A material conveying device with a spiral shaft material spreading mechanism

Abstract

A material conveying device with a spiral shaft paving mechanism, comprising a platform for providing flat materials and pushing materials; the platform comprises at least two or more groups of bars alternately stacked and laid to form a stacked bar pushing type material conveying platform; each adjacent bar of the same group of bars is separated by a gasket, the thickness of the gasket is greater than the thickness of the other group of bars, so as to form a ventilation gap; a spiral shaft paving mechanism is provided above the starting end of the platform; the spiral shaft paving mechanism comprises a spiral shaft; the spiral shaft is horizontally placed above the starting end of the platform, the spiral shaft has a feed end and a terminal end, and the rotational movement of the spiral shaft causes the material to spread from the feed end of the spiral shaft to the terminal end, and to be spread to the platform position located at the bottom of the spiral shaft. The present invention does not need to set a crushing, granulating or strip-making machine at the feed port of the drying equipment, thereby reducing equipment investment and saving costs.

Description

[Technical field]

[0001] The invention belongs to the technical field of material drying equipment, and in particular relates to a material conveying device with a spiral shaft material spreading mechanism. [Background technology]

[0002] Material drying equipment is widely used in the drying process of chemical, food, pharmaceutical, building materials and other industries. In the field of sludge treatment, the mud cake produced by the sludge dewatering machine is crushed, granulated or stripped, and then falls freely onto the mesh track. Through the multi-layer reciprocating mesh belt, the water in the mud cake on the mesh belt gradually evaporates, and finally forms a material with a lower moisture content for discharge.

[0003] Chinese invention patent 201810369116.0 discloses a return air circulation heating drying device, and Chinese invention patent 201810953665.2 discloses a closed belt dryer. The material conveying devices in these two patent documents both use a conveyor belt to convey materials, wherein the conveyor belt is a mesh belt.

[0004] This type of drying equipment in the prior art has the following disadvantages: 1. The drying efficiency is extremely low for mud cakes with high moisture content that cannot be formed. 2. After the mud cake falls onto the mesh belt, it cannot be evenly spread out in a short period of time. It often piles up together and even blocks the ventilation mesh of the filter on the mesh belt, affecting the ventilation and evaporation effects. 3. The shape of the mud cake will not change during the transportation process, and the moisture inside the mud cake cannot be discharged. The mud cake at the bottom cannot always be in contact with the hot air during a transportation process, resulting in uneven evaporation. 4. In order to form ventilation gaps between the mud cakes and increase the evaporation area of ​​the material, a granulator, crusher or strip maker is often required at the feed inlet of the drying equipment, thereby increasing the equipment investment cost. [Summary of the invention]

[0005] The technical problem to be solved by the present invention is to provide a material conveying device with a spiral shaft material spreading mechanism, which does not require a crushing, granulating or strip-making machine to be arranged at the feed port of the drying equipment, thereby reducing equipment investment and saving costs.

[0006] The present invention is achieved in that:

[0007] A material conveying device with a spiral shaft paving mechanism, comprising a platform for paving and pushing materials; the platform comprises at least two or more groups of grid bars alternately stacked and paved to form a stacked bar pushing type material conveying platform; each adjacent grid bar of the same group is separated by a gasket, the thickness of the gasket is greater than the thickness of the other group of grid bars, so as to form a ventilation gap;

[0008] At least one group of bars is a movable bar, which is relatively displaced relative to another adjacent group of bars, so as to ensure that each group of movable bars performs reciprocating motion;

[0009] Two or more serial connection holes are provided at the front and rear balanced positions on each group of movable bars; the movable bars of each group are connected into a movable body through serial connection rods inserted through the serial connection holes; each movable body guides and drives all movable bars of the group to produce the same motion trajectory through a first driving device;

[0010] A spiral shaft material spreading mechanism is provided above the starting end of the platform; the spiral shaft material spreading mechanism comprises a spiral shaft; the spiral shaft is horizontally placed above the starting end of the platform, the spiral shaft has a feeding end and an end, and the rotational movement of the spiral shaft causes the material to spread from the feeding end of the spiral shaft to the end, and to be spread flat to the platform position located at the bottom of the spiral shaft.

[0011] Furthermore, the screw shaft is a bidirectional screw shaft, that is, the feed end of the screw shaft is located in the middle of the screw shaft, and the ends of the screw shaft are located at both ends of the screw shaft; the rotational movement of the bidirectional screw shaft causes the material to be spread from the middle to both ends by the bidirectional screw shaft, and spread flat to the platform position located at the bottom of the bidirectional screw shaft.

[0012] Furthermore, the two screw shafts are arranged side by side, the screw shaft close to the material conveying direction is the first screw shaft, and the screw shaft close to the starting end of the platform is the second screw shaft;

[0013] The first spiral shaft and the second spiral shaft have opposite rotation directions;

[0014] The rotational motion of the two screw shafts causes the material to be engulfed and crushed by the two screw shafts, spread from the feed end of the screw shaft to the end of the screw shaft, and spread to the platform position located at the bottom of the two screw shafts.

[0015] Furthermore, the blade portion on the upper portion of the second screw shaft moves in the material conveying direction; and a material blocking unit is provided on the side of the second screw shaft close to the starting end of the platform to prevent the material from being pushed out of the starting end of the platform and falling.

[0016] Furthermore, the material blocking unit tilts the starting end of the platform upwards and surrounds the side of the second spiral shaft close to the starting end of the platform to prevent the material from being pushed out of the starting end of the platform and falling.

[0017] Furthermore, the material blocking unit is a material blocking plate provided on the side of the second screw shaft close to the starting end of the platform to prevent the material from being pushed out of the starting end of the platform and falling.

[0018] Furthermore, the material blocking unit is a third screw shaft arranged side by side on the second screw shaft near the starting end of the platform, and the rotation direction of the third screw shaft is the same as that of the first screw shaft.

[0019] Furthermore, the spiral shaft material spreading mechanism further includes a material limiting unit;

[0020] The material limiting unit includes a cover plate and a side plate; the cover plate covers the upper part of the screw shaft to limit the material from rolling out from the top of the screw shaft; the side plate is arranged at the end of the screw shaft to limit the material from being pushed out to the end of the screw shaft and falling from the side of the platform;

[0021] The material limiting unit is provided with a feed port, which corresponds to the position of the feed end of the screw shaft and is used for feeding.

[0022] Furthermore, the feed inlet is connected to a material delivery pump for one-way material delivery.

[0023] Furthermore, a feeding unit is provided at the feed inlet, and the feeding unit comprises a feeding hopper, a rotating shaft and a stirring module provided on the rotating shaft;

[0024] The feed hopper is arranged above the feed port; the middle part of the stirring module is hollow and close to the side wall of the feed hopper; the stirring module rotates driven by the rotating shaft to prevent material accumulation, stir and cut the material, and push the material to the bottom of the feed port in time.

[0025] Furthermore, a material crushing device is provided above the platform on the side of the spiral shaft paving mechanism in the material conveying direction. The material crushing device is driven by a second driving device to make reciprocating motion at a certain angle to the material propulsion direction, thereby crushing, smoothing, squeezing, shearing and scraping the material on the platform.

[0026] Furthermore, the angle is 90°.

[0027] Furthermore, the first driving device comprises: a set of driving central shafts, a set of guiding bars, and a set of driving mechanisms;

[0028] The set of driving central shafts includes at least two driving central shafts;

[0029] The group of guide bars includes at least two guide bars, which are located at the left and right balanced positions of the stacked bar propulsion type material conveying platform; at least two first eccentric devices are arranged on each guide bar, which are located at the front and rear balanced positions of the material conveying platform, and a driving center axis is passed through the first eccentric devices corresponding to the left and right of the group of guide bars; the eccentric directions and eccentric distances of the first eccentric devices on the group of guide bars are consistent; at least two fixing holes are arranged on each guide bar, which are consistent with the positions of the serial connection holes on the movable bars; the fixing holes on the guide bars and the serial connection holes of the movable bars are fixedly connected in series through the same serial connection rod;

[0030] The set of driving mechanisms includes a first driving motor and a first transmission mechanism, or a plurality of first driving motors;

[0031] The group of driving mechanisms drives the group of driving central shafts to achieve the same direction and rotation speed; the group of driving mechanisms drives the group of driving central shafts to move synchronously, and respectively drives the group of guide bars mounted thereon to move, and the group of guide bars drives the group of movable bars connected thereto to move along the same motion trajectory.

[0032] Furthermore, the second driving device comprises: a group of rolling driving central shafts, at least one rolling guide plate, and a group of rolling device driving mechanisms;

[0033] The group of rolling drive central shafts includes at least two rolling drive central shafts; the group of rolling drive central shafts is fixed by at least one fixing plate;

[0034] Each rolling guide plate is provided with at least two second eccentric devices, and each second eccentric device is provided with a rolling drive central shaft;

[0035] The group of rolling device driving mechanisms includes at least two gear steering mechanisms, the first output end of each gear steering mechanism passes through the rolling drive central axis, and the second output end of each gear steering mechanism passes through the drive central axis;

[0036] The driving center shaft drives the rolling driving center shaft to rotate through the gear steering mechanism, and the rolling driving center shaft drives the rolling guide plate to move through the second eccentric device. The movement direction of the rolling guide plate is at a certain angle to the movement direction of the platform, so that the rolling guide plate can roll, smooth, extrude, shear and scrape the material on the platform.

[0037] Furthermore, the second driving device comprises: a group of rolling driving central shafts, at least one group of rolling guide plates, and a group of rolling device driving mechanisms;

[0038] The group of rolling drive central shafts includes at least two rolling drive central shafts; the group of rolling drive central shafts is fixed by at least one fixing plate;

[0039] The group of rolling guide plates includes at least two rolling guide plates, each of which is provided with at least two second eccentric devices, and each of the second eccentric devices is provided with a rolling drive central shaft;

[0040] The group of rolling device driving mechanisms includes at least two gear steering mechanisms, the first output end of each gear steering mechanism passes through the rolling drive central axis, and the second output end of each gear steering mechanism passes through the drive central axis;

[0041] The driving center shaft drives the rolling driving center shaft to rotate through the gear steering mechanism, and the rolling driving center shaft drives the group of rolling guide plates to move through the second eccentric device. The movement direction of the group of rolling guide plates is at a certain angle to the movement direction of the platform. The group of rolling guide plates is also fixedly connected to a rolling module. The rolling module is driven by the group of rolling guide plates to roll, smooth, extrude, shear and scrape the material on the platform.

[0042] Furthermore, the group of rolling device driving mechanisms includes a second driving motor and a second transmission mechanism; the second driving motor and the second transmission mechanism drive the group of rolling driving central shafts to rotate, thereby driving the rolling guide plate to move;

[0043] Alternatively, the group of rolling device driving mechanisms includes multiple second driving motors; each of the second driving motors drives one of the rolling driving central shafts to rotate, thereby driving the rolling guide plate to move.

[0044] Furthermore, the rolling guide plates are arranged in multiple groups at intervals, and the rolling modules are arranged in multiple groups at intervals, so that during the material transportation process on the platform, the material can be ensured to be rolled, smoothed, squeezed, sheared, and scraped, and the ventilation above the material can be guaranteed to be smooth.

[0045] Furthermore, a lower platform is provided below the platform, which corresponds to the platform located above, and also includes at least two or more groups of bars stacked alternately; there is a gap between each adjacent bar; each group of movable bars on the upper platform is connected to a group of movable bars on the lower platform through a plurality of balanced distributed lower guide connecting bars arranged on the movable bars or guide bars on both sides thereof, so that each group of movable bars on the lower platform moves in the same trajectory as a group of movable bars on the upper platform.

[0046] The advantages of the present invention are: 1. During the material conveying process, the interactive bars produce transparent gaps, which improve the fluidity of the air and are beneficial to the drying of the material. 2. During the material conveying process, the evaporation area of ​​the material is increased by actions such as propping up, flattening, shearing, scraping and rolling, so that drying can be carried out more efficiently. It is also suitable for materials with high moisture content that cannot be formed. 3. The material can fall smoothly from the ventilation gap to the lower platform, effectively increasing the evaporation area. 4. The spiral shaft spreading mechanism allows the material to be evenly spread on the platform before conveying. For the agglomerated material, it will be crushed and then evenly spread. There is no need to set a crushing, granulating or strip-making machine at the feed port of the drying equipment, which reduces equipment investment and saves costs.

Brief Description of the Drawings

[0047] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0048] Figure 1 It is a schematic diagram of the grid bar structure in the present invention.

[0049] Figure 2 It is a schematic diagram of the structure of the guide grid bars in the present invention.

[0050] Figure 3 It is a partial three-dimensional exploded structural diagram of the stacked strip push-type material conveying device in the present invention.

[0051] Figure 4 It is a schematic diagram of a partial combined structure of the stacked strip push-type material conveying device in the present invention.

[0052] Figure 5 It is a schematic diagram of the overall structure of the stacked strip push-type material conveying device in the present invention.

[0053] Figure 6 It is a side view of the stacked strip push-type material conveying device in the present invention.

[0054] Figure 7 It is a schematic diagram of the structure of using double platforms in the present invention.

[0055] Figure 8 It is a structural schematic diagram of a material conveying device with a material crushing device in the present invention.

[0056] Fig. 9 It is a side view of the material conveying device with the material crushing device in the present invention.

[0057] Fig.10 It is a structural schematic diagram of a fixed plate of a material crushing device in the present invention being fixed on a fixed support frame.

[0058] Fig.11 It is a structural schematic diagram of the rolling guide plate of the material rolling device in the present invention.

[0059] Fig.12 It is a schematic diagram of the positional relationship between the driving center axis and the rolling driving center axis in the present invention.

[0060] Fig.13 It is a schematic diagram of the structure of a single screw shaft in the first embodiment of the screw shaft material spreading mechanism in the present invention.

[0061] Fig.14 It is a structural schematic diagram of the first embodiment of the spiral shaft material spreading mechanism in the present invention.

[0062] Fig.15 It is a schematic diagram of the exploded structure of the first embodiment of the spiral shaft paving mechanism in the present invention.

[0063] Fig.16 It is a schematic diagram of the double spiral shaft structure in the second embodiment of the spiral shaft paving mechanism in the present invention.

[0064] Fig.17 It is a structural schematic diagram of the second embodiment of the spiral shaft material spreading mechanism in the present invention.

[0065] Fig.18 It is a schematic diagram of the exploded structure of the second embodiment of the spiral shaft material spreading mechanism in the present invention.

[0066] Fig.19 It is a schematic structural diagram of the third embodiment of the spiral shaft material spreading mechanism in the present invention.

[0067] Fig. 20 It is a schematic diagram of the exploded structure of the third embodiment of the spiral shaft paving mechanism in the present invention.

[0068] Fig.21 It is a schematic diagram of the structure of three spiral shafts in the fourth embodiment of the spiral shaft paving mechanism of the present invention.

[0069] Fig. 22 It is a structural schematic diagram of the fourth embodiment of the spiral shaft spreading mechanism in the present invention.

[0070] Fig.23 It is a schematic diagram of the exploded structure of the fourth embodiment of the spiral shaft paving mechanism in the present invention.

[0071] Fig.24 It is a structural schematic diagram of the fifth embodiment of the spiral shaft spreading mechanism in the present invention.

[0072] Fig.25 It is a schematic diagram of the exploded structure of the fifth embodiment of the spiral shaft paving mechanism in the present invention. [Specific implementation method]

[0073] like Figures 1 to 6As shown, a stacked-bar push-type material conveying device 3 suitable for use in a drying chamber 1 of a drying device comprises two groups of grid bars 31 stacked alternately to form a stacked-bar push-type material conveying platform 100 .

[0074] Both groups of bars 31 are movable bars, and adjacent bars are displaced up and down and forward and backward relative to each other, so as to ensure that the movable bars of the same group perform reciprocating motion along the same motion trajectory.

[0075] Each movable bar 31 is provided with three connection holes 311 in a balanced manner in the front and back. Each group of movable bars 31 is connected to form a movable body through a connection rod 312 passing through the connection holes 311. Each movable body is guided and driven by a driving device 32 to drive all movable bars 31 of the group to produce the same motion trajectory. Each adjacent bar 31 of the same group is separated by a gasket 313 to form a gap, and the gasket 313 is provided on the connection rod 312.

[0076] The driving device 32 includes a driving motor 321 , a chain 331 , two sprockets 332 , two driving central shafts 322 , and two guide bars 323 .

[0077] The driving motor 321 is arranged outside the drying chamber 1. Each sprocket 332 is arranged at one end of a driving central shaft 322. A chain 331 is respectively wound around two sprockets 332 located on one side of a group of driving central shafts 322, as a transmission between a group of driving central shafts 322.

[0078] The two driving central shafts 322 are disposed at two symmetrical ends of the stacked-strand push-type material conveying platform 100 .

[0079] Two guide bars 323 are arranged at two symmetrical ends of the stacked bar push type material conveying platform 100. Two eccentric bearings 3231, three fixing holes 3232 and two clearance holes 3233 are arranged at the front and rear balanced positions on each guide bar 323.

[0080] The two ends of the driving central shaft 322 are respectively sleeved on the corresponding left and right eccentric bearings 3231 on the two guide bars 323; a group of connecting rods 312 of the movable bars 31 are fixedly passed through the fixing holes 3232 on the guide bars 323.

[0081] The movable bars 31 (multiple) of group A are driven by the guide bars 323 (two) of group A to reciprocate upward, forward, downward, backward, and upward. The movable bars 31 (multiple) of group B are driven by the guide bars 323 (two) of group B to reciprocate upward, forward, downward, backward, and upward. The movable bars 31 of groups AB make staggered motions, and their motion trajectories are determined by the direction of the driving center shaft 322, and their motion amplitude is determined by the eccentricity of the eccentric bearing 3231.

[0082] The movable bars A31 of group A and the movable bars B31 of group B share a set of driving center shafts 322. The different eccentric directions of the eccentric bearings 3231 sleeved on the driving center shafts 322 cause the two sets of movable bars A31 and B31 to produce staggered motion.

[0083] The driving motor 321 drives two driving central shafts 323 through a chain 331 and two sprockets 332, and allows the two driving central shafts 323 to move synchronously, respectively driving the guide bars 323 passing through them and driving the group of movable bars 31 to move in the same motion trajectory. In addition, in practice, the transmission method between the two driving central shafts 323 can not only be through sprocket transmission, but also through gear transmission, or other transmission methods.

[0084] It should be noted that in large-scale equipment, the length of the movable grid bar 31 is relatively long, so each movable grid bar 31 needs to be formed by fixedly splicing a plurality of segmented grid bars.

[0085] In practice, the A group of bars can also reciprocate upward, forward, downward, backward, and upward to transport materials, and the B group of bars can reciprocate upward, left, downward, right, and upward to scrape materials off the side walls of the bars. The A group of bars can also reciprocate upward, forward, downward, backward, and upward to transport materials, and the B group of bars can be fixed.

[0086] In addition, a lower platform 200 having the same structure as the platform 100 may be provided below the platform 100 formed by the stacked-bar push-type material conveying device 3. Figure 7 On the upper platform 100, group A of movable bars are located on the outermost left and right sides, and two lower guide connecting bars 38 are respectively arranged on the movable bars, which are connected to the movable bars at the corresponding positions of the lower platform 200. Group B bars are arranged in the same way, so that each group of movable bars located on the upper platform 100 drives the corresponding group of movable bars located on the lower platform 200 to move in the same trajectory.

[0087] The advantage of setting up the lower platform 200 is that part of the material falls from the gap of the upper platform 100 to the lower platform 200 and can continue to be transported, which is equivalent to expanding the upper platform 100, increasing the evaporation area of ​​the material, and is conducive to the drying of the material.

[0088] The stacked-bar-propelled material conveying platform 100 runs in both forward and reverse directions, wherein the forward running distance is greater than the reverse running distance, thereby enabling the material conveying speed to be controlled while the material can be smoothly transported from the starting end to the end end.

[0089] like Figures 8 to 11As shown, a material crushing device is also provided on the platform 100 of the material conveying device 3. The material crushing device is driven by a driving device 4 to make a reciprocating motion at 90° to the propulsion direction of the material, thereby crushing, smoothing, squeezing, shearing and scraping the material on the platform.

[0090] The driving device 4 comprises: a group of rolling driving central shafts 41, two rolling guide plates 42, and a group of rolling device driving mechanisms 43;

[0091] A set of rolling drive center shafts (not shown) includes two rolling drive center shafts; the set of rolling drive center shafts is fixed by two fixing plates 411; the two fixing plates 411 are fixed on the fixed support frame 14, and the fixed support frame 14 is fixed in the drying chamber 1.

[0092] The rolling guide plate 42 is provided with at least two eccentric devices 421, and a rolling drive central shaft is passed through each first eccentric device 421;

[0093] A set of rolling device driving mechanism 43 includes two gear steering mechanisms 431 , wherein the first output end of the gear steering mechanism 431 is penetrated by the rolling driving central axis, and the second output end is penetrated by the driving central axis 322 .

[0094] The rolling drive center axis is 90° to the drive center axis 322 .

[0095] The driving center shaft 322 drives the rolling driving center shaft to rotate through the gear steering mechanism 431, and the rolling driving center shaft drives the rolling guide plate 42 to move through the eccentric device 421. The movement direction of the rolling guide plate 42 is 90° to the movement direction of the platform. A rolling module 421 is fixedly connected to the two rolling guide plates 42. The rolling module 421 is driven by the rolling guide plate 42 to roll, smooth, extrude, shear and scrape the material on the platform.

[0096] In practice, the rolling guide plates 42 may be arranged in multiple groups, and a plurality of rolling modules 421 on each group of rolling guide plates may be arranged at intervals.

[0097] In this embodiment, the power of the two rolling drive central shafts 41 is transmitted by the two drive central shafts 322 through two gear steering mechanisms 431. In practice, the power of the two rolling drive central shafts 41 can also be driven by two independent motors, or by one independent motor in conjunction with a transmission mechanism.

[0098] In this embodiment, the two driving central shafts 323 and the two rolling driving central shafts 41 are in a rectangular frame, and the drive between the four is completely realized by the gear steering mechanism 431 of the same specification to realize the power transmission, without the need for other transmission mechanisms or other independent motors to realize. Fig.12 It should be noted that if the material crushing device is not provided on the material conveying device 3, the crushing driving central shaft 41 is not used to drive the material crushing device, but can also be used as a transmission mechanism to drive the driving central shaft 323 so that the two driving central shafts 323 in the same group have the same rotation speed and direction.

[0099] A spiral shaft material spreading mechanism 300 is also provided above the starting end of the platform 100 .

[0100] like Figures 13 to 15 FIG. 1 is a first embodiment of the spiral shaft paving mechanism 300:

[0101] The screw shaft material spreading mechanism 300 includes a screw shaft 301 and a material limiting unit 310 .

[0102] The screw shaft 301 is a bidirectional screw shaft, which is horizontally placed above the beginning of the platform 100. The feeding end of the screw shaft 301 is the middle part, and the ends are the two ends. The rotation direction of the screw shaft 301 is: the blade part located at the upper part of the screw shaft 301 moves toward the beginning of the platform 100. The rotation of the screw shaft 301 causes the material to spread from the middle of the screw shaft 301 to the two ends, and spread to the platform 100 position at the bottom of the bidirectional screw shaft 301.

[0103] The material limiting unit 310 includes a cover plate 311 and two side plates 312; the cover plate 311 covers the upper part of the screw shaft 301 to limit the material from rolling out from the upper part of the screw shaft 301; the two side plates 312 are respectively arranged at the two ends of the screw shaft 301 to limit the material from being pushed out to the two ends of the screw shaft 301 and falling from the two sides of the platform 100. A feed port 313 is arranged in the middle of the cover plate 311, and the feed port 313 corresponds to the position of the feed end of the screw shaft 301, and is used for feeding.

[0104] like Figures 16 to 18 FIG. 2 shows a second embodiment of the spiral shaft paving mechanism 300:

[0105] The screw shaft material spreading mechanism 300 includes a screw shaft 301 , a screw shaft 302 , a material limiting unit 310 , and a material blocking unit 320 .

[0106] The screw shaft 301 and the screw shaft 302 are arranged side by side at the beginning of the platform 100 , the screw shaft 301 is close to the material conveying direction, and the screw shaft 302 is close to the beginning of the platform 100 .

[0107] The screw shaft 301 rotates in the direction that the blade portion located at the upper portion of the screw shaft 301 moves toward the starting end of the platform 100 ; the screw shaft 302 rotates in the opposite direction to the screw shaft 301 , that is, the blade portion located at the upper portion of the screw shaft 302 moves in the material conveying direction.

[0108] The rotational motion of the screw shafts 301 and 302 causes the materials to be engulfed and crushed by the two screw shafts 301 and 302 , and spreads the materials to the platform 100 located at the bottom of the two screw shafts 301 and 302 .

[0109] A material blocking unit 320 is provided on one side of the spiral shaft 302 near the beginning of the platform 100. The material blocking unit 320 tilts the beginning of the platform 100 upwards and surrounds the side of the spiral shaft 302 near the beginning of the platform 100 to prevent the material from being pushed out of the beginning of the platform 100 and falling.

[0110] The material limiting unit 310 includes a cover plate 311 and two side plates 312; the cover plate 311 covers the upper part of the screw shafts 301 and 302 to limit the material from rolling out from the upper part of the screw shafts 301 and 302; the two side plates 312 are respectively arranged at the two ends of the screw shafts 301 and 302 to limit the material from being pushed out to the two ends of the screw shafts 301 and 302 and falling from the two sides of the platform 100. A feed port 313 is arranged in the middle of the cover plate 311, and the feed port 313 corresponds to the position of the feed end of the screw shafts 301 and 302 for feeding.

[0111] like Fig.19 and Fig. 20 FIG. 3 is a third embodiment of the spiral shaft paving mechanism 300:

[0112] The difference from the second embodiment is that the material blocking unit 320 is a material blocking plate 321 disposed on the side of the screw shaft 302 close to the beginning of the platform 100 to prevent the material from being pushed to the beginning of the platform 100 and falling.

[0113] The remaining structure is the same as that of the second embodiment.

[0114] like Figure 21 to Figure 23 FIG. 4 shows a fourth embodiment of the spiral shaft paving mechanism 300:

[0115] The difference from the second embodiment is that the material blocking unit 320 is a screw shaft 303 arranged side by side at the side of the screw shaft 302 close to the starting end of the platform 100 , and the rotation direction of the screw shaft 303 is the same as that of the screw shaft 301 .

[0116] The remaining structure is the same as that of the second embodiment.

[0117] like Figure 24 to Figure 25 FIG. 5 shows a fifth embodiment of the spiral shaft paving mechanism 300:

[0118] The difference from the fourth embodiment is that a feeding unit 330 is provided at the feed port 313, and the feeding unit 330 includes a feed hopper 331, a rotating shaft 332, and a stirring module 333 provided on the rotating shaft 332, and the stirring module 333 is in the shape of a rectangular frame, and the rectangular frame is close to the inner wall of the feed hopper 331. The stirring module 333 rotates under the drive of the rotating shaft 332 to prevent the accumulation of materials, stir and cut the materials, and push the materials to the bottom of the feed port 313 in time.

[0119] In addition, the feeding unit 330 may also be a material conveying pump directly connected to the feed port 313 for one-way material delivery.

[0120] The remaining structure is the same as that of the fourth embodiment.

[0121] In addition, it should be noted that the feeding unit 330 can also be provided in the first to third embodiments of the spiral shaft spreading mechanism 300 .

[0122] Workflow: A multi-layer stacked bar push-type material conveying device 3 is arranged in the drying room 1 of the drying equipment. A spiral shaft paving mechanism 300 is arranged at the beginning of the upper platform 100 of the stacked bar push-type material conveying device 3 located at the top layer. The material automatically falls or is conveyed to the feeding unit 330 located at the feed port 313 of the spiral shaft paving mechanism 300. Through the rotation of the spiral shaft, the material is spread from the middle to both ends by the bidirectional spiral shaft and spread on the platform 100 located at the bottom of the bidirectional spiral shaft. If the material is agglomerated or easy to stick to the shaft, it can be crushed by the double spiral shaft, which will also make the material spread more smoothly. The reciprocating motion of the movable grid allows the material to move in the direction of material conveying and keeps the ventilation seam transparent. The rolling module 421 rolls, smoothes, squeezes, shears and scrapes the material to increase the surface area of ​​the material evaporation as much as possible, and allows the excess material to be squeezed to the lower platform 200 for continued conveying, or even further rolled. The material starts from the beginning of the platform 100 and moves in the material conveying direction. In order to control the conveying speed of the material, the speed of the motor can be adjusted or the motor can be reversed. After the material is dried at the end of the platform of the material conveying device, it falls to the material conveying device of the next layer to continue drying. Finally, the material with a lower moisture content is discharged from the material conveying device at the bottom layer.

[0123] The spiral shaft spreading mechanism 300 of the present invention allows the material to be spread evenly on the platform 100 before being transported, eliminating the need to set up a strip-making machine at the feed inlet of the drying equipment, and can break up agglomerated materials, thereby reducing equipment investment costs.

[0124] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A material conveying device with a spiral shaft material spreading mechanism, characterized in that: The utility model comprises a platform for laying materials and pushing materials; the platform comprises at least two or more groups of grid bars which are stacked alternately to form a stacked grid pushing material conveying platform; each adjacent grid bar of the same group is separated by a gasket, and the thickness of the gasket is greater than that of the other group of grid bars, so as to form a ventilation gap; At least one group of bars is a movable bar, which is relatively displaced relative to another adjacent group of bars, so as to ensure that each group of movable bars performs reciprocating motion; Two or more serial connection holes are provided at the front and rear balanced positions on each group of movable bars; the movable bars of each group are connected into a movable body through serial connection rods inserted through the serial connection holes; each movable body guides and drives all movable bars of the group to produce the same motion trajectory through a first driving device; A spiral shaft material spreading mechanism is provided above the starting end of the platform; the spiral shaft material spreading mechanism comprises a spiral shaft; the spiral shaft is horizontally placed above the starting end of the platform, the spiral shaft has a feeding end and a tail end, and the rotation of the spiral shaft causes the material to spread from the feeding end of the spiral shaft to the tail end and spread flat to the platform position located at the bottom of the spiral shaft; The first driving device comprises: a set of driving central shafts, a set of guiding bars, and a set of driving mechanisms; The set of driving central shafts includes at least two driving central shafts; The group of guide bars includes at least two guide bars, which are located at the left and right balanced positions of the stacked bar propulsion type material conveying platform; at least two first eccentric devices are arranged on each guide bar, which are located at the front and rear balanced positions of the material conveying platform, and a driving center axis is passed through the first eccentric devices corresponding to the left and right of the group of guide bars; the eccentric directions and eccentric distances of the first eccentric devices on the group of guide bars are consistent; at least two fixing holes are arranged on each guide bar, which are consistent with the positions of the serial connection holes on the movable bars; the fixing holes on the guide bars and the serial connection holes of the movable bars are fixedly connected in series through the same serial connection rod; The set of driving mechanisms includes a first driving motor and a first transmission mechanism, or a plurality of first driving motors; The group of driving mechanisms drives the group of driving central shafts to achieve the same direction and rotation speed; the group of driving mechanisms drives the group of driving central shafts to move synchronously, and respectively drives the group of guide bars mounted thereon to move, and the group of guide bars drives the group of movable bars connected thereto to move along the same motion trajectory.

2. A material conveying device with a spiral shaft material spreading mechanism as claimed in claim 1, characterized in that: The screw shaft is a bidirectional screw shaft, that is, the feed end of the screw shaft is located in the middle of the screw shaft, and the ends of the screw shaft are located at both ends of the screw shaft; the rotational movement of the bidirectional screw shaft causes the material to be spread from the middle to both ends by the bidirectional screw shaft, and spread flat to the platform position located at the bottom of the bidirectional screw shaft.

3. A material conveying device with a spiral shaft material spreading mechanism as claimed in claim 1, characterized in that: The two spiral shafts are arranged side by side, the spiral shaft close to the material conveying direction is the first spiral shaft, and the spiral shaft close to the starting end of the platform is the second spiral shaft; The first spiral shaft and the second spiral shaft have opposite rotation directions; The rotational motion of the two screw shafts causes the material to be engulfed and crushed by the two screw shafts, spread from the feed end of the screw shaft to the end of the screw shaft, and spread to the platform position located at the bottom of the two screw shafts.

4. A material conveying device with a spiral shaft material spreading mechanism as claimed in claim 3, characterized in that: The blade portion on the upper portion of the second screw shaft moves in the material conveying direction; a material blocking unit is provided on the side of the second screw shaft close to the starting end of the platform to prevent the material from being pushed out of the starting end of the platform and falling.

5. A material conveying device with a spiral shaft material spreading mechanism as claimed in claim 4, characterized in that: The material blocking unit tilts the starting end of the platform upwards and surrounds the side of the second spiral shaft close to the starting end of the platform to prevent the material from being pushed out of the starting end of the platform and falling.

6. A material conveying device with a spiral shaft material spreading mechanism as claimed in claim 4, characterized in that: The material blocking unit is a material blocking plate provided on the side of the second screw shaft close to the starting end of the platform to prevent the material from being pushed out of the starting end of the platform and falling.

7. A material conveying device with a spiral shaft material spreading mechanism as claimed in claim 4, characterized in that: The material blocking unit is a third screw shaft arranged side by side on the second screw shaft near the starting end of the platform, and the rotation direction of the third screw shaft is the same as that of the first screw shaft.

8. A material conveying device with a screw shaft material spreading mechanism according to any one of claims 1 to 7, characterized in that: The spiral shaft material spreading mechanism further includes a material limiting unit; The material limiting unit includes a cover plate and a side plate; the cover plate covers the upper part of the screw shaft to limit the material from rolling out from the top of the screw shaft; the side plate is arranged at the end of the screw shaft to limit the material from being pushed out to the end of the screw shaft and falling from the side of the platform; The material limiting unit is provided with a feed port, which corresponds to the position of the feed end of the screw shaft and is used for feeding.

9. A material conveying device with a spiral shaft material spreading mechanism as claimed in claim 8, characterized in that: The feed inlet is connected to a material delivery pump for one-way material delivery.

10. A material conveying device with a spiral shaft material spreading mechanism as claimed in claim 8, characterized in that: A feeding unit is provided at the feed inlet, and the feeding unit includes a feed hopper, a rotating shaft and a stirring module provided on the rotating shaft; The feed hopper is arranged above the feed port; the middle part of the stirring module is hollow and close to the side wall of the feed hopper; the stirring module rotates driven by the rotating shaft to prevent material accumulation, stir and cut the material, and push the material to the bottom of the feed port in time.

11. A material conveying device with a screw shaft material spreading mechanism according to any one of claims 1 or 10, characterized in that: A material crushing device is provided above the platform on the side of the spiral shaft paving mechanism in the material conveying direction. The material crushing device is driven by a second driving device to make reciprocating motion at a certain angle to the material propulsion direction, thereby crushing, smoothing, squeezing, shearing and scraping the material on the platform.

12. A material conveying device with a screw shaft material spreading mechanism as claimed in claim 11, characterized in that: The angle is 90°.

13. A material conveying device with a screw shaft material spreading mechanism as claimed in claim 11, characterized in that: The second driving device comprises: a group of rolling driving central shafts, at least one rolling guide plate, and a group of rolling device driving mechanisms; The group of rolling drive central shafts includes at least two rolling drive central shafts; the group of rolling drive central shafts is fixed by at least one fixing plate; Each rolling guide plate is provided with at least two second eccentric devices, and each second eccentric device is provided with a rolling drive central shaft; The group of rolling device driving mechanisms includes at least two gear steering mechanisms, the first output end of each gear steering mechanism passes through the rolling drive central axis, and the second output end of each gear steering mechanism passes through the drive central axis; The driving center shaft drives the rolling driving center shaft to rotate through the gear steering mechanism, and the rolling driving center shaft drives the rolling guide plate to move through the second eccentric device. The movement direction of the rolling guide plate is at a certain angle to the movement direction of the platform, so that the rolling guide plate can roll, smooth, extrude, shear and scrape the material on the platform.

14. A material conveying device with a screw shaft material spreading mechanism as claimed in claim 11, characterized in that: The second driving device comprises: a group of rolling driving central shafts, at least one group of rolling guide plates, and a group of rolling device driving mechanisms; The group of rolling drive central shafts includes at least two rolling drive central shafts; the group of rolling drive central shafts is fixed by at least one fixing plate; The group of rolling guide plates includes at least two rolling guide plates, each of which is provided with at least two second eccentric devices, and each of the second eccentric devices is provided with a rolling drive central shaft; The group of rolling device driving mechanisms includes at least two gear steering mechanisms, the first output end of each gear steering mechanism passes through the rolling drive central axis, and the second output end of each gear steering mechanism passes through the drive central axis; The driving center shaft drives the rolling driving center shaft to rotate through the gear steering mechanism, and the rolling driving center shaft drives the group of rolling guide plates to move through the second eccentric device. The movement direction of the group of rolling guide plates is at a certain angle to the movement direction of the platform. The group of rolling guide plates is also fixedly connected to a rolling module. The rolling module is driven by the group of rolling guide plates to roll, smooth, extrude, shear and scrape the material on the platform.

15. A material conveying device with a screw shaft material spreading mechanism as claimed in claim 13 or 14, characterized in that: The group of rolling device driving mechanisms includes a second driving motor and a second transmission mechanism; the second driving motor and the second transmission mechanism drive the group of rolling driving central shafts to rotate, thereby driving the rolling guide plate to move; Alternatively, the group of rolling device driving mechanisms includes multiple second driving motors; each of the second driving motors drives one of the rolling driving central shafts to rotate, thereby driving the rolling guide plate to move.

16. A material conveying device with a screw shaft material spreading mechanism as claimed in claim 14, characterized in that: The rolling guide plates are arranged in multiple groups at intervals, and the rolling modules are arranged in multiple groups at intervals, so that during the material transportation process on the platform, the material can be ensured to be rolled, smoothed, squeezed, sheared, and scraped, and the ventilation above the material can be guaranteed to be smooth.

17. The material conveying device with a screw shaft material spreading mechanism according to claim 1, characterized in that: A lower platform is also provided below the platform, and the lower platform corresponds to the upper platform, and is also formed by at least two or more groups of grid bars stacked alternately; there is a gap between each adjacent grid bar; Each group of movable bars on the platform located on the upper layer is connected to a group of movable bars on the lower platform through a plurality of balanced distributed lower guide connecting bars arranged on the movable bars or guide bars on both sides thereof. Thus, each group of movable bars on the lower platform moves in the same trajectory as a group of movable bars on the platform on the upper layer.

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