Seal-free induction cleaning mechanism for reaction tank and related device and method

Abstract

The present application relates to a seal-free induction cleaning mechanism for a reaction tank and a related device and method, the cleaning mechanism comprises a scraper, the scraper comprises a main body, a connecting part and a mounting part, the main body is provided with a scraping blade, the main body is provided on the side wall of the reaction tank and is circumferentially rotatably connected to the reaction tank through the connecting part, the mounting part is provided on the main body and a first magnetic part is provided on the mounting part for receiving an external magnetic field to receive a component force in the circumferential direction of the reaction tank. The present application has the advantage of extending the continuous working time of the reactor.

Description

Technical Field

[0001] The present application relates to the field of mixing reactors, and in particular to a seal-free induction cleaning mechanism for a reaction tank and related devices and methods. Background Art

[0002] A mixing reactor is a device used to mix raw materials and produce chemical reactions. The structure of the reactor is diverse, such as cylindrical. Usually, during the reaction process, the reactor often produces sediments and accumulates on the inner wall. The current method uses high-pressure water and high-pressure nitrogen cleaning methods, but the cleaning effect is incomplete and cannot be improved. There are also methods in the current method to remove sediments by modifying the design structure of the reactor. For example, a spiral scraper is connected to the reactor through a bearing. When the spiral scraper is driven to rotate, it repeatedly sweeps across the inner wall of the reaction tank, thereby achieving a self-cleaning effect. In the related art, a method of driving with an external motor is adopted. In the design, the shaft of the external motor is used to penetrate the reactor to connect the rotating scraper, and then the cleaning capacity is adjusted by controlling the speed of the external motor.

[0003] However, the solution using an external motor drive has the following problems: During long-term use, the shaft seal of the external motor may age and wear, causing toxic reaction gases to leak out. Since the reaction tank is not made of transparent material, the operation status of the scraper inside the reaction chamber cannot be judged by naked eyes. It can only be disassembled after the blockage and downtime, which will cause sudden interruption of the process. This interruption will cause great damage to the semi-finished products of advanced processes, and the scrapping amount is often very expensive. In addition, it takes a long time to maintain and restore the machine, which greatly damages the utilization rate and output value. Summary of the invention

[0004] In order to extend the continuous working time of the reactor, the present application provides a seal-free induction cleaning mechanism for a reaction tank and related devices and methods.

[0005] In the first aspect, the present application provides a seal-free induction cleaning mechanism for a reaction tank, which adopts the following technical solution:

[0006] A seal-free induction cleaning mechanism for a reaction tank comprises a scraper, wherein the scraper comprises a main body, a connecting portion and a mounting portion, wherein a scraping blade is arranged on the main body, the main body is arranged on the side wall of the reaction tank and is rotatably connected to the reaction tank via the connecting portion, and the mounting portion is arranged on the main body and is provided with a first magnetic member for receiving an external magnetic field so as to be subjected to a component force in the circumferential direction of the reaction tank.

[0007] By adopting the above technical solution, when the first magnetic part receives the external magnetic field, it will be subjected to thrust or pulling force, which can generate a component force in the circumferential direction of the reaction tank, so that the scraper body connected to the first magnetic part rotates in the circumferential direction of the reaction tank. The scraper blade can continuously scrape the inner wall of the reaction tank to remove sediment. In this solution, the method of driving the scraper by an external magnetic field is adopted, which replaces the method of driving by an external motor, thereby avoiding the setting of a shaft seal for the external motor. On the one hand, the overall structure is simplified, which is convenient for production and installation. On the other hand, the device can assist in self-cleaning of dust, greatly prolong the normal working time of the reaction chamber, improve the continuous operation rate of the production line, and reduce the loss of sudden downtime.

[0008] Optionally, the main body extends axially on the inner wall of the reaction tank.

[0009] Optionally, the main body is in a rod shape, the scraping blade is arranged on a side surface of the main body and extends along the axial direction of the main body, and the scraping blade is used to abut against the reaction tank.

[0010] By adopting the above technical solution, it is beneficial to increase the contact area between the scraper blade and the inner wall of the reaction tank, thereby improving the cleaning effect.

[0011] Optionally, there are one or more main body parts, and all of the main body parts are connected to the connecting part.

[0012] By adopting the above technical solution, it is avoided to set up multiple connecting parts, and the main body is rotatably connected to the reaction tank through the same connecting part. At the same time, the setting of multiple main bodies helps to improve the cleaning efficiency.

[0013] Optionally, the connecting portion is in a ring shape that matches the inner wall of the reaction tank.

[0014] Optionally, the connecting portion is connected to the inner wall of the reaction tank via a bearing.

[0015] Optionally, the middle portion of the connecting portion is used to communicate with the liquid inlet of the reaction tank.

[0016] By adopting the above technical solution, the connecting part is connected to the reaction tank through the bearing, and the middle part of the connecting part is used for the passage of the Venturi water column passing through the feed port of the reaction tank.

[0017] Optionally, the mounting portion is extended along the axial direction of the reaction tank.

[0018] By adopting the above technical solution, the first magnetic component is equivalent to being arranged on the main body.

[0019] Optionally, the mounting portion is arranged to extend radially of the reaction tank.

[0020] Optionally, a scraping blade is provided on the mounting portion.

[0021] By adopting the above technical solution, the mounting part can clean the bottom of the reaction tank while rotating along with the main body.

[0022] Optionally, the first magnetic component is one and is mounted on a mounting portion on the main body.

[0023] By adopting the above technical solution, a single first magnetic component is utilized to interact with the external magnetic field, so that the external magnetic field generating device can conveniently adjust the direction and intensity of the magnetic field.

[0024] Optionally, the number of the first magnetic members is equal to the number of the main body parts, and the first magnetic members correspond one by one to one of the main body parts.

[0025] By adopting the above technical solution, the multiple first magnetic parts interact with the external magnetic fields respectively, generate driving effects and drive the main body, which helps to improve the driving ability and enhance the cleaning effect.

[0026] Optionally, the number of the first magnetic parts is plural and is less than the number of the main body parts, and the first magnetic parts correspond one by one to one of the main body parts.

[0027] By adopting the above technical solution, some installation parts may not be provided with the first magnetic part.

[0028] Optionally, one end of each connecting portion away from the main body cooperates to form a notch connected to the liquid outlet of the reaction tank.

[0029] By adopting the above technical solution, the stability of the overall structure of the scraper is increased.

[0030] Optionally, one end of each of the connecting parts away from the main body part is connected to each other to form an annular part, and two ends of the internal channel of the annular part are respectively connected to the liquid outlet of the reaction tank and the inner cavity of the reaction tank.

[0031] By adopting the above technical solution, the Venturi water column of the reactant can pass through the annular portion, that is, the overall design of the scraper will not interfere with the formation of the Venturi water column. In the related art, the rotating shaft of the external motor is arranged in the center of the top surface or the bottom surface of the reaction tank, which may interfere with the entry of the Venturi water column of the reactant or the outflow of the Venturi water column of the reactant, thus making the design of the tank body more complicated. The design of this solution makes the structure more symmetrical and simple, and the Venturi water column enters from the top surface of the reaction tank and passes out from the bottom surface, and it is not easy to contaminate the inner wall of the reaction tank.

[0032] In the second aspect, the present application provides a seal-free induction cleaning device for a reaction tank, which adopts the following technical solution:

[0033] A sealless induction cleaning device for a reaction tank comprises the sealless induction cleaning mechanism as described above, and also comprises a magnetic field generating device, wherein the magnetic field generating device is used to generate a magnetic field that causes a first magnetic part to have a magnetic effect so that the first magnetic part is subjected to a component force in the circumferential direction of the reaction tank.

[0034] By adopting the above technical solution, when the first magnetic part receives the magnetic field generated by the magnetic field generating device, it will be subjected to thrust or pulling force, which can generate a component force in the circumferential direction of the reaction tank, so that the scraper body connected to the first magnetic part rotates in the circumferential direction of the reaction tank. The scraper blade can continuously scrape on the inner wall of the reaction tank to remove sediment. In this solution, the method of driving the scraper by an external magnetic field is adopted, which replaces the method of driving by an external motor, thereby avoiding the setting of a shaft seal for the external motor. On the one hand, the overall structure is simplified, which is convenient for production and installation. On the other hand, the device can assist in self-cleaning of dust, greatly prolong the normal working time of the reaction chamber, improve the continuous operation rate of the production line, and reduce the loss of sudden downtime.

[0035] Optionally, the magnetic field generating device is used to pass an alternating current to generate a magnetic field with a changing direction that radiates outward from a magnetic pole, and the magnetic pole of the first magnetic member passes through a position opposite to the magnetic pole of the magnetic field generating device in a working state.

[0036] By adopting the above technical solution, the first magnetic member will pass through a position opposite to the magnetic pole of the magnetic field generating device in the process of following the rotation of the scraping member. Since the magnetic field generated by the magnetic field generating device diverges outward, if the magnetic field of the magnetic field generating device does not change, the magnetic field force exerted on the first magnetic member on both sides of the magnetic field generating device will have opposite force directions in the circumferential direction of the reaction tank. Based on this characteristic, when designing a driving method, it is possible to easily change the direction of the magnetic field generated by the magnetic field generating device so that the force of the first magnetic member in the circumferential direction of the reaction tank is always in the same direction.

[0037] Optionally, the sealless induction cleaning device further includes a second magnetic component disposed on the main body and a magnetic field detection mechanism for detecting the magnetic field strength of the magnetic field generated by the second magnetic component at a preset position.

[0038] By adopting the above technical solution, when the second magnetic member rotates synchronously with the main body, the relative position of the second magnetic member and the magnetic field detection mechanism will change, and the magnetic field strength generated by the second magnetic member at the magnetic field detection mechanism will be different. The magnetic field detection mechanism can determine the current position of the main body based on the different magnetic fields detected.

[0039] Optionally, the sealless induction cleaning device also includes a controller, which is used to receive magnetic field detection information output by the magnetic field detection mechanism based on the detected magnetic field, and control the magnetic field size and direction generated by the magnetic field detection mechanism based on the magnetic field detection information.

[0040] By adopting the above technical solution, the controller obtains the current position of the main body based on the magnetic field detection information, and controls the magnetic field size and direction generated by the magnetic field detection mechanism based on the position information, so that the first magnetic part can always be continuously subjected to a force in the tangential direction of the rotation direction.

[0041] In a third aspect, the present application provides a driving method, which adopts the following technical solution:

[0042] A driving method for the sealless induction cleaning device as described above, the driving method comprising the following steps:

[0043] Controlling the scraper to rotate at a preset initial speed;

[0044] Acquiring magnetic field detection information corresponding to the second magnetic member;

[0045] Compare the magnetic field detection information with the pre-stored comparison information to obtain the current position information of the scraper;

[0046] The direction of the magnetic field generated by the magnetic field generating device is controlled based on the current position information of the scraper.

[0047] By adopting the above technical solution, the setting of the external motor is cancelled, and the electromagnetic drive is used as a substitute for the power source. Since a constant magnetic field can only continuously attract or repel magnets, it cannot drive the magnets to rotate continuously, so it is necessary to adjust the direction of the magnetic field. In this scheme, the scraper is triggered at the beginning to enable the scraper to rotate, and the triggering method can be various. The magnetic field detection mechanism detects the magnetic field generated by the second magnetic member, and compares it with the pre-stored control information to obtain the current position information of the scraper. The relative position relationship between the first magnetic member and the magnetic field generating device can be obtained from the current position information of the scraper. When the first magnetic member passes through the position relative to the magnetic field generating device, the magnetic field generating device adjusts the direction of the generated magnetic field to keep the first magnetic member under the force in the tangential direction of the rotation direction.

[0048] Optionally, the control method further comprises the following steps:

[0049] Compare the magnetic field detection information with the pre-stored comparison information to obtain the current rotation speed information of the scraper;

[0050] The intensity of the magnetic field generated by the magnetic field generating device is controlled based on the current rotation speed information and the preset rotation speed information of the scraper.

[0051] Optionally, the control method further comprises the following steps:

[0052] Input information is obtained, and preset speed information is adjusted based on the input information.

[0053] By adopting the above technical solution, the required scraper speed is different due to different types of reactants. Therefore, in this solution, the current speed is adjusted based on the preset speed information as the target speed. Since the deposition is not generated at a constant rate during the reaction process, it is necessary to constantly adjust the magnetic field driving force and the scraper running speed to avoid insufficient or excessive cleaning force.

[0054] Optionally, the step of comparing the magnetic field detection information with the pre-stored comparison information to obtain the current position information of the scraper includes:

[0055] Obtaining magnetic field detection information at each moment within a preset time period before the current moment and using it as an information sequence;

[0056] Based on the comparison between the information sequence and the pre-stored comparison information, the current scraper position information is obtained.

[0057] By adopting the above technical solution, when there are multiple second magnetic parts, different second magnetic parts will have superimposed magnetic fields at the same position, so there may be multiple points with the same magnetic field strength. By collecting and comparing the magnetic field detection information at consecutive moments, the current position of the second magnetic part can be judged more accurately.

[0058] Optionally, the step of comparing the magnetic field detection information with the pre-stored comparison information to obtain the current rotation speed information of the scraper includes:

[0059] Obtaining magnetic field detection information at each moment within a preset time period before the current moment and using it as an information sequence;

[0060] Based on the comparison of the information sequence with the pre-stored comparison information, the current scraper position information is obtained;

[0061] Based on the current scraper position information and the scraper position information at the last moment, the current rotation speed information is calculated.

[0062] By adopting the above technical solution, since the data collection step is determined, the current rotation speed information can be easily obtained according to the position change.

[0063] Optionally, the step of controlling the direction of the magnetic field generated by the magnetic field generating device based on the current position information of the scraper comprises:

[0064] Acquire the current positions of the first area and the second area based on the current position information of the scraper, wherein the first area and the second area are respectively the front and rear areas of the first magnetic element in a preset rotation direction;

[0065] Based on the relative positional relationship between the magnetic field generating device and the first region and the second region, the direction of the magnetic field generated by the magnetic field generating device is adjusted.

[0066] Optionally, the step of adjusting the direction of the magnetic field generated by the magnetic field generating device based on the relative positional relationship between the magnetic field generating device and the first area and the second area includes:

[0067] Determine whether the magnetic field generating device is located in the first area, and if so, adjust the magnetic field generating device to generate a magnetic field that repels the magnetic pole of the first magnetic member close to the magnetic field generating device;

[0068] Determine whether the magnetic field generating device is located in the second area, and if so, adjust the magnetic field generating device to generate a magnetic field that attracts the magnetic pole of the first magnetic member close to the magnetic field generating device;

[0069] The first area and the second area corresponding to the same first magnetic member are arranged in sequence along a preset rotation direction.

[0070] By adopting the above technical solution, when the first magnetic part is located on the first area, it is subjected to the magnetic field pulling force generated by the magnetic field generating device. When the first magnetic part enters the second area, the direction of the magnetic field changes, and the first magnetic part is subjected to the thrust generated by the magnetic field. In summary, by adjusting the direction of the magnetic field based on the positional relationship between the first magnetic part on the first area and the second area, the first magnetic part can be continuously subjected to force in the tangential direction along the rotation direction.

[0071] Optionally, the step of controlling the magnetic field strength generated by the magnetic field generating device based on the current speed information and the preset speed information of the scraper includes:

[0072] Determine whether the current rotation speed is greater than the preset rotation speed. If so, reduce the average working current value of the magnetic field generating device; if not, increase the average working current value of the magnetic field generating device.

[0073] By adopting the above technical solution, reducing the average working current value of the magnetic field generating device can reduce the magnetic field force, and increasing the average working current value of the magnetic field generating device can increase the magnetic field force, thereby adjusting the rotation speed of the scraper.

[0074] In a fourth aspect, the present application provides an electronic device, which adopts the following technical solution:

[0075] An electronic device comprising:

[0076] one or more processors;

[0077] Memory;

[0078] One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured to execute the above-mentioned driving method.

[0079] In a fifth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0080] A computer-readable storage medium stores a computer program that can be loaded by a processor and execute the above method.

[0081] The storage medium stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set are loaded and executed by the processor to implement the driving method as described above.

[0082] In summary, the present application includes at least one of the following beneficial technical effects: the present invention adopts a shaft seal-free electromagnetic drive design to prevent the hidden danger of toxic gas leakage, and the door-type scraper design can simultaneously remove dust accumulation on the cavity wall and the cavity bottom without affecting the operation of the Venturi water column. At the same time, the scraper speed can be adjusted according to the reaction type, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1 It is an overall schematic diagram of a seal-free induction cleaning device for a reaction tank in an optional embodiment of the present application.

[0084] Figure 2 It is an overall schematic diagram of a seal-free induction cleaning mechanism for a reaction tank having two main bodies in an optional embodiment of the present application.

[0085] Figure 3 It is an overall schematic diagram of a seal-free induction cleaning mechanism for a reaction tank in an optional embodiment of the present application, in which the connection portion is located in the middle of the main body.

[0086] Figure 4 It is an overall schematic diagram of a seal-free induction cleaning mechanism for a reaction tank having three main parts in an optional embodiment of the present application.

[0087] Figure 5 It is a flowchart of the control method described in the optional embodiment of the present application.

[0088] Figure 6 It is a flowchart of the S3 sub-step in the optional embodiment of the present application.

[0089] Figure 7It is a flowchart of sub-step S4 in an optional embodiment of the present application.

[0090] Figure 8 It is a flowchart of sub-step S42 in an optional embodiment of the present application.

[0091] Fig. 9 It is a flowchart of sub-step S5 in an optional embodiment of the present application.

[0092] Description of reference numerals:

[0093] 1. Reaction tank; 11. Liquid inlet; 12. Liquid outlet;

[0094] 2. scraper; 21. body; 22. connection portion; 23. mounting portion; 24. scraper blade; 25. annular portion;

[0095] 3. First magnetic component; 4. Magnetic field generating device; 5. Second magnetic component; 6. Magnetic field detecting mechanism; 7. Controller. DETAILED DESCRIPTION

[0096] The present application is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0097] In the following description, for the purpose of explanation, many specific details are set forth in order to provide a thorough understanding of the inventive concept. As part of this specification, some of the drawings in the drawings of the present disclosure represent structures and devices in the form of block diagrams to avoid making the disclosed principles complicated and difficult to understand. For the sake of clarity, not all features of the actual implementation are necessary to be described. In addition, the language used in this disclosure has been selected primarily for readability and instructional purposes, and may not be selected to delineate or limit the subject matter of the present invention, thereby resorting to the necessary claims to determine such inventive subject matter. References to "a specific implementation" or "specific implementations" in this disclosure mean that the specific features, structures or characteristics described in conjunction with the specific implementation are included in at least one specific implementation, and multiple references to "a specific implementation" or "specific implementations" should not be understood as necessarily all referring to the same specific implementation.

[0098] Unless expressly limited, the terms "a", "an", and "the" are not intended to refer to a singular entity, but rather to include general categories of which specific examples may be used for illustration. Thus, the use of the terms "a" or "an" may mean any number of at least one, including "one", "one or more", "at least one", and "one or more than one". The term "or" means any of the alternatives and any combination of the alternatives, including all alternatives, unless the alternatives are expressly indicated to be mutually exclusive. The phrase "at least one of" when combined with a list of items refers to a single item in the list or any combination of the items in the list. The phrase does not require all of the listed items unless expressly limited to that.

[0099] The present application embodiment discloses a seal-free induction cleaning mechanism for a reaction tank. Figure 1 The sealless induction cleaning mechanism is used inside the reaction tank 1 to clean the inner wall of the reaction tank 1. The sealless induction cleaning mechanism includes a scraper 2, which is driven by magnetic force to rotate inside the reaction tank 1. It should be noted that Figure 1 The reaction tank 1 is cut away in half in order to show the structure of the scraper 2 inside the reaction tank 1 .

[0100] The scraper 2 includes a main body 21, a connecting portion 22 and a mounting portion 23. The main body 21 is provided with a scraping blade 24. The main body 21 is provided on the side wall of the reaction tank 1 and is rotatably connected to the reaction tank 1 via the connecting portion 22. The mounting portion 23 is provided on the main body 21 and a first magnetic member 3 is provided on the mounting portion 23. The connecting portion 22 is used as a fulcrum for connecting the main body 21 and the reaction tank 1 so that the main body 21 can stably rotate in the reaction tank 1. The mounting portion 23 is provided on the main body 21, and is mainly used to provide a mounting position for the first magnetic member 3 and transfer the external force exerted on the first magnetic member 3 to the main body 21. It should be noted that Figure 1 The dotted lines from the first magnetic element 3 are used to illustrate the magnetic field lines. Figure 1 The first magnetic member 3 is only used to illustrate the relative position relationship and connection relationship with other structures, and is not used to limit the shape of the first magnetic member 3. The length and thickness of the dotted line do not limit the magnetic field strength. Based on the placement of the first magnetic member 3 in different embodiments, the direction of the dotted line may also be different.

[0101] In different embodiments, the main body 21, the connecting portion 22 and the mounting portion 23 can be integrally formed or assembled and connected by parts. The assembly method can be a non-detachable connection method such as welding and riveting, or a detachable connection method such as bolting. In addition, in different embodiments, the main body 21, the connecting portion 22 and the mounting portion 23 can be made of the same material or different materials, for example, the three components are made of three different materials respectively. As an example, in a certain embodiment, the main body 21, the connecting portion 22 and the mounting portion 23 are made of Teflon material.

[0102] The connection portion 22 may be in different shapes, as long as it can be stably connected to the reaction tank 1 and can be rotatably connected to the reaction tank 1 in the circumferential direction of the reaction tank 1. As an example, in this embodiment, the connection portion 22 is annular in shape and matches the inner wall of the reaction tank 1 and is connected to the bearing of the reaction tank 1 (not shown in the figure). In different embodiments, the connection portion 22 may be arranged at the top of the reaction tank 1 (see Figure 2 ), middle (ref. Figure 3 , Figure 3 The reaction tank 1 is hidden in the middle) or the bottom, and the main body 21 is fixedly connected and rotated synchronously with the connecting portion 22. As an example, in this embodiment, the connecting portion 22 is arranged on the top of the inner wall of the reaction tank 1, and the middle part of the connecting portion 22 is used to communicate with the liquid inlet 11 of the reaction tank 1.

[0103] In order to improve the cleaning ability of the side wall of the reaction tank 1, the main body 21 extends axially on the inner side wall of the reaction tank 1 to ensure that the area swept by the main body 21 when rotating is as large as possible. In different embodiments, the shape of the main body 21 can be different, and it can be curved or straight, and its two ends can abut against the inner end surface of the reaction tank 1 or have a certain distance from the inner end surface of the reaction tank 1. As an example, in this embodiment, the main body 21 is rod-shaped, and the scraper 24 is arranged on the side of the main body 21 and extends axially along the main body 21. The scraper 24 is used to abut against the inner wall of the reaction tank 1.

[0104] It should be noted that the present application does not limit the number of the main body 21. The number of the main body 21 is at least one. When the number of the main body 21 is set to multiple, the main body 21 can be evenly distributed around the circumference of the reaction tank 1, or unevenly distributed. It only needs to adapt to the change law of the external magnetic field to rotate around the circumference of the reaction tank 1 based on the same principle. For example, the main body 21 can be a single setting, two settings that are evenly distributed around the circumference, or three settings that are evenly distributed around the circumference (see Figure 4), or three sets located in the same semicircular area in the circumferential direction. As an example, in this embodiment, the main body 21 is two sets evenly distributed in the circumferential direction, that is, located on a straight line with the same diameter of the reaction tank 1, and the top end of the main body 21 is connected to the connecting part 22, and the bottom end abuts against the bottom end surface of the reaction tank 1.

[0105] The mounting portion 23 is used to provide a mounting position for the first magnetic member 3, so its design shape and design position are relatively free. In different embodiments, the mounting portion 23 can be set along the axial extension of the reaction tank 1, or can be set along the radial extension of the reaction tank 1. As an example, in the present embodiment, the mounting portion 23 is connected to the bottom end of the main body 21 and is set along the radial extension of the reaction tank 1, and the end of the connecting portion 22 away from the main body 21 cooperates to form a gap connected to the liquid outlet 12 of the reaction tank 1. Optionally, the ends of the two connecting portions 22 away from the main body 21 are connected to each other to form an annular portion 25, and the two ends of the internal channel of the annular portion 25 are respectively connected to the liquid outlet 12 of the reaction tank 1 and the inner cavity of the reaction tank 1. It should be noted that when the number of the mounting portions 23 is multiple, they can all be connected to form an annular portion 25 in the direction away from the main body 21.

[0106] The extension shape of the mounting portion 23 may also be a straight extension or a curved extension, as long as it can provide stable support for the first magnetic member 3. Optionally, a scraper blade 24 is provided on the mounting portion 23, and the scraper blade 24 is used to abut against the bottom end surface of the reaction tank 1 to clean the bottom end surface of the reaction tank 1 during the rotation process.

[0107] The first magnetic member 3 is a material with strong magnetism, such as a permanent magnet. In this solution, the material and shape of the first magnetic member 3 are not limited, as long as it is difficult to have obvious demagnetization under long-term rotation. The first magnetic member 3 can interact with the external magnetic field to receive a component force in the circumferential direction of the reaction tank 1. In different embodiments, the number of the first magnetic members 3 can be different, and the number of the first magnetic members 3 can also correspond to or not correspond to the number of the main body 21, and the orientation of the magnetic poles can also be different. As long as the change law of the external magnetic field changes adaptively, the first magnetic member 3 can be driven based on the same principle. For example, in a certain embodiment, the first magnetic member 3 is one and is installed on a mounting portion 23 on a main body 21. In another embodiment, the number of the first magnetic members 3 is equal to the number of the main body 21, and the first magnetic member 3 corresponds to one main body 21 one by one. In another embodiment, the number of the first magnetic members 3 is multiple and the number is less than the number of the main body 21, and the first magnetic member 3 corresponds to one main body 21 one by one. As an example, in the embodiment of the present application, there are two first magnetic members 3 , which are respectively arranged on one side of the two mounting portions 23 away from the scraping blade 24 , and one magnetic pole of the first magnetic member 3 is arranged toward the scraping blade 24 .

[0108] The implementation principle of a seal-free induction cleaning mechanism for a reaction tank described in the embodiment of the present application is:

[0109] When the first magnetic member 3 receives the effect of the external magnetic field, it will be subjected to thrust or pulling force, which can generate a component force in the circumferential direction of the reaction tank 1, so that the main body 21 of the scraper 2 connected to the first magnetic member 3 rotates in the circumferential direction of the reaction tank 1. The scraper blade 24 can continuously scrape the inner wall of the reaction tank 1 to remove sediment. In this solution, the scraper 2 is driven by an external magnetic field instead of an external motor, thereby avoiding the setting of a shaft seal for the external motor. On the one hand, the overall structure is simplified, which is convenient for production and installation. On the other hand, the device can assist in self-cleaning of dust, greatly prolong the normal working time of the reaction chamber, improve the continuous operation rate of the production line, and reduce the loss of sudden downtime.

[0110] The present application also discloses a seal-free induction cleaning device for a reaction tank. Figure 1 The sealless induction cleaning device comprises the sealless induction cleaning mechanism and the magnetic field generating device 4, the magnetic field generating device 4 is used to generate a magnetic field that causes the first magnetic member 3 to have a magnetic effect so that the first magnetic member 3 is subjected to a force component in the circumferential direction of the reaction tank 1. It should be noted that Figure 1 The dotted lines emitted by the upper magnetic field generating device 4 are used to illustrate the magnetic field lines. Figure 1The magnetic field generating device 4 is only used to illustrate the relative position relationship with other structures, and is not used to limit the shape of the magnetic field generating device 4. The length and thickness of the dotted line do not limit the magnetic field strength. Based on the placement of the first magnetic member 3 in different embodiments, the direction of the dotted line may also be different.

[0111] The magnetic field generating device 4 is used to pass an alternating current to generate a magnetic field that changes direction and radiates outward from the magnetic poles. In different embodiments, the specific structure of the magnetic field generating device 4 may be different, as long as it can generate a magnetic field that radiates outward and can adjust the magnetic field strength and direction.

[0112] It should be noted that the magnetic field generating device 4 and the sealless induction cleaning mechanism may not be matched at the time of shipment, but may be additionally selected and debugged at a later stage, or may be matched at the time of shipment. In other words, the magnetic field generating device 4 may be additionally installed on the reaction tank 1, or may be set separately from the reaction tank 1 as an additional component, and act on the sealless induction cleaning mechanism inside the reaction tank 1 in the air. The magnetic pole of the first magnetic member 3 passes through a position opposite to the magnetic pole of the magnetic field generating device 4 in the working state. As an example, in an embodiment of the present application, the magnetic field generating device 4 is used to be installed at the bottom of the reaction tank 1 and one working magnetic pole of the magnetic field generating device 4 is facing the bottom of the reaction tank 1, and the other working magnetic pole is away from the bottom of the reaction tank 1. In other words, during the rotation of the first magnetic member 3, its motion trajectory will sweep over the top of the magnetic field generating device 4.

[0113] The seal-free induction cleaning device also includes a second magnetic member 5 arranged on the main body 21 and a magnetic field detection mechanism 6 for detecting the magnetic field strength of the magnetic field generated by the second magnetic member 5 at a preset position. The second magnetic member 5 is a material with strong magnetism, such as a permanent magnet. In this solution, the material and shape of the second magnetic member 5 are not limited, as long as it is difficult for it to be significantly demagnetized under long-term rotation. The second magnetic member 5 is used to provide a significant magnetic field for use as a substance to be detected. When the second magnetic member 5 rotates synchronously with the main body 21, the relative position of the second magnetic member 5 and the magnetic field detection mechanism 6 will change, and the magnetic field strength generated by the second magnetic member 5 at the magnetic field detection mechanism 6 will be different. The magnetic field detection mechanism 6 can judge the current position of the main body 21 based on the different magnetic fields detected.

[0114] The sealless induction cleaning device further includes a controller 7, which is used to receive magnetic field detection information output by the magnetic field detection mechanism 6 based on the detected magnetic field, and to control the magnitude and direction of the magnetic field generated by the magnetic field detection mechanism 6 based on the magnetic field detection information. The controller 7 obtains the current position of the main body 21 based on the magnetic field detection information, and controls the magnitude and direction of the magnetic field generated by the magnetic field detection mechanism 6 based on the position information, so that the first magnetic member 3 can always be continuously subjected to a force in the tangential direction of the rotation direction.

[0115] The implementation principle of a seal-free induction cleaning device for a reaction tank described in the embodiment of the present application is:

[0116] When the first magnetic member 3 receives the magnetic field generated by the magnetic field generating device 4, it will be subjected to thrust or pulling force, which can generate a component force in the circumferential direction of the reaction tank 1, so that the main body 21 of the scraper 2 connected to the first magnetic member 3 rotates in the circumferential direction of the reaction tank 1. The scraper blade 24 can continuously scrape on the inner wall of the reaction tank 1 to remove sediment. The controller 7 obtains the current position of the main body 21 based on the magnetic field detection information, and controls the magnetic field size and direction generated by the magnetic field detection mechanism 6 based on the position information, so as to control the first magnetic member 3 to be continuously subjected to the force in the same rotation direction. In this scheme, the method of driving the scraper 2 by means of an external magnetic field is adopted, which replaces the method of driving by an external motor, thereby avoiding the setting of a shaft seal for the external motor. On the one hand, the overall structure is simplified, which is convenient for production and installation. On the other hand, the device can assist in dust self-cleaning, greatly prolong the normal working time of the reaction chamber, improve the continuous operation rate of the production line, and reduce the loss of sudden downtime.

[0117] The embodiment of the present application also discloses a driving method for the sealless induction cleaning device as described above. Figure 5 FIG. 1 is a flow chart of the control method in a certain embodiment. It should be understood that although Figure 5-9 The steps in the flowchart are shown in sequence as indicated by the arrows, but the steps are not necessarily executed in the order indicated by the arrows; unless otherwise specified in this document, there is no strict order restriction for the execution of the steps, and the steps may be executed in other orders; and Figure 5-9 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0118] In addition, the numbers of the steps in this embodiment are only for convenience of explanation and do not limit the execution order of the steps. In practical applications, the execution order of the steps can be adjusted as needed, or performed simultaneously. These adjustments or replacements are all within the scope of protection of the present invention.

[0119] Reference Figure 5 The driving method at least comprises the following steps S1-S6:

[0120] S1. Control the scraper 2 to rotate at a preset initial rotation speed.

[0121] In different embodiments, the preset initial speed can be zero, or it can rotate at the preset initial speed as the initial speed after being triggered. When a certain amount of initial speed is given, the required starting current of the magnetic field generating device 4 can be effectively reduced, and it is also helpful to calculate the current value that needs to be changed by the current speed and the rate of change of the speed. It should be noted that there can be multiple triggering methods here, such as magnetic triggering and even manual triggering, and the preset initial speed may not be a fixed value, but any value within a certain threshold range, such as 0.1-0.5m / s.

[0122] S2. Obtaining magnetic field detection information corresponding to the second magnetic member 5.

[0123] The magnetic field detection mechanism 6 detects the magnetic field strength of the magnetic field emitted by the second magnetic member 5 at the magnetic field detection mechanism 6. Since the second magnetic member 5 rotates synchronously with the scraping member 2, and the point-divergent magnetic field strength is related to the distance, the magnetic field detection information is strongly correlated with the position of the second magnetic member 5.

[0124] S3. Compare the magnetic field detection information with the pre-stored comparison information to obtain the current position information of the scraper 2.

[0125] The pre-stored reference information is information obtained by summarizing the magnetic field generated by the second magnetic member 5 at different positions after the magnetic field detection device is installed. For example, after the magnetic field detection device is installed, that is, after the magnetic field installation device is fixed to the reaction tank 1, the scraper 2 is rotated successively in steps of 0.1°, and the magnetic field strength detected after each rotation is detected. The 3600 detected data are summarized as pre-stored reference information, and the corresponding relationship between each magnetic field strength and the position or posture of the scraper 2 can be obtained. By comparing the detected magnetic field detection information with the pre-stored reference information, the current position or current posture of the scraper 2 can be obtained.

[0126] As an example, refer to Figure 6 , S3 may include the following sub-steps:

[0127] S31. Obtain the magnetic field detection information at each moment within a preset time period before the current moment and use it as an information sequence.

[0128] S32. Based on the information sequence, the information is compared with the pre-stored comparison information to obtain the current position information of the scraper 2.

[0129] Since when there are multiple second magnetic parts 5, different second magnetic parts 5 will have superimposed magnetic fields at the same position, there may be multiple points with the same magnetic field strength. For example, when the two main bodies 21 are symmetrically arranged relative to the axis of the reaction tank 1, and the second magnetic parts 5 are both located in the middle of the main body 21, the magnetic fields generated by the two second magnetic parts 5 are symmetrically distributed and have the same magnetic field strength. However, since the rotation direction is fixed, the trend of the magnetic field change is different. Of course, in order to avoid the same second magnetic part 5 from producing a symmetrical magnetic field, the magnetism of different second magnetic parts 5 can be set to be different. By collecting and comparing the magnetic field detection information at consecutive moments, the current position of the second magnetic part 5 can be judged more accurately.

[0130] Optionally, at any time in this solution, this step can be performed: obtaining input information, and adjusting the preset speed information based on the input information. Due to different types of reactants, the required speed of the scraper 2 is also different. Therefore, in this solution, the current speed is adjusted based on the preset speed information as the target speed. Since deposition is not generated at a constant rate during the reaction process, it is necessary to adjust the magnetic field driving force and the operating speed of the scraper 2 at all times to avoid insufficient or excessive cleaning force.

[0131] S4. Control the direction of the magnetic field generated by the magnetic field generating device 4 based on the current position information of the scraper 2.

[0132] When the scraper 2 is in different positions, the magnetic field generating device 4 is required to generate thrust or pull accordingly, so that the scraper 2 rotates in only one direction. Figure 7 , S4 may include the following sub-steps:

[0133] S41. Acquire the current positions of the first area and the second area based on the current position information of the scraper 2, wherein the first area and the second area are respectively the front and rear side areas of the first magnetic member 3 in a preset rotation direction.

[0134] S42. Based on the relative positional relationship between the magnetic field generating device 4 and the first region and the second region, adjust the direction of the magnetic field generated by the magnetic field generating device 4.

[0135] Specifically, refer to Figure 8 , S42 may include the following steps:

[0136] S421. Determine whether the magnetic field generating device 4 is located in the first region, and if so, adjust the magnetic field generating device 4 to generate a magnetic field that repels the magnetic pole of the first magnetic member 3 close to the magnetic field generating device 4;

[0137] S422. Determine whether the magnetic field generating device 4 is located in the second area. If so, adjust the magnetic field generating device 4 to generate a magnetic field that attracts the magnetic pole of the first magnetic component 3 close to the magnetic field generating device 4; wherein the first area and the second area corresponding to the same first magnetic component 3 are arranged in sequence along the preset rotation direction.

[0138] When the first magnetic member 3 is located on the first area, it is subjected to the magnetic field pulling force generated by the magnetic field generating device 4. When the first magnetic member 3 enters the second area, the direction of the magnetic field changes, and the first magnetic member 3 is subjected to the thrust generated by the magnetic field. In summary, by adjusting the direction of the magnetic field based on the positional relationship between the first magnetic member 3 on the first area and the second area, the first magnetic member 3 can be continuously subjected to force in the tangential direction along the rotation direction.

[0139] S5. Compare the magnetic field detection information with the pre-stored comparison information to obtain the current rotation speed information of the scraper 2.

[0140] Due to the different types of reactants, the required speed of the scraper 2 is also different. Therefore, in this solution, the current speed is adjusted based on the preset speed information as the target speed. Since the deposition is not generated at a constant rate during the reaction process, it is necessary to constantly adjust the magnetic field driving force and the running speed of the scraper 2 to avoid insufficient or excessive cleaning force.

[0141] Specifically, refer to Fig. 9 , S5 may include the following steps:

[0142] S51. Obtaining magnetic field detection information at each moment within a preset time period before the current moment as an information sequence;

[0143] S52. Based on the information sequence and the pre-stored control information, the current position information of the scraper 2 is obtained;

[0144] S53. Based on the current position information of the scraper 2 and the position information of the scraper 2 at the last moment, calculate the current rotation speed information.

[0145] Since the data acquisition step is determined, the current speed information can be easily obtained according to the position change. Continuing with the above example, after the magnetic field installation device is fixed to the reaction tank 1, the scraper 2 is rotated in steps of 0.1°, and the magnetic field strength detected after each rotation is detected. Therefore, at adjacent detection times, the current scraper 2 position information and the scraper 2 position information at the previous moment can be determined by the magnetic field strength, thereby calculating the current speed information.

[0146] S6. Control the magnetic field intensity generated by the magnetic field generating device 4 based on the current rotation speed information and the preset rotation speed information of the scraper 2.

[0147] Reducing the average working current value of the magnetic field generating device 4 can reduce the magnetic field force, and increasing the average working current value of the magnetic field generating device 4 can increase the magnetic field force, thereby adjusting the rotation speed of the scraper 2.

[0148] Specifically, S6 may include the following steps:

[0149] S61. Determine whether the current rotation speed is greater than the preset rotation speed. If so, reduce the average operating current value of the magnetic field generating device 4; if not, increase the average operating current value of the magnetic field generating device 4.

[0150] The present application also discloses an electronic device, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executes the above-mentioned driving method. The execution subject of the method of this embodiment can be a control device, which is arranged on the electronic device. The current device can be a mobile phone with WIFI function, a tablet computer, a laptop computer and other electronic devices. The execution subject of the method of this embodiment can also be directly the CPU (central processing unit) of the electronic device.

[0151] The present application embodiment also discloses a computer-readable storage medium, which stores a computer program that can be loaded by a processor and execute the above driving method. Through the description of the above implementation mode, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware, but in many cases the former is a better implementation mode. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM / RAM, disk, CD) as above, including a number of instructions to enable a device (which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to execute the method of each embodiment of the present application.

[0152] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A seal-free induction cleaning device for a reaction tank, characterized in that: It comprises a shaft seal-free induction cleaning mechanism, a magnetic field generating device (4) and a magnetic field detecting mechanism (6); The sealless induction cleaning mechanism comprises a scraper (2), the scraper (2) comprising a main body (21), a connecting part (22) and a mounting part (23), the main body (21) being provided with a scraping blade (24), the main body (21) being provided on a side wall of a reaction tank (1) and being rotatably connected to the reaction tank (1) via the connecting part (22), the mounting part (23) being provided on the main body (21) and being provided with a first magnetic part (3) for receiving an external magnetic field so as to be subjected to a component force in the circumferential direction of the reaction tank (1); the main body (21) being provided with a second magnetic part (5); the magnetic field detection mechanism (6) being used to detect the magnetic field strength of a magnetic field generated by the second magnetic part (5) at a preset position; The driving method of the sealless induction cleaning device comprises the following steps: Controlling the scraper (2) to rotate at a preset initial rotation speed; Acquiring magnetic field detection information corresponding to the second magnetic member (5); Comparing the magnetic field detection information with the pre-stored comparison information to obtain the current position information of the scraper (2); Controlling the direction of the magnetic field generated by the magnetic field generating device (4) based on current position information of the scraper (2); The magnetic field generating device (4) is used to generate a magnetic field that causes a magnetic effect on the first magnetic member (3) so that the first magnetic member (3) is subjected to a component force in the circumferential direction of the reaction tank (1).

2. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The main body (21) extends axially on the inner wall of the reaction tank (1).

3. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The number of the main body parts (21) is one or more, and the main body parts (21) are all connected to the connecting part (22).

4. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The connecting portion (22) is in a ring shape that matches the inner wall of the reaction tank (1).

5. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The connecting portion (22) is connected to the inner wall of the reaction tank (1) via a bearing.

6. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The mounting portion (23) is arranged to extend along the axial direction of the reaction tank (1).

7. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The mounting portion (23) is arranged to extend in the radial direction of the reaction tank (1).

8. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The mounting portion (23) is provided with a scraping blade (24).

9. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The first magnetic component (3) is one and is mounted on a mounting portion (23) on a main body portion (21).

10. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The number of the first magnetic parts (3) is equal to the number of the main body parts (21), and the first magnetic parts (3) correspond one by one to one of the main body parts (21).

11. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The number of the first magnetic parts (3) is plural and is less than the number of the main body parts (21), and the first magnetic parts (3) correspond one by one to one of the main body parts (21).

12. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The main body (21) is rod-shaped, the scraping blade (24) is arranged on the side of the main body (21) and extends along the axial direction of the main body (21), and the scraping blade (24) is used to abut against the reaction tank (1).

13. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The middle portion of the connecting portion (22) is used to communicate with the liquid inlet (11) of the reaction tank (1).

14. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: One end of each connecting portion (22) away from the main body portion (21) cooperates to form a notch that is connected to the liquid outlet (12) of the reaction tank (1).

15. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: One end of each connecting portion (22) away from the main body portion (21) is connected to each other to form an annular portion (25), and both ends of the internal channel of the annular portion (25) are respectively connected to the liquid outlet (12) of the reaction tank (1) and the inner cavity of the reaction tank (1).

16. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The magnetic field generating device (4) is used to pass an alternating current to generate a magnetic field with a changing direction that radiates outward from a magnetic pole, and the magnetic pole of the first magnetic member (3) passes through a position opposite to the magnetic pole of the magnetic field generating device (4) in a working state.

17. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The driving method further comprises the following steps: Comparing the magnetic field detection information with the pre-stored comparison information to obtain the current rotation speed information of the scraper (2); The intensity of the magnetic field generated by the magnetic field generating device (4) is controlled based on the current rotation speed information and the preset rotation speed information of the scraper (2).

18. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The driving method further comprises the following steps: Input information is obtained, and preset speed information is adjusted based on the input information.

19. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The step of comparing the magnetic field detection information with the pre-stored comparison information to obtain the current position information of the scraper (2) comprises: Obtaining magnetic field detection information at each moment within a preset time period before the current moment and using it as an information sequence; Based on the comparison between the information sequence and the pre-stored comparison information, the current position information of the scraper (2) is obtained.

20. The seal-free induction cleaning device for a reaction tank according to claim 17, characterized in that: The step of comparing the magnetic field detection information with the pre-stored comparison information to obtain the current rotation speed information of the scraper (2) comprises: Obtaining magnetic field detection information at each moment within a preset time period before the current moment and using it as an information sequence; Based on the comparison of the information sequence with the pre-stored comparison information, current position information of the scraper (2) is obtained; Based on the current position information of the scraper (2) and the position information of the scraper (2) at the last moment, the current rotation speed information is calculated.

21. The seal-free induction cleaning device for a reaction tank according to claim 1, characterized in that: The step of controlling the direction of the magnetic field generated by the magnetic field generating device (4) based on the current position information of the scraper (2) comprises: Based on the current position information of the scraping member (2), the current positions of the first area and the second area are acquired, wherein the first area and the second area are respectively the front and rear areas of the first magnetic member (3) in a preset rotation direction; Based on the relative positional relationship between the magnetic field generating device (4) and the first region and the second region, the direction of the magnetic field generated by the magnetic field generating device (4) is adjusted.

22. The seal-free induction cleaning device for a reaction tank according to claim 17, characterized in that: The step of controlling the magnetic field strength generated by the magnetic field generating device (4) based on the current rotation speed information and the preset rotation speed information of the scraper (2) comprises: It is determined whether the current rotation speed is greater than a preset rotation speed; if so, the average operating current value of the magnetic field generating device (4) is reduced; if not, the average operating current value of the magnetic field generating device (4) is increased.

23. The seal-free induction cleaning device for a reaction tank according to claim 17, characterized in that: The step of adjusting the direction of the magnetic field generated by the magnetic field generating device (4) based on the relative positional relationship between the magnetic field generating device (4) and the first area and the second area comprises: determining whether the magnetic field generating device (4) is located in the first area, and if so, adjusting the magnetic field generating device (4) to generate a magnetic field that repels the magnetic pole of the first magnetic member (3) close to the magnetic field generating device (4); determining whether the magnetic field generating device (4) is located in the second area, and if so, adjusting the magnetic field generating device (4) to generate a magnetic field that attracts the magnetic pole of the first magnetic member (3) close to the magnetic field generating device (4); Wherein, the first area and the second area corresponding to the same first magnetic member (3) are arranged in sequence along a preset rotation direction.

Images