Sludge and polluted soil collaborative sintering device

Abstract

The utility model discloses a collaborative sintering device for sludge and polluted soil. The collaborative sintering device comprises a pretreatment unit, a stirring unit and a sintering unit, wherein the pretreatment unit comprises a sludge sieving machine roller type crusher; the sintering unit comprises a green brick machine and a tunnel furnace; the stirring unit comprises a stirring tank body, a tank body cover, a stirring assembly and a waste gas treatment assembly; a gas outlet of the waste gas treatment assembly is communicated with the tunnel furnace. According to the utility model, the pretreatment unit and the stirring unit are arranged, so that the pretreatment work of sludge and polluted soil can be fully realized, and the quality of sintered products is improved; due to the arrangement of the waste gas treatment assembly, overflow of foul odor and pollutants can be better controlled in the mixing process; the stirring assembly adopts a plurality of unit blade combinations, the blades are arranged in a staggered manner, the mixing effect can be better achieved, meanwhile, the stirring shaft and the stirring blades can be detachably connected, and maintenance and replacement are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a sludge and contaminated soil coordinated sintering device. Background Art

[0002] The coordinated sintering of sludge and contaminated soil is a technology for resource-based treatment of sludge and contaminated soil. This technology achieves the goals of large-scale, resource-based utilization and harmlessness of sludge, silt and lightly contaminated soil.

[0003] Generally speaking, the coordinated sintering of sludge and contaminated soil roughly includes the following treatment procedures: pretreatment of sludge and contaminated soil, stirring and mixing of sludge and contaminated soil, and mixed sintering. In order to improve the uniformity of the final sintered product, the sludge, contaminated soil and added materials need to be fully and evenly mixed. The use of currently commonly used mixing equipment mainly has the following problems: sludge and contaminated soil contain a lot of pollutants and most of them have a foul odor, which can easily cause the overflow of pollutants and foul odors during the mixing process; sludge and contaminated soil contain a certain amount of sand components, which can easily and quickly wear out the mixing equipment; the mixing process includes stirring for sludge with strong fluidity and mixing sludge and contaminated soil with poor fluidity. In response to this demand, the existing mixing equipment often cannot achieve a good mixing effect. Utility Model Content

[0004] The utility model aims to provide a sludge and contaminated soil cooperative sintering device to solve the problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a sludge and contaminated soil coordinated sintering device including a pretreatment unit, a stirring unit, and a sintering unit, wherein the pretreatment unit includes a sludge screening machine and a roller crusher; the sintering unit includes a brick machine and a tunnel furnace; the stirring unit includes a stirring tank body, a tank body cover, a stirring assembly, and an exhaust gas treatment assembly; the exhaust gas treatment assembly is connected to the tunnel furnace.

[0006] Furthermore, the mixing tank body is a box structure with an opening on the top, and a discharge port and an openable and closable mixture outlet structure are arranged at the bottom. The mixture outlet structure includes two revolving doors and a driving hydraulic cylinder. The two revolving doors include door panels and a rotating plate. Both ends of the door panels are fixed to the lower end of the rotating plate. The upper part of the rotating plate is rotatably hinged to the mixing tank body, and gears are arranged at the hinges. The two gears are meshed with each other. Both ends of the driving hydraulic cylinder are hinged to the lower middle part of the rotating plate. A polarization motor is fixed on the outer side wall of the mixing tank body; a tank body cover is arranged at the upper opening of the mixing tank body.

[0007] Furthermore, the stirring assembly includes a stirring motor, a stirring shaft, and a stirring blade group, the stirring blade group is composed of multiple units, each unit includes two radial blades and several circumferential blades, the radial blades include a connecting base plate and a radial rod, the connecting base plate is a bent plate with a groove in the middle, one end of the radial rod passes through the connecting base plate and extends into the through hole on the stirring shaft, the radial rod is fixedly connected to the connecting base plate by welding, the two radial blades are arranged opposite to each other, and the two connecting base plates are tightened by a bolt structure to achieve a detachable connection with the stirring shaft; the radial blades of adjacent units are staggered by 90 degrees; one end of the circumferential blade is fixed to the end of the radial blade, and the other side is fixed to the end of the radial blade of the adjacent unit.

[0008] Furthermore, a plurality of groups of fins perpendicular to the circumferential blades are arranged on some of the circumferential blades.

[0009] Furthermore, the waste gas treatment component is arranged at the upper opening of the mixing tank body, covering the upper opening of the mixing tank body on one side, and the rest is covered by the tank body cover. The waste gas treatment component includes a box body and a bag filter barrel. The box body has an opening at the bottom, and the internal cavity is connected to the internal cavity of the mixing tank body. An opening is set at the top of the box body, which is connected to the bag filter barrel, and the air outlet of the bag filter barrel is connected to the tunnel furnace.

[0010] Furthermore, the exhaust gas treatment component also includes a plurality of partitions, which are arranged obliquely, with the higher side fixedly connected to the box body with two adjacent side edges, and the lower side having a gap with the inner wall of the box body, and adjacent partitions are arranged in a staggered manner.

[0011] Compared with the prior art, the technical solution of the utility model has the following advantages: the use of pretreatment equipment such as a roller crusher can more fully realize the pretreatment of sludge and contaminated soil, thereby improving the quality of the sintered product; the setting of the exhaust gas treatment component can better control the overflow of malodor and pollutants during the mixing process; the stirring component adopts a blade combination of multiple units, and the blades are staggered, which can better achieve the mixing effect. At the same time, the stirring shaft and the stirring blade can also be detachably connected, which is convenient for maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall solution of the utility model.

[0013] Figure 2 It is a schematic diagram of the stirring unit of the utility model.

[0014] Figure 3 It is a schematic diagram of the stirring unit box cover and the exhaust gas treatment component of the utility model.

[0015] Figure 4 It is a cutaway schematic diagram of the waste gas treatment component of the utility model.

[0016] Figure 5 This is a schematic diagram of the lower part of the mixing tank of the utility model

[0017] Figure 6 This is a schematic diagram of the stirring component of the utility model

[0018] Figure 7 This is a schematic diagram of the stirring blade group of the stirring component of the utility model

[0019] Figure 8 This is a schematic diagram of the circumferential blades of the stirring assembly of the utility model DETAILED DESCRIPTION

[0020] 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.

[0021] As attached Figure 1 As shown, the utility model involves a sludge and contaminated soil cooperative sintering device, which includes a pretreatment unit 1, a stirring unit 2, and a sintering unit 3, wherein the pretreatment unit includes a sludge screener 11 for screening the sludge to remove large particles such as stones, and a roller crusher 12 for crushing the contaminated soil and the large particles obtained by the sludge screener 11; the sintering unit 3 includes a brick machine 31 and a tunnel furnace 32, the brick machine 31 is used to prepare the mixture obtained by the stirring unit 2 into bricks, and the tunnel furnace 32 is used to sinter the bricks.

[0022] The sludge screening machine 11, the roller crusher 12, the brick machine 31 and the tunnel furnace 32 may be existing equipment in the field.

[0023] As attached Figure 2-8 As shown, the stirring unit 2 includes a stirring tank body 21 , a tank body cover 22 , a stirring component 23 , and an exhaust gas treatment component 24 .

[0024] As attached Figure 2 , 5As shown, the mixing tank body 21 is a box structure with an opening on the top, and a discharge port and an openable and closable mixture outlet structure 211 are arranged at the bottom. The mixture outlet structure 211 includes two revolving doors 2111 and a driving hydraulic cylinder 2112. The two revolving doors 2111 include a door panel a1 and a rotating plate a2. Both ends of the door panel a1 are fixed to the lower end of the rotating plate a2. The upper part of the rotating plate b is rotatably hinged to the mixing tank body 21, and gears a3 are arranged at the hinges. The two gears a3 are meshed with each other. Both ends of the driving hydraulic cylinder 2112 are hinged to the middle and lower part of the rotating plate a2. The two revolving doors 2111 cover the discharge port.

[0025] A polarization motor 212 is fixed on the outer side wall of the mixing tank body 21, which is used to vibrate the side wall when necessary to reduce the deposition of materials on the side wall and speed up the discharge of materials.

[0026] A tank cover 22 is provided at the upper opening of the mixing tank body 21. A typical mixing process of an embodiment of the present application is as follows: sludge and sludge treatment additives (solidifying agent, chelating agent) are added to the mixing tank body 21. After mixing evenly, contaminated soil is added in batches, and the tank cover 22 needs to be opened and closed multiple times. The tank cover 22 is opened and closed by a hydraulic cylinder 221.

[0027] As attached Figure 6 , 7 As shown in Figure 8, the stirring assembly 23 includes a stirring motor 231, a stirring shaft 232, and a stirring blade group 233. Both ends of the stirring shaft 232 are rotatably connected to the side wall of the stirring tank body 21, and one end extends out of the stirring tank body 21 to be connected to the stirring motor 231. The stirring blade group 233 is arranged on the stirring shaft 232.

[0028] The stirring blade group 233 is composed of a plurality of units, each unit including two radial blades b1 and a plurality of circumferential blades b2, the radial blade b1 including a connecting bottom plate b11, a radial rod b12, and a support plate b13, the connecting bottom plate b11 is a bent plate with a groove in the middle, one end of the radial rod b12 passes through the connecting bottom plate b11 and extends into the through hole 2321 on the stirring shaft 232, the radial rod b12 is fixedly connected with the connecting bottom plate b11 by welding, and a support plate b13 is arranged between the radial rod b12 and the connecting bottom plate b11 to improve the connection strength, support the radial rod b12, and play a certain stirring role. The two radial blades b1 are arranged opposite to each other, and the two connecting bottom plates are tightened by a bolt structure to realize a detachable connection with the stirring shaft.

[0029] The radial blades b1 of adjacent units are staggered at a certain angle, 90 degrees in the figure.

[0030] One end of the circumferential blade b2 is fixed to the end of the radial blade b1 , and the other end is fixed to the end of the radial blade b1 of the adjacent unit.

[0031] The stirring assembly 23, especially the stirring blade assembly 233, can be conveniently replaced after a blade is worn.

[0032] In order to further improve the mixing effect of sludge with strong fluidity and sludge treatment additives (solidifying agent, chelating agent), a plurality of groups of fins b21 perpendicular to the circumferential blades b2 are provided on part of the circumferential blades b2 to "tear" the sludge clumps during the stirring process.

[0033] As attached Figure 3 , 4 As shown, the exhaust gas treatment component 24 is arranged at the upper opening of the mixing tank body 21, covering the upper opening of the mixing tank body 21 on one side, and the rest is covered by the tank cover 22. The exhaust gas treatment component 24 includes a box body 241, a partition 242, and a bag filter barrel 243. The box body is opened at the bottom, and the internal cavity is connected to the internal cavity of the mixing tank body 21. The partition 242 is arranged obliquely, and the higher side is fixedly connected to the box body 241 with two adjacent sides, and the lower side is provided with a gap with the inner wall of the box body 241. Adjacent partitions 242 are arranged in a staggered manner, that is, the lower side with the gap is arranged relatively. The top of the box body 241 is provided with an opening, which is connected to the bag filter barrel 243. The bag filter barrel 243 is provided with a filter bag and a fan. Under the action of vibration, the filter bag has a certain self-cleaning ability, and the air outlet of the bag filter barrel 243 is connected to the tunnel furnace 32.

[0034] It should be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; 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 this utility model can be understood according to specific circumstances.

Claims

1. A sludge and contaminated soil coordinated sintering device, characterized in that: It includes a pretreatment unit, a stirring unit and a sintering unit, wherein the pretreatment unit includes a sludge screening machine and a roller crusher; the sintering unit includes a brick machine and a tunnel furnace; the stirring unit includes a stirring tank body, a tank body cover, a stirring assembly and a waste gas treatment assembly; the gas outlet of the waste gas treatment assembly is connected to the tunnel furnace.

2. The sludge and contaminated soil coordinated sintering device according to claim 1, characterized in that: The mixing tank body is a box structure with an opening on the top, and a discharge port and an openable and closable mixed material outlet structure are arranged at the bottom. The mixed material outlet structure includes two revolving doors and a driving hydraulic cylinder. The two revolving doors include door panels and a rotating plate. Both ends of the door panels are fixed to the lower end of the rotating plate. The upper part of the rotating plate is rotatably hinged to the mixing tank body, and gears are arranged at the hinges. The two gears are meshed with each other. Both ends of the driving hydraulic cylinder are hinged to the lower middle part of the rotating plate. A polarization motor is fixed on the outer side wall of the mixing tank body; a tank body cover is arranged at the upper opening of the mixing tank body.

3. The sludge and contaminated soil coordinated sintering device according to claim 2, characterized in that: The stirring assembly includes a stirring motor, a stirring shaft, and a stirring blade group. The stirring blade group is composed of multiple units, each unit includes two radial blades and a plurality of circumferential blades, the radial blades include a connecting base plate and a radial rod, the connecting base plate is a bent plate with a groove in the middle, one end of the radial rod passes through the connecting base plate and extends into the through hole on the stirring shaft, the radial rod is fixedly connected to the connecting base plate by welding, the two radial blades are arranged opposite to each other, and the two connecting base plates are tightened by a bolt structure to achieve a detachable connection with the stirring shaft; the radial blades of adjacent units are staggered by 90 degrees; one end of the circumferential blade is fixed to the end of the radial blade, and the other side is fixed to the end of the radial blade of the adjacent unit.

4. The sludge and contaminated soil coordinated sintering device according to claim 3, characterized in that: A plurality of groups of fins perpendicular to the circumferential blades are arranged on some of the circumferential blades.

5. The sludge and contaminated soil coordinated sintering device according to claim 2, characterized in that: The exhaust gas treatment component is arranged at the upper opening of the mixing tank body, covering the upper opening of the mixing tank body on one side, and the rest is covered by the tank body cover. The exhaust gas treatment component includes a box body and a bag filter barrel. The box body has an opening at the bottom, and the internal cavity is connected to the internal cavity of the mixing tank body. An opening is set at the top of the box body, which is connected to the bag filter barrel, and the air outlet of the bag filter barrel is connected to the tunnel furnace.

6. The sludge and contaminated soil coordinated sintering device according to claim 5, characterized in that: The exhaust gas treatment component also includes a plurality of partitions, which are arranged obliquely, with the higher side fixedly connected to the box body with two adjacent side edges, and the lower side having a gap with the inner wall of the box body, and adjacent partitions are arranged in a staggered manner.

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