Magnetic coupling transmission seal

Abstract

The application discloses a magnetic coupling transmission sealing device, and belongs to the technical field of chemical sealing devices.The technical problem of poor cooling effect and unstable operation of the sealing device cooling system in the prior art is solved.The application comprises a transmission mechanism and a cooling system.The transmission mechanism comprises a supporting device, a power transmission device and a stirring device.The supporting device is provided with a support structure and a supporting body, and the power transmission device is connected to the support structure.The power transmission device is provided with a flow channel connected to the cooling system.The cooling system is provided with a cooling circulation temperature control assembly composed of a fluid inlet, a fluid outlet and a temperature control device, and a control system.The application has the advantages of simple structure and stable operation, and the system intelligent temperature control is achieved through the control system, so that the magnetic coupling transmission sealing device is circularly operated within a predetermined temperature, the service life of the inner and outer magnetic steel bodies is effectively prolonged, and the stability and durability of the equipment operation are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of chemical sealing devices, and more specifically, relates to a magnetic coupling transmission sealing device. Background Technology

[0002] The main sealing methods for stirred reaction equipment include magnetic coupling drive seals, mechanical seals, and packing seals. Magnetic coupling drive seals are static seals, while mechanical seals and packing seals are dynamic seals. Stirred reaction equipment employs a static sealing structure, where the power transmission between the internal agitator and the external motor is achieved through a magnetic coupling, resulting in contactless torque transmission. The seal utilizes high-strength bolts, nuts, and gaskets for static sealing, completely resolving leakage problems that mechanical seals and packing seals cannot address. This ensures that all stirring components are completely enclosed within the equipment, guaranteeing safe operation and preventing leakage. Therefore, magnetic coupling drive seals are increasingly used in stirred reaction equipment operating in high-pressure, highly toxic, flammable, and explosive environments.

[0003] In existing magnetic coupling transmission sealing devices, the motor drives the external magnet to move. The external magnet and the internal magnet are magnetically coupled, transferring the motor's kinetic energy to the internal magnet. The internal magnet then links the upper and lower stirring shafts and the agitator to complete the rotation of the agitator, thus realizing the power transmission of the magnetic coupling seal. However, there is a sealing cover separating the external and internal magnets, which creates a sealed space between them. During the magnetic coupling transmission of motor power, i.e., during energy conversion, kinetic energy is converted into heat energy. This heat energy is detrimental to the internal and external magnets of the magnetic coupling seal and must be eliminated or replaced to maintain the temperature within a favorable range for the magnets.

[0004] Although the existing equipment is equipped with a cooling system, the cooling water circulation structure on the support body is limited by its internal structure, resulting in insufficient cooling effect. Furthermore, the cooling water circulation structure on the support body is prone to leakage due to welding defects, causing unstable equipment operation. The cooling fluid flowing between the external support and the sealing cover is slow to cool due to the rotation of the magnet. Therefore, when the existing magnetic sealing technology is applied to the mixing equipment, the cooling circulation must be turned on for a long time before the equipment starts and after it stops. Summary of the Invention

[0005] This invention addresses the technical problems existing in the prior art by providing a magnetic coupling transmission sealing device with a simple structure, good temperature control, and the ability to effectively extend the service life of the inner and outer magnetic steel bodies.

[0006] To address the aforementioned technical problems, this invention provides a magnetic coupling transmission sealing device, comprising a transmission mechanism and a cooling system. The transmission mechanism includes a support device, a power transmission device, and a stirring device. The support device has a bracket structure and a support body, and the power transmission device is connected to the bracket structure. The power transmission device has a flow channel connected to the cooling system. The cooling system has a cooling circulation temperature control component and a control system consisting of a fluid inlet, a fluid outlet, and a temperature control device.

[0007] Preferably, the control system includes a first circulation control system and a second circulation control system, and the first circulation control system, the second circulation control system and the transmission mechanism constitute a single-fluid circulation system or a dual-fluid circulation system.

[0008] Preferably, the single-fluid circulation system consists of a fluid inlet, a fluid outlet, and a circulation pipe installed on the control system and the transmission mechanism. The single-fluid circulation system has multiple sets of fluid circulation routes.

[0009] Preferably, the support structure is provided with a carrier inlet component, a drain outlet, and a refrigerant circulation inlet, a refrigerant circulation outlet, and multiple sets of circulation ports connected to the cooling system.

[0010] Preferably, multiple sets of circulation ports are connected to the first circulation control system, and the refrigerant circulation inlet and refrigerant circulation outlet are connected to the second circulation control system. The first circulation control system and the second circulation control system perform multi-circulation control of the refrigerant fluid between the power transmission device and the support structure.

[0011] Preferably, the power transmission device is provided with an external magnet body, which is installed inside the support structure. The external magnet body is provided with a fluid channel, which is provided with a fluid inlet and a fluid outlet.

[0012] Preferably, the fluid channels are arranged in an alternating pattern on the upper and lower layers, and the fluid inlet is tangent to the outer magnet.

[0013] Preferably, the radial deviation angle between the upper and lower layers of the fluid channel is 30-45°.

[0014] Preferably, the support structure is provided with a temperature control port pipe, the temperature control port pipe is connected to a temperature control device, and the temperature control port pipe is connected to the cooling system.

[0015] Preferably, the power transmission device has an outer magnet and an inner magnet, the inner magnet is set inside the outer magnet, a sealing cover is provided between the outer magnet and the inner magnet, the inner magnet is installed on the support body, and the outer magnet is connected to the bracket structure through a connecting structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The magnetic coupling transmission sealing device provided by this invention operates stably and has intelligent temperature control. It is suitable for systems that control material sublimation in stirred reactors. The temperature measuring instrument in the system provides signals, and under the control of the circulation control system, it can realize the operation of single-fluid circulation system and dual-fluid circulation system. It controls the movement of the refrigerant fluid between the outer magnet and the support structure in the circulation system and performs multi-circulation control, intelligently adjusting the flow rate and circulation sequence. It controls the circulating refrigerant in the system to maintain a constant and preset temperature range, thereby realizing the system temperature control and constant temperature function. This achieves intelligent temperature control of the system, effectively extending the service life of the inner and outer magnets, ensuring that the magnetic coupling transmission sealing device circulates within the predetermined temperature, and improving the stability and durability of the equipment operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the transmission mechanism of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the support structure of the present invention;

[0022] Figure 4 This is a schematic diagram of an embodiment of the refrigerant inlet and outlet arrangement of the present invention;

[0023] Figure 5 This is a schematic diagram of the second embodiment of the refrigerant inlet and outlet arrangement of the present invention. Figure 1 ;

[0024] Figure 6 This is a schematic diagram of the second embodiment of the refrigerant inlet and outlet arrangement of the present invention. Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the refrigerant inlet and outlet arrangement of the present invention, in Embodiment 3. Figure 1 ;

[0026] Figure 8 This is a schematic diagram of the refrigerant inlet and outlet arrangement of the present invention, in Embodiment 3. Figure 2 ;

[0027] Figure 9 This is a schematic diagram of the structure of the outer magnet of the present invention;

[0028] Figure 10 For the present invention Figure 9 A magnified view of a portion of point D in the middle;

[0029] Figure 11 For the present invention Figure 9 Sectional view of AA;

[0030] Figure 12 For the present invention Figure 9 BB section view;

[0031] Figure 13 For the present invention Figure 9 CC section view;

[0032] Figure 14 This is a schematic diagram of the integral plate processing of the fluid channel of the present invention;

[0033] Figure 15 This is a schematic diagram of the fluid channel fabricated by welding according to the present invention.

[0034] Explanation of symbols in the diagram:

[0035] 1. Support structure; 2. Support body; 3. Outer magnet body; 4. Inner magnet body; 5. Sealing cover; 6. Connecting flange assembly; 7. Connecting bolt assembly; 8. Stirring device; 9. Carrier inlet component; 10. Drain outlet; 11. First circulation port; 12. Second circulation port; 13. Third circulation port; 14. Refrigerant circulation inlet; 15. Refrigerant circulation outlet; 16. First circulation control system; 17. Second circulation control system; 18. Circulation pipeline; 19. Upper temperature control port connection; 20. Lower temperature control port connection; 21. Viewing window; 22. Grease inlet and outlet pipes; 23. Internal cooling water inlet and outlet pipes; 24. Fluid channel; 25. Channel fluid inlet; 26. Channel fluid outlet; 27. Balance hole; 28. Blade. Detailed Implementation

[0036] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0037] Please see Figure 1 , Figure 2This invention provides a magnetic coupling transmission sealing device, including a transmission mechanism and a cooling system. The transmission mechanism includes a support device, a power transmission device, and a stirring device 8. The support device has a bracket structure 1 and a support body 2, and the power transmission device is connected to the bracket structure 1. The power transmission device has a flow channel connected to the cooling system. The cooling system has a cooling circulation temperature control component and a control system consisting of a fluid inlet, a fluid outlet, and a temperature control device. This invention provides a novel magnetic coupling transmission sealing device with a constant temperature cooling jacket, which has intelligent temperature control, effectively ensuring that the magnet operates within the optimal temperature range and effectively extending the service life of the power transmission device composed of inner and outer magnets.

[0038] Specifically, such as Figure 1 As shown, in this embodiment, the transmission mechanism includes a bracket structure 1, a support body 2, an outer magnet 3, an inner magnet 4, a sealing cover 5, a connecting flange group 6, and a connecting bolt group 7. The power transmission device consists of the outer magnet 3 and the inner magnet 4. The inner magnet 4 is disposed inside the outer magnet 3, and the sealing cover 5 is disposed between the outer magnet 3 and the inner magnet 4. The sealing cover 5 is used to isolate the inside of the equipment from the outside. The support body 2 mainly plays a supporting role. The inner magnet 4 is installed on the upper part of the support body 2, and the lower end of the support body 2 is connected to a stirring device 8.

[0039] Both the outer magnet 3 and the inner magnet 4 are installed inside the support structure 1. The support structure 1 is used to support the motor and the reducer. The outer magnet 3 is connected to the support structure 1 through the connecting flange group 6 and is used to connect to the external power. The lower end of the support body 2 is provided with a connecting flange and a connecting bolt group 7. The stirring device 8 passes through the center of the connecting flange and is connected to the inner magnet 4. The inner magnet 4 is used to receive power transmission and then transmit it to the stirring shaft of the stirring device 8 below.

[0040] The above content refers to existing technology, and specific details will not be elaborated here.

[0041] like Figure 1 As shown, the support structure 1 is equipped with a carrier inlet component 9 and a drain outlet 10. The carrier inlet component 9 is located at the upper part of the support structure 1 and is used to fill the refrigerant liquid and also for the subsequent discharge of gas from the upper space. The drain outlet 10 is located at the lower part of the support structure 1. The heat exchange medium fluid enters the interior of the support structure 1 through the carrier inlet component 9, and when the equipment is stopped, the heat exchange medium fluid is drained through the drain outlet 10.

[0042] Furthermore, such as Figure 3As shown, the support structure 1 is provided with a first circulation port 11, a second circulation port 12, and a third circulation port 13, which are arranged sequentially from bottom to top on the support structure 1. The support structure 1 is also connected to a refrigerant circulation inlet 14 and a refrigerant circulation outlet 15. The refrigerant circulation inlet 14 is located at the lower part of the support structure 1, and the refrigerant circulation outlet 15 is located at the upper part of the support structure 1. The refrigerant circulation inlet 14, the refrigerant circulation outlet 15, and the multiple circulation ports are the channels for refrigerant to enter and exit. Simultaneously, the refrigerant circulation inlet 14, the refrigerant circulation outlet 15, and the multiple circulation ports are all connected to the cooling system, forming a refrigerant circulation temperature control system for intelligent temperature control of the equipment.

[0043] Specifically, such as Figure 2 As shown, the control system includes a first circulation control system 16 and a second circulation control system 17. The first circulation control system 16 and the second circulation control system 17 are connected to the fluid inlet and fluid outlet provided on the support structure 1 through circulation pipes 18. The first circulation control system 16, the second circulation control system 17, and the transmission mechanism can form three sets of fluid circulation systems, namely the first fluid circulation system, the second fluid circulation system, and the third fluid circulation system. The first fluid circulation system consists of a first circulation port 11 and a third circulation port 13, wherein the first circulation port 11 is the fluid inlet and the third circulation port 13 is the fluid outlet. The second fluid circulation system consists of a first circulation port 11, a second circulation port 12, and a third circulation port 13, wherein the second circulation port 12 is the fluid inlet and the first circulation port 11 and the third circulation port 13 are the fluid outlets. The third fluid circulation system consists of a refrigerant circulation inlet 14 and a refrigerant circulation outlet 15, wherein the refrigerant circulation inlet 14 is the fluid inlet and the refrigerant circulation outlet 15 is the fluid outlet.

[0044] Furthermore, the first circulation control system 16 and the second circulation control system 17 in this invention are composed of conventional equipment such as electrical instruments, valves, and control circuits, which can realize the control of fluid in each pipeline and the switching of valves according to the refrigerant temperature that needs to be maintained during equipment operation.

[0045] Furthermore, such as Figure 2As shown, the support structure 1 is equipped with a temperature control port connector, which includes an upper temperature control port connector 19 and a lower temperature control port connector 20. Both the upper temperature control port connector 19 and the lower temperature control port connector 20 are connected to the first circulation control system 16 and the second circulation control system 17. Temperature instruments are installed on the upper temperature control port connector 19 and the lower temperature control port connector 20 to provide temperature signals and feed them back to the control system for system temperature control. The first circulation control system 16 and the second circulation control system 17 control the first fluid circulation system, the second fluid circulation system, and the third fluid circulation system, respectively, thereby realizing the operation of the single-fluid circulation system and the dual-fluid circulation system. The system controls the movement of the cooling medium in the circulation system and maintains the circulating coolant in the system within a constant and preset temperature range to achieve the function of system temperature control and constant temperature.

[0046] Specifically, the single-fluid circulation system can be divided into three fluid circulation routes: the first fluid circulation route, the second fluid circulation route, and the third fluid circulation route. These three fluid circulation routes correspond to the first fluid circulation system, the second fluid circulation system, and the third fluid circulation system, respectively. The third fluid circulation route has the best heat exchange effect on the cold flow, while the first fluid circulation route has the lowest heat exchange effect on the cold flow.

[0047] The dual-fluid circulation system is composed of the aforementioned third fluid circulation system combined with the first fluid circulation system and the second fluid circulation system, and is controlled by the first circulation control system and the second circulation control system.

[0048] Furthermore, as a preferred embodiment of the present invention, the arrangement of the refrigerant inlet and outlet can be configured in the following ways depending on the amount of heat exchange:

[0049] Example 1

[0050] like Figure 4 As shown, the first circulation port 11, the second circulation port 12, the third circulation port 13, the refrigerant circulation inlet 14, the refrigerant circulation outlet 15, and the connected circulation pipe 18 are all single-pipe configurations.

[0051] Example 2

[0052] like Figure 5 , Figure 6 As shown, each of the first circulation port 11, the second circulation port 12, and the third circulation port 13 is arranged with multiple pipes. Figure 5 It is designed for three pipelines. Figure 6 It is configured with six pipes, and more than one additional arrangement can be added according to the actual heat exchange needs, while the refrigerant circulation inlet 14 and refrigerant circulation outlet 15 are configured with single pipes.

[0053] Example 3

[0054] like Figure 7 , Figure 8 As shown, the refrigerant circulation inlet 14 and refrigerant circulation outlet 15 are arranged in a single-pipe configuration, and are configured in an inner and outer double-layer structure. The inner and outer circulation loops can be centrally controlled or individually controlled. Figure 8 A schematic diagram for controlling the inner and outer loops separately.

[0055] Furthermore, multiple pipelines are integrated through external circulation pipes, and the flow rate and velocity of each channel are controlled by a circulation control system.

[0056] Furthermore, such as Figure 1 As shown, a viewing window 21 is provided on the support structure 1, which is used to observe the movement of the refrigerant inside the equipment.

[0057] Furthermore, such as Figure 1 As shown, the transmission mechanism is connected to a lubrication component and a cooling component. The lubrication component is equipped with a grease inlet / outlet pipe 22 for injecting grease into the device to lubricate bearings and other equipment. The cooling component is equipped with an internal cooling water inlet / outlet pipe 23 for cooling water to be introduced into the device for cooling.

[0058] like Figure 9 , Figure 10 , Figure 14 As shown, the outer magnetic steel body 3 is provided with a channel for fluid flow. The fluid channel 24 is provided with a channel fluid inlet 25 and a channel fluid outlet 26. The outer magnetic steel body 3 is provided with a balance hole 27 to balance the spatial pressure of the outer magnetic steel body 3. At the same time, the balance hole 27 can also be used as a channel for refrigerant fluid. Multiple balance holes 27 are provided and are evenly distributed on the upper end of the outer magnetic steel body 3.

[0059] The upper inner side of the outer magnet body 3 is provided with blades 28 fixed at the top. The number of blades 28 is the same as the number of balance holes 27. The blades 28 are set on the clockwise side of the balance holes 27 and cooperate with the balance holes 27. The blades 28 are welded and fixed on the outer magnet body 3.

[0060] Figures 11-13 This is a cross-sectional schematic diagram of the fluid channel 24 on the outer magnetic steel body 3. The channels of each layer are staggered. When the outer magnetic steel body 3 is in operation, the fluid inlet 25 of the channel is tangential to the outer magnetic steel body 3 and is flared outward, which can cut the cooling medium and allow it to enter the interior of the channel. Then it flows out from the fluid outlet 26 of the channel. The fluid in the fluid channel 24 achieves intelligent heat exchange effect, ensuring that the outer magnetic steel body 3 and the inner magnetic steel body 4 operate within the optimal temperature range.

[0061] Furthermore, the fluid channels 24 of the upper and lower layers of the outer magnetic steel body 3 are radially offset from each other by 30°-45°, which can be determined according to the size of the outer magnetic steel body 3.

[0062] Furthermore, the fluid channel 24 can be machined in sections or welded together. Figure 14 This is a schematic diagram of the fluid channels for processing a single plate. Figure 15 This is a schematic diagram of a fluid channel fabricated using welding methods.

[0063] In this invention, the outer magnetic steel body 3 is provided with structures such as magnetic steel blocks and magnetic steel protective layers. The magnetic steel blocks and magnetic steel protective layers are existing technologies and will not be described in detail here.

[0064] The magnetic coupling transmission sealing device provided by this invention operates stably and has intelligent temperature control. It is suitable for systems that control material sublimation in stirred reactors. The temperature measuring instrument in the system provides signals, and under the control of the circulation control system, it can realize the operation of single-fluid circulation system and dual-fluid circulation system. It controls the movement of the refrigerant fluid between the outer magnet 3 and the support structure 1 in the circulation system and performs multi-circulation control, intelligently adjusting the flow rate and circulation sequence. It controls the circulating refrigerant in the system to maintain a constant and preset temperature range, thereby realizing the system temperature control and constant temperature function. This achieves intelligent temperature control of the system, effectively extending the service life of the inner and outer magnets, ensuring that the magnetic coupling transmission sealing device circulates within the predetermined temperature, and improving the stability and durability of the equipment operation.

[0065] Furthermore, the outer magnetic steel body 3 is provided with a channel for fluid flow. When the outer magnetic steel body 3 is in operation, the fluid inlet 25 of the channel is tangential to the outer magnetic steel body 3 and is outwardly flared, which can cut the cooling medium and allow it to enter the interior of the channel, and then flow out through the fluid outlet 26 of the channel, achieving intelligent heat exchange effect and ensuring that the outer magnetic steel body 3 and the inner magnetic steel body 4 operate within the optimal temperature range.

[0066] In the description of this invention, it should be understood that terms such as “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0068] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A magnetically coupled transmission sealing device, comprising a transmission mechanism and a cooling system, wherein the transmission mechanism includes a support device, a power transmission device, and a stirring device, characterized in that, The supporting device includes a bracket structure and a support body, and the power transmission device is connected to the bracket structure. The power transmission device has a flow channel connected to the cooling system. The cooling system includes a cooling circulation temperature control component and a control system consisting of a fluid inlet, a fluid outlet, and a temperature control device. The power transmission device has an outer magnet body, which is disposed within the bracket structure. The fluid channel has a fluid inlet and a fluid outlet. The outer magnet body has a fluid channel, with upper and lower layers of the fluid channel arranged alternately. The fluid inlet is tangent to the outer magnet body.

2. The magnetic coupling transmission sealing device according to claim 1, characterized in that, The control system includes a first circulation control system and a second circulation control system. The first circulation control system, the second circulation control system, and the transmission mechanism together form a single-fluid circulation system or a dual-fluid circulation system.

3. The magnetic coupling transmission sealing device according to claim 2, characterized in that, The single-fluid circulation system consists of a fluid inlet, a fluid outlet, and a circulation pipe installed on the control system and transmission mechanism. The single-fluid circulation system has multiple sets of fluid circulation routes.

4. A magnetic coupling transmission sealing device according to claim 2 or 3, characterized in that, The support structure is equipped with a carrier inlet component, a drain outlet, and a refrigerant circulation inlet, a refrigerant circulation outlet, and multiple sets of circulation ports connected to the cooling system.

5. A magnetic coupling transmission sealing device according to claim 4, characterized in that, The multiple sets of circulation ports are connected to the first circulation control system, and the refrigerant circulation inlet and refrigerant circulation outlet are connected to the second circulation control system. The first circulation control system and the second circulation control system perform multi-circulation control of the refrigerant fluid between the power transmission device and the support structure.

6. The magnetic coupling transmission sealing device according to claim 1, characterized in that, The radial deviation angle between the upper and lower layers of the fluid channel is 30-45°.

7. The magnetic coupling transmission sealing device according to claim 1, characterized in that, The support structure is provided with a temperature control port pipe, and a temperature control device is connected to the temperature control port pipe. The temperature control port pipe is connected to the cooling system.

8. A magnetic coupling transmission sealing device according to claim 1, characterized in that, The power transmission device is provided with an outer magnet and an inner magnet. The inner magnet is disposed inside the outer magnet. A sealing cover is provided between the outer magnet and the inner magnet. The inner magnet is mounted on the support body. The outer magnet is connected to the bracket structure through a connecting structure.

Images