Low-temperature belt type sludge drying device based on waste heat of lime kiln

Abstract

The utility model relates to the technical field of sludge drying equipment, and discloses a low-temperature belt type sludge drying device based on waste heat of a lime kiln, which comprises a sludge drying box, supporting columns are fixedly mounted at four corners of the bottom of the sludge drying box, a U-shaped shielding plate is fixedly mounted on the left side of the sludge drying box, and three conveying belts are arranged in the sludge drying box. Three flattening plates are fixedly installed in the sludge drying box, a heat utilization mechanism is arranged in the sludge drying box, a uniform heat dissipation mechanism is arranged in the sludge drying box, after use, waste gas penetrates through a coiled pipe, water in a water tank is heated through contained residual heat, the heat is fully utilized, and the heat utilization efficiency is improved. And the problem that a large amount of heat and electric energy are wasted due to the fact that an air-cooling quenching device is needed in the follow-up process of the waste gas to reduce the exhaust gas temperature is solved, the fanning plate swings in a reciprocating mode, the input waste gas is rapidly dispersed to all angles in the sludge drying box, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge drying equipment, in particular to a low-temperature belt-type sludge drying device based on waste heat of a lime kiln. Background Art

[0002] Lime kiln is used to coordinately dry and dispose of sludge. The drying equipment can dry the moisture content in the sludge to less than 20%, which can achieve fuel substitution and re-enter the high-temperature section of the lime kiln for combustion, thereby reducing coal consumption and achieving the final harmless disposal of the sludge.

[0003] The existing low-temperature belt sludge drying technology, low-temperature belt drying refers to the use of a sludge noodle machine to pre-treat the sludge, squeeze the dehydrated sludge into thin noodles, and then place it on the air-drying conveyor belt. After the sludge is input into the air-drying device, part of the air-dried sludge is transferred to the lower conveyor belt at the tail end of the upper conveyor belt, and then continues to be transported forward. An exhaust device is installed above the upper conveyor belt, which can suck dry air from the outside of the device, so that the air enters the drying device from the bottom of the device and flows through the entire conveyor belt. When the air flows through the sludge laid on the conveyor belt, it takes away the moisture in the sludge. However, in actual use, this technology requires a large amount of waste heat, and there is a large amount of flue gas above 300°C after the vertical waste heat device of the lime kiln. The production process requires an air-cooled quenching device to reduce the exhaust temperature, thereby wasting a lot of heat and electricity. Therefore, it is necessary to improve a low-temperature belt sludge drying device based on lime kiln waste heat to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a low-temperature belt-type sludge drying device based on the waste heat of a lime kiln, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-temperature belt-type sludge drying device based on waste heat from a lime kiln, comprising a sludge drying box, support columns are fixedly installed at the four corners of the bottom of the sludge drying box, a U-shaped shield is fixedly installed on the left side of the sludge drying box, three conveyor belts are arranged inside the sludge drying box, three paving plates are fixedly installed inside the sludge drying box, a heat utilization mechanism is arranged inside the sludge drying box, and a uniform heat dissipation mechanism is arranged inside the sludge drying box.

[0006] The heat utilization mechanism includes a heat exchange component and an exhaust component, and the exhaust component is arranged inside the heat exchange component.

[0007] Preferably, the heat exchange component includes a water tank, which is fixedly installed on the top of the sludge drying box, a water inlet pipe is fixedly installed on the top of the water tank, a water pump A is fixedly installed on the top of the water tank, a water supply pipe A is fixedly installed on the top of the water pump A, a diversion pipe is fixedly installed on the back of the sludge drying box, six water supply pipes B are fixedly installed on the front of the diversion pipe, a water pump B is fixedly installed on the top of the water tank, a return pipe is fixedly installed on the top of the water pump B, a collecting pipe is fixedly installed on the front of the sludge drying box, six U-shaped cavities are opened inside the sludge drying box, hot water enters the U-shaped cavity to heat the inside of the sludge drying box.

[0008] Preferably, six water pipes B are fixedly installed on the back of the collecting pipe, and the water pipes B are fixedly installed inside the sludge drying box, and the end of the water pipe B close to the U-shaped baffle is communicated with the U-shaped cavity, the end of the water pipe A away from the water pump A is fixedly installed on the diversion pipe, and the end of the return pipe away from the water pump B is fixedly installed on the collecting pipe, so that the water cooled after use can enter the water tank again for circulation and heat exchange.

[0009] Preferably, the exhaust component includes an air pump, which is fixedly installed on the top of the sludge drying box, an air intake pipe is fixedly installed on the bottom of the air pump, an air supply pipe is fixedly installed on the top of the air pump, a baffle is fixedly installed inside the air supply pipe, a serpentine pipe is fixedly installed on the end of the air supply pipe away from the air pump, a connecting pipe is fixedly installed on the end of the serpentine pipe away from the air supply pipe, a fixing block is fixedly installed inside the water tank, and the serpentine pipe is suspended and fixed, so as to achieve a better heat exchange effect.

[0010] Preferably, the serpentine pipe is arranged inside the fixed block, the suction pipe is fixedly installed inside the sludge drying box, and the serpentine pipe is arranged inside the water tank to heat the water inside the water tank.

[0011] Preferably, the uniform heat dissipation mechanism includes a rectangular block, which is fixedly installed at the bottom of the sludge drying box, an air inlet pipe is fixedly installed at the bottom of the rectangular block, a filter is slidably installed inside the rectangular block, two springs are fixedly installed inside the filter, a block is fixedly installed at one end of the spring away from the filter, a fan is arranged inside the rectangular block, a rotating shaft is fixedly installed at the output end of the fan, a rotating block is fixedly installed on the top of the rotating shaft, a movable block is rotatably installed inside the rotating block, two protrusions are fixedly installed inside the sludge drying box, a fan plate is rotatably installed inside the protrusion, so as to quickly disperse the input exhaust gas to various angles inside the sludge drying box, heat up faster, and improve work efficiency.

[0012] Preferably, the card block is slidably installed inside the filter, and corresponding positions of the rectangular block and the card block are provided with card slots, and the card block is connected inside the card slot, and the movable block is slidably installed inside the fan plate, so that the fan plate swings back and forth.

[0013] Compared with the prior art, the utility model provides a low-temperature belt-type sludge drying device based on waste heat from a lime kiln, which has the following beneficial effects:

[0014] 1. The low-temperature belt sludge drying device based on the waste heat of the lime kiln has a heat utilization mechanism. During use, the waste gas passes through the serpentine pipe, and the residual heat contained in it heats the water inside the water tank. The hot water enters the sludge drying box, making full use of the heat, and also avoiding the need to use an air-cooled quenching device to reduce the exhaust gas temperature, thereby wasting a lot of heat and electricity.

[0015] 2. The low-temperature belt sludge drying device based on the waste heat of the lime kiln has a uniform heat dissipation mechanism. During use, the fan plate swings back and forth to quickly disperse the input exhaust gas to all angles inside the sludge drying box, which heats up faster and improves work efficiency. The filter screen filters the exhaust gas, and the card block is connected to the inside of the rectangular block to prevent the filter screen from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the heat utilization mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the exploded structure of the exhaust assembly of the utility model;

[0021] Figure 5 It is a schematic diagram of the exploded structure of the uniform heat dissipation mechanism of the utility model.

[0022] In the figure: 1, sludge drying box; 2, support column; 3, U-shaped shield; 4, conveyor belt; 5, paving plate; 6, heat utilization mechanism; 61, heat exchange component; 611, water tank; 612, water inlet pipe; 613, water pump A; 614, water delivery pipe A; 615, diversion pipe; 616, water delivery pipe B; 617, water pump B; 618, return pipe; 619, collecting pipe; 6110, U-shaped cavity; 62, discharge Air assembly; 621, air pump; 622, air intake pipe; 623, air delivery pipe; 624, baffle; 625, serpentine pipe; 626, connecting pipe; 627, fixing block; 7, uniform heat dissipation mechanism; 71, rectangular block; 72, air inlet pipe; 73, filter screen; 74, spring; 75, block; 76, fan; 77, rotating shaft; 78, rotating block; 79, movable block; 710, protrusion; 711, fan plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Embodiment 1:

[0026] See also Figure 1-4 The utility model provides a technical solution: a low-temperature belt-type sludge drying device based on waste heat of a lime kiln, comprising a sludge drying box 1, support columns 2 are fixedly installed at the four corners of the bottom of the sludge drying box 1, a U-shaped shield 3 is fixedly installed on the left side of the sludge drying box 1, three conveyor belts 4 are arranged inside the sludge drying box 1, three paving plates 5 are fixedly installed inside the sludge drying box 1, a heat utilization mechanism 6 is arranged inside the sludge drying box 1, and a uniform heat dissipation mechanism 7 is arranged inside the sludge drying box 1.

[0027] The heat utilization mechanism 6 includes a heat exchange component 61 and an exhaust component 62 . The exhaust component 62 is disposed inside the heat exchange component 61 .

[0028] Furthermore, the heat exchange component 61 includes a water tank 611, which is fixedly installed on the top of the sludge drying box 1. A water inlet pipe 612 is fixedly installed on the top of the water tank 611. A water pump A613 is fixedly installed on the top of the water tank 611. A water supply pipe A614 is fixedly installed on the top of the water pump A613. A diversion pipe 615 is fixedly installed on the back of the sludge drying box 1. Six water supply pipes B616 are fixedly installed on the front of the diversion pipe 615. A water pump B617 is fixedly installed on the top of the water tank 611. A return pipe 618 is fixedly installed on the top of the water pump B617. A collecting pipe 619 is fixedly installed on the front of the sludge drying box 1. Six U-shaped cavities 6110 are opened inside the sludge drying box 1. Hot water enters the U-shaped cavity 6110 to heat the inside of the sludge drying box 1.

[0029] Furthermore, six water pipes B616 are fixedly installed on the back of the collecting pipe 619. The water pipe B616 is fixedly installed inside the sludge drying box 1, and the end of the water pipe B616 close to the U-shaped baffle 3 is communicated with the U-shaped cavity 6110, the end of the water pipe A614 away from the water pump A613 is fixedly installed with the diversion pipe 615, and the end of the return pipe 618 away from the water pump B617 is fixedly installed with the collecting pipe 619, so that the cooled water after use can enter the water tank 611 again for circulation and heat exchange.

[0030] Furthermore, the exhaust component 62 includes an air pump 621, which is fixedly installed on the top of the sludge drying box 1. An air intake pipe 622 is fixedly installed on the bottom of the air pump 621, an air supply pipe 623 is fixedly installed on the top of the air pump 621, a baffle 624 is fixedly installed inside the air supply pipe 623, a serpentine tube 625 is fixedly installed on the end of the air supply pipe 623 away from the air pump 621, a connecting pipe 626 is fixedly installed on the end of the serpentine tube 625 away from the air supply pipe 623, a fixing block 627 is fixedly installed inside the water tank 611, and the serpentine tube 625 is suspended and fixed, so as to achieve a better heat exchange effect.

[0031] Furthermore, the serpentine pipe 625 is arranged inside the fixed block 627, the air intake pipe 622 is fixedly installed inside the sludge drying box 1, and the serpentine pipe 625 is arranged inside the water tank 611 to heat the water inside the water tank 611.

[0032] Embodiment 2:

[0033] See also Figure 5, and combined with Example 1, it is further obtained that the uniform heat dissipation mechanism 7 includes a rectangular block 71, the rectangular block 71 is fixedly installed at the bottom of the sludge drying box 1, the bottom of the rectangular block 71 is fixedly installed with an air inlet pipe 72, the inside of the rectangular block 71 is slidably installed with a filter screen 73, the inside of the filter screen 73 is fixedly installed with two springs 74, and the end of the spring 74 away from the filter screen 73 is fixedly installed with a clamping block 75, and the inside of the rectangular block 71 is provided with a fan 76, and the output end of the fan 76 is fixedly installed with a rotating shaft 77, and the top of the rotating shaft 77 is fixedly installed with a rotating block 78, and the inside of the rotating block 78 is rotatably installed with a movable block 79, and the inside of the sludge drying box 1 is fixedly installed with two protrusions 710, and the inside of the protrusion 710 is rotatably installed with a fan plate 711, which quickly disperses the input exhaust gas to various angles inside the sludge drying box 1, heats up faster, and improves work efficiency.

[0034] Furthermore, the block 75 is slidably installed inside the filter 73, and corresponding positions of the rectangular block 71 and the block 75 are provided with slots, and the block 75 is engaged in the slots, and the movable block 79 is slidably installed inside the fan plate 711, so that the fan plate 711 swings back and forth.

[0035] In actual operation, when this device is used, the slitting machine cuts the sludge and drops it onto the conveyor belt 4 at the top, and the paving plate 5 performs secondary leveling on the material, and at the same time realizes secondary tumbling of the material to improve the drying efficiency, and the waste gas containing residual heat generated by the lime kiln is injected into the air inlet pipe 72, and the filter screen 73 filters the waste gas, and the fan 76 drives the waste gas into the sludge drying box 1 to dry the sludge at low temperature, and the output end of the fan 76 rotates, driving the rotating shaft 77 to rotate, so that the rotating block 78 rotates and drives the movable block 79 to slide inside the fan plate 711, so that the fan plate 711 swings back and forth, and the input waste gas is quickly dispersed to various angles inside the sludge drying box 1, and the temperature rises faster, which speeds up the work efficiency, and water is injected into the water tank 611 through the water inlet pipe 612. After use, the waste gas moves upward and enters the serpentine through the air pump 621 and the air delivery pipe 623 under the action of the suction pipe 622. Inside the tube 625, the waste gas passes through the serpentine tube 625, and the residual heat contained therein heats the water inside the water tank 611. The baffle 624 prevents the condensed water in the cooled waste gas from flowing back into the sludge drying box 1. The waste gas passing through the serpentine tube 625 is cooled and discharged through the connecting pipe 626 for subsequent use. The water pump A613 drives the heated water to enter the diversion pipe 615 through the water pipe A614, and enters the U-shaped cavity 6110 through six water pipes B616 to heat the inside of the sludge drying box 1. The water pump B617 drives the cooled water passing through the U-shaped cavity 6110 to enter the water tank 611 again, so that the residual heat in the waste gas is fully utilized and a large amount of heat and electric energy is avoided. The conveyor belt 4 drives the strip sludge to the right, and then falls to the middle conveyor belt 4 for transportation to the left, and then falls on the bottom conveyor belt 4 and moves to the right, and is finally discharged.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A low-temperature belt-type sludge drying device based on waste heat from a lime kiln, comprising a sludge drying box (1), characterized in that: Support columns (2) are fixedly installed at the four corners of the bottom of the sludge drying box (1), a U-shaped shield (3) is fixedly installed on the left side of the sludge drying box (1), three conveyor belts (4) are arranged inside the sludge drying box (1), three paving plates (5) are fixedly installed inside the sludge drying box (1), a heat utilization mechanism (6) is arranged inside the sludge drying box (1), and a uniform heat dissipation mechanism (7) is arranged inside the sludge drying box (1); The heat utilization mechanism (6) comprises a heat exchange component (61) and an exhaust component (62), wherein the exhaust component (62) is arranged inside the heat exchange component (61).

2. The low-temperature belt-type sludge drying device based on lime kiln waste heat according to claim 1 is characterized in that: The heat exchange component (61) comprises a water tank (611), the water tank (611) being fixedly mounted on the top of the sludge drying box (1), a water inlet pipe (612) being fixedly mounted on the top of the water tank (611), a water pump A (613) being fixedly mounted on the top of the water tank (611), a water delivery pipe A (614) being fixedly mounted on the top of the water pump A (613), a shunt pipe (615) being fixedly mounted on the back of the sludge drying box (1), six water delivery pipes B (616) being fixedly mounted on the front of the shunt pipe (615), a water pump B (617) being fixedly mounted on the top of the water tank (611), a return pipe (618) being fixedly mounted on the top of the water pump B (617), a collecting pipe (619) being fixedly mounted on the front of the sludge drying box (1), and six U-shaped cavities (6110) being provided inside the sludge drying box (1).

3. The low-temperature belt-type sludge drying device based on lime kiln waste heat according to claim 2 is characterized in that: Six water pipes B (616) are fixedly installed on the back of the collecting pipe (619). The water pipes B (616) are fixedly installed inside the sludge drying box (1), and the end of the water pipe B (616) close to the U-shaped baffle (3) is connected to the U-shaped cavity (6110), the end of the water pipe A (614) away from the water pump A (613) is fixedly installed with the diversion pipe (615), and the end of the return pipe (618) away from the water pump B (617) is fixedly installed with the collecting pipe (619).

4. The low-temperature belt-type sludge drying device based on lime kiln waste heat according to claim 2 is characterized in that: The exhaust assembly (62) includes an air pump (621), which is fixedly installed on the top of the sludge drying box (1); an air intake pipe (622) is fixedly installed on the bottom of the air pump (621); an air supply pipe (623) is fixedly installed on the top of the air pump (621); a baffle (624) is fixedly installed inside the air supply pipe (623); a serpentine pipe (625) is fixedly installed on one end of the air supply pipe (623) away from the air pump (621); a connecting pipe (626) is fixedly installed on one end of the serpentine pipe (625) away from the air supply pipe (623); and a fixing block (627) is fixedly installed inside the water tank (611).

5. The low-temperature belt-type sludge drying device based on lime kiln waste heat according to claim 4 is characterized in that: The serpentine pipe (625) is arranged inside the fixed block (627), the suction pipe (622) is fixedly installed inside the sludge drying box (1), and the serpentine pipe (625) is arranged inside the water tank (611).

6. The low-temperature belt-type sludge drying device based on lime kiln waste heat according to claim 1 is characterized in that: The uniform heat dissipation mechanism (7) comprises a rectangular block (71), the rectangular block (71) is fixedly mounted on the bottom of the sludge drying box (1), an air inlet pipe (72) is fixedly mounted on the bottom of the rectangular block (71), a filter screen (73) is slidably mounted inside the rectangular block (71), two springs (74) are fixedly mounted inside the filter screen (73), a clamping block (75) is fixedly mounted on one end of the spring (74) away from the filter screen (73), a fan (76) is arranged inside the rectangular block (71), a rotating shaft (77) is fixedly mounted on the output end of the fan (76), a rotating block (78) is fixedly mounted on the top of the rotating shaft (77), a movable block (79) is rotatably mounted inside the rotating block (78), two protrusions (710) are fixedly mounted inside the sludge drying box (1), and a fan plate (711) is rotatably mounted inside the protrusion (710).

7. The low-temperature belt-type sludge drying device based on lime kiln waste heat according to claim 6 is characterized in that: The clamping block (75) is slidably mounted inside the filter screen (73); corresponding positions of the rectangular block (71) and the clamping block (75) are provided with clamping grooves, and the clamping block (75) is clamped inside the clamping grooves; and the movable block (79) is slidably mounted inside the fan plate (711).

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