A cement production raw material drying processing device and drying method

Abstract

The invention relates to the technical field of cement raw material production, and specifically discloses a cement production raw material drying and processing device, comprising a support frame and a drying cylinder rotatably arranged on the support frame, the drying cylinder comprising a cylinder body and lifting plates evenly distributed on the inner wall of the cylinder body, and also comprising: two bidirectional augers and screening plates, both of which are rotatably arranged on the inner wall of the cylinder body and used for conveying the cement raw materials on the bidirectional augers to the middle of the cylinder body, a transmission mechanism is installed between the bidirectional augers and the cylinder body, and is used for making the cylinder body and the bidirectional augers run synchronously; the screening plates are resettably rotatably arranged on the lifting plates close to the middle of the cylinder body, and a blocking member is arranged in the middle of the drying cylinder; the invention wraps the dry cement raw materials with the outside of the wet large particles through the mixing cylinder, absorbs the moisture inside the large particles, accelerates the drying of the large-particle cement raw materials, and the large-particle materials fall on the bidirectional augers and enter the mixing cylinder for mixing after being crushed again, so as to ensure that the cement raw materials are as dry as possible.

Description

Technical Field

[0001] The invention relates to the technical field of cement raw material production, and in particular to a cement production raw material drying processing device and a drying method thereof. Background Art

[0002] At present, the cement production process mainly involves crushing and pre-homogenization, raw material preparation, raw material homogenization, preheating and decomposition, cement clinker burning, cement grinding, cement packaging and other processes. Among them, the raw material preparation includes the process from raw material crushing to the blending of ingredients to meet the requirements of raw material. There are two methods for raw material preparation: dry method and wet method. In the dry method preparation process, large hard raw materials such as limestone are first crushed into blocks of about 100mm in size according to traditional processes, or crushed into blocks less than 25mm for the second time. Cement raw materials and other water-containing raw materials should be dried and then sent to the mill in proportion with limestone, iron ore, etc., ground into fine raw material powder, and input into the mixing warehouse, where they are stirred with compressed air and adjusted into qualified raw material powder.

[0003] The Chinese patent application document with the publication number CN113503705A discloses a cement raw material drying device for cement processing, which includes a box body, a motor is fixedly installed on the left end of the box body, a driving bevel gear is fixedly installed on the end of the rotating shaft of the motor, a driven bevel gear is meshed on the right side of the driving bevel gear, a square block is clamped inside the driven bevel gear, a connecting shaft is fixedly connected to the right end of the square block, a drying cylinder is fixedly connected to the right end of the connecting shaft, and an exhaust hole is opened at the left end of the drying cylinder; a cylinder cover is rotatably connected to the right end of the drying cylinder, and a support pipe is fixedly connected to the middle part of the cylinder cover. The invention adopts a rotary drying cylinder, and the drying cylinder is designed with stirring blades, scrapers and other components, so that the cement raw materials can be tumbled and dried. By installing an air pump on the cylinder cover of the drying cylinder, the air pump transmits hot air to the support pipe designed on the cylinder cover, which can achieve better drying effect, and the hot air can be circulated to avoid excessive heat waste.

[0004] In the above technical solution, when the cement raw materials are dried, the cement raw materials will clump. A short drying time will result in the cement raw materials not being completely dried. Although a long drying time can dry the blocky cement raw materials, the drying efficiency will be relatively low. Summary of the invention

[0005] The present invention provides a cement production raw material drying processing device and a drying method thereof, aiming to solve the problem of low efficiency in drying cement raw materials in the related art.

[0006] The drying and processing device for cement production raw materials comprises a support frame and a drying drum rotatably arranged on the support frame, the drying drum comprises a cylinder body and a lifting plate evenly distributed on the inner wall of the cylinder body, and also comprises: two bidirectional augers and a screening plate, the two bidirectional augers are rotatably arranged on the inner wall of the cylinder body and are used to convey the cement raw materials to the middle of the cylinder body, the transmission mechanism is installed between the bidirectional augers and the cylinder body, which is used to make the cylinder body and the bidirectional augers run synchronously, the screening plate is resettably rotatably arranged on the lifting plate near the middle of the cylinder body, and a blocking member is provided in the middle of the drying drum to keep the screening plate away from the lifting plate, the crushing plate is provided on the bidirectional augers, which is used to crush the screened material of the screening plate, and a mixing drum is provided at the bottom of the crushing plate, a mixing assembly is rotatably arranged in the mixing drum, which is used to mix the crushed cement raw materials with the dried cement raw materials, and a driving assembly for driving the bidirectional augers to slide along the axial direction of the cylinder is provided inside the cylinder body, and the driving assembly synchronously drives the mixing assembly to run.

[0007] After the cement raw materials are put into the drying drum, they are dried while moving from one end to the other end driven by the lifting plate. When the lifting plate lifts the cement raw materials, some large particles fall on the two-way auger for transportation. When passing through the auger, under the action of the auger blades, some of the dry materials on the surface of the cement raw materials are peeled off and finally fall into the mixing drum. The large particles that are not lifted by the lifting plate stay in the middle of the drying drum and are picked up when passing through the screening plate. When the screening plate passes through the blocking member, the screening plate is opened and the large particles fall into the mixing drum. When the large particles fall, they will be crushed by the crushing plate. The large particles after crushing expose the wet part inside and are mixed with other dry materials under the action of the mixing component to proceed. In order to accelerate the drying of large-particle materials, the mixing component will continue to dry the mixed materials after discharging them. When this part of large-particle materials moves toward one end of the drying cylinder, they are lifted up again by the lifting plate and fall on the two-way auger. The large-particle materials are dropped by the two-way auger and continue to be crushed when passing through the crushing plate. If the large-particle materials are completely dried, they will be crushed into small particles by the crushing plate. If the large-particle materials are not dried yet, the wet parts inside will be exposed and continue to mix with the dry materials in the mixing cylinder to accelerate the discharge of water in the wet materials. Before the large-particle materials are completely dried, they will enter the mixing cylinder for drying. Small-particle materials are discharged from the trough drying cylinder. The above operations can accelerate the drying of cement raw materials and ensure that the materials are thoroughly dried.

[0008] Preferably, the drying cylinder also includes a driving device, which includes a driving motor, a driving gear and a driven gear, wherein the driving gear is installed at the movable end of the driving motor, the driving gear is meshed with the driven gear, and the driven gear is sleeved on the outer periphery of the cylinder and fixedly connected to the cylinder; the cylinder is driven to rotate by the driving device.

[0009] Preferably, a feed port is provided at one end of the cylinder, and a discharging assembly is provided at the other end, wherein the discharging assembly includes a discharging sleeve, a discharging auger, a discharging gear and a discharging gear ring, wherein the discharging sleeve is fixedly arranged on a support frame, the discharging auger is rotatably arranged in the discharging sleeve, the discharging gear is installed on the rotating shaft of the discharging auger, and the discharging gear ring is opened on the inner wall of the cylinder and meshes with the discharging gear; by arranging the discharging assembly, the material is assisted to be discharged.

[0010] Preferably, the transmission mechanism includes a power gear ring, a transmission gear and a power gear, the power gear ring is fixedly arranged on the cylinder body, the transmission gear is installed on the support frame and meshes with the power gear ring, and power gears are installed on the rotating shafts of the two bidirectional augers, the two power gears mesh with each other, and one of the power gears meshes with the transmission gear; when the drying cylinder rotates, power is transmitted to the bidirectional augers and drives the bidirectional augers to operate.

[0011] Preferably, the screen plate is rotatably arranged at the discharge end of the lifting plate, a torsion spring is installed between the screen plate and the lifting plate, a receiving plate is arranged above the two bidirectional augers, the receiving plate is fixedly arranged on the support frame, and a top block that can contact with the blocking rod is arranged at the bottom of the screen plate; the screen plate is used to lift up most of the large particles when passing through the middle of the drying cylinder.

[0012] Preferably, the driving assembly includes a first slider, a first closed-loop elliptical groove and a connecting rod, the first slider is fixedly arranged on the support frame, the first closed-loop elliptical groove is opened on the outer wall of the end of the two-way auger, the connecting rod is hinged to the auger shaft of the two-way auger, and the two two-way augers both penetrate the support frame and are slidably connected to the support frame.

[0013] Preferably, the mixing assembly includes a second slider, a mixing auger and a second closed-loop elliptical groove, the second slider is fixedly arranged on the connecting rod, the mixing auger is rotatably arranged in the mixing barrel, a mounting platform is fixedly arranged in the middle of the mixing auger, the second closed-loop elliptical groove is opened on the outer periphery of the mounting platform, and the second slider is slidably arranged in the second closed-loop elliptical groove; the dry material and the wet material falling into the mixing barrel are mixed by the mixing assembly and then discharged from the mixing barrel.

[0014] A drying method for a cement production raw material drying processing device comprises the following steps:

[0015] S1. Put the cement raw materials to be dried into the drying drum from the feed port for drying; S2. Under the action of the lifting plate, the cement raw materials are lifted in the drying drum, and some large particles fall on the bidirectional auger. The bidirectional auger removes the dried surface of the large particles and then enters the mixing drum;

[0016] S3. When the large particles move to the middle of the cylinder, the screen plate lifts the large particles. When passing through the blocking member, the screen plate rotates to make the large particles fall into the mixing cylinder.

[0017] S4. When the bidirectional auger rotates, it drives the crushing plate to rotate, and the large particles of materials are crushed by the crushing plate when they fall into the mixing barrel, exposing the wet parts inside;

[0018] S5, the bidirectional auger operates the driving component and drives the mixing component to operate, and the wet part of the large particle material is mixed with the dry part through the operation of the mixing component to accelerate the drying of the large particle material;

[0019] S6. After the material is discharged from the mixing assembly, it moves toward one end of the cylinder, is lifted up by the lifting plate, and is crushed by the crushing plate under the drive of the two-way auger and mixed with the dry material in the mixing cylinder. If the large particles are completely dried, they will be crushed by the crushing plate to form small particles and discharged from the cylinder.

[0020] By using the drying method of the cement production raw material drying processing device, when drying the cement raw materials, not only can the cement raw materials be dried more thoroughly, but also the drying time of the cement raw materials can be accelerated and the consumption of heat energy can be reduced.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are:

[0022] 1. Put the cement raw materials into the feeding port of the drying drum, dry the cement raw materials through the drying drum and move them to the discharging assembly, the lifting plate drives the cement raw materials to the top of the drum and drops them on the bidirectional auger, the bidirectional auger moves the large-particle cement raw materials dropped thereon toward the middle of the drum, when the large-particle cement raw materials move on the bidirectional auger, the friction of the bidirectional auger can grind off the external dry cement raw materials as much as possible, and a screening plate is set on the lifting plate near the middle to make as many large-particle cement as possible fall from the middle of the raw material drum, when the large-particle cement raw materials fall, they are crushed by the crushing plate to expose the wet inside and finally fall into the mixing drum, the wet large particles are wrapped with the dry cement raw materials by the mixing drum to absorb the moisture inside the large particles, and the drying of the large-particle cement raw materials is accelerated;

[0023] 2. When there are still large particles in the cement raw materials flowing out of the mixing drum, when the large particles of cement raw materials pass through the two-way auger close to one end of the discharging assembly, they are lifted up by the lifting plate and fall on the two-way auger and are crushed again before entering the mixing drum for mixing to ensure that the cement raw materials are as dry as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a drying drum and a driving device of the present invention.

[0025] Figure 2 It is a schematic diagram of the structure inside the drying drum of the present invention.

[0026] Figure 3 It is a schematic structural diagram of the transmission mechanism and the discharging assembly of the present invention.

[0027] Figure 4 It is a schematic structural diagram of the cooperation between the striking assembly and the bidirectional auger of the present invention.

[0028] Figure 5 It is a schematic structural diagram of the blocking member and the screen plate of the present invention.

[0029] Figure 6 The present invention is a schematic diagram of the matching structure of the screening plate and the lifting plate.

[0030] Figure 7 It is a schematic diagram of the structure of the driving assembly of the present invention.

[0031] Figure 8 It is a schematic diagram of the structure of the mixing assembly of the present invention.

[0032] Fig. 9 It is a schematic diagram of the structure of the power gear and the bidirectional auger of the present invention.

[0033] Figure numerals: 1. drying cylinder; 11. cylinder body; 12. lifting plate; 13. driving device; 14. discharging assembly; 141. discharging sleeve; 142. discharging auger; 143. discharging gear; 144. discharging gear ring; 2. two-way auger; 21. receiving plate; 3. transmission mechanism; 31. power gear ring; 32. transmission gear; 33. power gear; 34. protrusion; 35. slideway; 4. blocking member; 5. crushing plate; 6. mixing cylinder; 7. mixing assembly; 71. second slider; 72. mixing auger; 73. second closed-loop elliptical groove; 8. driving assembly; 81. first slider; 82. first closed-loop elliptical groove; 83. connecting rod; 9. screening plate. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0035] like Figure 1-Figure 9As shown, a cement production raw material drying and processing device includes a support frame and a drying drum 1 rotatably arranged on the support frame, the drying drum 1 includes a cylinder 11 and a material lifting plate 12 evenly distributed on the inner wall of the cylinder 11, and also includes: two bidirectional augers 2 and a screening plate 9, the two bidirectional augers 2 are both rotatably arranged on the inner wall of the cylinder 11 and are used to transport the cement raw materials on the bidirectional augers 2 to the middle of the cylinder 11, a transmission mechanism 3 is installed between the bidirectional augers 2 and the cylinder 11, and is used to make the cylinder 11 and the bidirectional augers 2 run synchronously, and the screening plate 9 can be reset and rotatably arranged On the lifting plate 12 near the middle of the cylinder 11, a blocking member 4 is provided in the middle of the drying cylinder 1 to keep the screen plate 9 away from the lifting plate 12, and a crushing plate 5 is provided on the two-way auger 2 for crushing the material under the screen plate 9. A mixing cylinder 6 is provided at the bottom of the crushing plate 5. A mixing component 7 is rotatably provided in the mixing cylinder 6 for mixing the crushed cement raw materials with the dried cement raw materials. A driving component 8 for driving the two-way auger 2 to slide along the axial direction of the cylinder 11 is provided inside the cylinder 11, and the driving component 8 synchronously drives the mixing component 7 to operate.

[0036] like Figure 3 As shown, in a specific embodiment of the present invention, the drying cylinder 1 also includes a driving device 13, which includes a driving motor, a driving gear and a driven gear. The driving gear is installed at the movable end of the driving motor, and the driving gear is meshed with the driven gear. The driven gear is sleeved on the outer periphery of the cylinder 11 and is fixedly connected to the cylinder 11; when the cylinder 11 needs to rotate, the driving motor rotates to drive the driving gear to rotate, and the driving gear rotates to drive the driven gear to rotate, and the driven gear rotates to drive the cylinder 11 to rotate. The rotation of the cylinder 11 causes the cement raw material to move from one end of the cylinder 11 to the other end under the action of the lifting plate 12.

[0037] like Figure 1-Figure 3 As shown, a support roller is installed on the support frame, a protrusion is provided on the outer wall of the cylinder 11, and the protrusion is clamped on the support roller. When the cylinder 11 rotates, the cylinder 11 is supported. A feed port is provided at one end of the cylinder 11, and a discharge assembly 14 is provided at the other end. The discharge assembly 14 includes a discharge sleeve 141, a discharge auger 142, a discharge gear 143 and a discharge gear ring 144. The discharge sleeve 141 is fixedly arranged on the support frame, and the discharge auger 142 is rotatably arranged in the discharge sleeve 141. The discharging gear 143 is installed on the rotating shaft of the discharging auger 142, and the discharging ring gear 144 is provided on the inner wall of the cylinder 11 and meshes with the discharging gear 143; when the cylinder 11 rotates, the dried cement raw material runs toward the discharging assembly 14, and the rotation of the cylinder 11 drives the discharging ring gear 144 to rotate, and then drives the discharging gear 143 to rotate, and then drives the discharging auger 142 to rotate, and the dried cement raw material is transported out of the cylinder 11 through the rotation of the discharging auger 142.

[0038] In a specific embodiment of the present invention, a receiving plate 21 is provided above the two bidirectional augers 2. The receiving plate 21 is tilted downward and fixedly connected to the support frame. When the lifting plate 12 transports the cement raw materials from the bottom of the cylinder 11 to the top, large-particle cement raw materials and small-particle cement raw materials are both lifted up, and some of the large-particle cement raw materials fall onto the receiving plate 21 and eventually slide onto the bidirectional augers 2. The blades of the bidirectional augers 2 are narrow so that there is a gap between the augers shafts of the bidirectional augers 2. The gap allows small-particle cement raw materials to fall, while the large-particle cement raw materials follow the movement of the bidirectional augers 2. When drying inside the cylinder 11, the small-particle cement raw materials can be dried quickly, while the large-particle cement raw materials dry slowly inside. After drying for a period of time, the inside is still wet. In the process of following the movement of the bidirectional augers 2, part of the dry cement raw materials on the surface of the large particles are ground off, and finally the large-particle cement raw materials are transported to the mixing cylinder 6 through the bidirectional augers 2.

[0039] In a specific embodiment of the present invention, the transmission mechanism 3 includes a power ring gear 31, a transmission gear 32 and a power gear 33. The power ring gear 31 is fixedly arranged on the cylinder 11, and the transmission gear 32 is installed on the support frame and meshes with the power ring gear 31. The power gears 33 are installed on the rotating shafts of the two bidirectional augers 2. The two power gears 33 mesh with each other, and one of the power gears 33 meshes with the transmission gear 32; when the cylinder 11 rotates, the power ring gear 31 rotates to drive the transmission gear 32 to rotate and then one of the power gears 33 rotates. Through the meshing of the two power gears 33, the two bidirectional augers 2 rotate in opposite directions. When large particles of cement raw materials fall between the two bidirectional augers 2, the outer layer of the large particles of cement raw materials is gradually worn away.

[0040] When the large-particle cement raw material moves to the middle of the cylinder 11, in order to quickly dry the large-particle cement raw material, a screening plate 9 is set on the lifting plate 12, and the screening plate 9 is rotatably set at the discharge end of the lifting plate 12. A torsion spring is installed between the screening plate 9 and the lifting plate 12, and the blocking member 4 is a blocking rod fixedly set on the top of the receiving plate 21, and a top block in contact with the blocking rod is set at the bottom of the screening plate 9; when the lifting plate 12 rotates to the top of the cylinder 11, the screening plate 9 contacts the blocking rod, which will drive the screening plate 9 to rotate and open the discharge end of the lifting plate 12, and the large-particle cement raw materials will fall on the receiving plate 21.

[0041] The crushing plate 5 includes an extrusion plate fixedly arranged in the middle of the bidirectional auger 2. When the cement raw material falls from the extrusion plate, the two extrusion plates rotate to crush the large-particle and externally dry cement raw materials, so that the internal wet part is exposed and falls into the mixing barrel 6.

[0042] like Figure 7-Figure 9As shown, the driving assembly 8 includes a first slider 81, a first closed-loop elliptical groove 82 and a connecting rod 83. The first slider 81 is fixedly arranged on the support frame, and the first closed-loop elliptical groove 82 is opened on the outer wall of the end of the two-way auger 2. The connecting rod 83 is hinged with the auger shaft of the two-way auger 2, and the two two-way auger 2 both penetrate the support frame and are slidably connected with the support frame; when the power gear 33 rotates, it drives the two-way auger 2 to rotate. Since the first slider 81 is fixed on the support frame, when the first slider 81 and the first closed-loop elliptical groove 82 are relatively displaced, the two-way auger 2 will be driven to displace along the axial direction of the cylinder 11. In a specific embodiment, the first closed-loop elliptical groove 82 is opened on the auger shaft of one of the two-way augers. Since a connecting rod 83 is provided in the middle of the two two-way augers 2, when one of the two-way augers 2 slides along the axial direction of the cylinder 11, the other two-way auger 2 also slides accordingly.

[0043] The power gear 33 is rotatably arranged on the support frame, a protrusion 34 is arranged on the power gear 33, and a slideway 35 is opened along the axial direction of the two-way auger 2; in order to enable the rotation of the power gear 33 to provide power for the rotation of the two-way auger 2, when the power gear 33 rotates, the protrusion 34 slides in the slideway 35, so that no circumferential relative displacement occurs between the power gear 33 and the two-way auger 2, and the two-way auger 2 is driven to rotate when the power gear 33 rotates.

[0044] like Figure 8 and Fig. 9 As shown, the mixing assembly 7 includes a second slider 71, a mixing auger 72, and a second closed-loop elliptical groove 73; the second slider 71 is fixedly arranged on the connecting rod 83, the mixing auger 72 is rotatably arranged in the mixing barrel 6, a mounting platform is fixedly arranged in the middle of the mixing auger 72, the second closed-loop elliptical groove 73 is arranged on the outer periphery of the mounting platform, and the second slider 71 is slidably arranged in the second closed-loop elliptical groove 73; since the connecting rod 83 will not move along the axial direction of the two-way auger 2, when the two-way auger 2 moves along the axial direction of the cylinder 11, the connecting rod 83 will push the second slider 71 to move along the axial direction of the cylinder 11, and the second slider 71 will push the mixing auger 72 to rotate when it moves in the second closed-loop elliptical groove 73. At this time, there are dry fine-grained cement raw materials falling from the lifting plate 12 and large particles that are crushed by the crushing plate 5 to expose the moist interior in the mixing barrel 6. When the mixing auger 72 rotates, the two are mixed, and when the moist large particles come into contact with the dry fine particles, the moisture of the large-particle cement raw materials is sucked out to accelerate the drying of the large-particle cement raw materials.

[0045] A discharge trough is arranged at the bottom of the mixing drum 6, and the mixed cement raw materials are discharged from the discharge trough. At this time, some large-particle cement raw materials still move to the bottom of the two-way auger 2 close to the discharge assembly 14. The lifting plate 12 puts a small amount of large-particle cement raw materials onto the two-way auger 2, and continues to return to the mixing drum 6 for mixing. Before mixing, they are crushed by the crushing plate 5 to expose the moist interior.

[0046] A drying method for a cement production raw material drying processing device, comprising the following steps: S1, feeding the cement raw material to be dried into a drying drum 1 from a feed inlet for drying; S2, under the action of a lifting plate 12, lifting the cement raw material in the drying drum 1, and causing part of the large particles to fall on a bidirectional auger 2, and removing the dried surface of the large particles through the bidirectional auger 2 before entering a mixing drum 6;

[0047] S3, when the large particles move to the middle of the cylinder 11, the large particles are lifted up by the screen plate 9. When passing through the blocking member 4, the screen plate 9 rotates to make the large particles fall into the mixing cylinder 6;

[0048] S4, when the bidirectional auger 2 rotates, it drives the crushing plate 5 to rotate, so that the large particles of materials are crushed when they fall into the mixing barrel 6 through the crushing plate 5, exposing the wet part inside;

[0049] S5, the bidirectional auger 2 operates the driving component 8 and drives the mixing component 7 to operate, and the wet part of the large particle material is mixed with the dry part through the operation of the mixing component 7 to accelerate the drying of the large particle material;

[0050] S6. The material discharged from the mixing assembly 7 is lifted up by the lifting plate 12 when moving toward one end of the cylinder 11, and is crushed by the crushing plate 5 under the drive of the two-way auger 2 and mixed with the dry material in the mixing cylinder 6. If the large particles are completely dried, they will be crushed by the crushing plate 5 to form small particles and discharged from the cylinder 11.

[0051] Specific working principle:

[0052] The cement raw material is put into the drying drum 1 from the feeding port, and the cement raw material is dried by the drying drum 1 and moved toward the discharging assembly 14. The lifting plate 12 drives the cement raw material to the top of the cylinder 11 and falls on the two-way auger 2. The two-way auger 2 moves the large-particle cement raw material falling thereon toward the middle of the cylinder 11. When the large-particle cement raw material moves on the two-way auger 2, the operation of the two-way auger 2 can grind off the external dry cement raw material as much as possible, and a screening plate 9 is set on the lifting plate 12 near the middle to make as many large-particle cement raw materials as possible fall from the middle of the cylinder 11. When the large-particle cement raw material falls, it will be crushed when passing through the crushing plate 5 to expose the moist interior and finally fall into the mixing drum 6. The mixing drum 6 will wrap the dry cement raw material outside the moist large particles so that the moisture inside the large particles can be absorbed, thereby accelerating the drying of the large-particle cement raw material. When there are still large particles in the cement raw material flowing out of the mixing drum 6, the large-particle cement raw material will pass through one end of the two-way auger 2 close to the discharge component 14, be lifted up by the lifting plate 12 and fall on the two-way auger 2 and enter the mixing drum 6 for mixing after being crushed again, thereby ensuring that the cement raw material is as dry as possible.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cement production raw material drying and processing device, comprising a support frame and a drying cylinder rotatably arranged on the support frame, wherein the drying cylinder comprises a cylinder body and lifting plates evenly distributed on the inner wall of the cylinder body, characterized in that: Also includes: Two bidirectional augers are rotatably arranged on the inner wall of the cylinder and are used to transport the cement raw materials on the bidirectional augers to the middle of the cylinder. A transmission mechanism is installed between the bidirectional augers and the cylinder to make the cylinder and the bidirectional augers run synchronously; The screening plate is rotatably arranged on the lifting plate near the middle of the cylinder body, and a blocking member for rotating the screening plate is arranged in the middle of the drying cylinder. The two-way auger is provided with a crushing plate for crushing the material under the sieve of the screening plate, and a mixing cylinder is arranged at the bottom of the crushing plate. A mixing assembly is rotatably arranged in the mixing cylinder for mixing the crushed cement raw materials with the dried cement raw materials. A driving assembly for driving the two-way auger to slide along the axial direction of the cylinder body is arranged inside the cylinder body, and the driving assembly synchronously drives the mixing assembly to operate; The driving assembly includes a first slider, a first closed-loop elliptical groove and a connecting rod, wherein the first slider is fixedly arranged on the support frame, the first closed-loop elliptical groove is arranged on the outer wall of the end of the bidirectional auger, the connecting rod is hinged to the auger shaft of the bidirectional auger, and both bidirectional augers penetrate the support frame and are slidably connected to the support frame; The mixing assembly includes a second slider, a mixing auger and a second closed-loop elliptical groove, the second slider is fixedly arranged on the connecting rod, the mixing auger is rotatably arranged in the mixing barrel, a mounting platform is fixedly arranged in the middle of the mixing auger, the second closed-loop elliptical groove is opened on the outer periphery of the mounting platform, and the second slider is slidably arranged in the second closed-loop elliptical groove.

2. A cement production raw material drying and processing device according to claim 1, characterized in that: The drying drum also includes a driving device, which includes a driving motor, a driving gear and a driven gear. The driving gear is installed at the movable end of the driving motor, the driving gear is meshed with the driven gear, and the driven gear is sleeved on the outer periphery of the drum and fixedly connected to the drum.

3. A cement production raw material drying and processing device according to claim 1, characterized in that: A feed port is provided at one end of the cylinder, and a discharging assembly is provided at the other end. The discharging assembly includes a discharging sleeve, a discharging auger, a discharging gear and a discharging gear ring. The discharging sleeve is fixedly arranged on a support frame, the discharging auger is rotatably arranged in the discharging sleeve, the discharging gear is installed on the rotating shaft of the discharging auger, and the discharging gear ring is opened on the inner wall of the cylinder and meshes with the discharging gear.

4. A cement production raw material drying and processing device according to claim 1, characterized in that: The transmission mechanism includes a power gear ring, a transmission gear and a power gear. The power gear ring is fixed on the cylinder, and the transmission gear is installed on the support frame and meshes with the power gear ring. Power gears are installed on the rotating shafts of the two bidirectional augers, and the two power gears mesh with each other, and one of the power gears meshes with the transmission gear.

5. The cement production raw material drying and processing device according to claim 1, characterized in that: The screening plate is rotatably arranged at the discharge end of the lifting plate, a torsion spring is installed between the screening plate and the lifting plate, a receiving plate is arranged above the two bidirectional augers, the receiving plate is fixedly arranged on the supporting frame, and a top block which can contact with the blocking rod is arranged at the bottom of the screening plate.

6. A drying method for a cement production raw material drying treatment device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Put the cement raw materials to be dried into the drying drum from the feed port for drying; S2. Under the action of the lifting plate, the cement raw materials are lifted in the drying drum, and some large particles fall on the bidirectional auger. The bidirectional auger removes the dried surface of the large particles and then enters the mixing drum; S3. When the large particles move to the middle of the cylinder, the screen plate lifts the large particles. When passing through the blocking member, the screen plate rotates to make the large particles fall into the mixing cylinder. S4. When the bidirectional auger rotates, it drives the crushing plate to rotate, and the large particles of materials are crushed by the crushing plate when they fall into the mixing barrel, exposing the wet parts inside; S5, the bidirectional auger operates the driving component and drives the mixing component to operate, and the wet part of the large particle material is mixed with the dry part through the operation of the mixing component to accelerate the drying of the large particle material; S6. After the material is discharged from the mixing assembly, it moves toward one end of the cylinder, is lifted up by the lifting plate, and is crushed by the crushing plate under the drive of the two-way auger and mixed with the dry material in the mixing cylinder. If the large particles are completely dried, they will be crushed by the crushing plate to form small particles and discharged from the cylinder.

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