A low-temperature belt drying machine for sludge

Abstract

The present invention provides a sludge low-temperature belt dryer, which relates to the technical field of dryers, and includes: a box body, wherein a vertical partition is arranged inside the box body to divide the inside of the box body into a first inner cavity and a second inner cavity, an adjusting mechanism, which is arranged at the bottom of the agglomerating mechanism and is used to control the agglomerating specifications of the agglomerating mechanism; a conveying mechanism sequentially conveys the agglomerated sludge and enters the first inner cavity through the air inlet for low-temperature hot air drying, and finally delivers it out through the discharge port. According to the present invention, the agglomerating specifications of the agglomerating mechanism are adjusted by the adjusting mechanism, and the size of the agglomerates can be adjusted according to the real-time humidity and temperature of the first inner cavity, so as to ensure that the agglomerated sludge blocks are completely dried during the transmission process, and three groups of conveying mechanisms sequentially convey the agglomerated sludge blocks, which enter the first inner cavity through the air inlet for low-temperature hot air drying during the transportation process, and finally the dried sludge blocks are delivered out through the discharge port.

Description

Technical Field

[0001] The invention relates to the technical field of drying machines, and in particular to a sludge low-temperature belt drying machine. Background Art

[0002] The sludge low-temperature belt dryer is a device used to treat sludge. It converts wet sludge into dry solid through the belt drying process under low-temperature conditions. First, the wet sludge is crushed to a certain specification by a crusher and then enters the low-temperature drying equipment. The sludge is evenly spread using a belt conveyor system, and the flowing air provided by the low-temperature hot air takes away the moisture and dries it, thereby reducing the volume and weight of the sludge and reducing the cost of processing and disposal.

[0003] In the prior art, the low-temperature belt sludge dryer has a general drying effect when drying sludge. The reasons are as follows:

[0004] 1) The size of the sludge crushed into pieces cannot be adjusted, which makes it impossible to adjust it according to the internal environment of the equipment;

[0005] 2) The holes on the belt conveyor system will affect the efficiency of its air flow. At the same time, when the holes are opened too large, the sludge will clog the holes and affect the drying effect;

[0006] 3) During the transportation process, only one side of each piece of crushed sludge contacts the belt conveyor system, and the drying effect of the contacting side is poor. Therefore, a low-temperature belt dryer for sludge is provided. Summary of the invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defect of poor drying effect of the low-temperature belt dryer in the prior art, thereby providing a sludge low-temperature belt dryer.

[0008] In order to solve the above problems, the present invention provides a sludge low-temperature belt dryer, which comprises:

[0009] A box body, wherein a vertical partition is arranged inside the box body to separate the inside of the box body into a first inner cavity and a second inner cavity, and a feeding port and a discharging port are respectively arranged on the top and side wall of the box body near the first inner cavity;

[0010] An air outlet and an air inlet are respectively arranged at the top and bottom of the box body near the first inner cavity, and a hot air blower is arranged near the air inlet;

[0011] A frame is arranged in the first inner cavity, and a block-forming mechanism is arranged on the frame near the feeding port to break the sludge into blocks;

[0012] An adjusting mechanism, arranged at the bottom of the block forming mechanism, for controlling the block forming specifications of the block forming mechanism;

[0013] A conveying mechanism, at least three groups of which are arranged on the frame, and the conveying mechanism sequentially conveys the agglomerated sludge and enters the first inner cavity through the air inlet for low-temperature hot air drying, and finally sends the sludge out of the box through the discharge port;

[0014] The control device is used to control the adjusting mechanism to adjust the block specifications of the block forming mechanism to adapt to the environment inside the box. The control device is also connected to a processor.

[0015] Preferably, the block forming mechanism comprises: a collecting bin, the collecting bin is arranged on the frame and connected to the feeding port, an extrusion port is arranged at the bottom of the collecting bin, a pair of stirring rods are arranged near the extrusion port, one end of the stirring rod is rotatably connected to one end of the collecting bin, and the other end of each stirring rod rotatably penetrates the other end of the collecting bin and is provided with a first gear and a second gear, the first gear and the second gear are meshed, a first motor is arranged on the outer wall of the box body near the first gear, the output shaft of the first motor rotatably penetrates the outer wall of the box body to connect the stirring rod, and the first motor is connected to the control device;

[0016] A plurality of groups of stirring blades are evenly arranged along the axial direction of the stirring rod, and each group of stirring blades is evenly arranged with the center of the stirring rod as the center of the circle.

[0017] Preferably, the adjustment mechanism comprises a pair of positioning plates, the pair of positioning plates are arranged oppositely at two sides of the bottom of the collection bin, a pair of positioning rods are arranged between the pair of positioning plates, a gap is left between the pair of positioning rods, two ends of one of the positioning rods are respectively connected to the positioning plates, two ends of the other positioning rod are respectively rotatably connected to the positioning plates, and a second motor is arranged outside the box body near one end of the other positioning rod, the output shaft of the second motor rotatably passes through the box body and is connected to one end of the positioning rod, and the second motor is connected to the control device;

[0018] A plurality of groups of extrusion teeth are evenly arranged in the radial direction of the positioning rod rotatably connected to the collection bin, and the outermost sides of the plurality of groups of extrusion teeth are respectively slidably connected to the outer wall of the positioning rod where the extrusion teeth are not arranged;

[0019] The length dimensions of the multiple groups of extrusion teeth along the axial direction of the positioning rod gradually increase, and each group of extrusion teeth is evenly spaced in the axial direction of the positioning rod.

[0020] Preferably, the three groups of conveying mechanisms are distributed in layers on the frame, one end of the conveying mechanism of the first group is located directly below the block forming mechanism, and the other end is arranged with a gap between the end of the frame away from the partition; one end of the conveying mechanism of the second group is arranged with a gap between the end close to the partition, and the other end is close to the end of the frame away from the partition; one end of the conveying mechanism of the third group is close to one end of the partition, and the other end is arranged with a gap between the end of the frame away from the partition and the bottom is connected to the transfer mechanism arranged outside the box;

[0021] The conveying directions of the conveying mechanisms of the first and third groups are the same and different from the conveying directions of the conveying mechanisms of the second group. The conveying direction of the conveying mechanisms of the first group is from the partition to away from the partition.

[0022] The frame is provided with a temperature sensor and a humidity sensor respectively near the three groups of the conveying mechanisms, and the temperature sensor and the humidity sensor are respectively connected to the processor.

[0023] Preferably, the conveying mechanism comprises: a pair of rotating shafts, both ends of the pair of rotating shafts are respectively rotatably connected to the rotating support arranged on the frame, one end of the rotating shaft also rotatably penetrates the side wall of the box body and is connected to the output shaft of the third motor arranged on the outer side wall of the box body, and the third motor is connected to the control device;

[0024] A pair of the rotating shafts are respectively provided with third gears near the rotating support, and a meshing transmission ring mechanism is respectively sleeved between the two third gears on the same side of the pair of the rotating shafts, and a plurality of transmission rods are evenly arranged between the two transmission ring mechanisms, and the two ends of the transmission rods are respectively rotatably connected to the transmission ring mechanisms, and a plurality of support blocks are respectively evenly arranged between two adjacent transmission rods, one end of the support block is staggeredly connected to one transmission rod in sequence, and the other end of the support block is respectively connected to the other two transmission rods adjacent to the one transmission rod; a gap is set between two adjacent support blocks, and a plurality of driving wheels are also arranged on the rotating shaft, and the driving wheels are respectively slidably connected to the side of the support block close to the driving wheel.

[0025] Preferably, the transmission ring mechanism includes: a positioning wheel, a plurality of positioning wheels are evenly arranged in a ring shape, two ends of the positioning rod respectively penetrate the positioning wheels corresponding to two of the transmission ring mechanisms, and the teeth of the third gear are respectively movably connected to two adjacent positioning wheels; a plurality of connecting strips are arranged at one end of the positioning wheel close to the transmission rod, and the two ends of the connecting strips are respectively rotatably connected to the two adjacent transmission rods; a plurality of side plates are respectively arranged on the other side of the positioning wheel, and the two bottom corners of the side plates are respectively rotatably connected to the two adjacent transmission rods.

[0026] Preferably, the support block is in the shape of a swastika, and comprises four vertical ends and two horizontal ends;

[0027] The four vertical ends are rotatably connected to two adjacent positioning rods respectively, the horizontal width of the vertical end is smaller than the horizontal distance between the two vertical ends; the horizontal width of the vertical end is smaller than the horizontal width of the two horizontal ends; the vertical length of the vertical end is greater than the vertical length of the horizontal end.

[0028] Preferably, it further comprises a flipping mechanism: two groups of the flipping mechanism are arranged at one end of the second group and the third group of the conveying mechanism close to the frame, and the flipping mechanism comprises: a fixed frame plate, and both sides of the fixed frame plate are connected to the frame through fixing strips respectively;

[0029] A flip plate is arranged inside the fixed frame plate, one side of the flip plate is hinged to the bottom of the fixed seat, the other side of the flip plate is movably connected to the top of the fixed seat, an electric cylinder is obliquely arranged in the middle of the fixed frame plate, the cylinder body of the electric cylinder is rotatably connected to the bottom of the fixed frame plate, the telescopic end of the electric cylinder is rotatably connected to the middle of the flip plate, and the electric cylinder is connected to the control device;

[0030] The bottoms of the flip plate and the fixed frame plate are respectively evenly provided with a plurality of first air holes and second air holes in a rectangular array.

[0031] Preferably, the transfer mechanism comprises: a support frame, the support frame is arranged near the discharge port, a transfer cylinder is arranged on the support frame, the transfer cylinder is arranged obliquely on the support frame, and one end of the transfer cylinder passes through the discharge port and is connected to a receiving bin, the receiving bin and the transfer cylinder are communicated, the receiving bin faces below one end of the third group of the conveying mechanism gaps, the other end of the transfer cylinder is provided with a discharge bin, and the discharge bin faces downward to the ground;

[0032] A spiral conveying blade is arranged inside the transfer cylinder, and both ends of the spiral conveying blade are rotatably connected to both ends of the transfer cylinder, and one end close to the discharge bin is connected to the output shaft of a fourth motor arranged outside the transfer cylinder, and the outermost side of the spiral conveying blade is slidably connected to the inner side of the transfer cylinder, and the fourth motor is connected to the control device.

[0033] Preferably, a heat exchange device is provided in the second inner cavity;

[0034] A first collecting hood is provided at the top of the first inner cavity, and the bottom of the first collecting hood is connected to the first inner cavity. A first one-way valve structure layer is provided in the first collecting hood, and a gap is provided between the first one-way valve structure layer and the top of the first collecting hood. A first connecting pipe is connected between the first collecting hood and the heat exchange device. A second connecting pipe is provided near the bottom of the box body on the partition, one end of the second connecting pipe is connected to the heat exchange device, and the other end extends into the first inner cavity. A one-way valve structure is provided in the second connecting pipe, and the flow direction of the one-way valve structure is from the second inner cavity to the first inner cavity;

[0035] A second collecting hood is provided in the air inlet, the top of the second collecting hood is connected to the first inner cavity, a second one-way valve structure layer is provided in the second collecting hood, a gap is set between the second one-way valve structure layer and the bottom of the second collecting tank, and the hot air blower is connected to the bottom of the second collecting hood;

[0036] The flow behavior of the first one-way valve structure layer is from the first inner cavity to the outside, and the flow behavior of the second one-way valve structure layer is from the outside of the box to the inside of the first inner cavity.

[0037] The sludge low-temperature belt dryer provided by the present invention has the following beneficial effects:

[0038] 1. In the present invention, fresh air is heated by a hot air blower and enters the first inner cavity from the air inlet and is discharged from the air outlet. The fresh air entering the first inner cavity has a certain temperature by heating, so that the wet sludge transmitted by the conveying mechanism is dried. The block specifications of the block forming mechanism are adjusted by the adjusting mechanism. The size of the block can be adjusted according to the real-time humidity and temperature of the first inner cavity, so as to ensure that the sludge blocks after block formation are completely dried during the transmission process. The three groups of conveying mechanisms convey the sludge blocks after block formation in turn. During the transportation process, the low-temperature hot air entering the first inner cavity through the air inlet is dried, and finally the dried sludge blocks are sent out through the discharge port;

[0039] 2. The present invention also controls the second motor to rotate the positioning rod through the control device, so that the extrusion teeth of different specifications are switched to form abutment with the positioning rod without extrusion teeth, and the space formed by the positioning rod and the extrusion teeth corresponds to the specifications of the sludge blocks, so that the temperature and humidity in the first inner cavity can be adjusted accordingly;

[0040] 3. The present invention also provides that the spaces between the multiple support bars on each conveying mechanism are filled with support blocks, and the gaps between two adjacent support blocks are set, so that the remaining gaps facilitate the fresh air to move upward layer by layer from the air inlet, and be conveyed to the upper level through the gaps to be dried; the gaps between the support blocks are set in this way, which can not only promote the drying of each layer, but also each support block is relatively independent. When the sludge at the top is relatively wet, its water and mud mixture will penetrate into the gaps and be filled with wet sludge. When it is in the first gear contact part and the relative direction, each support block is relatively movable, so that the sludge in the gaps can be rubbed out;

[0041] 4. The present invention also controls the state and parameters of the electric cylinder through a control device to drive the electric cylinder to extend and retract. When the sludge blocks fall, the electric cylinder extends to drive the flip plate to open a larger angle to flip the upper sludge blocks onto the support block for transportation. Each time a group of sludge blocks falls, the electric cylinder quickly extends and contracts to wait for the next group of sludge to fall, thereby realizing the flipping of the sludge blocks and promoting the rapid drying of the sludge blocks during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the three-dimensional structure of the general assembly of the present invention;

[0043] Figure 2 It is a schematic diagram of the hot air blower structure installation of the present invention;

[0044] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0045] Figure 4 This is a schematic diagram of the installation of the material receiving bin structure of the present invention;

[0046] Figure 5 It is a schematic diagram of the installation of the fixed frame plate structure of the present invention;

[0047] Figure 6 It is a schematic diagram of the installation of the rotating support structure of the present invention;

[0048] Figure 7 It is a schematic diagram of the installation of the support block structure of the present invention;

[0049] Figure 8 It is a schematic diagram of the installation of the positioning rod structure of the present invention;

[0050] Fig. 9 This is a schematic diagram of the installation of the stirring blade structure of the present invention;

[0051] Fig.10 It is a schematic diagram of the installation of the extrusion tooth structure of the present invention;

[0052] Fig.11This is a schematic diagram of the installation of the flip plate structure of the present invention;

[0053] Fig.12 It is a schematic diagram of the installation of the electric cylinder structure of the present invention.

[0054] The reference numerals are:

[0055] 1. Box body; 2. First inner cavity; 3. Second inner cavity; 4. Feeding port; 5. First vent hole; 6. Second vent hole; 8. Hot air blower; 9. Frame; 10. Collection bin; 11. Extrusion port; 12. Stirring rod; 13. First gear; 14. Second gear; 15. First motor; 16. Stirring blade; 17. Positioning plate; 18. Positioning rod; 19. Second motor; 20. Extrusion teeth; 21. Partition plate; 22. Rotating shaft; 23. Rotating support; 24. Third motor; 25. Third gear; 26. Transmission rod; 27 , support block; 28, driving wheel; 29, positioning wheel; 30, connecting strip; 31, side plate; 32, vertical end; 33, horizontal end; 34, fixed frame plate; 35, fixed strip; 36, flip plate; 37, electric cylinder; 38, support frame; 39, transfer cylinder; 40, collecting bin; 41, discharging bin; 42, fourth motor; 43, heat exchange device; 44, first collecting hood; 45, first one-way valve structure layer; 46, first connecting pipe; 47, second connecting pipe; 48, second collecting hood; 49, second one-way valve structure layer. DETAILED DESCRIPTION

[0056] like Figure 1-12 As shown, the present invention provides a sludge low-temperature belt dryer, which includes:

[0057] A box body 1 is provided with a vertical partition 21 inside the box body 1 to divide the inside of the box body 1 into a first inner cavity 2 and a second inner cavity 3. A feeding port 4 and a discharging port are provided on the top and side walls of the box body 1 near the first inner cavity 2, respectively. An air outlet and an air inlet are provided on the top and bottom of the box body 1 near the first inner cavity 2, respectively. A hot air blower 8 is provided near the air inlet. A frame 9 is provided in the first inner cavity 2. A block-forming mechanism is provided on the frame 9 near the feeding port 4 to break the sludge into blocks. An adjusting mechanism is provided at the bottom of the block-forming mechanism to control the block specifications of the block-forming mechanism. A conveying mechanism is provided in at least three groups on the frame 9. The conveying mechanism sequentially conveys the block-formed sludge and enters the first inner cavity 2 through the air inlet for low-temperature hot air drying, and finally delivers it from the discharging port. A control device is used to control the adjusting mechanism to adjust the block specifications of the block-forming mechanism to adapt to the environment inside the box. The control device is also connected to a processor. Figure 1-12As shown, a sludge low-temperature belt dryer is provided with a base frame at the bottom of the box body 1, so that a gap is maintained between the box body 1 and the ground, so as to promote the entry of fresh air from the bottom of the box body 1; the connection between the partition 21 and the inside of the box body 1 can be in the form of bonding or bolting, so as to separate it into a first inner cavity 2 and a second inner cavity 3; the second inner cavity is used for placing a heat exchange device, and at the same time, a heat dissipation window is provided outside the box body where the second inner cavity is located, so as to dissipate heat when the equipment is running; and the wet sludge enters the first inner cavity 2 from the feeding port 4 and is discharged from the discharging port; wherein, the fresh air is heated by the hot air blower 8 and then enters the first inner cavity 2 from the air inlet and is discharged from the air outlet, wherein the hot air blower 8 is commercially available, and the fresh air entering the first inner cavity 2 has a preliminary temperature by heating, so as to dry the wet sludge transmitted by the conveying mechanism; wherein, the frame 9 plays a supporting role, and the wet sludge is agglomerated by the agglomerating mechanism The sludge is transported by a conveying mechanism, wherein the block specifications of the block forming mechanism are adjusted by an adjusting mechanism, and the size of the blocks can be adjusted according to the humidity and temperature of the first inner cavity 2 obtained in real time. The drying capacity in the first inner cavity is different at different humidity and temperature. The size of the blocks is adjusted at different temperatures and humidity, so that each batch of sludge blocks entering the first inner cavity from the feeding port and coming out from the discharge port can achieve the expected drying effect, ensuring that the sludge blocks after block formation are completely dried during the transmission process; wherein, three groups of conveying mechanisms convey the block-forming sludge blocks in turn, and during the conveying process, the low-temperature hot air entering the first inner cavity through the air inlet is dried, and finally the dried sludge blocks are sent out through the discharge port; wherein, the control device is used to control the adjusting mechanism to adjust the block specifications, and the processor is used to solve the sensor signal, convert it into digital information, and transmit it to the terminal for viewing.

[0058] In some embodiments, the block forming mechanism includes: a collecting bin 10, the collecting bin 10 is arranged on the frame 9 and connected to the feeding port 4, an extrusion port 11 is arranged at the bottom of the collecting bin 10, and a pair of stirring rods 12 are arranged near the extrusion port 11, one end of the stirring rod 12 is rotatably connected to one end of the collecting bin 10, and the other end is rotatably penetrated through the other end of the collecting bin 10 and is provided with a first gear 13 and a second gear 14, the first gear 13 and the second gear 14 are meshed, and a first motor 15 is arranged on the outer wall of the box body 1 near the first gear 13, the output shaft of the first motor 15 rotatably penetrates the outer wall of the box body 1 to connect to the stirring rod 12, and the first motor 15 is connected to the control device; a plurality of groups of stirring blades 16 are evenly arranged along the axial direction of the stirring rod 12, and each group of stirring blades 16 is evenly arranged with the center of the stirring rod 12 as the center of the circle. Figure 1-12As shown, the connection between the collecting bin 10 and the frame 9 can be a bolt connection, and the edge of the collecting bin 10 and the feeding port 4 are connected by a sealing ring to ensure the sealing in the first inner cavity 2. The first motor 15 is commercially available, and the output shaft of the first motor 15 and the stirring rod 12 can be connected by a coupling. The working state and parameters of the first motor 15 are controlled by a control device to drive the stirring rod 12 to rotate. The stirring rod 12 is driven by the first gear 13 and the second gear 14, so that a pair of stirring rods 12 can rotate. The sludge added to the collecting bin 10 is stirred by multiple groups of stirring blades 16 arranged on the stirring rod 12 to make it evenly mixed, and at the same time, the sludge of different sizes inside is decomposed, and the wet sludge is driven to move to the extrusion port 11 to promote its agglomeration. Wherein, when the stirring rod continues to stir, the stirring blade rolls the wet sludge in the collecting bin and discharges it through the extrusion port. When the stirring rod stops stirring, it stops conveying to the extrusion port, and the extruded sludge is agglomerated.

[0059] In some embodiments, the adjustment mechanism includes a pair of positioning plates 17, the pair of positioning plates 17 are oppositely arranged on both sides of the bottom of the collection bin 10, a pair of positioning rods 18 are arranged between the pair of positioning plates 17, a gap is left between the pair of positioning rods 18, two ends of one of the positioning rods 18 are respectively connected to the positioning plates 17, two ends of the other positioning rod are respectively rotatably connected to the positioning plates, and a second motor 19 is arranged outside the box body near one end of the other positioning rod, the output shaft of the second motor rotatably passes through the box body and is connected to one end of the positioning rod, and the second motor is connected to the control device;

[0060] A plurality of groups of extrusion teeth 20 are evenly arranged in the radial direction of the positioning rod rotatably connected to the collection bin, and the outermost sides of the plurality of groups of extrusion teeth are respectively slidably connected to the outer wall of the positioning rod where the extrusion teeth are not arranged;

[0061] The lengths of the multiple groups of extrusion teeth along the axial direction of the positioning rod gradually increase, and each group of extrusion teeth is evenly spaced in the axial direction of the positioning rod. Figure 1-12As shown, a pair of positioning plates 17 and the two sides of the bottom of the collecting bin 10 can be connected by bonding or bolts, wherein, when the wet sludge in the collecting bin 10 moves toward its extrusion port 11, due to the different groups of extrusion teeth 20 of different specifications evenly distributed on a pair of positioning rods 18, the sludge passing through the extrusion port 11 is divided into multiple groups or blocks, and the block specifications are driven by the second motor to rotate the positioning rod on which the extrusion teeth are set to rotate, and by switching the extrusion teeth of different specifications, the extruded sludge blocks have different specifications; wherein, the second motor 19 is commercially available, and the output shaft of the second motor 19 and the positioning rod are connected. The space formed by the positioning rod and the extrusion teeth corresponds to the specifications of the sludge blocks, so that it can be adjusted according to the temperature and humidity in the first inner cavity 2. The outermost side of the extrusion teeth can be an arc or an outer extension edge in the radial direction of the positioning rod, so that when the positioning rod rotates, the extrusion teeth and another positioning rod can slide smoothly and adjust the abutment between the extrusion teeth of different specifications and the positioning rod.

[0062] In some embodiments, the three groups of conveying mechanisms are distributed in layers on the frame 9, one end of the conveying mechanism of the first group is located directly below the block forming mechanism, and the other end is spaced apart from the end of the frame 9 away from the partition 21; one end of the conveying mechanism of the second group is spaced apart from the end close to the partition 21, and the other end is close to the end of the frame 9 away from the partition 21; one end of the conveying mechanism of the third group is close to the partition 21, and the other end is spaced apart from the end of the frame 9 away from the partition 21, and is connected to the transfer mechanism disposed outside the box 1 below; the conveying directions of the first and third groups of conveying mechanisms are the same, and are different from the conveying directions of the second group of conveying mechanisms, and the conveying direction of the first group of conveying mechanisms is from the partition 21 to the direction away from the partition 21; temperature sensors and humidity sensors are respectively disposed on the frame 9 near the three groups of conveying mechanisms, and the temperature sensors and humidity sensors are respectively connected to the processor. Figure 1-12As shown, the three groups of conveying mechanisms are distributed in a hierarchy, and are conveyed by the top first group of conveying mechanisms to the middle second group of conveying mechanisms, and finally to the bottom third group of conveying mechanisms, and are conveyed out of the first inner cavity 2 through the transfer mechanism below the third group of conveying mechanisms, wherein the conveying directions of the conveying mechanisms of the first and third groups are the same, and are different from the conveying directions of the conveying mechanisms of the second group; wherein the humidity sensor and the temperature sensor are both commercially available, and are respectively used to obtain the temperature and humidity data of the three groups of conveying mechanisms, so as to adjust the specifications of the blocks accordingly; by obtaining the humidity signal and the temperature signal, the post-processor solves them to obtain the temperature data and humidity data of the corresponding three groups, and according to the temperature data, the humidity data combined with the empirical value and the historical data, the specifications of the sludge blocks at the corresponding temperature and humidity are controlled, so that when conveyed at different temperatures and humidities, it is ensured that the sludge blocks conveyed from the transfer mechanism can obtain a better drying effect.

[0063] In some embodiments, the conveying mechanism includes: a pair of rotating shafts 22, both ends of the pair of rotating shafts 22 are respectively rotatably connected to a rotating support 23 arranged on the frame 9, one end of the rotating shaft 22 also rotatably passes through the side wall of the box body 1 and is connected to the output shaft of a third motor 24 arranged on the outer wall of the box body 1, and the third motor 24 is connected to the control device; a pair of the rotating shafts 22 are respectively provided with third gears 25 near the rotating support 23, and a meshing transmission ring mechanism is respectively sleeved between the two third gears 25 on the same side of the pair of rotating shafts 22, and the two transmission ring mechanisms There are multiple transmission rods 26 evenly arranged between the two ends of the transmission rods 26, and the two ends of the transmission rods 26 are respectively connected to the transmission ring mechanism for rotation. There are multiple support blocks 27 evenly arranged between two adjacent transmission rods 26, and one end of the support block 27 is staggeredly connected to one transmission rod 26, and the other ends of the support blocks 27 are respectively connected to the other two transmission rods adjacent to the transmission rod 26; there is a gap between two adjacent support blocks 27, and multiple driving wheels 28 are also arranged on the rotating shaft 22, and the driving wheels 28 are respectively connected to the support blocks 27 on the side close to the driving wheels 28 for sliding. Figure 1-12As shown, a pair of rotating shafts 22 of the conveying mechanism are rotatably connected to the rotating support 23 on the frame 9, and one end of each of the rotating shafts 22 is connected through the output shaft of the third motor 24 on the outer wall of the box body 1. The third motor 24 is commercially available. The output shaft of the third motor 24 and the rotating shaft 22 can be connected by a coupling. By controlling the working state and parameters of the third motor 24, the rotating shaft 22 is driven to rotate, and then the other rotating shaft 22 is transmitted through a transmission ring mechanism meshed with two third gears 25 on the same side of the rotating shaft 22, so that the two transmission ring mechanisms and the rotating rods rotatably connected therebetween form a conveying system as a whole, and a plurality of support blocks 27 are evenly arranged between two adjacent transmission rods 26, one end of the support block 27 is staggeredly connected to one transmission rod 26 in sequence, and the other ends of the support blocks 27 are respectively connected to the other two adjacent support rods, so that each conveying mechanism The spaces between the multiple support rods are covered with support blocks 27, and gaps are set between two adjacent support blocks 27. The remaining gaps facilitate the movement of fresh air upward from the air inlet layer by layer, and are transported to the next level through the gaps to be dried. The gaps between the support blocks 27 are not only arranged in this way to promote the drying of each layer, but also each support block 27 is relatively independent. When the sludge at the top is relatively wet, its water and mud mixture will penetrate into the gaps and be filled with wet sludge. When it is in contact with the first gear 13 and running relatively toward one side, each support block 27 is relatively movable, so that the sludge in the gaps can be rubbed out. At the same time, the driving wheel 28 and the support block 27 are relatively slidably connected, and a rubber pad can be set on the outside of the driving wheel to increase the friction of the driving wheel 28 on the support block 27, so as to promote the driving wheel 28 to move the support block 27.

[0064] In some embodiments, the transmission ring mechanism includes: a positioning wheel 29, a plurality of positioning wheels 29 are evenly arranged in a ring shape, the two ends of the positioning rod 18 respectively penetrate the positioning wheels 29 corresponding to the two transmission ring mechanisms, and the teeth of the third gear 25 are respectively movably connected to the two adjacent positioning wheels 29; a plurality of connecting strips 30 are arranged at one end of the positioning wheel 29 close to the transmission rod 26, and the two ends of the connecting strips 30 are respectively rotatably connected to the two adjacent transmission rods 26; a plurality of side plates 31 are respectively arranged on the other side of the positioning wheel 29, and the two bottom corners of the side plates 31 are respectively rotatably connected to the two adjacent transmission rods 26. Figure 1-12As shown, a plurality of positioning wheels 29 are evenly arranged in a ring shape, and both ends of the positioning rod 18 respectively penetrate the positioning wheels 29 corresponding to the two transmission ring mechanisms, and the third gear 25 is movably connected to the two adjacent positioning wheels 29 respectively. Through the rotation of the third gear 25, the teeth of the third gear 25 are respectively in contact with and disengaged from the two positioning wheels 29, so as to drive the entire transmission ring mechanism to transmit; wherein, a plurality of connecting strips 30 are arranged at one end of the positioning wheel 29 close to the transmission rod 26, and the two ends of the connecting strip 30 are respectively rotatably connected to the two adjacent transmission rods 26; a plurality of side plates 31 are respectively arranged on the other side of the positioning wheel 29, and the two bottom corners of the side plate 31 are respectively rotatably connected to the two adjacent transmission rods 26, and the side plates 31 and the connecting strips 30 relatively connect all the positioning wheels 29 into a ring shape, so as to facilitate transmission, and the side plates 31 prevent the sludge blocks above from falling from both sides during the conveying process.

[0065] In some embodiments, the support block 27 is shaped like a swastika, and includes four vertical ends 32 and two horizontal ends 33; the four vertical ends 32 are rotatably connected to two adjacent positioning rods 18, respectively; the horizontal width of the vertical end 32 is smaller than the horizontal distance between the two vertical ends 32; the horizontal width of the vertical end 32 is smaller than the horizontal width of the two horizontal ends 33; the vertical length of the vertical end 32 is larger than the vertical length of the horizontal end 33. Figure 1-12 As shown, the support block 27 is shaped like a swastika, and the four vertical ends 32 of the support block 27 are rotatably connected to two adjacent positioning rods 18 respectively, and the horizontal width of the vertical end 32 is smaller than the horizontal distance between the two vertical ends 32, the horizontal width of the vertical end 32 is smaller than the horizontal width of the two horizontal ends 33, and the vertical length of the vertical end 32 is larger than the vertical length of the horizontal end 33. The advantage of such a setting is that the support blocks 27 can be assembled in modular form in sequence, maintaining a small gap between the two transmission ring mechanisms, and at the same time satisfying that there is a gap between adjacent support blocks 27 after assembly to facilitate the upward direction of fresh air.

[0066] In some embodiments, a flipping mechanism is also included: two groups of the flipping mechanism are arranged in the second group and the third group, and one end of the conveying mechanism is close to the frame 9, and the flipping mechanism includes: a fixed frame plate 34, and the two sides of the fixed frame plate 34 are connected to the frame 9 through fixing bars 35 respectively; a flipping plate 36 is arranged inside the fixed frame plate 34, and one side of the flipping plate 36 is hinged to the bottom of the fixed seat, and the other side of the flipping plate 36 is movably connected to the top of the fixed seat; an electric cylinder 37 is obliquely arranged in the middle of the fixed frame plate 34, and the cylinder body of the electric cylinder 37 is rotatably connected to the bottom of the fixed frame plate 34, and the telescopic end of the electric cylinder 37 is rotatably connected to the middle of the flipping plate 36, and the electric cylinder 37 is connected to the control device; the bottom of the flipping plate and the fixed frame plate are respectively evenly provided with a plurality of first air holes 5 and second air holes 6 in a rectangular array. Figure 1-12 As shown, when the sludge block falls from the first group of conveying mechanisms to the second group of conveying mechanisms and the second group of conveying mechanisms to the third group of conveying mechanisms, due to the influence of gravity, since the contact side has not been completely dried, its weight is relatively high, and the previous contact side is still in contact with the next conveying mechanism. At this time, the flip mechanism is used to flip it, so that the sludge block is flipped 180° relative to the previous conveying mechanism, so that it can be evenly dried; wherein, the angle range between the flip plate 36 and the bottom of the fixed frame plate 34 is between 30° and 45°, at which the flip plate 36 can better hold the sludge block, and then the state and parameters of the electric cylinder 37 are controlled by the control device to drive the electric cylinder 37 to extend and retract. When the sludge block falls on the flip plate, the electric cylinder 37 is driven to extend and retract. The cylinder 37 extends, driving the flip plate 36 to open a larger angle, so as to flip the upper sludge block to the support block 27 for transportation, thereby realizing the flipping of the sludge block; wherein, each time a group of sludge blocks falls, the electric cylinder 37 quickly completes the extension and contraction, waiting for the next group of sludge to fall, thereby realizing the flipping of the sludge blocks and promoting the rapid drying of the sludge blocks during transportation; the first air vent 5 and the second air vent 6 arranged at the bottom of the flip plate and the fixed frame plate carry the humid air from the bottom to the top in the first inner cavity, and stick to the flip plate through the first air vent and the second air vent, so that when the sludge block falls to the flip plate, the viscosity of the sludge block and the flip plate is increased, so that it will not slide down immediately, but will be separated after the flip plate is flipped, effectively ensuring the normal flipping.

[0067] In some embodiments, the transfer mechanism includes: a support frame 38, the support frame 38 is arranged near the discharge port, a transfer cylinder 39 is arranged on the support frame 38, the transfer cylinder 39 is inclinedly arranged on the support frame 38, and one end of the transfer cylinder 39 passes through the discharge port and is connected to a receiving bin 40, the receiving bin 40 and the transfer cylinder 39 are connected, the receiving bin 40 is below one end of the third group of the conveying mechanism gap, and a discharge bin 41 is arranged at the other end of the transfer cylinder 39, the discharge bin 41 is downwardly facing the ground; spiral conveying blades are arranged inside the transfer cylinder 39, the two ends of the spiral conveying blades are rotatably connected to the two ends of the transfer cylinder 39, and the end close to the discharge bin 41 is connected to the output shaft of a fourth motor 42 arranged outside the transfer cylinder 39, the outermost side of the spiral conveying blades is slidably connected to the inner side of the transfer cylinder 39, and the fourth motor 42 is connected to the control device. Figure 1-12 As shown, the fourth motor 42 is commercially available, and the fourth motor 42 and the spiral conveying blade can be connected by a coupling. The state and parameters of the fourth motor 42 are controlled by the control device, so that the fourth motor 42 drives the spiral conveying blade to transport the dried sludge blocks collected by the receiving bin 40 from the first inner cavity 2 through the transfer cylinder 39, and discharge them through the discharge bin 41. A transport vehicle can be parked under the discharge bin 41 to transport them; wherein, a corresponding sealing ring is arranged between the transfer cylinder 39 and the discharge port to promote the sealing effect of the first inner cavity 2.

[0068] In some embodiments, a heat exchange device 43 is provided in the second inner cavity 3; a first collecting cover 44 is provided at the top of the first inner cavity 2, and the bottom of the first collecting cover 44 is connected to the first inner cavity 2, a first one-way valve structure layer 45 is provided in the first collecting cover 44, and a gap is provided between the first one-way valve structure layer 45 and the top of the first collecting cover 44, a first connecting pipe 46 is connected between the first collecting cover 44 and the heat exchange device 43, and a second connecting pipe 47 is provided near the bottom of the box body 1 on the partition 21, one end of the second connecting pipe 47 is connected to the heat exchange device 43, and the other end extends into the first inner cavity 2 , a one-way valve structure is arranged in the second connecting pipe 47, and the flow direction of the one-way valve structure is from the second inner cavity 3 to the first inner cavity 2; a second collecting hood 48 is arranged in the air inlet, and the top of the second collecting hood 48 is connected with the first inner cavity 2, and a second one-way valve structure layer 49 is arranged in the second collecting hood 48, and a gap is arranged between the second one-way valve structure layer 49 and the bottom of the second collecting tank, and the hot air blower 8 is connected with the bottom of the second collecting hood 48; the flow behavior of the first one-way valve structure layer 45 is from the first inner cavity 2 to the outside, and the flow behavior of the second one-way valve structure layer 49 is from the outside of the box body 1 to the inside of the first inner cavity 2. Figure 1-12As shown, a heat exchange device 43 is arranged in the second inner cavity 3. The heat exchange device 43 is commercially available and can be an integration of an evaporator and a condenser. The low-temperature humid air collected by the first collecting hood 44 is passed into the evaporator through the first connecting pipe 46. The water carried in the evaporator is condensed and discharged for sewage treatment. The condensed and dehydrated air is heated by the condenser and then enters the bottom of the first inner cavity 2 again through the second connecting pipe 47 and moves upward layer by layer. At the same time, the first one-way valve structure layer 45 in the first collecting hood 44 and the second one-way valve structure layer 49 in the second collecting hood 48 have the same flow direction, so that the dry air heated by the hot air blower 8 outside the box body 1 enters the first inner cavity 2 and dries the wet sludge blocks and then is discharged through the second one-way valve structure layer 49. It can effectively promote the circulation and flow of air in the first inner cavity 2, wherein the first one-way valve structure layer 45 and the second one-way valve structure layer 49 can both be Tesla one-way valve mechanisms, which can promote one-way flow of the circulation, and at the same time, promote the rapid passage of the fluid, so that the hot air can be quickly replaced and the wet air can be discharged in the first inner cavity 2, which promotes the drying of the wet sludge blocks transported inside; wherein, a receiving plate can be set on the frame above the second one-way valve structure layer 49 to receive the fine soil dropped from the bottom group of conveying mechanisms, and then clean it regularly, wherein the receiving plate and the second one-way valve structure layer 49 have a smaller gap, and have a larger gap with the bottom group of conveying mechanisms to avoid affecting the flow of air in the first inner cavity.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A low-temperature sludge belt dryer, characterized in that: include: A box body, wherein a vertical partition is arranged inside the box body to separate the inside of the box body into a first inner cavity and a second inner cavity, and a feeding port and a discharging port are respectively arranged on the top and side wall of the box body near the first inner cavity; An air outlet and an air inlet are respectively arranged at the top and bottom of the box body near the first inner cavity, and a hot air blower is arranged near the air inlet; A frame is arranged in the first inner cavity, and a block-forming mechanism is arranged on the frame near the feeding port to break the sludge into blocks; An adjusting mechanism, arranged at the bottom of the block forming mechanism, for controlling the block forming specifications of the block forming mechanism; A conveying mechanism, at least three groups of which are arranged on the frame, and the conveying mechanism sequentially conveys the agglomerated sludge and enters the first inner cavity through the air inlet for low-temperature hot air drying, and finally sends the sludge out of the box through the discharge port; A control device, used for controlling the adjusting mechanism to adjust the block specifications of the block forming mechanism to adapt to the environment in the box, and the control device is also connected to a processor; The block forming mechanism comprises: a collecting bin, the collecting bin is arranged on the frame and connected to the feeding port, an extrusion port is arranged at the bottom of the collecting bin, a pair of stirring rods are arranged near the extrusion port, one end of the stirring rod is rotatably connected to one end of the collecting bin, and the other end of the stirring rod is rotatably penetrated through the other end of the collecting bin and is provided with a first gear and a second gear, the first gear and the second gear are meshed, a first motor is arranged on the outer wall of the box body near the first gear, the output shaft of the first motor rotatably penetrates the outer wall of the box body to connect the stirring rod, and the first motor is connected to the control device; A plurality of groups of stirring blades are evenly arranged along the axial direction of the stirring rod, and each group of stirring blades is evenly arranged with the center of the stirring rod as the center of the circle; The adjustment mechanism includes a pair of positioning plates, the pair of positioning plates are arranged oppositely at two sides of the bottom of the collection bin, a pair of positioning rods are arranged between the pair of positioning plates, a gap is left between the pair of positioning rods, two ends of one of the positioning rods are respectively connected to the positioning plates, two ends of the other positioning rod are respectively rotatably connected to the positioning plates, and a second motor is arranged outside the box body near one end of the other positioning rod, the output shaft of the second motor rotatably passes through the box body and is connected to one end of the positioning rod, and the second motor is connected to the control device; A plurality of groups of extrusion teeth are evenly arranged in the radial direction of the positioning rod rotatably connected to the collection bin, and the outermost sides of the plurality of groups of extrusion teeth are respectively slidably connected to the outer wall of the positioning rod where the extrusion teeth are not arranged; The lengths of the multiple groups of extrusion teeth along the axial direction of the positioning rod gradually increase, and each group of extrusion teeth is evenly spaced in the axial direction of the positioning rod; The three groups of conveying mechanisms are distributed in layers on the frame, one end of the conveying mechanism of the first group is located directly below the block forming mechanism, and the other end is arranged with a gap between the end of the frame away from the partition; one end of the conveying mechanism of the second group is arranged with a gap between the end close to the partition, and the other end is close to the end of the frame away from the partition; one end of the conveying mechanism of the third group is close to one end of the partition, and the other end is arranged with a gap between the end of the frame away from the partition and is connected to the transfer mechanism arranged outside the box at the bottom; The conveying directions of the conveying mechanisms of the first and third groups are the same and different from the conveying directions of the conveying mechanisms of the second group. The conveying direction of the conveying mechanisms of the first group is from the partition to away from the partition. The frame is provided with a temperature sensor and a humidity sensor respectively near the three groups of the conveying mechanisms, and the temperature sensor and the humidity sensor are respectively connected to the processor; It also includes a flipping mechanism: two groups of the flipping mechanism are arranged at one end of the second group and the third group of the conveying mechanism close to the frame, and the flipping mechanism includes: a fixed frame plate, and both sides of the fixed frame plate are connected to the frame through fixed strips respectively; A flip plate is arranged inside the fixed frame plate, one side of the flip plate is hinged to the bottom of the fixed frame plate, the other side of the flip plate is movably connected to the top of the fixed frame plate, an electric cylinder is obliquely arranged in the middle of the fixed frame plate, the cylinder body of the electric cylinder is rotatably connected to the bottom of the fixed frame plate, the telescopic end of the electric cylinder is rotatably connected to the middle of the flip plate, and the electric cylinder is connected to the control device; The bottoms of the flip plate and the fixed frame plate are respectively evenly provided with a plurality of first air holes and second air holes in a rectangular array.

2. The sludge low-temperature belt dryer according to claim 1 is characterized in that: The conveying mechanism comprises: a pair of rotating shafts, both ends of the pair of rotating shafts are respectively rotatably connected to the rotating support arranged on the frame, one end of the rotating shaft also rotatably penetrates the side wall of the box body and is connected to the output shaft of the third motor arranged on the outer side wall of the box body, and the third motor is connected to the control device; A pair of the rotating shafts are respectively provided with third gears near the rotating support, and a meshing transmission ring mechanism is respectively sleeved between the two third gears on the same side of the pair of the rotating shafts, and a plurality of transmission rods are evenly arranged between the two transmission ring mechanisms, and the two ends of the transmission rods are respectively rotatably connected to the transmission ring mechanisms, and a plurality of support blocks are respectively evenly arranged between two adjacent transmission rods, one end of the support block is staggeredly connected to one transmission rod in sequence, and the other end of the support block is respectively connected to the other two transmission rods adjacent to the one transmission rod; a gap is set between two adjacent support blocks, and a plurality of driving wheels are also arranged on the rotating shaft, and the driving wheels are respectively slidably connected to the side of the support block close to the driving wheel.

3. The sludge low-temperature belt dryer according to claim 2 is characterized in that: The transmission ring mechanism includes: a positioning wheel, a plurality of positioning wheels are evenly arranged in a ring shape, two ends of the positioning rod respectively penetrate the positioning wheels corresponding to two of the transmission ring mechanisms, and the teeth of the third gear are movably connected to two adjacent positioning wheels; a plurality of connecting strips are arranged at one end of the positioning wheel close to the transmission rod, and the two ends of the connecting strips are respectively rotatably connected to the two adjacent transmission rods; a plurality of side plates are respectively arranged on the other side of the positioning wheel, and the two bottom corners of the side plates are respectively rotatably connected to the two adjacent transmission rods.

4. The sludge low-temperature belt dryer according to claim 2, characterized in that: The support block is in the shape of a swastika, and comprises four vertical ends and two horizontal ends; The four vertical ends are rotatably connected to two adjacent positioning rods respectively, the horizontal width of the vertical end is smaller than the horizontal distance between the two vertical ends; the horizontal width of the vertical end is smaller than the horizontal width of the two horizontal ends; the vertical length of the vertical end is greater than the vertical length of the horizontal end.

5. The sludge low-temperature belt dryer according to claim 2, characterized in that: The transfer mechanism comprises: a support frame, the support frame is arranged near the discharge port, a transfer cylinder is arranged on the support frame, the transfer cylinder is arranged obliquely on the support frame, and one end of the transfer cylinder passes through the discharge port and is connected to a receiving bin, the receiving bin and the transfer cylinder are communicated, the receiving bin faces below one end of the third group of the conveying mechanism gaps, the other end of the transfer cylinder is arranged with a discharge bin, and the discharge bin faces downward to the ground; A spiral conveying blade is arranged inside the transfer cylinder, and both ends of the spiral conveying blade are rotatably connected to both ends of the transfer cylinder, and one end close to the discharge bin is connected to the output shaft of a fourth motor arranged outside the transfer cylinder, and the outermost side of the spiral conveying blade is slidably connected to the inner side of the transfer cylinder, and the fourth motor is connected to the control device.

6. The sludge low-temperature belt dryer according to claim 3, characterized in that: A heat exchange device is provided in the second inner cavity; A first collecting hood is provided at the top of the first inner cavity, and the bottom of the first collecting hood is connected to the first inner cavity. A first one-way valve structure layer is provided in the first collecting hood, and a gap is provided between the first one-way valve structure layer and the top of the first collecting hood. A first connecting pipe is connected between the first collecting hood and the heat exchange device. A second connecting pipe is provided near the bottom of the box body on the partition, one end of the second connecting pipe is connected to the heat exchange device, and the other end extends into the first inner cavity. A one-way valve structure is provided in the second connecting pipe, and the flow direction of the one-way valve structure is from the second inner cavity to the first inner cavity; A second collecting hood is arranged in the air inlet, the top of the second collecting hood is communicated with the first inner cavity, a second one-way valve structure layer is arranged in the second collecting hood, a gap is arranged between the second one-way valve structure layer and the bottom of the second collecting hood, and the hot air blower is communicated with the bottom of the second collecting hood; The flow behavior of the first one-way valve structure layer is from the first inner cavity to the outside, and the flow behavior of the second one-way valve structure layer is from the outside of the box to the inside of the first inner cavity.

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