A cleaning mechanism for phosgene reactor

Abstract

The invention application relates to the technical field of sealing and cleaning of phosgene reactors. The invention application discloses a cleaning mechanism for a phosgene reactor, which utilizes an isolating body, a spherical body and a cleaning assembly on a cleaning opening to form a sealing and cleaning structure of the reactor. The position of the cleaning head in the inner cavity of the reactor body is adjusted by manually pulling and toggling a long tube, thereby achieving a cleaning effect on different positions of the reactor body. The entire structure can clean the phosgene reactor under a sealed condition, effectively avoiding the volatilization and leakage of toxic substances, and the cleaning method is more flexible, the operation is more convenient, the cleaning effect is good, and the energy consumption is low.

Description

Technical Field

[0001] The invention relates to the technical field of sealing and cleaning of a phosgene reactor, in particular to a cleaning mechanism for a phosgene reactor. Background Art

[0002] Phosgene reactor is also called photochemical reactor, photochemical reactor, multifunctional photochemical reactor, photocatalytic reaction device, etc. Phosgene reactor is an important facility for realizing phosgene reaction. Phosgene, also known as carbonyl chloride, is highly toxic, slightly soluble in water, and relatively soluble in benzene, toluene, etc. It is made from a mixture of carbon monoxide and chlorine through activated carbon. Phosgene is a colorless gas at room temperature with a rotten grass smell. Its chemical properties are unstable and it hydrolyzes rapidly in water to generate hydrogen chloride. Phosgene is one of the high-temperature pyrolysis products of chlorine plastics. Phosgene is generally used as an intermediate for organic synthesis, pesticides, drugs, dyes and other chemical products.

[0003] The production process of phosgene products is usually completed in a reactor. The phosgene reactor is mainly used for the production of gas phase, liquid phase, solid phase, flow system and other products. The phosgene reactor can promote the occurrence of photochemical reactions under the irradiation of ultraviolet light, visible light or other special light to meet the needs of product production.

[0004] The prior art discloses a patent for a phosgene reactor and a temperature measuring sleeve, and its publication number is: CN219434235U; the patent ensures that the temperature measuring sleeve directly measures the temperature of the filler without destroying the original structure of the phosgene reactor. The entire structure is developed around the temperature detection of the filler inside the phosgene reactor, and does not consider the cleaning problem inside the phosgene reactor. The prior art also discloses a patent for a sealing device for a phosgene reaction stirring device, and its publication number is: CN204878731U; the patent sets a static ring and a dynamic ring on the stirring shaft, the static ring is fixedly installed on the kettle cover of the reactor, the dynamic ring is sleeved outside the stirring shaft and moves with the stirring shaft, and the lower end face of the dynamic ring is against the upper end face of the static ring, a V-shaped groove is provided on the dynamic ring, a sealing ring is installed in the V-shaped groove, a cone is also provided on the dynamic ring, and a cone hole matching the cone is provided on the fixed seat, thereby realizing the sealing function of the stirring structure and avoiding the problem of leakage of the stirring device of the phosgene reaction during operation. Likewise, the above patents do not consider the sealing and cleaning problem of the phosgene reactor.

[0005] In order to ensure the effective use of the phosgene reactor and avoid the impact of residues on subsequent chemical production, the staff needs to clean the phosgene reactor regularly. However, the phosgene reaction will produce corresponding toxic substances during the implementation process. This toxic substance has a certain volatility. If the phosgene reactor is cleaned directly, it is very easy to cause the volatilization and diffusion of toxic substances, which will affect the health of the staff. There are two ways to clean the existing phosgene reactor. One is that the staff wears specific protective clothing and then uses corresponding cleaning equipment to clean the phosgene reactor. This method cannot achieve the sealing effect, and it is impossible to eliminate the volatilization problem of toxic substances; the other is to introduce the cleaning liquid into the phosgene reactor, and then use the stirring component of the phosgene reactor to stir the cleaning liquid, so as to achieve the cleaning effect. This method can better solve the sealing problem, but the cleaning effect is not ideal. The chemical substances attached to the inner surface or corner of the phosgene reactor cannot be cleaned in a targeted manner, and the energy consumption of cleaning is high. Therefore, in the cleaning process of the phosgene reactor, technicians in this field need a cleaning mechanism that can fully consider the cleaning effect and cleaning sealing of the phosgene reactor. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems and to design a cleaning mechanism for a phosgene reactor.

[0007] To achieve the above-mentioned purpose, the technical solution of the present invention is a cleaning mechanism for a phosgene reactor, comprising an isolating body, the isolating body is used to block the cleaning opening of the reactor body, a reserved hole is provided at the center of the isolating body, the reserved hole connects the upper surface and the lower surface of the isolating body, the inner cavity shape of the reserved hole is spherical, a spherical body is installed in the reserved hole, the spherical body can roll in the reserved hole, a socket is provided on the spherical body, the socket connects the upper end face and the lower end face of the spherical body, a cleaning component is inserted into the socket, the upper end of the cleaning component is located above the isolating body, and the lower end of the cleaning component is located above the isolating body. The end extends into the inner cavity of the reactor body, the cleaning component can be lifted and slid on the socket, a plurality of inner cavities are provided in the isolation body, the plurality of inner cavities are arranged around the reserved hole, the inner cavity is connected with the side of the isolation body, a locking component is provided in the inner cavity, the locking component can be linked with the cleaning component, the locking component locks and unlocks the connection relationship between the isolation body and the cleaning opening during the lifting and lowering of the cleaning component, the locking component retracts into the inner cavity when the cleaning component rises, and the locking component protrudes from the side surface of the isolation body when the cleaning component descends.

[0008] The cleaning assembly includes a permanent magnet 1, a long tube, a rubber handle, a cleaning head and a solenoid valve. The long tube passes through the socket and can be lifted and slid on the socket. The solenoid valve is installed at the upper port of the long tube. The solenoid valve is connected to a high-pressure pump through a hose. The rubber handle is a sleeve-shaped structure. The rubber handle is sleeved on the long tube. A pressure switch is provided on the rubber handle. The pressure switch is connected to the control end of the solenoid valve through a wire. The permanent magnet 1 and the cleaning head are both installed at the lower end of the long tube. The cleaning head is connected to the lower end of the long tube. The permanent magnet 1 is located above the cleaning head. A plurality of nozzles are provided on the cleaning head. The nozzles are distributed on the outer surface of the cleaning head. The shape of the permanent magnet 1 matches the shape of the lower surface of the isolator.

[0009] The upper port of the cleaning head is detachably connected to the lower port of the long tube, the permanent magnet is sleeved on the long tube, and a counterweight is installed on the lower end surface of the cleaning head.

[0010] A one-way valve is arranged in the long tube, and the conducting direction of the one-way valve is from the upper end of the long tube to the lower end of the long tube.

[0011] The upper surface and the lower surface of the isolation body are both spherical surfaces, the shape and size of the reserved hole match the shape and size of the spherical body and ensure that the outer surface of the spherical body can cooperate with the inner surface of the reserved hole, the locking assembly includes a rotating claw, and the rotating claw can rotate forward under the drive of a spring, the upper end of the rotating claw rotates toward the side surface of the isolation body and protrudes from the side surface of the isolation body, and the lower end of the rotating claw is installed with permanent magnet 2, the position of permanent magnet 2 corresponds to the position of permanent magnet 1, when permanent magnet 1 is close to the lower surface of the isolation body, permanent magnet 1 can attract permanent magnet 2 to descend, and permanent magnet 2 drives the rotating claw to rotate in the opposite direction during the descent, and the upper end of the rotating claw retracts into the inner cavity.

[0012] A plurality of sealing strips are arranged on the outer surface of the spherical body, and the sealing strips are embedded in the outer surface of the spherical body. The sealing strips can seal the gap between the outer surface of the spherical body and the inner surface of the reserved hole. When the upper end of the rotating hook protrudes from the side surface of the isolation body, it can buckle the inner side surface of the cleaning opening to form a locking structure.

[0013] The inner surface of the reserved hole is provided with an elastic material layer, and the elastic material layer can form a sealing match with the sealing strip on the spherical body, and the sealing strip on the spherical body can be disassembled and replaced.

[0014] The inner surface of the jack is provided with a plurality of rubber sealing rings, which are arranged along the length direction of the jack. The plurality of rubber sealing rings can seal the gap between the inner surface of the jack and the outer surface of the long tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present application can fully and multi-angle clean the phosgene reactor under sealed conditions, and at the same time use the locking assembly to lock the connection between the isolation body and the cleaning opening, thereby improving the sealing effect of the isolation body, effectively avoiding the separation of the isolation body and the cleaning opening due to the lifting and swinging of the long tube during the cleaning process, ensuring that the harmful substances remaining in the phosgene reactor will not volatilize or leak during the cleaning process, avoiding damage to the health of the staff, and improving the safety and environmental protection of chemical production;

[0017] 2. The present application can flexibly adjust the position of the cleaning head, effectively improve the cleaning effect, avoid the problems of poor cleaning effect, incomplete cleaning and high energy consumption in traditional stirring cleaning, and can better meet the needs of chemical production;

[0018] 3. The structural design of the present application is simple, and can be directly improved on the basis of the structure of the existing phosgene reactor, with low modification cost and wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a cleaning mechanism for a phosgene reactor according to the present invention in a non-tilted state;

[0020] Figure 2 It is a structural schematic diagram of a cleaning mechanism for a phosgene reactor according to the present invention in a tilted state;

[0021] Figure 3 It is a schematic diagram of the exploded structure of a cleaning mechanism for a phosgene reactor according to the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of a one-way valve installed in a long tube according to the present invention;

[0023] Figure 5 It is a schematic structural diagram of the locking assembly of the present invention when the permanent magnet approaches the lower surface of the isolating body;

[0024] Figure 6 It is a schematic structural diagram of the locking assembly of the present invention when the permanent magnet is away from the lower surface of the isolating body;

[0025] Figure 7This is an overall application diagram of a cleaning mechanism for a phosgene reactor according to the present invention;

[0026] In the figure, 1, inner cavity; 2, permanent magnet 1; 3, isolating body; 4, reserved hole; 5, spherical body; 6, socket; 7, long tube; 8, rubber handle; 9, cleaning head; 10, solenoid valve; 11, rotating hook; 12, permanent magnet 2; 13, camera; 14, cleaning opening; 15, feed port; 16, air inlet; 17, installation port; 18, stirring assembly. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings;

[0028] Example 1: A cleaning mechanism for a phosgene reactor, such as Figure 1-Figure 7As shown, it is applied to the cleaning opening 14 of the reactor body and is equipped with a camera 13. The shape of the cleaning opening 14 is funnel-shaped. The reactor body in this application generally refers to a large phosgene reactor. The staff needs to use a ladder to reach the height of the cleaning opening 14. The lower port of the cleaning opening 14 is connected to the inner cavity of the reactor body. The camera 13 is installed in the reactor body. The camera 13 is detachably connected to the inner surface of the reactor body. The camera 13 is connected to the smart terminal. The camera 13 can collect images of the inner cavity of the reactor body. The number of cameras 13 is at least one. The connection method of the camera 13 and the smart terminal is wireless connection or wired connection. When the camera 13 is connected When the smart terminal is connected by a video cable, one end of the video cable is connected to the camera 13, and the other end of the video cable extends to the outside of the reactor body and is connected to the smart terminal. The contact portion between the video cable and the reactor body is sealed with a sealing material. The camera 13 can collect images inside the reactor body and transmit them to the smart terminal. The smart terminal includes: a mobile phone, an IPAD, and a laptop computer. An isolator 3 is installed in the cleaning opening 14. The isolator 3 divides the inner cavity of the cleaning opening 14 into an upper part and a lower part. The lower part of the cleaning opening 14 is connected to the inner cavity of the reactor body. A reserved hole 4 is provided on the isolator 3. The reserved hole 4 connects the upper surface and the lower surface of the isolator 3. The upper end of the reserved hole 4 is connected to the isolator. The center position of the upper surface of the isolator 3 is connected, the lower port of the reserved hole 4 is connected with the center position of the lower surface of the isolator 3, the inner cavity shape of the reserved hole 4 is spherical, the spherical body 5 is installed in the reserved hole 4, the upper end surface of the spherical body 5 protrudes from the upper end of the reserved hole 4, and the lower end surface of the spherical body 5 protrudes from the lower end of the reserved hole 4. The spherical body 5 can roll in the reserved hole 4, and a socket 6 is provided on the spherical body 5. The socket 6 connects the upper end surface and the lower end surface of the spherical body 5. The upper end of the socket 6 is located within the range surrounded by the upper end of the reserved hole 4, and the lower end of the socket 6 is located within the area surrounded by the lower end of the reserved hole 4. A cleaning component is installed on the socket 6, and the upper end of the cleaning component is located above the isolator 3, and the lower end of the cleaning component extends into the reaction chamber. In the inner cavity of the kettle body, the cleaning component can be lifted and slid on the socket 6. When the cleaning component is moved, the spherical body 5 rolls in the reserved hole 4, thereby achieving the purpose of adjusting the position of the lower end of the cleaning component in the inner cavity of the reactor body; in addition, a plurality of inner cavities 1 are provided in the isolation body 3, and the plurality of inner cavities are arranged around the reserved hole 4. The inner cavity 1 is connected to the side of the isolation body 3. A locking component is provided in the inner cavity 1, and the locking component can be linked with the cleaning component. The locking component locks and unlocks the connection relationship between the isolation body 3 and the cleaning opening 14 during the lifting and lowering of the cleaning component. The locking component retracts into the inner cavity 1 when the cleaning component rises, and the locking component protrudes from the side surface of the isolation body 3 when the cleaning component descends.

[0029] It should be noted that the cleaning assembly includes a permanent magnet 2, a long tube 7, a rubber handle 8, a cleaning head 9 and a solenoid valve 10. Figure 3 As shown, the long tube 7 is a hard round tube, the size of the long tube 7 matches the size of the socket 6, the long tube 7 passes through the socket 6, the outer surface of the long tube 7 is matched with the inner surface of the socket 6, the lower end of the long tube 7 extends into the inner cavity of the reactor body, the upper end of the long tube 7 is located above the cleaning opening 14, the long tube 7 can be lifted and slid on the socket 6, the solenoid valve 10 is installed at the upper end of the long tube 7, the solenoid valve 10 is connected to the high-pressure pump through a hose, the solenoid valve 10 and the high-pressure pump are both connected to the mains, when the solenoid valve 10 is opened, the high-pressure pump can pump the cleaning liquid into the long tube 7, the rubber handle 8 is a sleeve-shaped structure, the rubber handle 8 is sleeved on the long tube 7, the inner surface of the rubber handle 8 is in contact with the outer surface of the long tube 7, the outer surface of the rubber handle 8 is provided with a concave and convex pattern for easy gripping, and the rubber A pressure switch is provided on the rubber handle 8, and the pressure switch is connected to the control end of the solenoid valve 10 through a wire. When the pressure switch is manually squeezed, the solenoid valve 10 opens, and when the pressure switch is released, the solenoid valve 10 closes. The length of the wire must be greater than the length of the long tube 7. The cleaning head 9 is installed at the lower end of the long tube 7. The cleaning head 9 is a hollow shell with an upper opening. The upper end opening of the cleaning head 9 is connected to the lower end of the long tube 7, and the inner cavity of the cleaning head 9 is connected to the inner cavity of the long tube 7. The cleaning head 9 is provided with a plurality of nozzles, and the plurality of nozzles are distributed on the outer surface of the cleaning head 9, and the plurality of nozzles are connected to the inner cavity of the cleaning head 9. A permanent magnet 2 is installed at the lower end of the long tube 7, and the permanent magnet 2 is located above the cleaning head 9. The shape of the permanent magnet 2 matches the shape of the lower surface of the isolator 3.

[0030] The upper port of the cleaning head 9 is detachably connected to the lower port of the long tube 7. The shape of the cleaning head 9 is spherical, cylindrical or disc-shaped. A counterweight is installed on the lower end surface of the cleaning head 9. A one-way valve is provided in the long tube 7. Figure 4 As shown, the conduction direction of the one-way valve is from the upper end of the long tube 7 to the lower end of the long tube 7. The one-way valve is close to the upper end of the long tube 7. When the solenoid valve 10 is turned on, the one-way valve is opened under the impact of the cleaning fluid. When the solenoid valve 10 is closed, the one-way valve is automatically closed and the inner cavity of the long tube 7 is isolated and sealed.

[0031] It should be noted that the upper surface and the lower surface of the isolator 3 are both spherical surfaces, and the shapes of the upper surface and the lower surface of the isolator 3 match the shape of the reserved hole 4. The shape and size of the reserved hole 4 match the shape and size of the spherical body 5 and ensure that the outer surface of the spherical body 5 and the inner surface of the reserved hole 4 can form a match. A plurality of sealing strips are arranged on the outer surface of the spherical body 5, and the sealing strips are embedded on the outer surface of the spherical body 5. When the spherical body 5 is in a stationary state or a rolling state, the sealing strips can seal the gap between the outer surface of the spherical body 5 and the inner surface of the reserved hole 4. The inner surface of the reserved hole 4 is provided with an elastic material layer, and the elastic material layer can form a sealing match with the sealing strip on the spherical body 5, and the sealing strip on the spherical body 5 can be removed and replaced.

[0032] It should be noted that the locking assembly includes a rotating hook 11, which can rotate in a positive direction under the drive of a spring, and the upper end of the rotating hook rotates toward the side surface of the isolating body 3 and protrudes from the side surface of the isolating body 3. Figure 6 As shown; a permanent magnet 2 12 is installed at the lower end of the rotating hook, and the position of the permanent magnet 2 12 corresponds to the position of the permanent magnet 1 2. When the permanent magnet 1 2 is close to the lower surface of the isolation body 3, the permanent magnet 1 2 can attract the permanent magnet 2 12 to descend. The permanent magnet 2 12 drives the rotating hook 11 to rotate in the opposite direction during the descent process, and the upper end of the rotating hook 11 retracts into the inner cavity 1. The state of the locking assembly is as shown Figure 5 shown.

[0033] In addition, a plurality of rubber sealing rings are disposed on the inner surface of the insertion hole 6 , and the plurality of rubber sealing rings are arranged along the length direction of the insertion hole 6 .

[0034] In this embodiment, a feed port 15, an air inlet 16, a mounting port 17 and a stirring assembly 18 are provided at the upper end of the reactor body. The feed port 15 is used to put raw materials into the reactor body, and the air inlet 16 is used to introduce gas into the reactor body. Sealing valves are installed on the feed port 15 and the air inlet 16. After closing, the sealing valves can prevent the gas in the reactor body from diffusing out of the reactor body. The stirring assembly 18 penetrates the mounting port 17 and extends into the reactor body. The stirring assembly 18 is detachably connected to the mounting port 17, and the stirring assembly 18 and the mounting port 17 are sealed by a rubber sealing member. The stirring assembly 18 includes a motor, a bearing, a stirring shaft and a plurality of stirring blades. The motor is located above the reactor body and is connected to the upper surface of the reactor through a bracket. The bearing is installed in the mounting port 17. The mixing shaft passes through the bearing and is movably connected with the bearing. The upper end of the mixing shaft is connected to the rotating shaft of the motor through a coupling, and the motor can drive the mixing shaft to rotate. The lower end of the mixing shaft extends into the reactor body. A plurality of mixing blades are installed at the lower end of the mixing shaft. The gap between the mixing shaft, the bearing and the mounting port 17 is sealed by a rubber seal to ensure that the gas in the reactor body cannot diffuse to the outside of the reactor body through the gap between the mixing shaft, the bearing and the mounting port 17. A lighting component and a heating component are installed in the reactor body. The lighting component can project visible light or ultraviolet light in the reactor. The heating component is an electric heater. The heating component increases the temperature in the reactor body by electric heating. A discharge port is provided on the lower surface of the reactor body. A valve is installed at the discharge port. The valve can select a manual valve or an electric valve.

[0035] It should be noted that a touch screen controller is provided on the outer side of the reactor body, and the touch screen controller is respectively connected to the motor, the lighting component and the heating component, and the touch screen controller can control the operation of the motor, the lighting component and the heating component.

[0036] The electronic devices used in this technical solution are all existing products, and the technical solution of this application has no special requirements or changes to the structure of the above electronic devices;

[0037] During the implementation of this technical solution, those skilled in the art need to connect all electrical components in this case to their adapted power supplies through wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle of this technical solution and the working sequence between the electrical components. The detailed connection means are well-known technologies in this field. This technical solution mainly introduces the working principle and process, and no longer explains the electrical control.

[0038] During the implementation of the technical solution of the present application, the staff needs to first close the sealing valves on the feed port 15 and the air inlet 16, and at the same time close the valve at the discharge port to ensure that the inner cavity of the reactor body is completely closed. Then turn on the camera 13, display the real-time image of the inner cavity of the reactor body through the smart terminal, and then manually adjust the length of the long tube 7 extending into the inner cavity of the reactor body according to the needs of the cleaning area, and adjust the angle of the long tube 7 by turning it, such as Figure 2 As shown, the cleaning head 9 can reach the area that needs to be cleaned. It should be noted that during the adjustment process, the cleaning head 9 and the long tube 7 should be prevented from contacting and colliding with the stirring assembly 18. When the cleaning angle is not ideal, the staff can start the stirring assembly 18 and use the rotation of the stirring blades to assist the cleaning head 9 in cleaning the inner surface of the reactor body. When the cleaning head 9 reaches the area that needs to be cleaned, the staff first starts the high-pressure pump, and then squeezes the pressure switch on the rubber handle 8. At this time, the solenoid valve 10 is opened, and the cleaning liquid pumped by the high-pressure pump enters the long tube 7 and enters the cleaning head 9 through the one-way valve. The high-pressure cleaning liquid in the inner cavity of the cleaning head 9 is sprayed into the inner cavity of the reactor body through the nozzle to flush the inner cavity of the reactor; when it is necessary to readjust the cleaning position, the staff first releases the pressure switch, and then adjusts the position of the cleaning head 9 through the above process and presses the pressure switch again to implement the cleaning process.

[0039] Embodiment 2: A plurality of cleaning openings 14 are provided on the reactor body, and each cleaning opening 14 is provided with an isolator 3, a spherical body 5 and a cleaning assembly, so as to meet the cleaning requirements at different angles in the inner cavity of the reactor body. The number of cleaning openings 14 can be limited to 2-3. The rest is the same as in Embodiment 1.

[0040] Embodiment 3: The cleaning head 9 is removed, and a high-pressure rotating nozzle is installed at the lower end of the long tube 7. When the high-pressure cleaning liquid in the long tube 7 enters the high-pressure rotating nozzle, the high-pressure rotating nozzle can rotate with the help of the anti-impact force of the cleaning liquid during the process of spraying the cleaning liquid, thereby better improving the cleaning effect of the inner cavity of the reactor body. The rest is the same as Embodiment 1.

[0041] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A cleaning mechanism for a phosgene reactor, comprising an isolating body (3), wherein the isolating body (3) is used to block a cleaning opening (14) of a reactor body, and wherein: A reserved hole (4) is provided at the center of the isolating body (3), the reserved hole (4) connects the upper surface and the lower surface of the isolating body (3), the inner cavity of the reserved hole (4) is spherical, a spherical body (5) is installed in the reserved hole (4), the spherical body (5) can roll in the reserved hole (4), a plug hole (6) is provided on the spherical body (5), the plug hole (6) connects the upper end surface and the lower end surface of the spherical body (5), a cleaning component is inserted in the plug hole (6), and the cleaning component can be lifted and slid on the plug hole (6), a plurality of inner cavities (1) are provided in the isolating body (3), the inner cavities (1) are connected to the side of the isolating body (3), a locking component is provided in the inner cavity (1), the locking component can be linked with the cleaning component and lock and unlock the connection relationship between the isolating body (3) and the cleaning opening (14); The cleaning assembly comprises a permanent magnet (2), a long tube (7), a rubber handle (8), a cleaning head (9) and a solenoid valve (10). The long tube (7) passes through the insertion hole (6). The long tube (7) can be lifted and slid on the insertion hole (6). The solenoid valve (10) is installed at the upper end of the long tube (7). The solenoid valve (10) is connected to a high-pressure pump via a hose. The rubber handle (8) is sleeved on the long tube (7). A pressure switch is provided on the rubber handle (8). The pressure switch is connected to the control end of the solenoid valve (10) via a wire. The permanent magnet (2) and the cleaning head (9) are both installed on the long tube. (7), the cleaning head (9) is connected to the lower end of the long tube (7), the permanent magnet 1 (2) is located above the cleaning head (9), and the cleaning head (9) is provided with a plurality of nozzles, and the plurality of nozzles are distributed on the outer surface of the cleaning head (9); the locking assembly comprises a rotating claw (11), the rotating claw (11) can rotate forwardly under the drive of a spring, the upper end of the rotating claw can protrude from the side surface of the isolation body (3), and the lower end of the rotating claw is installed with a permanent magnet 2 (12), and when the permanent magnet 2 (12) descends, it can drive the upper end of the rotating claw (11) to retract into the inner cavity (1).

2. A cleaning mechanism for a phosgene reactor according to claim 1, characterized in that: The upper end port of the cleaning head (9) is detachably connected to the lower end port of the long tube (7), the permanent magnet one (2) is sleeved on the long tube (7), and a counterweight is installed on the lower end surface of the cleaning head (9).

3. A cleaning mechanism for a phosgene reactor according to claim 2, characterized in that: A one-way valve is provided in the long tube (7), and the conducting direction of the one-way valve is from the upper end of the long tube (7) to the lower end of the long tube (7).

4. A cleaning mechanism for a phosgene reactor according to claim 1, characterized in that: A plurality of sealing strips are arranged on the outer surface of the spherical body (5), and the sealing strips are capable of sealing the gap between the outer surface of the spherical body (5) and the inner surface of the reserved hole (4). When the upper end of the rotating hook (11) protrudes from the side surface of the isolation body (3), it is capable of buckling the inner side surface of the cleaning opening (14) to form a locking structure.

5. A cleaning mechanism for a phosgene reactor according to claim 4, characterized in that: The sealing strip on the spherical body (5) can be disassembled and replaced.

6. A cleaning mechanism for a phosgene reactor according to claim 5, characterized in that: The inner surface of the insertion hole (6) is provided with a plurality of rubber sealing rings, and the plurality of rubber sealing rings are arranged along the length direction of the insertion hole (6).

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