Submerged arc sintered flux for stainless steel at low temperature and production device

Abstract

The invention relates to the technical field of sintered flux, in particular to stainless steel low-temperature submerged arc sintered flux and a production device. The submerged arc sintered flux is prepared from various dry powder and a binder. The dry powder comprises, by weight, 15%-20% of a rare earth fluoride composite system LaF3-CaF2, 20%-25% of nanometer modified aluminum oxide, 30%-35% of borosilicate glass, 5%-8% of rare earth oxide, 3%-5% of metal silicon-calcium alloy, 1%-2% of a nanometer titanium nitride grain refiner and 7%-10% of eucryptite. The optimal proportion is as follows: 218% of the fluorinated rare earth composite system LaF3-CaF2, 22% of the nano-modified aluminum oxide, 33% of the borosilicate glass body, 6.5% of the rare earth oxide, 4% of the silicon-calcium alloy, 1.5% of TiN and 9% of eucryptite. According to the submerged arc sintered flux, part of CaF2 is replaced with LaF3, the content of fluoride in the submerged arc sintered flux is reduced, and therefore pollution of the flux to the environment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sintered welding fluxes, and particularly to a submerged arc sintered welding flux for low temperature of stainless steel and a production device thereof. Background Art

[0002] Submerged arc sintered welding flux is a protective material that protects the metal welding area during the metal welding process, reduces the oxidation reaction in the welding area and participates in the metallurgical process. The raw materials of the submerged arc sintered welding flux include CaF 2 , SiO 2 , MgO, Al 2 O 3 and other components. Among them, CaF 2 is mainly used to reduce the viscosity and melting point of the slag, keep the slag in good fluidity during the welding process, and promote slag removal. However, too much fluoride will increase the impact on the atmospheric environment and cause environmental deterioration.

[0003] When the existing submerged arc sintered welding flux is produced, a variety of powder raw materials and a binder need to be evenly mixed first, and then prepared through production processes such as granulation, drying and sintering. Most of the powder transportation devices between the production processes of the submerged arc sintered welding flux use screw conveyors. Among them, during the process of transporting the mixed powder in the mixing tank to the granulator, due to the presence of the binder, the viscosity of the mixed powder material increases significantly. During the transportation by the screw conveyor, the screw conveyor will continuously squeeze the powder material it transports, making the powder material prone to agglomeration and caking during transportation, resulting in an increase in the rotational resistance of the screw blades inside the screw conveyor, and it is easy to occur that the screw blades are stuck and unable to rotate, ultimately resulting in the termination of material transportation and affecting the normal transportation of materials. Summary of the Invention

[0004] The present invention provides a submerged arc sintered welding flux for low temperature of stainless steel and a production device thereof to solve the problem that the existing transportation device is prone to material caking during the transportation of materials, affecting the normal transportation of materials.

[0005] The technical solution is: A submerged arc sintered welding flux for low temperature of stainless steel is prepared from a variety of dry powders and a binder. The weight ratio of each component in the dry powder is as follows: rare earth fluoride composite system LaF 3 -CaF 2 15 - 20%, nano-modified alumina 20 - 25%, borosilicate glass body 30 - 35%, rare earth oxide 5 - 8%, ferrosilicon calcium alloy 3 - 5%, nano-titanium nitride grain refiner 1 - 2% and lithium nepheline 7 - 10%;

[0006] Optimal ratio: rare earth fluoride composite system LaF 3 -CaF 218%, 22% of nano-modified alumina, 33% of borosilicate glass body, 6.5% of rare earth oxide, 4% of silicon-calcium alloy, 1.5% of TiN, and 9% of nepheline.

[0007] A production device for submerged arc sintering flux for low-temperature use of stainless steel. Based on the above-mentioned submerged arc sintering flux for low-temperature use of stainless steel, it includes:

[0008] A bracket, the bracket is fixedly connected with a feed shell and a discharge pipe, and the feed shell and the discharge pipe are fixedly connected and communicated.

[0009] A motor, fixedly connected to the bracket, the motor is fixedly connected with a transmission, and the output shaft of the motor is fixedly connected with the input shaft of the transmission.

[0010] A rotating shaft, fixedly connected to the output shaft of the transmission. A rotating shell is arranged on the rotating shaft, and a first auger is fixedly connected to the rotating shell.

[0011] A rotating frame, rotatably and sealingly slidably connected to the discharge pipe, the rotating frame is rotatably and slidably connected to the rotating shell, a second auger is fixedly connected to the rotating frame, and the second auger is in contact with the first auger.

[0012] A tension spring, a boss is arranged on the transmission, a rotating ring is rotatably connected to the rotating shell, and the tension spring is fixedly connected between the rotating ring of the rotating shell and the boss of the transmission.

[0013] A limiting component, arranged on the rotating shell, used to control the rotational relationship between the rotating shell and the rotating frame.

[0014] Furthermore, the limiting component includes:

[0015] A fixed ring, fixedly connected to the rotating shell, and the rotating shell is rotatably and slidably connected to the rotating frame.

[0016] There are multiple positioning rods, all slidably connected to the fixed ring. A first spring is fixedly connected between the positioning rod and the fixed ring. The positioning rod is provided with an arc portion. An annular groove is arranged on the discharge pipe, and the annular groove is used to catch the arc portion of the positioning rod. The rotating frame is provided with extrusion grooves with the same number as the positioning rods. The positioning rod slides in the adjacent extrusion grooves. The width of the extrusion groove decreases as the distance between it and the axis of the fixed ring increases. The side surface of the extrusion groove contacts the arc portion of the positioning rod.

[0017] A rotating component, arranged on the rotating shell, used to make the rotating frame rotate relative to the rotating shell and push the blocked material to move.

[0018] A lifting component is arranged on the rotating shell and is used to drive the rotating shell to reciprocate, so as to accelerate the speed of loosening the caked materials.

[0019] Furthermore, the rotating component includes:

[0020] A plurality of extrusion rods are all slidably connected to the rotating shell. A plurality of guide grooves are arranged on the rotating frame. The extrusion rods slide in the adjacent guide grooves. The extrusion rods drive the rotating frame to rotate relative to the rotating shell through the guide grooves. All the extrusion rods are commonly slidably connected with a connecting ring. The connecting ring is located on the moving path of the fixed ring. All the extrusion rods are commonly fixedly connected with an extrusion ring. A second spring is fixedly connected between the connecting ring and the extrusion ring;

[0021] A third spring. A rotating ring is rotatably connected to the rotating frame. The third spring is fixedly connected between the rotating ring of the rotating frame and the discharge pipe;

[0022] A guiding component is arranged on the connecting ring and is used to limit the rotation of the connecting ring.

[0023] Furthermore, the guide groove is composed of a straight groove and an arc groove.

[0024] Furthermore, the guiding component includes:

[0025] A guiding ring is fixedly connected to the connecting ring. The guiding ring is provided with circumferentially distributed convex blocks;

[0026] A positioning ring is fixedly connected to the discharge pipe. The guiding ring contacts with the positioning ring. The positioning ring is provided with circumferentially distributed grooves. The grooves of the positioning ring are used to limit the guiding blocks of the guiding ring. A damping is arranged between the positioning ring and the guiding ring.

[0027] Furthermore, the lifting component includes:

[0028] A plurality of transmission rods are all fixedly connected to the rotating shell. The end of the transmission rod far away from the rotating shell is a ball head;

[0029] A wave block is fixedly connected to the convex platform of the driver. The wave block makes the rotating shell reciprocate by extruding the transmission rod;

[0030] A reset component is arranged on the discharge pipe and is used to drive the rotating shell to reset after the blocked materials are cleared.

[0031] Furthermore, the reset component includes:

[0032] An electric push rod is fixedly connected to the bracket;

[0033] A reset frame is fixedly connected to the telescopic end of the electric push rod, the reset frame is used to push the rotating shell to reset, the reset frame is provided with a distance sensor, and the reset frame is located on the moving path of the extrusion ring.

[0034] Furthermore, it also includes:

[0035] A vibration assembly, the vibration assembly is arranged on the rotating shaft, and the vibration assembly is used to drive the rotating shell to vibrate to disperse the material when the rotating shell is blocked by the material and cannot move. The vibration assembly includes:

[0036] A transmission ring is fixedly connected to the rotating shaft, the rotating shell is rotatably and slidably connected to the rotating shaft, and the transmission ring is rotatably and slidably connected to the rotating shell;

[0037] The limit block is fixedly connected to the transmission ring. The rotating shell is provided with a vibration groove. The limit block is located in the vibration groove and slides. The vibration groove is used to drive the rotating shell to vibrate and destroy the agglomerated materials through the limit block.

[0038] Furthermore, the vibration groove is composed of a corrugated groove and a plurality of straight grooves distributed at intervals.

[0039] Compared with the prior art, the present invention has the following advantages: 1. The present invention uses LaF 3 Replacement of part of CaF 2 , reducing the fluoride content in a stainless steel low-temperature submerged arc sintering flux, thereby reducing the pollution of the flux to the environment during use.

[0040] 2. When agglomerated materials affect transportation, the tension spring drives the first and second auger to move in an offset manner to adjust the position of the materials, and the first auger rotates alone to loosen the agglomerated materials, thereby loosening the materials in the discharge pipe again to ensure normal transportation of the materials.

[0041] 3. In the process of the first auger and the second auger moving displaced from each other, the second auger is driven to rotate in the opposite direction by the extrusion rod, so that the second auger moves and adjusts the position of the agglomerated material, thereby facilitating the loosening of the agglomerated material.

[0042] 4. When the first auger cannot be rotated, the present invention drives the first auger to vibrate by cooperating with the limit block and the vibration groove, so that the agglomerated materials around the first auger are initially loosened, so that the first auger can move normally, thereby ensuring the normal cleaning of the agglomerated materials in the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0044] Figure 2Schematic three-dimensional structure diagram of the feed housing, discharge pipe and driver of the present invention;

[0045] Figure 3 Schematic three-dimensional structure diagram of the first auger, rotating frame and second auger of the present invention;

[0046] Figure 4 Schematic three-dimensional structure diagram of the guiding groove, electric push rod and reset frame of the present invention;

[0047] Figure 5 Schematic three-dimensional structure diagram of the fixing ring, extrusion ring and second spring of the present invention;

[0048] Figure 6 Schematic three-dimensional structure diagram of the rotating housing, transmission rod and wave block of the present invention;

[0049] Figure 7 Exploded three-dimensional structure diagram of the guiding ring and positioning ring of the present invention;

[0050] Figure 8 Exploded three-dimensional structure diagram of the rotating frame, fixing ring and positioning rod of the present invention;

[0051] Figure 9 Exploded three-dimensional structure diagram of the rotating frame and fixing ring of the present invention;

[0052] Figure 10 Schematic three-dimensional structure diagram of the vibration groove, wave block and transmission ring of the present invention;

[0053] Figure 11 Schematic cross-sectional view of the three-dimensional structure of the rotating housing, wave block and transmission ring of the present invention;

[0054] Figure 12 Schematic three-dimensional structure diagram of the rotating housing and vibration groove of the present invention.

[0055] Reference numerals in the drawings: 1 - support, 2 - feed housing, 3 - discharge pipe, 301 - annular groove, 4 - motor, 5 - driver, 6 - rotating shaft, 7 - rotating housing, 701 - vibration groove, 8 - first auger, 9 - rotating frame, 901 - extrusion groove, 902 - guiding groove, 10 - second auger, 11 - tension spring, 12 - fixing ring, 13 - positioning rod, 14 - first spring, 16 - extrusion rod, 17 - connecting ring, 18 - extrusion ring, 19 - second spring, 20 - guiding ring, 21 - positioning ring, 22 - transmission rod, 23 - wave block, 24 - third spring, 25 - transmission ring, 26 - limiting block, 28 - electric push rod, 29 - reset frame. Detailed description of the specific implementation

[0056] The preferred technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0057] A submerged arc sintered welding flux for low temperature use of stainless steel. The submerged arc sintered welding flux for low temperature use of stainless steel is prepared from a variety of dry powders and a binder. The weight ratio of each component in the dry powder is as follows: rare earth fluoride composite system LaF 3 -CaF 2 15 - 20%, nano-modified alumina 20 - 25%, borosilicate glass body 30 - 35%, rare earth oxide 5 - 8%, ferrosilicon calcium alloy 3 - 5%, nano-titanium nitride grain refiner 1 - 2% and leucite 7 - 10%;

[0058] Optimal ratio: rare earth fluoride composite system LaF 3 -CaF 2 18%, nano-modified alumina 22%, borosilicate glass body 33%, rare earth oxide 6.5%, ferrosilicon calcium alloy 4%, TiN 1.5% and leucite 9%.

[0059] As Figures 1 - 6 shown, it includes: a bracket 1, the bracket 1 is fixedly connected with a feed shell 2 and a discharge pipe 3, and the feed shell 2 and the discharge pipe 3 are fixedly connected and communicated; a motor 4, fixedly connected to the bracket 1, the motor 4 is fixedly connected with a transmission 5, and the output shaft of the motor 4 is fixedly connected with the input shaft of the transmission 5; a rotating shaft 6, fixedly connected to the output shaft of the transmission 5, a rotating shell 7 is arranged on the rotating shaft 6, and a first auger 8 is fixedly connected to the rotating shell 7; a rotating frame 9, rotatably and sealingly slidably connected to the discharge pipe 3, the rotating frame 9 is rotatably and slidably connected to the rotating shell 7, a second auger 10 is fixedly connected to the rotating frame 9, and the second auger 10 is in contact with the first auger 8; a tension spring 11, a boss is arranged on the transmission 5, a rotating ring is rotatably connected to the rotating shell 7, and the tension spring 11 is fixedly connected between the rotating ring of the rotating shell 7 and the boss of the transmission 5; a limiting component, arranged on the rotating shell 7, for controlling the rotational relationship between the rotating shell 7 and the rotating frame 9.

[0060] The above solution provides a method for ensuring the normal transportation of materials during the material conveying process. The auger (i.e., the spiral blade of the screw conveyor) is divided into two groups, the inner and the outer. When the auger cannot rotate due to material caking, the inner auger rotates independently to convey the materials. The feeding housing 2 is designed with a wide opening to facilitate manual addition of materials. A baffle can be provided at the lower part of the feeding housing 2. When the first auger 8 and the second auger 10 cannot rotate due to material caking, the baffle at the lower part of the feeding housing 2 automatically closes to block the connection between the feeding housing 2 and the discharge pipe 3, so as to reduce the accumulation of materials in the discharge pipe 3. As the material stock gradually decreases, the rotational resistance of the first auger 8 and the second auger 10 decreases accordingly. The transmission 5 is an existing speed reducer, and its specific structure will not be shown and described in detail. It is used to reduce the rotational speed output by the output shaft of the motor 4. In this embodiment, the rotating shaft 6 and the rotating housing 7 are slidably connected. During the process of the rotating shaft 6 driving the rotating housing 7 to rotate, the rotating housing 7 can slide reciprocally along the rotating shaft 6. The first auger 8 is located inside the second auger 10. In the initial state, the edges of the first auger 8 and the second auger 10 are in contact to jointly convey the materials. The left part of the rotating housing 7 is aligned with the left part of the rotating frame 9, and the tension spring 11 is in a state of stored energy. After the rotating frame 9 is stuck by the materials, it drives the rotating housing 7 to move downward to the right, causing the first auger 8 and the second auger 10 to be misaligned and pushing the materials to move, increasing the looseness of the materials.

[0061] Further, as Figure 5 , Figure 6 , Figure 8 and Figure 9 shown, the limiting component includes: a fixed ring 12, fixedly connected to the rotating housing 7. The rotating housing 7 is rotationally and slidably connected to the rotating frame 9. There are multiple positioning rods 13, all slidably connected to the fixed ring 12. A first spring 14 is fixedly connected between the positioning rod 13 and the fixed ring 12. The positioning rod 13 is provided with an arc-shaped portion. An annular groove 301 is provided on the discharge pipe 3, which is used to catch the arc-shaped portion of the positioning rod 13. The rotating frame 9 is provided with extrusion grooves 901 having the same number as the positioning rods 13. The positioning rods 13 slide in the adjacent extrusion grooves 901. The width of the extrusion groove 901 decreases as the distance between it and the axis of the fixed ring 12 increases. The side surface of the extrusion groove 901 contacts the arc-shaped portion of the positioning rod 13. A rotating component is provided on the rotating housing 7, which is used to rotate the rotating frame 9 relative to the rotating housing 7 to push the blocked materials to move. A lifting component is provided on the rotating housing 7, which is used to drive the rotating housing 7 to reciprocate to accelerate the loosening speed of the caked materials.

[0062] The above solution provides a way for the rotating shell 7 to be linked with the rotating frame 9 through the positioning rod 13. When the rotating frame 9 cannot rotate due to material jamming, the rotating shell 7 is separated from the rotating frame 9 and rotates independently. In this embodiment, there are three positioning rods 13, which are evenly distributed along the circumferential direction of the fixed ring 12. The first spring 14 is always in a compressed state to ensure the stability of the engagement between the positioning rod 13 and the annular groove 301. The side of the positioning rod 13 away from the fixed ring 12 is processed into an arc surface, and the cross-section of the extrusion groove 901 is similar to an isosceles trapezoid. When the rotating frame 9 is stuck, the rotating shell 7 continues to rotate, so that the inclined surface of the extrusion groove 901 extrudes the arc surface of the positioning rod 13, forcing the positioning rod 13 to disengage from the annular groove 301 and retract into the fixed ring 12, thereby releasing the linkage between the rotating shell 7 and the rotating frame 9. The annular groove 301 axially limits the fixed ring 12 and the rotating shell 7 by engaging the positioning rod 13 to prevent the pull spring 11 from accidentally pulling the rotating shell 7 to move.

[0063] Further, as Figures 3 - 6 shown, the rotating assembly includes: a plurality of extrusion rods 16, all of which are slidably connected to the rotating shell 7. A plurality of guide grooves 902 are provided on the rotating frame 9. The extrusion rods 16 slide in the adjacent guide grooves 902. The extrusion rods 16 drive the rotating frame 9 to rotate relative to the rotating shell 7 through the guide grooves 902. All the extrusion rods 16 are commonly slidably connected with a connecting ring 17. The connecting ring 17 is located on the moving path of the fixed ring 12. All the extrusion rods 16 are commonly fixedly connected with an extrusion ring 18. A second spring 19 is fixedly connected between the connecting ring 17 and the extrusion ring 18; a third spring 24, a rotating ring is rotatably connected to the rotating frame 9. The third spring 24 is fixedly connected between the rotating ring of the rotating frame 9 and the discharge pipe 3; a guiding assembly is arranged on the connecting ring 17 for restricting the rotation of the connecting ring 17.

[0064] Further, as Figure 4 、 Figure 8 and Figure 9 shown, the guide groove 902 is composed of a straight groove and an arc groove.

[0065] The above solution provides a way to drive the rotating frame 9 to rotate in the reverse direction to break up the caked material when the rotating shell 7 moves downward. In this embodiment, there are three extrusion rods 16, which are evenly distributed along the circumferential direction of the rotating shell 7. Initially, the extrusion rods 16 are located in the straight grooves of the guide grooves 902. When the fixed ring 12 pushes the connecting ring 17 to move, the connecting ring 17 drives the extrusion rods 16 to extrude the arc grooves of the guide grooves 902, causing the rotating frame 9 to rotate in the reverse direction. The second spring 19 is used to buffer the moving distance of the extrusion ring 18 when the rotating frame 9 cannot push the material to move, so that the fixed ring 12 can continue to push the connecting ring 17 to move on the premise that the extrusion ring 18 stops moving. The length of the guide groove 902 along the axis of the rotating shell 7 is less than the distance that the fixed ring 12 pushes the connecting ring 17 to move. The third spring 24 is used to push the rotating frame 9 to reset.

[0066] Furthermore, as Figures 3 - 7 shown, the guiding assembly includes: a guiding ring 20 fixedly connected to the connecting ring 17, the guiding ring 20 being provided with circumferentially distributed bumps; a positioning ring 21 fixedly connected to the discharge pipe 3, the guiding ring 20 being in contact with the positioning ring 21, the positioning ring 21 being provided with circumferentially distributed grooves, the grooves of the positioning ring 21 being used to limit the guiding blocks of the guiding ring 20, and a damping being provided between the positioning ring 21 and the guiding ring 20.

[0067] Furthermore, as Figures 4 - 6 and Figure 10 shown, the lifting assembly includes: a plurality of transmission rods 22, all fixedly connected to the rotating shell 7, the end of the transmission rod 22 away from the rotating shell 7 being a ball head; a wave block 23 fixedly connected to the convex platform of the transmission 5, the wave block 23 causing the rotating shell 7 to reciprocate by squeezing the transmission rods 22; a reset assembly provided on the discharge pipe 3 for driving the rotating shell 7 to reset after the blocked material is cleared.

[0068] The above solution provides a way to limit the moving direction of the connecting ring 17 and drive the rotating shell 7 to reciprocate, so that the second auger 10 gradually loosens the agglomerated material; initially, the bumps of the guiding ring 20 are located above the grooves of the positioning ring 21, which is used to enable the rotating frame 9 to drive the positioning ring 21 to rotate through the connecting ring 17 during rotation. The grooves of the positioning ring 21 are used to limit the guiding blocks of the guiding ring 20 when the fixed ring 12 squeezes the connecting ring 17, so that the connecting ring 17 cannot rotate. Chamfers are provided on the opposite sides of the bumps of the guiding ring 20 and the grooves of the positioning ring 21, which is used to facilitate the bumps of the guiding ring 20 to enter the grooves of the positioning ring 21 and prevent the guiding ring 20 from sliding unexpectedly during the normal rotation of the rotating frame 9 and affecting the normal operation of the device. In this embodiment, the number of the transmission rods 22 is four, and the ball heads of the transmission rods 22 are used to reduce the wear during the extrusion with the wave block 23.

[0069] Furthermore, as Figure 3 and Figure 4 shown, the reset assembly includes: an electric push rod 28 fixedly connected to the bracket 1; a reset frame 29 fixedly connected to the telescopic end of the electric push rod 28, the reset frame 29 being used to push the rotating shell 7 to reset, the reset frame 29 being provided with a distance sensor, and the reset frame 29 being located on the moving path of the extrusion ring 18.

[0070] The above solution provides a way to drive the rotating shell 7 to move reversely and reset after the blocked material in the discharge pipe 3 is dredged; initially, the telescopic end of the electric push rod 28 is in the extended state; during the process of the fixed ring 12 pushing the connecting ring 17 to move, the distance sensor of the reset frame 29 judges the dredging situation of the blocked material near the rotating frame 9 by detecting the distance between the extrusion ring 18 and the reset frame 29, and when the distance between the extrusion ring 18 and the reset frame 29 reaches a specified value (this distance can be set according to the actual situation), the distance sensor starts the electric push rod 28.

[0071] Workflow: After various raw materials of the flux are wet-mixed (hereinafter referred to as materials), hereinafter, the movement direction along the axis of the discharge pipe 3 is described as the left-right direction. The staff pours the materials in the mixing tank into the feed shell 2, and the materials enter the discharge pipe 3 through the feed shell 2. Then, the staff starts the motor 4, and the output shaft of the motor 4 drives the rotating shaft 6 to rotate counterclockwise ( Figure 1 , viewed from right to left), the rotating shaft 6 drives the first auger 8 to rotate through the rotating shell 7, the rotating shell 7 drives the positioning rod 13 and the first spring 14 to rotate through the fixed ring 12, the positioning rod 13 drives the rotating frame 9 to rotate circumferentially along the extrusion groove 901, and the rotating frame 9 drives the second auger 10 and other parts thereon to rotate together, so that the second auger 10 cooperates with the first auger 8 to convey the materials together. The materials move leftward along the discharge pipe 3, are discharged and enter the next process.

[0072] During the above process of conveying materials, when the materials are squeezed and agglomerated, the resistance of the first auger 8 and the second auger 10 to convey the materials and move gradually increases until the second auger 10 is stuck by the agglomerated materials, the second auger 10 stops rotating, the rotating frame 9 stops rotating, the rotating shaft 6 continues to drive the rotating shell 7 to rotate, the rotating shell 7 continues to drive the fixed ring 12 to rotate, the fixed ring 12 drives the positioning rod 13 to rotate, and the positioning rod 13 rotates and is gradually squeezed into the fixed ring 12 by the extrusion groove 901, so that the positioning rod 13 is gradually separated from the annular groove 301 and compresses the first spring 14. Until after the positioning rod 13 is separated from the annular groove 301, the fixed ring 12 continues to drive the positioning rod 13 to rotate and squeeze the extrusion groove 901, so that the positioning rod 13 continues to compress the first spring 14 under the action of the extrusion groove 901. When the positioning rod 13 is separated from the extrusion groove 901, the positioning rod 13 releases the limit of the fixed ring 12 and completely enters it. The rotating shell 7 drives the first auger 8 and the parts thereon to move rightward under the pull of the tension spring 11. During this process, the rotating shaft 6 always drives the first auger 8 to rotate through the rotating shell 7 to break the agglomerated materials.

[0073] During the process of the above-mentioned tension spring 11 driving the rotation housing 7 to move, the rotation housing 7 drives the fixed ring 12 and the transmission rod 22 to move synchronously. When the fixed ring 12 contacts the connection ring 17, the fixed ring 12 pushes the connection ring 17 to move, causing the connection ring 17 to drive the guide ring 20 to move to the right. The convex block of the guide ring 20 gradually enters the groove of the positioning ring 21 (if the convex block of the guide ring 20 is aligned with the groove of the positioning ring 21, after the two contact, the convex block of the guide ring 20 enters the groove of the positioning ring 21 by squeezing the inclined surface between the two). At the same time, the connection ring 17 drives the extrusion ring 18 to move synchronously through the second spring 19, and the extrusion ring 18 drives the extrusion rod 16 to move to the right, causing the extrusion rod 16 to move along the straight groove of the guide groove 902. When the extrusion rod 16 separates from the straight groove of the guide groove 902, the extrusion rod 16 enters the arc groove of the guide groove 902. At this time, the convex block of the guide ring 20 enters the groove of the positioning ring 21 to complete the limit, so that the extrusion rod 16 will not rotate along the arc groove of the guide groove 902. At this time, the right end of the transmission rod 22 is flush with the peak of the wave block 23.

[0074] After the above-mentioned extrusion rod 16 enters the arc groove of the guide groove 902, the extrusion rod 16 causes the rotating frame 9 to rotate clockwise (viewed from right to left) by extruding the guide groove 902. The rotating frame 9 drives the second auger 10 to rotate in the reverse direction, adjusting the position where the second auger 10 contacts the blocked material, so that the position of the blocked material changes. During this process, the transmission rod 22 gradually penetrates into the wave surface of the wave block 23.

[0075] During the process of driving the second auger 10 to rotate in the reverse direction mentioned above, when the second auger 10 cannot continue to rotate in the reverse direction due to material obstruction, the rotating frame 9 stops rotating. At this time, the extrusion rod 16 squeezes the rotating frame 9 to the right, causing the rotating frame 9 to drive the parts on it to move to the right and compress the third spring 24, so as to further adjust the position where the second auger 10 contacts the blocked material. When the second auger 10 cannot move downward, both the extrusion rod 16 and the extrusion ring 18 stop moving. At this time, the fixed ring 12 continues to push the connection ring 17 to move and compress the second spring 19 until the transmission rod 22 contacts the trough of the wave block 23, and then the rotation housing 7 stops moving to the right and contacts the reset frame 29.

[0076] After the above-mentioned rotating shell 7 stops moving to the right, as the rotating shaft 6 drives the rotating shell 7 to rotate, the transmission rod 22 moves reversely to the left under the extrusion of the wave block 23 and stretches the tension spring 11. The rotating shell 7 drives the fixed ring 12 to move to the left, and the extrusion force of the fixed ring 12 on the connecting ring 17 decreases. The second spring 19 pushes the connecting ring 17 to move reversely. Then, the third spring 24 pushes the rotating frame 9 to move to the left and rotate reversely, so that the guiding groove 902 extrudes the extrusion rod 16 reversely. The extrusion rod 16 drives the extrusion ring 18 and the parts thereon to move reversely. Until the transmission rod 22 moves to the peak position of the wave block 23, the rotating shell 7 stops moving. At this time, the extrusion rod 16 moves to the left part of the arc groove on the guiding groove 902. Then, the rotating shell 7 repeats the above process and moves left and right continuously, so that the rotating frame 9 and the second auger 10 move and rotate continuously to accelerate the loosening of the caked material.

[0077] During the process of loosening the material above, as the caked material is continuously loosened, the movable distance of the second auger 10 increases continuously, and the moving distance of the extrusion ring 18 increases continuously. When the caked material is completely loosened, the movable distance of the second auger 10 reaches the maximum. As the extrusion ring 18 moves to the right, when the extrusion ring 18 moves to the rightmost part, after the distance between the extrusion ring 18 and the distance sensor on the reset frame 29 reaches the specified value, the distance sensor transmits a signal and activates the electric push rod 28. The telescopic end of the electric push rod 28 drives the reset frame 29 to move to the left. When the reset frame 29 contacts the rotating shell 7, the reset frame 29 pushes the rotating shell 7 to move to the left for reset and stretches the tension spring 11. The third spring 24 pushes the rotating frame 9 to move for reset. The rotating frame 9 drives the extrusion rod 16 and the parts thereon to move until the telescopic end of the electric push rod 28 is completely retracted, the rotating shell 7 completes the reset, the rotating frame 9 and the parts thereon complete the reset, the telescopic end of the electric push rod 28 drives the reset frame 29 to move reversely for reset, the device completes the reset, the second auger 10 and the first auger 8 are fitted again to loosen the material. When the discharge pipe 3 is blocked by caking again, repeat the above process of loosening the caked material until the material conveying is completed, and the staff turns off the motor 4 to stop the device.

[0078] Further, as Figures 10 - 12 shown, it further includes: a vibration assembly. The vibration assembly is arranged on the rotating shaft 6. The vibration assembly is used to drive the rotating shell 7 to vibrate to disperse the material when the rotating shell 7 is blocked by the material and cannot move. The vibration assembly includes: a transmission ring 25, fixedly connected to the rotating shaft 6. The rotating shell 7 is rotationally and slidably connected to the rotating shaft 6, and the transmission ring 25 is rotationally and slidably connected to the rotating shell 7; a limit block 26, fixedly connected to the transmission ring 25. A vibration groove 701 is arranged on the rotating shell 7, and the limit block 26 is located in the vibration groove 701 and slides therein. The vibration groove 701 is used to drive the rotating shell 7 to vibrate through the limit block 26 and break the caked material.

[0079] Further, asFigures 10 - 12 As shown, the vibration groove 701 is composed of a corrugated groove and a plurality of straight grooves distributed at intervals.

[0080] The above solution provides a way that when the rotating shell 7 is stuck by materials and cannot move downward, it drives the rotation of the rotating shell 7; in this embodiment, the rotating shell 7 is slidably and rotationally connected to the rotating shaft 6; the limiting block 26 is a hemispherical head, and in this embodiment, there are three limiting blocks 26 evenly distributed circumferentially. Hereinafter, one limiting block 26 will be taken as an example for description. The vibration groove 701 is composed of a corrugated groove and three straight grooves evenly distributed circumferentially, and the connection between the straight groove and the corrugated groove is at the trough position of the corrugated groove. The straight groove of the vibration groove 701 is used to cooperate with the limiting block 26 to drive the rotation of the rotating shell 7, and the corrugated groove of the vibration groove 701 is used to cooperate with the limiting block 26 to drive the reciprocating movement of the rotating shell 7 to break the materials. Moreover, the length of the straight groove in the vibration groove 701 is greater than the distance between the wave crest and the wave trough in the wave block 23, which is used to enable the limiting block 26 to drive the rotating shell 7 to perform reciprocating movement through this set of straight grooves. Initially, the limiting block 26 is located at the trough position of the corrugated groove in the vibration groove 701, so that the limiting block 26 drives the rotation of the rotating shell 7 by squeezing the corrugated groove of the vibration groove 701. During the normal rotation of the rotating shell 7 and the rotating frame 9, the positioning rod 13 is located in the extrusion groove 901, making the fixed ring 12 unable to move, so that the limiting block 26 cannot drive the movement of the rotating shell 7 by squeezing the vibration groove 701.

[0081] Working process: When it is necessary to convey materials, the staff starts the motor 4. At this time, the rotating shaft 6 drives the rotation of the rotating shell 7 through the transmission ring 25 and the limiting block 26, so that the rotating shell 7 drives the fixed ring 12 to rotate synchronously, and the first auger 8 and the second auger 10 rotate to convey materials.

[0082] During the above process of conveying materials, when the second auger 10 is stuck by materials, as the rotating shell 7 and the rotating frame 9 rotate relative to each other, the positioning rod 13 retracts into the fixed ring 12 under the action of the extrusion groove 901, and the tension spring 11 pulls the rotating shell 7 to move to the right. During this process, if the rotating shaft 6 can drive the continuous rotation of the rotating shell 7 through the transmission ring 25 and the limiting block 26 without being stuck by materials, the limiting block 26 slides along the straight groove of the vibration groove 701, and the wave block 23 repeats the above process to squeeze the transmission rod 22, so that the extrusion rod 16 drives the second auger 10 to rotate and move reciprocally to loosen the agglomerated plastics.

[0083] If the rotational resistance of the first auger 8 increases, resulting in the inability of the rotating shaft 6 to drive the rotating shell 7 to rotate, then the rotating shaft 6 drives the limiting block 26 to rotate relative to the rotating shell 7. The rotating shaft 6 presses the corrugated groove of the vibration groove 701 through the limiting block 26, causing the rotating shell 7 to drive the first auger 8 to vibrate and loosen the caked material. Until the rotational resistance of the rotating shell 7 decreases and the limiting block 26 enters the right part of the straight groove on the vibration groove 701, the tension spring 11 drives the rotating shell 7 to move to the right, causing the limiting block 26 to move along the straight groove of the vibration groove 701, so that the rotating shell 7 repeats the above process to drive the second auger 10 to move and loosen the material.

[0084] When the caked material is completely loosened, the telescopic end of the electric push rod 28 drives the rotating shell 7 to move to the left and reset through the reset frame 29, so that the limiting block 26 moves to the trough position of the corrugated groove on the right part of the vibration groove 701 again to complete the reset.

[0085] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A submerged arc sintering flux for low temperature stainless steel, characterized in that: The submerged arc sintering flux for low temperature stainless steel is prepared from a variety of dry powders and a binder, wherein the weight proportion of each component in the dry powder is: fluoride rare earth composite system LaF3-CaF215-20%, nano-modified alumina 20-25%, borosilicate glass 30-35%, rare earth oxide 5-8%, metal silicon calcium alloy 3-5%, nano titanium nitride grain refiner 1-2% and eucryptite 7-10%; The optimal proportion: fluoride rare earth composite system LaF3-CaF2 18%, nano-modified alumina 22%, borosilicate glass 33%, rare earth oxide 6.5%, silicon-calcium alloy 4%, TiN 1.5% and eucryptite 9%.

2. A production device for stainless steel low temperature submerged arc sintering flux, according to claim 1, characterized in that: Included are: A bracket (1), wherein the bracket (1) is fixedly connected with a feed shell (2) and a discharge pipe (3), and the feed shell (2) and the discharge pipe (3) are fixedly connected and communicated with each other; A motor (4) is fixedly connected to the bracket (1); the motor (4) is fixedly connected to a transmission (5); an output shaft of the motor (4) is fixedly connected to an input shaft of the transmission (5); A rotating shaft (6) is fixedly connected to the output shaft of the transmission device (5); a rotating shell (7) is arranged on the rotating shaft (6); and a first auger (8) is fixedly connected to the rotating shell (7); A rotating frame (9) is rotatably and sealingly slidably connected to the discharge pipe (3), the rotating frame (9) is rotatably and slidably connected to the rotating shell (7), and the rotating frame (9) is fixedly connected to a second auger (10). The second auger (10) is in contact with the first auger (8); A tension spring (11), a boss is provided on the transmission device (5), the rotating shell (7) is rotatably connected with a rotating ring, and the tension spring (11) is fixed between the rotating ring of the rotating shell (7) and the boss of the transmission device (5); A limit assembly is arranged on the rotating shell (7) and is used to control the rotational relationship between the rotating shell (7) and the rotating frame (9).

3. The production device of a stainless steel low temperature submerged arc sintering flux according to claim 2, characterized in that: The limit assembly includes: A fixed ring (12) is fixedly connected to the rotating shell (7), and the rotating shell (7) is rotatably and slidably connected to the rotating frame (9); A plurality of positioning rods (13) are provided, all of which are slidably connected to the fixing ring (12); a first spring (14) is fixedly connected between the positioning rod (13) and the fixing ring (12); the positioning rod (13) is provided with an arc-shaped portion; an annular groove (301) is provided on the discharge pipe (3); the annular groove (301) is used to clamp the arc-shaped portion of the positioning rod (13); the rotating frame (9) is provided with extrusion grooves (901) of the same number as the positioning rod (13); the positioning rod (13) is located in an adjacent extrusion groove (901) and slides; the width of the extrusion groove (901) decreases as the distance between the extrusion groove and the axis of the fixing ring (12) increases; and the side surface of the extrusion groove (901) contacts the arc-shaped portion of the positioning rod (13); A rotating assembly, arranged on the rotating shell (7), used to rotate the rotating frame (9) relative to the rotating shell (7) to push the blocked material to move; The lifting assembly is arranged on the rotating shell (7) and is used to drive the rotating shell (7) to move back and forth, thereby accelerating the speed of loosening the agglomerated materials.

4. The production device of a stainless steel low temperature submerged arc sintering flux according to claim 3, characterized in that: The rotating assembly comprises: A plurality of extrusion rods (16) are all slidably connected to the rotating shell (7); a plurality of guide grooves (902) are provided on the rotating frame (9); the extrusion rods (16) are located in adjacent guide grooves (902) and slide; the extrusion rods (16) drive the rotating frame (9) to rotate relative to the rotating shell (7) through the guide grooves (902); all the extrusion rods (16) are slidably connected to a connecting ring (17); the connecting ring (17) is located on the moving path of the fixed ring (12); all the extrusion rods (16) are fixedly connected to an extrusion ring (18); a second spring (19) is fixedly connected between the connecting ring (17) and the extrusion ring (18); a third spring (24), the rotating frame (9) being rotatably connected to a rotating ring, the third spring (24) being fixedly connected between the rotating ring of the rotating frame (9) and the discharge pipe (3); A guide assembly is arranged on the connecting ring (17) and is used to limit the rotation of the connecting ring (17).

5. The production device of a stainless steel low temperature submerged arc sintering flux according to claim 4, characterized in that: The guide groove (902) consists of a straight groove and an arc groove.

6. The production device of a stainless steel low temperature submerged arc sintering flux according to claim 5, characterized in that: The guide assembly comprises: A guide ring (20) is fixedly connected to the connecting ring (17), and the guide ring (20) is provided with circumferentially distributed protrusions; A positioning ring (21) is fixedly connected to the discharge pipe (3); the guide ring (20) is in contact with the positioning ring (21); the positioning ring (21) is provided with circumferentially distributed grooves; the grooves of the positioning ring (21) are used to limit the guide block of the guide ring (20); and damping is provided between the positioning ring (21) and the guide ring (20).

7. The production device of a stainless steel low temperature submerged arc sintering flux according to claim 6, characterized in that: The lifting assembly comprises: A plurality of transmission rods (22) are all fixedly connected to the rotating shell (7), and one end of the transmission rod (22) away from the rotating shell (7) is a ball head; A wave block (23) is fixedly connected to the boss of the transmission device (5), and the wave block (23) causes the rotating shell (7) to reciprocate by squeezing the transmission rod (22); A reset component is arranged on the discharge pipe (3) and is used to drive the rotating shell (7) to reset after the blocked material is cleared.

8. The production device of a stainless steel low temperature submerged arc sintering flux according to claim 7, characterized in that: The reset component includes: An electric push rod (28) fixedly connected to the bracket (1); A reset frame (29) is fixedly connected to the telescopic end of the electric push rod (28). The reset frame (29) is used to push the rotating shell (7) to reset. The reset frame (29) is provided with a distance sensor. The reset frame (29) is located on the moving path of the extrusion ring (18).

9. The production device of a stainless steel low temperature submerged arc sintering flux according to claim 8, characterized in that: Also included are: A vibration assembly, the vibration assembly is arranged on the rotating shaft (6), and the vibration assembly is used to drive the rotating shell (7) to vibrate to disperse the material when the rotating shell (7) is blocked by the material and cannot move. The vibration assembly includes: A transmission ring (25) is fixedly connected to the rotating shaft (6), the rotating shell (7) is rotatably and slidably connected to the rotating shaft (6), and the transmission ring (25) is rotatably and slidably connected to the rotating shell (7); a limit block (26) is fixedly connected to the transmission ring (25), a vibration groove (701) is provided on the rotating shell (7), the limit block (26) is located in the vibration groove (701) and slides, and the vibration groove (701) is used to drive the rotating shell (7) to vibrate and destroy agglomerated materials through the limit block (26).

10. The production device of a stainless steel low temperature submerged arc sintering flux according to claim 9, characterized in that: The vibration groove (701) is composed of a corrugated groove and a plurality of straight grooves distributed at intervals.

Images