A device suitable for secondary dust removal ducts in the production line of the new energy negative electrode industry

Abstract

The present invention provides a device suitable for secondary dust removal ducts in production lines for new energy cathodes. The device comprises a base plate with a through hole and a flap on one side of the base plate for opening and closing the through hole. The device can be used to remove dust from solid particles or media with high viscosity, and prevents backflow caused by blade jamming.

Description

Technical Field

[0001] The present invention relates to the field of new energy production technology, and in particular to a device suitable for secondary dust removal ducts in production lines of new energy negative electrode industries. Background Art

[0002] Secondary dust removal duct equipment is a device used to prevent dust backflow in secondary dust removal ducts. It is mainly used for secondary dust removal of powders and is widely used in the new energy negative electrode industry.

[0003] Currently, traditional equipment on the market to prevent dust backflow in air ducts mostly adopts a multi-blade linkage design, which is mostly suitable for clean media and not suitable for media with solid particles or high viscosity. During use, a single blade is prone to jamming, causing powder to backflow into the equipment. Therefore, there is a lack of secondary dust removal air duct equipment that can be used for dust removal with solid particles or high viscosity media and prevent backflow. Summary of the Invention

[0004] The present invention provides a device suitable for secondary dust removal ducts in production lines of new energy negative electrode industries, which can be used to remove dust from solid particles or media with high viscosity, and prevent backflow caused by blade jamming.

[0005] The present invention provides a device suitable for secondary dust removal air ducts in production lines of new energy negative electrode industries, comprising: a base plate, wherein a through hole is provided on the base plate, and a flap is provided on one side of the base plate, wherein the flap is used to open or close the through hole, and the base plate is installed on a pipe or equipment used for dust removal.

[0006] Preferably, the bottom plate is a circular structure, the flap and the through hole are both square structures, and the inner diameter of the through hole is smaller than the outer diameter of the flap.

[0007] Preferably, the flap is connected to the surface of the base plate via a hinge, and the hinge is fixed to the upper surface of the base plate via rivets.

[0008] Preferably, a pad is provided between the hinge and the base plate, and a sealing gasket is further provided on the upper surface of the base plate. The sealing gasket and the pad are relatively arranged on the outside of the through hole.

[0009] Preferably, the base plate is evenly distributed with a plurality of assembly holes, each of which is used to install the base plate at a working position, and the working position includes but is not limited to the air outlet of any one of the working equipment including a Roots blower, a front end of a blower silencer, and an air duct.

[0010] Preferably, the flap (5) and the sealing gasket (6) can prevent dust in the air duct from flowing back into the equipment by gravity;

[0011] When there is wind at the air outlet, the flap opens under the action of the airflow; when there is no wind at the air outlet, the flap closes automatically under the action of gravity; when the powder flows back under the influence of the fluid, the fluid pressure acts on the flap, closing it and pressing it tightly. The fluid pressure can enhance the seal and prevent the powder from flowing back.

[0012] Preferably, a stepper motor is installed at one end of the hinge shaft and an encoder is installed at the other end. The stepper motor can drive the hinge shaft to open and close the flap. When the hinge is working normally, the stepper motor is not powered. At this time, the stepper motor does not affect the automatic opening and closing state of the hinge. The hinge needs to be self-checked after a preset working time. First, the air outlet is closed so that the flap closes automatically under the action of gravity. Then the power of the stepper motor is turned on, and the stepper motor is controlled to rotate at a fixed speed to the maximum opening angle of the hinge. During the rotation, the input pulse of the stepper motor and the output pulse of the encoder are checked in real time to see if they meet the input and output requirements, so as to know whether the current hinge is stuck. If the hinge is stuck, the intelligent lubricating oil nozzle installed around the hinge will spray corresponding lubricating oil at the hinge shaft part to achieve the lubrication effect.

[0013] Preferably, if the hinge is stuck, the intelligent lubricating oil nozzle installed around the hinge will spray the corresponding lubricating oil towards the hinge shaft, and the method further includes the following specific steps:

[0014] Step A1: If the hinge enters the self-test state, whether the hinge is stuck is determined according to the input pulse of the stepping motor and the output pulse of the encoder during the rotation process;

[0015] Step A2: If the hinge jams, the volume of the lubricating oil intelligent nozzle sprayed is controlled based on the deviation between the input pulse of the stepper motor and the output pulse of the encoder; at the same time, the lubricating oil intelligent nozzles installed around the hinge are controlled to align with the hinge shaft to spray a volume G of lubricating oil;

[0016] Step A3: controlling the interval of the next self-check according to the historical number of injections of the hinge and the injection volume of each injection, and determining whether the hinge needs to be replaced.

[0017] Preferably, it also includes:

[0018] In step A1, formula (1) is used to calculate or determine whether the hinge is stuck:

[0019] E(t)=F{|N(t0→t)×θ0-M(t0→t)×α0|≥θ0},θ0≥α0 (1)

[0020] Wherein, E(t) represents the judgment value of whether the hinge is stuck at time t; θ0 represents the rotation subdivision of the stepper motor, that is, the angle value rotated by inputting one pulse to the stepper motor; α0 represents the acquisition subdivision of the encoder, that is, it outputs a pulse when it collects one rotation of α0 angle; t0 represents the power-on time of the stepper motor; N(t0→t) represents the number of pulses input to the stepper motor from t0 to time t; M(t0→t) represents the number of pulses output by the encoder from t0 to time t; || represents the absolute value; F{} represents the judgment function, and the function value is 1 if the formula in the brackets is true, and the function value is 0 if the formula in the brackets is false.

[0021] If E(t)=1, it means that the hinge is stuck at time t;

[0022] If E(t)=0, it means that the hinge does not freeze at time t;

[0023] If from t0 to t e If the hinge does not jam, the self-test is complete and the machine can continue to work.

[0024] If from t0 to t e If the hinge becomes stuck, proceed to step A2 to spray lubricant.

[0025] where t e Indicates the moment when the stepper motor drives the hinge to rotate to the maximum opening angle of the hinge;

[0026] In step A2, the lubricating oil injection amount of the hinge shaft that is stuck is controlled using formula (2):

[0027]

[0028] Where G represents the injection volume of the lubricating oil intelligent nozzle; G0 represents the minimum injection volume preset by the lubricating oil intelligent nozzle; G e represents the maximum injection volume preset by the lubricating oil intelligent nozzle; D(t0→t e ) represents the time from t0 to t e The total number of freezes detected at any given moment; From t0 to t e The maximum deviation between the motor rotation angle and the encoder acquisition angle during all the jams at the moment;

[0029] The intelligent lubricating oil nozzle installed around the hinge will spray G volume of lubricating oil towards the hinge shaft;

[0030] In step A3, the self-test interval is calculated using formula (3), and it is determined whether the hinge needs to be replaced:

[0031]

[0032] Wherein, T(i+1) represents the interval time of the next self-test, i.e., the i+1th self-test; T(i) represents the interval time of the i-th self-test; R represents the total number of injections on the hinge in history; G(i) represents the injection volume of the i-th injection on the hinge in history; Indicates that the value of i from 1 to R is substituted into the brackets to obtain the maximum value in the brackets; e represents a natural constant; T0 represents the preset first self-test interval time;

[0033] The time of the next self-check is controlled to be T(i+1) time later, and if T(i+1)<20%×T0, it is necessary to control the replacement of the hinge.

[0034] The working principle and beneficial effects of the present invention are as follows:

[0035] The present invention provides a device suitable for secondary dust removal ducts in production lines for new energy cathodes. The device comprises a base plate with a through hole and a flap on one side of the base plate for opening and closing the through hole. The device can be used to remove dust from solid particles or media with high viscosity, and prevents backflow caused by blade jamming.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The linkage part adopts hinges. When particles or sticky media pass through, it will not cause jamming during long-term operation.

[0038] 2. The compression of the flap mainly depends on the gravity of the flap itself

[0039] 3. A sealing strip is installed on the bottom plate, which can better seal the door when the flap is closed.

[0040] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0041] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0043] In the attached figure:

[0044] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0045] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0046] Among them, 1-hinge, 2-pad, 3-base plate, 4-rivet, 5-flap, 6-sealing gasket, 7-assembly hole. DETAILED DESCRIPTION

[0047] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0048] according to Figure 1-2 As shown, an embodiment of the present invention provides a device suitable for secondary dust removal air ducts in the production line of the new energy negative electrode industry, characterized in that it includes: a base plate, a through hole is provided on the base plate, and a flap is provided on one side of the base plate, and the flap is used to open or close the through hole, and the base plate is installed on a pipe or equipment for dust removal.

[0049] To achieve the above object, the present invention provides the following technical solutions:

[0050] 1. The blade adopts a single flap design. When the fan is turned on, the flap opens under the action of airflow. When the fan is turned off, the flap automatically closes under the action of gravity. When the powder flows back under the influence of the fluid, the fluid pressure acts on the flap to close and press the flap tightly. The fluid pressure can enhance the seal and prevent the powder from flowing back.

[0051] 2. The rotation of the flap is connected by a hinge, so when particles or media with high viscosity pass through, it will not cause jamming.

[0052] 3. The linkage part of the entire equipment is made of standard hinges, which are easy to purchase and installed with rivets, making it simple to make.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] 1. The linkage part adopts hinges. When particles or sticky media pass through, it will not cause jamming during long-term operation.

[0055] 2. The compression of the flap mainly depends on the gravity of the flap itself

[0056] 3. A sealing strip is installed on the bottom plate, which can better seal the door when the flap is closed.

[0057] Further preferably, the bottom plate is a circular structure, the flap and the through hole are both square structures, and the inner diameter of the through hole is smaller than the outer diameter of the flap.

[0058] The flap is connected to the surface of the base plate via a hinge, and the hinge is fixed to the upper surface of the base plate via rivets.

[0059] A cushion block is provided between the hinge and the bottom plate, and a sealing gasket is further provided on the upper surface of the bottom plate. The sealing gasket and the cushion block are arranged relative to each other on the outside of the through hole.

[0060] The base plate is evenly distributed with a plurality of assembly holes, each of which is used to install the base plate on a working position, and the working position includes but is not limited to the air outlet of any one of the working equipment including a Roots blower, the front end of a blower muffler, and an air duct.

[0061] The flap and the sealing gasket can prevent dust in the air duct from flowing back into the equipment through gravity;

[0062] When there is wind at the air outlet, the flap opens under the action of the airflow; when there is no wind at the air outlet, the flap closes automatically under the action of gravity; when the powder flows back under the influence of the fluid, the fluid pressure acts on the flap, closing it and pressing it tightly. The fluid pressure can enhance the seal and prevent the powder from flowing back.

[0063] The method of use of the present invention is as follows:

[0064] After the equipment is assembled, when installing the secondary dust removal duct, install the equipment on the front end of the Roots blower or large equipment fan muffler or on the duct;

[0065] During installation, pay attention to the direction in which the flap needs to be opened, which should be in the direction of normal fluid flow, to ensure that when the fan is turned on, the flap can be automatically opened under the drive of the fluid.

[0066] The working principle of the present invention is as follows: when the fan is turned on, the flap opens under the action of the airflow; when the fan is turned off, the flap automatically closes under the action of gravity; when the powder flows back under the drive of the fluid, the fluid pressure acts on the flap, causing the flap to close and press the flap tightly. The fluid pressure can enhance the seal and prevent the powder from flowing back.

[0067] In one embodiment, a stepper motor is installed at one end of the hinge shaft and an encoder is installed at the other end. The stepper motor can drive the hinge shaft to open and close the flap. When the hinge is working normally, the stepper motor is not powered. At this time, the stepper motor does not affect the automatic opening and closing state of the hinge. The hinge needs to be self-checked after a preset working time. First, the air outlet is closed so that the flap is automatically closed under the action of gravity. Then the power of the stepper motor is turned on, and the stepper motor is controlled to rotate at a fixed speed to the maximum opening angle of the hinge. During the rotation, the input pulse of the stepper motor and the output pulse of the encoder are checked in real time to see if they meet the input and output requirements, so as to know whether the hinge is currently stuck. If the hinge is stuck, the intelligent lubricating oil nozzle installed around the hinge will spray corresponding lubricating oil at the hinge shaft to achieve the lubrication effect. The specific steps include:

[0068] Step A1: If the hinge enters the self-test state, use formula (1) to determine whether the hinge is stuck according to the input pulse of the stepper motor and the output pulse of the encoder during the rotation process.

[0069] E(t)=F{|N(t0→t)×θ0-M(t0→t)×α0|≥θ0},θ0≥α0 (1)

[0070] Wherein, E(t) represents the judgment value of whether the hinge is stuck at time t; θ0 represents the rotation subdivision of the stepper motor, that is, the angle value rotated by inputting one pulse to the stepper motor; α0 represents the acquisition subdivision of the encoder, that is, it outputs a pulse when it collects one rotation of α0 angle; t0 represents the power-on time of the stepper motor; N(t0→t) represents the number of pulses input to the stepper motor from t0 to time t; M(t0→t) represents the number of pulses output by the encoder from t0 to time t; || represents the absolute value; F{} represents the judgment function, and the function value is 1 if the formula in the brackets is true, and the function value is 0 if the formula in the brackets is false.

[0071] If E(t)=1, it means that the hinge is stuck at time t;

[0072] If E(t)=0, it means that the hinge does not freeze at time t;

[0073] If from t0 to t e If the hinge does not jam, the self-test is complete and the machine can continue to work.

[0074] If from t0 to t e If the hinge becomes stuck, proceed to step A2 to spray lubricant.

[0075] where te Indicates the moment when the stepper motor drives the hinge to rotate to the maximum opening angle of the hinge;

[0076] Step A2: If the hinge is stuck, use formula (2) to control the injection volume of the lubricating oil intelligent nozzle according to the deviation state of the input pulse of the stepper motor and the output pulse of the encoder.

[0077]

[0078] Where G represents the injection volume of the lubricating oil intelligent nozzle; G0 represents the minimum injection volume preset by the lubricating oil intelligent nozzle; G e represents the maximum injection volume preset by the lubricating oil intelligent nozzle; D(t0→t e ) represents the time from t0 to t e The total number of freezes detected at any given moment; From t0 to t e The maximum deviation between the motor rotation angle and the encoder acquisition angle during all the jams at the moment;

[0079] The intelligent lubricating oil nozzle installed around the hinge will spray G volume of lubricating oil towards the hinge shaft;

[0080] Step A3: Use formula (3) to control the interval time of the next self-check according to the historical number of injections of the hinge and the injection volume of each injection, and to determine whether the hinge needs to be replaced.

[0081]

[0082] Wherein, T(i+1) represents the interval time of the next self-test, i.e., the i+1th self-test; T(i) represents the interval time of the i-th self-test; R represents the total number of injections on the hinge in history; G(i) represents the injection volume of the i-th injection on the hinge in history; Indicates that the value of i from 1 to R is substituted into the brackets to obtain the maximum value in the brackets; e represents a natural constant; T0 represents the preset first self-test interval time;

[0083] Control the time of the next self-test to be T(i+1) time later, and if T(i+1)<20%×T0, it is necessary to control the replacement of the hinge;

[0084] The beneficial effects of the above technical solution are: using the formula (1) of step A1 to judge whether the hinge has a stuck phenomenon according to the input pulse of the stepping motor and the output pulse of the encoder during the rotation, thereby knowing the current quality state of the hinge, which is convenient for subsequent spraying of lubricating oil; then using the formula (2) of step A2 to control the injection volume of the lubricating oil intelligent nozzle according to the deviation state of the input pulse of the stepping motor and the output pulse of the encoder, thereby intelligently spraying the corresponding lubricating oil to avoid waste while ensuring the lubrication effect on the hinge; then using the formula (3) of step A3 to control the interval time of the next self-check according to the historical number of injections of the hinge and the injection volume of each time, and judge whether the hinge needs to be replaced, thereby gradually shortening the self-check interval during the continuous lubrication of the hinge, ensuring the reliability of the hinge, and replacing the hinge in time after multiple sprayings of the hinge to ensure the overall safety and reliability of the device.

[0085] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A device suitable for secondary dust removal ducts in the production line of new energy negative electrode industry, characterized in that: include: A bottom plate, wherein the bottom plate is provided with a through hole, one side of the bottom plate is provided with a flap, the flap is used to open or close the through hole, and the bottom plate is installed on a pipe or equipment used for dust removal; Wherein, the flap is connected to the surface of the base plate via a hinge, and the hinge is fixed to the upper surface of the base plate via rivets; Wherein, a stepper motor is installed at one end of the rotating shaft of the hinge, and an encoder is installed at the other end. The stepper motor can drive the rotating shaft of the hinge to open and close the flap. When the hinge is working normally, the stepper motor is not powered. At this time, the stepper motor does not affect the automatic opening and closing state of the hinge. The hinge is self-checked after a preset working time of the hinge. First, the air outlet is closed, so that the flap is automatically closed under the action of gravity. Then the power of the stepper motor is turned on, and the stepper motor is controlled to rotate at a fixed speed to the maximum opening angle of the hinge. During the rotation process, the input pulse of the stepper motor and the output pulse of the encoder are checked in real time to see if they meet the input and output requirements, so as to know whether the current hinge has a jamming phenomenon. If the hinge has a jamming phenomenon, the intelligent lubricating oil nozzle installed around the hinge will spray corresponding lubricating oil at the rotating shaft part of the hinge to achieve a lubricating effect. If the hinge is stuck, the intelligent lubricating oil nozzle installed around the hinge will spray the corresponding lubricating oil towards the hinge shaft, and the following specific steps are also included: Step A1: If the hinge enters the self-test state, whether the hinge is stuck is determined according to the input pulse of the stepping motor and the output pulse of the encoder during the rotation process; Step A2: If the hinge jams, the volume of the lubricating oil intelligent nozzle sprayed is controlled based on the deviation between the input pulse of the stepper motor and the output pulse of the encoder; at the same time, the lubricating oil intelligent nozzles installed around the hinge are controlled to align with the hinge shaft to spray a volume G of lubricating oil; Step A3: controlling the interval of the next self-check according to the historical number of injections of the hinge and the injection volume of each injection, and determining whether the hinge needs to be replaced.

2. The device according to claim 1, which is suitable for secondary dust removal ducts in the production line of the new energy negative electrode industry, is characterized in that: The bottom plate is a circular structure, the flap and the through hole are both square structures, and the inner diameter of the through hole is smaller than the outer diameter of the flap.

3. The device for secondary dust removal ducts in the production line of the new energy negative electrode industry according to claim 1 is characterized in that: A cushion block is provided between the hinge and the bottom plate, and a sealing gasket is further provided on the upper surface of the bottom plate. The sealing gasket and the cushion block are arranged relative to each other on the outside of the through hole.

4. The device for secondary dust removal ducts in the production line of the new energy negative electrode industry according to claim 1, characterized in that: The base plate is evenly distributed with a plurality of assembly holes, each of which is used to install the base plate on a working position, and the working position includes an air outlet of any one of the working equipment including a Roots blower, a front end of a blower muffler, and an air duct.

5. The device for secondary dust removal ducts in the production line of the new energy negative electrode industry as claimed in claim 3 is characterized in that: The flap and the sealing gasket can prevent dust in the air duct from flowing back into the equipment through gravity; When there is wind at the air outlet, the flap opens under the action of the airflow; when there is no wind at the air outlet, the flap closes automatically under the action of gravity; when the powder flows back under the influence of the fluid, the fluid pressure acts on the flap, closing it and pressing it tightly. The fluid pressure can enhance the seal and prevent the powder from flowing back.

6. The device for secondary dust removal ducts in the production line of the new energy negative electrode industry according to claim 1, characterized in that: Also includes: In step A1, formula (1) is used to calculate or determine whether the hinge is stuck: E(t)=F{|N(t0→t)×θ0-M(t0→t)×α0|≥θ0},θ0≥α0(1) Wherein, E(t) represents the judgment value of whether the hinge is stuck at time t; θ0 represents the rotation subdivision of the stepper motor, that is, the angle value rotated by inputting one pulse to the stepper motor; α0 represents the acquisition subdivision of the encoder, that is, it outputs a pulse when it collects one rotation of α0 angle; t0 represents the power-on time of the stepper motor; N(t0→t) represents the number of pulses input to the stepper motor from t0 to time t; M(t0→t) represents the number of pulses output by the encoder from t0 to time t; || represents the absolute value; F{} represents the judgment function, and the function value is 1 if the formula in the brackets is true, and the function value is 0 if the formula in the brackets is false. If E(t)=1, it means that the hinge is stuck at time t; If E(t)=0, it means that the hinge does not freeze at time t; If from t0 to t e If the hinge does not jam, the self-test is complete and the machine can continue to work. If from t0 to t e If the hinge becomes stuck, proceed to step A2 to spray lubricant. where t e Indicates the moment when the stepper motor drives the hinge to rotate to the maximum opening angle of the hinge; In step A2, the lubricating oil injection amount of the hinge shaft that is stuck is controlled using formula (2): Where G represents the injection volume of the lubricating oil intelligent nozzle; G0 represents the minimum injection volume preset by the lubricating oil intelligent nozzle; G e represents the maximum injection volume preset by the lubricating oil intelligent nozzle; D(t0→t e ) represents the time from t0 to t e The total number of freezes detected at any given moment; From t0 to t e The maximum deviation between the motor rotation angle and the encoder acquisition angle during all the jams at the moment; The intelligent lubricating oil nozzle installed around the hinge will spray G volume of lubricating oil towards the hinge shaft; In step A3, the self-test interval is calculated using formula (3), and it is determined whether the hinge needs to be replaced: Wherein, T(i+1) represents the interval time of the next self-test, i.e., the i+1th self-test; T(i) represents the interval time of the i-th self-test; R represents the total number of injections on the hinge in history; G(i) represents the injection volume of the i-th injection on the hinge in history; Indicates that the value of i from 1 to R is substituted into the brackets to obtain the maximum value in the brackets; e represents a natural constant; T0 represents the preset first self-test interval time; The time of the next self-check is controlled to be T(i+1) time later, and if T(i+1)<20%×T0, it is necessary to control the replacement of the hinge.

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