A direct contact heat exchange sludge combustion furnace

Abstract

The present invention discloses a direct contact heat exchange type sludge combustion furnace, which specifically relates to the field of sludge treatment technology, including a furnace body, a feed pipe connected to one side of the top surface of the furnace body, a motor fixedly provided on one side of the feed pipe, an output end of the motor bottom penetrating the top of the furnace body and extending into the interior of the furnace body, a transmission shaft fixedly provided at the bottom of the motor output end, and a plurality of stirring blades symmetrically fixedly provided on both sides of the transmission shaft. The present invention performs coarse stirring of the sludge by the stirring blades, a first stirring rod on the grinding disc, and a second stirring rod on the filter screen plate, so that the sludge is fully stirred, mixed evenly, and internal agglomeration is avoided. The fully stirred sludge falls from the filter screen plate onto the sieve plate, and the sieve plate performs eccentric motion through an L-shaped rod connected to the motor. The eccentric transmission device drives the fallen sludge to swing back and forth, so that the sludge falls onto the grate evenly and not in a clumping state, so that the sludge in the furnace body is fully and completely incinerated.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and more particularly to a direct contact heat exchange type sludge combustion furnace. Background Art

[0002] In recent years, driven by national energy conservation and emission reduction initiatives and proactive fiscal policies, urban wastewater treatment has rapidly developed, achieving remarkable results in urban water environment management. However, the large amounts of sludge generated during urban wastewater treatment have not been effectively treated and disposed of. This sludge contains toxic and hazardous substances such as pathogens, heavy metals, and persistent organic matter. Without effective treatment and disposal, it can easily cause secondary pollution to groundwater and soil, directly threatening environmental safety and public health. This significantly reduces the environmental benefits of wastewater treatment facilities and undermines the positive impact of the national energy conservation and emission reduction strategy.

[0003] However, sludge treatment technology still has many shortcomings in actual application. For example, most of the sludge falls into the furnace in agglomerates, and the sludge to be incinerated cannot be evenly dispersed in the furnace, so the sludge in the furnace cannot be fully and completely incinerated, which greatly limits the efficiency of sludge incineration. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a direct contact heat exchange sludge combustion furnace, which performs coarse stirring of the sludge through the stirring blades and the first stirring rod on the grinding disc and the second stirring rod on the filter screen, so that the sludge is fully stirred, mixed evenly and internal caking is avoided. The sludge after being fully stirred falls from the filter screen onto the sieve plate, and the sieve plate performs eccentric motion through the L-shaped rod connected to the motor. The eccentric transmission device drives the fallen sludge to swing back and forth, so that the sludge falls on the grate evenly and not in clumps, so that the sludge in the furnace body is fully and completely incinerated, and the efficiency of sludge incineration is greatly improved.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a direct contact heat exchange type sludge combustion furnace, comprising a furnace body, a feed pipe is connected to one side of the top surface of the furnace body, a motor is fixedly provided on one side of the feed pipe, the bottom output end of the motor passes through the top of the furnace body and extends to the inside of the furnace body, a transmission shaft is fixedly provided at the bottom of the motor output end, a plurality of stirring blades are symmetrically fixedly provided on both sides of the transmission shaft, a grinding disc is provided at the bottom of the stirring blade, the grinding disc is fixedly sleeved on the outer wall of the transmission shaft, a plurality of first stirring rods are fixedly provided at the bottom of the grinding disc, a filter screen is provided at the bottom of the first stirring rod, the filter screen is fixedly connected to the inner wall of the furnace body, a plurality of second stirring rods are fixedly provided on the top of the filter screen, the filter screen A brush plate is provided at the bottom, and the brush plates are fixedly arranged on both sides of the transmission shaft. The bottom end of the transmission shaft passes through the filter mesh plate and is connected to the filter mesh plate through a ball bearing. A guide plate is provided on the outside of the brush plate, and the guide plate is fixedly connected to the filter mesh plate. An outlet is provided at the bottom of the guide plate, and an L-shaped rod is provided inside the outlet. The top of the L-shaped rod is fixedly connected to the transmission shaft, and a sieve plate is fixedly provided at the bottom of the L-shaped rod. A plurality of through holes are evenly provided at the bottom of the sieve plate, and a partition is provided at the bottom of the sieve plate, and the partition is fixedly connected to the inner wall of the furnace body. An opening is penetrated on the partition, and a grate is fixedly provided at the bottom of the furnace body cavity, a discharge pipe is fixedly provided on one side of the bottom of the furnace body, and a heat exchange component is fixedly provided on the outer wall of one side of the furnace body.

[0006] In a preferred embodiment, the heat exchange assembly includes a box body, a spiral tube, an air outlet pipe and an air inlet pipe. The spiral tube is arranged in the box body, one end of the spiral tube passes through the box body and is connected to the furnace body, and the other end of the spiral tube passes through the box body and extends to the outside of the box body. The top of the box body is fixedly connected to the air outlet pipe, and the bottom of the box body is fixedly connected to the air inlet pipe.

[0007] In a preferred embodiment, one end of the top of the gas outlet pipe passes through the furnace body and is connected to the furnace cavity, and an air pump is fixedly provided on the outside of the gas outlet pipe.

[0008] In a preferred embodiment, the cross section of the grinding disc is configured to be an inverted funnel shape.

[0009] In a preferred embodiment, the first stirring rod and the second stirring rod are arranged alternately.

[0010] In a preferred embodiment, the top opening of the sieve tray and the bottom outlet of the guide plate correspond to the filter screen plate.

[0011] In a preferred embodiment, support bases are fixedly provided at the four corners of the bottom of the furnace body.

[0012] In a preferred embodiment, the cross section of the guide plate is set to be U-shaped.

[0013] Technical effects and advantages of the present invention:

[0014] 1. The present invention uses the stirring blades and the first stirring rod on the grinding disc and the second stirring rod on the filter screen to perform rough stirring on the sludge, so that the sludge is fully stirred and mixed evenly to prevent internal lumps. The fully stirred sludge falls from the filter screen onto the sieve plate. The sieve plate is eccentrically moved by the L-shaped rod connected to the motor. The eccentric transmission device drives the fallen sludge to swing back and forth, so that the sludge falls onto the grate evenly and does not clump. The sludge in the furnace body is fully and completely incinerated, and the sludge incineration efficiency is greatly improved. The sludge will no longer clump and be incompletely incinerated.

[0015] 2. In the present invention, the brush plate at the bottom of the filter screen also rotates with the transmission shaft. When the sludge passes through the filter screen, the brush plate at the bottom of the filter screen also cleans the mesh holes to avoid clogging and affecting the transportation of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the overall structure of the present invention.

[0017] Figure 2 For the present invention Figure 1 Enlarged view of part A.

[0018] Figure 3 It is a top view of the guide plate of the present invention.

[0019] Figure 4 It is a bottom view of the grinding disc and the first stirring rod of the present invention.

[0020] The accompanying drawings are marked as follows: 1 furnace body, 2 feed pipe, 3 motor, 4 transmission shaft, 5 stirring blade, 6 grinding disc, 7 first stirring rod, 8 filter screen, 9 second stirring rod, 10 brush plate, 11 drainage plate, 12 L-shaped rod, 13 sieve plate, 14 through hole, 15 partition, 16 opening, 17 grate, 18 discharge pipe, 19 box body, 20 spiral tube, 21 outlet pipe, 22 inlet pipe, 23 air pump, 24 support base, 25 outlet. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] according to Figure 1-4The direct contact heat exchange sludge combustion furnace shown includes a furnace body 1, and a feed pipe 2 is connected to one side of the top surface of the furnace body 1. A motor 3 is fixed on one side of the feed pipe 2. The bottom output end of the motor 3 passes through the top of the furnace body 1 and extends into the interior of the furnace body 1. A transmission shaft 4 is fixed to the bottom of the output end of the motor 3. A plurality of stirring blades 5 are symmetrically fixed on both sides of the transmission shaft 4. A grinding disc 6 is provided at the bottom of the stirring blade 5. The grinding disc 6 is fixedly sleeved on the outer wall of the transmission shaft 4. A plurality of first stirring rods 7 are fixed at the bottom of the grinding disc 6. A filter screen 8 is provided at the bottom of the first stirring rod 7. The filter screen 8 is fixedly connected to the inner wall of the furnace body 1. A plurality of second stirring rods 9 are fixed on the top of the filter screen 8. A brush plate 10 is provided at the bottom of the filter screen 8. The brush plate 10 is fixedly arranged on both sides of the transmission shaft 4. The bottom end of the transmission shaft 4 passes through the filter screen 8 and is connected to the filter screen 8 through a ball bearing. The brush plate 10 is connected to the outside of the brush plate 10 with a guide plate 11, and the guide plate 11 is fixedly connected to the filter plate 8. An outlet 25 is provided at the bottom of the guide plate 11, and an L-shaped rod 12 is provided inside the outlet 25. The top of the L-shaped rod 12 is fixedly connected to the drive shaft 4, and a sieve plate 13 is fixedly provided at the bottom of the L-shaped rod 12. A plurality of through holes 14 are evenly provided at the bottom of the sieve plate 13, and a partition 15 is provided at the bottom of the sieve plate 13. The partition 15 is fixedly connected to the inner wall of the furnace body 1, and an opening 16 is opened through the partition 15. A grate 17 is fixedly provided at the bottom of the inner cavity of the furnace body 1, and a discharge pipe 18 is fixedly provided on one side of the bottom of the furnace body 1. A heat exchange component is fixedly provided on the outer wall of one side of the furnace body 1.

[0023] Furthermore, the heat exchange assembly includes a box body 19, a spiral tube 20, an air outlet pipe 21 and an air inlet pipe 22. The spiral tube 20 is arranged in the box body 19. One end of the spiral tube 20 passes through the box body 19 and is connected to the furnace body 1. The other end of the spiral tube 20 passes through the box body 19 and extends to the outside of the box body 19. The top of the box body 19 is fixedly connected to the air outlet pipe 21, and the bottom of the box body 19 is fixedly connected to the air inlet pipe 22, so as to convert the high-temperature gas generated in the furnace body 1 and then directly act on the sludge to perform preliminary heating and drying on the sludge.

[0024] Furthermore, one end of the top of the gas outlet pipe 21 passes through the furnace body 1 and is connected to the furnace cavity. An air pump 23 is fixedly provided on the outside of the gas outlet pipe 21 to draw in external air to assist combustion of the high-temperature gas in the furnace body 1.

[0025] Furthermore, the cross section of the grinding disc 6 is configured to be in the shape of an inverted funnel, so that the sludge moves with the tilt angle;

[0026] Furthermore, the first stirring rod 7 and the second stirring rod 9 are staggered to break up the sludge and prevent it from agglomerating and affecting the subsequent sludge incineration;

[0027] Furthermore, the top opening 16 of the sieve plate 13 and the bottom outlet 25 of the guide plate 11 correspond to the filter screen plate 8, facilitating the circulation of the sludge;

[0028] Furthermore, support bases 24 are fixedly provided at the four corners of the bottom of the furnace body 1 to enhance the stability of the furnace body 1;

[0029] Furthermore, the cross section of the guide plate 11 is set to be U-shaped, so that the sludge can be discharged according to its angle.

[0030] Working principle of the present invention:

[0031] Refer to the instruction manual Figure 1-4 When the present invention is in use, the staff pours sludge into the feed pipe 2 and starts the machine. The grate 17 in the furnace body 1 starts to ignite and heat, and the high-temperature gas generated by it is discharged into the box body 19 through the spiral tube 20. The cold air in the box body 19 is sucked into by the air pump 23 and heated by the high-temperature gas in the spiral tube 20, and flows into the furnace body 1 from the outlet pipe 21. The high-temperature gas after heating is used to directly heat the poured sludge, dry it and facilitate subsequent incineration. The motor 3 also drives the stirring blade 5, the grinding disc 6 and the first stirring rod 7 on the grinding disc 6 to rotate through the transmission shaft 4. While rotating, they contact and stir the fed sludge. The stirring blade 5 first stirs the sludge roughly, and then the first stirring rod 7 on the grinding disc 6 and the first stirring rod 7 on the filter plate 8 stir the sludge. The two stirring rods 9 perform deep processing and stirring on the sludge, so that the sludge is fully stirred, mixed evenly and internal caking is avoided, which affects the subsequent incineration. The fully stirred sludge falls from the filter plate 8 to the sieve plate 13. At the same time, the brush plate 10 at the bottom of the filter plate 8 also rotates with the transmission shaft 4 to clean the mesh at the bottom of the filter plate 8 to avoid clogging and affecting the transportation of the sludge. The fallen sludge is eccentrically moved by the L-shaped rod 12 connected to the motor 3 with the help of the sieve plate 13. The eccentric transmission device drives the fallen sludge to swing back and forth, so that the sludge falls on the grate 17 evenly and not in a clumping shape, so that the sludge in the furnace body 1 is fully and completely incinerated, and the efficiency of sludge incineration is greatly improved. It will no longer form a clumping shape and be incompletely incinerated.

[0032] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0033] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0034] Finally: 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, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A direct contact heat exchange type sludge combustion furnace, comprising a furnace body (1), characterized in that: A feed pipe (2) is connected to one side of the top surface of the furnace body (1), and a motor (3) is fixedly provided on one side of the feed pipe (2). The bottom output end of the motor (3) passes through the top of the furnace body (1) and extends into the interior of the furnace body (1). A transmission shaft (4) is fixedly provided at the bottom of the output end of the motor (3). A plurality of stirring blades (5) are symmetrically fixed on both sides of the transmission shaft (4). A grinding disc (6) is provided at the bottom of the stirring blade (5). The grinding disc (6) is fixedly sleeved on the outer wall of the transmission shaft (4). A plurality of first stirring rods (7) are fixedly provided at the bottom of the grinding disc (6). A filter screen (8) is fixedly connected to the inner wall of the furnace body (1). A plurality of second stirring rods (9) are fixedly provided on the top of the filter screen (8). A brush plate (10) is provided at the bottom of the filter screen (8). The brush plate (10) is fixedly provided on both sides of the transmission shaft (4). The transmission shaft (4) The bottom end passes through the filter screen plate (8) and is connected to the filter screen plate (8) through a ball bearing, the brush plate (10) is provided with a guide plate (11) on the outside, the guide plate (11) is fixedly connected to the filter screen plate (8), an outlet (25) is provided at the bottom of the guide plate (11), an L-shaped rod (12) is provided inside the outlet (25), the top of the L-shaped rod (12) is fixedly connected to the transmission shaft (4), a sieve plate (13) is fixedly provided at the bottom of the L-shaped rod (12), a plurality of through holes (14) are evenly provided at the bottom of the sieve plate (13), a partition (15) is provided at the bottom of the sieve plate (13), the partition (15) is fixedly connected to the inner wall of the furnace body (1), an opening (16) is provided through the partition (15), a grate (17) is fixedly provided at the bottom of the inner cavity of the furnace body (1), a discharge pipe (18) is fixedly provided on one side of the bottom of the furnace body (1), and a heat exchange component is fixedly provided on the outer wall of one side of the furnace body (1); The cross section of the grinding disc (6) is configured to be in the shape of an inverted funnel; The first stirring rod (7) and the second stirring rod (9) are arranged alternately; The top opening (16) of the sieve plate (13) and the bottom outlet (25) of the guide plate (11) correspond to the filter screen plate (8); The guide plate (11) has a U-shaped cross section.

2. The direct contact heat exchange type sludge combustion furnace according to claim 1, characterized in that: The heat exchange assembly comprises a box body (19), a spiral tube (20), an air outlet pipe (21) and an air inlet pipe (22), wherein the spiral tube (20) is arranged in the box body (19), one end of the spiral tube (20) passes through the box body (19) and is connected to the furnace body (1), and the other end of the spiral tube (20) passes through the box body (19) and extends to the outside of the box body (19), the top of the box body (19) is fixedly connected to the air outlet pipe (21), and the bottom of the box body (19) is fixedly connected to the air inlet pipe (22).

3. The direct contact heat exchange type sludge combustion furnace according to claim 2, characterized in that: One end of the top of the air outlet pipe (21) passes through the furnace body (1) and is connected to the furnace cavity. An air pump (23) is fixedly provided on the outside of the air outlet pipe (21).

4. The direct contact heat exchange type sludge combustion furnace according to claim 1, characterized in that: Support seats (24) are fixedly provided at the four corners of the bottom of the furnace body (1).

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