Ball milling cover for pulping and ball milling tank for pulping

Abstract

The utility model provides a ball-milling cover for pulping and a ball-milling tank for pulping. The ball-milling cover for pulping comprises a ball-milling cover protective sleeve and a deflation anti-blocking ball-milling cover. Through the deflation anti-blocking ball milling cover comprising the anti-blocking device, the device can shield the deflation hole in the ball milling process, high-viscosity slurry is prevented from blocking the deflation hole, the problem that a deflation valve of a traditional ball milling tank is prone to being blocked is solved, and it is guaranteed that deflation can be smoothly conducted after ball milling is finished. The upper layer of the ball milling cover protective sleeve is a solid layer, and the solid layer can provide enough rigidity and supporting force and disperse pressure. The lower layer of the ball milling cover protection sleeve is a hollow layer, the hollow layer is used for containing the deflation anti-blocking ball milling cover, and the weight of the whole structure can be reduced through the hollow layer.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ball milling equipment, in particular to a ball mill cover for pulp preparation and a ball mill tank for pulp preparation. BACKGROUND

[0002] When preparing a catalytic layer slurry for a fuel cell or a water electrolysis cell, a worker adds the required catalytic layer slurry into a ball mill tank, fixes the ball mill tank on a ball mill through a locking device, sets the ball milling speed and the ball milling time, and then starts the ball milling. After the ball milling is completed, the worker removes the locking device to complete the ball milling process. The ball milling process for preparing the slurry requires a high speed and a long time, so the pressure in the tank is high when the ball milling is completed. During the process of removing the locking device, that is, the process of releasing the pressure in the tank. The worker cannot accurately control the amount of pressure released in the tank by manually releasing the pressure, and the pressure in the tank is released from the gap between the ball mill cover and the ball mill tank, so the slurry in the tank will be sprayed out of the ball mill tank through the ball mill cover. Since the slurry is high in cost, the spilled slurry will cause huge economic losses.

[0003] The existing ball mill tank with a pressure release valve is prone to being blocked by the high-viscosity slurry during the ball milling process, so that the pressure release valve cannot be opened to release the pressure after the ball milling is completed. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a ball mill cover for pulp preparation and a ball mill tank for pulp preparation to solve the problem that the ball mill tank with a pressure release valve is prone to being blocked by the high-viscosity slurry during the ball milling process, so that the pressure release valve cannot be opened to release the pressure after the ball milling is completed.

[0005] The application provides a ball mill cover for pulp preparation, which comprises a ball mill cover protective sleeve and a pressure release anti-blocking ball mill cover.

[0006] The ball mill cover protective sleeve comprises a hollow layer and a solid layer, and the hollow layer is used for accommodating the pressure release anti-blocking ball mill cover.

[0007] The pressure release anti-blocking ball mill cover comprises a blocking prevention device, and a pressure release hole is arranged on the pressure release anti-blocking ball mill cover. The blocking prevention device is used for exposing the pressure release hole by moving the blocking prevention device during the pressure release process, and the blocking prevention device is used for shielding the pressure release hole by moving the blocking prevention device during the ball milling process.

[0008] In the above technical solution, the pressure release anti-blocking ball mill cover comprises the blocking prevention device, the device can shield the pressure release hole during the ball milling process, and the high-viscosity slurry cannot block the pressure release hole, which solves the problem that the pressure release valve of the traditional ball mill tank is prone to being blocked, and ensures that the pressure can be smoothly released after the ball milling is completed. The upper layer of the ball mill cover protective sleeve is a solid layer, the solid layer can provide sufficient rigidity and support force, and can disperse the pressure. The lower layer of the ball mill cover protective sleeve is a hollow layer, the hollow layer is used for accommodating the pressure release anti-blocking ball mill cover, and the hollow layer can reduce the weight of the whole structure.

[0009] In some optional embodiments, the deflation anti-blocking ball mill cover further comprises: a motor, a lead screw transmission device, and a push block.

[0010] The push block passes through a push slot of the deflation anti-blocking ball mill cover.

[0011] The upper end of the push block is sleeved on a transmission shaft of the lead screw transmission device.

[0012] The lower end of the push block is fixedly connected with the anti-blocking device.

[0013] The motor drives the transmission shaft of the lead screw transmission device to rotate.

[0014] In the above technical solution, the motor drives the lead screw transmission device, so that the push block can move accurately according to the preset program or instruction. This realizes the automatic control of the deflation process, reduces the dependence on manual operation, and improves the work efficiency and accuracy. The lead screw transmission device has high precision and stable transmission performance, which can ensure the accurate control of the position and speed of the push block during movement. The combination of the motor and the lead screw transmission device has high reliability and durability, and can withstand the vibration and impact generated during the ball milling process. This reduces the risk of equipment failure and improves the stability and continuity of the production line.

[0015] In some optional embodiments, a first distance sensor is arranged at the first end of the push slot.

[0016] When the push block moves to the first end of the push slot, the deflation hole is exposed; the first distance sensor is used to detect whether the push block moves to the first end of the push slot, and sends a signal for indicating the motor to stop rotating when the push block moves to the first end of the push slot.

[0017] In the above technical solution, the first distance sensor can accurately detect whether the push block moves to the first end of the push slot, so as to ensure that the deflation hole is accurately exposed when needed. This avoids the problem of incomplete opening of the deflation hole due to inaccurate position of the push block. When the push block reaches the specified position, the first distance sensor sends a signal to indicate the motor to stop rotating, avoiding unnecessary energy consumption and excessive wear of the push block, the lead screw transmission device, and other components. This helps to prolong the service life of the equipment and reduce the maintenance cost.

[0018] In some optional embodiments, a second distance sensor is arranged at the second end of the push slot.

[0019] When the push block moves to the second end of the push slot, the deflation hole is blocked; the second distance sensor is used to detect whether the push block moves to the second end of the push slot, and sends a signal for indicating the motor to stop rotating when the push block moves to the second end of the push slot.

[0020] In the technical solution, the first distance sensor and the second distance sensor can be used in combination to achieve bidirectional position control of the push block. Whether the push block moves towards the direction of exposing the air release hole or towards the direction of shielding the air release hole, it can be accurately detected and controlled. When the push block moves to the first end of the push groove, the first distance sensor sends a signal to stop the motor from rotating, thereby exposing the air release hole for air release. After air release is completed, the push block can move in the opposite direction until the second distance sensor detects that it reaches the second end and sends a stop signal.

[0021] In some optional embodiments, the air release anti-blocking ball mill cover further comprises an air release valve and an electric actuator.

[0022] The air release hole is in communication with the air release valve.

[0023] The electric actuator is used to control the opening degree of the air release valve.

[0024] In the technical solution, during the process of opening the air release valve for air release after the ball milling is completed, the electric actuator can accurately control the opening degree of the air release valve, control the release rate of the pressure in the ball mill tank, and prevent the slurry in the tank from being sprayed out.

[0025] In some optional embodiments, the ball mill cover protection sleeve comprises a fixing sleeve, and the ball mill protection cover is further provided with an extension hole; the extension hole is in communication with the upper surface and the lower surface of the solid layer; the fixing sleeve is in communication with the extension hole, and the fixing sleeve is arranged in the hollow layer.

[0026] The fixing sleeve is used to be sleeved on the air release valve, so that the air release valve releases the gas to be discharged from the ball mill tank through the extension hole.

[0027] In some optional embodiments, the air release anti-blocking ball mill cover further comprises a pressure sensor; the air release anti-blocking ball mill cover is further provided with a pressure measurement hole.

[0028] The pressure measurement hole is arranged close to the air release hole; during the air release process, the movement of the anti-blocking device exposes the air release hole and the pressure measurement hole; during the ball milling process, the movement of the anti-blocking device shields the air release hole and the pressure measurement hole.

[0029] The pressure sensor is arranged at the position of the pressure measurement hole and is used to detect the pressure in the ball mill tank.

[0030] In the technical solution, during the air release process, the pressure sensor arranged at the position of the pressure measurement hole can monitor the pressure change in the ball mill tank in real time. According to the pressure change, the opening degree of the air release valve is controlled by the electric actuator, thereby controlling the release rate of the pressure in the ball mill tank, so that the slurry in the tank will not be sprayed out. When the pressure in the tank is equal to the atmospheric pressure, it is determined that the air release is completed, so as to timely execute the subsequent process.

[0031] In some optional embodiments, the anti-blocking device is a multi-prism structure, the top of the anti-blocking device is a smooth surface, and the top of the anti-blocking device is in contact with the lower surface of the deflation anti-blocking ball mill cover.

[0032] The prismatic surface of the anti-blocking device is uniformly distributed with micro-prism structures, and the spacing between the micro-prism structures is greater than the bottom diameter of the micro-prism structures.

[0033] In the above technical solution, the prismatic surface of the anti-blocking device is uniformly distributed with micro-prism structures, the height of the micro-prism structures is approximately several microns to tens of microns, and the spacing between the micro-prism structures is greater than the bottom diameter of the micro-prism structures, so that an air layer is formed between the micro-prism top and the slurry, the contact area between the slurry and the anti-blocking device is reduced, the adhesion is reduced, and the slurry is prevented from adhering to the anti-blocking device. After the ball milling is completed, the situation that the slurry remaining on the anti-blocking device falls into the deflation hole during the movement of the anti-blocking device to cause the deflation hole to be blocked can be avoided.

[0034] The ball mill cover for pulp preparation provided in the embodiments of the present application comprises a ball mill body and a ball mill cover for pulp preparation according to any one of the above.

[0035] In some optional embodiments, the ball mill cover for pulp preparation further comprises a tank protection sleeve, and the tank protection sleeve is sleeved outside the ball mill body. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0037] Figure 1 The exploded view of the ball mill cover for pulp preparation provided in the embodiments of the present application;

[0038] Figure 2 The schematic diagram of the ball mill cover for pulp preparation provided in the embodiments of the present application;

[0039] Figure 3 The schematic diagram of the deflation anti-blocking ball mill cover provided in the embodiments of the present application;

[0040] Figure 4 The position schematic diagram of the anti-blocking device at the end of ball milling provided in the embodiments of the present application;

[0041] Figure 5 The position schematic diagram of the anti-blocking device during ball milling provided in the embodiments of the present application;

[0042] Figure 6 The schematic diagram of the anti-blocking device provided in the embodiments of the present application;

[0043] Figure 7 The ball mill tank disassembly diagram for pulp preparation provided by the embodiment of the application;

[0044] Figure 8 The ball mill tank working flow chart provided by the embodiment of the application.

[0045] Icon: 1-ball mill cover protective sleeve, 11-solid layer, 12-hollow layer, 13-fixing sleeve, 14-elongated hole, 2-degassing anti-blocking ball mill cover, 21-motor, 22-screw transmission device, 23-push block, 24-push groove, 25-degassing valve, 26-electric actuator, 27-pressure sensor, 28-anti-blocking device, 29-pressure measuring hole, 210-degassing hole, 3-ball mill tank body, 4-ball mill tank body protective sleeve. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the application will be described below with reference to the drawings in the embodiments of the application.

[0047] Please refer to Figure 1 and Figure 2 , Figure 1 The ball mill cover disassembly diagram for pulp preparation provided by the embodiment of the application, Figure 2 The ball mill cover schematic diagram for pulp preparation provided by the embodiment of the application.

[0048] The ball mill cover for pulp preparation provided by the embodiment of the application comprises: a ball mill cover protective sleeve 1 and a degassing anti-blocking ball mill cover 2; the ball mill cover protective sleeve 1 comprises a hollow layer 12 and a solid layer 11, and the hollow layer 12 is used for accommodating the degassing anti-blocking ball mill cover 2; the degassing anti-blocking ball mill cover 2 comprises an anti-blocking device 28 and a degassing hole 210; the anti-blocking device 28 is used for exposing the degassing hole 210 by moving the anti-blocking device 28 in the degassing process; and the anti-blocking device 28 is used for shielding the degassing hole 210 by moving the anti-blocking device 28 in the ball milling process.

[0049] In the embodiment of the application, the degassing anti-blocking ball mill cover 2 comprising the anti-blocking device 28 can shield the degassing hole 210 in the ball milling process, so as to prevent the high-viscosity pulp from blocking the degassing hole 210, which solves the problem that the degassing valve of the traditional ball mill tank is easy to be blocked, and ensures that the degassing can be smoothly performed after the ball milling is completed. The upper layer of the ball mill cover protective sleeve 1 is the solid layer 11, which can provide sufficient rigidity and support force and disperse pressure. The lower layer of the ball mill cover protective sleeve 1 is the hollow layer 12, which is used for accommodating the degassing anti-blocking ball mill cover 2, and the hollow layer 12 can reduce the weight of the whole structure.

[0050] Please refer to Figure 3 , Figure 3 The degassing anti-blocking ball mill cover 2 schematic diagram provided by the embodiment of the application.

[0051] In some optional embodiments, the deflation anti-blocking ball mill cover 2 further comprises a motor 21, a lead screw transmission device 22, and a push block 23; the push block 23 passes through a push slot 24 of the deflation anti-blocking ball mill cover 2; the upper end of the push block 23 is sleeved on the transmission shaft of the lead screw transmission device 22; the lower end of the push block 23 is fixedly connected with the anti-blocking device 28; and the motor 21 drives the transmission shaft of the lead screw transmission device 22 to rotate.

[0052] In some optional embodiments, the length of the push slot 24 is designed to ensure that the anti-blocking device 28 does not expose the push slot 24 on the bottom surface of the ball mill cover during the entire movement process, thereby ensuring that the slurry does not spray from the push slot 24 during the ball milling process and the deflation process.

[0053] In the embodiments of the present application, the motor 21 drives the lead screw transmission device 22, so that the push block 23 can move accurately according to the preset program or instructions. This realizes the automatic control of the deflation process, reduces the dependence on manual operation, and improves the work efficiency and accuracy. The lead screw transmission device 22 has high precision and stable transmission performance, which can ensure the accurate control of the position and speed of the push block 23 during movement. The combination of the motor 21 and the lead screw transmission device 22 has high reliability and durability, and can withstand the vibration and impact generated during the ball milling process. This reduces the risk of equipment failure and improves the stability and continuity of the production line.

[0054] In some optional embodiments, the first end of the push slot 24 is provided with a first distance sensor; when the push block 23 moves to the first end of the push slot 24, the deflation hole 210 is exposed; the first distance sensor is used to detect whether the push block 23 moves to the first end of the push slot 24, and sends a signal for indicating the motor 21 to stop rotating when the push block 23 moves to the first end of the push slot 24.

[0055] In the embodiments of the present application, the first distance sensor can accurately detect whether the push block 23 moves to the first end of the push slot 24, thereby ensuring that the deflation hole 210 is accurately exposed when needed. This avoids the problem of incomplete opening of the deflation hole 210 due to inaccurate position of the push block 23. When the push block 23 reaches the specified position, the first distance sensor sends a signal to indicate the motor 21 to stop rotating, avoiding unnecessary energy consumption and excessive wear of the push block 23, the lead screw transmission device 22 and other components. This helps to prolong the service life of the equipment and reduce maintenance costs.

[0056] In some optional embodiments, the second end of the push groove 24 is provided with a second distance sensor; when the push block 23 moves to the second end of the push groove 24, the air release hole 210 is blocked; the second distance sensor is used to detect whether the push block 23 moves to the second end of the push groove 24, and sends a signal for indicating the control motor 21 to stop rotating when the push block 23 moves to the second end of the push groove 24.

[0057] In the embodiments of the present application, the first distance sensor and the second distance sensor can be used in combination to achieve bidirectional position control of the push block 23. Whether the push block 23 moves towards the direction of exposing the air release hole 210 or towards the direction of blocking the air release hole 210, it can be accurately detected and controlled. When the push block 23 moves to the first end of the push groove 24, the first distance sensor sends a signal to make the motor 21 stop rotating, so as to expose the air release hole 210 for air release. After the air release is completed, the push block 23 can move in the opposite direction until the second distance sensor detects that it reaches the second end and sends a stop signal.

[0058] In some optional embodiments, the air release anti-blocking ball mill cover 2 further comprises an air release valve 25 and an electric actuator 26; the air release hole 210 is communicated with the air release valve 25; and the electric actuator 26 is used to control the opening degree of the air release valve 25.

[0059] In the embodiments of the present application, during the process of opening the air release valve 25 for air release after the ball milling is completed, the electric actuator 26 can accurately control the opening degree of the air release valve 25, control the rate of pressure release in the ball mill tank, and make the slurry in the tank not be sprayed out.

[0060] In some optional embodiments, the ball mill cover protective sleeve 1 comprises a fixing sleeve 13 and an extension hole 14; the extension hole 14 is communicated with the upper surface and the lower surface of the solid layer 11; the fixing sleeve 13 is communicated with the extension hole 14, and the fixing sleeve 13 is arranged in the hollow layer 12; and the fixing sleeve 13 is used to be sleeved on the air release valve 25, so that the air release valve 25 releases the gas to be discharged from the ball mill through the extension hole 14.

[0061] Please refer to Figure 4 and Figure 5 , Figure 4 the position schematic view of the air release anti-blocking device 28 provided in the embodiments of the present application, Figure 5 the position schematic view of the air release anti-blocking device 28 provided in the embodiments of the present application.

[0062] In some alternative embodiments, the deflation anti-blocking ball mill cover 2 further comprises a pressure measuring hole 29 and a pressure sensor 27; the pressure measuring hole 29 is arranged close to the deflation hole 210; during deflation, the moving anti-blocking device 28 exposes the deflation hole 210 and the pressure measuring hole 29; during ball milling, the moving anti-blocking device 28 blocks the deflation hole 210 and the pressure measuring hole 29; the pressure sensor 27 is arranged at the position of the pressure measuring hole 29 to detect the pressure in the ball mill tank.

[0063] In the embodiments of the present application, during deflation, the pressure sensor 27 arranged at the position of the pressure measuring hole 29 can monitor the pressure change in the ball mill tank in real time. According to the pressure change, the opening of the deflation valve 25 is controlled by the electric actuator 26, so as to control the rate of pressure release in the ball mill tank, so that the slurry in the tank will not be sprayed out. When the pressure in the tank is equal to the atmospheric pressure, it is determined that the deflation is completed, so as to timely execute the subsequent process.

[0064] Please refer to Figure 6 , Figure 6 The schematic diagram of the anti-blocking device 28 provided in the embodiments of the present application is shown.

[0065] In some alternative embodiments, the anti-blocking device 28 is a multi-prism structure, the top of the anti-blocking device 28 is a smooth surface, and the top of the anti-blocking device 28 is in contact with the lower surface of the deflation anti-blocking ball mill cover 2; the prismatic surface of the anti-blocking device 28 is uniformly distributed with micro-cone structures; the spacing between the micro-cone structures is greater than the bottom diameter of the micro-cone structures.

[0066] In the embodiments of the present application, the prismatic surface of the anti-blocking device 28 is uniformly distributed with micro-cone structures, the height of the micro-cone structures is about several microns to tens of microns, and the spacing between the micro-cone structures is greater than the bottom diameter of the micro-cone structures, so that an air layer is formed between the top of the micro-cone and the slurry, the contact area between the slurry and the anti-blocking device 28 is reduced, the adhesion is reduced, and the slurry is prevented from adhering to the anti-blocking device 28, so as to avoid the situation that the slurry remaining on the anti-blocking device 28 falls into the deflation hole 210 during the movement of the anti-blocking device 28, causing the deflation hole 210 to be blocked.

[0067] Specifically, the deflation anti-blocking ball mill cover 2, the push block 23 and the anti-blocking device 28 are all made of polytetrafluoroethylene. Since the slurry may contact the bottom surface of the ball mill cover during the ball milling process, the excellent chemical stability of polytetrafluoroethylene can resist the corrosiveness of the slurry. Secondly, during the movement of the anti-blocking device 28, the push block 23, the anti-blocking device 28 and the ball mill cover will contact each other, and polytetrafluoroethylene has excellent sliding performance and high wear resistance, which can reduce friction and wear.

[0068] During the whole ball milling process, the position of the anti-blocking device 28 covers the pressure measuring hole 29 and the air release hole 210. After the ball milling is completed, the motor 21 starts to work, and the push block 23 moves linearly through the screw rod transmission device 22. The anti-blocking device 28 is threadedly connected with the push block 23, so the anti-blocking device 28 also moves linearly. At this time, the anti-blocking device 28 does not cover the pressure measuring hole 29 and the air release hole 210. Therefore, the anti-blocking device 28 covers the air release hole 210 during the ball milling process, and moves out of the air release hole 210 after the ball milling is completed, thereby avoiding the problem that the air release valve cannot be used due to the blockage of the slurry.

[0069] The anti-blocking device 28 of the embodiment is a four-prism structure, the top of which is smooth and in contact with the bottom of the ball mill cover. The four prism surfaces of the anti-blocking device 28 are uniformly distributed with micro-cone structures, the height of which is in the range of several microns to tens of microns, which ensures that an air layer is formed between the top of the micro-cone and the slurry. The spacing between the micro-cones should be slightly larger than the diameter of the bottom, so as to ensure that a sufficient air layer exists.

[0070] The micro-cone structures can significantly reduce the contact area between the slurry and the anti-blocking device 28, thereby reducing the adhesion, so that the slurry cannot adhere to the anti-blocking device 28. In this way, after the ball milling is completed, the slurry remaining on the anti-blocking device 28 can be prevented from falling into the air release hole 210 during the movement process, thereby avoiding the blockage.

[0071] Please refer to Figure 7 , Figure 7 The ball mill tank for making pulp provided by the embodiment of the application is shown in the exploded view.

[0072] The ball mill tank for making pulp provided by the embodiment of the application is shown in the exploded view.

[0073] In some optional embodiments, a tank protection sleeve is further included, which is sleeved outside the ball mill tank body 3.

[0074] Specifically, the material of the ball mill tank body 3 is polytetrafluoroethylene, which has excellent chemical stability and can resist the corrosion of the slurry. However, due to the high ball milling speed and long time required for preparing the slurry, the temperature in the tank is high, which causes the tank body to easily expand and deform when heated. Therefore, the ball mill tank body is sleeved with a stainless steel tank protection sleeve 4. The ball mill tank body 3 and the tank protection sleeve 4 are connected through the bottom screws. The tank protection sleeve has high thermal conductivity, high rigidity and high mechanical strength, and can provide a firm external constraint when the ball mill tank expands due to heating, thereby preventing the deformation of the ball mill tank body 3 and prolonging the service life.

[0075] Please refer to Figure 8 , Figure 8 The working process of the ball mill tank provided by the embodiment of the application is shown in the flowchart.

[0076] When the ball milling process is carried out, the personnel sets the ball milling speed and time, and when the ball milling time is up, the ball mill controller receives the signal sent by the time counter, and the ball milling is ended.

[0077] At the same time, the time counter sends an additional signal to the controller to start the motor 21 driver in the screw drive device 22 (the motor 21 driver and the controller are in the control cabinet beside the ball mill, and the motor 21 driver and the motor 21 are connected wirelessly), the motor 21 rotates forward, the push block 23 moves linearly, and the anti-blocking device 28 moves linearly, so that the pressure measuring hole 29 and the air release hole 210 are exposed.

[0078] The two ends of the push groove 24 are embedded with distance sensors.

[0079] When the motor 21 rotates forward, the first distance sensor at one end of the push groove 24 measures the distance from the push block 23, and when the distance threshold S1 (the position of the pressure measuring hole 29 and the air release hole 210) is reached, the distance sensor sends a signal to the controller to stop the motor 21 from rotating, i.e. the anti-blocking device 28 stops moving.

[0080] At this time, the first distance sensor sends an additional signal to the controller, and the controller then reads the signal of the "pressure sensor 27" to understand the current tank pressure. According to the preset pressure release rate v (this pressure release rate v is the maximum rate that will not cause the tank slurry to spray), the controller calculates the opening degree of the air release valve 25, and adjusts the valve opening degree through the electric actuator 26. After the valve is opened, the tank pressure begins to drop. The controller adjusts the valve opening degree in real time through the feedback signal of the pressure sensor 27 to ensure that the pressure drops at the predetermined rate.

[0081] When the tank pressure drops to the same as the atmospheric pressure, the pressure sensor 27 sends a signal to the controller to start the motor 21 driver of the motor 21 in the screw drive device 22, and the motor 21 reverses to make the anti-blocking device 28 move linearly in the opposite direction.

[0082] When the motor 21 reverses, the second distance sensor at the other end of the push groove 24 measures the distance from the push block 23, and when the distance threshold S2 is reached (the starting position of the anti-blocking device 28), the second distance sensor sends a signal to the controller to stop the motor 21 from rotating, i.e. the anti-blocking device 28 returns to the starting position and stops moving.

[0083] At the same time, the pressure sensor 27 sends an additional signal to the controller to start the air release end prompt buzzer, which informs the personnel through the buzzer sound that the air release is ended, and the next preparation process can be carried out. The air release end prompt buzzer can be installed beside the ball mill operation cabinet.

[0084] The electric actuator 26 is connected to the controller wirelessly, and the pressure sensor 27 is connected to the controller wirelessly. The sensors and the small motor 21 in the deflation anti-blocking ball mill cover 2 are powered by built-in batteries.

[0085] In the embodiments provided in the present application, it should be understood that the disclosed device and method can be implemented in other manners. The embodiments described above are merely specific implementation manners of the device, and the unit division is only a logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, or the among different units, can be indirect couplings or communication connections through some interfaces, devices or unit intermediaries, and can be in electrical, mechanical or other forms.

[0086] In addition, the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. In actual implementation, some or all of the units can be selected according to the actual needs to achieve the purposes of the embodiments of the present application.

[0087] In addition, each functional module in each embodiment of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0088] In this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations.

[0089] The above only describes the embodiments of the present application, and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A ball mill cover for pulping, characterized in that, include: Ball mill cover protective sleeve and venting / anti-clogging ball mill cover; The ball mill cover protective sleeve includes a hollow layer and a solid layer, wherein the hollow layer is used to accommodate the venting and anti-clogging ball mill cover; The venting and anti-clogging ball mill cover includes an anti-clogging device, and the venting and anti-clogging ball mill cover is provided with a venting hole; the anti-clogging device is used to move the anti-clogging device to expose the venting hole during the venting process; and to move the anti-clogging device to block the venting hole during the ball milling process.

2. The ball mill cover for pulping as described in claim 1, characterized in that, The venting and anti-clogging ball mill cover also includes: a motor, a lead screw transmission device, and a push block; The push block passes through the push groove of the venting and anti-clogging ball mill cover; The upper end of the pusher block is sleeved on the drive shaft of the lead screw drive device; The lower end of the push block is fixedly connected to the anti-blocking device; The motor drives the drive shaft of the lead screw transmission device to rotate.

3. The ball mill cover for pulping as described in claim 2, characterized in that, A first distance sensor is provided at the first end of the push groove; When the pusher block moves to the first end of the pusher groove, the vent hole is exposed; the first distance sensor is used to detect whether the pusher block has moved to the first end of the pusher groove, and when the pusher block moves to the first end of the pusher groove, it sends a signal to indicate that the motor should stop rotating.

4. The ball mill cover for pulping as described in claim 2, characterized in that, A second distance sensor is provided at the second end of the push groove; When the pusher block moves to the second end of the pusher groove, it blocks the vent hole; the second distance sensor is used to detect whether the pusher block has moved to the second end of the pusher groove, and when the pusher block moves to the second end of the pusher groove, it sends a signal to indicate that the motor should stop rotating.

5. The ball mill cover for pulping as described in claim 1, characterized in that, The venting and anti-clogging ball mill cover also includes: a venting valve and an electric actuator; The vent hole is connected to the vent valve; The electric actuator is used to control the opening degree of the vent valve.

6. The ball mill cover for pulping as described in claim 5, characterized in that, The ball mill cover protective sleeve includes a fixing sleeve, and the ball mill protective cover is also provided with an extension hole; the extension hole connects the upper surface and the lower surface of the solid layer; the fixing sleeve connects to the extension hole, and the fixing sleeve is disposed inside the hollow layer; The fixing sleeve is used to fit onto the vent valve, so that the vent valve releases gas through the extension hole and discharges it from the ball mill jar.

7. The ball mill cover for pulping as described in claim 1, characterized in that, The venting and anti-clogging ball mill cover also includes a pressure sensor; the venting and anti-clogging ball mill cover is also provided with a pressure measuring hole; The pressure measuring hole is located close to the vent hole; during the venting process, the anti-clogging device is moved to expose the vent hole and the pressure measuring hole; during the ball milling process, the anti-clogging device is moved to block the vent hole and the pressure measuring hole. The pressure sensor is located at the pressure measuring hole and is used to detect the pressure inside the ball mill jar.

8. The ball mill cover for pulping as described in claim 1, characterized in that, The anti-clogging device has a multi-faceted pyramidal structure, and the top of the anti-clogging device is a smooth surface. The top of the anti-clogging device is in contact with the lower surface of the venting and anti-clogging ball mill cover. The anti-clogging device has micro-conical structures evenly distributed on its edge surface; the spacing between the micro-conical structures is greater than the bottom diameter of the micro-conical structure.

9. A ball mill jar for pulping, characterized in that, It includes a ball mill tank and a ball mill cover for pulping as described in any one of claims 1-8.

10. The ball mill jar for pulping as described in claim 9, characterized in that, Also includes: A protective sleeve is fitted over the outside of the ball mill jar.

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