Blockage detection device for feed opening and wet ball mill

Abstract

The invention relates to the technical field of material grinding, in particular to a feed opening blockage detection device and a wet ball mill. The invention provides a feed opening blockage detection device which is applied to a wet ball mill, the wet ball mill comprises a feed unit, the feed unit is provided with a feed opening, and the feed opening blockage detection device comprises a detection unit located at the feed opening and used for detecting the blockage condition of the feed opening. According to the wet ball mill, the detection unit is arranged at the feed opening of the wet ball mill, so that the detection unit can monitor the blockage condition of the feed opening, visual inspection is not needed, equipment damage, material overflow or production interruption caused by the fact that blockage is not found in time are avoided, and the operation safety and operation continuity of the wet ball mill are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of material grinding, and particularly to a blanking port blockage detection device and a wet ball mill. Background Art

[0002] A wet ball mill is a grinding device widely used in industrial fields such as metallurgy, building materials, chemical industry, and ceramics, mainly used for fine grinding of materials. Different from a dry ball mill, a wet ball mill adds an appropriate amount of liquid medium (usually water) during operation, enabling the material to be ground into the required fineness in a liquid phase environment.

[0003] However, in practical applications, when the material is discharged from the blanking port of the wet ball mill, due to the characteristics of the material itself (such as being wet, having strong adhesiveness, or uneven particle size, etc.), the blanking port often becomes blocked. Once blocked, if not discovered in time, the material may continue to accumulate and overflow, which will not only cause the equipment to become stuck and damaged, increase the risk of environmental pollution, but also may cause production interruption and result in economic losses. In addition, the safety risks during manual inspection and cleaning cannot be ignored. Summary of the Invention

[0004] The present invention provides a blanking port blockage detection device and a wet ball mill to solve the technical problem that the blockage of the blanking port cannot be detected.

[0005] The present invention provides a blanking port blockage detection device applied to a wet ball mill, and the wet ball mill includes a blanking unit having a blanking port, including: a detection unit located at the blanking port for detecting the blockage condition of the blanking port.

[0006] According to an embodiment of the present invention, the detection unit includes a stacking induction mechanism, a connection mechanism, and a one-way rotation mechanism; the stacking induction mechanism is located at the blanking port, and the stacking induction mechanism is connected to the one-way rotation mechanism through the connection mechanism. In the state where the blanking port is blocked, the stacking induction mechanism is used to be lifted by the material in the reverse direction of the blanking direction; the one-way rotation mechanism is arranged on the side wall of the blanking unit, and in the state where the blanking port is blocked, the one-way rotation mechanism is used to rotate in the reverse direction of the blanking direction.

[0007] According to an embodiment of the present invention, the detection unit further includes a rotation detection mechanism for detecting the rotation condition of the one-way rotation mechanism.

[0008] According to an embodiment of the present invention, the wet ball mill further includes a controller, and the rotation detection mechanism is electrically connected to the controller.

[0009] According to an embodiment of the present invention, it further includes a warning unit, electrically connected to the controller. In the state where the blanking port is blocked, the controller controls the warning unit to issue a warning reminder and stops the machine.

[0010] According to an embodiment of the present invention, the one-way rotation mechanism includes a one-way bearing and a trigger structure; the one-way bearing is arranged on the side wall of the blanking unit. In the state where the blanking port is blocked, the one-way rotation mechanism is used to rotate in the reverse direction of the blanking direction; the trigger structure is arranged on the outer peripheral wall of the one-way bearing, and the trigger structure can be switched between a working position and a blocked position. In the state where the blanking port is blocked, the rotation detection mechanism is located at the blocked position; the rotation detection mechanism detects the rotation condition of the one-way rotation mechanism by detecting the position of the trigger structure.

[0011] According to an embodiment of the present invention, the rotation detection mechanism is an inductive proximity switch, and the trigger structure is a structural member made of metal.

[0012] According to an embodiment of the present invention, the rotation detection mechanism is a Hall proximity switch, and the trigger structure is a magnet.

[0013] According to an embodiment of the present invention, the accumulation induction mechanism is in a ring shape, is arranged in the blanking unit, and is arranged coaxially with the blanking unit; the side wall of the blanking unit has a mounting hole communicating with its interior, and the one-way rotation mechanism is arranged at the mounting hole.

[0014] The present invention also provides a wet ball mill, including the blanking port blockage detection device of the above embodiment.

[0015] The characteristics and advantages of the blanking port blockage detection device and the wet ball mill of the present invention are: By arranging a detection unit at the blanking port of the wet ball mill, the detection unit can monitor the blockage condition of the blanking port, without relying on naked-eye observation, avoiding equipment damage, material overflow or production interruption caused by the blockage not being detected in time, and improving the operation safety and operation continuity of the wet ball mill. Description of the Drawings

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0017] Figure 1Top view of the blanking unit and the blanking port blockage detection device of the present invention; Figure 2 Stereogram of the blanking unit and the blanking port blockage detection device of the present invention; Figure 3 Side view of the blanking unit and the blanking port blockage detection device of the present invention; Figure 4 For the present invention Figure 3 Cross-sectional view along the A-A direction in the present invention.

[0018] Explanation of reference numerals: 100, detection unit; 110, accumulation induction mechanism; 120, connection mechanism; 130, one-way rotation mechanism; 131, one-way bearing; 132, trigger structure; 140, rotation detection mechanism; 1000, blanking unit; 1001, blanking port; 1002, mounting hole; F, blanking direction. Detailed implementation manners

[0019] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0021] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined. In addition, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Embodiment 1 As Figures 1 to 4 shown, the present invention provides a detection device for the blockage of the feeding port, which is applied to a wet ball mill. The wet ball mill includes a feeding unit 1000, and the feeding unit 1000 has a feeding port 1001, including: a detection unit 100, which is located at the feeding port 1001 and is used to detect the blockage condition of the feeding port 1001.

[0023] In specific implementation, by arranging the detection unit 100 at the feeding port 1001 of the wet ball mill, the detection unit 100 can monitor the blockage condition of the feeding port 1001, without relying on naked-eye observation, avoiding equipment damage, material spillage or production interruption caused by the blockage not being detected in time, and improving the operation safety and operation continuity of the wet ball mill.

[0024] In this embodiment, the wet ball mill may be the prior art. The feeding port 1001 may be located at the upper end of the feeding unit 1000.

[0025] According to an embodiment of the present invention, the detection unit 100 includes a stacking induction mechanism 110, a connection mechanism 120 and a one-way rotation mechanism 130; the stacking induction mechanism 110 is located at the feeding port 1001, and the stacking induction mechanism 110 is connected to the one-way rotation mechanism 130 through the connection mechanism 120. In the state where the feeding port 1001 is blocked, the stacking induction mechanism 110 is used to be lifted by the material in the reverse direction of the feeding direction F;; the one-way rotation mechanism 130 is arranged on the side wall of the feeding unit 1000. In the state where the feeding port 1001 is blocked, the one-way rotation mechanism 130 is used to rotate in the reverse direction of the feeding direction F.

[0026] In specific implementation, the accumulation sensing mechanism 110 is arranged at the material discharge port 1001, and its function is to generate a mechanical displacement in the reverse direction of the material discharge direction F when the material discharge port 1001 is blocked and the material accumulates; the connection mechanism 120 is used to connect the accumulation sensing mechanism 110 with the one-way rotation mechanism 130 and transmit the reverse movement of the accumulation sensing mechanism 110 to the one-way rotation mechanism 130; the one-way rotation mechanism 130 is arranged on the side wall of the material discharge unit 1000, and its function is to allow it to drive the rotation in the reverse direction of the material discharge direction F when the accumulation sensing mechanism 110 moves in the reverse direction, realize the transmission of the motion signal, and prevent false triggering in the non-blocked state, that is, the one-way rotation mechanism 130 can only rotate upward and cannot rotate downward. Based on the synergistic effect of the above structure, by introducing the accumulation sensing mechanism 110, the connection mechanism 120 and the one-way rotation mechanism 130 into the detection unit 100, when the material discharge port 1001 is blocked and the material backlog causes the accumulation sensing mechanism 110 to generate a reverse movement, this movement drives the one-way rotation mechanism 130 to generate a reverse rotation through the connection mechanism 120, thereby providing a mechanical signal that can be recognized subsequently, realizing the conversion of the blocked state of the material discharge port 1001 into a detectable mechanical action, laying a foundation for subsequent signal recognition and response control, and improving the sensitivity of detection and the reliability of the structure.

[0027] According to an embodiment of the present invention, the detection unit 100 further includes a rotation detection mechanism 140 for detecting the rotation condition of the one-way rotation mechanism 130.

[0028] In specific implementation, the rotation detection mechanism 140 is used to detect the rotation condition of the one-way rotation mechanism 130, and its function is to convert the rotation action generated by the one-way rotation mechanism 130 in the blocked state of the material discharge port 1001 into an electrical signal or other detection signals that can be recognized. When the material discharge port 1001 is blocked, the accumulation sensing mechanism 110 generates a reverse movement due to the reverse accumulation of the material, drives the one-way rotation mechanism 130 to rotate through the connection mechanism 120, and then the rotation detection mechanism 140 monitors this rotation state. By converting the mechanical movement into a detection signal, the electrical signal perception of the blocked state of the material discharge port 1001 is realized, providing an input basis for subsequent alarm or automatic control, and improving the automation level and practical application value of the entire detection device.

[0029] According to an embodiment of the present invention, the wet ball mill further includes a controller, and the rotation detection mechanism 140 is electrically connected to the controller.

[0030] In specific implementation, the controller is used to receive the detection signal from the rotation detection mechanism 140, and perform logical judgment and control response accordingly; the rotation detection mechanism 140 establishes a signal transmission path with the controller through electrical connection. Combined with the above structure, when the feed port 1001 is blocked, the reverse movement of the accumulation sensing mechanism 110 drives the one-way rotation mechanism 130 to rotate in the opposite direction, and the rotation detection mechanism 140 senses the rotation and outputs a signal to the controller, which determines whether there is a blockage based on the signal. In this way, a complete signal chain from mechanical action recognition to electrical signal reception and then to logical control response is realized, so that the detection results can be automatically uploaded to the controller, providing basic support for subsequent control operations such as alarms and shutdowns, and enhancing the intelligence and response efficiency of the system.

[0031] According to one embodiment of the present invention, it also includes a warning unit, which is electrically connected to the controller. When the feed opening 1001 is blocked, the controller controls the warning unit to issue a warning reminder and shut down the machine.

[0032] In specific implementation, when the feed port 1001 is blocked, the reverse movement of the accumulation sensing mechanism 110 drives the one-way rotation mechanism 130 to rotate in the opposite direction, and the rotation detection mechanism 140 senses the rotation and transmits the signal to the controller. After the controller determines that it is in a blocked state, it controls the warning unit to emit an audible and visual prompt or other warning signal, and executes the shutdown operation in conjunction. By introducing the warning unit and working in conjunction with the controller, the device not only has the ability to automatically identify the blocked state, but also has the ability to automatically respond to instant reminders and fault handling, thereby effectively reducing the burden of manual monitoring and improving equipment safety and operational reliability.

[0033] According to one embodiment of the present invention, the one-way rotation mechanism 130 includes a one-way bearing 131 and a trigger structure 132; the one-way bearing 131 is arranged on the side wall of the unloading unit 1000, and when the unloading port 1001 is blocked, the one-way rotation mechanism 130 is used to rotate in the opposite direction of the unloading direction F; the trigger structure 132 is arranged on the outer peripheral wall of the one-way bearing 131, and the trigger structure 132 can switch between a working position and a blocked position, and when the unloading port 1001 is blocked, the rotation detection mechanism 140 is located in the blocked position; the rotation detection mechanism 140 detects the rotation of the one-way rotation mechanism 130 by detecting the position of the trigger structure 132.

[0034] In specific implementation, when blockage occurs at the feed port 1001, the accumulation sensing mechanism 110 moves upward in the opposite direction due to the back pressure of the material, and drives the one-way rotation mechanism 130 to rotate in the opposite direction through the connecting mechanism 120. The one-way bearing 131 is only allowed to rotate in this direction due to its structural characteristics, driving the trigger structure 132 to switch to the blocking position. At this time, the rotation detection mechanism 140 can accurately detect the position change.

[0035] In this embodiment, the inner ring of the one-way bearing 131 can be in contact with the hole wall of the mounting hole 1002, and the outer ring can be connected to the trigger structure 132 and the connection mechanism 120.

[0036] In a feasible embodiment, the rotation detection mechanism 140 is an inductive proximity switch, and the trigger structure 132 is a structural member made of metal.

[0037] During specific implementation, when the material discharge port 1001 is blocked, causing the accumulation sensing mechanism 110 to move upward in the reverse direction and drive the one-way rotation mechanism 130 to rotate in the reverse direction, the trigger structure 132 made of metal enters the sensing range of the proximity switch, and the proximity switch outputs a signal with a changed state.

[0038] In another feasible embodiment, the rotation detection mechanism 140 is a Hall proximity switch, and the trigger structure 132 is a magnet.

[0039] During specific implementation, when the material discharge port 1001 is blocked, causing the accumulation sensing mechanism 110 to move in the reverse direction and drive the one-way rotation mechanism 130 to rotate in the reverse direction, the magnet, as the trigger structure 132, rotates accordingly and enters the sensing area of the Hall proximity switch, and is thus detected.

[0040] According to an embodiment of the present invention, the accumulation sensing mechanism 110 is in a ring shape, penetrates through the material discharging unit 1000, and is arranged coaxially with the material discharging unit 1000; the side wall of the material discharging unit 1000 has a mounting hole 1002 communicating with its interior, and the one-way rotation mechanism 130 is arranged at the mounting hole 1002.

[0041] During specific implementation, the accumulation sensing mechanism 110 being in a ring shape, penetrating through the material discharging unit 1000, and being arranged coaxially with the material discharging unit 1000 serves to surround and penetrate through the material discharging unit 1000 to form a closed structure, ensuring that the accumulation sensing mechanism 110 can comprehensively sense the blockage condition inside the material discharge port 1001; the side wall of the material discharging unit 1000 has a mounting hole 1002 for fixing and installing the one-way rotation mechanism 130, enabling this mechanism to be mechanically connected to the accumulation sensing mechanism 110 through the mounting hole 1002, and realizing the reverse rotation of the one-way rotation mechanism 130 driven by the reverse movement of the accumulation sensing mechanism 110 in a blocked state. Combining the functions of the above components, through the design of the ring-shaped and penetrating accumulation sensing mechanism 110, the all-round monitoring of the blockage state of the material discharge port 1001 is realized. Meanwhile, by arranging the one-way rotation mechanism 130 using the side wall mounting hole 1002, the structural compactness and installation convenience of the device are improved, effectively enhancing the reliability and response efficiency of the blockage detection of the material discharge port 1001 of the wet ball mill.

[0042] In this embodiment, the one-way rotation mechanism 130 may also be called a one-way shaft. The accumulation sensing mechanism 110 may also be called a trigger. The connection mechanism 120 may also be called a probe rod. When materials fall, if they touch the trigger, since the one-way shaft can only rotate upward, the trigger will not move downward; when materials accumulate, as the materials accumulate higher and higher, the trigger will be "lifted", that is, the trigger moves upward. As the trigger moves upward, the probe rod, the one-way bearing 131 and the trigger structure 132 will rotate upward, thus triggering the alarm interlock protection.

[0043] I. Overview of Controller Functions The controller can be a commonly used distributed control system (DCS) or PLC system in industrial control systems, and has the capabilities of data acquisition, logical judgment and control output. Its main functions include: Receiving signals from the rotation detection mechanism 140; Judging whether the current state is a blocked state of the feed inlet 1001; Triggering corresponding warning reminders and / or equipment shutdown controls; Realizing the interlocking control with other process parameters to form a complete blockage protection interlock mechanism.

[0044] II. Blockage Alarm and Interlock Protection Logic To prevent accidents such as equipment damage and slurry overflow caused by material blockage in the wet ball mill, the controller sets the following four types of trigger conditions. As long as any one of these conditions is met, the interlock action - the belt weighing feeder stops operating, thus cutting off the feed and avoiding further deterioration of the blockage situation.

[0045] The interlock trigger conditions are as follows: 1. The wet ball mill is running + the rotation detection mechanism 140 is actuated When the wet ball mill is running, if the rotation detection mechanism 140 (such as a proximity switch or a Hall sensor) in the detection unit 100 is triggered, it indicates that the feed inlet 1001 is blocked. At this time, the belt weighing feeder should be immediately stopped to prevent continued feeding and resulting in accumulation and overflow.

[0046] 2. The wet ball mill is running + the liquid level in the slurry circulation tank > 2 meters If during the operation of the wet ball mill, the liquid level in the slurry circulation tank exceeds the set threshold (such as 2 meters), it indicates that slurry reflux or backlog may occur due to poor feeding. To prevent slurry overflow, the belt weighing feeder needs to be immediately stopped to reduce the feed rate and wait for treatment.

[0047] 3. The wet ball mill is running + the operation signals of both wet ball mill slurry recirculation pumps disappear During the operation of the wet ball mill, if it is detected that both recirculation pumps are not operating (the operation signal is lost), it means that the slurry cannot circulate normally, which may lead to too high slurry concentration or blocked flow, posing a risk of blockage at the feeding port 1001. At this time, the belt weighing feeder should be stopped to prevent the wet ball mill from being overloaded or the feeding port 1001 from being blocked due to poor slurry fluidity.

[0048] 4. Operation of the wet ball mill + Frequency of the inverters of the two wet ball mill recirculation pumps < 40% If the frequencies of the inverters of both recirculation pumps are lower than the set value (for example, 40%), it means that the pump speed is too low and the slurry circulation flow rate is insufficient, presenting a potential blockage hazard.

[0049] At this time, the interlock protection should also be triggered to stop the belt weighing feeder and reduce the feeding speed to avoid aggravating the blockage due to poor slurry fluidity.

[0050] III. Execution of the interlock protection action When any one of the above four conditions is met, the controller immediately performs the following operations: Send out a warning reminder: Notify the operator through audible and visual alarms or other forms; Automatic shutdown control: Send a shutdown command to the belt weighing feeder to stop feeding; Record event information: Record information such as the trigger cause, time, and status into the control system database for subsequent analysis and troubleshooting; Optional extended control: Other devices can also be linked, such as closing the water inlet valve and starting the vibration motor to assist in clearing blockages.

[0051] Embodiment 2 The present invention also provides a wet ball mill, including the feeding port blockage detection device of the above embodiment. The specific structure, working principle, and beneficial effects of the feeding port blockage detection device are the same as those of Embodiment 1 and will not be elaborated here.

[0052] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A blanking port blockage detection device is applied to a wet ball mill. The wet ball mill includes a blanking unit (1000), and the blanking unit (1000) has a blanking port (1001), characterized in that, Comprising: A detection unit (100), located at the blanking port (1001), for detecting the blockage condition of the blanking port (1001).

2. The blanking port blockage detection device according to claim 1, wherein, The detection unit (100) includes a stacking induction mechanism (110), a connection mechanism (120), and a one-way rotation mechanism (130); The stacking induction mechanism (110) is located at the blanking port (1001), and the stacking induction mechanism (110) is connected to the one-way rotation mechanism (130) through the connection mechanism (120). In the state where the blanking port (1001) is blocked, the stacking induction mechanism (110) is used to be lifted by the material in the reverse direction of the blanking direction (F); The one-way rotation mechanism (130) is arranged on the side wall of the blanking unit (1000). In the state where the blanking port (1001) is blocked, the one-way rotation mechanism (130) is used to rotate in the reverse direction of the blanking direction (F).

3. The blanking port blockage detection device according to claim 2, wherein The detection unit (100) further includes a rotation detection mechanism (140), for detecting the rotation condition of the one-way rotation mechanism (130).

4. The blanking port blockage detection device according to claim 3, characterized in that, The wet ball mill further includes a controller, and the rotation detection mechanism (140) is electrically connected to the controller.

5. The blanking port blockage detection device according to claim 4, wherein It further includes a warning unit, electrically connected to the controller. In the state where the blanking port (1001) is blocked, the controller controls the warning unit to issue a warning reminder and stop the machine.

6. The blanking port blockage detection device according to claim 5, characterized in that, The one-way rotation mechanism (130) includes a one-way bearing (131) and a trigger structure (132); The one-way bearing (131) is arranged on the side wall of the blanking unit (1000). In the state where the blanking port (1001) is blocked, the one-way rotation mechanism (130) is used to rotate in the reverse direction of the blanking direction (F); The trigger structure (132) is arranged on the outer peripheral wall of the one-way bearing (131). The trigger structure (132) can switch between a working position and a blocked position. In the state where the blanking port (1001) is blocked, the rotation detection mechanism (140) is located at the blocked position; The rotation detection mechanism (140) detects the rotation condition of the one-way rotation mechanism (130) by detecting the position of the trigger structure (132).

7. The blanking port blockage detection device according to claim 6, characterized in that, The rotation detection mechanism (140) is an inductive proximity switch, and the trigger structure (132) is a structural member made of metal.

8. The blanking port blockage detection device according to claim 6, characterized in that, The rotation detection mechanism (140) is a Hall proximity switch, and the trigger structure (132) is a magnet.

9. The blanking port blockage detection device according to any one of claims 2 to 8, wherein The stacking induction mechanism (110) is annular, penetrates through the blanking unit (1000), and is arranged coaxially with the blanking unit (1000); The side wall of the blanking unit (1000) has an installation hole (1002) communicating with its interior, and the one-way rotation mechanism (130) is arranged at the installation hole (1002).

10. A wet ball mill, characterized in that, Comprising the blanking port blockage detection device according to any one of claims 1 - 9.

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