A river channel dredged mud solidification device and process

Abstract

The present invention discloses a device and process for solidifying river dredging mud, including a main body part. At least one side of the main body part is provided with a diaphragm compression chamber. The end of the diaphragm compression chamber away from the main body part is connected with a driving mechanism, and the driving mechanism is used to reciprocally push the diaphragm compression chamber to displace horizontally. An eddy stirring blade is installed in the middle of the main body part. At the bottom of the inner cavity of the main body part, there are inclined and opposite flow guiding plates. The surface of the flow guiding plates is provided with micro flow holes for gas and liquid to flow out. At the bottom of the flow guiding plates, there is a lower outlet, and at the bottom of the lower outlet, there is a nozzle to accelerate the discharge of the fluid. The present invention adopts the method of compression plus stirring to promote the pulsed surging of the river dredging mud. During the surging, the liquid is squeezed and separated, and the gas is accelerated to be discharged under the action of the bottom nozzle. The flow field formed by the gas promotes the accelerated discharge of water, thereby realizing solidification, and the waste gas is also collected.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and specifically to a river dredging sludge solidification device and process. Background Art

[0002] Sediment is one of the endogenous factors of river pollution. The organic matter in the sediment decomposes under the action of bacteria, which will reduce the dissolved oxygen concentration in the water. At the same time, malodorous gases such as hydrogen sulfide and phosphine are generated, making the river water turn black and stinky. Sediment dredging is to reduce the release of pollutants in the sediment into the water body by dredging the sediment.

[0003] The solidification treatment of this kind of river dredging sludge is different from traditional sludge, and the influence of internal polluting gases needs to be considered. Traditional sludge solidification is generally carried out by spreading and drying, and finally baking to form granular products, or directly used for production. Summary of the Invention

[0004] The purpose of the present invention is to provide a river dredging sludge solidification device and process to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A river dredging sludge solidification device and process, including a main body part, at least one side of the main body part is provided with a diaphragm compression chamber, the diaphragm compression chamber and the main body part are connected by a diaphragm soft connection, a spring is connected between the side part of the diaphragm compression chamber and the main body part, and the end of the diaphragm compression chamber away from the main body part is connected with a driving mechanism, and the driving mechanism is used to reciprocally push the diaphragm compression chamber to move horizontally;

[0006] An eddy stirring blade is installed in the middle of the main body part. The eddy stirring blade has a three-layer structure, and the blades of the upper and lower layers are vertically installed, and the blades of the middle layer are horizontally laid;

[0007] On the bottom of the inner cavity of the main body part, there are inclined and opposite flow guiding plates. Micro-flow holes are opened on the surface of the flow guiding plates for gas and liquid to flow out. A lower outlet is provided at the bottom of the flow guiding plates, and a nozzle is provided at the bottom of the lower outlet to accelerate the discharge of the fluid.

[0008] In a further embodiment, there are two diaphragm compression chambers in total, and they are symmetrically distributed on both sides of the main body part, and the driving mechanism synchronously drives the two diaphragm compression chambers to move towards each other.

[0009] In a further embodiment, the drive mechanism includes a first drive shaft and a second drive shaft. Drive gears are fixedly connected to both the first drive shaft and the second drive shaft, and the two drive gears mesh with each other. The first drive shaft is connected to a first sliding shaft through a first crank - connecting rod mechanism, and the second drive shaft is connected to a second sliding shaft through a second crank - connecting rod mechanism. The second sliding shaft has a hollow structure, and the first sliding shaft passes through the second sliding shaft and enters the curing device. The first sliding shaft and the second sliding shaft are respectively connected to sliding frames, and the two sliding frames are respectively installed in the left and right diaphragm compression chambers.

[0010] In a further embodiment, at the bottom of both the first drive shaft and the second drive shaft, there is a first crank connected. One end of the first crank is hinged to a first connecting rod, and one end of the first connecting rod is hinged to a second connecting rod. The second connecting rod has three connecting ends, and its left and right connecting ends are respectively connected to the first connecting rods connected to the first drive shaft and the second drive shaft, and its middle connecting end is hinged to the end of the first sliding shaft.

[0011] The other end of the first connecting rod is hinged to a third connecting rod. One end of the third connecting rod is hinged to an extension frame on the side of the second sliding shaft. Extension frames are provided on both sides of the second sliding shaft and are respectively connected to the third connecting rods connected to the first drive shaft and the second drive shaft.

[0012] In a further embodiment, the drive mechanism further includes a first transition rod and a second transition rod. One end of the first transition rod is coaxially hinged to the first crank and the first connecting rod, and the other end of the first transition rod is coaxially hinged to the third connecting rod and the second transition rod. The other end of the second transition rod is rotatably connected to the support base. Both the first drive shaft and the second drive shaft are installed on the upper support seat, and the upper support seat and the support base are connected as a whole.

[0013] In a further embodiment, the nozzle includes two spray - chamber structures arranged separately on the left and right. The spray - chamber structure includes a large spray chamber on the outside, and a nozzle gap is provided downward at a position near the middle of the large spray chamber.

[0014] A river - channel dredged - mud solidification process uses the above - mentioned river - channel dredged - mud solidification device, and includes the following steps: After putting the river - channel dredged mud into the main body part, adding a decomposition - assisting agent, through the pulsed compression of the diaphragm compression chamber and the stirring of the eddy - current stirring blades, the water and waste gas contained in the river - channel dredged mud are output through the guide plate and are accelerated in the nozzle.

[0015] In a further embodiment, after the water and waste gas contained in the river - channel dredged mud are output, they go through gas - liquid separation, and the gas part is input into a dedicated waste - gas treatment device for purification.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The present invention relates to a device and process for solidifying river dredging mud. By adopting a method of compression and stirring, it promotes the pulsed surging of river dredging mud. During the surging, the liquid is squeezed and separated, and the gas is accelerated and discharged under the action of the bottom nozzle. The flow field formed by the gas promotes the accelerated discharge of moisture, thereby achieving solidification, and the waste gas is also collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the driving structure of the present invention Figure 1 ;

[0020] Figure 3 It is a schematic diagram of the driving structure of the present invention Figure 2 ;

[0021] Figure 4 It is a schematic diagram of the eddy stirring blades of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1. This embodiment provides a device and process for solidifying river dredging mud, including a main body part 1. At least one side of the main body part 1 is provided with a diaphragm compression chamber 2. A diaphragm 3 is used for soft connection between the diaphragm compression chamber 2 and the main body part 1. A spring 4 is connected between the side part of the diaphragm compression chamber 2 and the main body part 1. Refer to Figure 1 As shown, a bracket is welded on the outer shell of the diaphragm compression chamber 2 and the outer shell of the main body part 1 respectively. A guide shaft is inserted on the bracket. One end of the guide shaft is connected to the bracket of the main body part 1, and a limiting plate is fixed at the other end of the guide shaft. A spring 4 is sleeved between the limiting plate and the bracket on the diaphragm compression chamber 2.

[0024] The end of the diaphragm compression chamber 2 far from the main body part 1 is connected with a driving mechanism 5, and the driving mechanism 5 is used for reciprocally pushing the diaphragm compression chamber 2 to move horizontally;

[0025] Refer to Figure 1 、 Figure 2 And Figure 3As shown in the figure, there are two diaphragm compression chambers 2 in total, which are symmetrically distributed on both sides of the main body 1, and the driving mechanism 5 synchronously drives the two diaphragm compression chambers 2 to move towards each other. The driving mechanism 5 includes a first driving shaft 51 and a second driving shaft 52. Driving gears are fixedly connected to both the first driving shaft 51 and the second driving shaft 52, and the two driving gears mesh with each other. The first driving shaft 51 is connected to the first sliding shaft 56 through a first crank and connecting rod mechanism, and the second driving shaft 52 is connected to the second sliding shaft 57 through a second crank and connecting rod mechanism. Moreover, the second sliding shaft 57 has a hollow structure. The first sliding shaft 56 passes through the second sliding shaft 57 and enters the curing device. The first sliding shaft 56 and the second sliding shaft 57 are respectively connected to a sliding frame 58, and the two sliding frames 58 are respectively installed in the left and right diaphragm compression chambers 2. A connecting bracket is provided in the diaphragm compression chamber 2 and is fixed to the sliding frame 58. In addition, since the first sliding shaft 26 needs to extend to the other side of the main body 1, a U-shaped bend can be adopted in the middle to avoid the structure in the middle of the main body 1.

[0026] At the bottom of both the first driving shaft 51 and the second driving shaft 52, a first crank 521 is connected. One end of the first crank 521 is hinged to a first connecting rod 59, and one end of the first connecting rod 59 is hinged to a second connecting rod 53. The second connecting rod 53 has three connecting ends. Its left and right connecting ends are respectively connected to the first connecting rods 59 connected to the first driving shaft 51 and the second driving shaft 52, and its middle connecting end is hinged to the end of the first sliding shaft 56.

[0027] The other end of the first connecting rod 59 is hinged to a third connecting rod 541. One end of the third connecting rod is hinged to an extension bracket 54 on the side of the second sliding shaft 57. Extension brackets are provided on both sides of the second sliding shaft 57 and are respectively connected to the third connecting rods 541 connected from the first driving shaft 51 and the second driving shaft 52.

[0028] Refer to Figure 3 As shown in the figure, the driving mechanism 5 further includes a first transition rod 522 and a second transition rod 523. One end of the first transition rod 522 is coaxially hinged to the first crank 521 and the first connecting rod 59. The other end of the first transition rod 522 is coaxially hinged to the third connecting rod 541 and the second transition rod 523. The other end of the second transition rod 523 is rotatably connected to the support base. Both the first driving shaft 51 and the second driving shaft 52 are installed on the upper support seat, and the upper support seat is integrally connected to the support base. The function of the two transition rods 523 is to arrange the first connecting rod 59 and the third connecting rod 541 at different heights to avoid interference during operation.

[0029] Only one of the first driving shaft 51 and the second driving shaft 52 needs to be driven by a motor, and the torque can be increased by adding a gearbox. Power is transmitted to each other through two meshing gears. The setting of the driving mechanism 5 simplifies the layout of the driving source, especially for Figure 1The situation of two diaphragm compression chambers. Compression is achieved through a linkage mechanism, resulting in more stable operation. Moreover, the two compression chambers are linked to move towards each other, generating a pulsating motion for the sludge.

[0030] In the middle of the main body 1, there are installed eddy stirring blades 6. There are multiple groups of eddy stirring blades 6 arranged along the height direction, and the overall shape is Figure 1 the conical structure shown. Each group is like the structure of Figure 4 . It mainly has a three-layer structure. The blades in the upper and lower layers are installed vertically, and the blades in the middle layer are laid horizontally. The blades in the upper and lower layers are used to displace the sludge, and the blades in the middle layer accelerate the gas and liquid. In addition, the eddy stirring blades 6 with this structure also act as drainage plates to promote the discharge of the liquid medium. In actual implementation, the blade density can be adjusted to improve the stirring and discharging effects.

[0031] At the bottom of the inner cavity of the main body 1, there are inclined and opposite flow guiding plates 7. Micro-flow holes are opened on the surface of the flow guiding plates 7 for the gas and liquid to flow out. At the bottom of the flow guiding plates 7, there is a lower outlet, and at the bottom of the lower outlet, there is a nozzle 10 to accelerate the fluid discharge. Referring to Figure 1 shown, the nozzle 10 includes two spray cavity structures separately arranged on the left and right. The spray cavity structure includes a large spray cavity 9 on the outside. A nozzle gap 8 is opened downward at a position near the middle of the large spray cavity 9. A blower is installed inside the inner shell of the large spray cavity 9, or a blower / air pump is externally connected through a pipeline. In actual application, the output end of the nozzle 10 is connected to an exhaust gas treatment device for purification. In addition, an additional return pipe is added and connected into the main body 1 to avoid generating a large negative pressure inside the main body 1. In addition, two one-way air valves are added in the diaphragm compression chambers on both sides, so that the exhaust gas in the main body 1 is discharged from both sides and is also connected to the output end of the nozzle 10.

[0032] During the use process, after putting the river dredging mud into the main body 1, a degrading agent is added, or oxygen is forced to be introduced. The degrading agent can adopt cationic amide PAM, degreasing agent, etc. to improve the solid-liquid separation efficiency. Forced oxygen introduction can promote sludge oxidation and deodorization, and increasing the air pressure can also achieve the effect of promoting discharge.

[0033] Through the pulsating compression and surging of the diaphragm compression chamber 2, and after the stirring of the eddy stirring blades 6, the water and exhaust gas contained in the river dredging mud are output through the flow guiding plates 7 and are accelerated for output under the action of the nozzle (10). During this process, the stirring blades work, cooperating with the pulsating motion of the diaphragm compression chamber. The sludge at the bottom surges to both sides, the large amount of sludge at the bottom is displaced, and a large amount of gas and water flow out at the inclined flow guiding plates 7.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A river dredging mud solidification device, characterized in that, It includes a main body (1), at least one side of the main body (1) is provided with a diaphragm compression chamber (2), the diaphragm compression chamber (2) and the main body (1) are softly connected by a diaphragm (3), a spring (4) is connected between the diaphragm compression chamber (2) and the side of the main body (1), and a driving mechanism (5) is connected to the end of the diaphragm compression chamber (2) far away from the main body (1), and the driving mechanism (5) is used to reciprocally push the diaphragm compression chamber (2) to displace laterally; An eddy current stirring blade (6) is installed in the middle of the main body (1), and the eddy current stirring blade (6) has a three-layer structure. The blades of the upper and lower layers are vertically installed, and the blades of the middle layer are horizontally laid; At the bottom of the inner cavity of the main body (1), inclined and opposite flow guide plates (7) are provided. Microfluidic holes are opened on the surface of the flow guide plates (7) for gas and liquid to flow out. A lower outlet is provided at the bottom of the flow guide plates (7), and a nozzle (10) is provided at the bottom of the lower outlet to accelerate the discharge of the fluid.

2. The solidification device for river dredging mud according to claim 1, characterized in that, Two diaphragm compression chambers (2) are provided, and they are symmetrically distributed on both sides of the main body (1). The driving mechanism (5) synchronously drives the two diaphragm compression chambers (2) to move towards each other.

3. The solidification device for river dredging mud according to claim 1, characterized in that, The driving mechanism (5) includes a first driving shaft (51) and a second driving shaft (52). Driving gears are fixedly connected to both the first driving shaft (51) and the second driving shaft (52). The two driving gears mesh with each other. The first driving shaft (51) is connected to a first sliding shaft (56) through a first crank and connecting rod mechanism. The second driving shaft (52) is connected to a second sliding shaft (57) through a second crank and connecting rod mechanism. And the second sliding shaft (57) has a hollow structure. The first sliding shaft (56) passes through the second sliding shaft (57) and enters the curing device. The first sliding shaft (56) and the second sliding shaft (57) are respectively connected to a sliding frame (58), and the two sliding frames (58) are respectively installed in the left and right diaphragm compression chambers (2).

4. A river dredging mud solidification device according to claim 2, characterized in that, At the bottom of both the first driving shaft (51) and the second driving shaft (52), a first crank (521) is connected. One end of the first crank (521) is hinged to a first connecting rod (59). One end of the first connecting rod (59) is hinged to a second connecting rod (53). The second connecting rod (53) has three connecting ends. Its left and right connecting ends are respectively connected to the first connecting rods (59) connected to the first driving shaft (51) and the second driving shaft (52), and its middle connecting end is hinged to the end of the first sliding shaft (56); The other end of the first connecting rod (59) is hinged to a third connecting rod (541). One end of the third connecting rod is hinged to an extension frame (54) on the side of the second sliding shaft (57). Extension frames are provided on both sides of the second sliding shaft (57) and are respectively connected to the third connecting rods (541) connected from the first driving shaft (51) and the second driving shaft (52).

5. The solidification device for river dredging mud according to claim 4, characterized in that, The drive mechanism (5) further includes a first transition rod (522) and a second transition rod (523). One end of the first transition rod (522) is coaxially hinged to the first crank (521) and the first connecting rod (59), and the other end of the first transition rod (522) is coaxially hinged to the third connecting rod (541) and the second transition rod (523). The other end of the second transition rod (523) is rotatably connected to the support base. The first drive shaft (51) and the second drive shaft (52) are both installed on the upper support seat, and the upper support seat is integrally connected to the support base.

6. A river dredging mud solidification device according to claim 1, characterized in that, The nozzle (10) includes two spray chamber structures arranged separately on the left and right. The spray chamber structure includes a large spray chamber (9) on the outside, and a nozzle gap (8) is provided downward at a position near the middle of the large spray chamber (9).

7. A river channel dredged mud solidification process, characterized in that, An in-river dredged mud solidification device as claimed in any one of claims 1-6 is adopted, and the following steps are included: after the in-river dredged mud is put into the main body (1), a degrading agent is added, and after pulsed compression by the diaphragm compression chamber (2) and stirring by the eddy stirring blades (6), the water and waste gas contained in the in-river dredged mud are output through the guide plate (7) and are accelerated for output under the action of the nozzle (10).

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