CN220918955U - Sludge treatment device - Google Patents

Abstract

The utility model discloses a sludge treatment device which comprises a lime storage bin, a lime discharging hopper, a mixer and a stirring pool, wherein lime is conveyed between the lime storage bin and the lime discharging hopper through a first screw conveyor, lime is conveyed between the lime discharging hopper and the mixer through a second screw conveyor, a feed inlet of the mixer is connected with a sludge inlet pipe, the mixer is used for mixing lime and sludge, a discharge outlet of the mixer is communicated with the stirring pool, and the stirring pool is internally provided with the mixer. According to the device, the first screw conveyor and the second screw conveyor are arranged, so that two-stage lime material conveying is realized, and caking and non-uniformity during lime material discharging are reduced; the lime feeding amount is controlled by controlling the start-stop and conveying speed of the second spiral conveyor, so that the lime feeding proportion can be controlled more accurately, and the influence of factors such as temperature is reduced; through setting up blender and stirring pond, realize blender and stirring pond two-stage mixing for mud and lime mix more evenly.

Description

Sludge treatment device

Technical Field

The utility model relates to the technical field of sludge treatment, in particular to a sludge treatment device.

Background

In actual operation, in order to reduce the water content, a lime alkaline hydrolysis process is adopted, namely, in lime feeding, a quantitative feeding mode is adopted after a hopper is weighed, and the lime is added into a mud storage tank to be mixed with anaerobic mud, however, a weight sensor for weighing the hopper is greatly affected by air temperature, and the sensor is more sensitive at low temperature, so that the blanking weight is unstable, the fluctuation is great, and the lime feeding proportion is inaccurate; meanwhile, the hopper is used for weighing and discharging, so that lime is easy to agglomerate, the discharging is uneven, and the stirring effect is greatly influenced; and lime is not fully mixed in the whole operation process, so that a large amount of lime slurry is deposited at the bottom of the mud storage tank, a large amount of lime white spots exist in mud cakes extruded by the plate frame machine, and the subsequent treatment difficulty is high.

Disclosure of utility model

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a sludge treatment device which is uniform in lime discharging and can accurately control the lime feeding proportion and the mixing uniformity.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The utility model provides a sludge treatment device, includes lime storage bin, lime hopper, blender and stirring pond under, lime is carried through first screw conveyer between lime storage bin and the lime hopper under, carry lime through the second screw conveyer between lime hopper under and the blender, the feed inlet of blender is connected with into mud pipe, the blender is used for mixing lime and mud, the discharge gate and the stirring pond intercommunication of blender, be equipped with the agitator in the stirring pond.

As a further improvement of the above technical scheme:

The second screw conveyor is a variable frequency conveyor.

The lower part of the lime storage bin is provided with a first vibrator.

And a second vibrator is arranged at the lower part of the lime discharging hopper.

And a sensor component for measuring the ash level is arranged in the lime discharging hopper.

The sensor assembly includes a low sensor, a mid sensor, and a high sensor.

The sensor assembly is electrically or signally connected to the first screw conveyor, the second screw conveyor and the second vibrator.

The mixer is internally provided with a spiral diversion trench.

The top of the lime storage bin is provided with a dust remover and a breather valve.

And the lime storage bin is provided with a lime feeding pipe.

Compared with the prior art, the utility model has the advantages that:

According to the sludge treatment device disclosed by the utility model, the two-stage conveying of lime materials is realized by arranging the first screw conveyor and the second screw conveyor, the lime materials are pretreated, and caking and non-uniformity during lime discharging of the lime materials are reduced; the lime feeding amount is controlled by controlling the start-stop and conveying speed of the second screw conveyor, so that the lime feeding proportion can be controlled more accurately, the influence of factors such as temperature is reduced, the real-time mixing of lime and sludge is realized, and the problem of uneven mixing caused by the one-time lime feeding is avoided; through setting up blender and stirring pond, realize blender and stirring pond two-stage mixing for mud and lime mix more evenly. The device has the advantages of uniform lime discharging, accurate control of lime charging proportion and uniform mixing.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of the structure of the mixer in the present utility model.

The reference numerals in the drawings denote:

1. Lime storage bin; 11. an ash inlet pipe; 12. a first vibrator; 13. a dust remover; 14. a respiratory valve; 2. lime discharging hopper; 21. a sensor assembly; 211. a low level sensor; 212. a median sensor; 213. a high-level sensor; 22. a second vibrator; 3. a mixer; 31. a diversion trench; 4. a stirring pool; 41. a stirrer; 5. a first screw conveyor; 6. a second screw conveyor; 7. and a mud inlet pipe.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific examples.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

As shown in fig. 1 and 2, the sludge treatment device of the present embodiment includes a lime storage bin 1, a lime discharging hopper 2, a mixer 3 and a stirring tank 4, lime is conveyed between the lime storage bin 1 and the lime discharging hopper 2 by a first screw conveyor 5, lime is conveyed between the lime discharging hopper 2 and the mixer 3 by a second screw conveyor 6, a feed inlet of the mixer 3 is connected with a sludge inlet pipe 7, the mixer 3 is used for mixing lime and sludge, a discharge outlet of the mixer 3 is communicated with the stirring tank 4, and a stirrer 41 is arranged in the stirring tank 4.

In the operation process, lime materials stored in the lime storage bin 1 are conveyed into the lime discharging hopper 2 through the first screw conveyor 5, according to the actual required adding proportion, the lime materials in the lime discharging hopper 2 are quantitatively and regularly conveyed into the mixer 3 through the second screw conveyor 6, sludge enters from the sludge inlet pipe 7 and is primarily mixed with the lime materials in the mixer 3, and finally, the mixture is discharged into the stirring tank 4 and is stirred by the stirrer 41. According to the device, two-stage lime material conveying is realized by arranging the first screw conveyor 5 and the second screw conveyor 6, the lime material is pretreated, and caking and non-uniformity during lime material ash discharging are reduced; the lime feeding amount is controlled by controlling the start-stop and conveying speed of the second screw conveyor 6, so that the lime feeding proportion can be controlled more accurately, the influence of factors such as temperature is reduced, the real-time mixing of lime and sludge is realized, and the problem of uneven mixing caused by the one-time lime feeding is avoided; through setting up blender 3 and stirring pond 4, realize blender 3 and stirring pond 4 two-stage mixing for mud and lime mix more evenly. The device has the advantages of uniform lime discharging, accurate control of lime charging proportion and uniform mixing.

Further, in the present embodiment, the second screw conveyor 6 is a variable frequency conveyor. Lime material is conveyed by setting the second screw conveyor 6 as a variable-frequency conveying screw, the traditional weight feeding mode is changed into a speed ratio feeding mode, the required feeding proportion of the lime material is achieved according to the adjustment conveying frequency, the whole process is not affected by temperature, conveying is stable, lime material mixing conditions are visible, blocking lime is prevented from entering a mud storage tank, and auxiliary materials are wasted.

Further, in the present embodiment, the lower part of the lime storage bin 1 is provided with a first vibrator 12. Preferably, the lime storage bin 1 is a conical bin. Through setting up first vibrator 12, prevent that lime powder from being in the unable whereabouts of wall built-up state and causing "cavity" phenomenon in lime storage storehouse 1 department of buckling, and then avoid lime powder unable whereabouts of lime storage storehouse 1 department of buckling and take place the deposit, also can avoid lime powder accumulation in lime storage storehouse 1 department of buckling to remove the degree after a large amount of whereabouts in the twinkling of an eye, and then avoid the unloading inhomogeneous. Preferably, the first vibrator 12 is mounted on the lime storage bin 1 at a position spaced from the bottom third of the lime storage bin 1. The position which is one third away from the bottom of the lime storage bin 1 is near the bending position of the conical part of the lime storage bin 1, which is more beneficial to preventing the cavitation phenomenon.

Further, in the present embodiment, the lower part of the lime discharging hopper 2 is provided with a second vibrator 22. Is beneficial to the blanking of the lime blanking hopper 2 and prevents accumulation.

Further, in the present embodiment, a sensor assembly 21 for measuring the ash level is provided in the lime discharging hopper 2. According to the ash level of the lime discharging hopper 2 measured by the sensor assembly 21, the lime discharging hopper 2 is timely replenished with ash, and whether the situation of hardening and ash blocking exists can be analyzed according to the ash level change situation, so that the automatic and stable operation of the system is realized.

Further, in the present embodiment, the sensor assembly 21 includes a low sensor 211, a medium sensor 212, and a high sensor 213. By arranging the high, medium and low three height sensors, the ash level in the lime discharging hopper 2 is monitored more accurately.

Further, in the present embodiment, the sensor assembly 21 is electrically or signally connected to the first screw conveyor 5, the second screw conveyor 6 and the second vibrator 22. The ash level height that accessible sensor assembly 21 monitored, the charging of control first screw conveyer 5 and the unloading of second screw conveyer 6, labour saving and time saving more. When the ash level is low, the first screw conveyor 5 is controlled to start, the lime discharging hopper 2 is supplemented with ash, and the second vibrator 22 is controlled to start and assist in discharging ash; when the ash level is high, the first screw conveyor 5 is controlled to stop, and ash supplementing is stopped. Meanwhile, in the ash discharging process of the second screw conveyor 6, whether the condition of hardening and ash blocking exists can be analyzed according to the ash position change condition, so that the automatic and stable operation of the system is realized.

Further, in the present embodiment, a spiral diversion trench 31 is provided inside the mixer 3. The diversion trench 31 increases the distance of the mixing reaction of lime and sludge, improves the mixing effect, and reduces the volume of the device. Lime from the second screw conveyor 6 and sludge from the sludge inlet pipe 7 are simultaneously added into the mixer 3. Preferably, the mixer 3 is an inverted round table, the inside of the mixer 3 is a circular inclined plane, the sludge forms rotational flow on the inner wall and forms primary mixing with lime on the inside, after passing through the diversion trench 31, the sludge flows out from the bottom and enters the stirring tank 4 to be stirred for the second time, a large amount of lime is prevented from being directly added into the stirring tank 4 in a lump, the stirring is uneven, and lime slurry is formed at the bottom of the tank.

Further, in the present embodiment, the top of the lime storage bin 1 is provided with a dust remover 13 and a breather valve 14. Preferably, the dust remover 13 is a cloth bag dust remover, so that dust, dust and fine particles can be removed, and the lime material is ensured to be clean; the breather valve 14 is used to control the expiratory pressure and the inhaled vacuum in the lime storage bin 1.

Further, in the present embodiment, the lime storage bin 1 is provided with a lime feeding pipe 11. The lime feeding pipe 11 is used for feeding lime into the lime storage bin 1 for storage.

While the utility model has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims (10)

1. A sludge treatment device, characterized in that: including lime storage storehouse (1), lime hopper (2), blender (3) and stirring pond (4), lime is carried through first screw conveyer (5) between lime storage storehouse (1) and lime hopper (2), lime is carried through second screw conveyer (6) between lime hopper (2) and the blender (3), the feed inlet of blender (3) is connected with into mud pipe (7), blender (3) are used for mixing lime and mud, the discharge gate and the stirring pond (4) intercommunication of blender (3), be equipped with agitator (41) in stirring pond (4).

2. The sludge treatment apparatus according to claim 1, wherein: the second spiral conveyor (6) is a variable frequency conveyor.

3. The sludge treatment apparatus according to claim 1, wherein: the lower part of the lime storage bin (1) is provided with a first vibrator (12).

4. The sludge treatment apparatus according to claim 1, wherein: the lower part of the lime discharging hopper (2) is provided with a second vibrator (22).

5. The sludge treatment apparatus as claimed in claim 4, wherein: a sensor assembly (21) for measuring the ash level is arranged in the lime discharging hopper (2).

6. The sludge treatment apparatus as claimed in claim 5, wherein: the sensor assembly (21) includes a low sensor (211), a medium sensor (212), and a high sensor (213).

7. The sludge treatment apparatus as claimed in claim 5, wherein: the sensor assembly (21) is electrically or signally connected to the first screw conveyor (5), the second screw conveyor (6) and the second vibrator (22).

8. The sludge treatment apparatus as claimed in any one of claims 1 to 7, wherein: the mixer (3) is internally provided with a spiral diversion trench (31).

9. The sludge treatment apparatus as claimed in any one of claims 1 to 7, wherein: the top of the lime storage bin (1) is provided with a dust remover (13) and a breather valve (14).

10. The sludge treatment apparatus as claimed in any one of claims 1 to 7, wherein: an ash inlet pipe (11) is arranged on the lime storage bin (1).