Spiral flour mill

Abstract

The invention relates to the field of grinding equipment, in particular to a spiral pulverizer which comprises an outer cylinder and a stirring shaft rotationally arranged in the outer cylinder, an air outlet is formed in the outer cylinder, and the air outlet is located in the position, away from the ground, of the outer cylinder and connected with external air draft equipment. The stirring shaft comprises a rotating shaft and a spiral blade wound on the rotating shaft, the rotating shaft is rotationally connected to the outer cylinder, a through hole penetrating in the length direction of the rotating shaft is formed in the rotating shaft, and the end, away from the ground, of the rotating shaft extends out of the outer cylinder. The method has the effect of reducing the comprehensive cost in the grinding process.

Description

Technical Field

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

[0002] Common grinding equipment mainly includes Raymond mill, vertical mill, ball mill and other grinding equipment. When producing powders below 200 mesh, the performance of the above grinding equipment is not much different. However, when it is necessary to produce powder materials above 200 mesh, the performance of the above grinding equipment will be greatly reduced, the production capacity is low, and the power consumption is high.

[0003] The spiral mill, also known as the tower mill, has higher production efficiency and larger output when producing finer powders than the above-mentioned grinding equipment, and consumes less power. It mainly includes an outer cylinder and a spiral stirring blade arranged in the outer cylinder. The outer cylinder is filled with friction parts (usually steel balls), and the spiral stirring blade is driven to rotate by a motor. During the material crushing and grinding process, the spiral blade rotates, and the steel balls and mixed materials rub against each other to achieve the grinding of the materials. Usually, after the materials are mixed with clean water, a mortar pump is used to inject the materials into the outer cylinder from the bottom of the outer cylinder to achieve feeding (also known as wet feeding).

[0004] In the wet feeding method, the raw materials to be ground are fed with water as the medium, and the raw materials and water are pumped into the mill using a slurry pump, and the ground materials are taken out for particle sorting. Although it is relatively simple, the materials need to be dried later, the process is relatively complicated, and the production cost is high. Summary of the invention

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

[0006] The present application provides a spiral grinding machine adopting the following technical solution: A spiral grinding machine comprises an outer cylinder and a stirring shaft rotatably arranged inside the outer cylinder, an air outlet is arranged on the outer cylinder, the air outlet is located at a position of the outer cylinder away from the ground and is connected to an external exhaust device, the stirring shaft comprises 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 is arranged inside the rotating shaft and penetrates along the length direction of the rotating shaft, and one end of the rotating shaft away from the ground extends to the outside of the outer cylinder.

[0007] By adopting the above technical solution, the rotating shaft extends to the inside of the outer cylinder, and the hole running through the inner part of the outer cylinder connects the outer cylinder 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, thereby realizing the feeding. The spiral blades are then used to stir and rub the material to achieve the grinding of the material. After grinding, the qualified fine powder material is suspended in the air and can be extracted by external exhaust equipment. Since there is no need to contact the pressure of water during the feeding process, the feeding is convenient, and the subsequent drying process is avoided, thereby reducing the comprehensive cost of material grinding.

[0008] Optionally, an air supply hole is provided on the outer cylinder, and the air supply hole is located at a position of the outer cylinder close to the ground.

[0009] By adopting the above technical solution, during the grinding process, the air supply hole is connected to an external blowing device to allow the air flow to enter the outer cylinder and move 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 of the exhaust equipment.

[0010] Optionally, a plurality of the air outlet holes are evenly spaced along the circumference of the outer cylinder, and a collecting box is provided on the outer cylinder, and the collecting box is connected to the plurality of air outlet holes.

[0011] By adopting the above technical solution, during the use of the grinding mill, the exhaust device is connected to the inside of the collecting box, so that the exhaust device can simultaneously extract air from multiple air outlets, thereby improving the discharge efficiency.

[0012] Optionally, an isolation cylinder is provided inside the collecting box, and both ends of the isolation cylinder are respectively connected to two mutually parallel inner walls of the collecting box, dividing the internal space of the isolation cylinder into a discharge chamber connected to the air outlet and a feed chamber connected to the through hole on the rotating shaft.

[0013] By adopting the above technical solution, the collecting box is divided by the isolation tube, 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, which is convenient for loading.

[0014] Optionally, a connecting piece is provided in the feed chamber, the interior of the connecting piece is hollow and an opening connected to the through hole of the rotating shaft is provided at one end close to the rotating shaft, an electric motor is provided on the side of the connecting piece away from the rotating shaft, the output shaft of the motor is connected to the connecting piece, and a flow hole connected to the interior of the connecting piece is provided on the side wall of the connecting piece.

[0015] By adopting the above technical solution, the motor is connected to the rotating shaft through the connecting piece to drive the rotating shaft. At the same time, the flow hole on the connecting piece is used to ensure that the material can smoothly enter the rotating shaft.

[0016] Optionally, a feeding device is also included, and the feeding device is a screw conveyor, and the discharge port of the screw conveyor is connected to the feeding cavity.

[0017] By adopting the above technical solution, the material is actively fed into the outer cylinder through the screw conveyor, so that the amount of material entering the outer cylinder can be controlled.

[0018] Optionally, the isolation cylinder is a circular cylindrical structure, and its diameter gradually increases from one end close to the outer cylinder to one end far away from the outer cylinder.

[0019] By adopting the above technical solution, the diameter of the isolation cylinder gradually changes to form a funnel-shaped structure, which can guide the material box to move closer to the rotating shaft on the one hand, and guide the air in the discharge chamber to move toward the side wall of the collection box on the other hand, so as to facilitate the discharge of air.

[0020] Optionally, the connecting member includes a flow portion and a plug barrel portion, the plug barrel portion is located above the flow portion, the flow hole is located at a position corresponding to the flow portion, the connecting member is provided with a clearing assembly, the clearing assembly includes a movable plug slidably fitted in the plug barrel portion, and a sealing assembly is provided at one end of the connecting barrel close to the rotating shaft for sealing the end of the connecting member close to the rotating shaft.

[0021] By adopting the above technical solution, during the material grinding process, when the flow hole is blocked or the material has a bridging effect in the feed chamber, the end of the connecting tube close to the rotating shaft is blocked by the sealing component, and then the air inside the connecting piece is compressed by the sliding movable plug, so that the air can be ejected from the flow hole. On the one hand, the flow hole can be unblocked, and on the other hand, the airflow impacting the material can destroy the structure of the material accumulation and reduce the phenomenon of material bridging.

[0022] Optionally, the blocking assembly includes a blocking plate, which is rotatably connected to the connecting member. Rotating the blocking plate can bring the blocking plate close to the connecting member, and when the blocking plate is flush with the end surface of the connecting member, the end of the connecting member close to the rotating shaft can be blocked.

[0023] By adopting the above technical solution, the opening and closing of the connecting piece opening can be controlled by rotating the blocking plate to make it close to or away from the opening of the connecting piece.

[0024] Optionally, a connecting piece is provided between the movable plug and the sealing plate, and an elastic member is provided between the movable plug and the linkage rod, the two ends of the elastic member are respectively connected to the connecting piece and the movable plug, and the end of the connecting piece away from the elastic member extends toward the direction close to the sealing plate, and the sealing plate is provided with teeth around its own rotation axis, and a tooth groove meshing with the teeth is provided on the connecting piece near the sealing plate, and the movement of the movable plug can drive the sealing plate to rotate.

[0025] 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

[0026] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present application.

[0027] Figure 2 It is a schematic structural diagram of the stirring shaft of the first embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the structure of the dredging component of the second embodiment of the present application.

[0030] Figure 5 It is a schematic diagram of the structure of the buffer component of the second embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of the structure of the driving component of the second embodiment of the present application.

[0032] Figure 7 This is the second embodiment of the present application. Figure 5 Enlarged view of part A.

[0033] Figure 8 It is a schematic structural diagram of a blocking component according to the second embodiment of the present application.

[0034] 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

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] The embodiment of the present application discloses a spiral grinding machine.

[0037] Reference Figure 1 and Figure 2 , a spiral grinding machine comprises an outer cylinder 1 and a stirring shaft 2. The stirring shaft 2 is rotatably arranged in the outer cylinder 1, and is used to stir the grinding balls filled in the outer cylinder 1. The outer cylinder 1 is provided with a feed port 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 exhaust device, and is used to extract the air inside the outer cylinder 1. During the use of the spiral grinding machine in the present application, the material is directly placed in the outer cylinder 1 in a dry state, and as the stirring shaft 2 rotates, the grinding balls and the material move and rub. At the same time, the external exhaust device extracts air from the air outlet 11, and a gas flow is generated inside the outer cylinder 1. Under the action of the gas, the powdered material is suspended in the air, and is transported to the outside of the outer cylinder 1 under the action of the exhaust device, so that there is no need to perform a drying process in the subsequent process, thereby reducing the cost of the ore grinding 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 exhaust rate of the exhaust device, so as to achieve the discharge of materials of different particle sizes.

[0038] Reference Figure 1 and Figure 2 The stirring shaft 2 includes a rotating shaft 21 and a spiral blade 22. The rotating shaft 21 is vertically arranged and rotates around its own axis and is connected to the side wall of the outer cylinder 1 away from the ground. The spiral blade 22 is wound around the outside of the rotating shaft 21. The rotation of the rotating shaft 21 drives the spiral blade 22 to rotate, thereby stirring the material in the outer cylinder 1.

[0039] Reference Figure 1 and Figure 2 The outer cylinder 1 is also provided with an air supply hole 13 connected to the inside of the outer cylinder 1. The air supply hole 13 is connected to an external blowing device for injecting air into the outer cylinder 1. During the use of the grinding device, air is injected into the outer cylinder 1 through the blowing device. The air enters the outer cylinder 1 through the air supply hole 13 and flows upward. During the air flow, the powdered material at the bottom can be carried upward, so that the qualified materials can be discharged from the outer cylinder 1.

[0040] Reference Figure 1 and Figure 2 A collection box 3 is provided on the side of the outer cylinder 1 facing away from the ground, and the collection box 3 is fixed to the outer cylinder 1 by screws. An air outlet 11 is provided on the side of the outer cylinder 1 close to the collection box 3, and a through hole is provided on the collection box 3 corresponding to the air outlet 11, so that it is connected with the inside of the collection box 3. The exhaust device is connected with the inside of the collection box 3, and multiple air outlets 11 are evenly spaced around the axis of the rotating shaft 21 to improve the efficiency of air discharge and enable the material in the outer cylinder 1 to be discharged evenly.

[0041] Reference Figure 1 and Figure 2 , a flow channel 23 is provided on the rotating shaft 21 and runs through the length direction of the rotating shaft 21. The flow channel 23 extends to the outside of the outer cylinder 1, and the end of the flow channel 23 away from the ground forms a feed port 12. When the material is placed in the feed port 12, the material can move to the bottom of the outer cylinder 1 along the length direction of the rotating shaft 21 of the through hole, thereby improving the effect of material grinding and crushing. Moreover, in the actual grinding process, the material enters the outer cylinder 1 from the feed port 12 and falls to the bottom of the feed cylinder. By utilizing the lifting force of the spiral blades 22, the material at the bottom can move upward, and grind by mutual friction during the movement. The whole process is smoother, which effectively improves the overall production efficiency of the grinding equipment.

[0042] Reference Figure 1 and Figure 2 , define the vertical distance between the side of the rotating shaft 21 close to the ground and the inner side wall of the outer cylinder 1 close to the ground as L, and the value range of L is 5cm-10cm. Controlling the distance between the rotating shaft 21 and the inner bottom wall of the outer cylinder 1 allows the material to fall smoothly to the bottom of the outer cylinder 1 on the one hand, and ensures that the spiral blades 22 can smoothly drive the material to be lifted on the other hand.

[0043] Reference Figure 1 and Figure 2 , an isolation cylinder 31 is provided in the collection box 3. The isolation cylinder 31 is a cylindrical structure with two 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, of which the feed cavity 32 is connected to the feed port 12. The discharge cavity 33 is connected to the exhaust hole. The isolation of feeding and discharging is achieved. 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 away from the outer cylinder 1.

[0044] Reference Figure 1 and Figure 2 The spiral grinding machine also includes a feeding device 4. In this embodiment, the feeding device 4 is a screw conveyor. The discharge port of the screw conveyor is connected to the feeding chamber 32 to realize active feeding of materials and improve flexibility in the feeding process.

[0045] Reference Figure 1 and Figure 2 A driving member 5 is provided on the collecting box 3, and the driving member 5 is connected to the rotating shaft 21 for driving the rotating shaft 21 to rotate. In this embodiment, the driving member 5 is a motor, and the output shaft of the motor is coaxially arranged with the rotating shaft 21 and connected to the rotating shaft 21, and the rotating shaft 21 is driven to rotate by the output shaft of the motor.

[0046] Reference Figure 1 and Figure 2 A connector 6 is provided between the output shaft of the motor and the rotating shaft 21, and the connector 6 is a cylindrical structure with one end open. The connector 6 is located in the feed chamber 32, and the opening of the connector 6 faces the rotating shaft 21 and is coaxially fixedly connected with the rotating shaft 21. The interior of the connector 6 is connected with the interior of the rotating shaft 21. A flow hole 61 connected with the interior of the connector 6 is provided on the side wall. The output shaft of the motor is coaxially fixedly connected to one end of the connector 6 away from the rotating shaft 21, so as to realize the connection between the output shaft of the motor and the rotating shaft 21, while maintaining the connection between the interior of the rotating shaft 21 and the interior of the feed chamber 32. In order to improve the efficiency of the material in the feed chamber 32 entering the interior of the connector 6, a plurality of flow holes 61 can be evenly spaced along the circumference of the connector 6 to improve the feeding efficiency.

[0047] The implementation principle of the spiral grinding machine in the embodiment of the present application is: using the gravity of the material itself, the material moves through the through hole to the bottom of the outer cylinder 1, so as to realize dry feeding of the material. By controlling the operation of the exhaust device, the ground qualified material suspended in the air is discharged from the outer cylinder 1 along with the flow of the airflow, so that the material does not need to go through the drying process later, thereby reducing the comprehensive cost of material grinding.

[0048] Example 2 Reference Figure 3 and Figure 4 , the difference between this embodiment and embodiment 1 is that in this embodiment, a dredging assembly 7 is provided on the connecting member 6. The dredging assembly 7 includes a movable plug 71. In this embodiment, the connecting member 6 includes a flow portion 63 and a plug barrel portion 62, wherein the plug barrel portion 62 corresponds to the position of the flow hole 61. The plug barrel portion 62 is located above the flow portion 63, and the flow hole 61 is not provided on the plug barrel portion 62. The movable plug 71 is slidably fitted in the plug barrel. A plugging assembly 8 is provided at one end of the connecting member 6 close to the ground, and the plugging assembly 8 is used to control the blocking and opening of the internal space opening on the connecting member 6.

[0049] Reference Figure 3 and Figure 4 In the normal grinding process, the material first enters the feed chamber 32 for temporary accumulation, and then flows out 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 blocked by the blocking component 8. At this time, the movable plug 71 is slid, and the gas between the movable plug 71 and the blocking component 8 is compressed and ejected from the flow hole 61 to impact and stir the material, destroying the bridging effect of the material pile and improving the smoothness of the grinding process.

[0050] Reference Figure 3 and Figure 4The dredging assembly 7 also includes a driving assembly 72 disposed on the collection box 3 for driving the movable plug 71 to move. The driving assembly 72 includes a sliding rod 721, which is disposed in a direction parallel to the sliding direction of the movable plug 71, one end of which is welded to the side of the movable plug 71 away from the ground, and the other end extends to the outside of the connecting member 6. An avoidance hole is provided on the connecting member 6 corresponding to the sliding rod 721, and the sliding rod 721 is slidably inserted into the avoidance hole. Sliding the sliding rod 721 outside the connecting member 6 can drive the movable plug 71 to move, so as to facilitate the adjustment of the position of the movable plug 71.

[0051] Reference Figure 3 and Figure 4 The driving assembly 72 further includes a sliding sleeve 722, which is arranged outside the output shaft of the motor in a direction parallel to the sliding direction of the movable plug 71. A plurality of sliding rods 721 are evenly spaced around the axis of the connecting member 6, and one end of the sliding rod 721 away from the movable plug 71 is welded to the sliding sleeve 722. The sliding movable plug 71 can drive the sliding rod 721 to slide, so that the movable plug 71 is subjected to uniform force during movement, thereby improving the stability of the movable plug 71 during movement.

[0052] Reference Figure 4 and Figure 5 The driving assembly 72 also includes a rotating adaptor 723 and a pusher 724. The rotating adaptor 723 includes a linear slide 7231 and a connecting column 7232. The linear slide 7231 is slidably connected to the collection 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 which is welded to the linear slide 7231, and the other end extends in the direction close to the sliding sleeve 722. An annular groove coaxial with the sliding sleeve 722 is provided on the outer wall of the sliding sleeve 722. The end of the connecting column 7232 away from the linear slide 7231 is inserted into the annular groove and can move relatively along the circumferential direction of 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 7231 to move, so as to drive the linear slide 7231. In this embodiment, the pusher 724 is a cylinder.

[0053] Reference Figure 4 and Figure 5 The linear slide bars 7231 can be evenly spaced along the circumference of the sliding sleeve 722, and two linear slide bars 7231 are provided in this embodiment. The driving assembly 72 also includes a linkage ring 725, which is synchronously connected with the multiple linear slide bars 7231 to achieve synchronous movement of the multiple linear slide bars 7231.

[0054] Reference Figure 6 and Figure 7The plugging assembly 8 includes a plurality of plugging plates 81 evenly spaced along the circumference of the connector 6. The plugging plates 81 are fan-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-shaped structure, thereby plugging the opening of the connector 6. Figure 2 The blocking assembly 8 also includes a rotating rod 82, which is located on the side of the blocking 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 blocking plate 81 to achieve a rotating connection between the blocking plate 81 and the connecting member 6.

[0055] Reference Figure 6 and Figure 8 A linking piece 83 is provided between the blocking plate 81 and the blocking plate 81. The linking piece 83 is provided along the sliding direction of the sliding sleeve 722. The linking piece 83 is located on the side of the blocking plate 81 away from the axis of the rotating shaft 21. A plurality of teeth are provided on the rotating rod 82 around its own rotating axis. A tooth groove meshing with the teeth is provided on the side of the linking piece 83 close to the blocking plate 81. The linking piece 83 is connected to the sliding sleeve 722. The sliding sleeve 722 moves downward, driving the rotating rod 82 to rotate, thereby making the blocking plate 81 close to the opening of the connecting member 6 to block 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 achieve the dredging of the flow hole 61.

[0056] Reference Figure 5 and Figure 6 , a buffer assembly 84 is arranged between the linking piece 83 and the sliding sleeve 722, and the buffer assembly 84 includes an elastic member 841 and an abutting ring 842, and the abutting ring 842 is sleeved outside the output shaft of the motor and synchronously connected with the plurality of linking 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 in a direction away from the sliding sleeve 722. In this embodiment, the elastic member 841 is a spring, and the spring sleeve is arranged outside the output shaft of the motor, and the two ends are respectively abutted against the abutting ring 842 and the sliding sleeve 722. In the process of the sliding sleeve 722 moving downward, the blocking plate 81 is first driven to rotate, and the blocking plate 81 abuts against the end surface of the connecting member 6 close to the ground and stops moving. At this time, the sliding sleeve 722 continues to move downward, the spring is compressed, and the movable plug 71 can continue to move to compress the air inside the connecting member 6.

[0057] Reference 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 .

[0058] 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.

[0059] 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: 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.

[0060] 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.

[0061] S3: After determining that the flow hole 61 is blocked, a timing module inside the industrial computer starts timing. If no current is detected after 5 seconds, the air cylinder or oil cylinder is controlled to move to compress the air inside the connector 6 to clear the flow hole.

[0062] The implementation principle of a spiral grinding machine in an embodiment of the present application is as follows: during the material grinding process, when the flow hole 61 is blocked, the air inside the connecting member 6 is squeezed by the movable plug 71, so that the air is ejected from the flow hole 61, thereby unblocking the flow hole 61 and destroying the structure of material accumulation, thereby reducing the bridging effect.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A 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 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).

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: A plurality of air outlet holes 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 connected to the plurality of air outlet holes.

4. A spiral grinding mill according to claim 3, characterized in that: 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 that the internal space of the isolation cylinder (31) is divided into a discharge chamber (33) connected to the air outlet hole and a feed chamber (32) connected to the through hole on the rotating shaft (21).

5. A spiral grinding mill according to claim 4, characterized in that: A connecting piece (6) is provided in the feed cavity (32); the connecting piece (6) is hollow inside 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 motor is provided at a side of the connecting piece (6) away from the rotating shaft (21); an output shaft of the motor is connected to the connecting piece (6); 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).

6. A spiral grinding mill according to claim 5, characterized in that: It also includes a feeding device (4), which is a screw conveyor, and the discharge port of the screw conveyor is connected to the feeding cavity (32).

7. A spiral grinding mill according to claim 5, 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).

8. A spiral grinding mill according to claim 5, characterized in that: 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 an end of the connecting member (6) close to the rotating shaft (21).

9. A spiral grinding mill according to claim 8, characterized in that: The blocking assembly (8) comprises a blocking plate (81), the blocking plate (81) being rotatably connected to the connecting member (6); the blocking plate (81) being rotated so that the blocking plate (81) is close to the connecting member (6); and when the blocking plate (81) is flush with the end surface of the connecting member (6), an end of the connecting member (6) close to the rotating shaft (21) can be blocked.

10. A spiral grinding mill according to claim 9, characterized in that: 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), teeth are provided on the blocking plate (81) around its own rotation axis (21), 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.

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