A sludge double mixing conveying device

Abstract

The utility model proposes a sludge double-mixing conveying device, comprising a mixing barrel, wherein a stirring paddle driven by a first driving device is arranged in the mixing barrel, the rotating axis of the stirring paddle is perpendicular to the ground, and a sludge inlet, a filler inlet and a curing agent inlet are arranged on the top of the mixing barrel; the utility model also comprises a sludge lifting device and a filler lifting device, the sludge lifting device comprises a sludge hopper and a sludge lifting cylinder, a sludge lifting screw is arranged in the sludge lifting cylinder, the filler lifting device comprises a filler hopper and a filler lifting cylinder, a filler lifting screw is arranged in the filler lifting cylinder, the sludge lifting screw and the filler lifting screw are driven by a servo motor or a stepping motor, the discharge port of the sludge lifting cylinder is connected to the sludge inlet, and the discharge port of the filler lifting cylinder is connected to the filler inlet; the utility model has the advantages of being able to control the mixing ratio of sludge and filler according to the humidity of the sludge, and stirring and mixing the curing agent into the sludge, thereby outputting sludge solidified soil with fixed humidity.

Description

Technical Field

[0001] The utility model relates to the field of sludge solidification construction equipment, in particular to a sludge double-mixing conveying device. Background Art

[0002] Usually, the biggest problem encountered in water conservancy, transportation, civil engineering and municipal engineering is the treatment of silt soft foundation. Soft soil foundation has the characteristics of complex mineral composition, high natural water content, large natural porosity, small permeability coefficient, high compressibility and low strength. Therefore, the bearing capacity of the foundation is low and the uneven settlement is large, which can easily cause the building to slide, collapse and tilt. There are different treatment methods for silt soft foundation at home and abroad, mainly including excavation and replacement method, composite foundation method, drainage consolidation method, chemical reinforcement method, etc. In recent years, chemical reinforcement method has been widely used because of its characteristics of short construction period, wide application range, simple construction, controllable consolidation shape and good durability.

[0003] Since the moisture content of sludge is often different in different environments, the proportion of industrial waste fly ash and slag added during ex-situ solidification mixing is often different, and traditional mixing equipment is difficult to accurately adjust the proportion in real time. Utility Model Content

[0004] Based on the above problems, the utility model aims to provide a silt double-mixing conveying device which can control the mixing ratio of silt and filler according to the silt humidity, stir and mix the silt and filler into a curing agent, thereby outputting silt-cured soil with fixed humidity.

[0005] In view of the above problems, the following technical solutions are provided: a sludge double-mixing conveying device, comprising a mixing barrel, a stirring paddle driven by a first driving device is provided in the mixing barrel, the rotation axis of the stirring paddle is perpendicular to the ground, and a sludge inlet, a filler inlet and a curing agent inlet are provided on the top of the mixing barrel; it also includes a sludge lifting device and a filler lifting device, the sludge lifting device includes a sludge hopper and a sludge lifting cylinder, a sludge lifting screw is provided in the sludge lifting cylinder, the filler lifting device includes a filler hopper and a filler lifting cylinder, a filler lifting screw is provided in the filler lifting cylinder, the sludge lifting screw and the filler lifting screw are driven by a servo motor or a stepper motor, the discharge port of the sludge lifting cylinder is connected to the sludge inlet, and the discharge port of the filler lifting cylinder is connected to the filler inlet; it also includes a discharge conveying device, the discharge conveying device includes a discharge cylinder located at the bottom of the mixing barrel, and the inner cavity is connected to the mixing barrel, the discharge cylinder is provided with a discharge screw driven by a second driving device, and a conveying outlet is provided at one end of the discharge cylinder.

[0006] In the above structure, the silt hopper is used to hold the collected silt, the filler hopper is used to hold the filler for filling and mixing, and the curing agent inlet is used to inject the curing agent; the rotation speed of the silt lifting screw and the filler lifting screw is controlled by a servo motor or a stepper motor, so as to accurately control the feeding amount of silt and filler, so as to adjust the mixing ratio of the two according to the humidity of the silt, ensure that the two can be accurately mixed with the curing agent and output silt solidified soil with a fixed humidity, so as to ensure the overall quality of the silt solidified soil and reasonably control the usage of the curing agent.

[0007] The utility model is further configured such that the sludge inlet and the filler inlet are arranged at intervals of 180 degrees in the circumferential direction of the top of the mixing barrel.

[0008] In the above structure, it is avoided that the sludge and filler are concentrated in the same position when being fed in, which causes the agitator to encounter increased resistance when passing through the area and causes uneven load.

[0009] The utility model is further configured such that the stirring paddle passes through the projection position of the sludge inlet, the projection position of the curing agent inlet, and the projection position of the filler inlet in sequence when rotating.

[0010] In the above structure, the curing agent is first contacted with the sludge, which prevents the filler from contacting the curing agent at the first time and capturing and adhering too much curing agent, thereby increasing the amount of curing agent used.

[0011] The utility model is further configured such that the distance between the curing agent inlet and the filler inlet is greater than the distance between the curing agent inlet and the sludge inlet.

[0012] In the above structure, the curing agent can be mixed first together with the sludge.

[0013] The utility model is further configured such that the sludge lifting cylinder and the filler lifting cylinder are both arranged obliquely, and the discharge ports of the sludge lifting cylinder and the filler lifting cylinder are both located at the top ends thereof and are opened downwards.

[0014] In the above structure, the height of the sludge hopper and the filler hopper can be effectively reduced, making it easier to load sludge and fillers.

[0015] The utility model is further configured that screens are provided at the hopper openings of the sludge hopper and the filler hopper.

[0016] In the above structure, large particles accidentally mixed into the sludge and fillers can be screened and isolated.

[0017] The utility model is further configured that the discharge barrel is provided with a feed port connected to the bottom of the mixing barrel; the bottom of the mixing barrel is V-shaped and the lowest point thereof is connected to the feed port.

[0018] In the above structure, the V-shaped bottom of the mixing barrel is conducive to gathering the mixed silt solidified soil and entering the discharge barrel.

[0019] The utility model is further configured such that the first driving device is located on the top of the mixing barrel.

[0020] In the above structure, interference with the discharge conveying device located at the bottom of the mixing barrel is avoided.

[0021] The utility model is further configured that the stirring paddle comprises a main shaft which is connected to the first driving device by power, and the main shaft is provided with a plurality of stirring blades which are spaced apart along the axial direction thereof.

[0022] In the above structure, stirring is performed in the entire height direction of the mixing barrel. The sludge and filler begin to mix at the upper layer of the mixing barrel and gradually move toward the bottom of the mixing barrel. The mixing becomes more uniform and is completed when it reaches the bottom of the mixing barrel and is sent out by the discharge conveying device.

[0023] The utility model is further configured such that the first driving device and the second driving device are motors.

[0024] In the above structure, the first driving device and the second driving device can also be driven by hydraulic motors.

[0025] The beneficial effects of the utility model are as follows: the sludge hopper is used to hold the collected sludge, the filler hopper is used to hold the filler for filling and mixing, and the curing agent inlet is used to inject the curing agent; the rotation speed of the sludge lifting screw and the filler lifting screw is controlled by a servo motor or a stepper motor, so as to accurately control the feeding amount of sludge and filler, so as to adjust the mixing ratio of the two according to the humidity of the sludge, ensure that the two can be accurately mixed with the curing agent and output silt solidified soil with a fixed humidity, so as to ensure the overall quality of the silt solidified soil, and reasonably control the usage of the curing agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model from a third viewing angle.

[0029] Meaning of the numbers in the figure: 10-mixing barrel; 11-first driving device; 12-stirring paddle; 121-main shaft; 122-stirring blade; 13-sludge inlet; 14-filler inlet; 15-curing agent inlet; 20-sludge lifting device; 21-sludge hopper; 22-sludge lifting cylinder; 30-filler lifting device; 31-filler hopper; 32-filler lifting cylinder; 40-discharging conveying device; 41-discharging cylinder; 42-second driving device; 43-discharging screw; 44-conveying outlet; 45-feeding port; 50-screen. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] refer to Figures 1 to 3 ,like Figures 1 to 3 The sludge double-mixing conveying device shown in the figure comprises a mixing barrel 10, wherein a stirring paddle 12 driven by a first driving device 11 is arranged in the mixing barrel 10, wherein the rotation axis of the stirring paddle 12 is perpendicular to the ground, and a sludge inlet 13, a filler inlet 14 and a curing agent inlet 15 are arranged on the top of the mixing barrel 10; the sludge lifting device 20 and a filler lifting device 30 are also included, wherein the sludge lifting device 20 comprises a sludge hopper 21 and a sludge lifting cylinder 22, wherein a sludge lifting screw (existing technology, not shown in the figure) is arranged in the sludge lifting cylinder 22, wherein the filler lifting device 30 comprises a filler hopper 31 and a filler lifting cylinder 32, wherein a There is a filler lifting screw (prior art, not shown in the figure), the sludge lifting screw (prior art, not shown in the figure) and the filler lifting screw (prior art, not shown in the figure) are driven by a servo motor or a stepper motor, the discharge port of the sludge lifting cylinder 22 is connected to the sludge inlet 13, and the discharge port of the filler lifting cylinder 32 is connected to the filler inlet 14; it also includes a discharge conveying device 40, the discharge conveying device 40 includes a discharge barrel 41 located at the bottom of the mixing barrel 10, and the inner cavity is connected to the mixing barrel 10, the discharge barrel 41 is provided with a discharge screw 43 driven by a second drive device 42, and one end of the discharge barrel 41 is provided with a conveying outlet 44.

[0032] In the above structure, the sludge hopper 21 is used to hold the collected sludge, the filler hopper 31 is used to hold the filler for filling and mixing, and the curing agent inlet 15 is used to inject the curing agent; the rotation speed of the sludge lifting screw (existing technology, not shown in the figure) and the filler lifting screw (existing technology, not shown in the figure) are controlled by a servo motor or a stepper motor, so as to accurately control the feeding amount of sludge and filler, so as to adjust the mixing ratio of the two according to the humidity of the sludge, ensure that the two can be accurately mixed with the curing agent and output silt solidified soil with a fixed humidity, so as to ensure the overall quality of the silt solidified soil and reasonably control the usage of the curing agent.

[0033] In this embodiment, the sludge inlet 13 and the filler inlet 14 are arranged at intervals of 180 degrees in the circumferential direction of the top of the mixing barrel 10 .

[0034] In the above structure, it is avoided that the sludge and filler are concentrated in the same position when being fed in, which causes the agitator 12 to encounter increased resistance when passing through the area, thus causing uneven load.

[0035] In this embodiment, the stirring paddle 12 passes through the projection position of the sludge inlet 13 , the projection position of the curing agent inlet 15 , and the projection position of the filler inlet 14 in sequence when rotating.

[0036] In the above structure, the curing agent is first contacted with the sludge, which prevents the filler from contacting the curing agent at the first time and capturing and adhering too much curing agent, thereby increasing the amount of curing agent used.

[0037] In this embodiment, the distance between the curing agent inlet 15 and the filler inlet 14 is greater than the distance between the curing agent inlet 15 and the sludge inlet 13 .

[0038] In the above structure, the curing agent can be mixed first together with the sludge.

[0039] In this embodiment, the sludge lifting cylinder 22 and the filler lifting cylinder 32 are both arranged at an angle, and the discharge ports of the sludge lifting cylinder 22 and the filler lifting cylinder 32 are both located at the top and open downward.

[0040] In the above structure, the height of the sludge hopper 21 and the filler hopper 31 can be effectively lowered, making it easier to load sludge and fillers.

[0041] In this embodiment, a screen 50 is provided at the hopper opening of the sludge hopper 21 and the filler hopper 31 .

[0042] In the above structure, large particles accidentally mixed into the sludge and fillers can be screened and isolated.

[0043] In this embodiment, the discharge barrel 41 is provided with a feed port 45 connected to the bottom of the mixing barrel 10 ; the bottom of the mixing barrel 10 is V-shaped and the lowest point thereof is connected to the feed port 45 .

[0044] In the above structure, the bottom of the mixing barrel 10 is V-shaped, which is conducive to gathering the mixed silt solidified soil and entering the discharge barrel 41.

[0045] In this embodiment, the first driving device 11 is located on the top of the mixing barrel 10 .

[0046] In the above structure, interference with the discharge conveying device 40 located at the bottom of the mixing barrel 10 is avoided.

[0047] In this embodiment, the stirring paddle 12 includes a main shaft 121 that is dynamically connected to the first driving device 11 , and the main shaft 121 is provided with a plurality of stirring blades 122 that are spaced apart along the axial direction thereof.

[0048] In the above structure, stirring is performed in the entire height direction of the mixing barrel 10. The sludge and filler begin to mix at the upper layer of the mixing barrel 10 and gradually move toward the bottom of the mixing barrel 10. The mixing becomes more uniform and is completed when it reaches the bottom of the mixing barrel 10 and is sent out by the discharge conveying device 40.

[0049] In this embodiment, the first driving device 11 and the second driving device 42 are motors.

[0050] In the above structure, the first driving device 11 and the second driving device 42 can also be driven by hydraulic motors.

[0051] The beneficial effects of the utility model are as follows: the sludge hopper 21 is used to hold the collected sludge, the filler hopper 31 is used to hold the filler for filling and mixing, and the curing agent inlet 15 is used to inject the curing agent; the rotation speed of the sludge lifting screw (existing technology, not shown in the figure) and the filler lifting screw (existing technology, not shown in the figure) are controlled by a servo motor or a stepper motor, so as to accurately control the feeding amount of sludge and filler, so as to adjust the mixing ratio of the two according to the humidity of the sludge, ensure that the two can be accurately mixed with the curing agent and output sludge solidified soil with a fixed humidity, so as to ensure the overall quality of the sludge solidified soil, and reasonably control the usage of the curing agent.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A sludge double-mixing conveying device, comprising a mixing barrel, wherein a stirring paddle driven by a first driving device is arranged in the mixing barrel, and the rotation axis of the stirring paddle is perpendicular to the ground, characterized in that: The top of the mixing barrel is provided with a sludge inlet, a filler inlet and a curing agent inlet; it also includes a sludge lifting device and a filler lifting device, the sludge lifting device includes a sludge hopper and a sludge lifting cylinder, a sludge lifting screw is provided in the sludge lifting cylinder, the filler lifting device includes a filler hopper and a filler lifting cylinder, a filler lifting screw is provided in the filler lifting cylinder, the sludge lifting screw and the filler lifting screw are driven by a servo motor or a stepper motor, the discharge port of the sludge lifting cylinder is connected to the sludge inlet, and the discharge port of the filler lifting cylinder is connected to the filler inlet; it also includes a discharge conveying device, the discharge conveying device includes a discharge barrel located at the bottom of the mixing barrel, and the inner cavity is connected to the mixing barrel, the discharge barrel is provided with a discharge screw driven by a second drive device, and a conveying outlet is provided at one end of the discharge barrel.

2. A sludge double mixing conveying device according to claim 1, characterized in that: The sludge inlet and the filler inlet are arranged at intervals of 180 degrees in the circumferential direction of the top of the mixing barrel.

3. A sludge double mixing conveying device according to claim 1, characterized in that: The stirring paddle passes through the projection position of the sludge inlet, the projection position of the curing agent inlet, and the projection position of the filler inlet in sequence when rotating.

4. A sludge double mixing conveying device according to claim 3, characterized in that: The distance between the curing agent inlet and the filler inlet is greater than the distance between the curing agent inlet and the sludge inlet.

5. A sludge double mixing conveying device according to claim 1, characterized in that: The sludge lifting cylinder and the filler lifting cylinder are both arranged obliquely, and the discharge ports of the sludge lifting cylinder and the filler lifting cylinder are both located at the top ends thereof and are opened downwards.

6. A sludge double mixing conveying device according to claim 1, characterized in that: Screens are provided at the hopper openings of the sludge hopper and the filler hopper.

7. A sludge double mixing conveying device according to claim 1, characterized in that: The discharge barrel is provided with a feed port connected to the bottom of the mixing barrel; the bottom of the mixing barrel is V-shaped and the lowest point thereof is connected to the feed port.

8. A sludge double mixing conveying device according to claim 1, characterized in that: The first driving device is located on the top of the mixing barrel.

9. A sludge double-mixing conveying device according to claim 1 or 8, characterized in that: The stirring paddle comprises a main shaft which is connected to the first driving device by power, and the main shaft is provided with a plurality of stirring blades which are arranged at intervals along the axial direction thereof.

10. A sludge double-mixing conveying device according to claim 1, characterized in that: The first driving device and the second driving device are motors.

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