A combined multi-stage sludge treatment equipment

Abstract

The present invention discloses a combined multi-stage sludge treatment equipment, which relates to the technical field of combustion furnaces, including an incinerator body, one side of the interior of the incinerator body is slidably connected with an electric push plate, the incinerator body is rotatably connected with an electric rotating plate symmetrically distributed along the incinerator, the electric rotating plate is located below the electric push plate, and a barrel is spliced ​​on one side of the incinerator body close to the electric push plate. The present invention realizes orderly multi-stage temperature increase treatment through primary preheating, secondary heating, and tertiary combustion, gradually increases the temperature of the sludge, ensures that the sludge can be fully treated, and in the preheating stage, the hot flue gas flows not only in the upper cavity, but also in the lower cavity, ensuring that the upper and lower sides of the sludge can be fully preheated, and the hot flue gas in the exhaust pipe is automatically cyclically switched between the upper cavity and the lower cavity through mechanisms such as turbines, rotating rods, and slide plates, so that the sludge in the feed pipe is preheated more evenly.

Description

Technical Field

[0001] The invention relates to the technical field of combustion furnaces, and in particular to a combined multi-stage sludge treatment device. Background Art

[0002] Sludge treatment equipment mainly includes pretreatment, incineration and pyrolysis gasification and other treatment methods. Among them, incineration is one of the most common treatment methods, which converts organic matter in sludge into ash, harmless gas and heat through high-temperature combustion. This process not only reduces the volume of sludge, but also sterilizes and disinfects, achieving harmless and reduced sludge treatment.

[0003] The feed pipe of the existing sludge treatment incinerator is generally tilted for feeding. In order to make full use of the waste heat of the hot flue gas, the outlet of the hot flue gas is generally connected to the upper side of the feed pipe to preheat the sludge in the feed pipe. During the preheating stage, due to the natural upward tendency of the hot flue gas, the hot flue gas preferentially transfers the waste heat to the upper side of the sludge in the feed pipe, while the lower side of the sludge is difficult to be preheated. Uneven preheating will lead to inconsistent temperature of the sludge when it enters the subsequent heating stage, affecting the heating efficiency and treatment effect.

[0004] Based on the above situation, the present invention proposes a combined multi-stage sludge treatment equipment. Summary of the invention

[0005] In order to overcome the shortcoming that inclined feeding is prone to uneven preheating, the technical problem of the present invention is to provide a combined multi-stage sludge treatment equipment.

[0006] A combined multi-stage sludge treatment equipment comprises an incinerator body, one side of the incinerator body is slidably connected with an electric push plate, and the incinerator body is rotatably connected with an electric rotating plate symmetrically distributed along the incinerator, the electric rotating plate is located below the electric pushing plate, a barrel is spliced ​​with a side of the incinerator body close to the electric pushing plate, the barrel has an outlet on the side away from the electric rotating plate, a feed pipe is fixedly connected in the barrel, the electric pushing plate blocks the port of the feed pipe close to the side of the electric rotating plate, an upper cavity is formed between the upper side of the feed pipe and the barrel, a lower cavity is formed between the lower side of the feed pipe and the barrel, a through groove connecting the upper cavity and the lower cavity is opened on the side of the feed pipe close to the outlet of the barrel, an exhaust pipe is spliced ​​with the top of the incinerator body, and the exhaust pipe is connected to the feed The top of the barrel is connected by splicing, and the exhaust pipe guides the hot flue gas to the upper cavity, the exhaust pipe is connected with a ventilation pipe, and the ventilation pipe is connected with the bottom of the barrel by splicing, and the ventilation pipe guides the hot flue gas to the lower cavity, a fixing plate is fixedly connected to one end of the exhaust pipe close to the barrel, the fixing plate has protrusions evenly distributed in the circumference, the fixing plate has through holes evenly distributed in the circumference, the through holes of the fixing plate and the protrusions are alternately distributed, the fixing plate is rotatably connected to a rotating rod, the end of the rotating rod away from the fixing plate is fixedly connected to a turbine, a slide plate is slidably connected in the exhaust pipe, the slide plate has holes corresponding to the protrusions, and when the slide plate moves downward, the protrusion is inserted into the hole of the slide plate, the rotating rod has a reciprocating spiral groove, and the slide plate is limitedly matched with the reciprocating spiral groove.

[0007] Preferably, at least one support frame is further included, and the support frame is fixedly connected to the bottom of the barrel.

[0008] Preferably, a drain valve is further included, and the drain valve is fixedly connected to the bottom of the ventilation pipe.

[0009] Preferably, it also includes an electric push rod symmetrically distributed along the front and rear sides of the feed pipe, the electric push rod is fixedly connected to the feed pipe, the feed pipe is slidably connected to the guide plates symmetrically distributed along the front and rear sides of the feed pipe, the telescopic end of the electric push rod is fixedly connected to the adjacent guide plate on the same side, the feed pipe is slidably connected to the induced draft rack symmetrically distributed along the upper and lower sides of the feed pipe, the induced draft rack is used to guide the hot flue gas to the sludge, and the front and rear sides of the induced draft rack are respectively squeezed and matched with the guide plates on the front and rear sides.

[0010] Preferably, the draft frame is provided with a deep groove for introducing hot flue gas into the deep part of the sludge in the feed pipe.

[0011] Preferably, it further comprises air guide plates which are distributed at equal intervals, the air guide plates being rotatably connected to a side of the barrel close to the upper cavity, and the air guide plates being used to guide hot flue gas into the deep groove of the upper draft frame.

[0012] Preferably, it also includes U-shaped plates symmetrically distributed along the guide plates, the U-shaped plates are fixedly connected to the adjacent guide plates, the outside of the feed pipe is provided with an inclined groove corresponding to the U-shaped plates, a pull rack is slidably connected in the inclined groove, the U-shaped plate is limitedly matched with the adjacent pull rack, a baffle corresponding to the pull rack is slidably connected in the feed pipe, the pull rack is fixed with a plurality of booster plates for assisting in pushing the sludge, and the booster plates are slidably connected to the adjacent baffles.

[0013] Preferably, the booster plate is configured to be in the shape of a triangular prism.

[0014] Preferably, a triangular block is further included, wherein the triangular block is fixedly connected to a side of the barrel close to the upper cavity, and a baffle is slidably connected to a side of the upper draft frame close to the feed pipe outlet, and the baffle moves upward to contact the triangular block, and a plurality of liquid outlets are opened on a side of the upper draft frame close to the baffle, and the baffle is used to block the liquid outlet.

[0015] Preferably, a spring is further included, and the spring is fixed between the air induction frame and the blocking frame on the upper side.

[0016] The beneficial effects are as follows:

[0017] 1. The present invention realizes orderly multi-stage temperature rising treatment through primary preheating, secondary heating and tertiary combustion, gradually increases the temperature of sludge, ensures that the sludge can be fully treated, and in the preheating stage, the hot flue gas flows not only in the upper cavity, but also in the lower cavity, ensures that the upper and lower sides of the sludge can be fully preheated, and the hot flue gas in the exhaust pipe is automatically cyclically switched between the upper cavity and the lower cavity through the turbine, rotating rod, slide plate and other mechanisms, so that the sludge in the feed pipe is preheated more evenly.

[0018] 2. The liquid condensed by the hot flue gas of the present invention when it is cooled can be discharged through the drain valve, and the structural design of the retaining frame, spring and triangular block ensures that the condensed liquid in the deep groove of the upper induced draft frame can be discharged in time to avoid the accumulation of condensed liquid affecting the preheating effect.

[0019] 3. The design of the draft rack and the air guide plate of the present invention enables the hot flue gas in the upper cavity and the lower cavity to be introduced into the feed pipe through the draft rack, so that the hot flue gas can transfer heat more deeply to the sludge in the feed pipe. Multi-directional heat conduction can enhance the heat transfer efficiency, thereby further improving the preheating effect.

[0020] 4. The design of the booster plate and the baffle of the present invention helps to push the dry and hard sludge to be discharged to the lower left during the preheating process, thereby preventing the preheated sludge in the feed pipe from being partially dry and hard and difficult to discharge.

[0021] 5. The present invention ensures that the sludge can smoothly enter the incinerator body for treatment through the cooperation of the electric push plate and the electric rotating plate. The movement of the guide plate makes room for the sludge discharge and avoids the influence of the induced draft frame on the sludge discharge. The U-shaped plate, the pulling frame, the inclined groove and other structural designs ensure that the booster plate can slide smoothly to make room for the sludge discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the incinerator body, barrel, exhaust pipe and other components of the present invention.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the exhaust pipe, ventilation pipe, fixing plate and other components of the present invention.

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the fixing plate, rotating rod, turbine and other components of the present invention.

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the guide plate, air induction frame and air guide plate and other components of the present invention.

[0027] Figure 6 This is a three-dimensional structural separation diagram of the feed pipe, the air induced frame and the air guide plate of the present invention.

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the guide plate, U-shaped plate, and pull frame of the present invention.

[0029] Figure 8 It is a three-dimensional structural schematic diagram of the components such as the pull frame, the baffle plate and the booster plate of the present invention.

[0030] Fig. 9 This is a three-dimensional structural separation diagram of the components such as the pull frame, the baffle and the booster plate of the present invention.

[0031] Fig.10 It is a three-dimensional structural schematic diagram of the components such as the induced draft frame, the triangular block and the retaining frame of the present invention.

[0032] Fig.11 It is a three-dimensional structural schematic diagram of the components such as the induced draft frame, the baffle frame and the spring of the present invention.

[0033] Markings in the attached drawings: 1-incinerator body; 101-electric push plate; 102-electric rotating plate; 2-barrel; 201-feeding pipe; 202-through groove; 3-support frame; 4-exhaust pipe; 5-ventilation pipe; 501-drain valve; 6-fixed plate; 601-bump; 7-rotating rod; 8-turbine; 9-slide plate; 901-reciprocating spiral groove; 10-electric push rod; 11-guide plate; 12-draft frame; 13-wind guide plate; 14-U-shaped plate; 141-slanted groove; 15-pull frame; 16-baffle; 17-boost plate; 18-triangle block; 19-baffle frame; 20-spring. DETAILED DESCRIPTION

[0034] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0035] Example 1: A combined multi-stage sludge treatment device, such as Figures 1 to 4 As shown, it includes an incinerator body 1, an electric push plate 101 is slidably connected to the right side of the incinerator body 1 along the up and down direction, and an electric rotating plate 102 symmetrically distributed along the left and right sides of the incinerator is rotatably connected inside the incinerator body 1, and the electric rotating plate 102 is located below the electric push plate 101. A barrel 2 is spliced ​​to the upper right side of the incinerator body 1 by bolts, and an outlet is opened on the upper right side of the barrel 2. A feed pipe 201 is fixedly connected to the barrel 2, and the electric push plate 10 1 blocks the port on the left side of the feed pipe 201, an upper cavity is formed between the upper side of the feed pipe 201 and the barrel 2, a lower cavity is formed between the lower side of the feed pipe 201 and the barrel 2, a through slot 202 connecting the upper cavity and the lower cavity is opened on the right side of the feed pipe 201, two support frames 3 are fixed to the bottom of the barrel 2, an exhaust pipe 4 is spliced ​​with bolts on the top of the incinerator body 1, the exhaust pipe 4 is connected to the top of the barrel 2 by bolts, and the exhaust pipe 4 transfers the hot The flue gas is guided to the upper cavity, the exhaust pipe 4 is connected with a ring-shaped ventilation pipe 5, the ventilation pipe 5 is connected with the bottom of the barrel 2 by bolt splicing, the ventilation pipe 5 guides the hot flue gas to the lower cavity, the bottom of the ventilation pipe 5 is fixed with a drain valve 501 for discharging the condensate of the hot flue gas, the end of the exhaust pipe 4 close to the barrel 2 is fixed with a fixing plate 6, the fixing plate 6 has five circumferentially evenly distributed protrusions 601, the fixing plate 6 has five circumferentially evenly distributed through holes, and the fixing plate 6 has five circumferentially evenly distributed protrusions 601. The through holes and the protrusions 601 of the plate 6 are alternately distributed, and the fixed plate 6 is rotatably connected to a rotating rod 7, and a turbine 8 is fixedly connected to the top of the rotating rod 7. When the hot flue gas flows in the exhaust pipe 4, the turbine 8 is blown to rotate. A slide plate 9 is slidably connected in the exhaust pipe 4 along the up and down directions. The slide plate 9 has holes corresponding to the protrusions 601. When the slide plate 9 moves downward, the protrusions 601 are inserted into the holes of the slide plate 9. The rotating rod 7 has a reciprocating spiral groove 901, and the slide plate 9 is limitedly matched with the reciprocating spiral groove 901.

[0036] When using the present device to process sludge, firstly install the exhaust pipe 4 on the top of the incinerator body 1 by means of bolts, install the barrel 2 on the right side of the incinerator body 1 by means of bolts, install the exhaust pipe 4 and the ventilation pipe 5 on the barrel 2 by means of bolts, and then put the first batch of sludge into the incinerator body 1 for combustion. During the combustion process, the subsequent sludge is first added into the feed pipe 201, and the subsequent sludge is temporarily stored in the feed pipe 201 through the blocking of the electric push plate 101. In this way, during the high-temperature incineration process, the flue gas generated by the incineration can be used to preheat the sludge in the feed pipe 201. Specifically, since the hot flue gas has a natural tendency to rise, the flue gas tends to flow upward into the exhaust pipe 4, and most of the hot flue gas in the exhaust pipe 4 It flows from left to right along the upper cavity formed by the feed pipe 201 and the barrel 2, and a small part of the hot flue gas flows from left to right along the lower cavity formed by the feed pipe 201 and the barrel 2, and then flows into the upper cavity through the through groove 202, and is finally discharged from the outlet on the upper right side of the barrel 2. After a period of time, the electric push plate 101 is controlled to slide upward along the incinerator body 1 to open, so that the preheated sludge in the feed pipe 201 is discharged to the electric turn plate 102 for secondary heating. When the sludge in the incinerator body 1 is processed, the incinerator body 1 is opened, the sludge in the incinerator body 1 is taken out, and then the incinerator body 1 is closed. After a period of time, the electric turn plate 102 is controlled to open again, so that the sludge falls to the bottom of the incinerator body 1 for tertiary combustion, thereby achieving multi-stage temperature treatment of the sludge.

[0037] In the above preheating process, in order to avoid uneven preheating of the upper and lower sides of the feed pipe 201, resulting in uneven preheating of the upper and lower sides of the sludge, it is necessary to switch intermittently so that most of the hot flue gas in the exhaust pipe 4 passes through the upper cavity and the lower cavity in turn. The specific operation is as follows: the hot flue gas in the exhaust pipe 4 drives the turbine 8 to rotate, thereby driving the rotating rod 7 to rotate, and then drives the slide plate 9 to move downward along the reciprocating spiral groove 901, so that the protrusion 601 is inserted into the corresponding hole of the slide plate 9, so that the hot flue gas in the exhaust pipe 4 cannot enter the upper cavity The sludge in the feed pipe 201 is preheated as evenly as possible. In addition, the liquid condensed by the hot flue gas meets the cold air and flows downward to the bottom of the ventilation pipe 5, and the liquid can be discharged by opening the drain valve 501.

[0038] Embodiment 2: Based on embodiment 1, Figure 5 and Figure 6As shown, it also includes an electric push rod 10 symmetrically distributed along the front and rear sides of the feed pipe 201, the electric push rod 10 is fixedly connected to the feed pipe 201, the feed pipe 201 is slidably connected to the guide plates 11 symmetrically distributed along the front and rear sides of the feed pipe 201 along the left and right directions, the telescopic end of the electric push rod 10 is fixedly connected to the adjacent guide plates 11 on the same side, the feed pipe 201 is slidably connected to the induced draft racks 12 symmetrically distributed along the upper and lower sides of the feed pipe 201 along the up and down directions, the induced draft racks 12 are used to guide the hot flue gas to the sludge, the front and rear sides of the induced draft racks 12 are respectively squeezed and matched with the front and rear guide plates 11 on the front and rear sides, the induced draft racks 12 are opened with deep grooves for guiding the hot flue gas into the deep part of the sludge in the feed pipe 201, and the side of the barrel 2 close to the upper cavity is rotatably connected with three equally spaced induced draft plates 13, the induced draft plates 13 are used to guide the hot flue gas into the deep grooves of the upper induced draft racks 12.

[0039] During preheating, the draft rack 12 is deeply inserted into the feed pipe 201, and the air guide plate 13 guides the hot flue gas in the upper cavity into the deep groove of the upper draft rack 12, thereby guiding the hot flue gas in the upper cavity into the feed pipe 201. The hot flue gas in the lower cavity has an upward tendency, so it automatically floats up to the deep groove of the lower draft rack 12, thereby guiding the hot flue gas in the lower cavity into the feed pipe 201. That is, the hot flue gas in the upper cavity and the lower cavity can be guided into the feed pipe 201 through the draft rack 12, so that the hot flue gas can transfer heat to the sludge more deeply, thereby improving the preheating effect of the sludge.

[0040] Before controlling the electric push plate 101 to slide upward and open so that the sludge in the feed pipe 201 is discharged onto the electric rotating plate 102, the electric push rod 10 is first controlled to drive the guide plate 11 to move to the left. Under the squeezing action of the guide plate 11, the air induced racks 12 on the upper and lower sides slide to the side away from the feed pipe 201, making room for the sludge to be discharged to the lower left, avoiding the air induced rack 12 affecting the sludge discharge to the lower left. After the next batch of sludge enters the feed pipe 201, the electric push rod 10 is controlled to drive the guide plate 11 to move to the right. Under the squeezing action of the guide plate 11, the air induced rack 12 is deeply inserted into the feed pipe 201 again.

[0041] Embodiment 3: Based on embodiment 2, Figures 7 to 9 As shown, it also includes U-shaped plates 14 symmetrically distributed along the left and right sides of the guide plate 11, the U-shaped plates 14 are fixedly connected to the adjacent guide plates 11, the outside of the feed pipe 201 is opened with an inclined groove 141 corresponding to the U-shaped plate 14, and a pull frame 15 is slidably connected in the inclined groove 141. The U-shaped plate 14 and the adjacent pull frame 15 are limited and matched, and a baffle 16 corresponding to the pull frame 15 is slidably connected inside the feed pipe 201 along the left and right directions. The pull frame 15 is fixed with a plurality of booster plates 17 for assisting in pushing the sludge. The booster plates 17 are set to a triangular prism shape, and the booster plates 17 are slidably connected to the adjacent baffle plates 16.

[0042] When the sludge is preheated in the feed pipe 201, it may become dry and hard locally, which makes it difficult for the sludge in the feed pipe 201 to be discharged to the left later. Therefore, the boosting plate 17 is required to play a boosting role at this time. The specific operation is as follows:

[0043] When the guide plate 11 moves to the left, it drives the U-shaped plate 14 to move to the left together, thereby driving the pull frame 15 to move to the left together, and then driving the booster plate 17 to move to the left. The booster plate 17 drives the baffle plate 16 to move to the left together. The baffle plate 16 is used to block the sliding channel of the booster plate 17 on the feed pipe 201 in real time. The booster plate 17 assists in pushing the sludge to be discharged to the lower left. At the same time, under the guiding effect of the chute 141, the pull frame 15 moving to the left slides to the side away from the feed pipe 201 at the same time, thereby driving the booster plate 17 to slide outward along the baffle plate 16, that is, the booster plate 17 is pushed back. It also makes room for the sludge to be discharged to the lower left, preventing the booster plate 17 from affecting the discharge of sludge to the lower left. After the next batch of sludge enters the feed pipe 201, the guide plate 11 moves to the right, driving the U-shaped plate 14 to move to the right together, thereby driving the pull frame 15 to move to the right together, and then driving the booster plate 17 to move to the right. The booster plate 17 drives the baffle plate 16 to move to the right together. At the same time, under the guiding effect of the inclined groove 141, the pull frame 15 moving to the right slides to the side close to the feed pipe 201 at the same time, thereby driving the booster plate 17 to slide inward along the baffle plate 16.

[0044] Embodiment 4: Based on embodiment 3, Fig.10 and Fig.11 As shown, a triangular block 18 is also included, which is fixedly connected to one side of the barrel 2 near the upper cavity. A baffle 19 is slidably connected to one side of the upper draft frame 12 near the outlet of the feed pipe 201 along the front-to-back direction. The baffle 19 moves upward and contacts the triangular block 18. A plurality of liquid outlets are opened on one side of the upper draft frame 12 near the baffle 19. The baffle 19 is used to block the liquid outlet. A spring 20 is fixedly connected between the upper draft frame 12 and the baffle 19.

[0045] Since the liquid condensed by the flue gas when passing through the upper cavity will accumulate in the deep groove of the upper induced draft frame 12, affecting the enhanced preheating of the upper part of the sludge, it is necessary to discharge the liquid in the deep groove of the upper induced draft frame 12 in time. The specific operation is as follows:

[0046] When the upper draft frame 12 is deeply inserted into the feed pipe 201, the baffle 19 blocks the liquid outlet of the upper draft frame 12. In the process of the upper draft frame 12 moving toward the side away from the feed pipe 201, the upper draft frame 12 drives the baffle 19 and the spring 20 to move upward together. When the baffle 19 moves upward until it contacts the triangular block 18, it is squeezed by the triangular block 18 and slides toward the side close to the spring 20. The spring 20 is compressed, so that the liquid outlet of the upper draft frame 12 is no longer blocked by the baffle 19. The liquid in the deep groove of the upper draft frame 12 can be discharged in time, and the liquid is finally discharged through the drain valve 501.

[0047] When the upper draft frame 12 moves toward the side close to the feed pipe 201, the upper draft frame 12 drives the baffle frame 19 and the spring 20 to move downward together. When the baffle frame 19 moves downward to be separated from the triangular block 18, the baffle frame 19 slides toward the side away from the spring 20 due to the resetting action of the spring 20, so that the liquid outlet of the upper draft frame 12 is blocked by the baffle frame 19 again.

[0048] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A combined multi-stage sludge treatment device, comprising an incinerator body (1), characterized in that: An electric push plate (101) is slidably connected to one side of the incinerator body (1), and an electric rotating plate (102) symmetrically distributed along the incinerator is rotatably connected to the incinerator body (1), and the electric rotating plate (102) is located below the electric push plate (101). A barrel (2) is spliced ​​on one side of the incinerator body (1) close to the electric push plate (101), and an outlet is opened on the side of the barrel (2) away from the electric rotating plate (102). A feed pipe (201) is fixedly connected to the barrel (2), and the electric push plate ( 101) blocks the port of the feed pipe (201) close to the electric rotating plate (102), an upper cavity is formed between the upper side of the feed pipe (201) and the barrel (2), a lower cavity is formed between the lower side of the feed pipe (201) and the barrel (2), a through groove (202) connecting the upper cavity and the lower cavity is formed on the side of the feed pipe (201) close to the outlet of the barrel (2), an exhaust pipe (4) is spliced ​​to the top of the incinerator body (1), and the exhaust pipe (4) and the top of the barrel (2) are spliced ​​together. The exhaust pipe (4) guides the hot flue gas to the upper cavity. The exhaust pipe (4) is connected to a ventilation pipe (5). The ventilation pipe (5) is connected to the bottom of the barrel (2) by splicing. The ventilation pipe (5) guides the hot flue gas to the lower cavity. A fixing plate (6) is fixedly connected to one end of the exhaust pipe (4) close to the barrel (2). The fixing plate (6) has circumferentially evenly distributed protrusions (601). The fixing plate (6) has circumferentially evenly distributed through holes. The through holes of the fixing plate (6) are connected to the protrusions ( 601), the fixed plate (6) is rotatably connected to a rotating rod (7), one end of the rotating rod (7) away from the fixed plate (6) is fixedly connected to a turbine (8), a slide plate (9) is slidably connected in the exhaust pipe (4), the slide plate (9) is provided with a hole corresponding to the protrusion (601), when the slide plate (9) moves downward, the protrusion (601) is inserted into the hole of the slide plate (9), the rotating rod (7) is provided with a reciprocating spiral groove (901), and the slide plate (9) is limitedly matched with the reciprocating spiral groove (901).

2. The combined multi-stage sludge treatment equipment according to claim 1 is characterized in that: It also comprises at least one support frame (3), wherein the support frame (3) is fixedly connected to the bottom of the barrel (2).

3. The combined multi-stage sludge treatment equipment according to claim 2 is characterized in that: It also includes a liquid discharge valve (501), wherein the liquid discharge valve (501) is fixedly connected to the bottom of the ventilation pipe (5).

4. The combined multi-stage sludge treatment equipment according to claim 3 is characterized in that: The invention also comprises an electric push rod (10) symmetrically distributed along the front and rear sides of the feed pipe (201), the electric push rod (10) being fixedly connected to the feed pipe (201), the feed pipe (201) being slidably connected to guide plates (11) symmetrically distributed along the front and rear sides of the feed pipe (201), the telescopic end of the electric push rod (10) being fixedly connected to the guide plates (11) adjacent to the same side, the feed pipe (201) being slidably connected to induced draft racks (12) symmetrically distributed along the upper and lower sides of the feed pipe (201), the induced draft racks (12) being used to guide hot flue gas to sludge, and the front and rear sides of the induced draft racks (12) being respectively pressed and matched with the guide plates (11) at the front and rear sides.

5. The combined multi-stage sludge treatment equipment according to claim 4 is characterized in that: The induced draft frame (12) is provided with a deep groove for guiding the hot flue gas into the deep part of the sludge in the feed pipe (201).

6. The combined multi-stage sludge treatment equipment according to claim 5 is characterized in that: It also includes air guide plates (13) distributed at equal intervals, the air guide plates (13) being rotatably connected to a side of the barrel (2) close to the upper cavity, the air guide plates (13) being used to guide hot flue gas into the deep groove of the upper air induction frame (12).

7. The combined multi-stage sludge treatment equipment according to claim 6 is characterized in that: The invention also comprises U-shaped plates (14) symmetrically distributed along the guide plates (11), the U-shaped plates (14) being fixedly connected to the adjacent guide plates (11), the feed pipe (201) being provided with an inclined groove (141) corresponding to the U-shaped plates (14) on the outside, a pull rack (15) being slidably connected inside the inclined groove (141), the U-shaped plates (14) being limitedly matched with the adjacent pull racks (15), a baffle (16) corresponding to the pull rack (15) being slidably connected inside the feed pipe (201), the pull rack (15) being fixedly connected with a plurality of booster plates (17) for assisting in pushing sludge, the booster plates (17) being slidably connected to the adjacent baffle plates (16).

8. The combined multi-stage sludge treatment equipment according to claim 7 is characterized in that: The boosting plate (17) is configured to be in the shape of a triangular prism.

9. The combined multi-stage sludge treatment equipment according to claim 8 is characterized in that: It also includes a triangular block (18), the triangular block (18) being fixedly connected to a side of the barrel (2) near the upper cavity, a blocking frame (19) being slidably connected to a side of the upper draft frame (12) near the outlet of the feed pipe (201), the blocking frame (19) moving upward to contact the triangular block (18), a side of the upper draft frame (12) near the blocking frame (19) having a plurality of liquid outlets, the blocking frame (19) being used to block the liquid outlets.

10. The combined multi-stage sludge treatment equipment according to claim 9, characterized in that: It also includes a spring (20), wherein the spring (20) is fixedly connected between the air induction frame (12) and the blocking frame (19) on the upper side.

Images