CN-121974088-A - Feed device of feed bin of sludge drying machine

Abstract

The invention discloses a feed bin feeding device of a sludge drier, which comprises a frame, a driving mechanism, a transmission mechanism and a scraper conveying mechanism. The frame stretches across the feed bin top and arranges, and both ends are equipped with left blanking mouth and right blanking mouth. The driving mechanism is fixedly arranged in the middle of the frame, and the output shaft is connected with the transmission mechanism. The transmission mechanism comprises a driving sprocket, a driven sprocket and an annular chain. The scraping plates are fixed on the outer sides of the annular chains through connecting pieces and move along the closed tracks to convey sludge to blanking ports on two sides in the travel path and the return path respectively. The frame is internally provided with a conveying channel, and the bottom is provided with a guide plate. The driving mechanism drives the annular chain to run unidirectionally.

Inventors

• ZHANG WEI
• SHI CHEN
• XUE XIAOJIAN
• ZHANG SHUAI
• BAO YANG
• CAO SHASHA
• CHEN GUANHUI
• MA SHIKAI
• HE XIAOTIAN
• WANG YUFENG
• ZHENG TIANLONG
• LI GUANGHAO
• LIANG CHANGLONG
• WANG DANDAN
• MENG LE
• LI PENGFEI
• XU TAO

Assignees

• 中原环保股份有限公司

Dates

Publication Date

20260505

Application Date

20260302

Claims (9)

1. 1. The feed device of the sludge drier feed bin is characterized by comprising a frame (1), a driving mechanism (2), a transmission mechanism (3) and a scraper conveying mechanism (4), wherein the frame (1) is arranged across the top of the feed bin, and a left blanking port (5) and a right blanking port (6) are respectively arranged at two ends of the frame; The driving mechanism (2) is fixedly arranged in the middle of the frame (1), an output shaft of the driving mechanism is connected with the transmission mechanism (3), the transmission mechanism (3) comprises a driving chain wheel (7), a driven chain wheel (8) and an annular chain (9) encircling the driving chain wheel, the driving chain wheel (7) and the output shaft of the driving mechanism (2) are coaxially fixed, the driven chain wheel (8) is arranged at the end part of the frame (1) through a bearing seat, the scraper conveying mechanism (4) comprises a plurality of scrapers (10), and each scraper (10) is vertically fixed at the outer side of the annular chain (9) through a connecting piece (11); The scraper (10) moves along a closed track under the drive of the annular chain (9), wherein the closed track comprises a travel path positioned at an upper layer and a return path positioned at a lower layer, the travel path corresponds to the upper half part of the annular chain (9), the return path corresponds to the lower half part of the annular chain (9), each scraper (10) pushes sludge towards one end of the frame (1) in the travel path and pushes sludge towards the other end of the frame (1) in the return path, and a conveying channel is formed in the frame (1), wherein the travel path is accommodated in the upper space of the conveying channel, and the return path is accommodated in the lower space of the conveying channel; The sludge conveying device is characterized in that guide plates (20) are arranged at the bottoms of a travel path and a return path in the conveying channel, the guide plates (20) are in clearance fit with the bottoms of the scrapers (10), gate valves (31) are arranged on the guide plates (20) in the travel path, the discharge ends of the gate valves (31) are located on the guide plates (20) in the return path, and the driving mechanism (2) drives the annular chain (9) to run unidirectionally through the transmission mechanism (3) so that the scrapers (10) in the travel path convey sludge to the left blanking port (5), and meanwhile the scrapers (10) in the return path convey sludge to the right blanking port (6).
2. 2. The feeding device of the sludge dryer storage bin is characterized in that the scraping plate (10) comprises a plate body (12) and wing plates (13) on two sides, the plate body (12) is a rectangular steel plate, wear-resistant strips (14) are arranged at the bottom edge of the plate body, the wing plates (13) are formed by bending upwards from two sides of the plate body (12), and a material accommodating space is formed between the wing plates (13) and the plate body (12).
3. 3. The feeding device of the sludge dryer storage bin is characterized in that the connecting piece (11) comprises a chain link connecting block (15) and a bolt group (16), the chain link connecting block (15) is welded on an outer chain plate of the annular chain (9), and the bolt group (16) is used for tightly connecting the back of a plate body (12) of the scraper (10) with the chain link connecting block (15).
4. 4. The feeding device of the sludge dryer storage bin is characterized in that reinforcing ribs (30) are arranged on the surface of the plate body (12), the reinforcing ribs (30) are angle steel which is transversely arranged, one edge of each angle steel is welded with the plate body (12), the other edge of each angle steel faces the material feeding direction, and the reinforcing ribs (30) are distributed on the surface of the plate body (12) at equal intervals.
5. 5. The feeding device of the sludge dryer storage bin is characterized in that the frame (1) is formed by welding profile steel and comprises two main beams (17) and a plurality of cross braces (18), the main beams (17) are arranged in parallel, the cross braces (18) are vertically connected between the two main beams (17), a chain guide rail (19) is arranged on the inner side of each main beam (17), the chain guide rail (19) is U-shaped channel steel, an opening of the chain guide rail faces towards an annular chain (9), the annular chain (9) is embedded in a U-shaped groove of the chain guide rail (19), high-molecular wear-resistant strips are embedded in the U-shaped groove of the chain guide rail (19), the wear-resistant strips are fixed to the bottom of the groove through countersunk screws, and the wear-resistant strips are made of ultra-high-molecular-weight polyethylene.
6. 6. The feeding device of a sludge drier bin according to claim 5, wherein the guide plate (20) is fixedly arranged on the cross brace (18), and a wear-resistant lining plate is paved on the surface of the guide plate.
7. 7. The feeding device of the sludge dryer storage bin is characterized in that the driven sprocket (8) is mounted at the end of the frame (1) through a tensioning mechanism (24), the tensioning mechanism (24) comprises a sliding seat (25) and an adjusting bolt (26), the sliding seat (25) is connected with the frame (1) through a linear guide rail, the adjusting bolt (26) penetrates through an end plate of the frame (1) to push the sliding seat (25), and a bearing seat of the driven sprocket (8) is fixed on the sliding seat (25).
8. 8. The feed device of the sludge drier bin is characterized in that the frame (1) is respectively provided with a guide cover (27) at a left blanking port (5) and a right blanking port (6), the guide covers (27) are of funnel-shaped structures, an upper opening of each guide cover is communicated with a conveying channel, and a lower opening of each guide cover extends to the feed port of the bin.
9. 9. The feeding device of the sludge drier storage bin is characterized in that a sealing cover plate (28) is arranged at the top of the conveying channel, the sealing cover plate (28) is connected with the frame (1) through a hinge, a sealing adhesive tape is arranged between the sealing cover plate (28) and the frame (1), an observation window is formed in the sealing cover plate (28), and the observation window is formed by a transparent polycarbonate plate.

Description

Feed device of feed bin of sludge drying machine Technical Field The invention relates to the technical field of sludge material transportation, in particular to a feed bin feeding device of a sludge drying machine. Background Under the macroscopic background of modern urban process and industrialized development, the scale and treatment capacity of sewage treatment plants are continuously improved, and correspondingly, the sludge is taken as an inevitable product in the sewage treatment process, and the yield of the sludge is also increased. How to perform reduction, stabilization, harmless and recycling treatment on huge amounts of sludge has become an important subject facing the field of environmental protection. Sludge drying is used as a key technical link in a sludge disposal chain, the water content of sludge is obviously reduced through thermal action, and the sludge is converted into a drying material with stable properties and convenient transportation and subsequent utilization. At the end of the process flow, the high-temperature dried sludge is efficiently and uniformly conveyed and distributed in a large-scale bin for temporary storage, which is a necessary guarantee for ensuring continuous and stable operation of the whole drying system, so that the design and the performance of the bin feeding device are directly related to the production efficiency, the site environment and the reliability of automatic control. In order to realize feeding of the dried sludge into the bins in different directions along the conveyor belt, one solution commonly adopted in the prior art is a belt conveyor running in two directions, commonly referred to as a two-way belt conveyor. The core design idea of the device is that a single conveying belt is utilized, and the conveying of materials in two opposite directions is realized by controlling the driving motor to rotate positively and negatively. Specifically, the structure of the device generally comprises a driving roller, a reversing roller, a carrier roller set, a tensioning device and an annular conveying belt, and the whole system is erected at the top of a storage bin. When the dried sludge falls onto the belt from the upstream equipment, the motor is started to run in a certain direction, the sludge is conveyed to one end of the storage bin, and when the sludge is required to be distributed to the other end, the motor is changed to turn, so that the belt moves reversely. Under the specific historical period and technical condition, the design is widely applied and solves the problem of uniform feeding of long-distance and large-span storage bins to a certain extent by the characteristics of relatively simple structure, low cost and capability of meeting the requirement of basic cloth. However, the inherent nature of conventional bi-directional belt drive schemes in the principle context makes them increasingly subject to deep inherent contradictions and limitations in coping with new challenges. First, the mechanical instability of bi-directional operation is an inherent technical bottleneck. The reason for this is that parameters such as belt tension of the belt conveyor, roller pair neutrality, and mounting accuracy of the idler are usually optimized for one main direction of travel during the design and commissioning phase. When the direction of the driving force is reversed, the stress model of the whole conveyer belt is changed along with the direction of the driving force, the original balance state can be broken through by the slight change of stress distribution, and even the extremely small installation error or uneven abrasion of parts can be amplified during the reverse running, so that the belt deviation phenomenon is extremely easy to be caused. The belt deviation can not only aggravate the wearing and tearing of conveyer belt and cylinder, reduces equipment life, can also lead to the material unrestrained, directly forms the deposition in belt feeder bottom and both sides to seriously pollute on-the-spot production environment to bring heavy and inconvenient clearance work for fortune dimension personnel. Disclosure of Invention The invention provides a feed device of a feed bin of a sludge dryer, which aims to solve the technical problems of belt deviation, material scattering and serious equipment abrasion caused by reverse operation of the conventional bidirectional belt conveyor. In order to solve the problems, the invention provides a feed device of a sludge drier feed bin, which adopts the following technical scheme that the feed device of the sludge drier feed bin comprises a frame, a driving mechanism, a transmission mechanism and a scraper conveying mechanism. The frame stretches across the top of the stock bin and is provided with a left blanking port and a right blanking port at two ends respectively. The driving mechanism is fixedly arranged in the middle of the frame, the output shaft is connected with the transmission mechani