A spiral pulverizer

Abstract

This application relates to the field of grinding equipment, and particularly to a spiral pulverizer, which includes an outer cylinder and a stirring shaft rotatably arranged inside the outer cylinder. An air outlet is provided on the outer cylinder, and the air outlet is located at a position of the outer cylinder away from the ground and is connected to an external air extraction device. The stirring shaft includes a rotating shaft and spiral blades wound around the rotating shaft. The rotating shaft is rotatably connected to the outer cylinder. A through hole extending through the rotating shaft along its own length direction is provided inside the rotating shaft, and one end of the rotating shaft away from the ground extends outside the outer cylinder. This application has the effect of reducing the comprehensive cost in the pulverizing process.

Description

Technical Field

[0001] The present application relates to the technical field of grinding equipment, and particularly to a spiral pulverizer. Background Art

[0002] Common pulverizing equipment mainly includes various pulverizing equipment such as Raymond mills, vertical mills, ball mills, etc. When producing powders below 200 meshes, the performance of the above pulverizing equipment has little difference. However, when producing powdery materials above 200 meshes, the performance of the above pulverizing equipment will decline significantly, with low production capacity and high power consumption.

[0003] A spiral pulverizer, also known as a tower mill, has higher production efficiency, larger output, and lower power consumption when producing finer powders compared to the above several types of pulverizing equipment. It mainly includes an outer cylinder and a spiral stirring blade disposed inside the outer cylinder. The outer cylinder is filled with friction members (generally steel balls), and the spiral stirring blade is driven to rotate by a motor. During the process of material crushing and pulverizing, the spiral blade rotates, stirring the steel balls to make the mixed materials move frictionally with each other, thereby achieving the grinding of the materials. Usually, after the materials are mixed with clear water, they are injected into the outer cylinder from the bottom of the outer cylinder by a mortar pump, thereby achieving feeding (also known as wet feeding).

[0004] In wet feeding, the raw materials to be ground need to use water as a medium. The raw materials and water are pumped into the mill by a slurry pump, and the ground materials are carried out, and then particle sorting is performed. Although it is relatively simple, subsequent drying of the materials is required, and the process is relatively complex and the production cost is relatively high. Summary of the Invention

[0005] In order to reduce the process cost in the ore pulverizing process, the present application provides a spiral pulverizer.

[0006] A spiral pulverizer provided by the present application adopts the following technical solutions:

[0007] A spiral pulverizer includes an outer cylinder and a stirring shaft rotatably disposed inside the outer cylinder. An air outlet is provided on the outer cylinder, and the air outlet is located at a position of the outer cylinder away from the ground and is connected to an external air extraction device. The stirring shaft includes a rotating shaft and a spiral blade wound around the rotating shaft. The rotating shaft is rotatably connected to the outer cylinder. A through hole penetrating along the length direction of the rotating shaft is provided inside the rotating shaft, and one end of the rotating shaft away from the ground extends to the outside of the outer cylinder.

[0008] By adopting the above technical solution, the rotating shaft extends into the inner part of the outer cylinder, and the hole penetrating through itself inside enables the outer cylinder to be connected to the outside. During the feeding process, the material is filled into the through hole of the rotating shaft in a dry state. Under the action of gravity, the material can fall to the bottom of the outer cylinder, thus realizing feeding. Subsequently, the spiral blade is used to stir and rub the material to achieve grinding of the material. After grinding, the qualified fine powder material is suspended in the air, and the material can be extracted by an external air extraction device. Since there is no need to contact the water pressure during the feeding process, it is convenient for feeding. At the same time, the subsequent drying process is avoided, and the comprehensive cost of material grinding is reduced.

[0009] Optionally, a make-up air hole is provided on the outer cylinder, and the make-up air hole is located at a position of the outer cylinder close to the ground.

[0010] By adopting the above technical solution, during the grinding process, the make-up air hole is externally connected to a blowing device, so that air flows into the outer cylinder and moves upward. On the one hand, it can drive the fine powder material at the bottom to move upward, and on the other hand, it can reduce the pressure on the air extraction device.

[0011] Optionally, a plurality of air outlet holes are evenly spaced along the circumferential direction of the outer cylinder, and a collecting box is provided on the outer cylinder, and the collecting box is communicated with the plurality of air outlet holes.

[0012] By adopting the above technical solution, during the use of the flour mill, the air extraction device is communicated with the inside of the collecting box, so that the air extraction device can synchronously extract air from the plurality of air outlet holes, improving the discharging efficiency.

[0013] Optionally, a partition cylinder is provided inside the collecting box. The two ends of the partition cylinder are respectively connected to two parallel inner side walls of the collecting box, dividing the internal space of the partition cylinder into a discharging cavity communicated with the air outlet holes and a feeding cavity communicated with the through hole on the rotating shaft.

[0014] By adopting the above technical solution, the collecting box is divided by the partition cylinder, so that a feeding cavity is formed inside the collecting box. During the feeding process, the material can be temporarily stored in the feeding cavity, facilitating feeding.

[0015] Optionally, a connecting piece is provided in the feeding cavity. The inside of the connecting piece is hollow, and an opening communicated with the through hole of the rotating shaft is provided at one end close to the rotating shaft. A motor is provided on the side of the connecting piece away from the rotating shaft, and the output shaft of the motor is connected to the connecting piece. A material flow hole communicated with the inside of the connecting piece is opened on the side wall of the connecting piece.

[0016] By adopting the above technical solution, the motor drives the rotating shaft through the connecting piece. At the same time, the material flow hole on the connecting piece is used to ensure that the material can smoothly enter the inside of the rotating shaft.

[0017] Optionally, it further includes a feeding device, which is a screw conveyor, and the discharge port of the screw conveyor is communicated with the feeding cavity.

[0018] By adopting the above technical solution, the screw conveyor actively feeds materials into the inner part of the outer cylinder, which is convenient for controlling the amount of materials entering the outer cylinder.

[0019] Optionally, the isolation cylinder is a circular cylindrical structure, and its diameter gradually increases from the end close to the outer cylinder to the end far from the outer cylinder.

[0020] By adopting the above technical solution, the gradually changing diameter of the isolation cylinder forms a funnel-shaped structure. On the one hand, it can guide the movement of the material box in the direction close to the rotating shaft, and on the other hand, it can guide the air in the discharge cavity to the side wall of the collection box, which is convenient for the discharge of air.

[0021] Optionally, the connecting piece includes a material flow part and a plug cylinder part. The plug cylinder part is located above the material flow part. The material flow hole is located at the corresponding position of the material flow part. A dredging component is arranged on the connecting piece. The dredging component includes a movable plug slidably matched in the plug cylinder part. One end of the connecting cylinder close to the rotating shaft is provided with a plugging component for plugging one end of the connecting piece close to the rotating shaft.

[0022] By adopting the above technical solution, during the material grinding process, when the material flow hole is blocked, or when the material has a bridging effect in the feeding cavity, the one end of the connecting cylinder close to the rotating shaft is blocked by the plugging component, and then the air inside the connecting piece is compressed by sliding the movable plug, so that the air can be ejected from the material flow hole. On the one hand, it can dredge the material flow hole, and on the other hand, the airflow impact on the material can destroy the structure of the material accumulation and reduce the phenomenon of material bridging.

[0023] Optionally, the plugging component includes a plugging plate, the plugging plate is rotatably connected to the connecting piece, rotating the plugging plate can make the plugging plate close to the connecting piece, and when the plugging plate is flush with the end face of the connecting piece, it can plug one end of the connecting piece close to the rotating shaft.

[0024] By adopting the above technical solution, by rotating the plugging plate, its proximity to or away from the opening of the connecting piece realizes the control of opening and closing the opening of the connecting piece.

[0025] Optionally, a linkage piece is arranged between the movable plug and the plugging plate. An elastic member is arranged between the movable plug and the linkage rod. Two ends of the elastic member are respectively connected to the linkage piece and the movable plug. One end of the linkage piece far from the elastic member extends towards the direction close to the plugging plate. Teeth are arranged on the plugging plate around its own rotation axis. A tooth groove meshing with the teeth is opened at the position of the linkage piece close to the plugging plate, and the movement of the movable plug can drive the rotation of the plugging plate.

[0026] By adopting the above technical solution, when the flow hole needs to be unblocked, the movement of the movable plug drives the blocking plate to automatically rotate to block the opening on the connecting piece. After the blocking plate blocks the connecting piece, the blocking plate no longer rotates. At this time, the movable plug moves to compress the spring to adapt to the movement of the movable plug. At the same time, the movable plug compresses the air inside the connecting piece, realizing the linkage between compressed air and blocking the opening of the connecting piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present application.

[0028] Figure 2 It is a schematic structural diagram of the stirring shaft of the first embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the structure of the dredging component of the second embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of the structure of the buffer component of the second embodiment of the present application.

[0032] Figure 6 It is a schematic diagram of the structure of the driving component of the second embodiment of the present application.

[0033] Figure 7 This is the second embodiment of the present application. Figure 5 Enlarged view of part A.

[0034] Figure 8 It is a schematic structural diagram of a blocking component according to the second embodiment of the present application.

[0035] Reference numerals: 1, outer cylinder; 11, air outlet; 12, feed inlet; 13, air supply hole; 2, stirring shaft; 21, rotating shaft; 22, spiral blade; 23, flow channel; 3, collecting box; 31, isolation cylinder; 32, feed chamber; 33, discharge chamber; 4, feed equipment; 5, driving member; 6, connecting member; 61, flow hole; 62, plug cylinder; 63, flow section; 7, dredging assembly; 71, movable plug; 72, driving assembly; 7 21. Sliding rod; 722. Sliding sleeve; 723. Rotating adaptor; 7231. Linear slide rod; 7232. Connecting column; 724. Pushing member; 725. Linking ring; 8. Sealing assembly; 81. Sealing plate; 82. Rotating rod; 83. Linking plate; 84. Buffer assembly; 841. Elastic member; 842. Abutting ring; 9. Detection assembly; 91. Sensor wheel; 92. Detection plate; 93. Toggle protrusion; 94. Elastic support block. DETAILED DESCRIPTION

[0036] The following is combined withFigure 1-8 Further details of this application will be described below.

[0037] An embodiment of this application discloses a spiral pulverizer.

[0038] Referring to Figure 1 and Figure 2 As shown in FIGS. and, a spiral pulverizer includes an outer cylinder 1 and a stirring shaft 2. The stirring shaft 2 is rotatably arranged in the outer cylinder 1 and is used for stirring the grinding balls filled in the outer cylinder 1. The outer cylinder 1 is provided with a feed inlet 12 and an air outlet 11, and the air outlet 11 is located at a position of the outer cylinder 1 away from the ground. The air outlet 11 is externally connected to an air extraction device for extracting the air inside the outer cylinder 1. During the use of the spiral pulverizer in this application, the material is directly placed in the outer cylinder 1 in a dry state. As the stirring shaft 2 rotates, the grinding balls and the material move and rub against each other. At the same time, the external air extraction device extracts air from the air outlet 11, generating gas flow inside the outer cylinder 1. Under the action of the gas, the powdered material is driven to suspend in the air and is transported to the outside of the outer cylinder 1 under the action of the air extraction device, so that the drying process is not required in the subsequent process, reducing the cost in the ore pulverizing process. In addition, during the use of the grinding device, the flow rate of the air inside the outer cylinder 1 can be controlled according to the air extraction rate of the air extraction device, so as to realize the discharge of materials with different particle sizes.

[0039] Referring to Figure 1 and Figure 2 As shown in FIGS. and, the stirring shaft 2 includes a rotating shaft 21 and spiral blades 22. The rotating shaft 21 is vertically arranged and is rotatably connected to the side wall of the inner part of the outer cylinder 1 away from the ground around its own axis. The spiral blades 22 are wound around the outside of the rotating shaft 21. The rotation of the rotating shaft 21 drives the rotation of the spiral blades 22 to realize the stirring of the materials inside the outer cylinder 1.

[0040] Referring to Figure 1 and Figure 2 As shown in FIGS. and, the outer cylinder 1 is further provided with an air supply hole 13 communicated with the inside of the outer cylinder 1, and the air supply hole 13 is externally connected to a blowing device for injecting air into the outer cylinder 1. During the use of the pulverizing device, air is injected into the outer cylinder 1 through the blowing device. The air enters the outer cylinder 1 from the air supply hole 13 and flows upward. During the flow of the air, it can carry the powdered material at the bottom upward, facilitating the discharge of the qualified ground material from the outer cylinder 1.

[0041] Referring to Figure 1 and Figure 2 As shown in FIGS. and, a collecting box 3 is arranged on one side of the outer cylinder 1 away from the ground. The collecting box 3 is fixed to the outer cylinder 1 by screws. The air outlet 11 is arranged on one side of the outer cylinder 1 close to the collecting box 3. A through hole corresponding to the air outlet 11 is opened on the collecting box 3 to communicate with the inside of the collecting box 3. The air extraction device is communicated with the inside of the collecting box 3. A plurality of air outlets 11 are evenly spaced around the axis of the rotating shaft 21 to improve the air discharge efficiency and enable the uniform discharge of the materials in the outer cylinder 1.

[0042] Refer to Figure 1 and Figure 2 On the rotating shaft 21, there is a material flow channel 23 running through along the length direction of the rotating shaft 21. The material flow channel 23 extends to the outside of the outer cylinder 1, and the end of the material flow channel 23 far from the ground forms a feed inlet 12. When materials are placed into the feed inlet 12, the materials can move along the length direction of the rotating shaft 21 of the through hole to the bottom of the outer cylinder 1, improving the effect of grinding and crushing the materials. Moreover, during the actual grinding process, the materials enter the outer cylinder 1 from the feed inlet 12 and fall to the bottom of the feed cylinder. Using the lifting force of the spiral blade 22, the materials at the bottom can move upward and rub against each other during the movement to achieve grinding. The whole process is smoother, effectively improving the overall production efficiency of the grinding equipment.

[0043] Refer to Figure 1 and Figure 2 Define the vertical distance between the side of the rotating shaft 21 close to the ground and the side wall of the inner side wall of the outer cylinder 1 close to the ground as L, and the value range of L is 5 cm - 10 cm. Controlling the distance between the rotating shaft 21 and the inner bottom wall of the outer cylinder 1 can, on the one hand, enable the materials to smoothly fall to the bottom of the outer cylinder 1, and on the other hand, ensure that the spiral blade 22 can smoothly drive the materials to rise.

[0044] Refer to Figure 1 and Figure 2 In the collection box 3, there is an isolation cylinder 31. The isolation cylinder 31 is a cylindrical structure with both ends open, and its two ends are respectively welded to the two side walls of the collection box 3 parallel to the ground. Under the action of the isolation cylinder 31, the internal cavity of the collection box 3 is divided into two parts. Among them, the part communicating with the feed inlet 12 is the feed cavity 32, and the part communicating with the exhaust hole is the discharge cavity 33. The isolation of feeding and discharging is realized. The isolation cylinder 31 is a circular cylindrical structure, and its diameter gradually increases from the end close to the outer cylinder 1 to the end far from the outer cylinder 1.

[0045] Refer to Figure 1 and Figure 2 The spiral mill also includes a feeding device 4. In this embodiment, the feeding device 4 is a screw conveyor, and the discharge port of the screw conveyor is communicated with the feed cavity 32, realizing the active feeding of materials and improving the flexibility during the feeding process.

[0046] Refer to Figure 1 and Figure 2 On the collection box 3, there is a driving member 5. The driving member 5 is connected to the rotating shaft 21 to drive the rotating shaft 21 to rotate. In this embodiment, the driving member 5 is an electric motor, and the output shaft of the electric motor is coaxially arranged with the rotating shaft 21 and connected to the rotating shaft 21, driving the rotating shaft 21 to rotate through the output shaft of the electric motor.

[0047] Refer to Figure 1 andFigure 2 A connecting member 6 is provided between the output shaft of the motor and the rotating shaft 21. The connecting member 6 is integrally in the shape of a cylindrical structure with one end open. The connecting member 6 is located in the feeding chamber 32. The opening of the connecting member 6 faces the rotating shaft 21 and is fixedly connected to the rotating shaft 21 coaxially. The inside of the connecting member 6 is communicated with the inside of the rotating shaft 21. A material flow hole 61 communicated with its own inside is provided on the side wall of the connecting member 6. The output shaft of the motor is fixedly connected to one end of the connecting member 6 away from the rotating shaft 21 coaxially, realizing the connection between the output shaft of the motor and the rotating shaft 21, and at the same time maintaining the communication between the inside of the rotating shaft 21 and the inside of the feeding chamber 32. In order to improve the efficiency of the material in the feeding chamber 32 entering the inside of the connecting member 6, a plurality of material flow holes 61 can be evenly arranged at intervals along the circumferential direction of the connecting member 6 to improve the feeding efficiency.

[0048] The implementation principle of a spiral pulverizer in an embodiment of the present application is as follows: Utilizing the gravity of the material itself, the material passes through the through hole and moves to the bottom of the outer cylinder 1, realizing the dry feeding of the material. By controlling the operation of the air extraction device, the ground material suspended in the air is discharged from the outer cylinder 1 along with the flow of the air current, so that the material does not need to go through the drying process subsequently, reducing the comprehensive cost of material grinding.

[0049] Embodiment 2

[0050] Referring to Figure 3 and Figure 4 In this embodiment, the difference from Embodiment 1 is that a dredging component 7 is provided on the connecting member 6 in this embodiment. The dredging component 7 includes a movable plug 71. In this embodiment, the connecting member 6 includes a material flow part 63 and a plug cylinder part 62, where the plug cylinder part 62 corresponds to the position where the material flow hole 61 is located. The plug cylinder part 62 is located above the material flow part 63, and no material flow hole 61 is provided on the plug cylinder part 62. The movable plug 71 is slidably fitted in the plug cylinder. A plugging component 8 is provided at one end of the connecting member 6 close to the ground. The plugging component 8 is used to control the plugging and opening of the opening of the internal space on the connecting member 6.

[0051] Referring to Figure 3 and Figure 4 During the normal grinding process, the material first enters the feeding chamber 32 and accumulates temporarily, and then flows out of the inside of the rotating shaft 21 through the flow hole. When the material has a bridging effect, the opening of the connecting member 6 can be plugged through the plugging component 8. At this time, the movable plug 71 is slid, and the gas between the movable plug 71 and the plugging component 8 is compressed and ejected from the material flow hole 61 to impact and stir the material, breaking the bridging effect of the material pile and improving the smoothness during the grinding process.

[0052] Referring to Figure 3 and Figure 4, the dredging component 7 further includes a driving component 72 provided on the collecting box 3 for driving the movement of the movable plug 71. The driving component 72 includes a sliding insertion rod 721. The sliding insertion rod 721 is arranged along a direction parallel to the sliding direction of the movable plug 71. One end of it is welded to the side of the movable plug 71 away from the ground, and the other end extends outside the connecting member 6. A relief hole is provided on the connecting member 6 corresponding to the sliding insertion rod 721, and the sliding insertion rod 721 slidably passes through the relief hole. Sliding the sliding insertion rod 721 outside the connecting member 6 can drive the movement of the movable plug 71, which is convenient for adjusting the position of the movable plug 71.

[0053] Referring to Figure 3 and Figure 4 , the driving component 72 further includes a sliding sleeve 722. The sliding sleeve 722 is slidably sleeved outside the output shaft of the motor along a direction parallel to the sliding direction of the movable plug 71. A plurality of sliding insertion rods 721 are evenly spaced around the axis of the connecting member 6. The end of the sliding insertion rod 721 away from the movable plug 71 is welded to the sliding sleeve 722. Sliding the movable plug 71 can drive the sliding of the sliding insertion rod 721, making the force on the movable plug 71 uniform during the movement and improving the stability of the movable plug 71 during the movement.

[0054] Referring to Figure 4 and Figure 5 , the driving component 72 further includes a rotation adaptor 723 and a pusher 724. The rotation adaptor 723 includes a linear slide rod 7231 and a connecting column 7232. The linear slide rod 7231 is slidably connected to the collecting box 3 and is located on one side of the sliding sleeve 722. The connecting column 7232 is arranged along the radial direction of the sliding sleeve 722. One end of it is welded to the linear slide rod 7231, and the other end extends towards the sliding sleeve 722. An annular groove coaxial with itself is provided on the outer side wall of the sliding sleeve 722. The end of the connecting column 7232 away from the linear slide rod 7231 is inserted into the annular groove and can move circumferentially along the annular groove. During the grinding process, the connecting member 6 rotates with the rotating shaft 21, and the connecting column 7232 slides relatively in the annular groove. The pusher 724 is used to drive the linear slide rod 7231 to move, realizing the driving of the linear slide rod 7231. In this embodiment, the pusher 724 is a cylinder.

[0055] Referring to Figure 4 and Figure 5 , a plurality of linear slide rods 7231 can be evenly spaced around the circumference of the sliding sleeve 722. In this embodiment, two are provided. The driving component 72 further includes a linkage ring 725. The linkage ring 725 is synchronously connected with a plurality of linear slide rods 7231 to realize the synchronous movement of the plurality of linear slide rods 7231.

[0056] Referring to Figure 6 and Figure 7, the plugging assembly 8 includes a plurality of plugging plates 81 evenly spaced along the circumference of the connecting member 6. The plugging plates 81 are sector-shaped structures. When the plurality of plugging plates 81 are located on the same horizontal plane, they can be assembled to form a complete plate-like structure, so as to plug the opening of the connecting member 6. Refer to Figure 2 , the plugging assembly 8 further includes a rotating rod 82. The rotating rod 82 is located on the side of the plugging plate 81 away from the connecting member 6. One end of the rotating rod 82 is rotatably connected to the connecting member 6, and the other end is welded to the plugging plate 81 to realize the rotational connection between the plugging plate 81 and the connecting member 6.

[0057] Refer to Figure 6 and Figure 8 , a linkage piece 83 is arranged between the plugging plates 81. The linkage piece 83 is arranged along the sliding direction of the sliding sleeve 722. The linkage piece 83 is located on the side of the plugging plate 81 away from the axis of the rotating shaft 21. A plurality of teeth are arranged on the rotating rod 82 along its own rotation axis. A tooth groove meshing with the teeth is formed on the side of the linkage piece 83 close to the plugging plate 81. The linkage piece 83 is connected to the sliding sleeve 722. When the sliding sleeve 722 moves downward, it drives the rotating rod 82 to rotate, and then makes the plugging plate 81 approach the opening of the connecting member 6 to plug the opening of the connecting member 6. At the same time, the movable plug 71 moves synchronously to squeeze the air inside the connecting member 6 to dredge the convection material hole 61.

[0058] Refer to Figure 5 and Figure 6 , a buffer assembly 84 is arranged between the linkage piece 83 and the sliding sleeve 722. The buffer assembly 84 includes an elastic member 841 and an abutting ring 842. The abutting ring 842 is sleeved outside the output shaft of the motor and is synchronously connected to a plurality of linkage pieces 83. The elastic member 841 is arranged between the abutting ring 842 and the sliding sleeve 722 and is used to apply a force to the abutting ring 842 to make the abutting ring 842 move away from the sliding sleeve 722. In this embodiment, the elastic member 841 is a spring. The spring is sleeved outside the output shaft of the motor and abuts against the abutting ring 842 and the sliding sleeve 722 at both ends respectively. During the downward movement of the sliding sleeve 722, it first drives the plugging plate 81 to rotate. After the plugging plate 81 abuts against the end face of the connecting member 6 close to the ground, it stops moving. At this time, the sliding sleeve 722 continues to move downward, the spring is compressed, and at the same time, the movable plug 71 can continue to move to compress the air inside the connecting member 6.

[0059] Refer to Figure 6 and Figure 7, a detection component 9 is also provided on the connecting member 6, and the detection component 9 is used to detect the blockage of the flow hole 61. The detection component 9 includes a sensor wheel 91 and a detection sheet 92. The sensor wheel 91 is a cylindrical structure, which is coaxially arranged with the rotation axis of the rotating rod 82 and fixedly connected to the rotating rod 82. The rotation of the blocking plate 81 can drive the sensor wheel 91 to rotate. The detection sheet 92 is a rectangular sheet structure as a whole, which is arranged along the radial direction of the sensor wheel 91, and one end is fixed on the connecting member 6, and the other end extends in the direction close to the sensor wheel 91. The detection sheet 92 includes a piezoelectric ceramic layer and an elastic layer. The elastic layer is made of a material having an elastic member 841. The deformation of the elastic layer can cause the deformation of the ceramic layer. The deformation of the ceramic layer can produce a piezoelectric effect, causing a change in the voltage across the piezoelectric ceramic layer, and then generating current. A plurality of toggling protrusions 93 are arranged on the side wall of the sensor wheel 91 and are spaced apart along the circumference of the sensor wheel 91 . During the rotation of the sensor wheel 91 , the toggling protrusions 93 can toggle the detection sheet 92 , thereby causing the detection sheet 92 to vibrate and generate current inside the detection sheet 92 .

[0060] Reference Figure 6 and Figure 7 , the detection assembly 9 also includes an elastic support block 94, which is arranged below the blocking plate 81 and fixedly connected to the connecting member 6. The blocking plate 81 rotates downward and can abut against the elastic support block 94. The elastic support block 94 supports the blocking plate 81 and blocks the movement of the blocking plate 81. When the blocking plate 81 abuts against the elastic support block 94, the material can hit the blocking plate 81 away from the rotating rod 82 during the flow from the flow hole to the inside of the rotating shaft 21, causing the blocking plate 81 to rotate, thereby causing the detection sheet 92 to generate current. The current generated by the detection sheet 92 can determine the flow of the material, and then reflect the blocking condition of the flow hole 61. In addition, during the normal flow of the material, the blocking plate 81 has a tendency to rotate downward after being subjected to force, and the elastic support block 94 is compressed and gives the blocking plate 81 a rebound force, causing the blocking plate 81 to reciprocate within a certain range during the flow of the material, so that the detection sheet 92 continuously generates a current of a certain intensity.

[0061] The spiral mill also includes a control system, which includes a current detection module, a timing module and an information processing module. The current detection module detects the current of the detection sheet 92, and the information processing module receives information from the current motor module to determine whether the material enters the rotating drum normally. The specific detection method is as follows:

[0062] S1: The current detection module inside the industrial computer detects whether the detection piece 92 generates current. If current is generated, it is determined that the material flows normally into the rotating shaft 21.

[0063] S2: If the current detection module does not detect the current of the detection piece 92, it is determined that the flow hole 61 is blocked.

[0064] S3: After determining that the material flow hole 61 is blocked, the timing module inside the industrial control computer starts timing. When no current is detected after 5 seconds of timing, control the movement of the cylinder or oil cylinder to compress the air inside the connector 6 to dredge the flow hole.

[0065] The implementation principle of a spiral mill in an embodiment of this application is as follows: During the process of material grinding, when the material flow hole 61 is blocked, the movable plug 71 squeezes the air inside the connector 6, causing the air to spray out from the material flow hole 61, achieving the dredging of the material flow hole 61, and at the same time being able to destroy the structure of the accumulated material and reduce the occurrence of the bridging effect.

[0066] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A spiral grinding machine, comprising an outer cylinder (1) and a stirring shaft (2) rotatably arranged inside the outer cylinder (1), characterized in that: The outer cylinder (1) is provided with an air outlet (11), the air outlet (11) is located at a position of the outer cylinder (1) away from the ground and is connected to an external exhaust device, the stirring shaft (2) comprises a rotating shaft (21) and a spiral blade (22) wound around the rotating shaft (21), the rotating shaft (21) is rotatably connected to the outer cylinder (1), a through hole is provided inside the rotating shaft (21) and penetrates along its length direction, and an end of the rotating shaft (21) away from the ground extends to the outside of the outer cylinder (1); A plurality of air outlets (11) are evenly spaced along the circumference of the outer cylinder (1); a collecting box (3) is provided on the outer cylinder (1); and the collecting box (3) is in communication with the plurality of air outlets (11); An isolation cylinder (31) is provided inside the collection box (3), and two ends of the isolation cylinder (31) are respectively connected to two mutually parallel inner side walls of the collection box (3), so as to divide the internal space of the collection box (3) into a discharge chamber (33) connected to the air outlet (11) and a feed chamber (32) connected to a through hole on the rotating shaft (21); A connecting piece (6) is provided in the feed cavity (32), and a flow hole (61) communicating with the interior of the connecting piece (6) is provided on a side wall of the connecting piece (6); The connecting member (6) comprises a material flow portion (63) and a plug barrel portion (62), the plug barrel portion (62) being located above the material flow portion (63), the material flow hole (61) being located at a position corresponding to the material flow portion (63), the connecting member (6) being provided with a dredging assembly (7), the dredging assembly (7) comprising a movable plug (71) slidably fitted in the plug barrel portion (62), and a blocking assembly (8) for blocking the end of the connecting member (6) close to the rotating shaft (21); The blocking assembly (8) comprises a blocking plate (81); A linkage piece (83) is provided between the movable plug (71) and the blocking plate (81), an elastic member (841) is provided between the movable plug (71) and the linkage rod, two ends of the elastic member (841) are respectively connected to the linkage piece (83) and the movable plug (71), one end of the linkage piece (83) away from the elastic member (841) extends in a direction close to the blocking plate (81), the blocking plate (81) is provided with teeth around its own rotation axis, and a tooth groove meshing with the teeth is provided on the linkage piece (83) at a position close to the blocking plate (81), and the movement of the movable plug (71) can drive the blocking plate (81) to rotate; The connecting piece is also provided with a detection assembly, which is used to detect the blockage of the flow hole; the detection assembly includes a sensor wheel and a detection sheet, the sensor wheel is a cylindrical structure, which is coaxially arranged with the rotation axis of the rotating rod and fixedly connected with the rotating rod; the rotation of the blocking plate can drive the sensor wheel to rotate; the detection sheet is a rectangular sheet structure as a whole, which is arranged along the radial direction of the sensor wheel, and one end is fixed on the connecting piece, and the other end extends in the direction close to the sensor wheel; the detection sheet includes a piezoelectric ceramic layer and an elastic layer; A toggle protrusion is arranged on the side wall of the sensor wheel, and a plurality of toggle protrusions are arranged at intervals along the circumference of the sensor wheel. During the rotation of the sensor wheel, the toggle protrusion can toggle the detection piece, thereby causing the detection piece to vibrate and generating current inside the detection piece; The detection assembly also includes an elastic support block, which is arranged below the blocking plate and fixedly connected to the connecting piece; The blocking plate rotates downward and can abut against the elastic support block. The elastic support block supports the blocking plate and blocks the movement of the blocking plate. When the blocking plate abuts against the elastic support block, the material can flow from the flow hole to the inside of the rotating shaft and hit the blocking plate at a position away from the rotating rod, causing the blocking plate to rotate, thereby generating current in the detection sheet.

2. A spiral grinding machine according to claim 1, characterized in that: The outer cylinder (1) is provided with an air supply hole (13), and the air supply hole (13) is located at a position of the outer cylinder (1) close to the ground.

3. A spiral grinding machine according to claim 1, characterized in that: The interior of the connecting member (6) is hollow and an opening communicating with a through hole of the rotating shaft (21) is provided at one end close to the rotating shaft (21); a servo motor is provided at a side of the connecting member (6) away from the rotating shaft (21); an output shaft of the servo motor is connected to the connecting member (6).

4. A spiral grinding mill according to claim 1, characterized in that: The isolation cylinder (31) is a circular cylindrical structure, the diameter of which gradually increases from an end close to the outer cylinder (1) to an end far from the outer cylinder (1).

5. A spiral grinding mill according to claim 1, characterized in that: The blocking plate (81) is rotatably connected to the connecting member (6); the blocking plate (81) can be rotated to bring the blocking plate (81) closer to the connecting member (6); and when the blocking plate (81) is flush with the end surface of the connecting member (6), the end of the connecting member (6) closer to the rotating shaft (21) can be blocked.

6. A spiral grinding mill according to claim 5, characterized in that: The blocking plate (81) is provided with a sensing wheel (91), and the connecting member (6) is provided with a detection sheet (92). The blocking plate (81) can drive the sensing wheel (91) to rotate when it rotates, and the sensing wheel (91) can move the detection sheet (92) to deform the detection sheet (92). The deformation of the detection sheet (92) can generate current, and when the material flows into the through hole of the rotating shaft (21), it can hit the blocking plate (81).

Images