mixing mechanism, so that the inner kettle can shake the inhibitor during the rotation. At the same time, the internal stirring shaft can also be driven to rotate to fully stir the inhibitor. Thereby improving the heat transfer efficiency during the mixing of the inhibitor, promoting the full contact and reaction of the inhibitor reactants, and ensuring the product quality after the preparation reaction of the inhibitor. By setting a connecting cavity between the outer kettle and the inner kettle, the connecting cavity is used to add materials to the high-speed rotating connecting hole, and the feed port and the discharge port are sealed by the sealing mechanism. Not only can the reactant be added to the interior during the high-speed rotation of the inner kettle, but also the sealing of the reactor is guaranteed when no material is added and during the high-speed rotation, which is convenient for the preparation and processing of the inhibitor and improves practicality.

[0007] The present invention is further configured as follows: the mixing mechanism includes a first motor bolted to one side of the top of the outer kettle tank, the output end of the first motor is bolted to a first bevel gear rotatably connected to the outer kettle tank, the top of the fixed column is fixedly sleeved with a second bevel gear meshing with the first bevel gear, the top of the inner cavity of the outer kettle tank is welded with a fixed cylinder rod rotatably connected to the inner kettle tank and the fixed column, the surface of the fixed cylinder rod is rotatably sleeved with a rotating cylinder sleeve, the top of the rotating cylinder sleeve is welded with a connecting rod bolted to the inside of the inner kettle tank, the four sides of the rotating cylinder sleeve are symmetrically rotatably connected to stirring shafts, one end of the four stirring shafts close to each other is bolted with a fourth bevel gear rotatably connected to the rotating cylinder sleeve, and the surface of the fixed cylinder rod is fixedly sleeved with a third bevel gear bolted to the fourth bevel gear.

[0008] The above technical solution is adopted to improve the heat transfer efficiency, promote the full contact and reaction of the inhibitor reactants, and ensure the quality of the inhibitor product.

[0009] The present invention is further configured as follows: the sealing mechanism includes a second motor bolted to the top of the support frame, the output end of the second motor is bolted to an output shaft rotatably connected to the support frame, the output shaft passes through the interior of the fixed barrel rod and is rotatably connected to the fixed barrel rod, the surface of the output shaft is provided with threaded grooves at both ends close to the feed port and the discharge port, the surface of the output shaft is sleeved with a threaded sleeve threadedly connected to the threaded groove, both ends of the top and bottom of the surface of the fixed barrel rod are slidably sleeved with conical sealing plugs respectively plugged into the feed port and the discharge port, both ends of the surface of the threaded sleeve are welded with connecting blocks slidably connected to the interior of the fixed barrel rod, and the end of the connecting block away from the threaded sleeve is welded to the inside of the conical sealing plug.

[0010] By adopting the above technical solution, not only can the reactants be added to the interior of the inner kettle during the high-speed rotation process, but the sealing of the reactor during the high-speed rotation process is also ensured.

[0011] The present invention is further configured as follows: a feed pipe is welded on one side of the top of the outer kettle tank, connecting holes connected to the inside of the feed port are opened on both sides of the surface of the fixed column, and a connecting cavity groove is opened at one end of the inner part of the outer kettle tank close to the fixed column for use with the feed pipe and the connecting hole respectively.

[0012] By adopting the above technical solution, the inner kettle drives the connecting hole to rotate during high-speed rotation. At this time, since the connecting cavity is always connected to the connecting hole, after adding the reactant into the feed pipe, the reactant can pass through the connecting cavity to the inside of the connecting hole, thereby being filled into the inner kettle.

[0013] The present invention is further configured as follows: both sides of the top and bottom of the fixed column surface are welded with limit plates slidably connected to the outer kettle tank, and the surface of the limit plate is fixedly sleeved with a sealing ring used in conjunction with the connecting cavity groove.

[0014] By adopting the above technical solution, the sealing between the outer kettle and the fixed column is improved, and the rotation of the inner kettle is supported and limited, thereby preventing the inhibitor raw material and the reactant from leaking out of the gap between the connecting cavity grooves.

[0015] The present invention is further configured as follows: a water inlet valve is fixedly connected to one side of the top of the outer kettle tank, a drain valve is fixedly connected to one side of the bottom of the outer kettle tank, and a connecting rod used in conjunction with the outer kettle tank is welded on the surface of the inner kettle tank.

[0016] By adopting the above technical solution, water can be added to the gap between the outer kettle and the inner kettle by opening the water inlet valve, so that the inhibitor reaction inside the inner kettle can be heated and cooled, and the water can be discharged through the drain valve.

[0017] The present invention is further configured as follows: the inner wall of the outer kettle tank is respectively bolted with an electric heating network and a temperature conduction plate used in conjunction with the inner kettle tank, a wire electrically connected to the electric heating network is slidably penetrated on one side of the surface of the outer kettle tank, and a controller is bolted on the other side of the surface of the outer kettle tank.

[0018] By adopting the above technical solution, the controller is turned on to connect the electric heating network to the power supply via wires, thereby heating and raising the temperature, so that the heat conduction plate can transfer heat to the inside of the water source between the outer kettle tank and the inner kettle tank, thereby heating and changing the temperature of the water source, so that the temperature of the water source can be adjusted, thereby improving the reaction efficiency of the inhibitor.

[0019] The present invention is further configured as follows: a discharge valve fixedly connected to the inside of the discharge port is bolted to the bottom of the outer kettle.

[0020] By adopting the above technical solution, it is convenient to discharge the polymerization inhibitor after the reaction is completed from the inside of the inner kettle tank through the discharge valve.

[0021] The present invention is further configured as follows: a mounting lug is welded on the top of the surface of the outer kettle tank.

[0022] By adopting the above technical solution, it is convenient to fix the rope by using the installation lug, thereby facilitating the lifting and installation of the external kettle.

[0023] The present invention is further configured such that stirring blades are welded on both sides of the stirring shaft surface.

[0024] By adopting the above technical solution, the stirring effect of the inhibitor after the stirring shaft rotates is improved.

[0025] In summary, the present invention has the following beneficial effects: 1. By turning on the mixing mechanism, the inner kettle is driven to rotate at high speed inside the feed pipe, so that the inner kettle can shake the polymerization inhibitor evenly during the rotation process. At the same time, the internal stirring shaft can also be driven to rotate to fully stir the polymerization inhibitor. This improves the heat transfer efficiency during the mixing of the polymerization inhibitor, promotes the full contact and reaction of the polymerization inhibitor reactants, and ensures the product quality after the polymerization inhibitor preparation reaction; 2. A connecting cavity is provided between the outer kettle and the inner kettle, and materials are added to the high-speed rotating connecting hole through the connecting cavity, and the feed port and the discharge port are sealed through a sealing mechanism. Not only can the reactant be added to the inner kettle during high-speed rotation, but the sealing of the reactor is also ensured when no material is added and the reactor is rotating at high speed, which is convenient for the preparation and processing of the inhibitor and improves practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional view of the structure of the present invention; Figure 3 It is a schematic diagram of the local structure of the present invention; Figure 4 It is a partial structural cross-sectional view of the present invention; Figure 5 The present invention Figure 2 A magnified view of point A in the figure; Figure 6 The present invention Figure 2 Enlarged view of point B in .

[0027] Figure numerals: 1, outer kettle; 2, inner kettle; 3, feed pipe; 4, feed port; 5, connecting cavity; 6, connecting hole; 7, mixing mechanism; 701, first motor; 702, first bevel gear; 703, second bevel gear; 704, connecting rod; 705, rotating sleeve; 706, stirring shaft; 707, fixed barrel rod; 708, third bevel gear; 709, fourth bevel gear; 8, sealing mechanism; 801, second Motor; 802, output shaft; 803, threaded groove; 804, connecting block; 805, threaded sleeve; 806, conical sealing plug; 9, sealing ring; 10, support frame; 11, fixing column; 12, discharge port; 13, discharge valve; 14, water inlet valve; 15, drain valve; 16, electric heating network; 17, temperature conduction plate; 18, connecting rod; 19, wire; 20, controller; 21, mounting ear; 22, stirring blade; 23, limit plate. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0029] Embodiment 1: refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A high-density variable temperature reactor for the preparation of polymerization inhibitors, comprising an outer kettle 1, wherein the inner kettle 2 is rotatably connected inside the outer kettle 1, a fixed column 11 rotatably connected to the outer kettle 1 is welded on the top of the inner kettle 2, a feed port 4 communicating with the inner kettle 2 is provided at the bottom of the inner cavity of the fixed column 11, a discharge port 12 welded to the outer kettle 1 is rotatably connected at the bottom of the inner cavity of the inner kettle 2, a support frame 10 is bolted to the top of the outer kettle 1, and a mixing mechanism 7 and a sealing mechanism 8 used in conjunction with the inner kettle 2 are respectively installed inside the outer kettle 1. By opening the mixing mechanism 7, the inner kettle 2 is driven to rotate at a high speed inside the feed pipe 3, so that the inner kettle 2 can shake the polymerization inhibitor during the rotation process. At the same time, the internal stirring shaft 706 can also be driven to rotate by itself to fully stir the polymerization inhibitor. Thereby, the heat transfer efficiency during the mixing of the polymerization inhibitor is improved, the full contact and reaction of the polymerization inhibitor reactants are promoted, and the product quality after the polymerization inhibitor preparation reaction is ensured.

[0030] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6The mixing mechanism 7 includes a first motor 701 bolted to one side of the top of the outer kettle tank 1, the output end of the first motor 701 is bolted to a first bevel gear 702 rotatably connected to the outer kettle tank 1, the top of the fixed column 11 is fixedly sleeved with a second bevel gear 703 meshing with the first bevel gear 702, the top of the inner cavity of the outer kettle tank 1 is welded with a fixed cylinder rod 707 rotatably connected to the inner kettle tank 2 and the fixed column 11, the surface of the fixed cylinder rod 707 is rotatably sleeved with a rotating cylinder sleeve 705, the top of the rotating cylinder sleeve 705 is welded with a connecting rod 704 bolted to the inside of the inner kettle tank 2, the four sides of the rotating cylinder sleeve 705 are symmetrically rotatably connected with stirring shafts 706, the ends of the four stirring shafts 706 close to each other are bolted with a fourth bevel gear 709 rotatably connected to the rotating cylinder sleeve 705, and the surface of the fixed cylinder rod 707 is fixedly sleeved with a third bevel gear 708 bolted to the fourth bevel gear 709. Improve heat transfer efficiency, promote full contact and reaction of inhibitor reactants, and ensure the quality of inhibitor products.

[0031] refer to Figure 2 , Figure 5 A feed pipe 3 is welded on one side of the top of the outer kettle 1, and both sides of the surface of the fixed column 11 are provided with a connecting hole 6 connected to the inside of the feed port 4. A connecting cavity 5 is provided at one end of the outer kettle 1 near the fixed column 11 for use with the feed pipe 3 and the connecting hole 6. The connecting cavity 5 is always connected to the connecting hole 6 because the connecting cavity 5 is always connected to the connecting hole 6 when the inner kettle 2 rotates at high speed. Therefore, after adding the reactant into the feed pipe 3, the reactant can pass through the connecting cavity 5 to the inside of the connecting hole 6, thereby being filled into the inner kettle 2.

[0032] refer to Figure 3 , Figure 5 The top and bottom sides of the fixed column 11 are welded with a limit plate 23 for sliding connection with the outer kettle 1, and the surface of the limit plate 23 is fixedly sleeved with a sealing ring 9 used in conjunction with the connecting cavity 5. The sealing between the outer kettle 1 and the fixed column 11 is improved, and the rotation of the inner kettle 2 is supported and limited, thereby preventing the inhibitor raw material and the reactant from leaking out of the gap of the connecting cavity 5.

[0033] refer to Figure 1 , Figure 2 , Figure 6 A water inlet valve 14 is fixedly connected to one side of the top of the outer kettle 1, a drain valve 15 is fixedly connected to one side of the bottom of the outer kettle 1, and a connecting rod 18 used in conjunction with the outer kettle 1 is welded on the surface of the inner kettle 2. By opening the water inlet valve 14, water can be added to the gap between the outer kettle 1 and the inner kettle 2, so that the polymerization inhibitor reaction inside the inner kettle 2 can be heated and cooled, and water can be discharged through the drain valve 15 at the same time.

[0034] Brief description of the use process: by turning on the first motor 701 to drive the first bevel gear 702 to rotate, the inner kettle 2 uses the second bevel gear 703 to mesh with the first bevel gear 702, so that the inner kettle 2 rotates inside the outer kettle 1 to mix and shake the polymerization inhibitor. Then, through the connecting rod 704, the inner kettle 2 synchronously drives the rotating sleeve 705 to rotate on the surface of the fixed sleeve rod 707 during the rotation process. Since the fixed sleeve rod 707 is welded to the inside of the outer kettle 1 and is fixed, the stirring shaft 706 on the surface of the rotating sleeve 705 is meshed with the fixed third bevel gear 708 through the fourth bevel gear 709, so that the stirring shaft 706 can rotate inside the inner kettle 2, so that the outer kettle 1 can not only rotate to shake the reaction of the polymerization inhibitor, but also stir the reaction of the polymerization inhibitor inside, which helps to accelerate the heat transfer process, promote the full contact and reaction of the polymerization inhibitor reactants, and improve the reaction efficiency. In addition, during the rotation of the inner kettle tank 2 inside the outer kettle tank 1, the connecting rod 18 can be used to shake the moisture between the inner kettle tank 2 and the outer kettle tank 1 to mix the water source, ensure the temperature balance of the water source after heating, and ensure the uniformity of heat transfer to the inhibitor.

[0035] Embodiment 2: refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A high-density variable temperature reactor for the preparation of polymerization inhibitors comprises an outer reactor tank 1, wherein the inner reactor tank 2 is rotatably connected to the inner reactor tank 2, a fixed column 11 rotatably connected to the outer reactor tank 1 is welded on the top of the inner reactor tank 2, a feed port 4 communicating with the inner reactor tank 2 is provided at the bottom of the inner cavity of the fixed column 11, a discharge port 12 welded to the outer reactor tank 1 is rotatably connected to the bottom of the inner cavity of the inner reactor tank 2, a support frame 10 is bolted to the top of the outer reactor tank 1, and a mixing mechanism 7 and a sealing mechanism 8 used in conjunction with the inner reactor tank 2 are respectively installed inside the outer reactor tank 1. By setting a connecting cavity 5 between the outer reactor tank 1 and the inner reactor tank 2, the connecting cavity 5 is used to fill the material into the high-speed rotating connecting hole 6, and the feed port and the discharge port are sealed by the sealing mechanism 8. Not only can the reactant be added to the inner reactor tank 2 during the high-speed rotation process, but also the sealing of the reactor is ensured when no material is added and during the high-speed rotation process, which is convenient for the preparation and processing of polymerization inhibitors and improves practicality.

[0036] refer to Figure 2 , Figure 4 , Figure 5 , Figure 6The sealing mechanism 8 comprises a second motor 801 bolted to the top of the support frame 10, an output shaft 802 rotatably connected to the support frame 10 is bolted to the output end of the second motor 801, the output shaft 802 penetrates the interior of the fixed cylinder rod 707 and is rotatably connected to the fixed cylinder rod 707, a thread groove 803 is provided on the surface of the output shaft 802 at both ends close to the feed port 4 and the discharge port 12, a thread sleeve 805 threadedly connected to the thread groove 803 is sleeved on the surface of the output shaft 802, a conical sealing plug 806 is slidably sleeved on both ends of the top and bottom of the surface of the fixed cylinder rod 707, and a connecting block 804 is welded on both ends of the surface of the thread sleeve 805 and is slidably connected to the interior of the fixed cylinder rod 707, and one end of the connecting block 804 away from the thread sleeve 805 is welded to the inside of the conical sealing plug 806. Not only can the reactant be added to the interior during the high-speed rotation of the inner kettle tank 2, but also the sealing of the reactor during the high-speed rotation is ensured.

[0037] refer to Figure 1 , Figure 2 The inner wall of the outer kettle 1 is respectively bolted with an electric heating network 16 and a temperature conducting plate 17 used in conjunction with the inner kettle 2. A wire 19 electrically connected to the electric heating network 16 is slidably connected through one side of the surface of the outer kettle 1. A controller 20 is bolted to the other side of the surface of the outer kettle 1. By turning on the controller 20, the electric heating network 16 is connected to the power supply through the wire 19, thereby heating and raising the temperature, so that the temperature conducting plate 17 can transfer heat to the water source between the outer kettle 1 and the inner kettle 2, thereby heating and changing the temperature of the water source, so that the temperature of the water source can be adjusted, and the reaction efficiency of the polymerization inhibitor is improved.

[0038] refer to Figure 2 , Figure 6 The bottom of the outer kettle 1 is bolted with a discharge valve 13 which is fixedly connected to the inside of the discharge port 12. It is convenient to discharge the polymerization inhibitor after the reaction is completed from the inside of the inner kettle 2 through the discharge valve 13.

[0039] refer to Figure 1 , Figure 2 The top of the outer kettle tank 1 surface is welded with a mounting lug 21. It is convenient to use the mounting lug 21 to fix the rope, so as to facilitate the lifting and installation of the outer kettle tank 1.

[0040] refer to Figure 2 , Figure 4 , stirring blades 22 are welded on both sides of the surface of the stirring shaft 706. The stirring effect of the stirring shaft 706 on the inhibitor after self-rotation is improved.

[0041] Brief description of the use process: By turning on the second motor 801 to drive the output shaft 802 to rotate inside the fixed cylinder rod 707, the output shaft 802 can use the thread groove 803 to engage with the threaded sleeve 805. As a result, the conical sealing plug 806 slides up and down on the surface of the fixed cylinder rod 707 under the limit of the connection block 804 by the fixed cylinder rod 707, so that the conical sealing plug 806 can respectively block the feed port 4 and the inside of the inner kettle 2. In this way, the sealing of the inhibitor in the mixing process inside the reactor is ensured. At the same time, it does not interfere with the mixing mechanism 7 driving the inner kettle 2 to rotate and mix and shake the inhibitor. In addition, the additive can be added through the feed pipe 3, and the additive can be connected to the cavity 5. The internal connecting hole 6 rotates at a high speed, and the feed port 4 is opened by the sealing mechanism 8 to enter the inside of the inner kettle 2, so that the reactant can still be added during the high-speed rotation and mixing of the inner kettle 2.

[0042] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A high-density variable temperature reactor for preparing polymerization inhibitors, comprising an outer reactor tank (1), characterized in that: The inner part of the outer kettle (1) is rotatably connected to the inner kettle (2), the top of the inner kettle (2) is welded with a fixing column (11) rotatably connected to the outer kettle (1), the bottom of the inner cavity of the fixing column (11) is provided with a feed port (4) connected to the inner part of the inner kettle (2), the bottom of the inner cavity of the inner kettle (2) is rotatably connected to a discharge port (12) welded to the outer kettle (1), the top of the outer kettle (1) is bolted with a support frame (10), and the inner part of the outer kettle (1) is respectively installed with a mixing mechanism (7) and a sealing mechanism (8) used in conjunction with the inner kettle (2).

2. A high-density variable temperature reactor for preparing polymerization inhibitor according to claim 1, characterized in that: The mixing mechanism (7) comprises a first motor (701) bolted to one side of the top of the outer kettle (1); the output end of the first motor (701) is bolted to a first bevel gear (702) rotatably connected to the outer kettle (1); the top of the fixed column (11) is fixedly sleeved with a second bevel gear (703) meshing with the first bevel gear (702); the top of the inner cavity of the outer kettle (1) is welded with a fixed cylindrical rod (707) penetrating and rotatably connected to the inner kettle (2) and the fixed column (11); the fixed cylindrical rod (707) is A rotating sleeve (705) is rotatably sleeved on the surface, a connecting rod (704) is welded to the top of the rotating sleeve (705) and bolted to the inside of the inner kettle (2), the four sides of the rotating sleeve (705) are symmetrically rotatably connected to stirring shafts (706), one end of the four stirring shafts (706) close to each other is bolted to a fourth bevel gear (709) rotatably connected to the rotating sleeve (705), and a third bevel gear (708) bolted to the fourth bevel gear (709) is fixedly sleeved on the surface of the fixed sleeve rod (707).

3. A high-density variable temperature reactor for preparing polymerization inhibitor according to claim 2, characterized in that: The sealing mechanism (8) comprises a second motor (801) bolted to the top of the support frame (10); an output shaft (802) rotatably connected to the support frame (10) is bolted to the output end of the second motor (801); the output shaft (802) passes through the interior of the fixed cylindrical rod (707) and is rotatably connected to the fixed cylindrical rod (707); a threaded groove (803) is formed on the surface of the output shaft (802) at both ends close to the feed port (4) and the discharge port (12); and the surface of the output shaft (802) is The face sleeve is provided with a threaded sleeve (805) threadedly connected to the thread groove (803); both ends of the top and bottom of the surface of the fixed rod (707) are slidably sleeved with conical sealing plugs (806) respectively plugged into the feed port (4) and the discharge port (12); both ends of the surface of the threaded sleeve (805) are welded with connecting blocks (804) that penetrate and slide through the interior of the fixed rod (707); and one end of the connecting block (804) away from the threaded sleeve (805) is welded to the inside of the conical sealing plug (806).

4. The high-density variable temperature reactor for preparing polymerization inhibitor according to claim 1, characterized in that: A feed pipe (3) is welded to one side of the top of the outer kettle (1), and connecting holes (6) communicating with the inside of the feed port (4) are provided on both sides of the surface of the fixed column (11). A connecting cavity (5) is provided at one end of the inner part of the outer kettle (1) close to the fixed column (11) and used in conjunction with the feed pipe (3) and the connecting hole (6).

5. A high-density variable temperature reactor for preparing polymerization inhibitor according to claim 4, characterized in that: Limiting plates (23) slidably connected to the outer kettle (1) are welded to both sides of the top and bottom of the surface of the fixed column (11), and a sealing ring (9) used in conjunction with the connecting cavity (5) is fixedly sleeved on the surface of the limiting plate (23).

6. The high-density variable temperature reactor for preparing polymerization inhibitor according to claim 1, characterized in that: One side of the top of the outer kettle (1) is fixedly connected to a water inlet valve (14), one side of the bottom of the outer kettle (1) is fixedly connected to a water discharge valve (15), and a connecting rod (18) for use with the outer kettle (1) is welded to the surface of the inner kettle (2).

7. The high-density variable temperature reactor for preparing polymerization inhibitor according to claim 1, characterized in that: The inner wall of the outer kettle (1) is bolted with an electric heating network (16) and a heat conducting plate (17) for use with the inner kettle (2), and a wire (19) electrically connected to the electric heating network (16) is slidably connected through one side of the surface of the outer kettle (1), and a controller (20) is bolted to the other side of the surface of the outer kettle (1).

8. The high-density variable temperature reactor for preparing polymerization inhibitor according to claim 1, characterized in that: A discharge valve (13) which is fixedly connected to the inside of the discharge port (12) is bolted to the bottom of the outer kettle (1).

9. The high-density variable temperature reactor for preparing polymerization inhibitor according to claim 1, characterized in that: A mounting lug (21) is welded to the top of the surface of the outer kettle tank (1).

10. The high-density variable temperature reactor for preparing polymerization inhibitor according to claim 2, characterized in that: Stirring blades (22) are welded on both sides of the surface of the stirring shaft (706).

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