A sulfur paste feeding system

Abstract

The present invention provides a sulfur paste feeding system, including: a ton bag unpacking machine, which is used to automatically unpack ton bags; a sulfur paste screening and preliminary crushing device, which is used to screen and preliminarily crush the unpacked sulfur paste; a buffer bin, in which the preliminarily crushed sulfur paste is transported into the buffer bin by a pipe chain conveyor 1; a secondary crushing device, in which the sulfur paste in the buffer bin is transported into a secondary crushing device by a pipe chain conveyor 2 for secondary crushing; a feeding and metering device, which is used to measure the quality of the sulfur paste output by the secondary crushing device. The system of the present invention can process ton bags of sulfur paste into sulfur powder with a diameter of ≤1mm through the main steps of bag breaking, patting, screening, crushing, weighing and metering, and with safety measures such as dust removal, static electricity removal, and nitrogen filling protection, and the output process is uniform and stable, and the quality of the output material can be continuously measured, which is convenient for use in subsequent processes.

Description

Technical Field

[0001] The invention relates to the technical field of sulfur paste feeding, and in particular to a sulfur paste feeding system. Background Art

[0002] The function of the automatic unpacking and feeding device is to convert ton bags of sulfur paste into sulfur powder after a series of treatments. Currently, there are only devices on the market that can process solid materials into powder, and the solid materials processed are not sulfur paste, and the processing flow cannot meet the use requirements. In general, there is no similar function on the market, that is, a device that can convert ton bags of sulfur paste into sulfur powder. Summary of the invention

[0003] The invention provides a sulfur paste feeding system, which is used to solve the problem that there is no device for converting ton bags of sulfur paste into sulfur powder.

[0004] In order to solve the above technical problems, the present invention discloses a sulfur paste feeding system, comprising:

[0005] Ton bag unpacking machine, used for automatic unpacking of ton bags;

[0006] Sulfur paste screening and preliminary crushing device, used for screening and preliminary crushing of unpacked sulfur paste;

[0007] Buffer bin: the initially crushed sulfur paste is transported into the buffer bin by a tube chain conveyor;

[0008] Secondary crushing device: the sulfur paste in the buffer bin is transported to the secondary crushing device by the second pipe chain conveyor for secondary crushing;

[0009] The feeding and metering device is used to measure the mass of the sulfur paste output from the secondary crushing device.

[0010] Preferably, the ton bag unpacking machine comprises:

[0011] A machine body, a sealing cover is installed on the outside of the machine body, and a door is arranged on one side of the machine body;

[0012] An electric hoist, which is horizontally movably mounted on the upper end of the machine body and is used to lift ton bags. The electric hoist can be moved into the machine body, or moved through the warehouse door to the outside of the machine body;

[0013] A cutting knife, which is installed in the machine body and located on one side below the electric hoist, and is used to puncture and unpack the ton bag;

[0014] A beating system, which is installed in the machine body and located above the cutting knife, and is used to beat the ton bag after the cutting knife punctures the ton bag;

[0015] The dust removal device is installed on the machine body.

[0016] Preferably, the sulfur paste screening and preliminary crushing device comprises:

[0017] A screening system is installed in the machine body and is located directly below the cutting knife;

[0018] A breaking system is installed in the machine body and is located directly below the screening system. The sulfur paste with unqualified diameter is screened by the screening system and enters the breaking system for preliminary crushing.

[0019] A bottom silo is installed at the bottom of the body, and the sulfur paste with qualified diameter is screened by the screening system to enter the bottom silo. The feed port of the bottom silo is also connected with the discharge port of the disintegration system, and the discharge port of the bottom silo is connected with the feed end of the first output of the tube chain conveyor, and the discharge end of the first output of the tube chain conveyor is connected with the feed port of the buffer bin;

[0020] The secondary crushing device is a four-roll crusher, the discharge port of the buffer bin is connected to the feed end of the second output of the tube chain conveyor, and the discharge end of the second output of the tube chain conveyor is connected to the feed port of the four-roll crusher;

[0021] The feeding and metering device comprises: a feeder and a belt scale, the feeding end of the feeder is connected to the discharge port of the secondary crushing device, and the belt scale is arranged just below the discharge end of the feeder.

[0022] Preferably, the buffer bin is a cone that is larger at the top and smaller at the bottom. A double helix structure is arranged inside the buffer bin. The revolution of the double helix causes the material to move in a circular motion along the cone wall, and the rotation of the spiral blades causes the material to be discharged toward the center of the cone in a radial motion. The buffer bin is also provided with high and low material levels.

[0023] Preferably, the four rollers in the four-roll crusher are arranged in two layers, with two rollers in each layer. The two rollers rotate in opposite directions to extrude the material. The two rollers move towards each other, generating an inward friction force on the incoming material, forcing the material to pass through the gap between the two rollers for extrusion and crushing. After passing through, the material enters the gap between the two rollers of the next level, where the gap is reduced and extrusion and crushing is performed again.

[0024] Preferably, oxygen content detection devices and nitrogen filling protection devices are provided at dangerous parts of the sulfur paste feeding system, and the dangerous parts include: the breaking system, the buffer bin, the pipe chain conveyor head, and the secondary crushing device.

[0025] Preferably, the sulfur paste screening and preliminary crushing device comprises: a screening system installed in the body and located directly below the cutting knife; the screening system comprises a first screening device, and the first screening device comprises:

[0026] A screening box, the screening box being installed in the machine body;

[0027] A first vertical partition and a first horizontal partition, the screening box is divided into a left chamber and a right chamber by the first vertical partition, and the left chamber is divided into an upper chamber and a lower chamber by the first horizontal partition;

[0028] A feed channel, passing through the upper and lower ends of the upper chamber, and extending into the lower chamber;

[0029] The first vertical rotating shaft and the second vertical rotating shaft are arranged at intervals on the left and right and are located on the right side of the feeding channel. The first vertical rotating shaft and the second vertical rotating shaft are both rotatably connected to the upper and lower ends of the upper chamber, and the lower end of the first vertical rotating shaft passes through the lower chamber. The first vertical rotating shaft or the second vertical rotating shaft is driven by the first driving motor in the upper chamber;

[0030] A first horizontal rotating shaft, rotatably connected in the lower chamber, and the first horizontal rotating shaft passes through the left and right sides of the feeding channel;

[0031] A first bevel gear, fixedly connected to the lower end of the first vertical rotating shaft;

[0032] A second bevel gear is fixedly connected to the right end of the first horizontal rotating shaft, and the first bevel gear is meshed with the second bevel gear for transmission;

[0033] A first pulley, fixedly connected to the first vertical shaft;

[0034] A second pulley is fixedly connected to the second vertical rotating shaft, and the first pulley and the second pulley are driven by a belt;

[0035] A first winding wheel, fixedly connected to the second vertical rotating shaft, a first pull rope is wound around the first winding wheel, and one end of the first pull rope is fixedly connected to the first winding wheel;

[0036] Two first connecting brackets are fixedly connected to the right inner wall of the right chamber with an interval therebetween, and the two first connecting brackets are both provided with a first fixed pulley;

[0037] A horizontal guide block fixedly connected to the left inner wall of the right chamber;

[0038] A first cam, fixedly connected to the first horizontal rotating shaft;

[0039] The first screen, at least one side wall of which is fixedly connected to the inner wall of the corresponding side of the lower chamber through a plurality of first springs, the upper peripheral side of the first screen and the inner peripheral wall of the lower chamber are sealed by an elastic seal, the first cam can contact the upper side of the first screen by rotation, and the other end of the first pull rope is fixedly connected to the first screen after passing through the upper and lower first fixed pulleys, the horizontal guide block, and the left inner wall of the right chamber in sequence;

[0040] An inclined block is fixedly connected to the lower end of the first screen and is located in the middle of the first screen in the front-rear direction. The lower end of the inclined block is an inclined surface with a lower left side and a higher right side. The sieve holes of the first screen are located outside the inclined block.

[0041] a second screen connected to the lower chamber and located below the first screen;

[0042] A pushing assembly is disposed in the lower chamber and is located between the first screen and the second screen and is located in the middle of the first screen in the front-rear direction;

[0043] The pushing component comprises:

[0044] A first horizontal connecting block, fixedly connected to the right inner wall of the lower chamber;

[0045] A vertical push rod passes through the first horizontal connecting block, the upper end of the vertical push rod is fixedly connected to a first push ball, and the first push ball is in sliding contact with the lower end of the inclined block;

[0046] A support block, fixedly connected to the upper portion of the vertical push rod;

[0047] A second spring, sleeved on the vertical push rod, one end of the second spring is fixedly connected to the support block, and the other end of the second spring is fixedly connected to the upper end of the first horizontal connection block;

[0048] A pushing block is fixedly connected to the lower end of the vertical push rod, and the pushing block moves downward to contact the upper end of the second screen.

[0049] Preferably, it also includes a ton bag pretreatment device, and the ton bag pretreatment device includes:

[0050] A treatment box, wherein two first support blocks are arranged at intervals on the left and right sides of the upper end of the treatment box, a threaded rod is rotatably connected between the two first support blocks, the middle part of the threaded rod is a non-threaded section, and the threaded sections at the left and right ends have opposite thread rotation directions, and the treatment box is also connected to a first dust collection device;

[0051] a second drive motor, disposed in the processing box, for driving the threaded rod;

[0052] Two threaded sliders, respectively threadedly connected to the two threaded segments;

[0053] Two groups of beating assemblies are respectively connected to two threaded sliders, and the beating assemblies include: a first support rod, the upper end of which is connected to the lower end of the threaded slider, the lower end of the first support rod is fixedly connected to a first horizontal connecting plate, the left end of the first horizontal connecting plate is connected to a first electric winding wheel, and the lower right end of the first horizontal connecting plate is connected to a second electric winding wheel; the second horizontal connecting plate is located below the first horizontal connecting plate, and the upper end of the second horizontal connecting plate is hingedly connected to a V-shaped rod, the V-shaped rod is hinged to form a V shape by a first connecting rod on the left and a first telescopic rod on the right, and the left end of the V-shaped rod is connected to The first through hole is arranged on the right part of the V-shaped rod; the first beating ball is connected to the right end of the V-shaped rod; the second fixed pulley is connected to the right end of the second horizontal connecting plate, the second fixed pulley is connected to the second electric winding wheel through the third pulley, and the third pulley passes through the first through hole; the second support rod is fixedly connected to the lower end of the second horizontal connecting plate, one end of the third spring is fixedly connected to the second support rod, one end of the third pull rope is connected to the first telescopic rod, and the other end is connected to the second electric winding wheel through the second fixed pulley in turn;

[0054] A load-bearing net, both ends of which are respectively connected to the two second horizontal connecting plates, and the other end of the third spring is connected to the load-bearing net, and the load-bearing net is used to place the tonnage bags to be processed;

[0055] A horizontal connecting rod, the right end of which passes through the left side wall of the processing box and is fixedly connected to a beating block, and the left end of which is fixedly connected to a second pushing ball;

[0056] A third vertical rotating shaft is rotatably connected to the lower end of the processing box, and a first processing disk is fixedly connected to the upper end of the third vertical rotating shaft, and a processing assembly is arranged on the first processing disk;

[0057] A horizontal support plate fixedly connected to the left side wall of the processing box;

[0058] A fourth vertical rotating shaft is rotatably connected to the horizontal support plate, a second cam is fixedly connected to the upper end of the fourth vertical rotating shaft, the second cam rotating shaft can push the second push ball to move in the left and right directions, the fourth vertical rotating shaft is driven by a third driving motor, and the third vertical rotating shaft and the fourth vertical rotating shaft are driven by a belt transmission assembly;

[0059] A fourth spring is sleeved on the horizontal connecting rod, the other end of the fourth spring is connected to the beating block, and the other end is fixedly connected to the left inner wall of the processing box.

[0060] Preferably, it also includes:

[0061] The first force sensor is used to detect the pulling force of the ton bag on the electric hoist;

[0062] The first angle detection device is used to detect the angle between the ton bag and the vertical plane when the ton bag falls to contact the cutting knife;

[0063] Speed ​​sensor, used to detect the falling speed of the ton bag when the electric hoist lowers the ton bag;

[0064] The second force sensor is arranged at the contact surface between the beating component of the beating system and the ton bag;

[0065] A second angle detection device is used to detect the angle between the screen of the screening device and the horizontal plane. The screen of the screening device is adjusted by the angle adjustment device, and the screen is also accelerated by the screening beating device;

[0066] A speed sensor is used to detect the speed of the scattering motor of the scattering system;

[0067] A vibration frequency sensor, used to detect the vibration frequency of the screen;

[0068] A controller is electrically connected to the first force sensor, the first angle detection device, the speed sensor, the second force sensor, the second angle detection device, the rotation speed sensor, the vibration frequency sensor, the second angle adjustment device, and the screening and beating device. The controller controls the second angle adjustment device and the screening and beating device to work based on the first force sensor, the first angle detection device, the speed sensor, the second force sensor, the second angle detection device, the rotation speed sensor, and the vibration frequency sensor, and includes:

[0069] Calculate the discharge capacity coefficient of the sulfur paste in the ton bag based on the first force sensor, the second force sensor, the first angle detection device, the speed sensor and formula (1);

[0070] ;

[0071] Wherein, Q is the discharge capacity coefficient, v is the detection value of the speed sensor, g is the acceleration of gravity, A is the distance from the tip of the cutter to which the ton bag falls, and t is the unit time. is the detection value of the first force sensor at the initial moment of the detection time period T, is the detection value of the first force sensor at the end of the detection time period T, is the detection value of the second force sensor, is the detection value of the first force sensor when the ton bag is not falling. is the density of sulfur paste, is the number of beats per unit time of the beating system, B is the cross-sectional area of ​​the cutting knife at a distance A from the tip of the cutting knife, sin is the sine, is the average angle between the two adjacent sides of the cutting knife tip, and lg is the logarithm with base 10; based on the discharge capacity coefficient of the sulfur paste in the ton bag and the second angle detection device and the speed sensor, the target angular velocity and the target vibration frequency are calculated using formulas (2) and (3) respectively, and the controller controls the angle adjustment device to periodically adjust the preset time at the target angular velocity, and at the same time, the controller controls the screening and beating device to work so that the detection value of the vibration frequency sensor is within the preset range of the target vibration frequency;

[0072] ;

[0073] ;

[0074] in, is the target angular velocity, arcsin is the inverse sine, D is the mesh diameter of the screen, tan is the tangent, n is the speed sensor detection value, R is the average vertical distance between each crushing tooth in the crushing roller of the scattering system and the roller surface, h is the vertical distance between the center of the screen and the axis of the uppermost crushing roller of the scattering system in the initial state, is the detection value of the second angle detection device after initial installation;

[0075] M is the target vibration frequency, S is the total area of ​​the mesh holes in the mesh, H is the distance between adjacent mesh holes in the mesh, and E is the thickness of the mesh. is the density of the sieve, and ln is the natural logarithm.

[0076] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0078] Figure 1 It is the front view of the feeding system of the present invention.

[0079] Figure 2 for Figure 1 B view.

[0080] Figure 3 It is a top view of the feeding system of the present invention.

[0081] Figure 4 for Figure 3 A-direction view.

[0082] Figure 5 The present invention is a schematic diagram of the working process.

[0083] Figure 6 A schematic structural diagram of an embodiment of the first screening device of the present invention.

[0084] Figure 7 It is a schematic structural diagram of an embodiment of a ton bag pretreatment device of the present invention.

[0085] In the figure: 1. Ton bag unpacking machine; 11. Machine body; 12. Electric hoist; 13. Cutter; 14. Beating system; 15. Dust removal device; 2. Sulfur paste screening and preliminary crushing device; 21. Screening system; 22. Scattering system; 23. Bottom silo; 3. Buffer bin; 4. Secondary crushing device; 41. Four-roll crusher; 5. Feeding and metering device; 51. Feeder; 52. Belt scale; 6. Tube chain conveyor 1; 7. Tube chain conveyor 2; 8. Forklift; 9. Ton bag; 10. First screening device; 101. Screening box; 102. First vertical partition; 103. First horizontal partition; 104 , left chamber; 105, right chamber; 106, upper chamber; 107, lower chamber; 108, feed channel; 109, first vertical shaft; 1010, second vertical shaft; 1011, first horizontal shaft; 1012, first bevel gear; 1013, second bevel gear; 1014, first pulley; 1015, second pulley; 1016, first winding wheel; 1017, first connecting bracket; 1018, horizontal guide block; 1019, first pull rope; 1020, first cam; 1021, first screen; 1022, first fixed pulley; 1023, inclined block; 1024, first Spring; 1025, second screen; 1026, push assembly; 10261, first horizontal connecting block; 10262, vertical push rod; 10263, support block; 10264, second spring; 10265, push block; 10266, first push ball; 1027, elastic seal; 20, ton bag pretreatment device; 201, treatment box; 202, first support block; 203, threaded rod; 204, second drive motor; 205, threaded slider; 206, slap assembly; 2061, first support rod; 2062, first horizontal connecting plate; 2063, second horizontal connecting plate ; 2064, V-shaped rod; 2065, first through hole; 2066, first beating ball; 2067, first electric winding wheel; 2068, second electric winding wheel; 2069, second fixed pulley; 20610, third spring; 20611, second pull rope; 20612, third pull rope; 20613, second support rod; 207, load-bearing net; 208, horizontal connecting rod; 209, second push ball; 2010, beating block; 2011, third vertical rotating shaft; 2012, fourth vertical rotating shaft; 2013, second cam; 2014, fourth spring; 2015, first processing tray. DETAILED DESCRIPTION

[0086] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0087] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0088] Embodiment 1:

[0089] The embodiment of the present invention provides a sulfur paste feeding system, comprising:

[0090] A ton bag unpacking machine 1, used for automatically unpacking ton bags 9;

[0091] The sulfur paste screening and preliminary crushing device 2 is used for screening and preliminary crushing of the unpacked sulfur paste;

[0092] Buffer bin 3, the initially crushed sulfur paste is transported into the buffer bin 3 by a tube chain conveyor 6;

[0093] Secondary crushing device 4, the sulfur paste in the buffer bin 3 is transported to the secondary crushing device 4 by the pipe chain conveyor 2 7 for secondary crushing;

[0094] The feeding and metering device 5 is used to measure the mass of the sulfur paste output by the secondary crushing device 4 .

[0095] Preferably, the ton bag unpacking machine 1 comprises:

[0096] A machine body 11, a sealing cover is installed on the outside of the machine body 11, and a door is provided on one side of the machine body 11;

[0097] An electric hoist 12, which is horizontally movably installed on the upper end of the machine body 11 and is used to lift the ton bag 9. The electric hoist 12 can be moved into the machine body 11, or moved through the warehouse door to the outside of the machine body 11;

[0098] A cutting knife 13, which is installed in the machine body 11 and is located on one side below the electric hoist 12, and is used to pierce and unpack the ton bag 9; wherein the cutting knife can be a cross multi-row knife;

[0099] A beating system 14, which is installed in the machine body 11 and located above the cutting knife 13, and is used for beating the ton bag 9 after the cutting knife 13 punctures the ton bag 9;

[0100] The dust removal device 15 is installed on the machine body 11 .

[0101] The sulfur paste screening and preliminary crushing device 2 comprises:

[0102] A screening system 21 is installed in the machine body 11 and is located directly below the cutting knife 13;

[0103] The breaking system 22 is installed in the machine body 11 and is located directly below the screening system 21. The sulfur paste with unqualified diameters screened by the screening system 21 enters the breaking system 22 for preliminary crushing;

[0104] The bottom silo 23 is installed at the bottom of the machine body 11. The sulfur paste with qualified diameter is screened by the screening system 21 and enters the bottom silo 23. The feed port of the bottom silo 23 is also connected with the discharge port of the disintegration system 22. The discharge port of the bottom silo 23 is connected with the feed end of the pipe chain conveyor 6, and the discharge end of the pipe chain conveyor 6 is connected with the feed port of the buffer bin 3.

[0105] The secondary crushing device 4 is a four-roll crusher 41, the discharge port of the buffer bin 3 is connected to the feed end of the pipe chain conveyor 27, and the discharge end of the pipe chain conveyor 27 is connected to the feed port of the four-roll crusher 41;

[0106] The feeding and metering device 5 comprises: a feeder 51 and a belt scale 52 . The feeding end of the feeder 51 is connected to the discharge port of the secondary crushing device 4 , and the belt scale 52 is arranged just below the discharge end of the feeder 51 .

[0107] Preferably, the buffer bin 3 is a cone that is larger at the top and smaller at the bottom. A double helix structure is arranged inside the buffer bin 3. The revolution of the double helix causes the material to move in a circular motion along the cone wall, and the rotation of the spiral blades causes the material to be discharged toward the center of the cone in a radial motion. The buffer bin 3 is also provided with high and low material levels.

[0108] Preferably, the four rollers in the four-roll crusher 41 are arranged in two layers, with two rollers in each layer. The two rollers rotate in opposite directions to extrude the incoming material. The two rollers move toward each other, generating an inward friction force on the incoming material, forcing the material to pass through the gap between the two rollers for extrusion and crushing. After passing through, the material enters the gap between the two rollers of the next level, where the gap is reduced and extrusion and crushing is performed again.

[0109] Preferably, an oxygen content detection device and a nitrogen filling protection device are provided at dangerous parts of the sulfur paste feeding system, and the dangerous parts include: the breaking system 22, the buffer bin 3, the pipe chain conveyor head, and the secondary crushing device 4.

[0110] Among them, sulfur paste: sulfur containing water (30~40%wt.), flammable solid, density 1300~2000 kg / m3.

[0111] Ton bag: Sulfur paste packaged in bags, with specifications of approximately 1m (length) × 1m (width) × 1m (height). Due to the uneven density of sulfur paste, each bag is measured by weight, 1000kg.

[0112] The sulfur paste in the ton bags has different physical properties due to different production times, so the treatment plan needs to be considered comprehensively.

[0113] 1) The sulfur paste is dry and hard, with lumps, the largest of which is about 150~50mm. It can be crushed by hand, and the particles are uneven in size, with a repose angle of about 50~60°.

[0114] 2) Due to the high temperature and dryness in the local area, the materials that have been stored for a period of time are obviously drier and contain less water than fresh materials.

[0115] To solve this problem, the process designed by this device is as follows: sulfur pastes of various shapes are first screened by the screening system, and those with qualified diameters enter the next process, and unqualified large pieces enter the disintegration system for preliminary crushing, and then enter the next process after the diameter is qualified. A four-roll crusher is added before weighing, and the sulfur paste needs to enter the four-roll crusher for secondary crushing to ensure that the output sulfur powder diameter is ≤1mm. See the process diagram Figure 5 .

[0116] The working principle of the above technical solution is:

[0117] The process of the present invention is as follows:

[0118] 1. Unpacking of ton bags

[0119] A ton bag unpacking machine (including electric hoist, cutting knife, beating system, dust removal device, screening system, and breaking system) is used. First, the ton bag is delivered to the bottom of the electric hoist of the ton bag unpacking machine by a forklift, and then the ton bag is manually hung on the hook of the electric hoist, the start button is pressed, the warehouse door is opened, the ton bag is lifted to the upper limit position, and the ton bag is moved horizontally into the sealing cover of the unpacking machine. The warehouse door is closed. The cutting knife is now directly below the ton bag, and the ton bag is lowered and punctured by gravity. The beating system beats the ton bag so that all the sulfur paste flows out. The unpacking position is equipped with a dust removal device. After dust collection, the material is directly discharged into the bottom silo, avoiding tedious dust collection work. Finally, the electric hoist returns along the original route and moves the empty bag out of the sealing cover.

[0120] 2. Sieving and initial crushing of sulfur paste

[0121] After the bag is broken, the sulfur paste is first screened by the screening system. Those with qualified diameters fall directly into the bottom silo and are then sent to the buffer bin by the tube chain conveyor. The large pieces with unqualified diameters enter the breaking up system for preliminary crushing. After passing the screening, they also fall into the bottom silo and are then sent to the buffer bin by the tube chain conveyor.

[0122] 3. Cache

[0123] A double helix structure is set inside the buffer bin. The revolution of the double helix makes the material move in a circular motion along the cone wall, and the rotation of the spiral blade makes the material move radially toward the center of the cone. The material flows upward from the cone and is discharged on the outer circumferential surface of the spiral, that is, it is mixed in the direction of the spiral axis. The combination of the revolution and rotation of the spiral in the mixer creates four flow forms of the material, namely, the composite movement of convection, shear, diffusion, and infiltration. Therefore, the material can be quickly mixed evenly in the buffer bin, and the material can be prevented from re-bonding into blocks and forming arch bridges.

[0124] The buffer bin is also equipped with high and low material levels to facilitate the control of the material quantity in the bin and realize high and low material level alarm prompts, so as to match and rationalize the operation of the entire line and prevent empty operation.

[0125] 4. Four-roll crusher

[0126] The materials in the buffer bin enter the four-roll crusher via the pipe chain conveyor 2 for secondary crushing. The double rollers rotate in opposite directions for extrusion, and the two layers are arranged up and down. The two rollers move towards each other, generating an inward friction force on the incoming materials, forcing the materials to pass through the gap between the two rollers for extrusion and crushing. After passing through, the materials enter the gap between the two rollers of the next level, where the gap is reduced and extrusion and crushing are performed again to output sulfur powder with a diameter of ≤1mm.

[0127] 5. Feeder and belt scale

[0128] The feeder and belt scale work together to continuously measure the quality of the output material. Operation process: After the buffer bin is filled with the required batch of materials, all the conversion switches of this part are placed in the automatic position in the main control cabinet, and the belt scale start button is pressed once. The equipment will start from the belt scale and delay starting in sequence to the previous level until the feeder's spiral starts to convey the material. The belt scale conveys the material according to the given flow rate. After the required material is conveyed, press the belt scale stop button once, and the equipment will delay stopping in sequence from the upper level to empty the material, that is, start in reverse order and stop in sequence.

[0129] The beneficial effects of the above technical solution are as follows: first, the ton bag 9 is automatically unpacked by the ton bag unpacking machine 1, and then the unpacked sulfur paste is screened and preliminarily crushed by the sulfur paste screening and preliminary crushing device 2, and the preliminarily crushed sulfur paste is transported into the buffer bin 3 by the tube chain conveyor 1 6, and the sulfur paste in the buffer bin 3 is transported into the secondary crushing device 4 by the tube chain conveyor 2 7 for secondary crushing, and finally forms sulfur powder, and finally, the mass of the sulfur paste output by the secondary crushing device 4 is measured by the feeding and metering device 5. The system of the present invention realizes the conversion of ton bag sulfur paste into sulfur powder through the above device, solving the problem that there is no device for converting ton bag sulfur paste into sulfur powder.

[0130] The system of the present invention can process ton-bag sulfur paste into sulfur powder with a diameter of ≤1mm through the main steps of bag breaking, beating, screening, crushing, weighing and metering, and with safety measures such as dust removal, static electricity removal, and nitrogen filling protection. The output process is uniform and stable, and the quality of the output material can be continuously measured, which is convenient for use in subsequent processes.

[0131] The system (device) of the present invention converts ton bags of sulfur paste into sulfur powder through a series of treatments. The device has a reasonable layout and a small footprint, can overcome the problem of diverse incoming material properties, and can continuously measure the quality of the output materials, which is convenient for the use of subsequent processes. At the same time, it prevents flash explosions of sulfur dust from multiple aspects to ensure production safety.

[0132] Among them, the main parameters of the device in the system of the present invention are: 1. The material of the part of the ton bag unpacking machine that contacts the material (sulfur): 304; treatment of the stainless steel surface: pickling and passivation treatment; cutting knife: material 2Gr13, cross multi-row knife breaks the bag at one time to prevent the damaged ton bag from entering the material after the bag is broken; beating system: composed of two sets of air bags, which are controlled to cross-beat the bag body to achieve the flow-aiding effect. When the material is leaked out, it is prevented from leaving residual material in the bag, and the residual material is dropped out by airflow beating; screening system: 2 sets, for the material before and after the screening; dust removal device: dust collection efficiency 99.99%, filtration wind speed (m / S) <1.2, dust collection air volume (m³ / h) 824-1264; the dust removal device interface of the equipment body collects dust at the dust collection point of the whole line equipment, and the dust collected material is discharged into the bottom silo for use. The equipment is equipped with an explosion discharge port and a compressed nitrogen protection injection point to ensure operation in a micro-nitrogen state. 2. Tube chain conveyor - Material of the part in contact with materials: 304; Stainless steel surface treatment: Pickling and passivation treatment (the materials and treatment of other devices in contact with materials can be found here); Seal: Packing seal; 3. Feeder, conveying method: screw conveyor, frequency conversion speed regulation; Advantages of screw conveyor feeding: simple structure, easy maintenance, large conveying capacity; small cross-sectional dimensions; can be loaded and unloaded at multiple points in the middle; can use the cover of the closed casing to achieve a better sealing effect; safe and convenient operation and low manufacturing cost. 7. Belt scale, belt scale body material: Q235; sealing cover material: 304; conveyor belt: annular skirt belt.

[0133] Security Settings:

[0134] 1. Explosion-proof and anti-static equipment

[0135] All equipment in this device is explosion-proof, anti-static and grounded.

[0136] 2. Dust removal device

[0137] The bag breaking process raises dust, and the material is sucked into the inner filter dust collecting bag by the fan. The system relies on the vibration motor to shake off the dust and collect it into the bottom silo, completing the recycling of self-collection and self-collection. The dust collector is an internal filter explosion-proof type. The filter bag can effectively unload the explosion in an explosive environment to avoid concentrated dust explosion and untimely unloading. The dust collector also takes into account the dust collection of other dust points in the entire line, and can meet the efficient utilization of multi-point dust collection at the same time.

[0138] 3. Nitrogen filling protection

[0139] In order to prevent danger during material transportation, the equipment detects oxygen content and provides nitrogen protection at corresponding dangerous parts. There are four main locations: the breaking system, the buffer bin, the head of the tube chain conveyor, and the four-roll crusher.

[0140] (1) The nitrogen valves at the breaking system and buffer warehouse will only start filling with nitrogen after the door of the ton bag unpacking machine is opened, because the oxygen content transmitter needs 20 seconds to start up. Only when the double helix is ​​running, the oxygen content transmitter will be powered on and work. Therefore, it is necessary to start the double helix first, and then detect the oxygen content in the equipment after 20 seconds. When the oxygen content is greater than 16%, the nitrogen valve will continue to open and fill with nitrogen. When it is less than 16%, intermittent nitrogen filling will be carried out, filling with nitrogen for 4 seconds and stopping for 8 seconds. After the bag unpacking is completed, the nitrogen valve of the breaking system is closed, the double helix ends its operation, and the nitrogen valve of the buffer warehouse is closed.

[0141] (2) The nitrogen valves of the pipe chain conveyor and the four-roll crusher will only start to fill with nitrogen after the belt scale start button is pressed once. After the belt scale is running, the oxygen content transmitter will be powered on. The belt scale needs to be started first, and the oxygen content in the equipment will be detected after 20 seconds. When the oxygen content is greater than 16%, the nitrogen valve will continue to open to fill with nitrogen. When it is less than 16%, intermittent nitrogen filling will be carried out, filling with nitrogen for 4 seconds and stopping for 8 seconds. Press the belt scale stop button once, and the nitrogen valves of the pipe chain conveyor and the four-roll crusher will all be closed.

[0142] (3) In order to prevent malfunction and affect normal production, the nitrogen protection part does not participate in process control. However, when the oxygen content does not meet the requirements, in addition to the sound and light alarm of the transmitter itself, the alarm light of the main control cabinet also alarms, and the operator is required to check the equipment in time to prevent accidents.

[0143] 4. Set up dust leakage detection points in multiple locations, including: the opening and closing position of the bin door, the top door position of the machine body, the exhaust position of the dust bag of the dust removal device, the entrance and exit of the first tube chain conveyor, the entrance and exit of the second tube chain conveyor, the soft joints on both sides of the vibrating screen of the screening system, the four-axis end side of the four-roll crusher, and the belt scale position. Once dust leaks, it can be discovered in time for handling.

[0144] Example 2

[0145] On the basis of Example 1, Figure 6 As shown, the sulfur paste screening and preliminary crushing device 2 includes: a screening system 21, which is installed in the body 11 and is located directly below the cutting knife 13; the screening system 21 includes a first screening device 10, and the first screening device 10 includes:

[0146] A screening box 101, wherein the screening box 101 is installed in the machine body 11;

[0147] A first vertical partition 102 and a first horizontal partition 103, wherein the screening box 101 is divided into a left chamber 104 and a right chamber 105 by the first vertical partition 102, and the left chamber 104 is divided into an upper chamber 106 and a lower chamber 107 by the first horizontal partition 103;

[0148] The feed channel 108 passes through the upper and lower ends of the upper chamber 106 and extends into the lower chamber 107;

[0149] The first vertical rotating shaft 109 and the second vertical rotating shaft 1010 are arranged at intervals on the left and right and are located on the right side of the feeding channel 108. The first vertical rotating shaft 109 and the second vertical rotating shaft are both rotatably connected to the upper and lower ends of the upper chamber 106, and the lower end of the first vertical rotating shaft 109 passes through the lower chamber 107. The first vertical rotating shaft 109 or the second vertical rotating shaft 1010 is driven by the first driving motor in the upper chamber 106;

[0150] A first horizontal rotating shaft 1011, rotatably connected in the lower chamber 107, and the first horizontal rotating shaft 1011 passes through the left and right sides of the feeding channel 108;

[0151] A first bevel gear 1012, fixedly connected to the lower end of the first vertical shaft 109;

[0152] The second bevel gear 1013 is fixedly connected to the right end of the first horizontal rotating shaft 1011, and the first bevel gear 1012 is meshed with the second bevel gear 1013 for transmission;

[0153] A first pulley 1014, fixedly connected to the first vertical shaft 109;

[0154] A second pulley 1015 is fixedly connected to the second vertical shaft 1010, and the first pulley 1014 and the second pulley 1015 are driven by a belt;

[0155] A first winding wheel 1016 is fixedly connected to the second vertical rotating shaft 1010, a first pull rope 1019 is wound around the first winding wheel 1016, and one end of the first pull rope 1019 is fixedly connected to the first winding wheel 1016;

[0156] Two first connecting brackets 1017 are fixedly connected to the right inner wall of the right chamber 105 with an interval therebetween, and the two first connecting brackets 1017 are both provided with a first fixed pulley 1022;

[0157] A horizontal guide block 1018, fixedly connected to the left inner wall of the right chamber 105;

[0158] A first cam 1020, fixedly connected to the first horizontal rotating shaft 1011;

[0159] The first screen 1021, at least one side wall of which is fixedly connected to the inner side wall of the corresponding side of the lower chamber 107 through a plurality of first springs 1024, the upper peripheral side of the first screen 1021 and the peripheral inner wall of the lower chamber 107 are sealed by an elastic seal (such as a seal made of elastic material such as an elastic band, which seals the side wall of the first screen and the inner wall of the lower chamber), the first cam 1020 can rotate to contact the upper end of the first screen 1021, and the other end of the first pull rope 1019 passes through the upper and lower first fixed pulleys 1022, the horizontal guide block 1018, and the left inner wall of the right chamber 105 in sequence, and then is fixedly connected to the first screen 1021;

[0160] The inclined block 1023 is fixedly connected to the lower end of the first screen 1021 and is located in the middle of the first screen 1021 in the front-to-back direction. The lower end of the inclined block 1023 is an inclined surface with a lower left side and a higher right side. The sieve holes of the first screen 1021 are located outside the inclined block 1023.

[0161] The second screen 1025 is connected to the lower chamber 107 and is located below the first screen 1021;

[0162] The pushing assembly 1026 is disposed in the lower chamber 107 and is located between the first screen 1021 and the second screen 1025 and in the middle of the first screen 1021 in the front-rear direction;

[0163] The pushing assembly 1026 includes:

[0164] A first horizontal connecting block 10261, fixedly connected to the right inner wall of the lower chamber 107;

[0165] A vertical push rod 10262 passes through the first horizontal connecting block 10261, and a first push ball 10266 is fixedly connected to the upper end of the vertical push rod 10262, and the first push ball 10266 is in sliding contact with the lower end of the inclined block 1023;

[0166] A support block 10263, fixedly connected to the upper portion of the vertical push rod 10262;

[0167] A second spring 10264 is sleeved on the vertical push rod 10262, one end of the second spring 10264 is fixedly connected to the support block 10263, and the other end of the second spring 10264 is fixedly connected to the upper end of the first horizontal connection block 10261;

[0168] The pushing block 10265 is fixedly connected to the lower end of the vertical push rod 10262 , and the pushing block 10265 moves downward to contact the upper end of the second screen 1025 .

[0169] The working principle and beneficial effects of the above technical solution are as follows: the first motor is started to drive the first vertical rotating shaft or the second rotating shaft connected to the first motor to rotate, and since the first vertical rotating shaft and the second vertical rotating shaft are driven by the first pulley, the second pulley and the belt, the first vertical rotating shaft and the second rotating shaft rotate simultaneously;

[0170] The material (sulfur) to be screened reaches the first screen through the feed channel. When the above-mentioned first vertical shaft rotates, the first horizontal shaft is driven to rotate through the action of the first bevel gear and the second bevel gear, so that the cam thereon rotates. The rotation of the cam can contact the upper end of the first screen, giving the first screen a vertical vibration force to accelerate the screening; at the same time, the second shaft rotates, driving the first winding wheel thereon to rotate, winding the first pull rope, and the first pull rope can pull the first screen connected thereto to move to the right. At this time, the first spring pull rope, when the first winding wheel rotates to unwind the first pull rope, the first pull rope stops pulling the first screen, and under the action of the elastic force of the first spring, the first screen moves to the right. The left and right movement of the screen can further accelerate the screening, and the two first pulleys and the horizontal guide block guide the movement of the first pull rope, so that the first pull rope can stably and reliably pull the first screening net;

[0171] When the first screening net moves left and right, the inclined block at its lower end moves accordingly, so that the height of the inclined block in contact with the first push ball changes continuously. When the inclined block moves to the right, it pushes the first push ball to move downward, compressing the second spring. When the inclined block moves to the left, the first push ball moves upward with the cooperation of the second spring. On the one hand, the first push ball provides vertical support force to the first screening net. At the same time, when the first push ball moves downward, it drives the vertical push rod to move downward, and the push block at its lower end hits the second screening net to speed up the screening of the second screening net. The first screening net and the second screening net can screen materials of different particle sizes to ensure the screening effect.

[0172] The above technical solution can realize the double accelerated screening of the first screen and the accelerated screening of the second screening net through a single driving member of the first driving motor, which is more convenient for the use of the present invention.

[0173] Example 3

[0174] On the basis of Example 1 or 2, Figure 7 As shown, it also includes a ton bag 9 pretreatment device, and the ton bag 9 pretreatment device includes:

[0175] A treatment box 201, wherein two first support blocks 20210263 are arranged at intervals on the left and right sides of the upper end of the treatment box 201, and a threaded rod 203 is rotatably connected between the two first support blocks 20210263, wherein the middle portion of the threaded rod 203 is a non-threaded section, and the threaded sections at the left and right ends have opposite threaded directions, and the treatment box 201 is also connected to a first dust collecting device;

[0176] A second driving motor 204 is disposed in the processing box 201 and is used to drive the threaded rod 203;

[0177] Two threaded sliders 205 are respectively threadedly connected to the two threaded segments;

[0178] Two groups of beating assemblies 206 are respectively connected to two threaded sliders 205, and the beating assemblies 206 include: a first support rod 2061, the upper end of which is connected to the lower end of the threaded slider 205, the lower end of the first support rod 2061 is fixedly connected to a first horizontal connecting plate 2062, the left end of the first horizontal connecting plate 2062 is connected to a first electric winding wheel 2067, and the lower right end of the first horizontal connecting plate 2062 is connected to a second electric winding wheel 2068; a second horizontal connecting plate 2063 is located below the first horizontal connecting plate 2062, and the upper end of the second horizontal connecting plate 2063 is hingedly connected to a V-shaped rod 2064, and the V-shaped rod 2064 is hingedly connected to the first connecting rod on the left and the first telescopic rod on the right to form a V shape, and the left end of the V-shaped rod 2064 is connected by a second pull rope 20611 is connected to the first electric winding wheel 2067, and the first through hole 2065 is set on the right part of the V-shaped rod 2064; the first beating ball 2066 is connected to the right end of the V-shaped rod 2064; the second fixed pulley 2069 is connected to the right end of the second horizontal connecting plate 2063, and the second fixed pulley 2069 is connected to the second electric winding wheel 2068 through the third pull rope 20612, and the third pull rope 20612 passes through the first through hole 2065, one end of the third pull rope is connected to the first telescopic rod, and the other end is connected to the second electric winding wheel through the second fixed pulley in turn; the second support rod 20613 is fixedly connected to the lower end of the second horizontal connecting plate 2063, and one end of the third spring 20610 is fixedly connected to the second support rod 20613;

[0179] The load-bearing net 207 has two ends connected to the two second horizontal connecting plates 2063 respectively, and the other end of the third spring 20610 is connected to the load-bearing net 207, and the load-bearing net 207 is used to place the to-be-processed ton bags 9;

[0180] A horizontal connecting rod 208, the right end of which passes through the left side wall of the processing box 201 and is fixedly connected to a beating block 2010, and the left end of which is fixedly connected to a second pushing ball 209;

[0181] A third vertical shaft 2011 is rotatably connected to the lower end of the processing box 201, and a first processing tray 2015 is fixedly connected to the upper end of the third vertical shaft 2011, and a processing assembly is arranged on the first processing tray 2015;

[0182] A horizontal support plate, fixedly connected to the left side wall of the processing box 201;

[0183] A fourth vertical rotating shaft 2012 is rotatably connected to the horizontal support plate, a second cam 2013 is fixedly connected to the upper end of the fourth vertical rotating shaft 2012, the second cam 2013 rotating shaft can push the second pushing ball 209 to move in the left and right directions, the fourth vertical rotating shaft 2012 is driven by a third driving motor, and the third vertical rotating shaft 2011 and the fourth vertical rotating shaft 2012 are driven by a belt transmission assembly;

[0184] The fourth spring 2014 is sleeved on the horizontal connecting rod 208 , the other end of the fourth spring 2014 is connected to the beating block 2010 , and the other end is fixedly connected to the left inner wall of the processing box 201 .

[0185] The working principle and beneficial effects of the above technical solution are as follows: due to the storage or transportation process of the ton bag, the surface of the ton bag may be contaminated with dust, and the ton bag is directly unpacked by a cutter in the unpacking machine, and there is also beating, which may cause the dust on the ton bag to mix with the sulfur paste, affecting the quality of the sulfur paste, so the present invention is provided with a ton bag pretreatment device;

[0186] When the ton bag pretreatment device is in use, the door of the treatment box is opened, the ton bag is placed in the load-bearing net, and then the door is closed; by controlling the first electric winding wheel to rotate, the second pull rope is released, and the second electric winding wheel is controlled to rotate, under the gravity of the V-shaped rod (preferably, a counterweight block can be placed on the first connecting rod), the first connecting rod rotates downward, the first telescopic rod rotates upward, and the beating ball on the first telescopic rod beats the ton bag to accelerate the discharge of dust, and the third spring is compressed at this time; when the first electric winding wheel is controlled to rotate, the second pull rope is wound up, the second electric winding wheel is controlled to rotate, the third pull rope is wound up, and under the elastic force of the third spring, the first telescopic rod rotates downward to continue beating the ton bag, the beating range of the beating ball can be expanded by setting the above-mentioned beating assembly, and the movement of the V-shaped rod can be made more stable and reliable by setting the first electric winding wheel, the second electric winding wheel, the third spring, the second fixed pulley, the second pull rope, and the third pull rope;

[0187] At the same time, the threaded rod can be driven to rotate by starting the second driving motor. The rotation of the threaded rod makes the two threaded sliders approach or move away from each other, so that the flapping assembly as a whole and the ton bag in the load-bearing net move left and right, so as to further accelerate the dust removal of the ton bag; at the same time, the fourth vertical rotating shaft is driven to rotate by controlling the rotation of the third driving motor, and the third vertical rotating shaft is driven to rotate by the belt transmission assembly. When the fourth vertical rotating shaft rotates, the second cam on it rotates, and the flapping block can move left and right under the pushing action of the cam and the elastic force of the fourth spring. When it moves to the right and contacts the load-bearing net, it can flap the load-bearing net, so as to further accelerate the dust removal of the ton bag;

[0188] During the beating process, the first dust collecting component is activated to achieve dust collection;

[0189] And the processing components on the first processing disk may include: a plurality of nozzles arranged at intervals in the radial and circumferential directions outside the first processing disk, the nozzles can be used to clean the load-bearing net after dust removal, or can also spray water to rinse the ton bag as needed, the above-mentioned third rotating shaft rotates, driving the nozzle to rotate, which can speed up the cleaning; the above-mentioned technical solution can speed up the dust removal of the ton bag through the above-mentioned multiple auxiliary dust removal.

[0190] Example 4

[0191] On the basis of any one of Embodiments 1-3, further comprising:

[0192] The first force sensor is used to detect the pulling force of the ton bag on the electric hoist;

[0193] The first angle detection device is used to detect the angle between the ton bag and the vertical plane when the ton bag falls to contact the cutting knife;

[0194] Speed ​​sensor, used to detect the falling speed of the ton bag when the electric hoist lowers the ton bag;

[0195] The second force sensor is arranged at the contact surface between the beating component of the beating system and the ton bag;

[0196] A second angle detection device is used to detect the angle between the screen of the screening device and the horizontal plane. The screen of the screening device is adjusted by the angle adjustment device, and the screen is also accelerated by the screening beating device;

[0197] A speed sensor is used to detect the speed of the scattering motor of the scattering system;

[0198] A vibration frequency sensor, used to detect the vibration frequency of the screen;

[0199] A controller is electrically connected to the first force sensor, the first angle detection device, the speed sensor, the second force sensor, the second angle detection device, the rotation speed sensor, the vibration frequency sensor, the second angle adjustment device, and the screening and beating device. The controller controls the second angle adjustment device and the screening and beating device to work based on the first force sensor, the first angle detection device, the speed sensor, the second force sensor, the second angle detection device, the rotation speed sensor, and the vibration frequency sensor, and includes:

[0200] Calculate the discharge capacity coefficient of the sulfur paste in the ton bag based on the first force sensor, the second force sensor, the first angle detection device, the speed sensor and formula (1);

[0201] ;

[0202] Wherein, Q is the discharge capacity coefficient, v is the detection value of the speed sensor, g is the acceleration of gravity, A is the distance from the tip of the cutter to which the ton bag falls, and t is the unit time. is the detection value of the first force sensor at the initial moment of the detection time period T, is the detection value of the first force sensor at the end of the detection time period T, is the detection value of the second force sensor, is the detection value of the first force sensor when the ton bag is not falling. is the density of sulfur paste, is the number of beats per unit time of the beating system, B is the cross-sectional area of ​​the cutting knife at a distance A from the tip of the cutting knife, sin is the sine, is the average angle between two adjacent sides of the cutting knife tip, and lg is the logarithm with base 10;

[0203] Based on the discharge capacity coefficient of the sulfur paste in the ton bag and the second angle detection device and the rotation speed sensor, the target angular velocity and the target vibration frequency are calculated using formulas (2) and (3) respectively, and the controller controls the angle adjustment device to periodically adjust the preset time at the target angular velocity. At the same time, the controller controls the screening and beating device to work so that the detection value of the vibration frequency sensor is within the preset range of the target vibration frequency.

[0204] ;

[0205] ;

[0206] in, is the target angular velocity, arcsin is the inverse sine, D is the mesh diameter of the screen, tan is the tangent, n is the speed sensor detection value, R is the average vertical distance between each crushing tooth in the crushing roller of the scattering system and the roller surface, h is the vertical distance between the center of the screen and the axis of the uppermost crushing roller of the scattering system in the initial state, is the detection value of the second angle detection device after initial installation;

[0207] M is the target vibration frequency, S is the total area of ​​the mesh holes in the mesh, H is the distance between adjacent mesh holes in the mesh, and E is the thickness of the mesh. is the density of the sieve, and ln is the natural logarithm.

[0208] The working principle and beneficial effects of the above technical solution are as follows: a first force sensor is provided to detect the pulling force of the ton bag on the electric hoist; a first angle detection device is provided to detect the angle between the ton bag and the vertical plane when the ton bag falls to contact with the cutting knife; a speed sensor is provided to detect the falling speed of the ton bag when the electric hoist lowers the ton bag; a second force sensor is provided at the contact surface between the beating component of the beating system and the ton bag; a second angle detection device is provided to detect the angle between the screen of the screening device and the horizontal plane, the screen of the screening device is adjusted by the angle adjustment device, and the screening of the screen is also accelerated by the screening beating device; a speed sensor is provided to detect the speed of the beating motor of the beating system; a vibration frequency sensor is provided to detect the vibration frequency of the screen; the controller is based on the first force sensor, the first angle detection device, the speed sensor, the second force sensor, the second angle detection device The controller controls the second angle adjustment device and the screening and beating device to work by using a speed sensor and a vibration frequency sensor: first, based on the first force sensor, the second force sensor, the first angle detection device, the speed sensor and formula (1), the discharge capacity coefficient of the sulfur paste in the ton bag is calculated; then, based on the discharge capacity coefficient of the sulfur paste in the ton bag and the second angle detection device and the speed sensor, the target angular velocity and the target vibration frequency are calculated using formulas (2) and (3) respectively, and the controller controls the angle adjustment device to periodically adjust the preset time at the target angular velocity, and at the same time, the controller controls the screening and beating device to work so that the detection value of the vibration frequency sensor is within the preset range of the target vibration frequency; the screening is accelerated by adjusting the angle and screening and beating, and the accelerated screening is adapted to the discharge capacity of the sulfur paste to avoid the accumulation of the sulfur paste and affect the screening efficiency;

[0209] In addition, the formula (1) evaluates the discharge capacity based on multiple parameters such as the actual parameters of the ton bag (the distance from the tip of the cutter to which the ton bag falls, the detection value of the first force sensor at the initial moment of the detection time period T, the detection value of the first force sensor when the ton bag is not falling, the detection value of the first force sensor at the end of the detection time period T, and the falling speed of the ton bag) and the flapping parameters (the number of flapping times per unit time of the flapping system), the average angle between the two adjacent sides of the tip of the cutter, the density of the sulfur paste, the cross-sectional area of ​​the cutter at a distance A from the tip of the cutter (related to the hole of the cutter breaking the bag), etc., so the calculation is more reliable and has better adaptability;

[0210] In formula (2), the speed is adjusted to adapt to the screen, the scattering and the discharge capacity based on the discharge capacity, the scattering parameters (the scattering speed, the average value of the vertical distance between each crushing tooth in the crushing roller of the scattering system and the roller surface, the vertical distance between the center of the screen and the axis of the uppermost crushing roller of the scattering system in the initial state), and the screen parameters (the screen hole diameter, the detection value of the second angle detection device after initial installation);

[0211] In formula (3), based on the screen parameters (the total area of ​​the screen holes in the screen, the distance between adjacent screen holes in the screen, the thickness of the screen, the density of the screen, the screen hole diameter), the discharge capacity, and the target angular velocity, the screening beating adjustment and the angle adjustment are adapted to each other, and the adjustment is adapted to the screen and the discharge capacity, thereby making the adjustment more reliable.

[0212] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A sulfur paste feeding system, characterized in that: include: A ton bag unpacking machine (1) for automatically unpacking ton bags (9); The sulfur paste screening and preliminary crushing device (2) is used to screen and preliminary crush the unpacked sulfur paste; The sulphur paste after preliminary crushing is transported into the buffer bin (3) by a tube chain conveyor (6); The sulfur paste in the buffer bin (3) is transported to the secondary crushing device (4) by the second pipe chain conveyor (7) for secondary crushing; A feeding and metering device (5) for measuring the mass of the sulfur paste output by the secondary crushing device (4); The ton bag unpacking machine (1) comprises: A machine body (11), a sealing cover is installed on the outside of the machine body (11), and a door is provided on one side of the machine body (11); An electric hoist (12), the electric hoist (12) being horizontally movably mounted on the upper end of the machine body (11) and used for lifting the ton bag (9), the electric hoist (12) being movable into the machine body (11), or being movable through a warehouse door to the outside of the machine body (11); A cutting knife (13), the cutting knife (13) is installed in the machine body (11) and is located on one side below the electric hoist (12), and is used to pierce and unpack the ton bag (9); A beating system (14), the beating system (14) is installed in the machine body (11) and is located above the cutting knife (13), and is used to beat the ton bag (9) after the cutting knife (13) punctures the ton bag (9); A dust removal device (15) mounted on the machine body (11); The sulfur paste screening and preliminary crushing device (2) comprises: A screening system (21) is installed in the machine body (11) and is located directly below the cutting knife (13); A breaking system (22) is installed in the machine body (11) and is located directly below the screening system (21). The sulfur paste with unqualified diameters screened by the screening system (21) enters the breaking system (22) for preliminary crushing; A bottom silo (23) is installed at the bottom of the machine body (11). The sulphur paste with a qualified diameter is screened by the screening system (21) and enters the bottom silo (23). The feed port of the bottom silo (23) is also connected to the discharge port of the disintegration system (22). The discharge port of the bottom silo (23) is connected to the feed end of the tube chain conveyor (6), and the discharge end of the tube chain conveyor (6) is connected to the feed port of the buffer bin (3). The secondary crushing device (4) is a four-roll crusher (41), the discharge port of the buffer bin (3) is connected to the feed end of the second tube chain conveyor (7), and the discharge end of the second tube chain conveyor (7) is connected to the feed port of the four-roll crusher (41); The feeding and metering device (5) comprises: a feeder (51) and a belt scale (52), wherein the feeding end of the feeder (51) is connected to the discharge port of the secondary crushing device (4), and the belt scale (52) is arranged directly below the discharge end of the feeder (51); The screening system (21) comprises a first screening device (10), wherein the first screening device (10) comprises: A screening box (101), the screening box (101) being installed in the machine body (11); a first vertical partition (102) and a first horizontal partition (103), wherein the screening box (101) is divided into a left chamber (104) and a right chamber (105) by the first vertical partition (102), and the left chamber (104) is divided into an upper chamber (106) and a lower chamber (107) by the first horizontal partition (103); A feed channel (108) passes through the upper and lower ends of the upper chamber (106) and extends into the lower chamber (107); A first vertical rotating shaft (109) and a second vertical rotating shaft (1010) are arranged at intervals on the left and right and are located on the right side of the feeding channel (108); the first vertical rotating shaft (109) and the second vertical rotating shaft are both rotatably connected to the upper and lower ends of the upper chamber (106), and the lower end of the first vertical rotating shaft (109) passes through the lower chamber (107); the first vertical rotating shaft (109) or the second vertical rotating shaft (1010) is driven by a first driving motor in the upper chamber (106); A first horizontal rotating shaft (1011) is rotatably connected in the lower chamber (107), and the first horizontal rotating shaft (1011) passes through the left and right sides of the feeding channel (108); A first bevel gear (1012) fixedly connected to the lower end of the first vertical rotating shaft (109); The second bevel gear (1013) is fixedly connected to the right end of the first horizontal rotating shaft (1011), and the first bevel gear (1012) and the second bevel gear (1013) are meshed and transmitted; A first pulley (1014) fixedly connected to the first vertical rotating shaft (109); A second pulley (1015) is fixedly connected to the second vertical rotating shaft (1010), and the first pulley (1014) and the second pulley (1015) are driven by a belt; A first winding wheel (1016) is fixedly connected to the second vertical rotating shaft (1010), a first pull rope (1019) is wound around the first winding wheel (1016), and one end of the first pull rope (1019) is fixedly connected to the first winding wheel (1016); Two first connecting brackets (1017) are fixedly connected to the right inner wall of the right chamber (105) at an interval up and down, and the two first connecting brackets (1017) are both provided with a first fixed pulley (1022); A horizontal guide block (1018) fixedly connected to the left inner wall of the right chamber (105); A first cam (1020) fixedly connected to the first horizontal rotating shaft (1011); A first screen (1021), at least one side wall of which is fixedly connected to the inner side wall of the corresponding side of the lower chamber (107) via a plurality of first springs (1024); the upper peripheral side of the first screen (1021) and the peripheral inner wall of the lower chamber (107) are sealedly connected via an elastic sealing member (1027); the first cam (1020) can contact the upper end of the first screen (1021) when rotating; the other end of the first pull rope (1019) passes through two upper and lower first fixed pulleys (1022), a horizontal guide block (1018), and the left inner wall of the right chamber (105) in sequence, and is then fixedly connected to the first screen (1021); An inclined block (1023) is fixedly connected to the lower end of the first screen (1021) and is located in the middle of the first screen (1021) in the front-rear direction, the lower end of the inclined block (1023) is an inclined surface with a lower left side and a higher right side, and the sieve holes of the first screen (1021) are located outside the inclined block (1023); A second screen (1025) connected to the lower chamber (107) and located below the first screen (1021); A pushing assembly (1026) is disposed in the lower chamber (107), and is located between the first screen (1021) and the second screen (1025), and is located in the middle of the first screen (1021) in the front-rear direction; The pushing assembly (1026) comprises: A first horizontal connecting block (10261) is fixedly connected to the right inner wall of the lower chamber (107); A vertical push rod (10262) passes through the first horizontal connecting block (10261), the upper end of the vertical push rod (10262) is fixedly connected with a first push ball (10266), and the first push ball (10266) is in sliding contact with the lower end of the inclined block (1023); A support block (10263) fixedly connected to the upper portion of the vertical push rod (10262); A second spring (10264) is sleeved on the vertical push rod (10262), one end of the second spring (10264) is fixedly connected to the support block (10263), and the other end of the second spring (10264) is fixedly connected to the upper end of the first horizontal connection block (10261); A pushing block (10265) is fixedly connected to the lower end of the vertical push rod (10262), and the pushing block (10265) moves downward to contact the upper end of the second screen (1025).

2. A sulfur paste feeding system according to claim 1, characterized in that: The buffer bin (3) is a cone that is larger at the top and smaller at the bottom. A double helix structure is arranged inside the buffer bin (3). The revolution of the double helix causes the material to move in a circular motion along the cone wall, and the rotation of the spiral blades causes the material to be discharged toward the center of the cone to move radially. The buffer bin (3) is also provided with high and low material levels.

3. A sulfur paste feeding system according to claim 1, characterized in that: The four rollers in the four-roll crusher (41) are arranged in two layers, one above the other, with two rollers in each layer. The two rollers rotate in opposite directions to squeeze the material. The two rollers move in opposite directions to generate an inward friction force on the incoming material, forcing the material to pass through the gap between the two rollers for squeezing and crushing. After passing through, the material enters the gap between the two rollers of the next level, where the gap is reduced and the material is squeezed and crushed again.

4. A sulfur paste feeding system according to claim 1, characterized in that: Dangerous parts of the sulfur paste feeding system are provided with oxygen content detection devices and nitrogen filling protection devices, and the dangerous parts include: the breaking system (22), the buffer bin (3), the head of the pipe chain conveyor, and the secondary crushing device (4).

5. A sulfur paste feeding system according to claim 1, characterized in that: It also includes a ton bag (9) pretreatment device, the ton bag (9) pretreatment device comprising: A treatment box (201), wherein two first support blocks (202) (10263) are arranged at intervals on the left and right sides of the upper end of the treatment box (201), a threaded rod (203) is rotatably connected between the two first support blocks (202) (10263), the middle part of the threaded rod (203) is a non-threaded section, and the threaded sections at the left and right ends have opposite thread rotation directions, and the treatment box (201) is also connected to a first dust collection device; A second driving motor (204), disposed in the processing box (201), and used for driving the threaded rod (203); Two threaded sliders (205) are respectively threadedly connected to the two threaded segments; Two groups of beating assemblies (206) are respectively connected to two threaded sliders (205), and the beating assemblies (206) include: a first support rod (2061), the upper end of which is connected to the lower end of the threaded slider (205); the lower end of the first support rod (2061) is fixedly connected to a first horizontal connecting plate (2062); the left end of the first horizontal connecting plate (2062) is connected to a first electric winding wheel (2067); the lower right end of the first horizontal connecting plate (2062) is connected to a second electric winding wheel (2068); a second horizontal connecting plate (2063) is located below the first horizontal connecting plate (2062); the upper end of the second horizontal connecting plate (2063) is hingedly connected to a V-shaped rod (2064); the V-shaped rod (2064) is hingedly connected to a first connecting rod on the left side and a first telescopic rod on the right side to form a V shape; the left end of the V-shaped rod (2064) is connected to the first connecting rod (2067) by a second pull rope (20611). The first through hole (2065) is provided on the right part of the V-shaped rod (2064); the first beating ball (2066) is connected to the right end of the V-shaped rod (2064); the second fixed pulley (2069) is connected to the right end of the second horizontal connecting plate (2063); the second fixed pulley (2069) is connected to the second electric winding wheel (2068) through a third pull rope (20612); the third pull rope (20612 passes through the first through hole (2065); the second support rod (20613) is fixedly connected to the lower end of the second horizontal connecting plate (2063); one end of the third spring (20610) is fixedly connected to the second support rod (20613); one end of the third pull rope (20612) is connected to the first telescopic rod, and the other end is connected to the second electric winding wheel (2068) through the second fixed pulley (2069); A load-bearing net (207), two ends of which are respectively connected to the two second horizontal connecting plates (2063), and the other end of the third spring (20610) is connected to the load-bearing net (207), and the load-bearing net (207) is used to place the ton bags (9) to be processed; A horizontal connecting rod (208), the right end of which passes through the left side wall of the processing box (201) and is fixedly connected to a beating block (2010), and the left end of which is fixedly connected to a second pushing ball (209); A third vertical rotating shaft (2011) is rotatably connected to the lower end of the processing box (201), and a first processing disk (2015) is fixedly connected to the upper end of the third vertical rotating shaft (2011), and a processing component is arranged on the first processing disk (2015); A horizontal support plate fixedly connected to the left side wall of the processing box (201); A fourth vertical rotating shaft (2012) is rotatably connected to the horizontal support plate, a second cam (2013) is fixedly connected to the upper end of the fourth vertical rotating shaft (2012), the second cam (2013) rotating shaft can push the second pushing ball (209) to move in the left and right directions, the fourth vertical rotating shaft (2012) is driven by a third driving motor, and the third vertical rotating shaft (2011) and the fourth vertical rotating shaft (2012) are driven by a belt transmission assembly; A fourth spring (2014) is sleeved on the horizontal connecting rod (208), the other end of the fourth spring (2014) is connected to the beating block (2010), and the other end is fixedly connected to the left inner wall of the processing box (201).

6. A sulfur paste feeding system according to claim 1, characterized in that: Also includes: A first force sensor, used for detecting the pulling force of the ton bag (9) on the electric hoist (12); A first angle detection device, used for detecting the angle between the ton bag (9) and the vertical plane when the ton bag (9) falls to contact the cutting knife (13); A speed sensor, used for detecting the falling speed of the ton bag (9) when the electric hoist (12) lowers the ton bag (9); A second force sensor is arranged at a contact surface between a beating component of the beating system (14) and the ton bag (9); A second angle detection device is used to detect the angle between the screen of the screening device and the horizontal plane. The screen of the screening device is adjusted by the angle adjustment device, and the screen is also accelerated by the screening beating device; A rotation speed sensor, used to detect the rotation speed of a scattering motor of the scattering system (22); A vibration frequency sensor, used to detect the vibration frequency of the screen; A controller is electrically connected to the first force sensor, the first angle detection device, the speed sensor, the second force sensor, the second angle detection device, the rotation speed sensor, the vibration frequency sensor, the second angle adjustment device, and the screening and beating device. The controller controls the second angle adjustment device and the screening and beating device to work based on the first force sensor, the first angle detection device, the speed sensor, the second force sensor, the second angle detection device, the rotation speed sensor, and the vibration frequency sensor, and includes: Calculating the discharge capacity coefficient of the sulfur paste in the ton bag (9) based on the first force sensor, the second force sensor, the first angle detection device, the speed sensor and the formula (1); ； Wherein, Q is the discharge capacity coefficient, v is the detection value of the speed sensor, g is the acceleration of gravity, A is the distance from the tip of the cutter to which the ton bag falls, and t is the unit time. is the detection value of the first force sensor at the initial moment of the detection time period T, is the detection value of the first force sensor at the end of the detection time period T, is the detection value of the second force sensor, is the detection value of the first force sensor when the ton bag is not falling. is the density of sulfur paste, is the number of beats per unit time of the beating system, B is the cross-sectional area of ​​the cutting knife at a distance A from the tip of the cutting knife, sin is the sine, is the average angle between two adjacent sides of the cutting knife tip, and lg is the logarithm with base 10; Based on the discharge capacity coefficient of the sulfur paste in the ton bag and the second angle detection device and the rotation speed sensor, the target angular velocity and the target vibration frequency are calculated using formulas (2) and (3) respectively, and the controller controls the angle adjustment device to periodically adjust the preset time at the target angular velocity. At the same time, the controller controls the screening and beating device to work so that the detection value of the vibration frequency sensor is within the preset range of the target vibration frequency. ； ； in, arcsin is the inverse sine, D is the mesh diameter of the screen, tan is the tangent, n is the detection value of the speed sensor, R is the average vertical distance between each crushing tooth in the crushing roller of the scattering system and the roller surface, h is the vertical distance between the center of the screen and the axis of the uppermost crushing roller of the scattering system in the initial state, is the detection value of the second angle detection device after initial installation; M is the target vibration frequency, S is the total area of ​​the mesh holes in the mesh, H is the distance between adjacent mesh holes in the mesh, and E is the thickness of the mesh. is the density of the sieve, and ln is the natural logarithm.

Images