Preheating device of sludge incinerator

Abstract

The utility model discloses a preheating device of a sludge incinerator, which comprises a first preheating bin, two scattering rollers capable of rotating in opposite directions are arranged in the first preheating bin, the first preheating bin comprises a feeding cavity and a first preheating cavity, the feeding cavity is positioned right above the two scattering rollers, the feeding cavity and the first preheating cavity are separated by the scattering rollers, and the first preheating cavity is positioned right above the scattering rollers. A hot air pipe is arranged on the inner wall of the first preheating cavity, a plurality of nozzles communicated with the interior of the hot air pipe are arranged on the side face of the hot air pipe, a plurality of second convex teeth arranged in the length direction of the scattering rollers are arranged on the side walls of the scattering rollers, a second groove is formed between every two adjacent second convex teeth, and the second convex teeth of one scattering roller can be embedded into the second groove of the other scattering roller; and a rectangular wave-shaped gap is formed. The two scattering rollers are arranged in the first preheating bin, dry sludge can be scattered and then fed into the first preheating cavity, the dry sludge in the first preheating cavity is preheated through the hot air pipe, and the preheating effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to a incinerator more particularly, relate to a kind of preheating device of sludge incinerator. BACKGROUND

[0002] Sludge incineration power generation technology is a way of sludge treatment, it uses incinerator to burn dewatered sludge to generate electricity, and the high-temperature flue gas generated by incineration is used for heating.

[0003] In order to improve the efficiency of sludge incineration, a small part of the high-temperature flue gas is currently introduced into the preheating device, and the dry sludge inside the preheating device is preheated, and then the preheated dry sludge is conveyed into the incinerator for combustion. The current preheating device has deficiencies, and the block-shaped dry sludge is not scattered before entering the preheating device. The preheating effect of the sludge wrapped inside is poor, and even it cannot be preheated, so it is urgently needed to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the deficiencies of the prior art, and provides a preheating device for sludge incinerator, which can send the dry sludge into the first preheating cavity after scattering by setting two scattering rollers in the first preheating bin, and preheat the dry sludge in the first preheating cavity by the hot air pipe, so the preheating effect is good.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a preheating device for sludge incinerator, comprising a first preheating bin, two scattering rollers capable of rotating in opposite directions are arranged in the first preheating bin, the first preheating bin comprises a feeding cavity and a first preheating cavity, the feeding cavity is located directly above the two scattering rollers, the feeding cavity and the first preheating cavity are divided by the scattering rollers, a hot air pipe is arranged on the inner wall of the first preheating cavity, a plurality of nozzles communicating with the inside of the hot air pipe are arranged on the side surface of the hot air pipe, a plurality of second protrusions are arranged on the side wall of the scattering roller along the length direction, a second groove is arranged between two adjacent second protrusions, and the second protrusions of one scattering roller can be embedded in the second groove of the other scattering roller to form a rectangular wave gap.

[0006] Further, baffles are arranged on both sides of the feeding cavity, two baffles are respectively located above the two scattering rollers, the baffle comprises a first protrusion and a first groove corresponding to the scattering roller, the first protrusion and the second groove are gap matched, and the first groove and the second protrusion are gap matched.

[0007] Further, a stirring paddle is arranged in the first preheating cavity and arranged in the same direction as the scattering roller, and the stirring paddle is located below the scattering roller and opposite to the feeding cavity.

[0008] Further, the first preheating bin is connected with a second preheating bin at the lower part, the second preheating bin comprises a second preheating cavity and a discharge port, the first preheating cavity, the second preheating cavity and the discharge port are communicated, and the discharge port is located at the side of the second preheating cavity and away from the first preheating cavity.

[0009] Further, the first preheating bin is connected with a second preheating bin at the lower part, the second preheating bin comprises a second preheating cavity and a discharge port, the first preheating cavity, the second preheating cavity and the discharge port are communicated, and the discharge port is located at the side of the second preheating cavity and away from the first preheating cavity.

[0010] Further, the first preheating bin is connected with a second preheating bin at the lower part, the second preheating bin comprises a second preheating cavity and a discharge port, the first preheating cavity, the second preheating cavity and the discharge port are communicated, and the discharge port is located at the side of the second preheating cavity and away from the first preheating cavity.

[0011] Further, the first preheating bin is connected with a second preheating bin at the lower part, the second preheating bin comprises a second preheating cavity and a discharge port, the first preheating cavity, the second preheating cavity and the discharge port are communicated, and the discharge port is located at the side of the second preheating cavity and away from the first preheating cavity.

[0012] Further, the first preheating bin is connected with a second preheating bin at the lower part, the second preheating bin comprises a second preheating cavity and a discharge port, the first preheating cavity, the second preheating cavity and the discharge port are communicated, and the discharge port is located at the side of the second preheating cavity and away from the first preheating cavity.

[0013] Further, the first preheating bin is connected with a second preheating bin at the lower part, the second preheating bin comprises a second preheating cavity and a discharge port, the first preheating cavity, the second preheating cavity and the discharge port are communicated, and the discharge port is located at the side of the second preheating cavity and away from the first preheating cavity.

[0014] Therefore, the present application has the following beneficial effects:

[0015] The first preheating bin is connected with a second preheating bin at the lower part, the second preheating bin comprises a second preheating cavity and a discharge port, the first preheating cavity, the second preheating cavity and the discharge port are communicated, and the discharge port is located at the side of the second preheating cavity and away from the first preheating cavity. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The structure of the present embodiment is shown in the figure;

[0017] Fig. 2 The structure of the present embodiment is shown in the figure;

[0018] Fig. 3 This is a partial cross-sectional view of the dispersing roller and the baffle.

[0019] Reference numerals: 1. First preheating chamber; 11. Baffle; 12. Feeding chamber; 13. First preheating chamber; 14. Connecting platform; 15. Connecting rib; 16. Discharge port; 17. First protruding tooth; 18. First groove; 2. Dispersing roller; 21. Second protruding tooth; 22. Second groove; 3. Stirring paddle; 4. Second preheating chamber; 41. Second preheating chamber; 42. Discharge port; 43. Spacer; 44. Cavity; 45. Air inlet pipe; 46. Air outlet pipe; 5. Spiral feeding roller; 6. Drive mechanism; 61. Driver; 62. Drive wheel; 63. Driven wheel; 64. Connecting belt; 7. Feeding pipe; 8. Discharge pipe; 9. Hot air pipe; 91. Nozzle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figs. 1-3 As shown, this embodiment discloses a preheating device for a sludge incinerator, including a first preheating chamber 1. The first preheating chamber 1 is equipped with two dispersing rollers 2 that can rotate in opposite directions, as shown in the diagram. Fig. 1 As shown, the first preheating chamber 1 includes a feeding chamber 12 and a first preheating chamber 13. The feeding chamber 12 is located directly above the two dispersing rollers 2. The feeding chamber 12 and the first preheating chamber 13 are separated by the dispersing rollers 2. The sidewall of the dispersing roller 2 is provided with a plurality of second protrusions 21 arranged along its length direction. A second groove 22 is provided between two adjacent second protrusions 21. The second protrusions 21 of one dispersing roller 2 can be embedded in the second groove 22 of another dispersing roller 2 to form as shown in the figure. Fig. 2 The gaps in the rectangular wave shown.

[0022] Two dispersing rollers 2 are driven by a motor (not shown in the figure). The driving structure of the two dispersing rollers 2 is existing technology. The inner wall of the first preheating chamber 13 is provided with a hot air pipe 9. The side of the hot air pipe 9 is provided with a plurality of nozzles 91 that communicate with the inside of the hot air pipe 9. The first preheating chamber 13 is connected to the high-temperature flue gas generated by the incinerator. That is, the high-temperature flue gas can be transported to the hot air pipe 9 through a pipe (not shown in the figure) and sprayed out from the nozzles 91. The connection structure between the hot air pipe 9 and the incinerator flue is existing technology, so it will not be described in detail in this specification.

[0023] The first preheating bin 1 is fixed with a feeding pipe 7 on the upper portion, the feeding pipe 7 is communicated with a feeding cavity 12, the other end of the feeding pipe 7 is connected with a dry sludge conveying device (not shown in the figure), through the external conveying device, the block-shaped dry sludge is continuously conveyed from the feeding pipe 7 to the feeding cavity 12, when the block-shaped dry sludge falls into the feeding cavity 12, through the rotation of the two scattering rollers 2, the large sludge is scattered into small block-shaped structure or loose structure, and falls into the first preheating cavity 13 from the gap of the rectangular wave, the high-temperature flue gas conveyed through the hot air pipe 9 heats the first preheating cavity 13, so that the dry sludge in the first preheating cavity 13 is preheated, since the block-shaped dry sludge is scattered by the scattering roller 2, the preheating effect of the dry sludge can be effectively improved.

[0024] The first preheating cavity 13 is provided with a stirring paddle 3 arranged in the same direction as the scattering roller 2, the stirring paddle 3 is driven to rotate by a motor (not shown in the figure), and the connection structure of the stirring paddle 3 and the motor is a prior art, the stirring paddle 3 is located below the scattering roller 2 and opposite to the feeding cavity 12, in order to ensure that the dry sludge can smoothly enter the first preheating cavity 13, therefore the size of the gap of the rectangular wave is relatively large, when the dry sludge passes through the gap, there is still a part of small block-shaped dry sludge, therefore through the high-speed rotation of the stirring paddle 3, the dry sludge passing through the scattering roller 2 can be further scattered, so that the dispersion effect of the dry sludge is improved, and the preheating effect is further improved.

[0025] The feeding cavity 12 is provided with a baffle 11 on both sides, the two baffles 11 are located above the two scattering rollers 2 respectively, the baffle 11 includes a first protrusion 17 and a first recess 18 corresponding to the scattering roller 2, the first protrusion 17 is gap-fitted with the second recess 22, and the first recess 18 is gap-fitted with the second protrusion 21, the gap is small, through the setting of the baffle 11, not only the dry sludge in the feeding cavity 12 can be avoided to directly fall into the first preheating cavity 13 from the gap between the scattering roller 2 and the first preheating bin 1, but also through the baffle 11, the residual dry sludge in the second recess 22 can be cleaned, and the conveying effect of the dry sludge is effectively improved.

[0026] The first preheating bin 1 is connected with a second preheating bin 4 at the lower part, the first preheating bin 1 and the second preheating bin 4 are connected through bolts, the second preheating bin 4 is in a cylindrical structure and is vertically arranged, the second preheating bin 4 comprises a second preheating cavity 41 and a discharge port 42, the first preheating cavity 13, the second preheating cavity 41 and the discharge port 42 are communicated, the discharge port 42 is located at the side of the second preheating cavity 41 and is away from the first preheating cavity 13, a discharge pipe 8 is fixed at the side of the second preheating bin 4, the discharge pipe 8 is communicated with the discharge port 42, a cavity 44 is arranged in the second preheating cavity 41, the cavity 44 is isolated from the second preheating cavity 41 through a spacer 43, an air inlet pipe 45 and an air outlet pipe 46 are respectively arranged at the side of the cavity 44, the air outlet pipe 46 is away from the air inlet pipe 45 and the position of the air outlet pipe 46 is lower than that of the air inlet pipe 45.

[0027] The air inlet pipe 45 is communicated with high-temperature flue gas generated by the incinerator, the air outlet pipe 46 is connected with a flue of the incinerator (not shown in the figure), that is, the high-temperature flue gas can be transported into the cavity 44 from the air inlet pipe 45 through a pipeline (not shown in the figure) and finally reenters the flue of the incinerator from the air outlet pipe 46.

[0028] The sludge in the first preheating cavity 13 falls into the second preheating cavity 41, is preheated again in the second preheating cavity 41 and then falls into the discharge pipe 8 from the discharge port 42, the sludge preheated twice in the discharge pipe 8 finally enters the incinerator for combustion, the high-temperature flue gas entering the first preheating cavity 13 enters the discharge pipe 8 together with the sludge and finally reenters the incinerator, the second preheating bin 4 can realize the secondary preheating of the sludge and is beneficial to improve the preheating effect of the sludge.

[0029] A connecting table 14 is arranged at the lower part of the first preheating bin 1, the connecting table 14 is connected with the inner wall of the first preheating bin 1 through a plurality of connecting ribs 15, a discharge port 16 is arranged between adjacent two connecting ribs 15, the first preheating cavity 13 and the second preheating cavity 41 are communicated through the discharge port 16, a spiral feeding roller 5 is arranged in the second preheating cavity 41, the upper end of the spiral feeding roller 5 is connected with the connecting table 14 and the lower end is connected with a driving mechanism 6, the driving mechanism 6 can drive the spiral feeding roller 5 to rotate, the driving mechanism 6 comprises a driver 61 fixed at the outside of the second preheating bin 4, a driving wheel 62 connected with the driver 61 and a driven wheel 63 connected with the spiral feeding roller 5, the driving wheel 62 and the driven wheel 63 are connected through a connecting belt 64, the driving mechanism 6 is a conventional mechanism for driving the spiral feeding roller 5 to rotate, the driver 61 is a speed reducer, the spiral feeding roller 5 can not only realize the conveying and feeding of the sludge in the second preheating cavity 41 but also reduce the speed of the sludge passing through the second preheating cavity 41, which is beneficial to the sufficient preheating of the sludge.

[0030] The above merely is preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above examples, and belongs to the technical scheme under the idea of the present application all belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A preheating device of a sludge incinerator, characterized by comprising: The utility model relates to a first preheating bin (1) is provided with two can rotate to opposite direction's scatter roller (2) in, first preheating bin (1) includes feed chamber (12) and first preheating chamber (13), feed chamber (12) is located two scatter roller (2) upside, feed chamber (12) is divided with first preheating chamber (13) through scatter roller (2), first preheating chamber (13) inner wall is equipped with hot -blast pipe (9), hot -blast pipe (9) side is equipped with multiple with hot -blast pipe (9) inside communication's shower nozzle (91), scatter roller (2) side wall is equipped with multiple second tooth (21) along its length direction is equipped with second groove (22) between two adjacent second tooth (21), one scatter roller (2) second tooth (21) can embed in another scatter roller (2) second groove (22) to form rectangular wave's interstice.

2. A preheating device for a sludge incinerator according to claim 1, characterized in that Feed chamber (12) both sides are equipped with baffle (11), two baffle (11) are located two scatter roller (2) upside respectively, baffle (11) includes with scatter roller (2) corresponding first tooth (17) and first groove (18), first tooth (17) and second groove (22) gap cooperation, first groove (18) and second tooth (21) gap cooperation.

3. A preheating device for a sludge incinerator according to claim 1, characterized in that First preheating chamber (13) is equipped with with scatter roller (2) same direction setting's stirring paddle (3), stirring paddle (3) is located scatter roller (2) below and is opposite feed chamber (12).

4. A preheating device for a sludge incinerator according to claim 1, characterized in that First preheating bin (1) lower part is connected with second preheating bin (4), second preheating bin (4) includes second preheating chamber (41) and discharge gate (42), first preheating chamber (13), second preheating chamber (41) and discharge gate (42) are communicated, and discharge gate (42) is located second preheating chamber (41) side and is away from first preheating chamber (13).

5. A preheating device for a sludge incinerator according to claim 4, characterized in that First preheating bin (1) lower part is equipped with connecting table (14), second preheating chamber (41) is installed with spiral feeding roller (5), and the upper end of spiral feeding roller (5) is connected with connecting table (14), and the lower end is connected with driving mechanism (6), and driving mechanism (6) can drive spiral feeding roller (5) to rotate.

6. A preheating device for a sludge incinerator according to claim 5, characterized in that Connecting table (14) and first preheating bin (1) inner wall are connected through a plurality of connecting ribs (15), and a discharge port (16) is arranged between adjacent two connecting ribs (15), and first preheating chamber (13) and second preheating chamber (41) are communicated through the discharge port (16).

7. A preheating device for a sludge incinerator according to claim 5, wherein Driving mechanism (6) includes the driver (61) fixed in second preheating bin (4) outside, the driving wheel (62) connected with driver (61) and the driven wheel (63) connected with spiral feeding roller (5), and the driving wheel (62) and the driven wheel (63) are connected through the connecting belt (64).

8. A preheating device for a sludge incinerator according to claim 4, characterized in that The second preheating cavity (41) is internally provided with a cavity (44), the cavity (44) is isolated from the second preheating cavity (41) through a spacer (43), the cavity (44) is respectively provided with an air inlet pipe (45) and an air outlet pipe (46) on the side, the air outlet pipe (46) is away from the air inlet pipe (45), and the air outlet pipe (46) is lower than the air inlet pipe (45).

9. A preheating device for a sludge incinerator according to claim 4, characterized in that The first preheating bin (1) is fixed with a feeding pipe (7) on the upper portion, the feeding pipe (7) is communicated with a feeding cavity (12), and the second preheating bin (4) is fixed with a discharging pipe (8) on the side, the discharging pipe (8) is communicated with a discharging port (42).

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