Conveying device for sludge drying

Abstract

The utility model relates to the technical field of sludge treatment, in particular to a conveying device for sludge drying, which comprises a conveyor, a dryer mounted on the conveyor, a rotating sleeve connected to the conveyor, a plurality of transmission shafts rotatably connected to the middle of the conveyor, and a plurality of stirring blades connected to the transmission shafts. One end of the transmission shaft penetrates through the conveyor and is in sliding connection with flower arrangement shafts, the flower arrangement shafts are rotationally connected to the rotating sleeves, belt wheels are connected to the flower arrangement shafts, a belt is arranged between the belt wheels on every two adjacent flower arrangement shafts in a sleeved mode, a motor is installed on the conveyor, and an output shaft of the motor is connected with one flower arrangement shaft. A shaking assembly for shaking the stirring blades is arranged on the transmission shaft. The belt wheel and the belt are driven by the motor, so that all the flower arrangement shafts and the transmission shaft rotate synchronously, and full contact between sludge and hot air in the dryer is promoted in cooperation with a plurality of stirring blades on the transmission shaft, so that uniform heating of the sludge is achieved, and the drying efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment, in particular to a conveying device for sludge drying. Background Art

[0002] Sludge, an inevitable byproduct of industrial production and municipal sewage treatment, contains large amounts of water, organic matter, inorganic matter, and possible impurities such as heavy metals. It is bulky, has a high water content, and is easily corrupted and odorous. Untreated sludge not only occupies a large amount of land resources but can also cause secondary pollution to the environment. Therefore, effective sludge treatment, especially reducing its water content through drying technology, is of great significance for achieving sludge reduction, stabilization, harmlessness, and resource utilization. Dried sludge not only significantly reduces its volume, making it easier to transport and store, but can also be used as agricultural fertilizer, soil conditioner, building material, and other raw materials for a variety of purposes, thus achieving resource recycling.

[0003] The mainstream sludge drying equipment currently on the market primarily utilizes hot air drying or direct drying oven heating. Hot air drying introduces high-temperature air into direct contact with the sludge, accelerating the evaporation of moisture from the sludge through heat conduction and convection. Direct drying oven heating, on the other hand, places the sludge in a sealed drying chamber and uses heating elements to raise the temperature, encouraging the evaporation of moisture from the sludge into the external environment. The core goal of both methods is to effectively remove moisture from the sludge, thereby reducing its weight and facilitating subsequent processing.

[0004] Due to its inherent stickiness and agglomeration, sludge tends to accumulate during the drying process, forming a thick sludge layer. This not only leads to low drying efficiency, as heat has difficulty evenly penetrating the entire sludge pile, resulting in inadequate drying of the sludge at the bottom layer, but also, even if the upper layer of sludge is easier to dry due to its proximity to the heat source, to ensure the overall drying effect, it is often necessary to extend the drying time or increase the drying temperature. This not only increases energy consumption but can also result in a "half-cooked" phenomenon where the sludge surface is over-dried while the interior still contains a high level of moisture. Utility Model Content

[0005] In order to overcome the shortcomings of low drying efficiency and uneven drying, the utility model provides a conveying device for rapid and uniform drying of sludge.

[0006] A conveying device for drying sludge, comprising a conveyor, a dryer installed on the conveyor, a rotating sleeve connected to the conveyor, multiple transmission shafts rotatably connected in the middle of the conveyor, multiple stirring blades connected to the transmission shaft, one end of the transmission shaft passes through the conveyor and is slidably connected to a flower inserting shaft, the flower inserting shaft is rotatably connected to the rotating sleeve, a pulley is connected to the flower inserting shaft, a belt is provided between the pulleys on two adjacent flower inserting shafts, a motor is installed on the conveyor, the output shaft of the motor is connected to one of the flower inserting shafts, and a shaking component for shaking the stirring blades is provided on the transmission shaft.

[0007] Furthermore, the shaking assembly includes a screw sleeve and a reciprocating screw, the reciprocating screw is arranged in the middle of the transmission shaft, the screw sleeve is connected to the conveyor, and the screw sleeve is extruded and fitted with the reciprocating screw.

[0008] Furthermore, a limiting member for limiting the thickness of the sludge is connected to the front end of the conveyor.

[0009] Furthermore, the front and rear ends of the dryer are connected with heat insulation plates for reducing heat loss.

[0010] Furthermore, a scraper is connected to the rear end of the conveyor, and the front end of the scraper is in contact with the conveyor belt of the conveyor.

[0011] Furthermore, a dustproof net is connected to the rear end of the conveyor.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By driving the pulley and belt through the motor, all the flower shafts and the transmission shafts connected to them can rotate synchronously, and cooperate with the rotation of multiple stirring blades installed on the transmission shaft to promote sufficient contact between the sludge and the hot air in the dryer, thereby achieving uniform heating of the sludge and significantly improving the drying efficiency.

[0014] Through the reciprocating screw and screw sleeve, the drive shaft can produce a slight shaking effect, which in turn drives the stirring blades to shake while rotating, preventing sludge from accumulating on the stirring blades and the drive shaft, and ensuring the stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0017] Figure 3 It is a three-dimensional structural sectional view of the screw sleeve and the rotating sleeve of the utility model.

[0018] Figure 4 This is an exploded view of part of the structure of the utility model.

[0019] Figure numbers: 1_conveyor, 101_dryer, 2_motor, 3_pulley, 4_belt, 5_drive shaft, 6_stirring blade, 7_screw sleeve, 8_reciprocating screw, 9_flower inserting shaft, 91_rotating sleeve, 10_limiter, 11_heat insulation board, 12_scraper, 13_dustproof net. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that any directional terms such as "up," "down," "left," "right," "front," "back," "inside," and "outside" that appear or will appear in this document are based solely on the accompanying drawings and are not intended to limit the present invention.

[0021] Example: A conveying device for sludge drying, such as Figure 1-Figure 4 As shown, it includes a conveyor 1, a dryer 101, a motor 2, a pulley 3, a belt 4, a transmission shaft 5, a stirring blade 6, a flower arrangement shaft 9, a rotating sleeve 91 and a shaking assembly. The conveyor 1 is equipped with a dryer 101. The heat generated by the equipment in the factory can be transported to the dryer 101 through gas. At the same time, the dryer 101 can also actively add internal air to dry the sludge. A plurality of rotating sleeves 91 are connected to the conveyor 1. Three transmission shafts 5 are rotatably connected in the middle of the conveyor 1. The transmission shaft 5 is located in the dryer 101. Eight stirring blades 6 are connected to each transmission shaft 5. One end of the transmission shaft 5 passes through the conveyor 1 and is slidably connected to the flower arrangement shaft 9. The flower arrangement shaft 9 is rotatably connected to the rotating sleeve 91. The flower arrangement shaft 9 is connected to a pulley 3. A belt 4 is sleeved between the pulleys 3 on two adjacent flower arrangement shafts 9. The conveyor 1 is equipped with a motor 2. The output shaft of the motor 2 is connected to one of the flower arrangement shafts 9. A shaking assembly for shaking the stirring blades 6 is provided on the transmission shaft 5.

[0022] like Figure 3 and Figure 4 As shown, the shaking assembly includes a screw sleeve 7 and a reciprocating screw 8. A section of the transmission shaft 5 is cut out to be set as the reciprocating screw 8. The screw sleeve 7 is connected to the conveyor 1, and the screw sleeve 7 is squeezed and fitted with the reciprocating screw 8.

[0023] After the staff dumps the sludge onto the conveyor belt of the conveyor 1, the entire drying process starts immediately. The motor 2 serves as the power source. After starting the motor 2, through the transmission effect of the belt 4 and the pulley 3, all the flower-inserting shafts 9 and the transmission shaft 5 connected thereto begin to rotate synchronously, so that the multiple stirring blades 6 installed on the transmission shaft 5 also rotate, effectively stirring the sludge on the conveyor belt. The stirring blades 6 can not only break the agglomeration state of the sludge, but also promote the full contact between the sludge and the hot air released by the dryer 101, ensuring that the sludge can be evenly heated, thereby improving the drying efficiency;

[0024] At the same time, when the transmission shaft 5 rotates, the reciprocating screw 8 also rotates accordingly. However, due to the guiding effect of the screw sleeve 7 on the reciprocating screw 8, when the reciprocating screw 8 rotates, its relative position in the screw sleeve 7 will change, thereby producing a left and right movement effect. This left and right movement causes the transmission shaft 5 to shake slightly, and then the stirring blades 6 produce a shaking effect while rotating, which helps to shake off the sludge attached to the stirring blades 6 and the transmission shaft 5, prevent excessive accumulation of sludge, and further improve the drying efficiency.

[0025] like Figure 1 and Figure 2 As shown, a limiting member 10 is also included. The front end of the conveyor 1 is connected to the limiting member 10 for limiting the thickness of the sludge, and the bottom of the limiting member 10 is connected to multiple vertical rods.

[0026] The distance between the limiter 10 and the conveyor belt is fixed, which is used to limit the thickness of the sludge passing through. The limiter 10 can not only effectively control the loading amount of the sludge and avoid the excessively thick sludge layer affecting the drying effect, but is also equipped with a vertical rod to intercept weeds, tree roots, ropes and other impurities in the sludge to prevent these impurities from entangled in the stirring blades 6 and affecting the normal operation of the equipment.

[0027] like Figure 1 and Figure 2 As shown, a heat insulation plate 11 is also included. The front and rear ends of the dryer 101 are connected with the heat insulation plate 11 for reducing heat loss.

[0028] The presence of the heat insulation board 11 effectively blocks the loss of heat, so that the hot air released by the dryer 101 can more fully contact the sludge, thereby improving the utilization rate of the heat inside the dryer 101 and thus improving the drying effect.

[0029] like Figure 1 and Figure 2 As shown, a scraper 12 is also included. The rear end of the conveyor 1 is connected to the scraper 12, and the front end of the scraper 12 is in contact with the conveyor belt of the conveyor 1.

[0030] The front end of the scraper 12 is in close contact with the conveyor belt of the conveyor 1. When the sludge is dried and reaches the end of the conveyor 1, the scraper 12 can easily scrape off the sludge attached to the conveyor belt, ensuring smooth unloading of the sludge.

[0031] like Figure 1 and Figure 2 As shown, a dust-proof net 13 is also included, and the rear end of the conveyor 1 is connected to the dust-proof net 13.

[0032] At the same time, in order to prevent the dust generated during the sludge shedding process from escaping into the environment, a dustproof net 13 is specially provided at the rear end of the conveyor 1 to effectively intercept and collect the dust and keep the working environment clean.

[0033] After the sludge is dumped onto the conveyor belt, it gradually enters the interior of the device as the conveyor belt runs. At the same time, the limiter 10 controls the thickness of the sludge and intercepts impurities. The dryer 101 releases hot air to preheat and preliminarily dry the sludge. At the same time, the stirring blades 6 rotate to break up the sludge agglomerations, promote full contact between the hot air and the sludge, and ensure uniform heating. The shaking assembly on the drive shaft 5 produces a shaking effect on the stirring blades 6 through the coordinated work of the reciprocating screw 8 and the screw sleeve 7, shaking off the attached sludge to prevent accumulation. When the sludge is dried and reaches the end with the conveyor belt, the scraper 12 easily scrapes off the sludge attached to the conveyor belt, realizing the smooth unloading of the sludge. The dustproof net 13 effectively intercepts and collects the dust generated by the fallen sludge to keep the environment clean.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A conveying device for sludge drying, characterized in that: The invention comprises a conveyor (1), a dryer (101) is installed on the conveyor (1), a rotating sleeve (91) is connected to the conveyor (1), a plurality of transmission shafts (5) are rotatably connected in the middle of the conveyor (1), a plurality of stirring blades (6) are connected to the transmission shaft (5), one end of the transmission shaft (5) passes through the conveyor (1) and is slidably connected to a flower inserting shaft (9), the flower inserting shaft (9) is rotatably connected to the rotating sleeve (91), a pulley (3) is connected to the flower inserting shaft (9), a belt (4) is sleeved between the pulleys (3) on two adjacent flower inserting shafts (9), a motor (2) is installed on the conveyor (1), an output shaft of the motor (2) is connected to one of the flower inserting shafts (9), and a shaking component for shaking the stirring blades (6) is provided on the transmission shaft (5).

2. A sludge drying conveying device according to claim 1, characterized in that: The shaking assembly includes a screw sleeve (7) and a reciprocating screw (8), the reciprocating screw (8) is arranged in the middle of the transmission shaft (5), the screw sleeve (7) is connected to the conveyor (1), and the screw sleeve (7) and the reciprocating screw (8) are extruded and matched.

3. A sludge drying conveying device according to claim 2, characterized in that: The front end of the conveyor (1) is connected to a limiting member (10) for limiting the thickness of the sludge.

4. A sludge drying conveying device according to claim 3, characterized in that: The front and rear ends of the dryer (101) are connected to heat insulation plates (11) for reducing heat loss.

5. The sludge drying conveying device according to claim 4, characterized in that: The rear end of the conveyor (1) is connected to a scraper (12), and the front end of the scraper (12) is in contact with the conveyor belt of the conveyor (1).

6. The sludge drying conveying device according to claim 5, characterized in that: The rear end of the conveyor (1) is connected to a dustproof net (13).

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